/* base.css — reset + design tokens */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* 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, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 8rem);

  /* Spacing */
  --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 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

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

  --content-narrow: 640px;
  --content-default: 1080px;
  --content-wide: 1200px;

  --font-display: 'Fraunces', 'Georgia', 'Times New Roman', serif;
  --font-body: 'Work Sans', 'Helvetica Neue', Arial, sans-serif;
}

/* ---- LIGHT MODE (navy + white, matched to logo) ---- */
:root,
[data-theme='light'] {
  --color-bg: #f5f7fb;
  --color-surface: #ffffff;
  --color-surface-2: #fbfcfe;
  --color-surface-offset: #eef1f7;
  --color-surface-offset-2: #e4e9f2;
  --color-surface-dynamic: #dbe3f0;
  --color-divider: #e1e7f1;
  --color-border: #d2dbe9;

  --color-text: #16202f;
  --color-text-muted: #56607a;
  --color-text-faint: #97a0b0;
  --color-text-inverse: #f6f8fc;

  --color-primary: #19224a;
  --color-primary-hover: #121a3a;
  --color-primary-active: #0d1330;
  --color-primary-highlight: #e7eaf3;

  --color-accent: #3c4d8f;
  --color-accent-hover: #2f3e76;
  --color-accent-active: #263261;
  --color-accent-highlight: #e7eaf3;

  --shadow-sm: 0 1px 2px oklch(0.2 0.01 250 / 0.06);
  --shadow-md: 0 4px 14px oklch(0.2 0.02 250 / 0.08);
  --shadow-lg: 0 18px 44px oklch(0.2 0.02 250 / 0.16);
}

/* ---- DARK MODE (deep navy + ivory, tonal steel-navy accent) ---- */
[data-theme='dark'] {
  --color-bg: #0c1124;
  --color-surface: #11173a;
  --color-surface-2: #151c44;
  --color-surface-offset: #161e4a;
  --color-surface-offset-2: #1c2556;
  --color-surface-dynamic: #243068;
  --color-divider: #1d2756;
  --color-border: #2b3768;

  --color-text: #eceff8;
  --color-text-muted: #9ba6c4;
  --color-text-faint: #5f6a8e;
  --color-text-inverse: #11173a;

  --color-primary: #eceff8;
  --color-primary-hover: #ffffff;
  --color-primary-active: #ffffff;
  --color-primary-highlight: #1c2756;

  --color-accent: #9db0e0;
  --color-accent-hover: #b3c2ec;
  --color-accent-active: #c8d4f2;
  --color-accent-highlight: #1c2756;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 4px 14px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 18px 44px oklch(0 0 0 / 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0c1124;
    --color-surface: #11173a;
    --color-surface-2: #151c44;
    --color-surface-offset: #161e4a;
    --color-surface-offset-2: #1c2556;
    --color-surface-dynamic: #243068;
    --color-divider: #1d2756;
    --color-border: #2b3768;
    --color-text: #eceff8;
    --color-text-muted: #9ba6c4;
    --color-text-faint: #5f6a8e;
    --color-text-inverse: #11173a;
    --color-primary: #eceff8;
    --color-primary-hover: #ffffff;
    --color-primary-active: #ffffff;
    --color-primary-highlight: #1c2756;
    --color-accent: #9db0e0;
    --color-accent-hover: #b3c2ec;
    --color-accent-active: #c8d4f2;
    --color-accent-highlight: #1c2756;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
    --shadow-md: 0 4px 14px oklch(0 0 0 / 0.4);
    --shadow-lg: 0 18px 44px oklch(0 0 0 / 0.5);
  }
}

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;
  hanging-punctuation: first last;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

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: 1.12;
  font-family: var(--font-display);
  font-weight: 500;
}

p,
li,
figcaption {
  text-wrap: pretty;
  max-width: 72ch;
}

::selection {
  background: oklch(from var(--color-accent) l c h / 0.28);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  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 {
  color: inherit;
  text-decoration: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

a,
button,
[role='button'],
[role='link'],
input,
textarea,
select {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow 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;
}