/* Thrifted Jewelry Hallmark Identifier */
:root {
  --bg: #fbf6ec;
  --bg-soft: #f3ead8;
  --ink: #2b2416;
  --ink-soft: #5a4d33;
  --line: #d9cda9;
  --gold: #8a6a1a;
  --gold-soft: #c9a341;
  --gold-deep: #5e470f;
  --silver: #7a7a7a;
  --white-metal: #b8b8b8;
  --accent: #a07a18;
  --accent-soft: #e7d39a;
  --success: #3f6b3a;
  --warning: #8a4a1a;
  --danger: #8a2a1a;
  --shadow: 0 1px 2px rgba(60, 45, 10, 0.06), 0 8px 24px rgba(60, 45, 10, 0.08);
  --radius: 10px;
  --radius-sm: 6px;
  --max: 1180px;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--gold-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  background: linear-gradient(180deg, #fff8e6 0%, #f6ecd0 100%);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--gold-deep);
  font-family: var(--font-serif);
  font-weight: 700;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-deep);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-title { font-size: 18px; }
.brand-sub { font-size: 12px; color: var(--ink-soft); font-weight: 400; letter-spacing: 0.04em; text-transform: uppercase; }

.site-nav {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 14px;
}
.site-nav a {
  color: var(--ink-soft);
  padding: 6px 4px;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover {
  color: var(--gold-deep);
  border-bottom-color: var(--gold-soft);
  text-decoration: none;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 28px;
  padding: 40px 0 24px;
  align-items: start;
}
.eyebrow {
  margin: 0 0 8px;
  color: var(--gold-deep);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
  margin: 0 0 14px;
  color: var(--ink);
}
.lede {
  font-size: 17px;
  color: var(--ink-soft);
  margin: 0 0 20px;
  max-width: 56ch;
}
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  background: transparent;
  color: var(--ink);
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.05s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--gold-deep);
  color: #fff8e6;
  border-color: var(--gold-deep);
}
.btn-primary:hover { background: #4a3709; border-color: #4a3709; }
.btn-ghost {
  background: transparent;
  color: var(--gold-deep);
  border-color: var(--gold-soft);
}
.btn-ghost:hover { background: var(--accent-soft); }
.btn-small { padding: 6px 10px; font-size: 13px; }

.hero-card {
  background: #fffaf0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.hero-card-label {
  margin: 0 0 4px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-deep);
  font-weight: 700;
}
.hero-card-title {
  font-family: var(--font-serif);
  font-size: 18px;
  margin: 0 0 10px;
  color: var(--ink);
}
.hero-card-list {
  margin: 0 0 10px;
  padding-left: 18px;
  font-size: 14px;
  color: var(--ink-soft);
}
.hero-card-list li { margin-bottom: 4px; }
.hero-card-note {
  margin: 0;
  font-size: 13px;
  color: var(--warning);
  font-style: italic;
}

/* Lookup section */
.lookup-section { padding: 32px 0; }
.lookup-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
  align-items: start;
}
.lookup-panel {
  background: #fffaf0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.lookup-panel h2 {
  font-family: var(--font-serif);
  margin: 0 0 6px;
  font-size: 26px;
}
.panel-lede { color: var(--ink-soft); margin: 0 0 16px; font-size: 14px; }

.lookup-form { display: grid; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}
.hint {
  margin: 0;
  font-size: 12px;
  color: var(--ink-soft);
}
input[type="text"], select, textarea {
  font-family: inherit;
  font-size: 14px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fffdf6;
  color: var(--ink);
  width: 100%;
}
input[type="text"]:focus, select:focus, textarea:focus {
  outline: 2px solid var(--gold-soft);
  outline-offset: 1px;
  border-color: var(--gold);
}
textarea { resize: vertical; }

.presets {
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}
.presets-label { margin: 0 0 8px; font-size: 13px; font-weight: 600; }
.preset-buttons { display: flex; flex-wrap: wrap; gap: 8px; }
.preset {
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fffdf6;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.preset:hover {
  background: var(--accent-soft);
  color: var(--gold-deep);
  border-color: var(--gold-soft);
}

.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 4px;
}

.result {
  margin-top: 16px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: #fffdf6;
  border: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-soft);
}
.result h3 {
  font-family: var(--font-serif);
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 18px;
}
.result .likely { color: var(--success); font-weight: 600; }
.result .caution { color: var(--warning); font-weight: 600; }
.result .warning { color: var(--danger); font-weight: 600; }
.result ul { margin: 8px 0; padding-left: 18px; }
.result li { margin-bottom: 4px; }
.result .empty {
  color: var(--ink-soft);
  font-style: italic;
}

