:root {
  color-scheme: light;
  --bg-page: #f5f7fb;
  --bg-primary: #ecf2ff;
  --bg-gradient-end: #dbe7ff;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f3f4f7;
  --bg-quaternary: #e3e9f6;
  --surface-card: #ffffff;
  --surface-card-alt: #f9fafb;
  --surface-muted: #f3f6fd;
  --surface-contrast: #0f172a;
  --text-primary: #0f172a;
  --text-secondary: #1f2937;
  --text-muted: #6b7280;
  --text-inverse: #f8fafc;
  --border-color: #cfd8e9;
  --border-color-strong: #b8c2d4;
  --border-soft: rgba(15, 23, 42, 0.08);
  --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.08);
  --shadow-soft: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-glow: 0 0 24px rgba(99, 102, 241, 0.12);
  --accent-primary: #00b894;
  --accent-secondary: #6366f1;
  --accent-danger: #dc2626;
  --accent-warning: #d97706;
  --accent-success: #059669;
  --accent-info: #0ea5e9;
  --marine-900: #e7ecf8;
  --marine-800: #d6e2fb;
  --marine-700: #c2d5f3;
  --marine-600: #b5cbef;
  --text-base: var(--text-primary);
  --accent-gold: #c27803;
  --accent-cyan: #0891b2;
  --panel-overlay: rgba(15, 23, 42, 0.45);
  --scrollbar-track: rgba(15, 23, 42, 0.08);
  --scrollbar-thumb: rgba(15, 23, 42, 0.3);
  --scrollbar-thumb-hover: rgba(15, 23, 42, 0.45);
  --input-background: #ffffff;
  --input-border: #d0d7e3;
  --input-placeholder: #94a3b8;
  --dropdown-background: #ffffff;
  --dropdown-border: #e5e7eb;
  --dropdown-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
  --overlay-backdrop: rgba(15, 23, 42, 0.55);
}

:root[data-theme='dark'] {
  color-scheme: dark;
  --bg-page: #060606;
  --bg-primary: #08090a;
  --bg-gradient-end: #0d0d0f;
  --bg-secondary: #111213;
  --bg-tertiary: #151617;
  --bg-quaternary: #1a1c1d;
  --surface-card: #141414;
  --surface-card-alt: #101010;
  --surface-muted: #0c0c0c;
  --surface-contrast: #050505;
  --text-primary: #f8fafc;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;
  --text-inverse: #050912;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-strong: rgba(255, 255, 255, 0.12);
  --border-soft: rgba(148, 163, 184, 0.22);
  --shadow-card: 0 20px 45px rgba(0, 0, 0, 0.7);
  --shadow-soft: 0 1px 6px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 30px rgba(0, 212, 170, 0.25);
  --accent-primary: #00d4aa;
  --accent-secondary: #818cf8;
  --accent-danger: #f87171;
  --accent-warning: #fbbf24;
  --accent-success: #34d399;
  --accent-info: #38bdf8;
  --marine-900: #080808;
  --marine-800: #101010;
  --marine-700: #161616;
  --marine-600: #1c1c1c;
  --text-base: #f8fafc;
  --accent-gold: #ffbb7f;
  --accent-cyan: #6bead7;
  --panel-overlay: rgba(0, 0, 0, 0.75);
  --scrollbar-track: rgba(255, 255, 255, 0.05);
  --scrollbar-thumb: rgba(255, 255, 255, 0.18);
  --scrollbar-thumb-hover: rgba(255, 255, 255, 0.32);
  --input-background: #141414;
  --input-border: rgba(255, 255, 255, 0.12);
  --input-placeholder: #94a3b8;
  --dropdown-background: #141414;
  --dropdown-border: rgba(255, 255, 255, 0.08);
  --dropdown-shadow: 0 32px 60px rgba(0, 0, 0, 0.8);
  --overlay-backdrop: rgba(0, 0, 0, 0.85);
}

html,
body {
  background-color: var(--bg-page);
  color: var(--text-primary);
  transition: background-color 0.25s ease, color 0.25s ease;
}

body {
  min-height: 100vh;
}

a {
  color: var(--accent-secondary);
  transition: color 0.2s ease;
}

a:hover,
a:focus {
  color: var(--accent-primary);
}

::selection {
  background: var(--accent-secondary);
  color: var(--text-inverse);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

[data-theme] .elevated-surface {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
}