/* ═══════════════════════════════════════════════════════════════
   RAILFLOW — Vibrant Railway Network Command Center Design System
   Visual Direction: Dark Blue-Gray Command Console, Cyber Telemetry,
                     Railway Crimson, Electric Blue, Cyan Network,
                     Systems Emerald, Warning Amber, AI Violet
   Typography: Space Grotesk (Display/Sans) & JetBrains Mono (Telemetry/Code)
   Theme: High-Density, Vibrant, Professional Operations Dashboard
   ═══════════════════════════════════════════════════════════════ */

:root {
    /* Primary Backgrounds */
    --bg-base:          #0B1220; /* Deep Command Navy */
    --bg-primary:       #0F172A; /* Slate 900 */
    --bg-dark:          #111827; /* Near Void Dark */

    /* Surfaces & Panels */
    --bg-surface:       #162033; /* Primary Surface */
    --bg-card:          #18253A; /* High-Density Card Surface */
    --bg-surface-alt:   #1B2940; /* Elevated Surface Alt */
    --bg-subtle:        #142033; /* Recessed Background */
    --bg-hover:         #1E2C44; /* Interactive Hover State */

    /* Elevated Surfaces */
    --bg-elevated:      #202F48;
    --bg-elevated-hi:   #243550;

    /* Borders — Subtle Illuminated Contours */
    --border:           #2A3A55; /* Default Contour Outline */
    --border-strong:    #344765; /* Prominent Border */
    --border-subtle:    #1E2C44;
    --border-focus:     #3B82F6; /* Electric Blue Focus */

    /* Primary & Secondary Typography */
    --text-primary:     #F3F7FF; /* Crisp Off-White Maximum Legibility */
    --text-secondary:   #C7D2E3; /* Clean Slate Blue Readability */
    --text-muted:       #8FA1BA; /* Informational Telemetry Gray */
    --text-code:        #93C5FD; /* Active Code Blue */

    /* Signature Railway Crimson */
    --rail-red:         #EF3340; /* Iconic IR Superfast Red */
    --rail-red-hover:   #FF4D5A;
    --rail-red-dim:     rgba(239, 51, 64, 0.16);
    --rail-red-glow:    rgba(239, 51, 64, 0.35);

    /* Telemetry Accent Colors */
    --blue:             #3B82F6; /* Electric Trunk Corridor Blue */
    --blue-hover:       #60A5FA;
    --blue-dim:         rgba(59, 130, 246, 0.16);
    --blue-glow:        rgba(59, 130, 246, 0.30);

    --cyan:             #22D3EE; /* Network Telemetry Cyan */
    --cyan-dim:         rgba(34, 211, 238, 0.16);
    --cyan-glow:        rgba(34, 211, 238, 0.28);

    --emerald:          #10B981; /* Live Systems Health Emerald */
    --emerald-dim:      rgba(16, 185, 129, 0.16);
    --emerald-glow:     rgba(16, 185, 129, 0.30);

    --amber:            #F59E0B; /* Telemetry Warning Amber */
    --amber-dim:        rgba(245, 158, 11, 0.16);
    --amber-glow:       rgba(245, 158, 11, 0.30);

    --purple:           #8B5CF6; /* AI Intelligence Violet */
    --purple-dim:       rgba(139, 92, 246, 0.16);
    --purple-glow:      rgba(139, 92, 246, 0.30);

    --pink:             #F43F5E; /* Alert & Bottleneck Pink */
    --pink-dim:         rgba(244, 63, 94, 0.16);

    /* Depth & Shadows */
    --shadow-sm:        0 2px 5px rgba(0, 0, 0, 0.35);
    --shadow-md:        0 8px 24px rgba(0, 0, 0, 0.45), 0 2px 6px rgba(0, 0, 0, 0.25);
    --shadow-lg:        0 16px 40px rgba(0, 0, 0, 0.60), 0 4px 12px rgba(0, 0, 0, 0.35);
    --shadow-drawer:    -10px 0 40px rgba(4, 10, 20, 0.75);

    /* Glow Effects */
    --glow-red:         0 0 18px rgba(239, 51, 64, 0.22);
    --glow-blue:        0 0 18px rgba(59, 130, 246, 0.20);
    --glow-cyan:        0 0 18px rgba(34, 211, 238, 0.20);
    --glow-green:       0 0 18px rgba(16, 185, 129, 0.20);
    --glow-purple:      0 0 18px rgba(139, 92, 246, 0.20);

    /* Font Stacks */
    --font-sans:        'Space Grotesk', system-ui, -apple-system, sans-serif;
    --font-mono:        'JetBrains Mono', 'Fira Code', monospace;

    /* Layout Dimensions */
    --sidebar-width:    260px;
    --header-height:    64px;
    --radius-sm:        6px;
    --radius-md:        10px;
    --radius-lg:        14px;
    --radius-xl:        20px;

    /* Micro-Interaction Transitions */
    --transition-fast:  120ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition:       180ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow:  300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Global Reset & Body Setup (Zero UI Leak) ───────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    /* removed zoom:0.9 — it breaks mobile viewport calculations */
}


html, body {
    height: 100%;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-base);
    color: var(--text-primary);
    overflow: hidden;
    display: flex;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ─── Custom Command Center Scrollbars ───────────────────────── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: #0B1220;
}
::-webkit-scrollbar-thumb {
    background: #344765;
    border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover {
    background: #4B6385;
}

/* ─── Sidebar Navigation (Command Center Console) ─────────────── */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, #111B2E 0%, #0B1220 100%);
    border-right: 1px solid #263752;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.35);
    display: flex;
    flex-direction: column;
    z-index: 50;
    transition: width var(--transition-slow);
    user-select: none;
}

.sidebar-header {
    height: var(--header-height);
    padding: 0 1.25rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #263752;
    background: transparent;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
}

.logo-mark {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--rail-red), #B91C1C);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 0 16px var(--rail-red-glow);
    border: 1px solid rgba(255, 255, 255, 0.2);
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #F3F7FF;
    line-height: 1.2;
}

.logo-sub {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--rail-red);
    font-weight: 700;
    text-shadow: 0 0 10px rgba(239, 51, 64, 0.4);
}

.sidebar-nav {
    flex: 1;
    overflow-y: hidden;
    padding: 1rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-section-label {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    padding: 0.75rem 0.6rem 0.35rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    border: 1px solid transparent;
}

.nav-item:hover {
    background: #18253A;
    color: #F3F7FF;
    transform: translateX(2px);
    border-color: #2A3A55;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.nav-item.active {
    background: linear-gradient(90deg, rgba(239, 51, 64, 0.20), rgba(239, 51, 64, 0.05));
    color: #F3F7FF;
    font-weight: 600;
    border: 1px solid rgba(239, 51, 64, 0.35);
    box-shadow: 0 0 14px rgba(239, 51, 64, 0.15);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 3.5px;
    border-radius: 0 4px 4px 0;
    background: var(--rail-red);
    box-shadow: 0 0 8px var(--rail-red);
}

.nav-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    transition: color var(--transition-fast), filter var(--transition-fast);
}

.nav-item.active .nav-icon {
    color: var(--rail-red);
    filter: drop-shadow(0 0 6px var(--rail-red));
}

.nav-badge {
    margin-left: auto;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 0.15rem 0.45rem;
    border-radius: 999px;
    background: #142033;
    border: 1px solid #2A3A55;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.nav-item.active .nav-badge {
    background: rgba(239, 51, 64, 0.2);
    border-color: rgba(239, 51, 64, 0.4);
    color: #FFA5AC;
}

.sidebar-footer {
    padding: 0.85rem 1.25rem;
    border-top: 1px solid #263752;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    background: #0B1220;
}

/* ─── Top Header & Global Search ─────────────────────────────── */
.app-container {
    flex: 1;
    height: 100vh;
    height: 100dvh;
    min-height: 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    background: var(--bg-base);
}

.top-header {
    height: var(--header-height);
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid #263752;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.75rem;
    z-index: 40;
    gap: 1.5rem;
}

.search-container {
    position: relative;
    max-width: 480px;
    width: 100%;
}

.search-input-wrapper {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: #162033;
    border: 1px solid #30415D;
    border-radius: var(--radius-md);
    padding: 0.45rem 0.85rem;
    color: var(--text-muted);
    transition: all var(--transition);
}

.search-input-wrapper:focus-within {
    background: #18253A;
    border-color: #3B82F6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15), 0 0 20px rgba(59, 130, 246, 0.08);
    color: var(--text-primary);
}

.search-input {
    background: transparent;
    border: none;
    outline: none;
    color: #F3F7FF;
    font-size: 0.85rem;
    font-family: var(--font-sans);
    width: 100%;
}

.search-input::placeholder {
    color: #8193AC;
}

.search-results-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: #162033;
    border: 1px solid #344765;
    border-radius: var(--radius-md);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.65);
    max-height: 380px;
    overflow-y: hidden;
    display: none;
    z-index: 1000;
    padding: 0.45rem;
}

.search-results-dropdown.open {
    display: block;
    animation: dropdownFadeIn 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes dropdownFadeIn {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

.search-item {
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    cursor: pointer;
    font-size: 0.82rem;
    transition: background var(--transition-fast);
    border-bottom: 1px solid rgba(52, 71, 101, 0.3);
}

.search-item:last-child {
    border-bottom: none;
}

.search-item:hover, .search-item.selected {
    background: #202F48;
}

.search-item-primary {
    font-weight: 600;
    color: #F3F7FF;
}

.search-item-meta {
    font-size: 0.72rem;
    color: #8FA1BA;
    font-family: var(--font-mono);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.pipeline-ticker {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.76rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    background: #162033;
    border: 1px solid #2A3A55;
    padding: 0.4rem 0.85rem;
    border-radius: 999px;
    box-shadow: var(--shadow-sm);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--emerald);
    box-shadow: 0 0 8px var(--emerald);
    animation: pulseGlow 2s infinite ease-in-out;
    display: inline-block;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 8px var(--emerald); }
    50% { opacity: 0.45; transform: scale(0.85); box-shadow: 0 0 2px var(--emerald); }
}

/* ─── Buttons & Badges ───────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    outline: none;
    font-family: var(--font-sans);
    text-decoration: none;
    user-select: none;
    min-height: 36px;
}

.btn:active {
    transform: scale(0.97) !important;
}

.btn-primary {
    background: linear-gradient(135deg, var(--rail-red), #D92430);
    color: #ffffff;
    box-shadow: 0 4px 14px var(--rail-red-glow);
    border: 1px solid rgba(255, 255, 255, 0.15);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--rail-red-hover), #EF3340);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px var(--rail-red-glow);
}

.btn-secondary {
    background: #1B2940;
    border: 1px solid #344765;
    color: #C7D2E3;
    box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
    background: #202F48;
    color: #F3F7FF;
    border-color: #4B6385;
    transform: translateY(-1px);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    font-size: 0.68rem;
    font-weight: 700;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-real {
    background: var(--emerald-dim);
    color: #34D399;
    border: 1px solid rgba(16, 185, 129, 0.3);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.1);
}

.badge-derived {
    background: var(--blue-dim);
    color: #60A5FA;
    border: 1px solid rgba(59, 130, 246, 0.3);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.1);
}

.badge-simulated {
    background: var(--amber-dim);
    color: #FBBF24;
    border: 1px solid rgba(245, 158, 11, 0.3);
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.1);
}

.badge-ai {
    background: var(--purple-dim);
    color: #A78BFA;
    border: 1px solid rgba(139, 92, 246, 0.3);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.1);
}

/* ─── Main Viewport & Pages ──────────────────────────────────── */
.main-viewport {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto !important;
    overflow-x: hidden;
    padding: 1.75rem 2rem 3rem;
    position: relative;
    background: var(--bg-base);
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: contain;
}

.page-view {
    display: none;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 1440px;
    margin: 0 auto;
    animation: none;
}

.page-view.active {
    display: flex;
}

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 1rem;
}

.view-title-group {
    max-width: 860px;
}

.view-subtitle {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}

.view-title {
    font-size: clamp(1.45rem, 2.2vw, 1.85rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #F3F7FF;
    line-height: 1.2;
}

.view-desc {
    font-size: 0.88rem;
    color: #8FA1BA;
    margin-top: 0.35rem;
    line-height: 1.55;
}

/* ─── Pipeline Lifecycle Card ────────────────────────────────── */
.pipeline-card {
    background: #162033;
    border: 1px solid #2A3A55;
    border-radius: var(--radius-md);
    padding: 1.15rem 1.25rem;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
}

.pipeline-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.pipeline-flow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    gap: 0.5rem;
    overflow-x: hidden;
    padding: 0.4rem 0;
}

.pipeline-flow::before {
    content: '';
    position: absolute;
    top: 14px;
    left: 20px;
    right: 20px;
    height: 2px;
    background: #2A3A55;
    z-index: 1;
}

