:root {
    --bg-primary: #f6f5f0;
    --bg-secondary: #eceae2;
    --bg-card: #ffffff;
    --bg-pill: #efede6;
    --text-primary: #2b2d33;
    --text-secondary: #5a5e6b;
    --text-muted: #858996;
    --border-color: #e2dfd5;
    --accent-primary: #5b82c4;
    --accent-secondary: #48997a;
    --accent-warm: #c9834b;
    --pastel-blue-bg: rgba(91, 130, 196, 0.10);
    --pastel-green-bg: rgba(72, 153, 122, 0.10);
    --pastel-amber-bg: rgba(201, 131, 75, 0.10);
    --thm-bg: #f3f1ea;
    --thm-border: #5b82c4;
    --card-shadow: 0 6px 24px -6px rgba(35, 38, 45, 0.06);
}

html.dark {
    --bg-primary: #1e2028;
    --bg-secondary: #252832;
    --bg-card: #272a35;
    --bg-pill: #2f3340;
    --text-primary: #eef0f5;
    --text-secondary: #b0b6c6;
    --text-muted: #7e8596;
    --border-color: #363b49;
    --accent-primary: #93b8f8;
    --accent-secondary: #88cfa8;
    --accent-warm: #f2b880;
    --pastel-blue-bg: rgba(147, 184, 248, 0.11);
    --pastel-green-bg: rgba(136, 207, 168, 0.11);
    --pastel-amber-bg: rgba(242, 184, 128, 0.11);
    --thm-bg: #222530;
    --thm-border: #93b8f8;
    --card-shadow: 0 8px 28px -6px rgba(10, 12, 18, 0.28);
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    transition: background-color 0.25s ease, color 0.25s ease;
}

.surface-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 22px;
    box-shadow: var(--card-shadow);
    transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.surface-card-interactive:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 9999px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.icon-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent-primary);
    transform: translateY(-1px);
}

.pill-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 18px;
    border-radius: 9999px;
    background-color: var(--bg-pill);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.pill-btn:hover {
    border-color: var(--accent-primary);
    background-color: var(--pastel-blue-bg);
}

/* Academic Report Pages */
.academic-report {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.02rem;
    line-height: 1.78;
    color: var(--text-primary);
}

.academic-report h2 {
    font-weight: 700;
    font-size: 1.2rem;
    margin-top: 2.25rem;
    margin-bottom: 0.85rem;
    padding-bottom: 0.45rem;
    border-bottom: 1px solid var(--border-color);
}

.academic-report h3 {
    font-weight: 600;
    font-size: 1.04rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.academic-report p {
    margin-bottom: 1.1rem;
    color: var(--text-secondary);
}

.thm-box {
    background-color: var(--thm-bg);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--thm-border);
    padding: 1.2rem 1.45rem;
    margin: 1.35rem 0;
    border-radius: 16px;
    color: var(--text-primary);
}

.thm-title {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent-primary);
    display: block;
    margin-bottom: 0.4rem;
}

.math-block {
    overflow-x: auto;
    margin: 1.15rem 0;
    padding: 0.4rem 0;
}

.quant-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    margin: 1.25rem 0;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    overflow: hidden;
}

.quant-table th {
    background-color: var(--bg-secondary);
    padding: 0.65rem 0.85rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.quant-table td {
    padding: 0.6rem 0.85rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

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

.impl-details {
    margin: 1.25rem 0;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
}

.impl-details summary {
    cursor: pointer;
    padding: 0.75rem 1.15rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    background-color: var(--bg-secondary);
    display: flex;
    justify-content: space-between;
}

.impl-details pre {
    margin: 0 !important;
    font-size: 0.8rem !important;
}


/* ==========================================================================
   GAMECUBE CRAZY TAXI ARCADE MODE (SCOPED TO #crazy-taxi-view)
   Does not affect the main website at all
   ========================================================================== */

#crazy-taxi-view {
    font-family: 'Impact', 'Arial Black', 'Plus Jakarta Sans', sans-serif;
    user-select: none;
    background: #0d101c;
    color: #fff;
}

.ct-text-stroke {
    text-shadow:
        -2px -2px 0 #000,
         2px -2px 0 #000,
        -2px  2px 0 #000,
         2px  2px 0 #000,
         0px  4px 0 #000;
}

.ct-title-skew {
    transform: skewX(-12deg) rotate(-2deg);
    letter-spacing: 0.04em;
}

.ct-checker-bar {
    background-image:
        linear-gradient(45deg, #111 25%, transparent 25%),
        linear-gradient(-45deg, #111 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #111 75%),
        linear-gradient(-45deg, transparent 75%, #111 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0;
    background-color: #facc15;
}

.ct-hud-box {
    background: linear-gradient(180deg, rgba(20, 22, 34, 0.9) 0%, rgba(10, 12, 20, 0.94) 100%);
    border: 3px solid #facc15;
    box-shadow: 5px 5px 0 #000;
    transform: skewX(-8deg);
}

.ct-card-modal {
    background: linear-gradient(165deg, #1b1f33 0%, #101322 100%);
    border: 4px solid #facc15;
    box-shadow: 10px 10px 0 #000, 0 0 35px rgba(34, 197, 94, 0.45);
    transform: skewX(-3deg);
    font-family: 'Plus Jakarta Sans', sans-serif;
}

.ct-btn-arcade {
    font-family: 'Impact', 'Arial Black', sans-serif;
    letter-spacing: 0.05em;
    background: linear-gradient(180deg, #fde047 0%, #eab308 50%, #ca8a04 100%);
    color: #111;
    border: 3px solid #000;
    box-shadow: 4px 4px 0 #000;
    transform: skewX(-8deg);
    transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
    cursor: pointer;
}

.ct-btn-arcade:hover {
    filter: brightness(1.1);
    transform: skewX(-8deg) translate(-1px, -1px);
    box-shadow: 6px 6px 0 #000;
}

.ct-btn-arcade:active {
    transform: skewX(-8deg) translate(2px, 2px);
    box-shadow: 2px 2px 0 #000;
}

.ct-btn-green {
    background: linear-gradient(180deg, #4ade80 0%, #16a34a 100%);
    color: #fff;
    text-shadow: 1px 2px 0 #000;
}

.ct-gc-a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 999px;
    background: radial-gradient(circle at 30% 30%, #34d399, #059669);
    border: 2px solid #000;
    color: #fff;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 800;
    font-size: 0.75rem;
    box-shadow: 2px 2px 0 #000;
}

.ct-gc-b {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 999px;
    background: radial-gradient(circle at 30% 30%, #f87171, #dc2626);
    border: 2px solid #000;
    color: #fff;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 800;
    font-size: 0.75rem;
    box-shadow: 2px 2px 0 #000;
}