/* ============================================================
   The Flow Paradox — Design System & Styles
   Stratflow branded, dark industrial mining theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============================================================
   CSS VARIABLES
   ============================================================ */
:root {
    /* Brand Colors — Stratflow */
    --brand-primary: #d4a843;
    --brand-primary-light: #e8c46a;
    --brand-primary-dark: #b08a2a;
    --brand-glow: rgba(212, 168, 67, 0.3);

    /* Dark Industrial Palette */
    --bg-darkest: #0a0e17;
    --bg-dark: #0f1523;
    --bg-card: #151d2e;
    --bg-card-hover: #1a2540;
    --bg-surface: #1e2a42;
    --bg-elevated: #243352;

    /* Text */
    --text-primary: #f0f2f5;
    --text-secondary: #8b95a8;
    --text-muted: #5a6478;
    --text-accent: var(--brand-primary);

    /* Station States */
    --state-running: #22c55e;
    --state-starved: #eab308;
    --state-blocked: #f97316;
    --state-down: #ef4444;
    --state-idle: #6b7280;

    /* Buffer Zones */
    --buffer-green: #22c55e;
    --buffer-yellow: #eab308;
    --buffer-red: #ef4444;

    /* Chart Colors */
    --chart-1: #3b82f6;
    --chart-2: #8b5cf6;
    --chart-3: #06b6d4;
    --chart-4: #f59e0b;
    --chart-5: #10b981;
    --chart-6: #ef4444;
    --chart-output: #ffffff;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--brand-glow);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-darkest);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Background gradient pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 0%, rgba(212, 168, 67, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(59, 130, 246, 0.06) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-darkest) 0%, var(--bg-dark) 100%);
    pointer-events: none;
    z-index: -1;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: 2.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.75rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.25rem;
}

h4 {
    font-size: 1rem;
}

.text-accent {
    color: var(--brand-primary);
}

.text-muted {
    color: var(--text-secondary);
}

.text-mono {
    font-family: 'JetBrains Mono', monospace;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    background: rgba(15, 21, 35, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(212, 168, 67, 0.15);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
}

.navbar-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.navbar-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.navbar-title span {
    color: var(--brand-primary);
}

.navbar-nav {
    display: flex;
    gap: var(--space-md);
    list-style: none;
}

.navbar-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.navbar-nav a:hover,
.navbar-nav a.active {
    color: var(--brand-primary);
    background: rgba(212, 168, 67, 0.1);
}

/* ============================================================
   LANDING PAGE — HERO
   ============================================================ */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 73px);
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: rgba(212, 168, 67, 0.1);
    border: 1px solid rgba(212, 168, 67, 0.25);
    border-radius: 100px;
    color: var(--brand-primary);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-lg);
}

.hero-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--brand-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(1.5);
    }
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--text-primary), var(--brand-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: var(--space-2xl);
}

.hero-quote {
    max-width: 700px;
    padding: var(--space-lg) var(--space-xl);
    background: rgba(212, 168, 67, 0.05);
    border-left: 3px solid var(--brand-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin-bottom: var(--space-3xl);
    text-align: left;
}

.hero-quote blockquote {
    font-size: 1.05rem;
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

.hero-quote cite {
    font-size: 0.85rem;
    color: var(--brand-primary);
    font-style: normal;
    font-weight: 500;
}

/* ============================================================
   MODE SELECTION CARDS
   ============================================================ */
.mode-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    max-width: 1000px;
    width: 100%;
}

.mode-card {
    position: relative;
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: block;
}

.mode-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--brand-primary), var(--brand-primary-light));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.mode-card:hover {
    transform: translateY(-4px);
    border-color: rgba(212, 168, 67, 0.3);
    box-shadow: var(--shadow-glow);
}

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

.mode-card.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.mode-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.mode-card-icon.discovery {
    background: rgba(59, 130, 246, 0.15);
    color: var(--chart-1);
}