.pipeline-flow::after {
    content: '';
    position: absolute;
    top: 14px;
    left: 20px;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    z-index: 1;
    animation: pipelinePulse 3.5s infinite linear;
}

@keyframes pipelinePulse {
    0% { left: 20px; opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { left: calc(100% - 80px); opacity: 0; }
}

.pipeline-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    position: relative;
    z-index: 2;
    min-width: 76px;
    cursor: default;
    transition: transform var(--transition-fast);
}

.pipeline-node:hover {
    transform: translateY(-2px);
}

.pipeline-dot {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: #142033;
    border: 2px solid #344765;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--text-muted);
    transition: all var(--transition);
}

.pipeline-node.active .pipeline-dot {
    background: var(--rail-red);
    border-color: var(--rail-red);
    color: #ffffff;
    box-shadow: 0 0 14px var(--rail-red-glow);
}

.pipeline-label {
    font-size: 0.65rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-muted);
    text-align: center;
}

.pipeline-node.active .pipeline-label {
    color: #F3F7FF;
}

/* ─── Metric Cards Grid ──────────────────────────────────────── */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
}

.metric-card {
    background: linear-gradient(145deg, #18253A, #131F32);
    border: 1px solid #2B3C58;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--card-accent, #3B82F6);
    opacity: 0.75;
}

.metric-card:hover {
    border-color: var(--card-accent, #3B82F6);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.45), 0 0 20px rgba(59, 130, 246, 0.15);
    transform: translateY(-3px);
}

.metric-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.metric-title {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #8FA1BA;
}

.metric-val {
    font-size: 1.85rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: #F3F7FF;
    line-height: 1.1;
    letter-spacing: -0.01em;
}

.metric-sub {
    font-size: 0.78rem;
    color: #8FA1BA;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

/* ─── Panels & Tables ────────────────────────────────────────── */
.panel {
    background: #162033;
    border: 1px solid #2A3A55;
    border-radius: var(--radius-md);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
    overflow: hidden;
}

.panel-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid #2A3A55;
    background: #18253A;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.panel-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: #F3F7FF;
    letter-spacing: -0.01em;
}

.panel-body {
    padding: 1.25rem;
}

.table-wrapper {
    overflow-x: hidden;
    border: 1px solid #2A3A55;
    border-radius: var(--radius-md);
    background: #111C2D;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.84rem;
    text-align: left;
}

.data-table th {
    background: #18253A;
    padding: 0.75rem 1rem;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #8FA1BA;
    border-bottom: 1px solid #2A3A55;
    white-space: nowrap;
}

.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #1E2C44;
    color: #C7D2E3;
    vertical-align: middle;
}

.data-table tbody tr:nth-child(even) {
    background: #142136;
}

.data-table tbody tr:hover {
    background: #1C2D47;
    color: #F3F7FF;
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* ─── Graph Viewport & Canvas (Command Center Canvas) ────────── */
.graph-viewport {
    height: 600px;
    background: radial-gradient(circle at center, #172A46 0%, #0B1220 75%);
    border: 1px solid #2A3A55;
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.graph-canvas {
    width: 100%;
    height: 100%;
    display: block;
    cursor: grab;
}

.graph-canvas:active {
    cursor: grabbing;
}

.graph-legend {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(22, 32, 51, 0.92);
    backdrop-filter: blur(12px);
    border: 1px solid #2A3A55;
    border-radius: var(--radius-sm);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    padding: 0.65rem 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-size: 0.72rem;
    z-index: 10;
    pointer-events: none;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #C7D2E3;
    font-weight: 600;
}

.legend-color {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.graph-controls {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    z-index: 10;
}

.graph-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: #162033;
    border: 1px solid #344765;
    color: #F3F7FF;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-fast);
}

.graph-btn:hover {
    background: #202F48;
    border-color: #3B82F6;
    color: #3B82F6;
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.3);
}

/* SVG Node and Edge Classes */
.graph-edge {
    stroke: #526783;
    stroke-width: 2.2;
    transition: stroke 200ms, stroke-width 200ms;
}

.graph-edge:hover, .graph-edge.active {
    stroke: var(--cyan);
    stroke-width: 3.8;
    filter: drop-shadow(0 0 6px var(--cyan));
}

.graph-node {
    cursor: pointer;
    transition: transform 150ms, filter 150ms;
}

.graph-node:hover {
    filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.6));
}

.graph-node-text {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    fill: #F3F7FF;
    pointer-events: none;
    text-anchor: middle;
}

/* ─── Journey Planner & Route Strip ──────────────────────────── */
.planner-form {
    background: #162033;
    border: 1px solid #2A3A55;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: grid;
    grid-template-columns: 1fr auto 1fr auto;
    align-items: flex-end;
    gap: 1rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    position: relative;
}

.form-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #8FA1BA;
}

.form-input {
    background: #111C2D;
    border: 1px solid #30415D;
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.85rem;
    color: #F3F7FF;
    font-size: 0.88rem;
    font-family: var(--font-sans);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    width: 100%;
}

.form-input::placeholder {
    color: #8193AC;
}

.form-input:focus {
    border-color: #3B82F6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.swap-btn {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: #142033;
    border: 1px solid #344765;
    color: #C7D2E3;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.swap-btn:hover {
    background: #202F48;
    color: var(--rail-red);
    border-color: var(--rail-red);
    transform: rotate(180deg);
}

.journey-result-card {
    background: #162033;
    border: 1px solid #2A3A55;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

/* Route Strip Animated Illumination */
.route-strip {
    display: flex;
    align-items: center;
    gap: 0;
    position: relative;
    padding: 1rem 0;
    overflow-x: hidden;
}

.route-stop {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    min-width: 120px;
}

.stop-marker {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: #142033;
    border: 2px solid #344765;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    font-family: var(--font-mono);
    font-weight: 700;
    color: #8FA1BA;
    transition: all 300ms ease;
    z-index: 2;
}

.route-stop.illuminated .stop-marker {
    background: var(--rail-red);
    border-color: #F3F7FF;
    color: #ffffff;
    box-shadow: 0 0 14px var(--rail-red-glow);
    transform: scale(1.15);
}

.stop-track {
    position: absolute;
    top: 12px;
    left: 50%;
    width: 100%;
    height: 3px;
    background: #2A3A55;
    z-index: 1;
}

.route-stop.illuminated .stop-track {
    background: linear-gradient(90deg, var(--rail-red), #2A3A55);
}

.stop-info {
    text-align: center;
}

.stop-code {
    font-size: 0.85rem;
    font-weight: 700;
    color: #F3F7FF;
    font-family: var(--font-mono);
}

.stop-name {
    font-size: 0.70rem;
    color: #8FA1BA;
}

/* ─── Station Network Tree (Growing Visual Tree) ─────────────── */
.tree-container {
    background: #162033;
    border: 1px solid #2A3A55;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    max-height: 540px;
    overflow-y: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

.tree-node {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.55rem 0.8rem;
    margin-bottom: 0.4rem;
    border-radius: var(--radius-sm);
    background: #18253A;
    border: 1px solid #2A3A55;
    cursor: pointer;
    transition: all 180ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
    color: #F3F7FF;
}

.tree-node:hover {
    border-color: var(--rail-red);
    background: #202F48;
    transform: translateX(3px);
}

.tree-node.selected {
    border-color: var(--rail-red);
    background: rgba(239, 51, 64, 0.15);
    box-shadow: 0 0 0 1px var(--rail-red);
}

.tree-node-root {
    background: linear-gradient(135deg, #1E2C44, #18253A);
    border-left: 4px solid var(--rail-red);
    font-weight: 700;
}

.tree-node-zone {
    border-left: 3px solid #3B82F6;
    margin-left: 0.5rem;
}

.tree-node-division {
    border-left: 3px solid #10B981;
    margin-left: 0.75rem;
}

.tree-node-station {
    border-left: 3px solid #F59E0B;
    margin-left: 1rem;
    padding: 0.4rem 0.65rem;
    font-size: 0.8rem;
}

.tree-branch {
    position: relative;
    border-left: 2px dashed rgba(52, 71, 101, 0.7);
    margin-left: 1rem;
    padding-left: 0.75rem;
    margin-top: 0.2rem;
    margin-bottom: 0.5rem;
}

.tree-branch.growing {
    animation: treeBranchGrow 240ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
    transform-origin: top left;
}

@keyframes treeBranchGrow {
    from {
        opacity: 0;
        transform: translateY(-8px) scaleY(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scaleY(1);
    }
}

.tree-toggle-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 4px;
    background: #142033;
    font-size: 0.75rem;
    font-weight: 700;
    color: #C7D2E3;
    transition: transform 180ms ease, background-color 180ms ease;
    margin-right: 8px;
    flex-shrink: 0;
}

.tree-node.expanded .tree-toggle-icon {
    transform: rotate(90deg);
    background: var(--rail-red);
    color: #ffffff;
}

/* ─── Crowd Monitoring Grid ─────────────────────────────────── */
.provenance-card {
    background: #162033;
    border: 1px solid #2A3A55;
    border-left: 4px solid var(--amber);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.provenance-icon {
    width: 24px;
    height: 24px;
    color: var(--amber);
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.provenance-text {
    font-size: 0.82rem;
    line-height: 1.5;
    color: #C7D2E3;
}

.provenance-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: #F3F7FF;
    margin-bottom: 0.2rem;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.platform-card {
    background: #18253A;
    border: 1px solid #2A3A55;
    border-radius: var(--radius-md);
    padding: 1.15rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    transition: all var(--transition-fast);
}

.platform-card:hover {
    border-color: #344765;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    transform: translateY(-2px);
}

.platform-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.platform-name {
    font-size: 1rem;
    font-weight: 700;
    color: #F3F7FF;
}

.platform-bar-bg {
    width: 100%;
    height: 8px;
    background: #111C2D;
    border-radius: 999px;
    overflow: hidden;
}

.platform-bar-fill {
    height: 100%;
    border-radius: 999px;
    transition: width 600ms cubic-bezier(0.4, 0, 0.2, 1), background-color 300ms;
}

.platform-stats-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.76rem;
    color: #8FA1BA;
    font-family: var(--font-mono);
}

/* ─── Drawers (Station Detail & AI Assistant) ─────────────────── */
.station-drawer, .ai-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 440px;
    max-width: 90vw;
    height: 100vh;
    background: #101B2D;
    border-left: 1px solid #2A3A55;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.65);
    z-index: 10005;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 320ms cubic-bezier(0.16, 1, 0.3, 1), visibility 320ms;
    pointer-events: none;
    visibility: hidden;
}

.station-drawer.open, .ai-drawer.open {
    transform: translateX(0);
    pointer-events: auto;
    visibility: visible;
}

.drawer-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #2A3A55;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #142136;
}

.drawer-close {
    background: transparent;
    border: none;
    color: #8FA1BA;
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    padding: 0.25rem;
    transition: color var(--transition-fast);
}

.drawer-close:hover {
    color: #F3F7FF;
}

.drawer-body {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto !important;
    overflow-x: hidden;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

/* AI Assistant Drawer Specifics */
.ai-drawer-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #2A3A55;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #142136;
    flex-shrink: 0;
}

.ai-messages-container {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto !important;
    overflow-x: hidden;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: #0B1220;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

.ai-bubble {
    padding: 0.85rem 1.1rem;
    border-radius: var(--radius-md);
    font-size: 0.84rem;
    line-height: 1.6;
    max-width: 90%;
}

.ai-bubble.assistant {
    background: #18253A;
    border: 1px solid #2A3A55;
    color: #C7D2E3;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    align-self: flex-start;
}

.ai-bubble.user {
    background: linear-gradient(135deg, rgba(239, 51, 64, 0.25), rgba(59, 130, 246, 0.25));
    border: 1px solid rgba(239, 51, 64, 0.6);
    color: #F3F7FF;
    box-shadow: 0 4px 14px rgba(239, 51, 64, 0.2);
    align-self: flex-end;
}

.ai-suggested-chips {
    padding: 0.75rem 1.25rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    border-top: 1px solid #2A3A55;
    background: #142136;
    flex-shrink: 0;
}

.ai-chip {
    font-size: 0.72rem;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    background: #18253A;
    border: 1px solid #344765;
    color: #C7D2E3;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.ai-chip:hover {
    background: #202F48;
    color: var(--rail-red);
    border-color: var(--rail-red);
    box-shadow: 0 0 8px rgba(239, 51, 64, 0.2);
}

.ai-input-box {
    padding: 1rem 1.25rem;
    border-top: 1px solid #2A3A55;
    display: flex;
    gap: 0.6rem;
    background: #142136;
    flex-shrink: 0;
}

/* ─── Modals (Command Center Overlays) ───────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(4, 10, 20, 0.75);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    pointer-events: none;
}

.modal-overlay.open {
    display: flex;
    pointer-events: auto;
}

.modal-card {
    background: #162033;
    border: 1px solid #344765;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 680px;
    max-height: 90vh;
    overflow-y: hidden;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6);
    animation: modalPop 240ms cubic-bezier(0.16, 1, 0.3, 1);
    color: #F3F7FF;
}

