/* ============================================================
   PORTFOLIO DESIGN SYSTEM — CSS VARIABLES (TOKEN SHEET)
   Adedotun Gabriel Portfolio · v1.0 · 2026
   ============================================================ */

/* ── RAW PALETTE TOKENS ────────────────────────────────── */
:root {
  /* Mahogany Red */
  --color-mahogany-red-50: #fce9e9;
  --color-mahogany-red-100: #f8d4d3;
  --color-mahogany-red-200: #f1a8a7;
  --color-mahogany-red-300: #ea7d7b;
  --color-mahogany-red-400: #e3514f;
  --color-mahogany-red-500: #dd2622;
  --color-mahogany-red-600: #b01e1c;
  --color-mahogany-red-700: #841715;
  --color-mahogany-red-800: #580f0e;
  --color-mahogany-red-900: #2c0807;
  --color-mahogany-red-950: #1f0505;

  /* Ink Black */
  --color-ink-black-50: #edf3f8;
  --color-ink-black-100: #dbe7f0;
  --color-ink-black-200: #b6cee2;
  --color-ink-black-300: #92b6d3;
  --color-ink-black-400: #6d9dc5;
  --color-ink-black-500: #4985b6;
  --color-ink-black-600: #3a6a92;
  --color-ink-black-700: #2c506d;
  --color-ink-black-800: #1d3549;
  --color-ink-black-900: #0f1b24;
  --color-ink-black-950: #0a131a;

  /* Medium Slate Blue */
  --color-medium-slate-blue-50: #ececf9;
  --color-medium-slate-blue-100: #d8d9f3;
  --color-medium-slate-blue-200: #b1b3e7;
  --color-medium-slate-blue-300: #8b8dda;
  --color-medium-slate-blue-400: #6467ce;
  --color-medium-slate-blue-500: #3d42c2;
  --color-medium-slate-blue-600: #31349b;
  --color-medium-slate-blue-700: #252774;
  --color-medium-slate-blue-800: #181a4e;
  --color-medium-slate-blue-900: #0c0d27;
  --color-medium-slate-blue-950: #09091b;

  /* Ghost White */
  --color-ghost-white-50: #efeff6;
  --color-ghost-white-100: #dedeed;
  --color-ghost-white-200: #bdbddb;
  --color-ghost-white-300: #9c9cc9;
  --color-ghost-white-400: #7b7bb7;
  --color-ghost-white-500: #5b5ba4;
  --color-ghost-white-600: #484884;
  --color-ghost-white-700: #363663;
  --color-ghost-white-800: #242442;
  --color-ghost-white-900: #121221;
  --color-ghost-white-950: #0d0d17;

  /* Steel Blue */
  --color-steel-blue-50: #eef3f7;
  --color-steel-blue-100: #dce6ef;
  --color-steel-blue-200: #b9cddf;
  --color-steel-blue-300: #96b4cf;
  --color-steel-blue-400: #739cbf;
  --color-steel-blue-500: #5083af;
  --color-steel-blue-600: #40698c;
  --color-steel-blue-700: #304e69;
  --color-steel-blue-800: #203446;
  --color-steel-blue-900: #101a23;
  --color-steel-blue-950: #0b1218;

  /* Bright Ocean */
  --color-bright-ocean-50: #e8f2fc;
  --color-bright-ocean-100: #d2e5f9;
  --color-bright-ocean-200: #a5ccf3;
  --color-bright-ocean-300: #78b2ed;
  --color-bright-ocean-400: #4a99e8;
  --color-bright-ocean-500: #1d7fe2;
  --color-bright-ocean-600: #1766b5;
  --color-bright-ocean-700: #124c87;
  --color-bright-ocean-800: #0c335a;
  --color-bright-ocean-900: #06192d;
  --color-bright-ocean-950: #041220;

  /* Coral Glow */
  --color-coral-glow-50: #feeee6;
  --color-coral-glow-100: #feddcd;
  --color-coral-glow-200: #fcba9c;
  --color-coral-glow-300: #fb986a;
  --color-coral-glow-400: #fa7538;
  --color-coral-glow-500: #f95306;
  --color-coral-glow-600: #c74205;
  --color-coral-glow-700: #953204;
  --color-coral-glow-800: #632103;
  --color-coral-glow-900: #321101;
  --color-coral-glow-950: #230c01;

