/* =========================================================================
   ALEPH // EPISTEME MASTER DESIGN SYSTEM v5.0
   Multi-Theme Luxury Architecture & Bespoke Typography Engine
   Archetypes:
     1. Obsidian Champagne Pro (👑 Royalty, Gold, Editorial Serif)
     2. Swiss Titanium Monolith (⚡ Dieter Rams, Linear Minimal, Grotesque)
     3. Quantum Emerald & Slate (🧬 Deep Bio-Frontier, Space Grotesk)
     4. Cyber Obsidian Classic  (🌌 Deep Academic Cyan/Amber, Geist)
     5. Editorial Daylight      (☀️ Pure Ivory Paper, High Contrast Ink)
   ========================================================================= */

:root {
    /* Baseline Default / Cyber Obsidian */
    --canvas: #07090e;
    --surface: #111319;
    --surface-container-lowest: #0c0e13;
    --surface-container-low: #191c21;
    --surface-container: #1d2025;
    --surface-container-high: #282a30;
    --surface-container-highest: #33353b;
    --surface-glass: rgba(15, 23, 42, 0.82);
    --seam-border: rgba(56, 189, 248, 0.16);
    --seam-border-subtle: rgba(148, 163, 184, 0.10);
    --seam-border-glow: rgba(56, 189, 248, 0.40);

    --primary: #4cd7f6;
    --primary-container: #06b6d4;
    --secondary: #4edea3;
    --secondary-container: #10b981;
    --tertiary: #ffb95f;
    --tertiary-container: #f59e0b;

    --text-primary: #f8fafc;
    --text-surface: #e2e2ea;
    --text-muted: #869397;
    --text-dim: #5c686c;
    --on-surface: #f8fafc;
    --on-surface-muted: #94a3b8;

    --font-display: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --tracking-display: -0.02em;
    --tracking-body: 0;
    --tracking-badge: 0.04em;
    --line-height-display: 1.25;
    --line-height-prose: 1.64;
    --font-weight-display: 600;
    --font-weight-body: 400;

    --glow-cyan: rgba(6, 182, 212, 0.35);
    --glow-emerald: rgba(16, 185, 129, 0.35);
    --glow-amber: rgba(245, 158, 11, 0.35);
    --glow-accent: rgba(6, 182, 212, 0.35);

    --card-micro-bevel: inset 0 1px 0 0 rgba(56, 189, 248, 0.12), 0 4px 24px -1px rgba(0, 0, 0, 0.50);
    --card-shadow: 0 4px 24px -1px rgba(0, 0, 0, 0.50);
    --bg-radial-glow: radial-gradient(ellipse at 50% 0%, rgba(6, 182, 212, 0.04) 0%, transparent 60%);

    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --font-scale: 1;
}

/* =========================================================================
   1. OBSIDIAN CHAMPAGNE PRO (👑 Royalty, Imperial Gold, Editorial Serif)
   ========================================================================= */
:root[data-theme="obsidian-champagne"],
html[data-theme="obsidian-champagne"],
body[data-theme="obsidian-champagne"] {
    --canvas: #07080b;
    --surface: #0f1117;
    --surface-container-lowest: #0a0b0e;
    --surface-container-low: #141720;
    --surface-container: #1a1e29;
    --surface-container-high: #242938;
    --surface-container-highest: #2f3547;
    --surface-glass: rgba(15, 17, 23, 0.88);
    --seam-border: rgba(245, 158, 11, 0.22);
    --seam-border-subtle: rgba(217, 119, 6, 0.12);
    --seam-border-glow: rgba(251, 191, 36, 0.42);

    --primary: #fbbf24;
    --primary-container: #d97706;
    --secondary: #34d399;
    --secondary-container: #059669;
    --tertiary: #fcd34d;
    --tertiary-container: #b45309;

    --text-primary: #fffdf7;
    --text-surface: #f6eedb;
    --text-muted: #bfae95;
    --text-dim: #7c6f5d;
    --on-surface: #fffdf7;
    --on-surface-muted: #bfae95;

    --font-display: 'Newsreader', 'Geist', Georgia, serif;
    --font-body: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --tracking-display: -0.014em;
    --tracking-body: 0.005em;
    --tracking-badge: 0.06em;
    --line-height-display: 1.28;
    --line-height-prose: 1.74;
    --font-weight-display: 600;
    --font-weight-body: 400;

    --glow-cyan: rgba(251, 191, 36, 0.35);
    --glow-emerald: rgba(52, 211, 153, 0.30);
    --glow-amber: rgba(245, 158, 11, 0.40);
    --glow-accent: rgba(251, 191, 36, 0.38);

    --card-micro-bevel: inset 0 1px 0 0 rgba(251, 191, 36, 0.22), 0 8px 32px -4px rgba(0, 0, 0, 0.80);
    --card-shadow: 0 4px 24px -1px rgba(0, 0, 0, 0.70);
    --bg-radial-glow: radial-gradient(ellipse at 50% 0%, rgba(245, 158, 11, 0.06) 0%, transparent 60%);
}

