/* artifacts-hub design system — "Editorial"
   One token set, two densities:
     body.hub     local gallery (tighter, mono metadata)
     body.public  Worker landing / strip (masthead, generous)
   Fonts: fonts.css (self-hosted). No external requests. */

:root {
  /* palette */
  --paper: #fbf8f2;
  --paper-2: #f3efe6;      /* raised panels on paper */
  --card: #ffffff;
  --ink: #1b1a17;
  --ink-2: #4a4740;        /* body copy on paper */
  --mute: #8a8578;
  --line: #e4dfd3;
  --line-strong: var(--ink);
  --acc: #8b3a2f;          /* terracotta: links, kickers, current */
  --acc-soft: #f1e4e0;
  --ok: #3b6d4a;
  --ok-soft: #e3eee6;
  --warn: #9a6b12;
  --warn-soft: #f6ecd6;

  /* type */
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, system-ui, "Helvetica Neue", sans-serif;
  --mono: "JetBrains Mono", "SF Mono", Menlo, monospace;

  /* scale (public density) */
  --fs-display: clamp(44px, 6vw, 72px);
  --fs-h1: 40px;
  --fs-h2: 26px;
  --fs-title: 21px;
  --fs-body: 15px;
  --fs-small: 12.5px;
  --fs-meta: 11px;
  --lh: 1.55;

  --gap: 32px;
  --gap-card: 40px 32px;
  --maxw: 1080px;
  --radius: 0;
  --shadow-card: 0 1px 0 var(--line);
}

body.hub {
  --fs-h1: 34px;
  --fs-h2: 22px;
  --fs-title: 17px;
  --fs-body: 14px;
  --fs-small: 12px;
  --gap: 24px;
  --gap-card: 28px 24px;
  --maxw: 1180px;
}

* { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font: var(--fs-body)/var(--lh) var(--sans);
  font-feature-settings: "ss01", "cv11";
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--acc); }
::selection { background: var(--acc-soft); }

/* ── type ── */
.t-display { font-family: var(--serif); font-size: var(--fs-display); font-weight: 300; letter-spacing: -.02em; line-height: 1; font-variation-settings: "opsz" 144; }
.t-display em { font-style: italic; font-weight: 600; color: var(--acc); }
h1, .t-h1 { font-family: var(--serif); font-size: var(--fs-h1); font-weight: 300; letter-spacing: -.02em; line-height: 1.05; font-variation-settings: "opsz" 96; }
h1 em, .t-h1 em { font-style: italic; font-weight: 600; color: var(--acc); }
h2, .t-h2 { font-family: var(--serif); font-size: var(--fs-h2); font-weight: 300; letter-spacing: -.01em; line-height: 1.15; }
.t-title { font-family: var(--serif); font-size: var(--fs-title); font-weight: 600; letter-spacing: -.015em; line-height: 1.2; font-variation-settings: "opsz" 48; }
.t-kicker { font: 500 var(--fs-meta)/1.4 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--acc); }
.t-meta { font: 400 var(--fs-small)/1.5 var(--sans); color: var(--mute); }
.t-mono { font: 400 var(--fs-meta)/1.6 var(--mono); color: var(--mute); }
.t-mono b { color: var(--ink); font-weight: 600; }
.t-body { color: var(--ink-2); }

/* ── layout ── */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 44px var(--gap) 80px; }
body.public .wrap { padding-top: 56px; }
.rule { border: 0; border-top: 1px solid var(--line-strong); }
.rule-soft { border: 0; border-top: 1px solid var(--line); }
.section { margin-top: 56px; padding-top: 22px; border-top: 1px solid var(--line-strong); display: flex; align-items: baseline; gap: 14px; }
.section h2 { flex: 1; }
.section .t-meta { white-space: nowrap; }
body.hub .section { margin-top: 40px; padding-top: 16px; }
.masthead + .section { border-top: 0; margin-top: 40px; padding-top: 0; }

/* masthead (public) */
.masthead { text-align: center; padding-bottom: 28px; border-bottom: 1px solid var(--line-strong); }
.masthead .t-kicker { color: var(--mute); }
.masthead h1 { margin-top: 10px; }
.masthead .t-meta { margin-top: 12px; }

