/* ==========================================================================
   Project-Based Learning Tracker - Master Multi-Theme Engine & Redesigned Header
   Themes:
     1. Radial Neon (Flagship Cosmic Cybernetic)
     2. Sovereign Gold (Ultra-Luxurious 24K Gold & Velvet Obsidian)
     3. Royal Velvet (Imperial Amethyst & Orchid Twilight Silk)
     4. Emerald Royale (Noble Cartier Jade & Polished Gold Trim)
     5. Nordic Frost (Glacier Arctic Ice Cyan & Polar Teal)
     6. Obsidian Carbon (Stealth Minimalist Obsidian Dark Mode)
     7. Daylight Studio (Pristine Apple/Linear High-Contrast Light Mode)
   ========================================================================== */

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

/* ==========================================================================
   1. THEME: RADIAL NEON (Default Flagship)
   ========================================================================== */
:root,
html[data-theme="neon"] {
  --theme-name: "neon";
  --theme-accent: #38bdf8;
  --theme-accent-secondary: #818cf8;
  --theme-glow: rgba(56, 189, 248, 0.45);
  
  --bg-base: #04060a;
  --bg-surface: rgba(11, 17, 30, 0.78);
  --bg-surface-elevated: rgba(16, 24, 42, 0.92);
  --bg-card: rgba(13, 19, 35, 0.74);
  --bg-card-hover: rgba(22, 32, 58, 0.92);
  --bg-input: rgba(8, 12, 22, 0.92);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(56, 189, 248, 0.40);
  --border-glow-gold: rgba(245, 158, 11, 0.45);

  --neon-cyan: #38bdf8;
  --neon-indigo: #818cf8;
  --neon-emerald: #10b981;
  --neon-rose: #f43f5e;
  --neon-amber: #f59e0b;
  --neon-purple: #c084fc;

  --text-high: #f8fafc;
  --text-medium: #94a3b8;
  --text-low: #64748b;

  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --color-bg-app: var(--bg-base);
  --color-bg-card: var(--bg-card);
  --color-bg-card-hover: var(--bg-card-hover);
  --color-bg-subtle: var(--bg-surface);
  --color-border: var(--border-subtle);
  --color-border-subtle: rgba(255, 255, 255, 0.05);

  --color-text-main: var(--text-high);
  --color-text-muted: var(--text-medium);
  --color-text-light: var(--text-low);

  --color-primary: #38bdf8;
  --color-primary-hover: #7dd3fc;
  --color-primary-subtle: rgba(56, 189, 248, 0.15);

  --color-beginner: #34d399;
  --color-beginner-bg: rgba(16, 185, 129, 0.15);
  --color-intermediate: #fbbf24;
  --color-intermediate-bg: rgba(245, 158, 11, 0.15);
  --color-advanced: #fb7185;
  --color-advanced-bg: rgba(244, 63, 94, 0.15);

  --color-mustdo-gold: #fbbf24;
  --color-mustdo-bg: rgba(245, 158, 11, 0.14);
  --color-mustdo-border: rgba(245, 158, 11, 0.45);
  --color-mustdo-text: #fef08a;

  --header-bg: rgba(4, 6, 10, 0.88);
  --header-border: var(--border-subtle);

  --theme-logo-gradient: linear-gradient(135deg, rgba(56, 189, 248, 0.35), rgba(129, 140, 248, 0.3));
  --theme-title-gradient: linear-gradient(135deg, #ffffff 30%, #38bdf8 100%);
  --theme-btn-primary: linear-gradient(135deg, #38bdf8, #818cf8);
}

html[data-theme="neon"] body,
:root:not([data-theme]) body {
  background-color: #04060a !important;
  color: #f8fafc !important;
  font-family: var(--font-body) !important;
  background-image: 
    radial-gradient(circle at 12% 12%, rgba(56, 189, 248, 0.22) 0%, transparent 42%),
    radial-gradient(circle at 88% 15%, rgba(129, 140, 248, 0.22) 0%, transparent 45%),
    radial-gradient(circle at 50% 55%, rgba(16, 185, 129, 0.12) 0%, transparent 52%),
    radial-gradient(circle at 80% 85%, rgba(192, 132, 252, 0.15) 0%, transparent 48%),
    radial-gradient(circle at 18% 85%, rgba(245, 158, 11, 0.12) 0%, transparent 44%) !important;
  background-attachment: fixed !important;
}

html[data-theme="neon"] body::before,
:root:not([data-theme]) body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-size: 44px 44px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  pointer-events: none;
  z-index: 0;
}

/* ==========================================================================
   2. THEME: OXFORD WARM PAPER (Classic Library Parchment - Zero Eye Strain)
   ========================================================================== */
html[data-theme="sepia"],
html[data-theme="warm"] {
  --theme-name: "sepia";
  --theme-accent: #c25e36;
  --theme-accent-secondary: #b47834;
  --theme-glow: rgba(194, 94, 54, 0.35);

  --bg-base: #f7f3e8;
  --bg-surface: #fcfaf4;
  --bg-surface-elevated: #ffffff;
  --bg-card: #fdfbf7;
  --bg-card-hover: #ffffff;
  --bg-input: #ffffff;

  --border-subtle: #e5decb;
  --border-glow: #c25e36;
  --border-glow-gold: #b47834;

  --neon-cyan: #c25e36;
  --neon-indigo: #8c5b36;
  --neon-emerald: #437a54;
  --neon-rose: #b8433e;
  --neon-amber: #b47834;
  --neon-purple: #7d5a7d;