.result-controls {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Side panel */
.side-panel { display: grid; gap: 14px; }
.side-card {
  background: #fffdf6;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}
.side-card h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  margin: 0 0 8px;
  color: var(--ink);
}
.side-list {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  color: var(--ink-soft);
}
.side-list li { margin-bottom: 4px; }
.side-note { font-size: 13px; color: var(--ink-soft); margin: 0 0 8px; }

.history-list {
  list-style: none;
  margin: 0 0 8px;
  padding: 0;
  display: grid;
  gap: 6px;
  max-height: 220px;
  overflow-y: auto;
}
.history-item {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fffaf0;
  cursor: pointer;
}
.history-item:hover { background: var(--accent-soft); }
.history-item .marks { font-weight: 600; color: var(--ink); }
.history-item .meta { color: var(--ink-soft); }
.history-item .delete {
  background: transparent;
  border: 0;
  color: var(--danger);
  cursor: pointer;
  font-size: 12px;
  padding: 0 4px;
}

/* Reference section */
.reference-section { padding: 32px 0; }
.section-lede { color: var(--ink-soft); margin: 0 0 18px; max-width: 70ch; }
.ref-table {
  background: #fffdf6;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 14px;
}
.ref-table summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--ink);
}
.ref-table summary::-webkit-details-marker { display: none; }
.ref-table summary::after {
  content: "+";
  color: var(--gold-deep);
  font-family: var(--font-sans);
  font-size: 18px;
}
.ref-table[open] summary::after { content: "−"; }
.ref-table h3 { margin: 0; font-size: 18px; }
.ref-table table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 14px;
}
.ref-table th, .ref-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.ref-table th {
  background: var(--bg-soft);
  color: var(--gold-deep);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.ref-table tr:last-child td { border-bottom: 0; }

/* Scenarios */
.scenarios-section { padding: 32px 0; }
.scenario {
  background: #fffdf6;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 12px;
}
.scenario h3 {
  font-family: var(--font-serif);
  margin: 0 0 6px;
  font-size: 18px;
  color: var(--ink);
}
.scenario p { margin: 0 0 8px; color: var(--ink-soft); font-size: 14px; }

/* Mistakes */
.mistakes-section { padding: 32px 0; }
.mistake-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.mistake-list li {
  background: #fffdf6;
  border: 1px solid var(--line);
  border-left: 4px solid var(--warning);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 14px;
  color: var(--ink-soft);
}
.mistake-list li strong { color: var(--ink); }

/* Troubleshooting */
.troubleshooting-section { padding: 32px 0; }
.troubleshoot-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: grid;
  gap: 10px;
}
.troubleshoot-list li {
  background: #fffdf6;
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold-soft);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 14px;
  color: var(--ink-soft);
}
.troubleshoot-list li strong { color: var(--ink); }

/* FAQ */
.faq-section { padding: 32px 0; }
.faq {
  background: #fffdf6;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 10px;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
  font-size: 15px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  color: var(--gold-deep);
  font-size: 16px;
}
.faq[open] summary::after { content: "−"; }
.faq p { margin: 8px 0 0; color: var(--ink-soft); font-size: 14px; }

/* Content footer */
.content-footer {
  padding: 24px 0 40px;
  color: var(--ink-soft);
  font-size: 14px;
  border-top: 1px solid var(--line);
  margin-top: 24px;
}
.content-footer p { margin: 0 0 8px; max-width: 70ch; }

/* Footer */
.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  padding: 18px 0;
  margin-top: 24px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--ink-soft);
}
.footer-inner nav { display: flex; gap: 12px; flex-wrap: wrap; }
.footer-inner a { color: var(--ink-soft); }
.footer-inner a:hover { color: var(--gold-deep); }

/* Print */
@media print {
  body { background: #fff; }
  .site-header, .site-footer, .hero-actions, .presets, .form-actions, .result-controls, .side-panel, .content-footer { display: none; }
  .lookup-panel { box-shadow: none; border: 0; padding: 0; }
  .result { border: 0; padding: 0; }
  .hero { grid-template-columns: 1fr; }
  .hero-card { border: 0; padding: 0; }
}

/* Responsive */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .lookup-grid { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  .site-nav { gap: 10px; }
  .hero h1 { font-size: 26px; }
  .lookup-panel { padding: 16px; }
  .preset-buttons { gap: 6px; }
  .preset { font-size: 12px; padding: 5px 8px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}