  /* Ocean Mist */
  --color-ocean-mist-50: #e8fcf9;
  --color-ocean-mist-100: #d1faf3;
  --color-ocean-mist-200: #a4f4e7;
  --color-ocean-mist-300: #76efdb;
  --color-ocean-mist-400: #48eacf;
  --color-ocean-mist-500: #1be4c3;
  --color-ocean-mist-600: #15b79c;
  --color-ocean-mist-700: #108975;
  --color-ocean-mist-800: #0b5b4e;
  --color-ocean-mist-900: #052e27;
  --color-ocean-mist-950: #04201b;

  /* Parchment */
  --color-parchment-50: #f6f3ef;
  --color-parchment-100: #ece8df;
  --color-parchment-200: #d9d0bf;
  --color-parchment-300: #c6b99f;
  --color-parchment-400: #b4a27e;
  --color-parchment-500: #a18b5e;
  --color-parchment-600: #816f4b;
  --color-parchment-700: #605339;
  --color-parchment-800: #403726;
  --color-parchment-900: #201c13;
  --color-parchment-950: #16130d;

  /* Carbon Black */
  --color-carbon-black-50: #f2f2f3;
  --color-carbon-black-100: #e5e6e6;
  --color-carbon-black-200: #caccce;
  --color-carbon-black-300: #b0b3b5;
  --color-carbon-black-400: #96999c;
  --color-carbon-black-500: #7c8083;
  --color-carbon-black-600: #636669;
  --color-carbon-black-700: #4a4d4f;
  --color-carbon-black-800: #313335;
  --color-carbon-black-900: #191a1a;
  --color-carbon-black-950: #111212;

  /* ── SEMANTIC TOKENS (LIGHT THEME DEFAULT) ─────────────── */
  --color-background: var(--color-steel-blue-50);
  --color-surface: #ffffff;
  --color-surface-raised: var(--color-ghost-white-50);
  --color-surface-glass: rgba(255,255,255,0.72);
  --color-surface-code: var(--color-ink-black-900);
  --color-surface-tinted: var(--color-bright-ocean-50);

  --color-border: var(--color-steel-blue-100);
  --color-border-strong: var(--color-steel-blue-200);
  --color-border-focus: var(--color-bright-ocean-500);

  --color-text-primary: var(--color-ink-black-900);
  --color-text-secondary: var(--color-steel-blue-700);
  --color-text-muted: var(--color-carbon-black-500);
  --color-text-on-dark: var(--color-steel-blue-50);
  --color-text-code: var(--color-ocean-mist-300);

  --color-primary: var(--color-bright-ocean-600);
  --color-primary-hover: var(--color-bright-ocean-700);
  --color-primary-light: var(--color-bright-ocean-50);

  --color-accent: var(--color-medium-slate-blue-600);
  --color-accent-light: var(--color-medium-slate-blue-50);

  --color-success: var(--color-ocean-mist-700);
  --color-success-light: var(--color-ocean-mist-50);
  --color-warning: var(--color-parchment-600);
  --color-warning-light: var(--color-parchment-50);
  --color-danger: var(--color-mahogany-red-600);
  --color-danger-light: var(--color-mahogany-red-50);
  --color-highlight: var(--color-coral-glow-600);
  --color-highlight-light: var(--color-coral-glow-50);

  --color-focus: var(--color-bright-ocean-500);

  /* ── SHADOWS ───────────────────────────────────────────── */
  --shadow-soft: 0 1px 3px rgba(16,26,35,0.06), 0 4px 12px rgba(16,26,35,0.05);
  --shadow-slightly-elevated: 0 2px 8px rgba(16,26,35,0.08), 0 8px 24px rgba(16,26,35,0.07);
  --shadow-elevated: 0 4px 16px rgba(16,26,35,0.10), 0 16px 40px rgba(16,26,35,0.09);
  --shadow-float: 0 8px 32px rgba(16,26,35,0.14), 0 2px 8px rgba(16,26,35,0.08);
  --shadow-focus: 0 0 0 3px rgba(29,127,226,0.28);

  /* ── TYPOGRAPHY ─────────────────────────────────────────── */
  --font-display: 'Bebas Neue', sans-serif;
  --font-body: 'Rajdhani', sans-serif;
  --font-mono: 'Orbitron', monospace;
  --font-code: 'Courier New', 'Consolas', monospace;

  /* ── TYPE SCALE ─────────────────────────────────────────── */
  --text-xs: 11px;
  --text-sm: 13px;
  --text-base: 15px;
  --text-md: 17px;
  --text-lg: 20px;
  --text-xl: 24px;
  --text-2xl: 32px;
  --text-3xl: 48px;
  --text-4xl: 64px;
  --text-hero: clamp(56px, 10vw, 120px);