/* header (hub) */
.hubhead { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; padding-bottom: 14px; border-bottom: 1px solid var(--line-strong); }
.hubhead .t-mono { text-align: right; }

/* ── controls ── */
.tabs { display: flex; gap: 26px; font: 500 var(--fs-small)/1 var(--sans); letter-spacing: .06em; text-transform: uppercase; }
body.public .tabs { justify-content: center; margin: 22px 0 40px; }
body.hub .tabs { margin: 20px 0 18px; gap: 20px; }
.tab { color: var(--mute); padding: 6px 0; border-bottom: 2px solid transparent; cursor: pointer; background: none; border-top: 0; border-left: 0; border-right: 0; font: inherit; letter-spacing: inherit; text-transform: inherit; }
.tab:hover { color: var(--ink); }
.tab.on { color: var(--ink); border-bottom-color: var(--acc); }
.tab .n { color: var(--mute); margin-left: 4px; font-weight: 400; }

.tools { display: flex; gap: 10px; }
.input, .select, textarea {
  background: var(--card); border: 1px solid var(--line); color: var(--ink);
  padding: 9px 12px; font: var(--fs-small)/1.4 var(--sans); border-radius: var(--radius);
}
.input { flex: 1; }
.input::placeholder { color: var(--mute); }
.input:focus, .select:focus { outline: 2px solid var(--acc); outline-offset: -1px; }
.select { padding-right: 28px; appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%238a8578' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center; }
.check { display: inline-flex; align-items: center; gap: 6px; font: var(--fs-small)/1 var(--sans); color: var(--mute); cursor: pointer; }
.check input { accent-color: var(--acc); margin: 0; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--ink); background: none; color: var(--ink);
  padding: 8px 14px; font: 500 var(--fs-small)/1 var(--sans); letter-spacing: .04em;
  cursor: pointer; border-radius: var(--radius); text-decoration: none;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.primary:hover { background: var(--acc); border-color: var(--acc); }
.btn.danger { border-color: var(--acc); color: var(--acc); }
.btn.danger:hover { background: var(--acc); color: #fff; }
.btn.quiet { border-color: var(--line); color: var(--ink-2); }
.btn.quiet:hover { border-color: var(--ink); background: none; color: var(--ink); }
.btn[disabled] { opacity: .4; pointer-events: none; }

/* ── badges ── */
.badge { display: inline-block; font: 600 10px/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; padding: 4px 7px; border-radius: var(--radius); }
.badge.pub { background: var(--ok-soft); color: var(--ok); }
.badge.acc { background: var(--acc-soft); color: var(--acc); }
.badge.mute { background: var(--paper-2); color: var(--mute); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.ink { background: var(--ink); color: var(--paper); }

/* ── cards (gallery) ── */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: var(--gap-card); }
.card { display: block; color: inherit; min-width: 0; }
.card > * { display: block; }
.card .thumb { aspect-ratio: 16/10; background: var(--card); border: 1px solid var(--line); overflow: hidden; position: relative; box-shadow: var(--shadow-card); }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; filter: saturate(.85); display: block; }
.card .thumb .kind-fallback { position: absolute; inset: 0; display: grid; place-items: center; font: 600 22px var(--serif); color: var(--line); letter-spacing: .05em; }
.card .thumb .badge { position: absolute; top: 10px; right: 10px; }
.card .t-kicker { margin-top: 14px; }
.card .t-title { margin-top: 6px; }
.card:hover .t-title { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; color: var(--ink); }
.card .t-meta { margin-top: 6px; }
body.hub .card .t-kicker { margin-top: 10px; }
body.hub .card .t-meta { font-family: var(--mono); font-size: var(--fs-meta); }

/* preview (artifact page: thumbnail of the selected version, click to open) */
.prev { display: block; position: relative; aspect-ratio: 16/10; background: var(--card); border: 1px solid var(--line); overflow: hidden; box-shadow: var(--shadow-card); }
.prev img { width: 100%; height: 100%; object-fit: cover; object-position: top; filter: saturate(.85); display: block; }
.prev .kind-fallback { position: absolute; inset: 0; display: grid; place-items: center; font: 600 22px var(--serif); color: var(--line); letter-spacing: .05em; }
.prev .lbl { position: absolute; top: 0; left: 0; background: var(--ink); color: var(--paper); font: 600 10px/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; padding: 6px 8px; z-index: 1; }