/* =========================================================================
   2. SWISS TITANIUM MONOLITH (⚡ Dieter Rams / Linear Minimalist Monochrome)
   ========================================================================= */
:root[data-theme="swiss-titanium"],
html[data-theme="swiss-titanium"],
body[data-theme="swiss-titanium"] {
    --canvas: #08090c;
    --surface: #0f1015;
    --surface-container-lowest: #0a0b0e;
    --surface-container-low: #14161e;
    --surface-container: #1b1e28;
    --surface-container-high: #242836;
    --surface-container-highest: #2e3344;
    --surface-glass: rgba(15, 16, 21, 0.90);
    --seam-border: rgba(255, 255, 255, 0.12);
    --seam-border-subtle: rgba(255, 255, 255, 0.06);
    --seam-border-glow: rgba(56, 189, 248, 0.45);

    --primary: #ffffff;
    --primary-container: #38bdf8;
    --secondary: #38bdf8;
    --secondary-container: #0284c7;
    --tertiary: #94a3b8;
    --tertiary-container: #64748b;

    --text-primary: #ffffff;
    --text-surface: #e2e8f0;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --on-surface: #ffffff;
    --on-surface-muted: #94a3b8;

    --font-display: 'Inter', 'Geist', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --tracking-display: -0.038em;
    --tracking-body: -0.012em;
    --tracking-badge: 0.08em;
    --line-height-display: 1.18;
    --line-height-prose: 1.58;
    --font-weight-display: 700;
    --font-weight-body: 400;

    --glow-cyan: rgba(56, 189, 248, 0.35);
    --glow-emerald: rgba(52, 211, 153, 0.25);
    --glow-amber: rgba(245, 158, 11, 0.30);
    --glow-accent: rgba(56, 189, 248, 0.40);

    --card-micro-bevel: inset 0 1px 0 0 rgba(255, 255, 255, 0.18), 0 8px 24px rgba(0, 0, 0, 0.70);
    --card-shadow: 0 4px 20px -1px rgba(0, 0, 0, 0.60);
    --bg-radial-glow: radial-gradient(ellipse at 50% 0%, rgba(255, 255, 255, 0.04) 0%, transparent 55%);
}

/* =========================================================================
   3. QUANTUM EMERALD & SLATE (🧬 Deep Bio-Frontier, Space Grotesk)
   ========================================================================= */
:root[data-theme="quantum-emerald"],
html[data-theme="quantum-emerald"],
body[data-theme="quantum-emerald"] {
    --canvas: #050c0a;
    --surface: #0c1714;
    --surface-container-lowest: #07100e;
    --surface-container-low: #101f1c;
    --surface-container: #162925;
    --surface-container-high: #1d3631;
    --surface-container-highest: #26453f;
    --surface-glass: rgba(12, 23, 20, 0.88);
    --seam-border: rgba(16, 185, 129, 0.22);
    --seam-border-subtle: rgba(16, 185, 129, 0.10);
    --seam-border-glow: rgba(52, 211, 153, 0.45);

    --primary: #10b981;
    --primary-container: #059669;
    --secondary: #34d399;
    --secondary-container: #047857;
    --tertiary: #2dd4bf;
    --tertiary-container: #0f766e;

    --text-primary: #f0fdf4;
    --text-surface: #dcfce7;
    --text-muted: #86a89c;
    --text-dim: #4e6b61;
    --on-surface: #f0fdf4;
    --on-surface-muted: #86a89c;

    --font-display: 'Space Grotesk', 'Geist', -apple-system, sans-serif;
    --font-body: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --tracking-display: -0.024em;
    --tracking-body: -0.005em;
    --tracking-badge: 0.06em;
    --line-height-display: 1.24;
    --line-height-prose: 1.64;
    --font-weight-display: 700;
    --font-weight-body: 400;

    --glow-cyan: rgba(45, 212, 191, 0.35);
    --glow-emerald: rgba(16, 185, 129, 0.40);
    --glow-amber: rgba(245, 158, 11, 0.30);
    --glow-accent: rgba(16, 185, 129, 0.38);

    --card-micro-bevel: inset 0 1px 0 0 rgba(52, 211, 153, 0.20), 0 8px 30px rgba(0, 0, 0, 0.75);
    --card-shadow: 0 4px 24px -1px rgba(0, 0, 0, 0.65);
    --bg-radial-glow: radial-gradient(ellipse at 50% 0%, rgba(16, 185, 129, 0.07) 0%, transparent 60%);
}

/* =========================================================================
   4. CYBER OBSIDIAN (🌌 Default Cyber-Academic Geist & Obsidian Void)
   ========================================================================= */
:root[data-theme="dark"],
html[data-theme="dark"],
body[data-theme="dark"] {
    --canvas: #07090e;
    --surface: #111319;
    --surface-container-lowest: #0c0e13;
    --surface-container-low: #191c21;
    --surface-container: #1d2025;
    --surface-container-high: #282a30;
    --surface-container-highest: #33353b;
    --surface-glass: rgba(15, 23, 42, 0.78);
    --seam-border: rgba(56, 189, 248, 0.16);
    --seam-border-subtle: rgba(148, 163, 184, 0.10);
    --seam-border-glow: rgba(56, 189, 248, 0.40);