@keyframes modalPop {
    from { opacity: 0; transform: scale(0.96) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

/* ─── SQL Terminal & Background Monitor ──────────────────────── */
.sql-terminal {
    background: #090D16;
    color: #E2E8F0;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.sql-terminal::-webkit-scrollbar {
    width: 6px;
}
.sql-terminal::-webkit-scrollbar-track {
    background: #090D16;
}
.sql-terminal::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 3px;
}

.sql-entry {
    background: #0F172A;
    border: 1px solid #1E293B;
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    margin-bottom: 0.75rem;
    animation: sqlEntryAnim 200ms ease-out;
}

@keyframes sqlEntryAnim {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.sql-entry-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #1E293B;
    padding-bottom: 0.4rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.sql-entry-query {
    background: #020617;
    border: 1px solid #1E293B;
    border-radius: 4px;
    padding: 0.45rem 0.6rem;
    color: #38BDF8;
    font-weight: 600;
    word-break: break-all;
    margin-bottom: 0.5rem;
    letter-spacing: 0.02em;
    font-family: var(--font-mono);
}

.sql-entry-plan {
    font-size: 0.70rem;
    color: #94A3B8;
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
}

.sql-mini-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.70rem;
    margin-top: 0.4rem;
    background: #020617;
    border-radius: 4px;
    overflow: hidden;
}

.sql-mini-table th, .sql-mini-table td {
    padding: 0.25rem 0.5rem;
    text-align: left;
    border: 1px solid #1E293B;
}

.sql-mini-table th {
    background: #1E293B;
    color: #CBD5E1;
    font-weight: 600;
}

.sql-mini-table tr:nth-child(even) td {
    background: rgba(30, 41, 59, 0.3);
}

.sql-preset-btn {
    transition: all 150ms ease;
}

.sql-preset-btn.active {
    background: var(--rail-red) !important;
    color: #ffffff !important;
    border-color: var(--rail-red) !important;
    box-shadow: 0 0 10px var(--rail-red-glow);
}

/* ─── Responsive Breakpoints (1920 down to 360px) ─────────────── */
@media (max-width: 1200px) {
    .metrics-grid {
        grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    }
}

@media (max-width: 1024px) {
    .sidebar {
        width: 72px;
        min-width: 72px;
    }
    .logo-text, .nav-item span:not(.nav-icon), .nav-section-label, .sidebar-footer {
        display: none;
    }
    .nav-item {
        justify-content: center;
        padding: 0.75rem;
    }
    .main-viewport {
        padding: 1.25rem 1.5rem;
    }
    .planner-form {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        bottom: 0;
        transition: left 300ms ease;
    }
    .sidebar.mobile-open {
        left: 0;
        width: 260px;
        min-width: 260px;
    }
    .top-header {
        padding: 0 1rem;
        gap: 0.75rem;
    }
    .planner-form {
        grid-template-columns: 1fr;
    }
    .station-drawer, .ai-drawer {
        width: 100vw;
        max-width: 100vw;
    }
    .db-explorer-grid {
        grid-template-columns: 1fr !important;
    }
    .pipeline-flow {
        justify-content: flex-start;
    }
    .main-viewport {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .top-header {
        height: auto;
        padding: 0.75rem;
        flex-wrap: wrap;
    }
    .search-container {
        order: 3;
        max-width: 100%;
    }
    .header-actions {
        margin-left: auto;
    }
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    .view-title {
        font-size: 1.35rem;
    }
}

/* ─── Accessibility: Reduced Motion ──────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ═══════════════════════════════════════════════════════════════
   RAILFLOW 2.0 — PREMIUM UI ENHANCEMENT PACK
   Mobile Navigation, Toasts, Skeletons, Corridor Cards,
   Page Progress Bar, Telemetry Heatmap, AI Typing Indicator
   ═══════════════════════════════════════════════════════════════ */

/* ─── Page-Level Top Progress Bar (Permanently Removed for Instant 0ms Latency) ─── */
.page-progress-bar {
    display: none !important;
    width: 0 !important;
    height: 0 !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

/* ─── CUSTOM BUTTON LAYOUTS WITH EMOJIS & 0ms FAST RESPONSE ───── */
.swap-btn {
    width: 44px;
    height: 44px;
    min-width: 44px;
    border-radius: 50%;
    background: #182438;
    border: 1.5px solid #3B82F6;
    color: #60A5FA;
    font-size: 1.15rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.25);
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    align-self: flex-end;
    margin-bottom: 2px;
}
.swap-btn:hover {
    background: #1D3154;
    color: #93C5FD;
    transform: rotate(180deg) scale(1.08);
    box-shadow: 0 0 18px rgba(59, 130, 246, 0.45);
    border-color: #60A5FA;
}

.btn-plan-route {
    height: 42px;
    padding: 0 1.85rem;
    background: linear-gradient(135deg, #EF3340 0%, #EA580C 100%);
    color: #FFFFFF;
    font-weight: 700;
    font-size: 0.88rem;
    letter-spacing: 0.03em;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 18px rgba(239, 51, 64, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.15s ease;
    cursor: pointer;
}
.btn-plan-route:hover {
    background: linear-gradient(135deg, #FF4552 0%, #F97316 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(239, 51, 64, 0.55);
}

.btn-replay {
    background: rgba(34, 211, 238, 0.12);
    border: 1px solid rgba(34, 211, 238, 0.4);
    color: #22D3EE;
    font-weight: 600;
    font-size: 0.76rem;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.15s ease;
    cursor: pointer;
}
.btn-replay:hover {
    background: rgba(34, 211, 238, 0.22);
    color: #67E8F9;
    border-color: #22D3EE;
    box-shadow: 0 0 12px rgba(34, 211, 238, 0.35);
    transform: translateY(-1px);
}

/* Quick Corridor Presets Bar */
.corridor-preset-bar {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    flex-wrap: wrap;
    margin-top: 0.85rem;
    padding: 0.65rem 0.85rem;
    background: rgba(15, 23, 42, 0.75);
    border: 1px solid #223249;
    border-radius: var(--radius-md);
}
.corridor-preset-label {
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: #8FA1BA;
    text-transform: uppercase;
    margin-right: 0.25rem;
}
.btn-corridor-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 600;
    cursor: pointer;
    background: #141E30;
    border: 1px solid #2B3D59;
    color: #E2E8F0;
    transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
    white-space: nowrap;
}
.btn-corridor-chip:hover {
    transform: translateY(-1.5px) scale(1.02);
}
.btn-corridor-chip .chip-emoji {
    font-size: 0.85rem;
}
.btn-corridor-chip .chip-route {
    font-weight: 700;
    font-family: var(--font-mono);
}
.btn-corridor-chip .chip-desc {
    font-size: 0.68rem;
    opacity: 0.75;
}

.chip-tpj-alu {
    border-color: rgba(16, 185, 129, 0.45);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.18), rgba(6, 95, 70, 0.25));
    color: #A7F3D0;
}
.chip-tpj-alu:hover {
    border-color: #10B981;
    box-shadow: 0 0 14px rgba(16, 185, 129, 0.4);
    color: #ECFDF5;
}

.chip-tpj-ms {
    border-color: rgba(245, 158, 11, 0.45);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.18), rgba(146, 64, 14, 0.25));
    color: #FDE68A;
}
.chip-tpj-ms:hover {
    border-color: #F59E0B;
    box-shadow: 0 0 14px rgba(245, 158, 11, 0.4);
    color: #FFFBEB;
}

.chip-alu-ms {
    border-color: rgba(168, 85, 247, 0.45);
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.18), rgba(107, 33, 168, 0.25));
    color: #E9D5FF;
}
.chip-alu-ms:hover {
    border-color: #A855F7;
    box-shadow: 0 0 14px rgba(168, 85, 247, 0.4);
    color: #FAF5FF;
}

.chip-ndls-mas {
    border-color: rgba(239, 51, 64, 0.45);
    background: linear-gradient(135deg, rgba(239, 51, 64, 0.18), rgba(159, 18, 57, 0.25));
    color: #FECDD3;
}
.chip-ndls-mas:hover {
    border-color: #EF3340;
    box-shadow: 0 0 14px rgba(239, 51, 64, 0.4);
    color: #FFF1F2;
}

.chip-bct-ndls {
    border-color: rgba(59, 130, 246, 0.45);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.18), rgba(30, 58, 138, 0.25));
    color: #BFDBFE;
}
.chip-bct-ndls:hover {
    border-color: #3B82F6;
    box-shadow: 0 0 14px rgba(59, 130, 246, 0.4);
    color: #EFF6FF;
}

.chip-mas-hwh {
    border-color: rgba(20, 184, 166, 0.45);
    background: linear-gradient(135deg, rgba(20, 184, 166, 0.18), rgba(15, 118, 110, 0.25));
    color: #99F6E4;
}
.chip-mas-hwh:hover {
    border-color: #14B8A6;
    box-shadow: 0 0 14px rgba(20, 184, 166, 0.4);
    color: #F0FDFA;
}

/* Header Buttons */
.btn-guide {
    background: rgba(99, 102, 241, 0.14);
    border: 1px solid rgba(99, 102, 241, 0.45);
    color: #C7D2FE;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
}
.btn-guide:hover {
    background: rgba(99, 102, 241, 0.26);
    color: #EEF2FF;
    border-color: #818CF8;
    box-shadow: 0 0 14px rgba(99, 102, 241, 0.35);
}

.btn-ai-toggle {
    background: linear-gradient(135deg, #7C3AED 0%, #C026D3 100%);
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.4);
}
.btn-ai-toggle:hover {
    background: linear-gradient(135deg, #8B5CF6 0%, #D946EF 100%);
    box-shadow: 0 6px 22px rgba(192, 38, 211, 0.5);
    transform: translateY(-1px);
}
.badge-ai-pulse {
    background: rgba(255, 255, 255, 0.22);
    color: #FFFFFF;
    font-size: 0.62rem;
    font-weight: 800;
    padding: 0.12rem 0.4rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.btn-pnr-status {
    background: #18263A;
    border: 1px solid #334B6E;
    color: #BFDBFE;
}
.btn-pnr-status:hover {
    background: #20334E;
    color: #EFF6FF;
    border-color: #60A5FA;
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.25);
}

/* Timetable button */
.btn-timetable-action {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(30, 64, 175, 0.3));
    border: 1px solid #3B82F6;
    color: #93C5FD;
    font-size: 0.74rem;
    font-weight: 600;
    padding: 0.3rem 0.7rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: all 0.15s ease;
    cursor: pointer;
}
.btn-timetable-action:hover {
    background: #2563EB;
    color: #FFFFFF;
    box-shadow: 0 0 12px rgba(37, 99, 235, 0.5);
    transform: translateY(-1px);
}

.search-item-code-badge {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.76rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    background: rgba(59, 130, 246, 0.15);
    color: #93C5FD;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.search-item.highlight-sr {
    border-left: 3px solid #10B981;
    background: rgba(16, 185, 129, 0.05);
}

/* ─── Mobile Hamburger Button ─────────────────────────────────── */
.hamburger-btn {
    display: none;
    background: transparent;
    border: 1px solid #344765;
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    transition: all var(--transition-fast);
    gap: 0;
    padding: 0;
    flex-direction: column;
}

.hamburger-btn:hover {
    background: #18253A;
    color: var(--rail-red);
    border-color: var(--rail-red);
    box-shadow: 0 0 10px rgba(239, 51, 64, 0.2);
}

.hamburger-btn span {
    display: block;
    width: 16px;
    height: 1.5px;
    background: currentColor;
    border-radius: 2px;
    transition: all var(--transition-fast);
    margin: 2px 0;
}

.hamburger-btn.active span:nth-child(1) {
    transform: translateY(5.5px) rotate(45deg);
}
.hamburger-btn.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.hamburger-btn.active span:nth-child(3) {
    transform: translateY(-5.5px) rotate(-45deg);
}

@media (max-width: 768px) {
    .hamburger-btn {
        display: inline-flex;
    }
}

/* ─── Mobile Sidebar Overlay Backdrop ────────────────────────── */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(4, 10, 20, 0.6);
    backdrop-filter: blur(4px);
    z-index: 49;
    opacity: 0;
    transition: opacity 300ms ease;
    pointer-events: none;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
    pointer-events: auto;
}

/* ─── Toast Notification System ──────────────────────────────── */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    z-index: 9998;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.85rem 1.1rem;
    border-radius: var(--radius-md);
    background: #18253A;
    border: 1px solid #344765;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.55);
    min-width: 280px;
    max-width: 380px;
    pointer-events: all;
    animation: toastSlideIn 280ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
    position: relative;
    overflow: hidden;
}

.toast::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2.5px;
    width: 100%;
    background: var(--toast-accent, var(--cyan));
    animation: toastTimer var(--toast-duration, 4000ms) linear forwards;
    transform-origin: left;
}

