/* BRIDGET — design-system tokens and component classes. This file is the single source of truth for the brand's look; retune tokens here and every page follows. See readme.md. */

:root {
  /* Ground — a deep, blue-tinted institutional dark. */
  --color-bg: #0e1116;
  --color-surface: #161a21;
  --color-surface-2: #1e232c;
  --color-text: #e8e7e2;
  --color-accent: #42506b;
  --color-accent-2: #42506b;
  --color-divider: color-mix(in srgb, #ffffff 13%, transparent);

  /* Tonal ramps — one shared perceptual lightness scale, so the same step of
     any role carries the same visual weight. On this dark ground the light
     steps (200–400) do the visible work; the base 700 is the brand slate. */
  --color-neutral-100: #f4f5f7;
  --color-neutral-200: #e2e4e9;
  --color-neutral-300: #c6cad2;
  --color-neutral-400: #a3a8b3;
  --color-neutral-500: #7f8590;
  --color-neutral-600: #5f646f;
  --color-neutral-700: #444952;
  --color-neutral-800: #2b2f37;
  --color-neutral-900: #191c22;

  --color-accent-100: #eaedf3;
  --color-accent-200: #ccd4e1;
  --color-accent-300: #aab4c8;
  --color-accent-400: #8794ae;
  --color-accent-500: #667693;
  --color-accent-600: #50607b;
  --color-accent-700: #42506b;
  --color-accent-800: #333e54;
  --color-accent-900: #232b3b;

  --color-accent-2-100: #eaedf3;
  --color-accent-2-200: #ccd4e1;
  --color-accent-2-300: #aab4c8;
  --color-accent-2-400: #8794ae;
  --color-accent-2-500: #667693;
  --color-accent-2-600: #50607b;
  --color-accent-2-700: #42506b;
  --color-accent-2-800: #333e54;
  --color-accent-2-900: #232b3b;

  --font-heading: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-heading-weight: 600;
  --font-body: "Libre Franklin", system-ui, -apple-system, sans-serif;
  /* The wordmark is the body face set in tracked capitals. */
  --font-wordmark: var(--font-body);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;

  --radius-sm: 2px;
  --radius-md: 3px;
  --radius-lg: 6px;

  /* Elevation on a dark ground: ambient darkness plus a faint top edge. */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.40);
  --shadow-md: 0 6px 20px rgba(0,0,0,0.45);
  --shadow-lg: 0 18px 48px rgba(0,0,0,0.55);
}

*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0; background: var(--color-bg); color: var(--color-text);
  font-family: var(--font-body); font-size: 16px; line-height: 1.6; font-weight: 400;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  line-height: 1.14; letter-spacing: -0.01em; margin: 0 0 var(--space-3);
}
h1 { font-size: 50px; }
h2 { font-size: 34px; }
h3 { font-size: 26px; }
h4 { font-size: 20px; }
h5 { font-size: 16px; }
/* h6 is the system's label — small, tracked capitals in the body face. */
h6 {
  font-family: var(--font-body); font-weight: 500; font-size: 12px;
  letter-spacing: 0.16em; text-transform: uppercase; line-height: 1.4;
  color: var(--color-accent-300);
}
p { margin: 0 0 var(--space-3); text-wrap: pretty; }
a { color: var(--color-accent-300); text-decoration: none; text-underline-offset: 3px; }
a:hover { color: var(--color-accent-200); text-decoration: underline; }
img { display: block; max-width: 100%; }
figure { margin: 0; }
figcaption { font-size: 12px; margin-top: var(--space-1); color: var(--color-neutral-400); }
small { font-size: 12px; }
hr, .hr { height: 1px; border: 0; margin: var(--space-6) 0; background: var(--color-divider); }
.text-muted { color: var(--color-neutral-400); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent-400); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent-400) 35%, transparent); }

/* — the wordmark: BRIDGET set in tracked capitals — */
.wordmark {
  font-family: var(--font-wordmark); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.34em; line-height: 1;
}

/* — a thin overline label used above sections and figures — */
.overline {
  display: inline-block; font-family: var(--font-body); font-weight: 500;
  font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--color-accent-300);
}

/* — legacy frame classes, neutralized for BRIDGET's flat, hairline system:
     no registration marks. .duotone is retained as the image treatment. — */
.blueprint { position: relative; }
.blueprint > .corner, .corner { display: none; }
.duotone { position: relative; overflow: hidden; }
.duotone::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: var(--color-accent); mix-blend-mode: color; opacity: 0.9;
}
.duotone > img, .duotone image-slot { filter: grayscale(1) contrast(1.02) brightness(0.92); }

/* ══════════════════════════════════════════════════════════════════════════
   Components — plain CSS on plain HTML, no JavaScript, no build step.
   Each class is documented in readme.md and shown in foundations/ + components/.
   ══════════════════════════════════════════════════════════════════════ */

/* — buttons — */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  cursor: pointer; text-decoration: none;
  font-family: var(--font-body); font-weight: 500; font-size: 14px;
  letter-spacing: 0.04em; line-height: 1.2; color: var(--color-text);
  background: transparent; border: 1px solid transparent;
  padding: 11px var(--space-4); border-radius: var(--radius-md);
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn svg { display: block; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { background: var(--color-accent-700); border-color: var(--color-accent-700); color: #fff; }
.btn-primary:hover { background: var(--color-accent-600); border-color: var(--color-accent-600); }
.btn-primary:active { background: var(--color-accent-800); border-color: var(--color-accent-800); }
.btn-secondary { border-color: var(--color-divider); color: var(--color-text); }
.btn-secondary:hover { background: color-mix(in srgb, #ffffff 6%, transparent); border-color: color-mix(in srgb, #ffffff 28%, transparent); }
.btn-secondary:active { background: color-mix(in srgb, #ffffff 11%, transparent); }
.btn-ghost { color: var(--color-accent-300); border-color: transparent; padding-inline: var(--space-2); }
.btn-ghost:hover { color: var(--color-accent-200); background: color-mix(in srgb, var(--color-accent-400) 12%, transparent); }
.btn-ghost:active { background: color-mix(in srgb, var(--color-accent-400) 20%, transparent); }
.btn-icon { width: 40px; height: 40px; padding: 0; }
.btn-block { width: 100%; }

