:root {
  --text-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.8125rem);
  --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 + 0.65vw, 1.375rem);
  --text-xl: clamp(1.375rem, 1.1rem + 1.25vw, 2.125rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.75rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5.5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 7.5rem);

  --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;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-interactive: 240ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 500ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 720px;
  --content-default: 1100px;
  --content-wide: 1320px;

  --font-display: 'Fraunces', 'Georgia', serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

/* LIGHT MODE */
:root,
[data-theme='light'] {
  --color-bg: #F6F3EE;
  --color-surface: #FFFFFF;
  --color-surface-2: #EDE9E0;
  --color-surface-offset: #E4DFD4;
  --color-divider: #DDD8CE;
  --color-border: #CCC7BC;

  --color-text: #14120E;
  --color-text-muted: #6A6258;
  --color-text-faint: #AAA49C;
  --color-text-inverse: #F6F3EE;

  --color-primary: #2559FF;
  --color-primary-hover: #1A46E0;
  --color-primary-highlight: #DCE5FF;

  --color-accent: #CAFF33;
  --color-accent-dark: #8DB800;

  --shadow-xs: 0 1px 2px rgba(20, 18, 14, 0.06);
  --shadow-sm: 0 2px 8px rgba(20, 18, 14, 0.08);
  --shadow-md: 0 8px 28px rgba(20, 18, 14, 0.1);
  --shadow-lg: 0 24px 64px rgba(20, 18, 14, 0.13);
  --grid-line: rgba(20, 18, 14, 0.065);
}

/* DARK MODE */
[data-theme='dark'] {
  --color-bg: #0A0C12;
  --color-surface: #11141D;
  --color-surface-2: #181C27;
  --color-surface-offset: #1E2330;
  --color-divider: #242836;
  --color-border: #2D3244;

  --color-text: #EAE5DB;
  --color-text-muted: #8A8478;
  --color-text-faint: #504C46;
  --color-text-inverse: #0A0C12;

  --color-primary: #6080FF;
  --color-primary-hover: #7B97FF;
  --color-primary-highlight: #1A2348;

  --color-accent: #CAFF33;
  --color-accent-dark: #A0D400;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.6);
  --grid-line: rgba(255, 255, 255, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0A0C12;
    --color-surface: #11141D;
    --color-surface-2: #181C27;
    --color-surface-offset: #1E2330;
    --color-divider: #242836;
    --color-border: #2D3244;
    --color-text: #EAE5DB;
    --color-text-muted: #8A8478;
    --color-text-faint: #504C46;
    --color-text-inverse: #0A0C12;
    --color-primary: #6080FF;
    --color-primary-hover: #7B97FF;
    --color-primary-highlight: #1A2348;
    --grid-line: rgba(255, 255, 255, 0.04);
  }
}

/* ── RESET ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-24);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-surface-2); }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-faint); }

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.04;
  font-weight: 400;
  letter-spacing: -0.02em;
}

p, li, figcaption {
  text-wrap: pretty;
  max-width: 68ch;
}

a { color: inherit; text-decoration: none; }

::selection {
  background: var(--color-primary);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

button { cursor: pointer; background: none; border: none; }

a, button, [role='button'] {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive),
    opacity var(--transition-interactive);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}