@keyframes toastSlideIn {
    from { opacity: 0; transform: translateX(24px) scale(0.95); }
    to { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes toastSlideOut {
    from { opacity: 1; transform: translateX(0) scale(1); max-height: 100px; }
    to { opacity: 0; transform: translateX(24px) scale(0.95); max-height: 0; padding: 0; margin: 0; }
}

@keyframes toastTimer {
    from { transform: scaleX(1); }
    to { transform: scaleX(0); }
}

.toast.removing {
    animation: toastSlideOut 240ms cubic-bezier(0.4, 0, 1, 1) forwards;
}

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 1px;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}

.toast-msg {
    font-size: 0.76rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
    line-height: 1.4;
}

.toast-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    padding: 0.1rem;
    transition: color var(--transition-fast);
    flex-shrink: 0;
}
.toast-close:hover { color: var(--text-primary); }

/* Toast Variants */
.toast.toast-success { --toast-accent: var(--emerald); border-color: rgba(16, 185, 129, 0.35); }
.toast.toast-success .toast-icon { color: var(--emerald); }
.toast.toast-error   { --toast-accent: var(--rail-red); border-color: rgba(239, 51, 64, 0.35); }
.toast.toast-error .toast-icon { color: var(--rail-red); }
.toast.toast-warn    { --toast-accent: var(--amber); border-color: rgba(245, 158, 11, 0.35); }
.toast.toast-warn .toast-icon { color: var(--amber); }
.toast.toast-info    { --toast-accent: var(--cyan); border-color: rgba(34, 211, 238, 0.30); }
.toast.toast-info .toast-icon { color: var(--cyan); }

/* ─── Skeleton Loader System ──────────────────────────────────── */
@keyframes shimmer {
    0%   { background-position: -600px 0; }
    100% { background-position: 600px 0; }
}

.skeleton {
    background: linear-gradient(
        90deg,
        #162033 0%, #1C2D47 30%, #162033 60%
    );
    background-size: 600px 100%;
    animation: shimmer 1.5s infinite linear;
    border-radius: var(--radius-sm);
}

.skeleton-text {
    height: 0.85rem;
    width: 100%;
    margin-bottom: 0.5rem;
}

.skeleton-text.short { width: 55%; }
.skeleton-text.med   { width: 75%; }

.skeleton-val {
    height: 2rem;
    width: 65%;
    margin: 0.35rem 0;
    border-radius: var(--radius-sm);
}

.skeleton-row {
    height: 2.75rem;
    width: 100%;
    border-radius: 0;
    border-bottom: 1px solid #1E2C44;
}

.skeleton-card {
    background: linear-gradient(145deg, #18253A, #131F32);
    border: 1px solid #2B3C58;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* ─── Enhanced Corridor Cards ─────────────────────────────────── */
.corridor-card {
    cursor: pointer;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-subtle);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.corridor-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3.5px;
    background: var(--corridor-accent, var(--rail-red));
    border-radius: 0 3px 3px 0;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.corridor-card:hover {
    background: #18253A;
    border-color: var(--corridor-accent, var(--rail-red));
    transform: translateX(4px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}

.corridor-card:hover::before {
    opacity: 1;
}

.corridor-card-header {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.corridor-dist {
    color: var(--rail-red);
    font-family: var(--font-mono);
    font-weight: 700;
}

.corridor-route {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.corridor-card .corridor-arrow {
    position: absolute;
    right: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    opacity: 0;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    font-size: 0.9rem;
}

.corridor-card:hover .corridor-arrow {
    opacity: 1;
    transform: translateY(-50%) translateX(3px);
}

/* ─── Status Indicator Dots ───────────────────────────────────── */
.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--emerald);
    flex-shrink: 0;
}

.status-indicator.live {
    background: var(--emerald);
    box-shadow: 0 0 8px var(--emerald);
    animation: pulseGlow 2s infinite ease-in-out;
}

.status-indicator.warn {
    background: var(--amber);
    box-shadow: 0 0 8px var(--amber);
    animation: pulseGlow 1.5s infinite ease-in-out;
}

.status-indicator.critical {
    background: var(--rail-red);
    box-shadow: 0 0 8px var(--rail-red);
    animation: pulseGlow 1s infinite ease-in-out;
}

/* ─── AI Typing Indicator ─────────────────────────────────────── */
.ai-typing {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0.85rem 1.1rem;
    background: #18253A;
    border: 1px solid #2A3A55;
    border-radius: var(--radius-md);
    width: fit-content;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    align-self: flex-start;
}

.ai-typing-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--purple);
    animation: aiTypingBounce 1.4s infinite ease-in-out;
}

.ai-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.ai-typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes aiTypingBounce {
    0%, 80%, 100% { transform: scale(0.7); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

/* ─── Telemetry Heatmap Grid (Crowd Monitor enhancement) ─────── */
.telemetry-heatmap {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 3px;
    padding: 0.5rem 0;
}

.heatmap-cell {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 3px;
    background: #162033;
    border: 1px solid #2A3A55;
    transition: all 600ms ease;
}

.heatmap-cell.low    { background: rgba(16, 185, 129, 0.35); border-color: rgba(16, 185, 129, 0.4); }
.heatmap-cell.med    { background: rgba(245, 158, 11, 0.40); border-color: rgba(245, 158, 11, 0.5); }
.heatmap-cell.high   { background: rgba(239, 51, 64, 0.40); border-color: rgba(239, 51, 64, 0.5); }
.heatmap-cell.crit   {
    background: rgba(239, 51, 64, 0.70);
    border-color: var(--rail-red);
    box-shadow: 0 0 6px rgba(239, 51, 64, 0.4);
    animation: heatmapPulse 1.2s infinite ease-in-out;
}

@keyframes heatmapPulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.6; }
}

/* ─── Loading Spinner ─────────────────────────────────────────── */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(59, 130, 246, 0.15);
    border-top-color: var(--blue);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    flex-shrink: 0;
}

.spinner-sm {
    width: 14px;
    height: 14px;
    border-width: 1.5px;
}

.spinner-red {
    border-color: rgba(239, 51, 64, 0.15);
    border-top-color: var(--rail-red);
}

.spinner-cyan {
    border-color: rgba(34, 211, 238, 0.15);
    border-top-color: var(--cyan);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ─── Network Pulse Animation on Edges ────────────────────────── */
.graph-edge-pulse {
    stroke: var(--cyan);
    stroke-width: 2.5;
    stroke-dasharray: 8 8;
    animation: dashMove 2s linear infinite;
    opacity: 0.5;
}

@keyframes dashMove {
    to { stroke-dashoffset: -40; }
}

/* ─── Enhanced Metric Cards — Color Accent Variants ──────────── */
.metric-card.accent-red    { --card-accent: var(--rail-red); }
.metric-card.accent-blue   { --card-accent: var(--blue); }
.metric-card.accent-cyan   { --card-accent: var(--cyan); }
.metric-card.accent-green  { --card-accent: var(--emerald); }
.metric-card.accent-amber  { --card-accent: var(--amber); }
.metric-card.accent-purple { --card-accent: var(--purple); }

/* ─── Timetable Modal Enhanced States ────────────────────────── */
.tt-loading-state {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.tt-tier-badge {
    font-size: 0.65rem;
    padding: 0.15rem 0.4rem;
    border-radius: 999px;
    font-weight: 700;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid;
    margin-left: 0.4rem;
}

.tt-tier-badge.tier-0 { background: var(--emerald-dim); color: #34D399; border-color: rgba(16,185,129,0.3); }
.tt-tier-badge.tier-1 { background: var(--blue-dim); color: #60A5FA; border-color: rgba(59,130,246,0.3); }
.tt-tier-badge.tier-2 { background: var(--amber-dim); color: #FBBF24; border-color: rgba(245,158,11,0.3); }
.tt-tier-badge.tier-3 { background: var(--purple-dim); color: #A78BFA; border-color: rgba(139,92,246,0.3); }

/* Origin & terminus row highlight */
.data-table tbody tr.origin-row td {
    background: rgba(239, 51, 64, 0.12);
    border-left: 3px solid var(--rail-red);
    color: var(--text-primary);
    font-weight: 600;
}

.data-table tbody tr.terminus-row td {
    background: rgba(16, 185, 129, 0.10);
    border-left: 3px solid var(--emerald);
    color: var(--text-primary);
    font-weight: 600;
}

/* ─── Platform Bar Enhanced States ───────────────────────────── */
.platform-bar-fill.normal   { background: linear-gradient(90deg, var(--emerald), #6EE7B7); }
.platform-bar-fill.warning  { background: linear-gradient(90deg, var(--amber), #FCD34D); }
.platform-bar-fill.critical {
    background: linear-gradient(90deg, var(--rail-red), #FF6B7A);
    animation: criticalPulse 1.5s ease-in-out infinite;
}

@keyframes criticalPulse {
    0%, 100% { box-shadow: none; }
    50%       { box-shadow: 0 0 10px rgba(239, 51, 64, 0.5); }
}

/* ─── Keyboard Shortcut Pill ──────────────────────────────────── */
.kbd {
    display: inline-flex;
    align-items: center;
    padding: 0.1rem 0.4rem;
    background: #142033;
    border: 1px solid #344765;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-secondary);
    box-shadow: 0 2px 0 #0B1220;
}

/* ─── Data Source Provenance Ribbon ──────────────────────────── */
.source-ribbon {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.68rem;
    font-family: var(--font-mono);
    font-weight: 700;
    padding: 0.18rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.source-ribbon.sqlite    { background: rgba(34, 211, 238, 0.12); color: var(--cyan); border: 1px solid rgba(34,211,238,0.25); }
.source-ribbon.json      { background: rgba(59, 130, 246, 0.12); color: #60A5FA; border: 1px solid rgba(59,130,246,0.25); }
.source-ribbon.catalog   { background: rgba(245, 158, 11, 0.12); color: #FBBF24; border: 1px solid rgba(245,158,11,0.25); }
.source-ribbon.interp    { background: rgba(139, 92, 246, 0.12); color: #A78BFA; border: 1px solid rgba(139,92,246,0.25); }

/* ─── Floating Live Telemetry Counter ───────────────────────── */
.telemetry-badge-float {
    position: fixed;
    bottom: 1.5rem;
    left: calc(var(--sidebar-width) + 1.5rem);
    background: rgba(22, 32, 51, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(16, 185, 129, 0.35);
    border-radius: 999px;
    padding: 0.35rem 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--emerald);
    z-index: 100;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.2);
    pointer-events: none;
    transition: opacity 300ms ease;
}

.telemetry-badge-float .pulse-dot {
    background: var(--emerald);
}

@media (max-width: 768px) {
    .telemetry-badge-float {
        left: 1rem;
        bottom: 1rem;
    }
}

/* ─── Graph Node Glow Pulse ───────────────────────────────────── */
.graph-node-active circle {
    animation: nodeActivePulse 2.5s ease-in-out infinite;
}

@keyframes nodeActivePulse {
    0%, 100% { filter: drop-shadow(0 0 4px rgba(239, 51, 64, 0.3)); }
    50%       { filter: drop-shadow(0 0 14px rgba(239, 51, 64, 0.8)); }
}

/* ─── Train Type Badge Color Map ──────────────────────────────── */
.train-type-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.18rem 0.5rem;
    border-radius: 999px;
    font-size: 0.66rem;
    font-weight: 700;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.train-type-badge.RAJDHANI    { background: rgba(239,51,64,0.18); color: #FF7A87; border: 1px solid rgba(239,51,64,0.35); }
.train-type-badge.SHATABDI    { background: rgba(34,211,238,0.15); color: #67E8F9; border: 1px solid rgba(34,211,238,0.3); }
.train-type-badge.VANDE,
.train-type-badge.VANDE_BHARAT { background: rgba(139,92,246,0.18); color: #C4B5FD; border: 1px solid rgba(139,92,246,0.35); }
.train-type-badge.SUPERFAST   { background: rgba(59,130,246,0.18); color: #93C5FD; border: 1px solid rgba(59,130,246,0.3); }
.train-type-badge.EXPRESS     { background: rgba(16,185,129,0.15); color: #6EE7B7; border: 1px solid rgba(16,185,129,0.3); }
.train-type-badge.MAIL        { background: rgba(245,158,11,0.15); color: #FCD34D; border: 1px solid rgba(245,158,11,0.3); }

/* ─── Panel Accent Borders ────────────────────────────────────── */
.panel.accent-top-red    { border-top: 3px solid var(--rail-red); }
.panel.accent-top-blue   { border-top: 3px solid var(--blue); }
.panel.accent-top-cyan   { border-top: 3px solid var(--cyan); }
.panel.accent-top-green  { border-top: 3px solid var(--emerald); }
.panel.accent-top-amber  { border-top: 3px solid var(--amber); }
.panel.accent-top-purple { border-top: 3px solid var(--purple); }