  --text-high: #24201a;
  --text-medium: #574f43;
  --text-low: #877c6c;

  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --color-bg-app: var(--bg-base);
  --color-bg-card: var(--bg-card);
  --color-bg-card-hover: var(--bg-card-hover);
  --color-bg-subtle: var(--bg-surface);
  --color-border: var(--border-subtle);
  --color-border-subtle: #ede6d8;

  --color-text-main: var(--text-high);
  --color-text-muted: var(--text-medium);
  --color-text-light: var(--text-low);

  --color-primary: #c25e36;
  --color-primary-hover: #a84b26;
  --color-primary-subtle: rgba(194, 94, 54, 0.12);

  --color-beginner: #3b7a57;
  --color-beginner-bg: rgba(59, 122, 87, 0.12);
  --color-intermediate: #b47834;
  --color-intermediate-bg: rgba(180, 120, 52, 0.12);
  --color-advanced: #b8433e;
  --color-advanced-bg: rgba(184, 67, 62, 0.12);

  --color-mustdo-gold: #b47834;
  --color-mustdo-bg: rgba(180, 120, 52, 0.12);
  --color-mustdo-border: rgba(180, 120, 52, 0.45);
  --color-mustdo-text: #6b4317;

  --header-bg: rgba(247, 243, 232, 0.94);
  --header-border: var(--border-subtle);

  --theme-logo-gradient: linear-gradient(135deg, #c25e36, #b47834);
  --theme-title-gradient: linear-gradient(135deg, #24201a 30%, #c25e36 100%);
  --theme-btn-primary: linear-gradient(135deg, #c25e36, #a84b26);
}

html[data-theme="sepia"] body,
html[data-theme="warm"] body {
  background-color: #f7f3e8 !important;
  color: #24201a !important;
  background-image: 
    radial-gradient(circle at 18% 15%, rgba(194, 94, 54, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 82% 18%, rgba(180, 120, 52, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 50% 60%, rgba(194, 94, 54, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 75% 85%, rgba(180, 120, 52, 0.05) 0%, transparent 45%) !important;
  background-attachment: fixed !important;
}

html[data-theme="sepia"] body::before,
html[data-theme="warm"] body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-size: 36px 36px;
  background-image: 
    linear-gradient(to right, rgba(194, 94, 54, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(180, 120, 52, 0.02) 1px, transparent 1px);
  pointer-events: none;
  z-index: 0;
}

/* Oxford Warm Paper UI Overrides */
html[data-theme="sepia"] .header-action-btn:not(.btn-add-project),
html[data-theme="sepia"] .header-action-btn:not(.btn-add-project) *,
html[data-theme="sepia"] .header-action-btn:not(.btn-add-project) span,
html[data-theme="warm"] .header-action-btn:not(.btn-add-project),
html[data-theme="warm"] .header-action-btn:not(.btn-add-project) *,
html[data-theme="warm"] .header-action-btn:not(.btn-add-project) span {
  color: #24201a !important;
  background: #fcfaf4 !important;
  border-color: #dfd7c4 !important;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06) !important;
  text-shadow: none !important;
}

html[data-theme="sepia"] .theme-switcher-btn,
html[data-theme="sepia"] .theme-switcher-btn *,
html[data-theme="sepia"] #theme-active-icon,
html[data-theme="sepia"] #theme-active-name,
html[data-theme="sepia"] .theme-active-name,
html[data-theme="warm"] .theme-switcher-btn,
html[data-theme="warm"] .theme-switcher-btn *,
html[data-theme="warm"] #theme-active-icon,
html[data-theme="warm"] #theme-active-name,
html[data-theme="warm"] .theme-active-name {
  color: #24201a !important;
  background: #fcfaf4 !important;
  text-shadow: none !important;
}

html[data-theme="sepia"] .header-action-btn:not(.btn-add-project):hover,
html[data-theme="warm"] .header-action-btn:not(.btn-add-project):hover {
  background: #f4ede0 !important;
  border-color: #c25e36 !important;
  transform: translateY(-2px) !important;
}

html[data-theme="sepia"] .btn-add-project,
html[data-theme="warm"] .btn-add-project {
  background: linear-gradient(135deg, #c25e36, #b47834) !important;
  color: #ffffff !important;
  border: none !important;
  box-shadow: 0 2px 10px rgba(194, 94, 54, 0.35) !important;
}
html[data-theme="sepia"] .btn-add-project *,
html[data-theme="warm"] .btn-add-project * {
  color: #ffffff !important;
  text-shadow: none !important;
}

/* Mode Switcher Buttons in Oxford Warm Paper */
html[data-theme="sepia"] .showcase-mode-switcher,
html[data-theme="warm"] .showcase-mode-switcher {
  background-color: #eee7d5 !important;
  border: 1px solid #dfd7c4 !important;
}

html[data-theme="sepia"] .showcase-mode-btn,
html[data-theme="warm"] .showcase-mode-btn {
  color: #574f43 !important;
  background: transparent !important;
}

html[data-theme="sepia"] .showcase-mode-btn:hover,
html[data-theme="warm"] .showcase-mode-btn:hover {
  color: #24201a !important;
  background: rgba(194, 94, 54, 0.1) !important;
}

html[data-theme="sepia"] .showcase-mode-btn.active,
html[data-theme="warm"] .showcase-mode-btn.active {
  background: linear-gradient(135deg, #c25e36, #b47834) !important;
  color: #ffffff !important;
  border: 1px solid #c25e36 !important;
  box-shadow: 0 2px 8px rgba(194, 94, 54, 0.3) !important;
  text-shadow: none !important;
}
html[data-theme="sepia"] .showcase-mode-btn.active *,
html[data-theme="warm"] .showcase-mode-btn.active * {
  color: #ffffff !important;
  text-shadow: none !important;
}