.mode-card-icon.challenge {
    background: rgba(212, 168, 67, 0.15);
    color: var(--brand-primary);
}

.mode-card-icon.sandbox {
    background: rgba(16, 185, 129, 0.15);
    color: var(--chart-5);
}

.mode-card h3 {
    margin-bottom: var(--space-sm);
}

.mode-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.mode-card-badge {
    display: inline-block;
    padding: 2px var(--space-sm);
    background: rgba(100, 116, 139, 0.2);
    border-radius: 100px;
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--space-md);
}

/* ============================================================
   SIMULATION PAGE LAYOUT
   ============================================================ */
.sim-container {
    display: grid;
    grid-template-rows: auto 1fr auto;
    min-height: calc(100vh - 73px);
    padding: var(--space-md);
    gap: var(--space-md);
}

/* ============================================================
   DASHBOARD — TOP METRICS
   ============================================================ */
.dashboard {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.metric-card {
    flex: 1;
    min-width: 120px;
    padding: var(--space-md);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    text-align: center;
}

.metric-card .metric-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

.metric-card .metric-value {
    font-size: 1.4rem;
    font-weight: 800;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-primary);
}

.metric-card .metric-value.positive {
    color: var(--state-running);
}

.metric-card .metric-value.negative {
    color: var(--state-down);
}

.metric-card .metric-value.accent {
    color: var(--brand-primary);
}

.metric-card.highlight {
    border-color: rgba(212, 168, 67, 0.3);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(212, 168, 67, 0.05) 100%);
}

/* ============================================================
   PRODUCTION CHAIN DISPLAY
   ============================================================ */
.chain-container {
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
}

.chain-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
    font-weight: 600;
}

.chain-flow {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    overflow-x: auto;
    padding: var(--space-sm) 0;
}

/* Source / Output icons */
.chain-endpoint {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    flex-shrink: 0;
}

.chain-endpoint-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    background: var(--bg-surface);
    border: 2px solid var(--text-muted);
}

.chain-endpoint-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* Flow arrows */
.chain-arrow {
    font-size: 1.2rem;
    color: var(--text-muted);
    flex-shrink: 0;
    opacity: 0.5;
}

/* Station boxes */
.station {
    flex: 1;
    min-width: 110px;
    max-width: 160px;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    border: 2px solid transparent;
    text-align: center;
    transition: all var(--transition-fast);
    position: relative;
    flex-shrink: 0;
}

.station.constraint {
    border-color: var(--brand-primary);
    box-shadow: 0 0 12px rgba(212, 168, 67, 0.2);
}

.station.constraint::after {
    content: 'CONSTRAINT';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.55rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--brand-primary);
    background: var(--bg-card);
    padding: 1px 6px;
    border-radius: 4px;
    border: 1px solid rgba(212, 168, 67, 0.3);
}

.station-name {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.station-capacity {
    font-size: 2rem;
    font-weight: 900;
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: var(--space-xs);
    transition: color var(--transition-fast);
}

.station-base {
    font-size: 0.65rem;
    color: var(--text-muted);
}

/* Station state colors */
.station.state-running {
    border-color: var(--state-running);
}

.station.state-running .station-capacity {
    color: var(--state-running);
}

.station.state-starved {
    border-color: var(--state-starved);
}

.station.state-starved .station-capacity {
    color: var(--state-starved);
}

.station.state-blocked {
    border-color: var(--state-blocked);
}

.station.state-blocked .station-capacity {
    color: var(--state-blocked);
}

.station.state-down {
    border-color: var(--state-down);
    animation: station-shake 0.5s ease-in-out;
}

.station.state-down .station-capacity {
    color: var(--state-down);
}

.station.state-idle .station-capacity {
    color: var(--state-idle);
}

@keyframes station-shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-3px);
    }

    75% {
        transform: translateX(3px);
    }
}

/* Station status indicator dot */
.station-status {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: var(--space-xs);
    vertical-align: middle;
}

