:root {
  --bg: #0c0e12;
  --bg-2: #14171d;
  --card: #191d25;
  --border: #2a2f3a;
  --text: #e8eaf0;
  --muted: #9aa3b2;
  --accent: #d9a441;
  --accent-2: #e0722f;
  --danger: #d65a5a;
  --ok: #5ad68a;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(0,0,0,.45);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1c2434 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.hero {
  max-width: 720px;
  margin: 0 auto;
  padding: 96px 24px 64px;
  text-align: center;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .22em;
  font-size: .8rem;
  color: var(--accent);
  font-weight: 600;
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.15;
  margin: 16px 0 16px;
  font-weight: 700;
}
.hero-sub { color: var(--muted); max-width: 560px; margin: 0 auto 28px; }

.btn {
  display: inline-block;
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: transform .12s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #131313; border: none; }
.btn-ghost { color: var(--text); border-color: var(--border); background: var(--card); }
.btn-ghost:hover { border-color: var(--accent); }

.filters {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 8px 16px 32px;
}
.filter {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 9px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: all .15s ease;
}
.filter:hover { color: var(--text); }
.filter.active { color: #131313; background: var(--accent); border-color: var(--accent); }

.grid {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px 64px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 22px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow);
}
.card.featured { border-color: var(--accent); }
.badge {
  display: inline-block; font-size: .7rem; text-transform: uppercase;
  letter-spacing: .1em; padding: 4px 8px; border-radius: 6px; background: var(--accent); color: #131313; font-weight: 600;
}
.card-cat .badge { background: transparent; border: 1px solid var(--border); color: var(--muted); }
.era { color: var(--muted); font-size: .85rem; }

.card-h3 { margin: 2px 0 4px; font-size: 1.15rem; }
.card-des p { color: var(--muted); font-size: .95rem; margin: 0; }
.price { font-size: 1.3rem; font-weight: 700; }
.price.museum { color: var(--muted); font-size: 1.05rem; }
.card-actions { display: flex; gap: 10px; margin-top: auto; padding-top: 10px; }
.card-actions .btn { flex: 1; font-size: .9rem; }

details.teardown {
  margin-top: 6px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-2);
  overflow: hidden;
}
details.teardown summary {
  cursor: pointer; padding: 12px 14px; font-weight: 600; font-size: .92rem;
  user-select: none; list-style: none; display: flex; justify-content: space-between;
}
details.teardown summary::-webkit-details-marker { display: none; }
details.teardown[open] summary { border-bottom: 1px solid var(--border); color: var(--accent); }
.teardown-body { padding: 4px 16px 16px; }
.teardown-body h4 { margin: 14px 0 4px; font-size: .82rem; text-transform: uppercase; letter-spacing: .08em; color: var(--accent-2); }
.teardown-body p { margin: 0 0 4px; font-size: .92rem; color: var(--muted); }
.teardown-body strong { display: block; font-size: .95rem; color: var(--text); }

.how { max-width: 720px; margin: 0 auto; padding: 0 24px 56px; text-align: center; color: var(--muted); }
.how h2 { color: var(--text); }

/* Provenance section + per-card note */
.provenance {
  max-width: 720px; margin: 0 auto; padding: 40px 24px 56px;
  border-top: 1px solid var(--border); color: var(--muted); text-align: center;
}
.provenance h2 { color: var(--text); }
.provenance-note {
  margin-top: 10px; padding: 10px 12px; border-left: 3px solid var(--accent-2);
  background: var(--bg-2); border-radius: 6px; font-size: .85rem; color: var(--muted);
}
.provenance-note strong { color: var(--accent-2); }

/* Checkout modal */
.checkout-actions { margin-top: 12px; }
.checkout-steps { margin: 8px 0 4px; padding-left: 20px; color: var(--muted); font-size: .9rem; }
.checkout-steps li { margin: 4px 0; }
.checkout-steps strong { color: var(--accent); }
.checkout-note { font-size: .82rem; color: var(--muted); border-top: 1px solid var(--border); padding-top: 10px; }
.modal-order { font-size: .9rem; color: var(--muted); }
.escrow-note { font-size: .85rem; color: var(--muted); border-top: 1px solid var(--border); padding-top: 10px; }

.overlay { position: fixed; inset: 0; background: rgba(5,7,9,.72); display: flex; align-items: center; justify-content: center; padding: 24px; z-index: 50; }
.overlay.hidden { display: none; }