/* Inputs and Search Box */
html[data-theme="sepia"] .search-box,
html[data-theme="warm"] .search-box {
  background: #ffffff !important;
  border-color: #dfd7c4 !important;
}
html[data-theme="sepia"] .search-box input,
html[data-theme="warm"] .search-box input {
  color: #24201a !important;
}

/* Must-Do Filter & View Toggles */
html[data-theme="sepia"] .btn-mustdo-toggle,
html[data-theme="warm"] .btn-mustdo-toggle {
  background-color: rgba(180, 120, 52, 0.14) !important;
  color: #6b4317 !important;
  border: 1px solid rgba(180, 120, 52, 0.4) !important;
}

html[data-theme="sepia"] .view-btn,
html[data-theme="warm"] .view-btn {
  color: #574f43 !important;
}
html[data-theme="sepia"] .view-btn.active,
html[data-theme="warm"] .view-btn.active {
  background: #ffffff !important;
  color: #24201a !important;
  border-color: #dfd7c4 !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08) !important;
}

/* Track Pills & Card Tabs */
html[data-theme="sepia"] .tech-track-pill,
html[data-theme="warm"] .tech-track-pill {
  background-color: #fcfaf4 !important;
  color: #574f43 !important;
  border-color: #dfd7c4 !important;
}
html[data-theme="sepia"] .tech-track-pill:hover,
html[data-theme="warm"] .tech-track-pill:hover {
  background-color: #f4ede0 !important;
  color: #24201a !important;
  border-color: #c25e36 !important;
}
html[data-theme="sepia"] .tech-track-pill.active,
html[data-theme="warm"] .tech-track-pill.active {
  background-color: #c25e36 !important;
  color: #ffffff !important;
  border-color: #c25e36 !important;
}

html[data-theme="sepia"] .showcase-tab-btn,
html[data-theme="warm"] .showcase-tab-btn {
  color: #574f43 !important;
}
html[data-theme="sepia"] .showcase-tab-btn:hover,
html[data-theme="warm"] .showcase-tab-btn:hover {
  color: #24201a !important;
}
html[data-theme="sepia"] .showcase-tab-btn.active,
html[data-theme="warm"] .showcase-tab-btn.active {
  color: #c25e36 !important;
  border-bottom-color: #c25e36 !important;
}
html[data-theme="sepia"] .theme-picker-menu,
html[data-theme="warm"] .theme-picker-menu {
  background: #fdfbf7 !important;
  border: 1px solid #dfd7c4 !important;
  box-shadow: 0 16px 40px rgba(70, 50, 30, 0.12) !important;
}

html[data-theme="sepia"] .theme-picker-header,
html[data-theme="warm"] .theme-picker-header {
  color: #c25e36 !important;
  border-bottom-color: #ede6d8 !important;
}

html[data-theme="sepia"] .theme-option-item,
html[data-theme="warm"] .theme-option-item {
  color: #24201a !important;
}

html[data-theme="sepia"] .theme-option-item:hover,
html[data-theme="warm"] .theme-option-item:hover {
  background: #f2ebd9 !important;
}

/* ==========================================================================
   3. THEME: NORD POLAR NIGHT (Calm Arctic Focus - Developer Acclaimed)
   ========================================================================== */
html[data-theme="nord"] {
  --theme-name: "nord";
  --theme-accent: #88c0d0;
  --theme-accent-secondary: #81a1c1;
  --theme-glow: rgba(136, 192, 208, 0.45);

  --bg-base: #242933;
  --bg-surface: rgba(46, 52, 64, 0.85);
  --bg-surface-elevated: rgba(59, 66, 82, 0.94);
  --bg-card: rgba(46, 52, 64, 0.80);
  --bg-card-hover: rgba(59, 66, 82, 0.95);
  --bg-input: rgba(36, 41, 51, 0.95);

  --border-subtle: rgba(76, 86, 106, 0.45);
  --border-glow: rgba(136, 192, 208, 0.45);
  --border-glow-gold: rgba(235, 203, 139, 0.45);

  --neon-cyan: #88c0d0;
  --neon-indigo: #81a1c1;
  --neon-emerald: #a3be8c;
  --neon-rose: #bf616a;
  --neon-amber: #ebcb8b;
  --neon-purple: #b48ead;

  --text-high: #eceff4;
  --text-medium: #d8dee9;
  --text-low: #8b97ab;

  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --color-bg-app: var(--bg-base);
  --color-bg-card: var(--bg-card);
  --color-bg-card-hover: var(--bg-card-hover);
  --color-bg-subtle: var(--bg-surface);
  --color-border: var(--border-subtle);
  --color-border-subtle: rgba(76, 86, 106, 0.25);

  --color-text-main: var(--text-high);
  --color-text-muted: var(--text-medium);
  --color-text-light: var(--text-low);

  --color-primary: #88c0d0;
  --color-primary-hover: #8fbcbb;
  --color-primary-subtle: rgba(136, 192, 208, 0.18);

