/* FairBuyback — quiet finance: navy, white, gray only */
:root {
  --navy: #0c2340;
  --navy-mid: #16355c;
  --navy-soft: #e8eef5;
  --bg: #f4f5f7;
  --surface: #ffffff;
  --ink: #0c2340;
  --muted: #5c6770;
  --line: #d8dee6;
  --line-strong: #b8c0cc;
  --wash: #eef1f5;
  --accent: var(--navy);
  --accent-soft: var(--navy-soft);
  /* Fair / okay / low via navy weight — no green / amber / red */
  --fair: #0c2340;
  --fair-bg: #e8eef5;
  --okay: #3d4f63;
  --okay-bg: #eef1f5;
  --low: #6b7785;
  --low-bg: #f4f5f7;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(12, 35, 64, 0.04), 0 6px 18px rgba(12, 35, 64, 0.05);
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--navy-mid); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--navy); }
img { max-width: 100%; }

.wrap { width: min(1080px, calc(100% - 2rem)); margin: 0 auto; }

/* Header */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  flex-wrap: wrap;
}
.logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--navy);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.logo span { color: var(--navy); font-weight: 600; }
.nav-links {
  display: flex;
  gap: 1.15rem;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--navy);
  font-weight: 600;
}

/* Hero */
.hero {
  padding: 2.5rem 0 1.5rem;
}
.hero h1 {
  font-size: clamp(1.7rem, 3.8vw, 2.2rem);
  line-height: 1.22;
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
  max-width: 18ch;
  color: var(--navy);
  font-weight: 700;
}
.hero p.lead {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 1.25rem;
}
.badge-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.5rem; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--navy-soft);
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--line);
}
.badge.warn {
  background: var(--wash);
  color: var(--muted);
  border-color: var(--line-strong);
  font-weight: 600;
}

/* Spot cards */
.spot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin: 1.25rem 0 0.5rem;
}
.spot-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
}
.spot-card .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin: 0 0 0.25rem;
  font-weight: 600;
}
.spot-card .price {
  font-size: 1.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--navy);
}
.spot-card.gold .price,
.spot-card.silver .price { color: var(--navy); }
.spot-meta {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0.5rem 0 0;
}

/* Sections */
section { padding: 1.75rem 0; }
section h2 {
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
  color: var(--navy);
  font-weight: 700;
}
.section-intro {
  color: var(--muted);
  margin: 0 0 1.25rem;
  max-width: 40rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

/* Filters */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.filter-btn {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font: inherit;
  font-size: 0.88rem;
  cursor: pointer;
}
.filter-btn:hover {
  border-color: var(--line-strong);
  color: var(--navy);
}
.filter-btn.active {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}

/* Table */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  min-width: 640px;
}
th, td {
  padding: 0.75rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  background: var(--wash);
  font-weight: 600;
  white-space: nowrap;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: #fafbfc; }
.pct {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-family: var(--mono);
  font-size: 0.9rem;
}
.pct.good { color: var(--fair); }
.pct.mid { color: var(--okay); font-weight: 600; }
.pct.bad { color: var(--low); font-weight: 500; }
.metal-pill {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--line);
}
.metal-pill.gold {
  background: var(--navy-soft);
  color: var(--navy);
}
.metal-pill.silver {
  background: var(--wash);
  color: var(--muted);
}
.muted { color: var(--muted); font-size: 0.85rem; }
.note-cell { color: var(--muted); font-size: 0.8rem; max-width: 12rem; }

/* Calculator */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
@media (max-width: 720px) {
  .calc-grid { grid-template-columns: 1fr; }
}
.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.9rem;
}
.form-row label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
}
.form-row input,
.form-row select {
  font: inherit;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}
.form-row input:focus,
.form-row select:focus {
  outline: 2px solid var(--navy-soft);
  border-color: var(--navy-mid);
}
.form-hint { font-size: 0.8rem; color: var(--muted); margin: 0; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font: inherit;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  padding: 0.7rem 1.1rem;
  cursor: pointer;
  background: var(--navy);
  color: #fff;
}
.btn:hover { background: var(--navy-mid); }
.btn.secondary {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn.secondary:hover { background: var(--wash); }

.result-panel {
  background: var(--wash);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  min-height: 12rem;
}
.result-panel .big {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0.25rem 0;
  font-variant-numeric: tabular-nums;
  color: var(--navy);
}
.verdict {
  display: inline-block;
  font-weight: 700;
  font-size: 0.88rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  margin: 0.5rem 0 0.75rem;
  border: 1px solid var(--line);
}
.verdict.fair { background: var(--fair-bg); color: var(--fair); border-color: var(--line-strong); }
.verdict.okay { background: var(--okay-bg); color: var(--okay); }
.verdict.low { background: var(--low-bg); color: var(--low); }
.range-legend {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.75rem;
}
.range-legend strong { color: var(--ink); }

/* Newsletter */
.newsletter {
  background: var(--navy);
  color: #fff;
  border-radius: calc(var(--radius) + 2px);
  padding: 1.75rem;
  margin: 0.5rem 0 1rem;
  border: 1px solid var(--navy);
}
.newsletter h2 { color: #fff; margin: 0 0 0.4rem; font-weight: 700; }
.newsletter p { color: #c5ced9; margin: 0 0 1rem; max-width: 36rem; }
.signup-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.signup-row input[type="email"] {
  flex: 1 1 220px;
  font: inherit;
  padding: 0.7rem 0.85rem;
  border: 1px solid transparent;
  border-radius: 8px;
  background: #fff;
  color: var(--navy);
}
.signup-row .btn {
  background: #fff;
  color: var(--navy);
}
.signup-row .btn:hover { background: var(--navy-soft); }
.signup-note {
  font-size: 0.8rem;
  color: #a8b4c2;
  margin: 0.75rem 0 0;
}
.signup-msg {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #e8eef5;
}

/* About page */
.prose { max-width: 40rem; }
.prose h1 {
  font-size: 1.85rem;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
  color: var(--navy);
}
.prose h2 { margin-top: 1.75rem; color: var(--navy); }
.prose p, .prose li { color: var(--muted); }
.prose ul { padding-left: 1.2rem; }
.callout {
  background: var(--navy-soft);
  border-left: 4px solid var(--navy);
  padding: 0.9rem 1rem;
  border-radius: 0 8px 8px 0;
  margin: 1.25rem 0;
  color: var(--navy-mid);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.5rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
}
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--navy); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  border: 0;
}