/* ─── Search Results Enhanced ─────────────────────────────────── */
.search-item-type-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
    font-size: 0.60rem;
    font-weight: 700;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.search-item-type-badge.station { background: rgba(34,211,238,0.15); color: var(--cyan); }
.search-item-type-badge.train   { background: rgba(239,51,64,0.15); color: var(--rail-red); }
.search-item-type-badge.zone    { background: rgba(59,130,246,0.15); color: var(--blue); }

/* ─── Keyboard Shortcut Tooltip ───────────────────────────────── */
[data-shortcut]::after {
    content: attr(data-shortcut);
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    background: #0B1220;
    border: 1px solid #344765;
    color: var(--text-muted);
    font-size: 0.65rem;
    font-family: var(--font-mono);
    padding: 0.2rem 0.45rem;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
    z-index: 1000;
}

/* ─── Stat Change Indicator (Up/Down arrows on metrics) ──────── */
.stat-change {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    font-weight: 700;
}

.stat-change.up   { color: var(--emerald); }
.stat-change.down { color: var(--rail-red); }
.stat-change.flat { color: var(--text-muted); }

/* ─── Version Chip in Sidebar Footer ─────────────────────────── */
.version-chip {
    font-size: 0.60rem;
    font-family: var(--font-mono);
    font-weight: 700;
    padding: 0.12rem 0.4rem;
    border-radius: 4px;
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.25);
    color: var(--cyan);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ─── Full-Width Loading Overlay for Modal / Drawer ──────────── */
.content-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 3rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.content-loading .spinner {
    width: 28px;
    height: 28px;
    border-width: 2.5px;
}

/* ─── Command Center Gradient Spotlight ──────────────────────── */
.spotlight-card {
    position: relative;
    overflow: hidden;
}

.spotlight-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 60% 40%, rgba(59, 130, 246, 0.06) 0%, transparent 65%);
    pointer-events: none;
    z-index: 0;
}

.spotlight-card > * { position: relative; z-index: 1; }

/* ─── Telemetry Tick Number Badge (Crowd Page) ───────────────── */
.telemetry-tick-counter {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--amber);
    background: var(--amber-dim);
    border: 1px solid rgba(245, 158, 11, 0.35);
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
}

/* ─── Interactive Corridor Path Highlight in Route Strip ─────── */
.route-stop.start .stop-marker {
    background: var(--rail-red);
    border-color: #F3F7FF;
    color: #ffffff;
    box-shadow: 0 0 16px var(--rail-red-glow);
}

.route-stop.end .stop-marker {
    background: var(--emerald);
    border-color: #F3F7FF;
    color: #ffffff;
    box-shadow: 0 0 16px rgba(16, 185, 129, 0.5);
}

/* ─── Sidebar collapse for desktop medium screens ─────────────── */
@media (max-width: 1200px) and (min-width: 1025px) {
    .sidebar {
        width: 220px;
        min-width: 220px;
    }
    .nav-item span:not(.nav-icon):not(.nav-badge) {
        font-size: 0.82rem;
    }
}

/* ─── Admin Panel Lock Card Polish ────────────────────────────── */
.admin-lock-card {
    background: linear-gradient(145deg, rgba(220, 38, 38, 0.04), transparent);
}

/* ─── Table Row Action Hover Reveal ──────────────────────────── */
.data-table tbody tr .action-reveal {
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.data-table tbody tr:hover .action-reveal {
    opacity: 1;
}

/* ─── Responsive Tweaks for Tablet ───────────────────────────── */
@media (max-width: 900px) {
    .view-title {
        font-size: 1.3rem;
    }
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .platform-grid {
        grid-template-columns: 1fr;
    }
}

/* ─── Print: Strip all telemetry / dark backgrounds ──────────── */
@media print {
    body { background: #ffffff; color: #000000; }
    .sidebar, .top-header, .toast-container, .telemetry-badge-float,
    .page-progress-bar, .hamburger-btn { display: none !important; }
    .main-viewport { padding: 0; }
    .panel { box-shadow: none; border: 1px solid #ccc; }
}

/* ═══════════════════════════════════════════════════════════════════════════════
   PERFORMANCE & CUSTOM BUTTON LAYOUTS WITH MANUAL EMOJIS
   Zero loading delay, distinct button styling, and Southern Railway highlights
   ═══════════════════════════════════════════════════════════════════════════════ */

/* 1. Permanent removal of top progress bar & zero-delay instant page transitions */
.page-progress-bar,
#pageProgressBar {
    display: none !important;
    opacity: 0 !important;
    pointer-events: none !important;
    visibility: hidden !important;
    height: 0 !important;
    width: 0 !important;
}

.page-view {
    animation: none !important;
    transition: none !important;
}

/* 2. Manual Emoji Styles */
.nav-emoji {
    font-size: 1.15rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.4));
    line-height: 1;
}

.station-emoji {
    font-size: 1.25rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

/* 3. Distinct Button Family Layouts */
.btn-pnr-status {
    background: linear-gradient(135deg, rgba(234, 88, 12, 0.15), rgba(194, 65, 12, 0.3)) !important;
    border: 1px solid rgba(234, 88, 12, 0.45) !important;
    color: #fb923c !important;
    font-weight: 600;
    padding: 0.45rem 0.85rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 150ms ease;
}
.btn-pnr-status:hover {
    background: linear-gradient(135deg, rgba(234, 88, 12, 0.3), rgba(194, 65, 12, 0.5)) !important;
    border-color: #f97316 !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(234, 88, 12, 0.25);
}

.btn-guide {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(29, 78, 216, 0.25)) !important;
    border: 1px solid rgba(59, 130, 246, 0.4) !important;
    color: #60a5fa !important;
    font-weight: 600;
    padding: 0.45rem 0.85rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 150ms ease;
}
.btn-guide:hover {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(29, 78, 216, 0.45)) !important;
    border-color: #3b82f6 !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.btn-ai-toggle {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.15), rgba(107, 33, 168, 0.3)) !important;
    border: 1px solid rgba(168, 85, 247, 0.45) !important;
    color: #c084fc !important;
    font-weight: 600;
    padding: 0.45rem 0.85rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 150ms ease;
}
.btn-ai-toggle:hover {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.3), rgba(107, 33, 168, 0.5)) !important;
    border-color: #a855f7 !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(168, 85, 247, 0.25);
}

.btn-plan-route {
    background: linear-gradient(135deg, var(--rail-red), #b91c1c) !important;
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
    font-weight: 700 !important;
    font-size: 0.92rem !important;
    padding: 0.65rem 1.4rem !important;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 14px var(--rail-red-glow);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: all 150ms ease;
}
.btn-plan-route:hover {
    background: linear-gradient(135deg, #ef4444, var(--rail-red)) !important;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.5);
}

.swap-btn {
    width: 44px;
    height: 44px;
    border-radius: 50% !important;
    background: var(--bg-subtle) !important;
    border: 1.5px solid var(--border-light) !important;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    cursor: pointer;
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}
.swap-btn:hover {
    border-color: var(--rail-red) !important;
    background: rgba(220, 38, 38, 0.1) !important;
    transform: rotate(180deg) scale(1.08);
}

.btn-replay {
    background: rgba(148, 163, 184, 0.1) !important;
    border: 1px solid var(--border) !important;
    color: var(--text-secondary) !important;
    font-weight: 600;
    padding: 0.45rem 0.85rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 150ms ease;
}
.btn-replay:hover {
    color: var(--text-primary) !important;
    border-color: var(--border-light) !important;
    background: rgba(148, 163, 184, 0.2) !important;
}

/* 4. Quick Corridor Preset Chips Bar */
.corridor-preset-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 0.75rem;
    padding: 0.6rem 0.85rem;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.btn-corridor-chip {
    padding: 0.32rem 0.7rem;
    font-size: 0.76rem;
    font-weight: 600;
    border-radius: 999px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 150ms ease;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.btn-corridor-chip:hover {
    transform: translateY(-1px);
}

.chip-tpj-alu {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(6, 78, 59, 0.35));
    border-color: rgba(16, 185, 129, 0.55);
    color: #34d399;
}
.chip-tpj-alu:hover {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.3), rgba(6, 78, 59, 0.55));
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.chip-tpj-ms {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.15), rgba(3, 105, 161, 0.35));
    border-color: rgba(14, 165, 233, 0.55);
    color: #38bdf8;
}
.chip-tpj-ms:hover {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.3), rgba(3, 105, 161, 0.55));
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.3);
}

.chip-alu-ms {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.15), rgba(107, 33, 168, 0.35));
    border-color: rgba(168, 85, 247, 0.55);
    color: #c084fc;
}
.chip-alu-ms:hover {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.3), rgba(107, 33, 168, 0.55));
    box-shadow: 0 2px 8px rgba(168, 85, 247, 0.3);
}

.chip-ndls-mas {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(180, 83, 9, 0.35));
    border-color: rgba(245, 158, 11, 0.55);
    color: #fbbf24;
}
.chip-ndls-mas:hover {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.3), rgba(180, 83, 9, 0.55));
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.chip-bct-ndls {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(185, 28, 28, 0.35));
    border-color: rgba(239, 68, 68, 0.55);
    color: #f87171;
}
.chip-bct-ndls:hover {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.3), rgba(185, 28, 28, 0.55));
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.chip-mas-hwh {
    background: linear-gradient(135deg, rgba(20, 184, 166, 0.15), rgba(15, 118, 110, 0.35));
    border-color: rgba(20, 184, 166, 0.55);
    color: #2dd4bf;
}
.chip-mas-hwh:hover {
    background: linear-gradient(135deg, rgba(20, 184, 166, 0.3), rgba(15, 118, 110, 0.55));
    box-shadow: 0 2px 8px rgba(20, 184, 166, 0.3);
}

/* 5. Station Autocomplete & Global Search Item Polish */
.search-item-code-badge {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.72rem;
    padding: 0.22rem 0.55rem;
    border-radius: 4px;
    background: rgba(30, 41, 59, 0.9);
    border: 1px solid rgba(148, 163, 184, 0.25);
    color: var(--text-primary);
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

.search-item.highlight-sr {
    border-left: 3px solid #10b981;
    background: linear-gradient(90deg, rgba(16, 185, 129, 0.08), transparent);
}
.search-item.highlight-sr:hover {
    background: linear-gradient(90deg, rgba(16, 185, 129, 0.18), rgba(16, 185, 129, 0.04)) !important;
}

/* ═══════════════════════════════════════════════════════════════════════
   AKNEX RAILFLOW 3.0 — AUTOMATED STATION OPERATIONS & COMMUTER INTELLIGENCE
   ═══════════════════════════════════════════════════════════════════════ */

/* ─── Dual-View Mode Switcher (Controller HUD vs Commuter Portal) ─── */
.view-mode-toggle {
    display: inline-flex;
    align-items: center;
    background: rgba(11, 19, 34, 0.85);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-full, 999px);
    padding: 3px;
    gap: 4px;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.4);
}

.view-mode-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    padding: 5px 14px;
    border-radius: var(--radius-full, 999px);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
}

.view-mode-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.view-mode-btn.active {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.22) 0%, rgba(59, 130, 246, 0.25) 100%);
    border: 1px solid var(--cyan);
    color: #FFFFFF;
    box-shadow: 0 0 14px rgba(34, 211, 238, 0.35);
}

.view-mode-btn[data-mode="commuter"].active {
    background: linear-gradient(135deg, rgba(239, 51, 64, 0.24) 0%, rgba(245, 158, 11, 0.24) 100%);
    border-color: var(--rail-red);
    box-shadow: 0 0 14px rgba(239, 51, 64, 0.35);
}

.mode-icon {
    font-size: 0.85rem;
}

/* ─── PA Audio & Volume Controller Dock ─── */
.audio-control-dock {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(15, 23, 42, 0.75);
    border: 1px solid var(--border);
    border-radius: var(--radius-full, 999px);
    padding: 4px 12px;
    backdrop-filter: blur(8px);
}

.btn-sound-mute {
    background: transparent;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2px;
    transition: transform 0.15s ease;
}

.btn-sound-mute:hover {
    transform: scale(1.15);
}

.btn-sound-mute.muted {
    filter: grayscale(1);
    opacity: 0.6;
}

.sound-slider-wrapper {
    display: flex;
    align-items: center;
    gap: 6px;
}

.sound-volume-slider {
    width: 64px;
    height: 4px;
    accent-color: var(--cyan);
    cursor: pointer;
}

.volume-val {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-muted);
    min-width: 26px;
}

/* ─── Module A: Alert Carousel & Conflict Dispatcher ─── */
.alert-carousel-container {
    margin-bottom: 1.25rem;
    animation: alertSlideDown 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes alertSlideDown {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}

.alert-carousel-card {
    background: linear-gradient(135deg, rgba(239, 51, 64, 0.15) 0%, rgba(15, 23, 42, 0.9) 60%), #0B1220;
    border: 1px solid rgba(239, 51, 64, 0.5);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5), 0 0 20px rgba(239, 51, 64, 0.2);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    flex-wrap: wrap;
    position: relative;
    overflow: hidden;
}