  --color-beginner: #a3be8c;
  --color-beginner-bg: rgba(163, 190, 140, 0.15);
  --color-intermediate: #ebcb8b;
  --color-intermediate-bg: rgba(235, 203, 139, 0.15);
  --color-advanced: #bf616a;
  --color-advanced-bg: rgba(191, 97, 106, 0.15);

  --color-mustdo-gold: #ebcb8b;
  --color-mustdo-bg: rgba(235, 203, 139, 0.15);
  --color-mustdo-border: rgba(235, 203, 139, 0.4);
  --color-mustdo-text: #ebcb8b;

  --header-bg: rgba(36, 41, 51, 0.92);
  --header-border: var(--border-subtle);

  --theme-logo-gradient: linear-gradient(135deg, #5e81ac, #88c0d0);
  --theme-title-gradient: linear-gradient(135deg, #eceff4 30%, #88c0d0 100%);
  --theme-btn-primary: linear-gradient(135deg, #5e81ac, #88c0d0);
}

html[data-theme="nord"] body {
  background-color: #242933 !important;
  color: #eceff4 !important;
  background-image: 
    radial-gradient(circle at 18% 15%, rgba(136, 192, 208, 0.16) 0%, transparent 45%),
    radial-gradient(circle at 82% 18%, rgba(129, 161, 193, 0.14) 0%, transparent 45%),
    radial-gradient(circle at 50% 60%, rgba(94, 129, 172, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 75% 85%, rgba(163, 190, 140, 0.10) 0%, transparent 45%) !important;
  background-attachment: fixed !important;
}

html[data-theme="nord"] body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-size: 38px 38px;
  background-image: 
    linear-gradient(to right, rgba(136, 192, 208, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(129, 161, 193, 0.03) 1px, transparent 1px);
  pointer-events: none;
  z-index: 0;
}

/* ==========================================================================
   4. THEME: CATPPUCCIN MOCHA (Soothing Ergonomic Pastel Study Palette)
   ========================================================================== */
html[data-theme="mocha"],
html[data-theme="catppuccin"] {
  --theme-name: "mocha";
  --theme-accent: #cba6f7;
  --theme-accent-secondary: #89b4fa;
  --theme-glow: rgba(203, 166, 247, 0.45);

  --bg-base: #181825;
  --bg-surface: rgba(30, 30, 46, 0.85);
  --bg-surface-elevated: rgba(49, 50, 68, 0.94);
  --bg-card: rgba(30, 30, 46, 0.80);
  --bg-card-hover: rgba(49, 50, 68, 0.95);
  --bg-input: rgba(24, 24, 37, 0.95);

  --border-subtle: rgba(203, 166, 247, 0.18);
  --border-glow: rgba(203, 166, 247, 0.45);
  --border-glow-gold: rgba(249, 226, 175, 0.45);

  --neon-cyan: #89dceb;
  --neon-indigo: #89b4fa;
  --neon-emerald: #a6e3a1;
  --neon-rose: #f38ba8;
  --neon-amber: #f9e2af;
  --neon-purple: #cba6f7;

  --text-high: #cdd6f4;
  --text-medium: #a6adc8;
  --text-low: #6c7086;

  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --color-bg-app: var(--bg-base);
  --color-bg-card: var(--bg-card);
  --color-bg-card-hover: var(--bg-card-hover);
  --color-bg-subtle: var(--bg-surface);
  --color-border: var(--border-subtle);
  --color-border-subtle: rgba(203, 166, 247, 0.10);

  --color-text-main: var(--text-high);
  --color-text-muted: var(--text-medium);
  --color-text-light: var(--text-low);

  --color-primary: #cba6f7;
  --color-primary-hover: #b4befe;
  --color-primary-subtle: rgba(203, 166, 247, 0.18);

  --color-beginner: #a6e3a1;
  --color-beginner-bg: rgba(166, 227, 161, 0.15);
  --color-intermediate: #f9e2af;
  --color-intermediate-bg: rgba(249, 226, 175, 0.15);
  --color-advanced: #f38ba8;
  --color-advanced-bg: rgba(243, 139, 168, 0.15);

  --color-mustdo-gold: #f9e2af;
  --color-mustdo-bg: rgba(249, 226, 175, 0.15);
  --color-mustdo-border: rgba(249, 226, 175, 0.4);
  --color-mustdo-text: #f9e2af;

  --header-bg: rgba(24, 24, 37, 0.92);
  --header-border: var(--border-subtle);

  --theme-logo-gradient: linear-gradient(135deg, #cba6f7, #89b4fa);
  --theme-title-gradient: linear-gradient(135deg, #cdd6f4 30%, #cba6f7 100%);
  --theme-btn-primary: linear-gradient(135deg, #cba6f7, #89b4fa);
}

html[data-theme="mocha"] body,
html[data-theme="catppuccin"] body {
  background-color: #181825 !important;
  color: #cdd6f4 !important;
  background-image: 
    radial-gradient(circle at 18% 15%, rgba(203, 166, 247, 0.18) 0%, transparent 45%),
    radial-gradient(circle at 82% 18%, rgba(137, 180, 250, 0.16) 0%, transparent 45%),
    radial-gradient(circle at 50% 60%, rgba(180, 190, 254, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 75% 85%, rgba(166, 227, 161, 0.10) 0%, transparent 45%) !important;
  background-attachment: fixed !important;
}

html[data-theme="mocha"] body::before,
html[data-theme="catppuccin"] body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-size: 38px 38px;
  background-image: 
    linear-gradient(to right, rgba(203, 166, 247, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(137, 180, 250, 0.025) 1px, transparent 1px);
  pointer-events: none;
  z-index: 0;
}