    --primary: #4cd7f6;
    --primary-container: #06b6d4;
    --secondary: #4edea3;
    --secondary-container: #10b981;
    --tertiary: #ffb95f;
    --tertiary-container: #f59e0b;

    --text-primary: #f8fafc;
    --text-surface: #e2e2ea;
    --text-muted: #869397;
    --text-dim: #5c686c;
    --on-surface: #f8fafc;
    --on-surface-muted: #94a3b8;

    --font-display: 'Geist', -apple-system, sans-serif;
    --font-body: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --tracking-display: -0.02em;
    --tracking-body: 0;
    --tracking-badge: 0.04em;
    --line-height-display: 1.25;
    --line-height-prose: 1.62;
    --font-weight-display: 600;
    --font-weight-body: 400;

    --glow-cyan: rgba(6, 182, 212, 0.35);
    --glow-emerald: rgba(16, 185, 129, 0.35);
    --glow-amber: rgba(245, 158, 11, 0.35);
    --glow-accent: rgba(6, 182, 212, 0.35);

    --card-micro-bevel: inset 0 1px 0 0 rgba(56, 189, 248, 0.12), 0 4px 24px -1px rgba(0, 0, 0, 0.45);
    --card-shadow: 0 4px 24px -1px rgba(0, 0, 0, 0.45);
    --bg-radial-glow: radial-gradient(ellipse at 50% 0%, rgba(6, 182, 212, 0.04) 0%, transparent 60%);
}

/* =========================================================================
   5. EDITORIAL DAYLIGHT (☀️ Pure Ivory Paper, High Contrast Ink)
   ========================================================================= */
:root[data-theme="light"],
html[data-theme="light"],
body[data-theme="light"] {
    --canvas: #f8fafc;
    --surface: #ffffff;
    --surface-container-lowest: #f1f5f9;
    --surface-container-low: #f8fafc;
    --surface-container: #ffffff;
    --surface-container-high: #e2e8f0;
    --surface-container-highest: #cbd5e1;
    --surface-glass: rgba(255, 255, 255, 0.96);
    --seam-border: rgba(14, 116, 144, 0.28);
    --seam-border-subtle: rgba(71, 85, 105, 0.22);
    --seam-border-glow: rgba(2, 132, 199, 0.45);

    --primary: #0369a1;
    --primary-container: #0284c7;
    --secondary: #047857;
    --secondary-container: #059669;
    --tertiary: #b45309;
    --tertiary-container: #d97706;

    --text-primary: #000000;
    --text-surface: #000000;
    --text-muted: #111827;
    --text-dim: #1e293b;
    --on-surface: #000000;
    --on-surface-muted: #111827;

    --font-display: 'Newsreader', 'Geist', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --tracking-display: -0.015em;
    --tracking-body: 0;
    --tracking-badge: 0.05em;
    --line-height-display: 1.26;
    --line-height-prose: 1.68;
    --font-weight-display: 700;
    --font-weight-body: 400;

    --glow-cyan: rgba(2, 132, 199, 0.22);
    --glow-emerald: rgba(5, 150, 105, 0.22);
    --glow-amber: rgba(217, 119, 6, 0.22);
    --glow-accent: rgba(2, 132, 199, 0.25);

    --card-micro-bevel: inset 0 1px 0 0 rgba(255, 255, 255, 0.8), 0 4px 18px rgba(0, 0, 0, 0.06);
    --card-shadow: 0 4px 18px rgba(0, 0, 0, 0.06);
    --bg-radial-glow: radial-gradient(ellipse at 50% 0%, rgba(2, 132, 199, 0.05) 0%, transparent 60%);
}

/* =========================================================================
   GLOBAL RESET & TYPOGRAPHIC BASE
   ========================================================================= */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--canvas);
    color: var(--text-surface);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
    font-variant-numeric: tabular-nums;
    background-image: 
        var(--bg-radial-glow),
        linear-gradient(rgba(148, 163, 184, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.02) 1px, transparent 1px);
    background-size: 100% 100%, 32px 32px, 32px 32px;
}

[data-theme="light"] body,
body[data-theme="light"] {
    background-color: var(--canvas);
    color: #000000;
    background-image: 
        var(--bg-radial-glow),
        linear-gradient(rgba(100, 116, 139, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(100, 116, 139, 0.05) 1px, transparent 1px);
}

h1, h2, h3, h4, .font-geist {
    font-family: var(--font-display);
    letter-spacing: var(--tracking-display);
    line-height: var(--line-height-display);
}

/* Glassmorphism card */
.glass-panel {
    background: var(--surface-glass);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--seam-border);
    border-radius: var(--radius-md);
    box-shadow: var(--card-micro-bevel);
}