.modal {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  max-width: 480px; width: 100%; padding: 26px; position: relative; box-shadow: var(--shadow);
  max-height: 90vh; overflow-y: auto;
}
.modal-close { position: absolute; top: 12px; right: 16px; background: none; border: none; color: var(--muted); font-size: 1.6rem; cursor: pointer; }
.modal-close:hover { color: var(--text); }
.modal-item { color: var(--muted); }
.modal label { display: block; margin: 12px 0; font-size: .9rem; color: var(--muted); }
.modal input,
.modal textarea {
  width: 100%; margin-top: 6px; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text); font: inherit;
}
.modal input:focus,
.modal textarea:focus { outline: none; border-color: var(--accent); }
.form-error { color: var(--danger); font-size: .88rem; }
.success { color: var(--ok); font-weight: 600; }
.hidden { display: none !important; }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #10141a; border: 1px solid var(--accent); color: var(--text);
  padding: 12px 20px; border-radius: 10px; box-shadow: var(--shadow); z-index: 60; font-size: .92rem;
}

.footer {
  text-align: center; padding: 32px 16px 48px; color: var(--muted);
  font-size: .85rem; border-top: 1px solid var(--border); max-width: 1080px; margin: 0 auto;
}

@media (max-width: 640px) {
  .hero { padding-top: 64px; }
  .card-actions { flex-direction: column; }
}

/* ── Upload & identification workflow ───────────────────────────────── */
.card.local { border-color: var(--ok); }
.card-img {
  width: 100%; border-radius: 10px; border: 1px solid var(--border);
  max-height: 240px; object-fit: cover; margin-bottom: 6px;
}

.upload-wrap { max-width: 860px; margin: 0 auto; padding: 0 24px 64px; }
.upload-step { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin: 18px 0; }
.upload-step h2 { margin: 0 0 14px; font-size: 1.15rem; }
.stepnum {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #131313; font-weight: 700; margin-right: 10px;
}
.muted-line { color: var(--muted); font-size: .85rem; }

.dropzone {
  border: 2px dashed var(--border); border-radius: var(--radius);
  padding: 34px; text-align: center; cursor: pointer; transition: border-color .15s ease;
}
.dropzone.dragging { border-color: var(--accent); background: var(--bg-2); }
.dropzone .dz-text { font-weight: 600; }
.dropzone .dz-link { color: var(--accent); text-decoration: underline; }
.dropzone .dz-hint { color: var(--muted); font-size: .8rem; margin-top: 6px; }
.preview { max-width: 320px; max-height: 240px; margin-top: 12px; border-radius: 10px; border: 1px solid var(--border); }

.upload-form { display: block; margin: 12px 0 6px; color: var(--muted); font-size: .9rem; }
.upload-form input, .upload-form select, .upload-form textarea {
  width: 100%; margin-top: 6px; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text); font: inherit;
}
.upload-form input:focus, .upload-form select:focus, .upload-form textarea:focus { outline: none; border-color: var(--accent); }

.status { margin: 14px 0 4px; color: var(--muted); font-size: .9rem; }
.btn-big { display: block; width: 100%; margin-top: 18px; padding: 14px; font-size: 1.05rem; }

.cand-list { display: flex; flex-direction: column; gap: 12px; }
.cand {
  display: flex; align-items: flex-start; gap: 12px; cursor: pointer;
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; padding: 14px;
}
.cand:hover { border-color: var(--muted); }
.cand:has(input:checked) { border-color: var(--accent); background: var(--card); }
.cand input { accent-color: var(--accent); margin-top: 4px; }
.cand-body { flex: 1; }
.cand-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.cand-top strong { font-size: .98rem; }
.cand-score { color: var(--accent); font-size: .8rem; font-weight: 700; white-space: nowrap; }
.cand-meta { color: var(--muted); font-size: .78rem; margin-top: 2px; }
.cand-meta em { color: var(--accent-2); }
.cand-snippet { color: var(--muted); font-size: .88rem; margin: 6px 0; }
.cand-bar { height: 4px; background: var(--border); border-radius: 2px; margin: 2px 0 8px; }
.cand-bar i { display: block; height: 100%; border-radius: 2px; background: linear-gradient(90deg, var(--accent-2), var(--accent)); }
.cand a { color: var(--accent); font-size: .82rem; }

.value-estimate {
  background: var(--bg-2); border: 1px solid var(--accent); border-radius: 10px;
  padding: 14px 16px; margin: 8px 0; font-size: 1.02rem;
}
.value-estimate strong { color: var(--accent); }
.price-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }
.chip {
  padding: 4px 10px; border-radius: 999px; background: var(--card);
  border: 1px solid var(--border); color: var(--accent); font-size: .85rem; font-weight: 600;
}
.evidence { margin: 10px 0; padding-left: 20px; font-size: .92rem; color: var(--muted); }
.evidence li { margin: 8px 0; }
.evidence a { color: var(--text); text-decoration: none; }
.evidence a:hover { color: var(--accent); }
.ev-domain { color: var(--muted); font-size: .8rem; }
.ev-price { color: var(--ok); font-size: .85rem; }
.evidence p { margin: 2px 0 4px; color: var(--muted); font-size: .85rem; }