/* ==========================================================================
   5. THEME: EVERGREEN FOREST (Deep Alpine Sage - Cognitive Endurance)
   ========================================================================== */
html[data-theme="pine"],
html[data-theme="forest"] {
  --theme-name: "pine";
  --theme-accent: #68b69b;
  --theme-accent-secondary: #90c7b4;
  --theme-glow: rgba(104, 182, 155, 0.45);

  --bg-base: #0c1613;
  --bg-surface: rgba(18, 32, 27, 0.85);
  --bg-surface-elevated: rgba(26, 44, 38, 0.94);
  --bg-card: rgba(18, 32, 27, 0.80);
  --bg-card-hover: rgba(26, 44, 38, 0.95);
  --bg-input: rgba(12, 22, 19, 0.95);

  --border-subtle: rgba(104, 182, 155, 0.18);
  --border-glow: rgba(104, 182, 155, 0.45);
  --border-glow-gold: rgba(212, 163, 115, 0.45);

  --neon-cyan: #78c5ad;
  --neon-indigo: #5d9e87;
  --neon-emerald: #43aa8b;
  --neon-rose: #d9777f;
  --neon-amber: #d4a373;
  --neon-purple: #90c7b4;

  --text-high: #edf5f2;
  --text-medium: #b4ccc4;
  --text-low: #6c8a81;

  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --color-bg-app: var(--bg-base);
  --color-bg-card: var(--bg-card);
  --color-bg-card-hover: var(--bg-card-hover);
  --color-bg-subtle: var(--bg-surface);
  --color-border: var(--border-subtle);
  --color-border-subtle: rgba(104, 182, 155, 0.10);

  --color-text-main: var(--text-high);
  --color-text-muted: var(--text-medium);
  --color-text-light: var(--text-low);

  --color-primary: #68b69b;
  --color-primary-hover: #90c7b4;
  --color-primary-subtle: rgba(104, 182, 155, 0.18);

  --color-beginner: #43aa8b;
  --color-beginner-bg: rgba(67, 170, 139, 0.15);
  --color-intermediate: #d4a373;
  --color-intermediate-bg: rgba(212, 163, 115, 0.15);
  --color-advanced: #d9777f;
  --color-advanced-bg: rgba(217, 119, 127, 0.15);

  --color-mustdo-gold: #d4a373;
  --color-mustdo-bg: rgba(212, 163, 115, 0.15);
  --color-mustdo-border: rgba(212, 163, 115, 0.4);
  --color-mustdo-text: #faedcd;

  --header-bg: rgba(12, 22, 19, 0.92);
  --header-border: var(--border-subtle);

  --theme-logo-gradient: linear-gradient(135deg, #43aa8b, #68b69b);
  --theme-title-gradient: linear-gradient(135deg, #edf5f2 30%, #68b69b 100%);
  --theme-btn-primary: linear-gradient(135deg, #43aa8b, #68b69b);
}

html[data-theme="pine"] body,
html[data-theme="forest"] body {
  background-color: #0c1613 !important;
  color: #edf5f2 !important;
  background-image: 
    radial-gradient(circle at 18% 15%, rgba(104, 182, 155, 0.18) 0%, transparent 45%),
    radial-gradient(circle at 82% 18%, rgba(67, 170, 139, 0.16) 0%, transparent 45%),
    radial-gradient(circle at 50% 60%, rgba(93, 158, 135, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 75% 85%, rgba(212, 163, 115, 0.08) 0%, transparent 45%) !important;
  background-attachment: fixed !important;
}

html[data-theme="pine"] body::before,
html[data-theme="forest"] body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-size: 38px 38px;
  background-image: 
    linear-gradient(to right, rgba(104, 182, 155, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(67, 170, 139, 0.025) 1px, transparent 1px);
  pointer-events: none;
  z-index: 0;
}

/* ==========================================================================
   5. THEME: DAYLIGHT STUDIO (Pristine High-Contrast Apple/Linear Light Mode)
   ========================================================================== */
html[data-theme="daylight"],
html[data-theme="light"] {
  --theme-name: "daylight";
  --theme-accent: #2563eb;
  --theme-accent-secondary: #4f46e5;
  --theme-glow: rgba(37, 99, 235, 0.35);

  --bg-base: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-input: #f8fafc;

  --border-subtle: #e2e8f0;
  --border-glow: rgba(37, 99, 235, 0.35);
  --border-glow-gold: rgba(217, 119, 6, 0.35);

  --neon-cyan: #2563eb;
  --neon-indigo: #4f46e5;
  --neon-emerald: #059669;
  --neon-rose: #e11d48;
  --neon-amber: #d97706;
  --neon-purple: #9333ea;

  --text-high: #0f172a;
  --text-medium: #475569;
  --text-low: #64748b;

  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --color-bg-app: #f8fafc;
  --color-bg-card: #ffffff;
  --color-bg-card-hover: #f1f5f9;
  --color-bg-subtle: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-subtle: #edf2f7;

  --color-text-main: #0f172a;
  --color-text-muted: #475569;
  --color-text-light: #64748b;

  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-subtle: #eff6ff;

  --color-beginner: #059669;
  --color-beginner-bg: #ecfdf5;
  --color-intermediate: #d97706;
  --color-intermediate-bg: #fffbeb;
  --color-advanced: #e11d48;
  --color-advanced-bg: #fff1f2;