.alert-carousel-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--rail-red);
    box-shadow: 0 0 10px var(--rail-red);
}

.alert-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-pulse-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(239, 51, 64, 0.2);
    border: 1px solid var(--rail-red);
    padding: 3px 10px;
    border-radius: 999px;
    position: relative;
}

.alert-pulse-badge .pulse-ring {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--rail-red);
    animation: alertPulse 1.4s ease-in-out infinite alternate;
}

@keyframes alertPulse {
    0% { transform: scale(0.9); opacity: 0.6; box-shadow: 0 0 0 0 rgba(239, 51, 64, 0.6); }
    100% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 10px 4px rgba(239, 51, 64, 0.4); }
}

.alert-tag {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    color: #FFA1A8;
    letter-spacing: 0.05em;
}

.alert-time-badge {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--amber);
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.35);
    padding: 3px 8px;
    border-radius: 4px;
    font-weight: 700;
}

.alert-body {
    flex: 1;
    min-width: 280px;
}

.alert-message {
    font-size: 0.88rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.alert-recommendation {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.alert-recommendation .rec-label {
    color: var(--cyan);
    font-weight: 600;
    font-family: var(--font-mono);
}

.alert-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-reallocate-action {
    background: linear-gradient(135deg, #EF3340 0%, #C91A26 100%);
    color: #FFFFFF;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 0 16px rgba(239, 51, 64, 0.45);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn-reallocate-action:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 24px rgba(239, 51, 64, 0.7);
}

/* ─── Emergency Strobe Gate Hold Banner ─── */
.strobe-gate-banner {
    background: linear-gradient(90deg, #EF3340 0%, #B91C1C 50%, #EF3340 100%);
    background-size: 200% 100%;
    animation: strobeGradient 2s linear infinite;
    color: #FFFFFF;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    box-shadow: 0 0 30px rgba(239, 51, 64, 0.55);
}

@keyframes strobeGradient {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.strobe-text {
    font-size: 0.82rem;
    font-weight: 600;
}

.strobe-text span {
    font-family: var(--font-mono);
    text-decoration: underline;
    margin-left: 6px;
}

/* ─── Module B: FOB & Vertical Chokepoints Topology ─── */
.fob-topology-container {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.fob-topology-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 10px;
}

.topology-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 1.25rem;
}

.chokepoint-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    position: relative;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.chokepoint-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.2);
}

.chokepoint-card.safe { border-top: 3px solid var(--emerald); }
.chokepoint-card.warning { border-top: 3px solid var(--amber); }
.chokepoint-card.critical { border-top: 3px solid var(--rail-red); box-shadow: 0 0 16px rgba(239, 51, 64, 0.25); }

.chokepoint-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 6px;
}

.chokepoint-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary);
}

.chokepoint-density-val {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 800;
    color: #FFFFFF;
}

.chokepoint-unit {
    font-size: 0.68rem;
    color: var(--text-muted);
    margin-left: 2px;
}

.chokepoint-meter {
    height: 5px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    overflow: hidden;
    margin-top: 8px;
}

.chokepoint-meter-fill {
    height: 100%;
    border-radius: 999px;
    transition: width 0.4s ease;
}

.chokepoint-meter-fill.safe { background: var(--emerald); }
.chokepoint-meter-fill.warning { background: var(--amber); }
.chokepoint-meter-fill.critical { background: var(--rail-red); }

/* ─── Module C: Coach-Wise Crowd Density Strip ─── */
.coach-density-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-top: 1rem;
}

.coach-density-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.78rem;
}

.coach-track-strip {
    display: flex;
    align-items: center;
    gap: 4px;
    overflow-x: hidden;
    padding-bottom: 6px;
}

.coach-block {
    flex: 1;
    min-width: 58px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 4px;
    text-align: center;
    transition: all 0.2s ease;
    position: relative;
}

.coach-block:hover {
    transform: translateY(-2px);
}

.coach-block.green {
    border-color: rgba(16, 185, 129, 0.5);
    background: rgba(16, 185, 129, 0.08);
}
.coach-block.amber {
    border-color: rgba(245, 158, 11, 0.5);
    background: rgba(245, 158, 11, 0.08);
}
.coach-block.red {
    border-color: rgba(239, 51, 64, 0.6);
    background: rgba(239, 51, 64, 0.12);
}

.coach-block.engine {
    background: rgba(59, 130, 246, 0.15);
    border-color: var(--blue);
}

.coach-name {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.coach-status-tag {
    font-size: 0.62rem;
    font-weight: 600;
    margin-top: 2px;
}

.coach-status-tag.green { color: var(--emerald); }
.coach-status-tag.amber { color: var(--amber); }
.coach-status-tag.red { color: var(--rail-red); }

.dispersal-arrow-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(34, 211, 238, 0.08);
    border: 1px dashed rgba(34, 211, 238, 0.35);
    border-radius: var(--radius-sm);
    padding: 6px 12px;
    margin-top: 8px;
    font-size: 0.74rem;
    color: var(--cyan);
}

/* ─── Module D: Simulation Sandbox Control Panel ─── */
.sandbox-panel {
    background: linear-gradient(180deg, rgba(20, 34, 58, 0.9) 0%, rgba(11, 18, 32, 0.95) 100%);
    border: 1px solid rgba(59, 130, 246, 0.35);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
}

.sandbox-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.sandbox-controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr auto;
    gap: 16px;
    align-items: flex-end;
}

.sandbox-field label {
    display: block;
    font-size: 0.74rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 600;
}

.sandbox-slider-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sandbox-slider {
    flex: 1;
    height: 6px;
    accent-color: var(--rail-red);
    cursor: pointer;
}

.sandbox-slider-val {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.82rem;
    color: var(--amber);
    min-width: 28px;
}

.sandbox-select {
    width: 100%;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    cursor: pointer;
}

/* ─── Module E: Virtual Digital Station Display Board ─── */
.digital-display-board {
    background: #02050A;
    border: 3px solid #1E2C44;
    border-radius: var(--radius-md);
    padding: 12px;
    margin-bottom: 1.5rem;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.9), 0 8px 24px rgba(0, 0, 0, 0.6);
    font-family: 'JetBrains Mono', monospace;
}

.digital-display-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #F59E0B;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding-bottom: 8px;
    border-bottom: 1px dashed rgba(245, 158, 11, 0.3);
    margin-bottom: 8px;
    text-transform: uppercase;
}

.display-board-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.display-board-table th {
    text-align: left;
    color: #94A3B8;
    font-size: 0.7rem;
    padding: 4px 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.display-board-table td {
    padding: 8px;
    color: #FACC15;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.display-board-table tr:hover td {
    background: rgba(250, 204, 21, 0.04);
}

.led-pf {
    background: #DC2626;
    color: #FFFFFF;
    font-weight: 800;
    padding: 2px 8px;
    border-radius: 3px;
    display: inline-block;
}

.led-on-time { color: #10B981; font-weight: 700; }
.led-delayed { color: #EF3340; font-weight: 700; animation: blinkLed 1.2s infinite; }

@keyframes blinkLed {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ─── Module F: Scenario Replay & Audit Log ─── */
.scenario-replay-dock {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 6px 12px;
    border-radius: var(--radius-full, 999px);
}

.scenario-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.72rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.scenario-btn:hover, .scenario-btn.active {
    background: var(--cyan);
    color: #060B14;
    border-color: var(--cyan);
    font-weight: 700;
}

/* ─── Commuter Portal Dedicated Styles ─── */
.commuter-portal-container {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
}

.commuter-hero-card {
    background: linear-gradient(135deg, rgba(239, 51, 64, 0.18) 0%, rgba(59, 130, 246, 0.18) 100%), var(--bg-surface);
    border: 1px solid rgba(239, 51, 64, 0.4);
    border-radius: var(--radius-xl);
    padding: 1.75rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
}

.commuter-exit-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 1.25rem;
}

.exit-route-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 14px;
}

.exit-route-card.recommended {
    border-color: var(--emerald);
    background: rgba(16, 185, 129, 0.08);
}

.exit-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    background: rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.exit-route-card.recommended .exit-icon {
    background: rgba(16, 185, 129, 0.2);
    color: var(--emerald);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .topology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .sandbox-controls-grid {
        grid-template-columns: 1fr;
    }
    .commuter-exit-grid {
        grid-template-columns: 1fr;
    }
}

/* ─── NATIONAL INDIA RAILWAY MAP & RADAR ANIMATIONS ─────────────────────── */
.india-outline {
    fill: rgba(14, 28, 54, 0.45);
    stroke: #1E3A8A;
    stroke-width: 2.2;
    stroke-dasharray: 6 3;
    filter: drop-shadow(0 0 12px rgba(30, 58, 138, 0.4));
    transition: all 0.3s ease;
}

.map-gridline {
    stroke: rgba(255, 255, 255, 0.04);
    stroke-width: 1;
    stroke-dasharray: 4 4;
}

.corridor-glow {
    stroke: #3B82F6;
    stroke-width: 2.5;
    stroke-linecap: round;
    filter: drop-shadow(0 0 6px rgba(59, 130, 246, 0.6));
}

.chord-line-glow {
    stroke: #10B981 !important;
    stroke-width: 3 !important;
    filter: drop-shadow(0 0 8px rgba(16, 185, 129, 0.8)) !important;
}

.train-pulse-dot {
    fill: #F59E0B;
    stroke: #FFFFFF;
    stroke-width: 2;
    filter: drop-shadow(0 0 8px #F59E0B);
    animation: trainPulse 2s infinite alternate;
}

@keyframes trainPulse {
    0% { r: 5; opacity: 0.85; }
    100% { r: 8; opacity: 1.0; filter: drop-shadow(0 0 12px #EF4444); }
}

.node-pulse-ring {
    animation: ringGlow 3s infinite ease-out;
    transform-origin: center;
}

@keyframes ringGlow {
    0% { r: 8; opacity: 0.8; stroke-width: 2; }
    50% { r: 16; opacity: 0.2; stroke-width: 1; }
    100% { r: 22; opacity: 0; stroke-width: 0.5; }
}

/* ─── BOTTOM OPERATIONAL COMMAND DECK ──────────────────────────────────── */
.dash-bottom-deck {
    animation: fadeInDeck 0.6s ease-out;
}

@keyframes fadeInDeck {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.fleet-row {
    transition: background 0.2s ease;
    border-radius: 4px;
}

.fleet-row:hover {
    background: rgba(255, 255, 255, 0.04);
}

.signal-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-weight: 700;
    font-size: 0.72rem;
}

.signal-indicator.green { color: #10B981; }
.signal-indicator.yellow { color: #F59E0B; }
.signal-indicator.red { color: #EF4444; }

.speed-gauge-bar {
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.1);
    overflow: hidden;
    margin-top: 2px;
}

.speed-gauge-fill {
    height: 100%;
    background: linear-gradient(90deg, #3B82F6, #10B981);
    transition: width 0.5s ease;
}

.ai-thinking {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.84rem;
}

/* ═══════════════════════════════════════════════════════════════════════════════
   CONSOLE TERMINAL APPLICATION — Full Interactive Operations Terminal
   ═══════════════════════════════════════════════════════════════════════════════ */

.console-terminal-window {
    background: #0a0e17;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-strong);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 60px rgba(139, 92, 246, 0.08);
    min-height: 65vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Subtle CRT scanline overlay */
.console-terminal-window::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.04) 2px,
        rgba(0, 0, 0, 0.04) 4px
    );
    z-index: 1;
}

/* macOS-style Title Bar */
.console-titlebar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1rem;
    background: #111827;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.console-titlebar-dots {
    display: flex;
    gap: 6px;
}

.console-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.console-dot-red    { background: #FF5F57; }
.console-dot-yellow { background: #FFBD2E; }
.console-dot-green  { background: #28C840; }

.console-titlebar-text {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.console-titlebar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.console-status-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Terminal Output Scroll Area */
.console-output-area {
    flex: 1;
    padding: 1rem 1.25rem;
    overflow-y: auto;
    overflow-x: hidden;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    line-height: 1.65;
    color: #c4d3e0;
    min-height: 400px;
    max-height: 62vh;
    scroll-behavior: smooth;
    position: relative;
    z-index: 2;
}

.console-output-area::-webkit-scrollbar {
    width: 6px;
}
.console-output-area::-webkit-scrollbar-track {
    background: transparent;
}
.console-output-area::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

/* Console Line Styles */
.console-line {
    white-space: pre-wrap;
    word-break: break-word;
    padding: 1px 0;
    animation: consoleFadeIn 0.15s ease-out;
}

@keyframes consoleFadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.console-border      { color: #8B5CF6; font-weight: 600; }
.console-header      { color: #F3F7FF; font-weight: 700; }
.console-sub         { color: var(--text-muted); }
.console-info        { color: #93C5FD; }
.console-success     { color: #34D399; }
.console-error       { color: #F87171; }
.console-warn        { color: #FBBF24; }
.console-ai          { color: #A78BFA; font-weight: 600; }
.console-highlight   { color: #10B981; font-weight: 700; }
.console-cmd         { color: #E2E8F0; font-weight: 500; }
.console-prompt-static { color: #6366F1; font-weight: 700; }