/* ── lists / timeline ── */
.timeline { list-style: none; }
.timeline li { display: grid; grid-template-columns: 58px 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.timeline .v { font-family: var(--serif); font-size: 20px; font-weight: 600; line-height: 1.2; }
.timeline li.cur .v { color: var(--acc); }
.timeline .d { font: var(--fs-meta)/1.4 var(--sans); color: var(--mute); }
.timeline .n { margin-top: 2px; color: var(--ink-2); line-height: 1.45; }
.timeline .acts { margin-top: 6px; display: flex; gap: 12px; font: 500 var(--fs-meta)/1 var(--sans); letter-spacing: .06em; text-transform: uppercase; }
.timeline .acts a, .timeline .acts button { color: var(--mute); background: none; border: 0; padding: 0; font: inherit; letter-spacing: inherit; text-transform: inherit; cursor: pointer; }
.timeline .acts a:hover, .timeline .acts button:hover { color: var(--acc); }

.rows { border-top: 1px solid var(--line-strong); }
.row { display: grid; align-items: center; gap: 14px; padding: 12px 4px; border-bottom: 1px solid var(--line); color: inherit; }
.row:hover { background: var(--card); }
.row .t-title { font-size: 15px; }
.row.gone { opacity: .55; }

/* key/value rail */
.kv { display: grid; grid-template-columns: 110px 1fr; gap: 6px 12px; font: var(--fs-small)/1.5 var(--sans); }
.kv dt { color: var(--mute); font-size: var(--fs-meta); text-transform: uppercase; letter-spacing: .1em; padding-top: 2px; }
.kv dd { color: var(--ink); word-break: break-word; }
.kv dd.mono { font-family: var(--mono); font-size: var(--fs-meta); }

/* diff */
.diff { font: var(--fs-meta)/1.65 var(--mono); background: var(--card); border: 1px solid var(--line); padding: 12px 14px; overflow: auto; white-space: pre-wrap; }
.diff .add { color: var(--ok); }
.diff .del { color: var(--acc); }
.diff .hunk { color: var(--mute); }

/* toast */
.toast { position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%); background: var(--ink); color: var(--paper); font: var(--fs-small)/1.5 var(--mono); padding: 12px 18px; max-width: 680px; word-break: break-all; display: none; z-index: 20; }
.toast b { color: #cfe8d5; }

/* pager */
.pager { display: flex; justify-content: space-between; align-items: center; margin-top: 18px; }
.pager .pg { display: flex; gap: 4px; }
.pager .pg a { border: 1px solid var(--line); padding: 5px 10px; font: 500 var(--fs-meta)/1 var(--sans); }
.pager .pg a.on { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.pager .pg a.dis { opacity: .3; pointer-events: none; }

/* footer */
.foot { margin-top: 56px; padding-top: 12px; border-top: 1px solid var(--line-strong); display: flex; justify-content: space-between; gap: 16px; }
.foot, .foot a { font: var(--fs-meta)/1.5 var(--sans); color: var(--mute); }
.foot a:hover { color: var(--acc); }

/* empty state */
.empty { padding: 64px 0; text-align: center; color: var(--mute); font-family: var(--serif); font-size: 20px; font-weight: 300; }

/* motion (public landing) */
@keyframes fadeIn { to { opacity: 1; } }
@keyframes liftUp { to { transform: translateY(-28px); } }
@keyframes growRule { to { width: 72px; } }
@media (prefers-reduced-motion: reduce) { * { animation-duration: .01ms !important; animation-delay: 0s !important; } }

/* responsive */
@media (max-width: 720px) {
  :root { --gap: 18px; --gap-card: 28px 18px; --fs-h1: 32px; --fs-h2: 22px; }
  .hubhead { flex-direction: column; align-items: flex-start; }
  .hubhead .t-mono { text-align: left; }
  .tabs { flex-wrap: wrap; gap: 14px; }
}