/* ============================================
   THEME DEFINITIONS
   6 themes (2 light + 4 dark) via CSS custom properties
   ============================================ */

/* Theme 0 (DEFAULT): Clean Light - Professional, recruiter-friendly */
[data-theme="light"] {
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f4f8;
  --bg-nav: rgba(255, 255, 255, 0.97);
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --accent: #2563eb;
  --accent-secondary: #7c3aed;
  --accent-glow: rgba(37, 99, 235, 0.12);
  --border: #e2e8f0;
  --border-hover: #2563eb;
  --tag-bg: rgba(37, 99, 235, 0.08);
  --tag-text: #2563eb;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.1);
  --font-primary: 'Inter', -apple-system, sans-serif;
  --font-heading: 'Fira Code', monospace;
  --card-radius: 10px;
  --btn-radius: 8px;
  --nav-indicator: #2563eb;
  --scrollbar-thumb: #cbd5e0;
  --scrollbar-track: #f8f9fa;
  --selection-bg: rgba(37, 99, 235, 0.2);
  --selection-text: #1a1a2e;
  --link: #2563eb;
  --link-hover: #1d4ed8;
  --winner-badge: #7c3aed;
  --pinned-border: #2563eb;
  --timeline-line: #e2e8f0;
  --timeline-dot: #2563eb;
  --stat-number: #2563eb;
}

/* Theme 0b: Warm Light - Soft warm tones */
[data-theme="warm"] {
  --bg-primary: #faf8f5;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #fdf6ee;
  --bg-nav: rgba(250, 248, 245, 0.97);
  --text-primary: #292524;
  --text-secondary: #57534e;
  --text-muted: #a8a29e;
  --accent: #d97706;
  --accent-secondary: #b45309;
  --accent-glow: rgba(217, 119, 6, 0.12);
  --border: #e7e5e4;
  --border-hover: #d97706;
  --tag-bg: rgba(217, 119, 6, 0.08);
  --tag-text: #b45309;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.08);
  --font-primary: 'Inter', -apple-system, sans-serif;
  --font-heading: 'Fira Code', monospace;
  --card-radius: 12px;
  --btn-radius: 8px;
  --nav-indicator: #d97706;
  --scrollbar-thumb: #d6d3d1;
  --scrollbar-track: #faf8f5;
  --selection-bg: rgba(217, 119, 6, 0.2);
  --selection-text: #292524;
  --link: #d97706;
  --link-hover: #b45309;
  --winner-badge: #d97706;
  --pinned-border: #d97706;
  --timeline-line: #e7e5e4;
  --timeline-dot: #d97706;
  --stat-number: #d97706;
}

/* Theme 1: Terminal - Green on black, hacker aesthetic */
[data-theme="terminal"] {
  --bg-primary: #0a0a0a;
  --bg-secondary: #0f0f0f;
  --bg-card: #111111;
  --bg-card-hover: #1a1a1a;
  --bg-nav: rgba(10, 10, 10, 0.95);
  --text-primary: #00ff41;
  --text-secondary: #00cc33;
  --text-muted: #338a3e;
  --accent: #00ff41;
  --accent-secondary: #00cc33;
  --accent-glow: rgba(0, 255, 65, 0.3);
  --border: #1a3a1a;
  --border-hover: #00ff41;
  --tag-bg: rgba(0, 255, 65, 0.1);
  --tag-text: #00ff41;
  --shadow: 0 4px 20px rgba(0, 255, 65, 0.08);
  --shadow-hover: 0 8px 30px rgba(0, 255, 65, 0.15);
  --font-primary: 'Fira Code', 'Courier New', monospace;
  --font-heading: 'Fira Code', 'Courier New', monospace;
  --card-radius: 2px;
  --btn-radius: 2px;
  --nav-indicator: #00ff41;
  --scrollbar-thumb: #00ff41;
  --scrollbar-track: #0a0a0a;
  --selection-bg: rgba(0, 255, 65, 0.3);
  --selection-text: #fff;
  --link: #00ff41;
  --link-hover: #66ff8c;
  --winner-badge: #00ff41;
  --pinned-border: #00ff41;
  --timeline-line: #1a3a1a;
  --timeline-dot: #00ff41;
  --stat-number: #00ff41;
}

/* Theme 2: Neon - Cyberpunk with cyan/purple gradients */
[data-theme="neon"] {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: rgba(22, 27, 34, 0.8);
  --bg-card-hover: rgba(30, 37, 48, 0.9);
  --bg-nav: rgba(13, 17, 23, 0.95);
  --text-primary: #e6edf3;
  --text-secondary: #b3bac3;
  --text-muted: #7d8590;
  --accent: #00d4ff;
  --accent-secondary: #bf5af2;
  --accent-glow: rgba(0, 212, 255, 0.25);
  --border: rgba(0, 212, 255, 0.15);
  --border-hover: rgba(0, 212, 255, 0.5);
  --tag-bg: rgba(0, 212, 255, 0.1);
  --tag-text: #00d4ff;
  --shadow: 0 4px 20px rgba(0, 212, 255, 0.08);
  --shadow-hover: 0 8px 30px rgba(0, 212, 255, 0.2);
  --font-primary: 'Inter', -apple-system, sans-serif;
  --font-heading: 'Fira Code', monospace;
  --card-radius: 12px;
  --btn-radius: 8px;
  --nav-indicator: #00d4ff;
  --scrollbar-thumb: #00d4ff;
  --scrollbar-track: #0d1117;
  --selection-bg: rgba(0, 212, 255, 0.3);
  --selection-text: #fff;
  --link: #00d4ff;
  --link-hover: #66e5ff;
  --winner-badge: #bf5af2;
  --pinned-border: #bf5af2;
  --timeline-line: rgba(0, 212, 255, 0.2);
  --timeline-dot: #00d4ff;
  --stat-number: #00d4ff;
}