/* Input Row */
.console-input-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    background: #0d1220;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    position: relative;
    z-index: 2;
}

.console-prompt {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 700;
    color: #6366F1;
    flex-shrink: 0;
    user-select: none;
}

.console-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: #F3F7FF;
    caret-color: #8B5CF6;
    letter-spacing: 0.02em;
}

.console-input::placeholder {
    color: var(--text-muted);
    opacity: 0.5;
}

.console-input:disabled {
    opacity: 0.4;
    cursor: wait;
}

/* Quick Command Chips */
.console-quick-chips {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding: 1rem 0;
    margin-top: 0.5rem;
}

.console-chip-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    flex-shrink: 0;
}

.console-chip {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.7rem;
    border-radius: 100px;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.console-chip:hover {
    background: var(--purple-dim);
    border-color: var(--purple);
    color: #A78BFA;
    box-shadow: 0 0 12px rgba(139, 92, 246, 0.15);
    transform: translateY(-1px);
}

.console-chip:active {
    transform: translateY(0);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .console-output-area {
        min-height: 300px;
        max-height: 55vh;
        font-size: 0.72rem;
        padding: 0.75rem;
    }
    .console-terminal-window {
        min-height: 50vh;
    }
    .console-titlebar-text {
        display: none;
    }
    .console-input-row {
        padding: 0.5rem 0.75rem;
    }
}

/* ═══════════════════════════════════════════════════════════════════════
   MACHINA SCI-FI CYBER TELEMETRY DESIGN SYSTEM
   HUD Frame, Corner Ticks, Data Strips, Blueprint Markers,
   Kinetic Typography, Eyebrow Headers, Scanlines, Chevron Buttons
   ═══════════════════════════════════════════════════════════════════════ */

/* ─── HUD Fixed Telemetry Frame ──────────────────────────────────────── */
.hud-frame {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9998;
}

/* Corner Tick Brackets — 4 corners */
.hud-frame .ck {
    position: absolute;
    width: 28px;
    height: 28px;
    border-color: var(--cyan);
    border-style: solid;
    opacity: 0.35;
    transition: opacity 0.6s ease;
    animation: hud-glow-pulse 4s ease-in-out infinite;
}
.hud-frame:hover .ck { opacity: 0.65; }
.ck.tl { top: 6px; left: 6px; border-width: 2px 0 0 2px; }
.ck.tr { top: 6px; right: 6px; border-width: 2px 2px 0 0; animation-delay: 1s; }
.ck.bl { bottom: 6px; left: 6px; border-width: 0 0 2px 2px; animation-delay: 2s; }
.ck.br { bottom: 6px; right: 6px; border-width: 0 2px 2px 0; animation-delay: 3s; }

@keyframes hud-glow-pulse {
    0%, 100% { opacity: 0.35; }
    50% { opacity: 0.65; }
}

/* ─── HUD Bottom Telemetry Bar ───────────────────────────────────────── */
.hud-bar-top {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 36px;
    background: linear-gradient(90deg, rgba(11,18,32,0.95), rgba(15,23,42,0.9), rgba(11,18,32,0.95));
    border-top: 1px solid rgba(34,211,238,0.15);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem 0 calc(var(--sidebar-width) + 1rem);
    z-index: 9999;
    pointer-events: all;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    backdrop-filter: blur(8px);
}
@media (max-width: 768px) {
    .hud-bar-top { padding-left: 1rem; }
}

.hud-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--cyan);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.7rem;
}
.hud-brand .slash {
    color: var(--rail-red);
    font-weight: 700;
    margin: 0 0.15rem;
}

.hud-index {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-variant-numeric: tabular-nums;
}
.hud-index b {
    color: var(--cyan);
    font-size: 0.82rem;
}

.hud-nav-arrows {
    display: flex;
    gap: 0.25rem;
    pointer-events: all;
}
.hud-nav-arrows button {
    background: rgba(34,211,238,0.06);
    border: 1px solid rgba(34,211,238,0.18);
    color: var(--cyan);
    font-size: 0.7rem;
    padding: 2px 8px;
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.2s;
    font-family: var(--font-mono);
}
.hud-nav-arrows button:hover {
    background: rgba(34,211,238,0.15);
    border-color: var(--cyan);
    box-shadow: 0 0 10px rgba(34,211,238,0.2);
}

#live-clock {
    font-variant-numeric: tabular-nums;
    color: var(--emerald);
    font-weight: 600;
    font-size: 0.72rem;
}
#live-clock .ms {
    font-size: 0.6rem;
    color: var(--text-muted);
    opacity: 0.7;
}

.hud-progress {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.hud-progress-bar {
    width: 60px;
    height: 3px;
    background: rgba(34,211,238,0.1);
    border-radius: 2px;
    overflow: hidden;
}
.hud-progress-fill {
    height: 100%;
    background: var(--cyan);
    border-radius: 2px;
    transition: width 0.4s ease;
    box-shadow: 0 0 6px rgba(34,211,238,0.4);
}
.hud-pct {
    font-size: 0.62rem;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

/* ─── Telemetry Data Strip Ribbons ───────────────────────────────────── */
.data-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.5rem 0;
    font-family: var(--font-mono);
    font-size: 0.68rem;
}
.data-strip span {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.6rem;
    border: 1px solid rgba(34,211,238,0.12);
    border-radius: 3px;
    background: rgba(34,211,238,0.04);
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    white-space: nowrap;
    transition: all 0.25s;
}
.data-strip span:hover {
    border-color: rgba(34,211,238,0.3);
    background: rgba(34,211,238,0.08);
    color: var(--cyan);
    box-shadow: 0 0 8px rgba(34,211,238,0.12);
}
.data-strip .ds-val {
    color: var(--cyan);
    font-weight: 600;
}

/* ─── Blueprint Markers & Schematic Styling ──────────────────────────── */
.bp-marker {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
}
.bp-ring {
    width: 14px;
    height: 14px;
    border: 2px solid var(--cyan);
    border-radius: 50%;
    position: relative;
    box-shadow: 0 0 8px rgba(34,211,238,0.3);
}
.bp-ring::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    width: 5px; height: 5px;
    background: var(--cyan);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}
.bp-hairline {
    width: 1px;
    height: 24px;
    background: linear-gradient(180deg, var(--cyan), transparent);
}
.bp-data {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 2px;
}
.bp-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.5rem;
    border: 1px solid rgba(34,211,238,0.2);
    border-radius: 3px;
    background: rgba(34,211,238,0.06);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--cyan);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

/* ─── Kinetic Typography Panels ──────────────────────────────────────── */
.kinetic-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.25rem 1rem;
    border: 1px solid rgba(34,211,238,0.1);
    border-radius: var(--radius-sm);
    background: linear-gradient(180deg, rgba(34,211,238,0.03), transparent);
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
}
.kinetic-panel:hover {
    border-color: rgba(34,211,238,0.25);
    box-shadow: 0 0 20px rgba(34,211,238,0.08);
}
.kinetic-panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    opacity: 0.5;
}
.kinetic-value {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -0.02em;
    text-shadow: 0 0 20px rgba(34,211,238,0.15);
}
.kinetic-label {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* ─── Eyebrow Headers with Cyber Slashes ─────────────────────────────── */
.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}
.eyebrow .slash {
    color: var(--rail-red);
    font-weight: 700;
    font-size: 0.72rem;
    text-shadow: 0 0 8px rgba(239, 51, 64, 0.4);
}
.eyebrow .sys-num {
    color: var(--cyan);
    font-weight: 600;
}

/* ─── Scanline Overlay ───────────────────────────────────────────────── */
.scanline {
    position: relative;
    overflow: hidden;
}
.scanline::after {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.04) 2px,
        rgba(0, 0, 0, 0.04) 4px
    );
    pointer-events: none;
    z-index: 2;
}

/* ─── Seam Lines ─────────────────────────────────────────────────────── */
.seam {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(34,211,238,0.15), transparent);
    margin: 1rem 0;
}

/* ─── Chevron Buttons ────────────────────────────────────────────────── */
.btn-chev {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 1px solid rgba(34,211,238,0.2);
    border-radius: var(--radius-sm);
    background: rgba(34,211,238,0.04);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: all 0.25s;
}
.btn-chev:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    background: rgba(34,211,238,0.1);
    box-shadow: 0 0 14px rgba(34,211,238,0.15);
}
.chev { font-size: 0.6rem; }

/* ─── Data Strip inside metric-card enrichment ──────────────────────── */
.metric-card .data-strip {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* ─── Cyber Section Divider ──────────────────────────────────────────── */
.cyber-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(34,211,238,0.2) 20%, rgba(34,211,238,0.2) 80%, transparent 100%);
    margin: 1.5rem 0;
    position: relative;
}
.cyber-divider::before {
    content: '//';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-base);
    padding: 0 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--rail-red);
    letter-spacing: 0.1em;
    font-weight: 700;
}

/* ─── Telemetry Badge Inline ─────────────────────────────────────────── */
.tele-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.15rem 0.45rem;
    border: 1px solid rgba(16,185,129,0.2);
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--emerald);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    background: rgba(16,185,129,0.06);
}
.tele-badge::before {
    content: '';
    width: 5px;
    height: 5px;
    background: var(--emerald);
    border-radius: 50%;
    animation: pulse-glow 2s ease-in-out infinite;
}
@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16,185,129,0.4); }
    50% { box-shadow: 0 0 0 4px rgba(16,185,129,0); }
}

/* ─── Adjust main viewport bottom padding for HUD bar ────────────────── */
.main-viewport {
    padding-bottom: 42px;
}

/* ═════════════════════════════════════════════════════════════════════════
   JOURNEY PLANNER METRICS STRIP & CORRIDOR ENHANCEMENTS
   ═════════════════════════════════════════════════════════════════════════ */
.journey-metrics-strip {
    display: flex;
    gap: 0.65rem;
    flex-wrap: wrap;
    align-items: center;
    margin-top: 0.6rem;
}
.j-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-primary);
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    backdrop-filter: blur(4px);
    transition: all 0.2s ease;
}
.j-pill:hover {
    border-color: var(--rail-red);
    transform: translateY(-1px);
}
.j-pill.j-dist { border-color: rgba(59, 130, 246, 0.4); background: rgba(59, 130, 246, 0.1); color: #93C5FD; }
.j-pill.j-time { border-color: rgba(245, 158, 11, 0.4); background: rgba(245, 158, 11, 0.1); color: #FCD34D; }
.j-pill.j-stops { border-color: rgba(16, 185, 129, 0.4); background: rgba(16, 185, 129, 0.1); color: #6EE7B7; }
.j-pill.j-direct { border-color: rgba(139, 92, 246, 0.4); background: rgba(139, 92, 246, 0.1); color: #C4B5FD; }
.journey-stn {
    color: #F8FAFC;
    font-weight: 800;
    letter-spacing: 0.02em;
}
.journey-arrow {
    color: var(--rail-red);
    font-weight: 900;
    margin: 0 0.2rem;
    display: inline-block;
    animation: pulse-arrow 1.8s ease-in-out infinite;
}
@keyframes pulse-arrow {
    0%, 100% { transform: translateX(0); opacity: 0.8; }
    50% { transform: translateX(3px); opacity: 1; filter: drop-shadow(0 0 6px var(--rail-red)); }
}

/* ═════════════════════════════════════════════════════════════════════════
   STATION NETWORK HIERARCHY TREE — HIGH VISIBILITY CYBER STYLING
   ═════════════════════════════════════════════════════════════════════════ */
.tree-container {
    background: #080D18;
    border: 1px solid #1E293B;
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}
.tree-apex-card {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.12), rgba(15, 23, 42, 0.85));
    border: 1px solid rgba(239, 68, 68, 0.35);
    border-radius: 8px;
    padding: 0.85rem 1rem;
    margin-bottom: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
}
.tree-apex-card:hover {
    border-color: var(--rail-red);
    box-shadow: 0 0 16px rgba(239, 68, 68, 0.2);
}
.tree-zone-card {
    background: rgba(15, 23, 42, 0.75);
    border: 1px solid #1E293B;
    border-radius: 8px;
    margin-bottom: 0.6rem;
    overflow: hidden;
    transition: all 0.2s ease;
}
.tree-zone-card:hover {
    border-color: rgba(59, 130, 246, 0.4);
}
.tree-zone-header {
    padding: 0.65rem 0.9rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    background: rgba(30, 41, 59, 0.4);
    transition: background 0.2s ease;
}
.tree-zone-header:hover {
    background: rgba(30, 41, 59, 0.8);
}
.tree-zone-header .zone-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: #F1F5F9;
    display: flex;
    align-items: center;
    gap: 8px;
}
.tree-zone-header .zone-caret {
    font-size: 0.75rem;
    color: #64748B;
    transition: transform 0.2s ease;
}
.tree-zone-card.collapsed .zone-caret {
    transform: rotate(-90deg);
}
.tree-zone-card.collapsed .tree-zone-body {
    display: none;
}
.tree-zone-body {
    padding: 0.5rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    border-top: 1px solid #1E293B;
}
.tree-station-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.45rem 0.7rem;
    background: rgba(10, 15, 26, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    transition: all 0.15s ease;
}
.tree-station-card:hover {
    background: rgba(30, 58, 138, 0.15);
    border-color: rgba(59, 130, 246, 0.4);
    transform: translateX(3px);
}
.tree-stn-code {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 800;
    color: var(--rail-red);
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.25);
    padding: 2px 7px;
    border-radius: 4px;
    margin-right: 8px;
}
.tree-stn-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: #E2E8F0;
}
.tree-pf-chip {
    font-size: 0.70rem;
    font-weight: 600;
    color: #34D399;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    padding: 2px 6px;
    border-radius: 4px;
}