  --color-mustdo-gold: #d97706;
  --color-mustdo-bg: #fef3c7;
  --color-mustdo-border: #fcd34d;
  --color-mustdo-text: #92400e;

  --header-bg: rgba(255, 255, 255, 0.94);
  --header-border: #e2e8f0;

  --theme-logo-gradient: linear-gradient(135deg, #2563eb, #4f46e5);
  --theme-title-gradient: linear-gradient(135deg, #0f172a 30%, #2563eb 100%);
  --theme-btn-primary: linear-gradient(135deg, #2563eb, #3b82f6);
}

html[data-theme="daylight"] body,
html[data-theme="light"] body {
  background-color: #f8fafc !important;
  color: #0f172a !important;
  background-image: none !important;
}

html[data-theme="daylight"] body::before,
html[data-theme="light"] body::before {
  display: none !important;
}

/* ==========================================================================
   6. THEME: OBSIDIAN CARBON (Stealth Minimalist Dark Mode)
   ========================================================================== */
html[data-theme="carbon"],
html[data-theme="night"],
html[data-theme="dark"] {
  --theme-name: "carbon";
  --theme-accent: #94a3b8;
  --theme-accent-secondary: #cbd5e1;
  --theme-glow: rgba(255, 255, 255, 0.25);

  --bg-base: #060709;
  --bg-surface: #11141a;
  --bg-surface-elevated: #181c24;
  --bg-card: #11141a;
  --bg-card-hover: #1b2029;
  --bg-input: #060709;

  --border-subtle: rgba(255, 255, 255, 0.12);
  --border-glow: rgba(255, 255, 255, 0.35);
  --border-glow-gold: rgba(245, 158, 11, 0.4);

  --neon-cyan: #94a3b8;
  --neon-indigo: #cbd5e1;
  --neon-emerald: #10b981;
  --neon-rose: #f43f5e;
  --neon-amber: #f59e0b;
  --neon-purple: #94a3b8;

  --text-high: #f8fafc;
  --text-medium: #cbd5e1;
  --text-low: #94a3b8;

  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --color-bg-app: #060709;
  --color-bg-card: #11141a;
  --color-bg-card-hover: #1b2029;
  --color-bg-subtle: #181c24;
  --color-border: #262c38;
  --color-border-subtle: #181c24;

  --color-text-main: #f8fafc;
  --color-text-muted: #cbd5e1;
  --color-text-light: #94a3b8;

  --color-primary: #94a3b8;
  --color-primary-hover: #e2e8f0;
  --color-primary-subtle: rgba(255, 255, 255, 0.12);

  --color-beginner: #34d399;
  --color-beginner-bg: rgba(16, 185, 129, 0.15);
  --color-intermediate: #fbbf24;
  --color-intermediate-bg: rgba(245, 158, 11, 0.15);
  --color-advanced: #fb7185;
  --color-advanced-bg: rgba(244, 63, 94, 0.15);

  --color-mustdo-gold: #fbbf24;
  --color-mustdo-bg: rgba(245, 158, 11, 0.15);
  --color-mustdo-border: rgba(245, 158, 11, 0.35);
  --color-mustdo-text: #fef08a;

  --header-bg: rgba(6, 7, 9, 0.92);
  --header-border: #262c38;

  --theme-logo-gradient: linear-gradient(135deg, #475569, #334155);
  --theme-title-gradient: linear-gradient(135deg, #ffffff 40%, #cbd5e1 100%);
  --theme-btn-primary: linear-gradient(135deg, #475569, #64748b);
}

html[data-theme="carbon"] body,
html[data-theme="night"] body,
html[data-theme="dark"] body {
  background-color: #060709 !important;
  color: #f8fafc !important;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.06) 0%, transparent 50%) !important;
}

html[data-theme="carbon"] body::before,
html[data-theme="night"] body::before,
html[data-theme="dark"] body::before {
  display: none !important;
}

/* ==========================================================================
   Header & Action Ribbon: Spacious, Rich, High-Visibility Design
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(28px) !important;
  -webkit-backdrop-filter: blur(28px) !important;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.header-content {
  height: 4.6rem !important;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem !important;
}

/* Brand Section */
.brand-section {
  display: flex;
  align-items: center;
  gap: 0.95rem;
  flex-shrink: 0;
}

.brand-logo {
  width: 2.75rem !important;
  height: 2.75rem !important;
  border-radius: 0.85rem !important;
  font-size: 1.4rem !important;
  background: var(--theme-logo-gradient) !important;
  border: 1px solid var(--border-glow) !important;
  box-shadow: 0 0 24px var(--theme-glow) !important;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease;
}

.brand-logo:hover {
  transform: scale(1.08) rotate(3deg);
  box-shadow: 0 0 32px var(--theme-glow) !important;
}

.brand-title h1 {
  font-family: var(--font-display) !important;
  font-size: 1.25rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.02em !important;
  line-height: 1.25;
  background: var(--theme-title-gradient) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
}

.brand-subtitle {
  font-size: 0.78rem !important;
  color: var(--text-medium) !important;
  letter-spacing: 0.01em;
  font-weight: 500;
  white-space: nowrap;
}

/* Action Ribbon */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem !important;
  flex-wrap: nowrap;
}

/* Action Buttons Base - HIGH CONTRAST & VISIBILITY */
.header-action-btn {
  font-family: var(--font-display, 'Plus Jakarta Sans'), sans-serif !important;
  font-weight: 700 !important;
  font-size: 0.84rem !important;
  line-height: 1 !important;
  border-radius: 0.75rem !important;
  padding: 0.58rem 1.05rem !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 0.5rem !important;
  cursor: pointer !important;
  white-space: nowrap !important;
  transition: all 0.22s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
  text-decoration: none !important;
  outline: none !important;
}