  /* ── SPACING SCALE ──────────────────────────────────────── */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  /* ── LAYOUT ─────────────────────────────────────────────── */
  --container-max: 1200px;
  --grid-gap: 24px;
  --grid-col-min: 320px;
  --content-max: 720px;

  /* ── BORDER RADIUS ──────────────────────────────────────── */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 999px;

  /* ── TRANSITIONS ────────────────────────────────────────── */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.45s ease;

  /* ── GLASS ──────────────────────────────────────────────── */
  --glass-blur: blur(16px);
  --glass-border: 1px solid rgba(255,255,255,0.6);
  --glass-bg: rgba(255,255,255,0.72);
}

/* ── DARK THEME SEMANTIC OVERRIDES ─────────────────────── */
[data-theme="dark"] {
  --color-background: var(--color-ink-black-950);
  --color-surface: var(--color-ink-black-900);
  --color-surface-raised: var(--color-ink-black-800);
  --color-surface-glass: rgba(15,27,36,0.72);
  --color-surface-code: var(--color-ink-black-950);
  --color-surface-tinted: var(--color-bright-ocean-950);

  --color-border: var(--color-ink-black-700);
  --color-border-strong: var(--color-ink-black-600);
  --color-border-focus: var(--color-bright-ocean-400);

  --color-text-primary: var(--color-ghost-white-50);
  --color-text-secondary: var(--color-steel-blue-200);
  --color-text-muted: var(--color-carbon-black-400);
  --color-text-on-dark: var(--color-ink-black-900);
  --color-text-code: var(--color-ocean-mist-300);

  --color-primary: var(--color-bright-ocean-400);
  --color-primary-hover: var(--color-bright-ocean-300);
  --color-primary-light: var(--color-bright-ocean-900);

  --color-accent: var(--color-medium-slate-blue-400);
  --color-accent-light: var(--color-medium-slate-blue-900);

  --color-success: var(--color-ocean-mist-400);
  --color-success-light: var(--color-ocean-mist-900);
  --color-warning: var(--color-parchment-400);
  --color-warning-light: var(--color-parchment-900);
  --color-danger: var(--color-mahogany-red-400);
  --color-danger-light: var(--color-mahogany-red-900);
  --color-highlight: var(--color-coral-glow-400);
  --color-highlight-light: var(--color-coral-glow-900);

  --color-focus: var(--color-bright-ocean-400);

  --shadow-soft: 0 1px 3px rgba(0,0,0,0.30), 0 4px 12px rgba(0,0,0,0.25);
  --shadow-slightly-elevated: 0 2px 8px rgba(0,0,0,0.35), 0 8px 24px rgba(0,0,0,0.30);
  --shadow-elevated: 0 4px 16px rgba(0,0,0,0.40), 0 16px 40px rgba(0,0,0,0.35);
  --shadow-float: 0 8px 32px rgba(0,0,0,0.50), 0 2px 8px rgba(0,0,0,0.35);
  --shadow-focus: 0 0 0 3px rgba(74,153,232,0.35);

  --glass-border: 1px solid rgba(255,255,255,0.08);
  --glass-bg: rgba(15,27,36,0.72);
}

/* ── BASE STYLES ───────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  background: var(--color-background);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle dot-grid texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(48,78,105,0.09) 1px, transparent 1px);
  background-size: 28px 28px;
  z-index: 0;
  pointer-events: none;
}

[data-theme="dark"] body::before {
  background-image: radial-gradient(circle, rgba(255,255,255,0.04) 1px, transparent 1px);
}

/* Selection */
::selection {
  background: var(--color-primary);
  color: #fff;
}

/* Focus visible global */
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-background);
}
::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: var(--radius-pill);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  z-index: 9999;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 20px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: 20px;
}

/* Container */
.container {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* Section spacing */
.section {
  padding: var(--space-3xl) 0;
}
.section-header {
  margin-bottom: var(--space-xl);
}
.section-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 4px;
  color: var(--color-primary);
  text-transform: uppercase;
  opacity: 0.8;
  margin-bottom: var(--space-sm);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 60px);
  letter-spacing: 2px;
  color: var(--color-text-primary);
  line-height: 1;
  margin-bottom: var(--space-md);
}
.section-title .accent {
  color: var(--color-primary);
}
.section-desc {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  max-width: 620px;
  line-height: 1.75;
  font-weight: 400;
}

/* Divider */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  margin: var(--space-xl) 0;
}

/* Table wrap */
.table-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

/* Visually hidden (accessibility) */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}