/* Theme 3: Minimal - Clean dark with blue accents */
[data-theme="minimal"] {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-card: #1e2a4a;
  --bg-card-hover: #243356;
  --bg-nav: rgba(26, 26, 46, 0.97);
  --text-primary: #eaf0f6;
  --text-secondary: #a8b4c4;
  --text-muted: #6b7a8d;
  --accent: #4fc3f7;
  --accent-secondary: #81d4fa;
  --accent-glow: rgba(79, 195, 247, 0.15);
  --border: rgba(79, 195, 247, 0.12);
  --border-hover: rgba(79, 195, 247, 0.35);
  --tag-bg: rgba(79, 195, 247, 0.1);
  --tag-text: #4fc3f7;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 6px 24px rgba(0, 0, 0, 0.3);
  --font-primary: 'Inter', -apple-system, sans-serif;
  --font-heading: 'Inter', -apple-system, sans-serif;
  --card-radius: 8px;
  --btn-radius: 6px;
  --nav-indicator: #4fc3f7;
  --scrollbar-thumb: #4fc3f7;
  --scrollbar-track: #1a1a2e;
  --selection-bg: rgba(79, 195, 247, 0.3);
  --selection-text: #fff;
  --link: #4fc3f7;
  --link-hover: #81d4fa;
  --winner-badge: #4fc3f7;
  --pinned-border: #4fc3f7;
  --timeline-line: rgba(79, 195, 247, 0.15);
  --timeline-dot: #4fc3f7;
  --stat-number: #4fc3f7;
}

/* Theme 4: IDE - VS Code inspired */
[data-theme="ide"] {
  --bg-primary: #1e1e1e;
  --bg-secondary: #252526;
  --bg-card: #2d2d2d;
  --bg-card-hover: #333333;
  --bg-nav: rgba(37, 37, 38, 0.98);
  --text-primary: #d4d4d4;
  --text-secondary: #9cdcfe;
  --text-muted: #6a9955;
  --accent: #569cd6;
  --accent-secondary: #c586c0;
  --accent-glow: rgba(86, 156, 214, 0.15);
  --border: #3e3e42;
  --border-hover: #569cd6;
  --tag-bg: rgba(86, 156, 214, 0.12);
  --tag-text: #9cdcfe;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.4);
  --font-primary: 'Fira Code', 'Consolas', monospace;
  --font-heading: 'Fira Code', 'Consolas', monospace;
  --card-radius: 4px;
  --btn-radius: 3px;
  --nav-indicator: #569cd6;
  --scrollbar-thumb: #424242;
  --scrollbar-track: #1e1e1e;
  --selection-bg: rgba(86, 156, 214, 0.3);
  --selection-text: #fff;
  --link: #569cd6;
  --link-hover: #9cdcfe;
  --winner-badge: #dcdcaa;
  --pinned-border: #c586c0;
  --timeline-line: #3e3e42;
  --timeline-dot: #569cd6;
  --stat-number: #b5cea8;

  /* IDE-specific extras */
  --ide-keyword: #569cd6;
  --ide-string: #ce9178;
  --ide-comment: #6a9955;
  --ide-function: #dcdcaa;
  --ide-number: #b5cea8;
  --ide-type: #4ec9b0;
  --ide-variable: #9cdcfe;
  --ide-line-number: #858585;
  --ide-line-highlight: rgba(255, 255, 255, 0.04);
}

/* Glassmorphism effect for neon theme cards */
[data-theme="neon"] .card {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
}

/* Terminal scanline effect */
[data-theme="terminal"] body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.03) 0px,
    rgba(0, 0, 0, 0.03) 1px,
    transparent 1px,
    transparent 2px
  );
}

/* IDE line number gutter effect on cards */
[data-theme="ide"] .card {
  border-left: 3px solid var(--border);
  position: relative;
}
[data-theme="ide"] .card:hover {
  border-left-color: var(--accent);
}

/* Neon glow on hover for cards */
[data-theme="neon"] .card:hover {
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.15), 0 0 40px rgba(191, 90, 242, 0.08);
}

/* Light theme card elevation */
[data-theme="light"] .card,
[data-theme="warm"] .card {
  border: 1px solid var(--border);
}
[data-theme="light"] .card:hover,
[data-theme="warm"] .card:hover {
  box-shadow: var(--shadow-hover);
}

/* Light themes: override btn-primary text for contrast */
[data-theme="light"] .btn-primary,
[data-theme="warm"] .btn-primary {
  color: #ffffff;
}

/* Light themes: nav shadow instead of border */
[data-theme="light"] .navbar,
[data-theme="warm"] .navbar {
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}