.station-status.running {
    background: var(--state-running);
    box-shadow: 0 0 6px var(--state-running);
}

.station-status.starved {
    background: var(--state-starved);
    box-shadow: 0 0 6px var(--state-starved);
}

.station-status.blocked {
    background: var(--state-blocked);
    box-shadow: 0 0 6px var(--state-blocked);
}

.station-status.down {
    background: var(--state-down);
    box-shadow: 0 0 6px var(--state-down);
    animation: pulse 1s infinite;
}

.station-status.idle {
    background: var(--state-idle);
}

/* ============================================================
   BUFFER VISUALIZATION
   ============================================================ */
.buffer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    flex-shrink: 0;
    min-width: 50px;
}

.buffer-tank {
    width: 36px;
    height: 80px;
    border: 2px solid var(--brand-primary);
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.3);
    box-shadow: 0 0 10px rgba(212, 168, 67, 0.15);
}

.buffer-fill {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    transition: height var(--transition-normal), background var(--transition-normal);
    border-radius: 0 0 3px 3px;
}

.buffer-fill.zone-green {
    background: linear-gradient(0deg, var(--buffer-green), rgba(34, 197, 94, 0.6));
}

.buffer-fill.zone-yellow {
    background: linear-gradient(0deg, var(--buffer-yellow), rgba(234, 179, 8, 0.6));
}

.buffer-fill.zone-red {
    background: linear-gradient(0deg, var(--buffer-red), rgba(239, 68, 68, 0.6));
}

.buffer-level-text {
    font-size: 0.6rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-secondary);
    font-weight: 600;
}

.buffer-label {
    font-size: 0.55rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* ============================================================
   CHAIN OUTPUT INDICATOR
   ============================================================ */
.chain-output-box {
    padding: var(--space-md) var(--space-lg);
    background: linear-gradient(135deg, rgba(212, 168, 67, 0.1), rgba(212, 168, 67, 0.05));
    border: 2px solid var(--brand-primary);
    border-radius: var(--radius-md);
    text-align: center;
    flex-shrink: 0;
    min-width: 100px;
    box-shadow: var(--shadow-glow);
}

.chain-output-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--brand-primary);
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.chain-output-value {
    font-size: 2.2rem;
    font-weight: 900;
    font-family: 'JetBrains Mono', monospace;
    color: var(--brand-primary);
}

/* ============================================================
   CONTROLS
   ============================================================ */
.controls {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-light));
    color: var(--bg-darkest);
    box-shadow: 0 2px 8px rgba(212, 168, 67, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(212, 168, 67, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: var(--bg-elevated);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-secondary.active {
    background: rgba(212, 168, 67, 0.15);
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--state-down);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.25);
}

.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.75rem;
}

.btn-lg {
    padding: var(--space-md) var(--space-2xl);
    font-size: 1rem;
}

/* Speed selector */
.speed-selector {
    display: flex;
    gap: 2px;
    background: var(--bg-darkest);
    border-radius: var(--radius-sm);
    padding: 2px;
}

.speed-btn {
    padding: 4px 12px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-muted);
    font-family: 'Inter', sans-serif;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.speed-btn.active {
    background: var(--brand-primary);
    color: var(--bg-darkest);
}

.speed-btn:hover:not(.active) {
    color: var(--text-primary);
}

/* Day counter */
.day-counter {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-darkest);
    border-radius: var(--radius-sm);
}

.day-counter span {
    color: var(--brand-primary);
}

/* ============================================================
   CHARTS AREA
   ============================================================ */
.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.chart-panel {
    padding: var(--space-md);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
}

.chart-panel.full-width {
    grid-column: 1 / -1;
}

.chart-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.chart-canvas-container {
    position: relative;
    width: 100%;
    height: 250px;
}

