:root {
  color-scheme: light dark;
  --font-family-display: 'Space Grotesk', 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-base: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.7rem;
  --font-size-sm: 0.8rem;
  --font-size-base: 0.9rem;
  --font-size-lg: 1.15rem;
  --font-size-xl: 1.8rem;
  --line-height-tight: 1.15;
  --line-height-base: 1.5;

  --primary: #0f172a;
  --primary-soft: #1e293b;
  --accent-soft: #5eead4;
  --accent: #14b8a6;
  --action: #2563eb;

  --color-bg: #f4f7fb;
  --color-surface: rgba(255, 255, 255, 0.78);
  --color-surface-muted: rgba(15, 23, 42, 0.06);
  --color-surface-contrast: rgba(255, 255, 255, 0.96);
  --color-surface-deep: #0f172a;
  --color-text: #0f172a;
  --color-text-muted: #475569;
  --color-border: rgba(15, 23, 42, 0.12);
  --color-accent: var(--accent);
  --color-accent-soft: rgba(20, 184, 166, 0.16);
  --color-primary: var(--action);
  --color-success: #16a34a;
  --color-danger: #dc2626;
  --color-warning: #d97706;
  --color-info: #2563eb;
  --color-bg-hover: rgba(15, 23, 42, 0.06);
  --color-hover: rgba(15, 23, 42, 0.06);
  --color-input-bg: rgba(20, 184, 166, 0.12);
  --color-input-bg-focus: rgba(20, 184, 166, 0.18);

  --interactive-border: rgba(37, 99, 235, 0.35);
  --interactive-bg: rgba(37, 99, 235, 0.08);
  --interactive-bg-hover: rgba(37, 99, 235, 0.16);
  --interactive-bg-active: rgba(37, 99, 235, 0.24);
  --interactive-text-active: #1e3a8a;

  --glass-bg: rgba(255, 255, 255, 0.68);
  --glass-border: rgba(15, 23, 42, 0.08);
  --glass-shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
  --glass-blur: 18px;

  --gradient-primary: linear-gradient(135deg, #2563eb 0%, #14b8a6 100%);
  --gradient-panel: linear-gradient(140deg, rgba(37, 99, 235, 0.12), rgba(20, 184, 166, 0.12));
  --gradient-mesh:
    radial-gradient(circle at 12% 12%, rgba(94, 234, 212, 0.2), transparent 45%),
    radial-gradient(circle at 88% 8%, rgba(37, 99, 235, 0.18), transparent 45%),
    radial-gradient(circle at 80% 85%, rgba(15, 23, 42, 0.12), transparent 50%);

  --sidebar-bg: rgba(255, 255, 255, 0.72);
  --sidebar-border: rgba(15, 23, 42, 0.1);
  --sidebar-text: #0f172a;
  --sidebar-muted: rgba(15, 23, 42, 0.55);
  --sidebar-hover: rgba(37, 99, 235, 0.12);

  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --space-1: 0.3rem;
  --space-2: 0.68rem;
  --space-3: 1rem;
  --space-4: 1.4rem;
  --content-max-width: 1080px;

  --shadow-soft: 0 10px 24px rgba(15, 23, 42, 0.1);
  --shadow-medium: 0 24px 48px rgba(15, 23, 42, 0.14);
  --shadow-strong: 0 40px 80px rgba(15, 23, 42, 0.18);
}

:root[data-theme='dark'] {
  color-scheme: dark;
  --color-bg: #0b1120;
  --color-surface: rgba(15, 23, 42, 0.78);
  --color-surface-muted: rgba(2, 6, 23, 0.6);
  --color-surface-contrast: rgba(15, 23, 42, 0.92);
  --color-surface-deep: #05070f;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-border: rgba(148, 163, 184, 0.18);
  --color-accent-soft: rgba(94, 234, 212, 0.2);
  --color-primary: #3b82f6;
  --color-bg-hover: rgba(148, 163, 184, 0.14);
  --color-hover: rgba(148, 163, 184, 0.14);
  --color-input-bg: rgba(94, 234, 212, 0.12);
  --color-input-bg-focus: rgba(94, 234, 212, 0.2);

  --interactive-border: rgba(59, 130, 246, 0.6);
  --interactive-bg: rgba(59, 130, 246, 0.14);
  --interactive-bg-hover: rgba(59, 130, 246, 0.22);
  --interactive-bg-active: rgba(59, 130, 246, 0.32);
  --interactive-text-active: #bfdbfe;

  --glass-bg: rgba(15, 23, 42, 0.7);
  --glass-border: rgba(148, 163, 184, 0.16);
  --glass-shadow: 0 30px 70px rgba(0, 0, 0, 0.45);