/* Enforce 100% white text on all dark themes */
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .header-action-btn,
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .header-action-btn *,
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .header-action-btn span {
  color: #ffffff !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4) !important;
}

/* Enforce high-contrast dark text on daylight mode */
html[data-theme="daylight"] .header-action-btn:not(.btn-add-project),
html[data-theme="daylight"] .header-action-btn:not(.btn-add-project) *,
html[data-theme="daylight"] .header-action-btn:not(.btn-add-project) span,
html[data-theme="light"] .header-action-btn:not(.btn-add-project),
html[data-theme="light"] .header-action-btn:not(.btn-add-project) *,
html[data-theme="light"] .header-action-btn:not(.btn-add-project) span {
  color: #0f172a !important;
  text-shadow: none !important;
}

/* Button 1: Study Hub */
.btn-study-hub {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.32), rgba(99, 102, 241, 0.32)) !important;
  border: 1px solid rgba(192, 132, 252, 0.55) !important;
  box-shadow: 0 0 16px rgba(168, 85, 247, 0.35) !important;
}

.btn-study-hub:hover {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.48), rgba(99, 102, 241, 0.48)) !important;
  border-color: #c084fc !important;
  box-shadow: 0 0 24px rgba(168, 85, 247, 0.55) !important;
  transform: translateY(-2px) !important;
}

/* Button 2: Add Project (Hero CTA) */
.btn-add-project {
  background: var(--theme-btn-primary, linear-gradient(135deg, #38bdf8, #818cf8)) !important;
  border: none !important;
  box-shadow: 0 0 20px var(--theme-glow, rgba(56, 189, 248, 0.45)) !important;
}

.btn-add-project,
.btn-add-project *,
.btn-add-project span {
  color: #04060a !important;
  font-weight: 800 !important;
  text-shadow: none !important;
}

.btn-add-project:hover {
  filter: brightness(1.1) !important;
  box-shadow: 0 0 30px var(--theme-glow, rgba(56, 189, 248, 0.65)) !important;
  transform: translateY(-2px) scale(1.02) !important;
}

/* Button 3: Data Manager */
.btn-data-modal {
  background: rgba(30, 41, 59, 0.85) !important;
  border: 1px solid rgba(255, 255, 255, 0.18) !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3) !important;
  backdrop-filter: blur(14px) !important;
}

.btn-data-modal:hover {
  background: rgba(51, 65, 85, 0.95) !important;
  border-color: var(--theme-accent, #38bdf8) !important;
  box-shadow: 0 0 16px var(--theme-glow, rgba(56, 189, 248, 0.35)) !important;
  transform: translateY(-2px) !important;
}

/* Button 4: Theme Switcher */
.theme-switcher-btn {
  background: rgba(15, 23, 42, 0.88) !important;
  border: 1px solid var(--theme-accent, #38bdf8) !important;
  box-shadow: 0 0 16px var(--theme-glow, rgba(56, 189, 248, 0.35)) !important;
  backdrop-filter: blur(14px) !important;
}

.theme-switcher-btn:hover {
  filter: brightness(1.15) !important;
  box-shadow: 0 0 22px var(--theme-glow, rgba(56, 189, 248, 0.55)) !important;
  transform: translateY(-2px) !important;
}

.theme-active-icon {
  font-size: 1.05rem;
  display: inline-flex;
  align-items: center;
}

.theme-active-name {
  font-family: var(--font-display, sans-serif);
  font-weight: 700;
  letter-spacing: 0.01em;
}

/* Button 5: User Profile */
.btn-user-profile {
  background: rgba(15, 23, 42, 0.88) !important;
  border: 1px solid rgba(255, 255, 255, 0.18) !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3) !important;
  backdrop-filter: blur(14px) !important;
}

.btn-user-profile:hover {
  border-color: var(--theme-accent, #38bdf8) !important;
  box-shadow: 0 0 16px var(--theme-glow, rgba(56, 189, 248, 0.35)) !important;
  transform: translateY(-2px) !important;
}

.user-app-id-pill {
  background: rgba(56, 189, 248, 0.18);
  border: 1px solid var(--theme-accent, #38bdf8);
  color: var(--theme-accent, #38bdf8);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.14rem 0.45rem;
  border-radius: 4px;
}

/* Theme Dropdown Menu */
.theme-picker-menu {
  position: absolute;
  top: calc(100% + 0.65rem);
  right: 0;
  z-index: 1000;
  min-width: 320px;
  background: rgba(8, 12, 22, 0.96) !important;
  backdrop-filter: blur(28px) !important;
  -webkit-backdrop-filter: blur(28px) !important;
  border: 1px solid var(--theme-accent, #38bdf8) !important;
  border-radius: 1.15rem !important;
  padding: 0.85rem !important;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.9), 0 0 35px var(--theme-glow, rgba(56, 189, 248, 0.3)) !important;
  animation: themeDropdownFade 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

html[data-theme="daylight"] .theme-picker-menu,
html[data-theme="light"] .theme-picker-menu {
  background: #ffffff !important;
  border: 1px solid #e2e8f0 !important;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15) !important;
}

@keyframes themeDropdownFade {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.theme-picker-header {
  font-family: var(--font-mono, monospace);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--theme-accent, #38bdf8);
  padding: 0.4rem 0.65rem 0.65rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 0.5rem;
}