.chart-canvas-container.tall {
    height: 300px;
}

/* ============================================================
   GOLDRATT QUOTE BAR
   ============================================================ */
.quote-bar {
    padding: var(--space-md) var(--space-xl);
    background: rgba(212, 168, 67, 0.05);
    border-top: 1px solid rgba(212, 168, 67, 0.15);
    text-align: center;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.quote-text {
    font-style: italic;
    font-size: 0.9rem;
    color: var(--text-secondary);
    max-width: 900px;
    line-height: 1.5;
}

.quote-text .author {
    color: var(--brand-primary);
    font-style: normal;
    font-weight: 500;
    margin-left: var(--space-sm);
    font-size: 0.8rem;
}

/* ============================================================
   CHALLENGE MODE — SIDE BY SIDE
   ============================================================ */
.challenge-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.challenge-panel {
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    position: relative;
}

.challenge-panel.op-a {
    border-top: 3px solid var(--state-down);
}

.challenge-panel.op-b {
    border-top: 3px solid var(--state-running);
}

.operation-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.operation-badge {
    padding: 2px var(--space-sm);
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.operation-badge.op-a {
    background: rgba(239, 68, 68, 0.15);
    color: var(--state-down);
}

.operation-badge.op-b {
    background: rgba(34, 197, 94, 0.15);
    color: var(--state-running);
}

.operation-name {
    font-size: 0.85rem;
    font-weight: 600;
}

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

/* Comparison table */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--space-md);
}

.comparison-table th,
.comparison-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: center;
    font-size: 0.8rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.comparison-table th {
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.65rem;
    font-weight: 600;
}

.comparison-table td.op-a-val {
    color: var(--state-down);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
}

.comparison-table td.op-b-val {
    color: var(--state-running);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
}

.comparison-table td.winner {
    position: relative;
}

.comparison-table td.winner::after {
    content: '✓';
    margin-left: 4px;
    font-size: 0.7rem;
}

/* ============================================================
   DATA TABLE — DAY BY DAY GRID
   ============================================================ */
.data-table-container {
    max-height: 300px;
    overflow-y: auto;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
}

.data-table thead {
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table th {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-surface);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-size: 0.65rem;
    font-weight: 600;
    white-space: nowrap;
    border-bottom: 2px solid rgba(255, 255, 255, 0.08);
}

.data-table td {
    padding: var(--space-xs) var(--space-md);
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    transition: background var(--transition-fast);
}

.data-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.data-table tr:last-child td {
    background: rgba(212, 168, 67, 0.05);
}

.data-table td.breakdown {
    color: var(--state-down);
    font-weight: 700;
}

.data-table td.chain-min {
    color: var(--brand-primary);
    font-weight: 700;
}

.data-table td.day-col {
    color: var(--text-muted);
}

/* ============================================================
   AHA MOMENTS — POPUP OVERLAYS
   ============================================================ */
.aha-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-slow);
}

.aha-overlay.visible {
    opacity: 1;
    pointer-events: all;
}

.aha-card {
    max-width: 500px;
    padding: var(--space-2xl);
    background: var(--bg-card);
    border: 1px solid rgba(212, 168, 67, 0.3);
    border-radius: var(--radius-xl);
    box-shadow: 0 0 40px rgba(212, 168, 67, 0.15);
    text-align: center;
    transform: scale(0.9);
    transition: transform var(--transition-slow);
}

.aha-overlay.visible .aha-card {
    transform: scale(1);
}

.aha-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.aha-card h2 {
    margin-bottom: var(--space-md);
    color: var(--brand-primary);
}

.aha-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.aha-formula {
    padding: var(--space-md);
    background: var(--bg-darkest);
    border-radius: var(--radius-sm);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--brand-primary);
    margin-bottom: var(--space-lg);
}

/* ============================================================
   NAVBAR AUTH DISPLAY
   ============================================================ */
.navbar-auth {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-left: var(--space-md);
}

.user-name {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-light));
    color: var(--bg-darkest);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

