/* Shared: tokens, type, header, tabs, lightbox */

:root {
  --bg: #000;
  --fg: #f0f0f0;
  --line: #e6e6e6;
  --mute: #8c8c8c;
  --dim: #3f3f3f;
  --dim-text: #555;
  --panel: #050505;
  --mono: 'IBM Plex Mono', ui-monospace, Menlo, monospace;
  --sans: 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --gutter: 28px;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
img { display: block; max-width: 100%; }

/* ── Header ─────────────────────────────────────────── */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 18px var(--gutter);
  z-index: 40;
  pointer-events: none;
}
.site-header > * { pointer-events: auto; }

.ident { font-size: 10px; letter-spacing: 0.02em; line-height: 1.55; }
.ident a { text-decoration: none; }
.ident .name { font-weight: 600; }
.ident .name a:hover { text-decoration: underline; text-underline-offset: 3px; }
.ident .sub { color: var(--mute); }

.nav { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; }

.tabs { display: flex; border: 1.5px solid var(--line); }
.tabs a {
  padding: 7px 16px 6px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}
.tabs a + a { border-left: 1.5px solid var(--line); }
.tabs a[aria-current='page'] { background: var(--fg); color: var(--bg); }
.tabs a:not([aria-current='page']):hover { background: #1a1a1a; }

.sound-toggle { font-size: 10px; color: var(--mute); letter-spacing: 0.06em; }
.sound-toggle:hover { color: var(--fg); }

/* registration marks, like a print sheet */
.marks { position: fixed; inset: 0; pointer-events: none; z-index: 1; }
.marks span { position: absolute; font-size: 12px; color: #6a6a6a; line-height: 1; transform: translate(-50%, -50%); }

/* ── Pills ─────────────────────────────────────────── */

.pill {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 8px;
  font-size: 10px;
  line-height: 17px;
  white-space: nowrap;
}
.pill.ghost { border-style: dashed; color: var(--mute); border-color: var(--mute); }

/* placeholder for material still to come */
.todo {
  border: 1px dashed #666; color: var(--mute);
  padding: 8px 10px; font-size: 11px; margin: 10px 0;
}
.todo b { color: var(--fg); font-weight: 500; margin-right: 6px; }

/* ── Lightbox ──────────────────────────────────────── */

.lightbox {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(0, 0, 0, 0.96);
  display: none;
  align-items: center; justify-content: center;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: calc(100vw - 140px); max-height: calc(100vh - 110px); object-fit: contain; }
.lightbox .lb-bar {
  position: absolute; left: var(--gutter); right: var(--gutter); bottom: 18px;
  display: flex; justify-content: space-between; font-size: 11px; color: var(--mute);
}
.lightbox .lb-close { position: absolute; top: 18px; right: var(--gutter); font-size: 11px; letter-spacing: 0.08em; }
.lightbox .lb-prev, .lightbox .lb-next {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%;
}
.lightbox .lb-prev { left: var(--gutter); }
.lightbox .lb-next { right: var(--gutter); }
.lightbox button:hover { background: #1a1a1a; }

@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .ident .sub { display: none; }
  .tabs a { padding: 6px 11px 5px; font-size: 11px; }
  .lightbox img { max-width: calc(100vw - 32px); }
  .lightbox .lb-prev, .lightbox .lb-next { top: auto; bottom: 48px; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}