/* ============================================================
   STRUAN ADVISORY — base.css
   Design tokens: type scale, spacing, custom navy/cream palette,
   and the mandatory base stylesheet reset.
   ============================================================ */

:root {
  /* ---- Fluid 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(2.75rem, 0.5rem + 6vw, 6.5rem);

  /* ---- 4px spacing 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;

  /* ---- Radius ---- */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  /* ---- Transitions ---- */
  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  /* ---- Content widths ---- */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;
}

/* ============================================================
   STRUAN PALETTE — deep navy + warm cream, muted bronze accent.
   Derived from the Struan capability statement.
   ============================================================ */

:root,
[data-theme='light'] {
  /* Surfaces (warm cream / paper) */
  --color-bg: #f6f3ec;
  --color-surface: #faf8f2;
  --color-surface-2: #ffffff;
  --color-surface-offset: #efeade;
  --color-surface-offset-2: #e7e0d0;
  --color-surface-dynamic: #ddd3ba;
  --color-divider: #ddd5c2;
  --color-border: #cfc4a9;

  /* Text (ink navy) */
  --color-text: #1a2436;
  --color-text-muted: #4f5a6c;
  --color-text-faint: #8f97a3;
  --color-text-inverse: #f6f3ec;

  /* Primary accent (Struan Navy) */
  --color-primary: #1c3457;
  --color-primary-hover: #12253e;
  --color-primary-active: #0b1a2d;
  --color-primary-highlight: #dde3ec;

  /* Secondary accent (warm bronze — pull-quotes, dividers, sparingly) */
  --color-warning: #8a5a34;
  --color-warning-hover: #6f4728;
  --color-warning-active: #543520;
  --color-warning-highlight: #e9dccb;

  /* Invariant ink navy — always-dark band backgrounds (stats, CTA, footer). Does NOT flip with theme. */
  --color-ink: #1c3457;
  --color-ink-deep: #0b1a2d;

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 250 / 0.08);
  --shadow-md: 0 6px 20px oklch(0.2 0.02 250 / 0.1);
  --shadow-lg: 0 18px 44px oklch(0.2 0.02 250 / 0.16);
}

[data-theme='dark'] {
  --color-bg: #0f1622;
  --color-surface: #131b29;
  --color-surface-2: #17202f;
  --color-surface-offset: #1b2534;
  --color-surface-offset-2: #212c3d;
  --color-surface-dynamic: #2a3548;
  --color-divider: #263143;
  --color-border: #33415a;

  --color-text: #e9e6dc;
  --color-text-muted: #a2acbd;
  --color-text-faint: #667289;
  --color-text-inverse: #0f1622;

  --color-primary: #90aed0;
  --color-primary-hover: #b0c7e0;
  --color-primary-active: #c9d8ea;
  --color-primary-highlight: #223349;

  --color-warning: #cf9d6c;
  --color-warning-hover: #ddb384;
  --color-warning-active: #e8c8a1;
  --color-warning-highlight: #3a2f22;

  --color-ink: #1c3457;
  --color-ink-deep: #0b1a2d;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 6px 20px oklch(0 0 0 / 0.35);
  --shadow-lg: 0 18px 44px oklch(0 0 0 / 0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0f1622;
    --color-surface: #131b29;
    --color-surface-2: #17202f;
    --color-surface-offset: #1b2534;
    --color-surface-offset-2: #212c3d;
    --color-surface-dynamic: #2a3548;
    --color-divider: #263143;
    --color-border: #33415a;
    --color-text: #e9e6dc;
    --color-text-muted: #a2acbd;
    --color-text-faint: #667289;
    --color-text-inverse: #0f1622;
    --color-primary: #90aed0;
    --color-primary-hover: #b0c7e0;
    --color-primary-active: #c9d8ea;
    --color-primary-highlight: #223349;
    --color-warning: #cf9d6c;
    --color-warning-hover: #ddb384;
    --color-warning-active: #e8c8a1;
    --color-warning-highlight: #3a2f22;
    --color-ink: #1c3457;
    --color-ink-deep: #0b1a2d;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
    --shadow-md: 0 6px 20px oklch(0 0 0 / 0.35);
    --shadow-lg: 0 18px 44px oklch(0 0 0 / 0.45);
  }
}

/* ============================================================
   BASE RESET / MANDATORY STYLESHEET
   ============================================================ */

*,
*::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;
  hanging-punctuation: first last;
  scroll-padding-top: var(--space-16);
  overflow-x: hidden;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body, sans-serif);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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: 1.15;
}
p,
li,
figcaption {
  text-wrap: pretty;
  max-width: 72ch;
}

::selection {
  background: oklch(from var(--color-primary) l c h / 0.25);
  color: var(--color-text);
}

: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;
}
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;
}