/* ============================================================
   SECONDARY LINKS (HOME PAGE)
   ============================================================ */
.secondary-links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

/* ============================================================
   LEADERBOARD
   ============================================================ */
.leaderboard-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl);
    min-height: calc(100vh - 73px);
}

.leaderboard-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.leaderboard-header h1 {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    background: linear-gradient(135deg, var(--text-primary), var(--brand-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.leaderboard-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.leaderboard-tabs {
    display: flex;
    gap: 2px;
    background: var(--bg-darkest);
    border-radius: var(--radius-sm);
    padding: 2px;
    margin-bottom: var(--space-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.leaderboard-tab {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-muted);
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.leaderboard-tab.active {
    background: var(--brand-primary);
    color: var(--bg-darkest);
}

.leaderboard-tab:hover:not(.active) {
    color: var(--text-primary);
}

.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.leaderboard-table th {
    padding: var(--space-md);
    background: var(--bg-surface);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.65rem;
    font-weight: 600;
    text-align: left;
    border-bottom: 2px solid rgba(255, 255, 255, 0.08);
}

.leaderboard-table td {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.85rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.leaderboard-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.leaderboard-table tr.current-user td {
    background: rgba(212, 168, 67, 0.08);
    border-color: rgba(212, 168, 67, 0.15);
}

.leaderboard-rank {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    color: var(--text-muted);
    width: 50px;
}

.leaderboard-rank.gold {
    color: #fbbf24;
}

.leaderboard-rank.silver {
    color: #94a3b8;
}

.leaderboard-rank.bronze {
    color: #d97706;
}

.leaderboard-player {
    font-weight: 600;
    color: var(--text-primary);
}

.leaderboard-mode {
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 100px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.leaderboard-mode.discovery {
    background: rgba(59, 130, 246, 0.15);
    color: var(--chart-1);
}

.leaderboard-mode.challenge {
    background: rgba(212, 168, 67, 0.15);
    color: var(--brand-primary);
}

.leaderboard-mode.sandbox {
    background: rgba(16, 185, 129, 0.15);
    color: var(--chart-5);
}

.leaderboard-value {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
}

.leaderboard-empty {
    text-align: center;
    padding: var(--space-3xl);
    color: var(--text-muted);
}

.leaderboard-empty p {
    font-size: 0.9rem;
    margin-top: var(--space-md);
}

/* ============================================================
   SANDBOX CONFIG PANEL
   ============================================================ */
.sandbox-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: var(--space-md);
    padding: var(--space-md);
    min-height: calc(100vh - 73px);
}

.config-panel {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    overflow-y: auto;
    max-height: calc(100vh - 100px);
    position: sticky;
    top: 80px;
}

.config-panel h2 {
    font-size: 1rem;
    margin-bottom: var(--space-lg);
    color: var(--brand-primary);
}

.config-section {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.config-section:last-child {
    border-bottom: none;
}

.config-section h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
    font-weight: 600;
}

.config-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.config-row label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.config-row .config-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--brand-primary);
    min-width: 30px;
    text-align: right;
}

.config-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: var(--bg-darkest);
    border-radius: 2px;
    outline: none;
    margin: var(--space-sm) 0;
}

.config-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--brand-primary);
    cursor: pointer;
    box-shadow: 0 0 6px rgba(212, 168, 67, 0.3);
}

.config-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--brand-primary);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 6px rgba(212, 168, 67, 0.3);
}

.config-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    cursor: pointer;
}

.config-checkbox input[type="checkbox"] {
    accent-color: var(--brand-primary);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.config-checkbox label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.station-config-item {
    padding: var(--space-sm);
    background: var(--bg-darkest);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.station-config-item .station-config-name {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: var(--space-xs);
    font-weight: 600;
}

.sandbox-sim-area {
    display: grid;
    grid-template-rows: auto auto 1fr auto;
    gap: var(--space-md);
}