  --sidebar-bg: rgba(11, 17, 32, 0.92);
  --sidebar-border: rgba(148, 163, 184, 0.2);
  --sidebar-text: #f8fafc;
  --sidebar-muted: rgba(248, 250, 252, 0.6);
  --sidebar-hover: rgba(94, 234, 212, 0.16);

  --shadow-soft: 0 16px 36px rgba(0, 0, 0, 0.35);
  --shadow-medium: 0 28px 60px rgba(0, 0, 0, 0.45);
  --shadow-strong: 0 48px 90px rgba(0, 0, 0, 0.55);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    color-scheme: dark;
    --color-bg: #0b1120;
    --color-surface: rgba(15, 23, 42, 0.78);
    --color-surface-muted: rgba(2, 6, 23, 0.6);
    --color-surface-contrast: rgba(15, 23, 42, 0.92);
    --color-surface-deep: #05070f;
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-border: rgba(148, 163, 184, 0.18);
    --color-accent-soft: rgba(94, 234, 212, 0.2);
    --color-primary: #3b82f6;
    --color-bg-hover: rgba(148, 163, 184, 0.14);
    --color-hover: rgba(148, 163, 184, 0.14);
    --color-input-bg: rgba(94, 234, 212, 0.12);
    --color-input-bg-focus: rgba(94, 234, 212, 0.2);

    --interactive-border: rgba(59, 130, 246, 0.6);
    --interactive-bg: rgba(59, 130, 246, 0.14);
    --interactive-bg-hover: rgba(59, 130, 246, 0.22);
    --interactive-bg-active: rgba(59, 130, 246, 0.32);
    --interactive-text-active: #bfdbfe;

    --glass-bg: rgba(15, 23, 42, 0.7);
    --glass-border: rgba(148, 163, 184, 0.16);
    --glass-shadow: 0 30px 70px rgba(0, 0, 0, 0.45);

    --sidebar-bg: rgba(11, 17, 32, 0.92);
    --sidebar-border: rgba(148, 163, 184, 0.2);
    --sidebar-text: #f8fafc;
    --sidebar-muted: rgba(248, 250, 252, 0.6);
    --sidebar-hover: rgba(94, 234, 212, 0.16);

    --shadow-soft: 0 16px 36px rgba(0, 0, 0, 0.35);
    --shadow-medium: 0 28px 60px rgba(0, 0, 0, 0.45);
    --shadow-strong: 0 48px 90px rgba(0, 0, 0, 0.55);
  }
}

:root[data-preview='true'] {
  --color-bg: #fbe7e7;
  --gradient-primary: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
  --gradient-panel: linear-gradient(140deg, rgba(239, 68, 68, 0.18), rgba(185, 28, 28, 0.14));
  --gradient-mesh:
    radial-gradient(circle at 12% 12%, rgba(248, 113, 113, 0.35), transparent 45%),
    radial-gradient(circle at 88% 8%, rgba(239, 68, 68, 0.3), transparent 45%),
    radial-gradient(circle at 80% 85%, rgba(127, 29, 29, 0.2), transparent 50%);
}

:root[data-preview='true'][data-theme='dark'] {
  --color-bg: #240708;
  --gradient-primary: linear-gradient(135deg, #ef4444 0%, #7f1d1d 100%);
  --gradient-panel: linear-gradient(140deg, rgba(239, 68, 68, 0.22), rgba(127, 29, 29, 0.18));
  --gradient-mesh:
    radial-gradient(circle at 12% 12%, rgba(239, 68, 68, 0.35), transparent 45%),
    radial-gradient(circle at 88% 8%, rgba(127, 29, 29, 0.35), transparent 45%),
    radial-gradient(circle at 80% 85%, rgba(248, 113, 113, 0.2), transparent 50%);
}

@media (prefers-color-scheme: dark) {
  :root[data-preview='true']:not([data-theme='light']) {
    --color-bg: #240708;
    --gradient-primary: linear-gradient(135deg, #ef4444 0%, #7f1d1d 100%);
    --gradient-panel: linear-gradient(140deg, rgba(239, 68, 68, 0.22), rgba(127, 29, 29, 0.18));
    --gradient-mesh:
      radial-gradient(circle at 12% 12%, rgba(239, 68, 68, 0.35), transparent 45%),
      radial-gradient(circle at 88% 8%, rgba(127, 29, 29, 0.35), transparent 45%),
      radial-gradient(circle at 80% 85%, rgba(248, 113, 113, 0.2), transparent 50%);
  }
}