/* style.css — Flipbook Studio design tokens */

:root,
[data-theme='light'] {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);

  /* Spacing (4px system) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Surfaces — crisp white/black palette */
  --color-bg: #f9fafb;
  --color-surface: #ffffff;
  --color-surface-2: #f3f4f6;
  --color-surface-offset: #e5e7eb;
  --color-surface-offset-2: #d1d5db;
  --color-surface-dynamic: #9ca3af;
  --color-divider: #e5e7eb;
  --color-border: #d1d5db;

  /* Text */
  --color-text: #111827;
  --color-text-muted: #4b5563;
  --color-text-faint: #9ca3af;
  --color-text-inverse: #ffffff;

  /* Primary accent — modern black */
  --color-primary: #111827;
  --color-primary-hover: #374151;
  --color-primary-active: #4b5563;
  --color-primary-highlight: #e5e7eb;

  /* Secondary accent — crisp gray */
  --color-gold: #6b7280;
  --color-gold-hover: #4b5563;
  --color-gold-active: #374151;
  --color-gold-highlight: #f3f4f6;

  --color-success: #43703a;
  --color-success-highlight: #d8e4cf;
  --color-error: #9c2a3f;
  --color-error-highlight: #f0d3d8;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 40 / 0.08);
  --shadow-md: 0 6px 16px oklch(0.2 0.02 40 / 0.12);
  --shadow-lg: 0 20px 48px oklch(0.18 0.02 40 / 0.22);

  --content-narrow: 640px;
  --content-default: 1080px;
  --content-wide: 1320px;

  --font-display: 'Gowun Batang', 'Noto Serif KR', Georgia, serif;
  --font-body: 'Pretendard Variable', 'Noto Sans KR', -apple-system, sans-serif;
}

[data-theme='dark'] {
  --color-bg: #111827;
  --color-surface: #1f2937;
  --color-surface-2: #374151;
  --color-surface-offset: #4b5563;
  --color-surface-offset-2: #6b7280;
  --color-surface-dynamic: #9ca3af;
  --color-divider: #374151;
  --color-border: #4b5563;

  --color-text: #f9fafb;
  --color-text-muted: #d1d5db;
  --color-text-faint: #9ca3af;
  --color-text-inverse: #111827;

  --color-primary: #ffffff;
  --color-primary-hover: #f3f4f6;
  --color-primary-active: #e5e7eb;
  --color-primary-highlight: #374151;

  --color-gold: #9ca3af;
  --color-gold-hover: #d1d5db;
  --color-gold-active: #f3f4f6;
  --color-gold-highlight: #374151;

  --color-success: #8fbb7f;
  --color-success-highlight: #2a3524;
  --color-error: #dd8a95;
  --color-error-highlight: #3a2226;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 6px 16px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 20px 48px oklch(0 0 0 / 0.55);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #1b140d;
    --color-surface: #221a12;
    --color-surface-2: #271e15;
    --color-surface-offset: #2c2116;
    --color-surface-offset-2: #362a1b;
    --color-surface-dynamic: #453424;
    --color-divider: #3a2c1d;
    --color-border: #4a3a26;
    --color-text: #ecdfc7;
    --color-text-muted: #b3a184;
    --color-text-faint: #7c6d54;
    --color-text-inverse: #241b12;
    --color-primary: #d98a94;
    --color-primary-hover: #e3a4ac;
    --color-primary-active: #eabfc5;
    --color-primary-highlight: #3a2222;
    --color-gold: #d9ab5c;
    --color-gold-hover: #e3bd7c;
    --color-gold-active: #ecce9c;
    --color-gold-highlight: #3a2e18;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
    --shadow-md: 0 6px 16px oklch(0 0 0 / 0.4);
    --shadow-lg: 0 20px 48px oklch(0 0 0 / 0.55);
  }
}