/* — forms — */
.field > label { display: block; font-size: 12px; letter-spacing: 0.02em; margin-bottom: 6px; color: var(--color-neutral-300); }
.input {
  width: 100%; min-height: 40px; padding: 9px 12px; font: inherit; font-size: 14px;
  color: var(--color-text); caret-color: var(--color-accent-300);
  background: var(--color-surface); border: 1px solid var(--color-divider); border-radius: var(--radius-md);
  transition: border-color 0.15s ease;
}
.input::placeholder { color: var(--color-neutral-500); }
.input:hover { border-color: color-mix(in srgb, #ffffff 26%, transparent); }
.input:focus-visible { border-color: var(--color-accent-400); outline-offset: 0; }
textarea.input { min-height: 96px; resize: vertical; }
.radio { display: inline-flex; align-items: center; gap: var(--space-2); cursor: pointer; font-size: 14px; }
.radio input, .seg-opt input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.radio .dot { width: 16px; height: 16px; flex: none; border-radius: 50%; border: 1.5px solid var(--color-neutral-500); }
.radio:hover .dot { border-color: var(--color-accent-400); }
.radio input:checked + .dot { border-color: var(--color-accent-400); background: var(--color-accent-400); box-shadow: inset 0 0 0 4px var(--color-bg); }
.radio input:focus-visible + .dot { outline: 2px solid var(--color-accent-400); outline-offset: 2px; }
.seg { display: inline-flex; overflow: hidden; border: 1px solid var(--color-divider); border-radius: var(--radius-md); }
.seg-opt { display: inline-flex; align-items: center; gap: var(--space-2); padding: 8px 14px; font-size: 13px; cursor: pointer; }
.seg-opt + .seg-opt { border-left: 1px solid var(--color-divider); }
.seg-opt:has(input:checked) { background: var(--color-accent-700); color: #fff; }
.seg-opt:not(:has(input:checked)):hover { background: color-mix(in srgb, #ffffff 6%, transparent); }
.seg-opt:has(input:focus-visible) { outline: 2px solid var(--color-accent-400); outline-offset: -2px; }

/* — cards: quiet surfaces, hairline-bordered — */
.card {
  display: flex; flex-direction: column; gap: var(--space-2);
  padding: var(--space-6); border-radius: var(--radius-md);
  background: var(--color-surface); border: 1px solid var(--color-divider);
}
.card-kicker { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-accent-300); }
.card-title { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 21px; line-height: 1.2; }
.card-body { margin: 0; font-size: 14px; color: var(--color-neutral-300); flex: 1; }
.card-meta { display: flex; align-items: center; gap: var(--space-2); font-size: 12px; color: var(--color-neutral-400); }
.elev-sm { box-shadow: var(--shadow-sm); }
.elev-md { box-shadow: var(--shadow-md); }
.elev-lg { box-shadow: var(--shadow-lg); }

/* — tags — */
.tag { display: inline-flex; align-items: center; font-size: 11px; letter-spacing: 0.04em; padding: 4px 11px; border-radius: var(--radius-sm); }
.tag-accent { background: color-mix(in srgb, var(--color-accent-400) 18%, transparent); color: var(--color-accent-200); }
.tag-accent-2 { background: color-mix(in srgb, var(--color-accent-400) 18%, transparent); color: var(--color-accent-200); }
.tag-neutral { background: color-mix(in srgb, #ffffff 8%, transparent); color: var(--color-neutral-200); }
.tag-outline { border: 1px solid var(--color-accent-500); color: var(--color-accent-300); }

/* — navigation — */
.nav { display: flex; align-items: center; gap: var(--space-6); padding: var(--space-4) var(--space-6); }
.nav-brand { font-family: var(--font-wordmark); font-weight: 600; text-transform: uppercase; letter-spacing: 0.28em; font-size: 16px; margin-right: auto; }
.nav a { color: var(--color-neutral-300); text-decoration: none; font-size: 14px; letter-spacing: 0.02em; }
.nav a:hover, .nav a[aria-current='page'] { color: var(--color-text); }

/* — tables — */
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-neutral-400); padding: var(--space-3); border-bottom: 1px solid var(--color-divider); }
.table td { padding: var(--space-3); border-bottom: 1px solid color-mix(in srgb, #ffffff 7%, transparent); }
.table tbody tr:hover { background: color-mix(in srgb, #ffffff 4%, transparent); }

/* — dialog — */
.dialog-backdrop { position: fixed; inset: 0; display: grid; place-items: center; padding: var(--space-6); background: color-mix(in srgb, #000000 62%, transparent); }
.dialog { width: min(460px, 100%); display: flex; flex-direction: column; gap: var(--space-3); padding: var(--space-6); border-radius: var(--radius-lg); background: var(--color-surface-2); border: 1px solid var(--color-divider); box-shadow: var(--shadow-lg); }
.dialog-title { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 22px; }
.dialog-body { font-size: 14px; color: var(--color-neutral-300); }
.dialog-actions { display: flex; justify-content: flex-end; gap: var(--space-2); margin-top: var(--space-2); }