/* ═════════════════════════════════════════════════════════════════════════
   SYSTEM 09 — INTERACTIVE TRAIN ARCHITECTURE PIPELINE
   ═════════════════════════════════════════════════════════════════════════ */
.arch-pipeline-wrap {
    position: relative;
    padding: 1rem 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}
.pipeline-track-container {
    position: relative;
    padding-left: 56px;
}
/* Vertical Railroad Track */
.pipeline-rail-track {
    position: absolute;
    top: 20px;
    bottom: 20px;
    left: 24px;
    width: 14px;
    border-left: 3px solid #475569;
    border-right: 3px solid #475569;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent 10px,
        #334155 10px,
        #334155 14px
    );
    z-index: 1;
}
.pipeline-rail-track.active-track {
    border-color: #06B6D4;
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
}
/* Animated Train Locomotive */
.pipeline-train-loco {
    position: absolute;
    left: 11px;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #EF4444, #B91C1C);
    border: 2px solid #FCA5A5;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    z-index: 10;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.7);
    transition: top 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.pipeline-train-loco::after {
    content: '';
    position: absolute;
    top: -6px;
    left: 14px;
    width: 8px;
    height: 8px;
    background: #FEF08A;
    border-radius: 50%;
    box-shadow: 0 0 12px 4px #FDE047;
}
/* Architectural Stages */
.pipeline-stage {
    position: relative;
    background: rgba(15, 23, 42, 0.85);
    border: 1px solid #1E293B;
    border-radius: 10px;
    padding: 1.1rem 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 2;
}
.pipeline-stage:hover {
    border-color: #38BDF8;
    transform: translateX(4px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}
.pipeline-stage.stage-active {
    border-color: #F59E0B;
    background: rgba(30, 41, 59, 0.95);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.25);
}
.pipeline-stage.stage-completed {
    border-color: #10B981;
    background: rgba(15, 23, 42, 0.92);
}
.pipeline-stage.stage-completed .stage-signal {
    background: #10B981;
    box-shadow: 0 0 10px #10B981;
}
.stage-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}
.stage-title {
    font-size: 0.95rem;
    font-weight: 800;
    color: #F8FAFC;
    display: flex;
    align-items: center;
    gap: 8px;
}
.stage-signal {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #EF4444;
    box-shadow: 0 0 6px #EF4444;
    transition: all 0.3s ease;
}
.stage-desc {
    font-size: 0.82rem;
    color: #94A3B8;
    line-height: 1.5;
    margin-bottom: 0.75rem;
}
.stage-tech-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    align-items: center;
}
.stage-pill {
    font-family: var(--font-mono);
    font-size: 0.70rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 4px;
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #CBD5E1;
}
.stage-metric-badge {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 4px;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #34D399;
}
.pipeline-status-card {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 41, 59, 0.7));
    border: 1px solid #334155;
    border-radius: 10px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

/* ═══════════════════════════════════════════════════════════════════════
   RAILFLOW PERFORMANCE & MOBILE OVERHAUL v3.0
   GPU Compositing · Hidden-Page Savings · Responsive Header ·
   Mobile Bottom Nav · Touch-Friendly Targets · Reduced Motion
   ═══════════════════════════════════════════════════════════════════════ */

/* ─── GPU Layer Promotion for Animated Elements ──────────────────────── */
.sidebar,
.station-drawer,
.ai-drawer,
.search-results-dropdown,
.top-header,
.toast-container {
    will-change: transform;
}

.pulse-dot,
.pulse-ring,
.hud-frame .ck {
    will-change: opacity, transform;
}

/* Contain layout/paint within cards to prevent full-page relayout */
.metric-card,
.panel-card,
.fleet-row,
.platform-bar-bg,
.alert-carousel-card {
    contain: layout paint;
}

/* ─── Hidden Page Rendering Savings ─────────────────────────────────── */
/* Pages that are not active don't need to be painted */
.page-view:not(.active) {
    content-visibility: hidden;
    display: none;
}

/* ─── Reduce Expensive Backdrop Blur on Lower-End Devices ────────────── */
@media (max-width: 768px) {
    .top-header {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: #0F172A;
    }
    .hud-bar-top {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: rgba(11, 18, 32, 0.98);
    }
    /* Disable HUD corner ticks on mobile (saves animation overhead) */
    .hud-frame .ck {
        display: none;
    }
}

/* ─── Mobile Header: Collapse Correctly ─────────────────────────────── */
@media (max-width: 768px) {
    .top-header {
        height: 56px;
        padding: 0 0.75rem;
        gap: 0.5rem;
        flex-wrap: nowrap;
        overflow: hidden;
    }

    /* Search takes remaining space */
    .search-container {
        flex: 1 1 auto;
        min-width: 0;
        max-width: unset;
    }

    .search-input-wrapper {
        padding: 0.38rem 0.65rem;
    }

    .search-input {
        font-size: 0.8rem;
    }

    .search-input::placeholder {
        font-size: 0.76rem;
    }

    /* Hide non-critical header items on mobile */
    .pipeline-ticker,
    .btn-guide,
    .btn-pnr-status,
    .sound-slider-wrapper {
        display: none !important;
    }

    /* Shrink view mode toggle text */
    .view-mode-toggle .mode-text {
        display: none;
    }

    .view-mode-btn {
        padding: 0.35rem 0.55rem;
        font-size: 0.72rem;
        min-height: 32px;
    }

    .audio-control-dock {
        gap: 0;
    }

    .btn-sound-mute {
        width: 34px;
        height: 34px;
        min-width: 34px;
        font-size: 0.95rem;
    }

    /* Compact AI button */
    .btn-ai-toggle {
        padding: 0.35rem 0.55rem !important;
        font-size: 0.72rem !important;
        height: auto !important;
    }

    .btn-ai-toggle .badge-ai-pulse {
        display: none;
    }

    /* Hamburger visible */
    .hamburger-btn {
        flex-shrink: 0;
    }
}

/* ─── Mobile Viewport: Main Content ─────────────────────────────────── */
@media (max-width: 768px) {
    body {
        overflow: hidden;
    }

    /* Ensure content doesn't overflow horizontally */
    .main-viewport {
        padding: 0.85rem 0.85rem 5rem; /* bottom for mobile nav */
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
    }

    /* Page gaps */
    .page-view {
        gap: 1rem;
    }

    /* View headers stack better */
    .view-header {
        gap: 0.65rem;
    }

    .view-title {
        font-size: 1.25rem !important;
    }

    /* All grid panels become single column */
    .metrics-grid,
    .db-explorer-grid,
    [class*="grid-cols"],
    .bottom-deck-row {
        grid-template-columns: 1fr !important;
    }

    /* Tables: horizontal scroll */
    .table-responsive-wrapper,
    .sql-mini-table,
    .data-table-wrap {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Prevent table cells from forcing wide layout */
    table {
        min-width: 480px;
    }

    /* Override any fixed widths */
    .panel-card,
    .metric-card,
    .card {
        width: 100% !important;
        max-width: 100% !important;
        min-width: 0 !important;
    }

    /* Corridor preset chips: scroll horizontally */
    .corridor-preset-bar {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 0.5rem;
    }

    /* Drawers: full screen on mobile */
    .station-drawer,
    .ai-drawer {
        width: 100vw !important;
        max-width: 100vw !important;
    }

    /* Planner form */
    .planner-form {
        grid-template-columns: 1fr !important;
    }

    /* Alert carousel */
    .alert-carousel-container {
        margin: 0 -0.1rem;
    }

    /* Fleet rows: compact */
    .fleet-row {
        grid-template-columns: 1.5fr 1fr 0.8fr !important;
        font-size: 0.7rem !important;
    }

    /* HUD bar: smaller on mobile */
    .hud-bar-top {
        height: 30px;
        font-size: 0.62rem;
        padding: 0 0.75rem;
    }

    /* Bottom nav padding to prevent content behind hud bar */
    .main-viewport {
        padding-bottom: calc(30px + 4rem);
    }
}

/* ─── Touch Targets: 44px minimum ───────────────────────────────────── */
@media (max-width: 768px) {
    .btn,
    .nav-item,
    .view-mode-btn,
    .btn-corridor-chip,
    .swap-btn,
    input[type="range"],
    select {
        min-height: 44px;
    }

    /* But compact badges don't need full touch target */
    .badge {
        min-height: unset;
    }

    /* Table cells: enough spacing */
    .data-table-wrap td,
    .data-table-wrap th {
        padding: 0.5rem 0.65rem !important;
    }

    /* Inputs bigger */
    input[type="text"],
    input[type="search"],
    input[type="number"],
    select,
    textarea {
        font-size: 16px !important; /* prevents iOS zoom-in on focus */
        min-height: 44px;
    }
}

/* ─── Mobile Bottom Navigation (for key pages) ───────────────────────── */
@media (max-width: 768px) {
    /* Floating bottom nav bar */
    .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 30px; /* above hud bar */
        left: 0;
        right: 0;
        height: 52px;
        background: rgba(11, 18, 32, 0.97);
        border-top: 1px solid #263752;
        z-index: 9000;
        align-items: center;
        justify-content: space-around;
        padding: 0 0.5rem;
        backdrop-filter: none;
    }

    .mobile-bottom-nav .mnav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1px;
        font-size: 0.55rem;
        color: var(--text-muted);
        text-decoration: none;
        padding: 0.35rem 0.65rem;
        border-radius: 8px;
        transition: color 120ms ease;
        min-width: 48px;
        min-height: 44px;
        justify-content: center;
        cursor: pointer;
        background: transparent;
        border: none;
        font-family: var(--font-sans);
        text-transform: uppercase;
        letter-spacing: 0.06em;
        font-weight: 600;
    }

    .mobile-bottom-nav .mnav-item .mnav-icon {
        font-size: 1.15rem;
        line-height: 1;
    }

    .mobile-bottom-nav .mnav-item.active,
    .mobile-bottom-nav .mnav-item:hover {
        color: var(--cyan);
    }
}

/* Desktop: hide bottom nav */
@media (min-width: 769px) {
    .mobile-bottom-nav { display: none; }
}

/* ─── Extra-Small Phones (≤ 400px) ──────────────────────────────────── */
@media (max-width: 400px) {
    .main-viewport {
        padding: 0.65rem 0.65rem calc(30px + 4rem);
    }

    .view-mode-toggle {
        display: none; /* too narrow — accessible via sidebar */
    }

    .top-header {
        gap: 0.35rem;
    }

    /* Only show hamburger + search + AI btn */
    .audio-control-dock {
        display: none;
    }

    .search-input::placeholder {
        font-size: 0.7rem;
    }
}

/* ─── Smooth Scroll & Scroll Snap Helpers ────────────────────────────── */
.main-viewport {
    scroll-behavior: smooth;
}

/* ─── Reduce animation cost on low-power devices ─────────────────────── */
@media (prefers-reduced-motion: reduce), (update: slow) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ─── Fix sidebar nav overflow (text was being clipped) ─────────────── */
.sidebar-nav {
    overflow-y: auto;
}

/* ─── SVG Network Graph: Mobile constraints ──────────────────────────── */
@media (max-width: 768px) {
    .network-graph-container svg,
    .network-svg-wrap svg {
        max-height: 55vh;
        width: 100% !important;
    }
}

/* ─── Prevent text overflow in table cells ───────────────────────────── */
.data-table-wrap td {
    word-break: break-word;
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ─── Metric Cards: Better mobile layout ─────────────────────────────── */
@media (max-width: 768px) {
    .metrics-grid {
        display: grid;
        grid-template-columns: 1fr 1fr !important;
        gap: 0.65rem !important;
    }

    .metric-card {
        padding: 0.75rem !important;
    }

    .metric-value {
        font-size: 1.4rem !important;
    }
}

@media (max-width: 400px) {
    .metrics-grid {
        grid-template-columns: 1fr !important;
    }
}