.export-box { margin-top: 14px; border: 1px solid var(--ok); border-radius: 10px; padding: 14px; }
.export-box textarea {
  width: 100%; margin-top: 8px; padding: 10px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
  font: 0.82rem ui-monospace, SFMono-Regular, Menlo, monospace;
}
.export-box code { background: var(--bg-2); padding: 1px 6px; border-radius: 4px; font-size: .82em; }
.findings { margin: 6px 0; }
/* ── Seek & Trade board ──────────────────────────────────────────────── */
.seek-wrap { max-width: 860px; margin: 0 auto; padding: 0 24px 64px; }
.seek-check { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: .9rem; }
.seek-check input { width: auto; accent-color: var(--accent); margin: 0; }
.seek-h2 { margin: 4px 0 10px; font-size: 1.15rem; }
.seek-count { color: var(--accent); font-size: .95rem; }

.seek-list { display: flex; flex-direction: column; gap: 12px; }
.seek-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; display: flex; flex-direction: column; gap: 8px;
}
.seek-card h3 { margin: 0; font-size: 1.05rem; }
.seek-meta { color: var(--muted); font-size: .82rem; }
.seek-p { color: var(--muted); font-size: .9rem; margin: 0; }
.seek-p em, .match-card em { color: var(--accent-2); }
.seek-contact { color: var(--muted); font-size: .82rem; padding-top: 4px; border-top: 1px dashed var(--border); }
.seek-trade { color: var(--accent); border: 1px solid var(--accent); border-radius: 999px; padding: 1px 8px; font-size: .7rem; font-weight: 700; }
.seek-ok { color: var(--ok); border: 1px solid var(--ok); border-radius: 999px; padding: 1px 8px; font-size: .7rem; font-weight: 700; }
.seek-flags { display: flex; gap: 6px; flex-wrap: wrap; margin: 2px 0; }
.seek-del { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 1rem; align-self: flex-end; }
.seek-del:hover { color: var(--danger); }

.match-h3 { margin: 14px 0 6px; font-size: 1rem; color: var(--text); }
.match-query { color: var(--accent); }
.match-grid { display: flex; flex-direction: column; gap: 10px; }
.match-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; display: flex; flex-direction: column; gap: 6px;
}
.match-card .card-actions { margin-top: 2px; }

.vault-id {
  background: var(--bg-2);
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 14px 16px;
  margin: 8px 0;
  color: var(--muted);
  font-size: .85rem;
  word-break: break-all;
}
.vault-id strong {
  display: block;
  color: var(--accent);
  font: .85rem ui-monospace, SFMono-Regular, Menlo, monospace;
  word-break: break-all;
}
.export-box textarea,
.upload-form textarea,
label.upload-form input[readonly] { font: 0.82rem ui-monospace, SFMono-Regular, Menlo, monospace; }

/* ── Flip cards ─────────────────────────────────────────────────────── */
.flip-card {
  position: relative;
  display: block;
  padding: 0;
  min-height: 500px;
  perspective: 1400px;
  cursor: pointer;
}
.flip-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform .55s cubic-bezier(.25, .55, .35, 1);
}
.flip-card.flipped .flip-inner { transform: rotateY(180deg); }

.flip-face {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
}
.flip-front { overflow: hidden; }
.flip-back { transform: rotateY(180deg); overflow-y: auto; }

.flip-thumb {
  width: 100%;
  height: 172px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-bottom: 0;
}
.flip-hint {
  align-self: center;
  color: var(--muted);
  font-size: .82rem;
  padding: 2px 12px;
  border: 1px dashed var(--border);
  border-radius: 999px;
}
.flip-placeholder {
  height: 96px;
  display: flex; align-items: center; justify-content: center;
  border: 1px dashed var(--border); border-radius: 10px;
  color: var(--muted); font-size: .85rem;
}
.flip-placeholder.big { min-height: 170px; }

/* Back face: full-color cropped macro view */
.stamp-zoom {
  position: relative;
  height: 210px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-2);
}
.zoom-img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}
.flip-card.flipped:hover .zoom-img { transform: scale(1.22); transform-origin: 50% 35%; }
.img-credit {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  background: rgba(8, 10, 14, .78);
  color: var(--muted);
  font-size: .66rem;
  padding: 3px 9px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.stamp-zoom a { color: var(--muted); text-decoration: none; }
.stamp-zoom a:hover { color: var(--accent); }