/* ============================================================
   TUTORIAL
   ============================================================ */
.tutorial-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    padding: var(--space-md);
    min-height: calc(100vh - 73px);
}

.tutorial-instruction-panel {
    background: var(--bg-card);
    border: 1px solid rgba(212, 168, 67, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
}

.tutorial-instruction-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--brand-primary), var(--brand-primary-light));
}

.tutorial-level-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: rgba(212, 168, 67, 0.1);
    border: 1px solid rgba(212, 168, 67, 0.25);
    border-radius: 100px;
    color: var(--brand-primary);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.tutorial-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.tutorial-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
    line-height: 1.7;
}

.tutorial-goal {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(34, 197, 94, 0.08);
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--state-running);
    font-weight: 500;
}

.tutorial-progress {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.tutorial-progress-dot {
    width: 32px;
    height: 4px;
    border-radius: 2px;
    background: var(--bg-darkest);
    transition: all var(--transition-normal);
}

.tutorial-progress-dot.completed {
    background: var(--state-running);
}

.tutorial-progress-dot.active {
    background: var(--brand-primary);
    box-shadow: 0 0 8px rgba(212, 168, 67, 0.3);
}

/* ============================================================
   ACHIEVEMENT TOASTS
   ============================================================ */
.achievement-toast-container {
    position: fixed;
    top: 80px;
    right: var(--space-lg);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.achievement-toast {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid rgba(212, 168, 67, 0.3);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 20px rgba(212, 168, 67, 0.15);
    animation: slideInRight 0.4s ease-out, fadeOutRight 0.4s ease-in 4.6s forwards;
    min-width: 280px;
}

.achievement-toast-icon {
    font-size: 1.5rem;
}

.achievement-toast-content {
    flex: 1;
}

.achievement-toast-label {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--brand-primary);
    font-weight: 700;
    margin-bottom: 2px;
}

.achievement-toast-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ============================================================
   SCROLLBAR CUSTOMIZATION
   ============================================================ */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darkest);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .mode-grid {
        grid-template-columns: 1fr;
    }

    .challenge-split {
        grid-template-columns: 1fr;
    }

    .charts-grid {
        grid-template-columns: 1fr;
    }

    .chain-flow {
        gap: var(--space-xs);
    }

    .station {
        min-width: 80px;
        padding: var(--space-sm);
    }

    .station-capacity {
        font-size: 1.4rem;
    }

    .dashboard {
        gap: var(--space-sm);
    }

    .metric-card {
        min-width: 90px;
        padding: var(--space-sm);
    }

    .metric-card .metric-value {
        font-size: 1.1rem;
    }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeIn 0.5s ease-out forwards;
}

.animate-in-delay-1 {
    animation-delay: 0.1s;
    opacity: 0;
}

.animate-in-delay-2 {
    animation-delay: 0.2s;
    opacity: 0;
}

.animate-in-delay-3 {
    animation-delay: 0.3s;
    opacity: 0;
}

.animate-in-delay-4 {
    animation-delay: 0.4s;
    opacity: 0;
}

/* Gear spinning animation for running stations */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.gear-icon {
    display: inline-block;
    animation: spin 2s linear infinite;
}

.station.state-starved .gear-icon {
    animation-duration: 5s;
}

.station.state-blocked .gear-icon {
    animation: spin 3s steps(8) infinite;
}

.station.state-down .gear-icon,
.station.state-idle .gear-icon {
    animation: none;
}

/* Number counter animation */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.count-update {
    animation: countUp 0.3s ease-out;
}

/* ============================================================
   SANDBOX MODE — LAYOUT
   ============================================================ */
.sandbox-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--space-lg);
    padding: var(--space-lg);
    min-height: calc(100vh - 60px);
}

/* CONFIG PANEL (sidebar) */
.config-panel {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    height: fit-content;
    position: sticky;
    top: calc(60px + var(--space-lg));
    max-height: calc(100vh - 80px);
    overflow-y: auto;
}