.theme-options-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.theme-option-item {
  display: flex !important;
  align-items: center !important;
  gap: 0.85rem !important;
  padding: 0.7rem 0.95rem !important;
  border-radius: 0.85rem !important;
  border: 1px solid transparent !important;
  background: transparent !important;
  color: var(--text-high) !important;
  cursor: pointer !important;
  text-align: left !important;
  width: 100% !important;
  transition: all 0.2s ease !important;
  position: relative;
  user-select: none !important;
}

.theme-option-item * {
  pointer-events: none !important;
}

.theme-option-item:hover {
  background: rgba(255, 255, 255, 0.08) !important;
  border-color: rgba(255, 255, 255, 0.15) !important;
  transform: translateX(4px) !important;
}

html[data-theme="daylight"] .theme-option-item,
html[data-theme="light"] .theme-option-item {
  color: #0f172a !important;
}

html[data-theme="daylight"] .theme-option-item:hover,
html[data-theme="light"] .theme-option-item:hover {
  background: #f1f5f9 !important;
  border-color: #e2e8f0 !important;
}

.theme-option-item.active {
  background: rgba(255, 255, 255, 0.12) !important;
  border-color: var(--theme-accent, #38bdf8) !important;
  box-shadow: 0 0 16px var(--theme-glow, rgba(56, 189, 248, 0.35)) !important;
}

.theme-option-icon {
  font-size: 1.3rem;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.6rem;
  background: rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

.theme-option-info {
  flex: 1;
}

.theme-option-title {
  font-family: var(--font-display, sans-serif);
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.25;
}

.theme-option-desc {
  font-size: 0.74rem;
  color: var(--text-medium);
  margin-top: 0.15rem;
}

.theme-option-preview {
  width: 1.45rem;
  height: 1.45rem;
  border-radius: 9999px;
  border: 2px solid rgba(255, 255, 255, 0.25);
  flex-shrink: 0;
}

.neon-preview { background: linear-gradient(135deg, #04060a 40%, #38bdf8 100%) !important; }
.sepia-preview { background: linear-gradient(135deg, #f7f3e8 40%, #c25e36 100%) !important; border-color: #dfd7c4 !important; }
.nord-preview { background: linear-gradient(135deg, #242933 40%, #88c0d0 100%) !important; border-color: rgba(136, 192, 208, 0.35) !important; }
.mocha-preview { background: linear-gradient(135deg, #181825 40%, #cba6f7 100%) !important; border-color: rgba(203, 166, 247, 0.35) !important; }
.pine-preview { background: linear-gradient(135deg, #0c1613 40%, #68b69b 100%) !important; border-color: rgba(104, 182, 155, 0.35) !important; }





.frost-preview {
  background: linear-gradient(135deg, #050d1a 0%, #06b6d4 50%, #2dd4bf 100%);
  box-shadow: 0 0 10px rgba(45, 212, 191, 0.6);
}

.daylight-preview {
  background: linear-gradient(135deg, #ffffff 0%, #2563eb 100%);
  border-color: #cbd5e1;
}

.carbon-preview {
  background: linear-gradient(135deg, #060709 0%, #94a3b8 100%);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

/* ==========================================================================
   Universal UI Component Enhancements (Dynamic Theme-Reactive Accents)
   ========================================================================== */
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .site-header {
  background: var(--header-bg) !important;
  border-bottom: 1px solid var(--border-subtle) !important;
}

html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .stat-card,
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .engineering-rank-banner,
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .showcase-banner-card,
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .controls-card,
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .project-card,
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .showcase-card {
  background: var(--bg-card) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border: 1px solid var(--border-subtle) !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.45) !important;
}

html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .project-card:hover {
  transform: translateY(-4px) !important;
  border-color: var(--theme-accent) !important;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6), 0 0 24px var(--theme-glow) !important;
}

html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .search-box {
  background: var(--bg-input) !important;
  border: 1px solid var(--border-subtle) !important;
}

html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .search-box:focus-within {
  border-color: var(--theme-accent) !important;
  box-shadow: 0 0 0 3px var(--theme-glow), 0 0 20px var(--theme-glow) !important;
}

html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .search-box input {
  color: #ffffff !important;
}

html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .filter-select {
  background-color: var(--bg-input) !important;
  border: 1px solid var(--border-subtle) !important;
  color: var(--text-high) !important;
}

html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .modal-card {
  background: var(--bg-surface-elevated) !important;
  border: 1px solid var(--border-glow) !important;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.9), 0 0 45px var(--theme-glow) !important;
}

/* Rank XP Momentum Progress Bar Glow */
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .diff-bar-fill.completed {
  background: linear-gradient(90deg, var(--theme-accent), var(--theme-accent-secondary)) !important;
  box-shadow: 0 0 14px var(--theme-glow) !important;
}

/* Card Accent Top Lines */
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .project-card::before {
  background: linear-gradient(90deg, transparent, var(--theme-accent), transparent) !important;
}

/* Active Mode Switcher Pill */
html:not([data-theme="daylight"]):not([data-theme="light"]):not([data-theme="sepia"]):not([data-theme="warm"]):not([data-theme="sepia"]):not([data-theme="warm"]) .showcase-mode-btn.active {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.1)) !important;
  border-color: var(--theme-accent) !important;
  box-shadow: 0 0 20px var(--theme-glow) !important;
  color: #ffffff !important;
}