.config-panel h2 {
    font-size: 1.1rem;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.config-section {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.config-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.config-section h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
    font-weight: 600;
}

.config-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xs);
}

.config-row label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.config-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--brand-primary);
}

/* Custom range slider */
.config-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    outline: none;
    margin: var(--space-xs) 0;
    cursor: pointer;
}

.config-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--brand-primary);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--bg-darkest);
    box-shadow: 0 0 6px var(--brand-glow);
    transition: transform var(--transition-fast);
}

.config-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.config-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--brand-primary);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--bg-darkest);
    box-shadow: 0 0 6px var(--brand-glow);
}

/* Station config items */
.station-config-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.station-config-item.constraint-locked {
    border-color: rgba(245, 158, 11, 0.3);
    background: rgba(245, 158, 11, 0.05);
}

.station-config-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

/* Config checkbox */
.config-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.config-checkbox input[type="checkbox"] {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
    flex-shrink: 0;
    position: relative;
}

.config-checkbox input[type="checkbox"]:checked {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
}

.config-checkbox input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--bg-darkest);
    font-size: 0.7rem;
    font-weight: 900;
}

.config-checkbox label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
}

/* Sandbox sim area */
.sandbox-sim-area {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* ============================================================
   BUFFER VISUALIZATION
   ============================================================ */
.buffer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.buffer-tank {
    width: 40px;
    height: 80px;
    background: rgba(255, 255, 255, 0.04);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
}

.buffer-fill {
    width: 100%;
    transition: height 0.3s ease, background-color 0.3s ease;
    border-radius: 0 0 2px 2px;
}

.buffer-fill.zone-green {
    background: linear-gradient(to top, #10b981, #34d399);
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.3);
}

.buffer-fill.zone-yellow {
    background: linear-gradient(to top, #f59e0b, #fbbf24);
    box-shadow: 0 0 8px rgba(245, 158, 11, 0.3);
}

.buffer-fill.zone-red {
    background: linear-gradient(to top, #ef4444, #f87171);
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.3);
}

.buffer-level-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.buffer-label {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    white-space: nowrap;
    font-weight: 600;
}

/* Chain output box */
.chain-output-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
    background: var(--bg-surface);
    border: 2px solid var(--brand-primary);
    border-radius: var(--radius-sm);
    padding: var(--space-sm) var(--space-md);
    box-shadow: 0 0 12px var(--brand-glow);
}

.chain-output-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 600;
}

.chain-output-value {
    font-size: 1.5rem;
    font-weight: 900;
    font-family: 'JetBrains Mono', monospace;
    color: var(--brand-primary);
}

/* Daily Data Table */
.data-table-container {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    margin-top: var(--space-lg);
    width: 100%;
}

.data-table-header {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.data-table-header h3 {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 600;
}

.data-table-scroll {
    height: 600px;
    overflow-y: auto;
}

.sim-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.75rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    table-layout: fixed;
}

.sim-table thead {
    position: sticky;
    top: 0;
    z-index: 1;
}

.sim-table th {
    background: var(--bg-surface);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    padding: 5px 4px;
    text-align: center;
    border-bottom: 2px solid rgba(255, 255, 255, 0.08);
    white-space: nowrap;
}

.sim-table td {
    padding: 3px 4px;
    text-align: center;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    font-size: 0.7rem;
}

.sim-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

.sim-table tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.015);
}

.sim-table td.buf-green {
    color: #10b981;
    font-weight: 600;
}

.sim-table td.buf-red {
    color: #ef4444;
    font-weight: 600;
}

/* ============================================================
   RESPONSIVE — SANDBOX
   ============================================================ */
@media (max-width: 900px) {
    .sandbox-layout {
        grid-template-columns: 1fr;
    }

    .config-panel {
        position: static;
        max-height: none;
    }
}