:root {
  --bg: #f7f5f2;
  --surface: #ffffff;
  --border: #e4ddd3;
  --text: #24201b;
  --muted: #79706230;
  --muted-text: #766c5f;
  --accent: #b5652a;
  --accent-ink: #ffffff;
  --primary: #24201b;
  --primary-ink: #ffffff;
  --profit: #2f6d3a;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17140f;
    --surface: #221e18;
    --border: #3a332a;
    --text: #f1ece3;
    --muted-text: #b3a892;
    --accent: #e08a45;
    --accent-ink: #1a1208;
    --primary: #f1ece3;
    --primary-ink: #17140f;
    --profit: #6ecb7f;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  line-height: 1.5;
}

.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }

.topbar { border-bottom: 1px solid var(--border); background: var(--surface); position: sticky; top: 0; z-index: 5; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; }
.brand { font-weight: 700; font-size: 1.1rem; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }

.badge { background: var(--profit); color: white; font-size: 0.7rem; font-weight: 700; padding: 3px 8px; border-radius: 999px; letter-spacing: 0.04em; }
.hidden { display: none !important; }

.hero { padding: 40px 0 20px; }
.hero h1 { font-size: 1.9rem; margin: 0 0 8px; }
.hero p { color: var(--muted-text); max-width: 60ch; margin: 0; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin-bottom: 20px; }
.card h2 { margin-top: 0; font-size: 1.15rem; }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 0.85rem; color: var(--muted-text); margin-bottom: 4px; }
.field input, .field select {
  width: 100%; padding: 9px 10px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg); color: var(--text); font-size: 0.95rem;
}
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.btn { border: none; border-radius: 8px; padding: 10px 16px; font-size: 0.9rem; font-weight: 600; cursor: pointer; text-decoration: none; display: inline-block; text-align: center; }
.btn-primary { background: var(--primary); color: var(--primary-ink); width: 100%; }
.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-secondary { background: var(--bg); border: 1px solid var(--border); color: var(--text); }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-sm { padding: 6px 10px; font-size: 0.8rem; }
.btn-block { display: block; width: 100%; margin-top: 16px; }
.file-btn { cursor: pointer; }

.muted { color: var(--muted-text); font-size: 0.9rem; }
.small { font-size: 0.78rem; }

.price-hero { text-align: center; padding: 16px 0 20px; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.price-hero-label { color: var(--muted-text); font-size: 0.85rem; }
.price-hero-value { font-size: 2.4rem; font-weight: 800; }

table.breakdown { width: 100%; border-collapse: collapse; }
table.breakdown td { padding: 7px 0; border-bottom: 1px dashed var(--border); }
table.breakdown td:last-child { text-align: right; font-variant-numeric: tabular-nums; }
table.breakdown tr.total td { font-weight: 700; color: var(--profit); border-bottom: none; padding-top: 10px; }

.fee-note { font-size: 0.8rem; color: var(--muted-text); }
.actions { display: flex; gap: 10px; margin-top: 14px; }
.actions .btn { flex: 1; }

.saved-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.saved-actions { display: flex; gap: 8px; }
table#saved-table { width: 100%; border-collapse: collapse; margin-top: 14px; }
table#saved-table th, table#saved-table td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); font-size: 0.88rem; }
table#saved-table td.num { text-align: right; }
table#saved-table button.link-btn { background: none; border: none; color: var(--accent); cursor: pointer; font-size: 0.85rem; padding: 0; }

.fee-reference ul { padding-left: 20px; color: var(--muted-text); font-size: 0.9rem; }

.footer { padding: 30px 0 50px; color: var(--muted-text); font-size: 0.82rem; }

.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 20; padding: 20px; }
.modal-inner { background: var(--surface); border-radius: var(--radius); padding: 28px; max-width: 400px; width: 100%; position: relative; border: 1px solid var(--border); }
.modal-close { position: absolute; top: 12px; right: 14px; background: none; border: none; font-size: 1.4rem; cursor: pointer; color: var(--muted-text); }
.pro-list { padding-left: 20px; }
.pro-list li { margin-bottom: 6px; }

.unlock-section { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--border); }
.unlock-row { display: flex; gap: 8px; }
.unlock-row input { flex: 1; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); }
#unlock-status.ok, .auth-gate .ok { color: var(--profit); }
#unlock-status.err, .auth-gate .err { color: #c0392b; }

/* ---------- auth gate: nothing renders until signed in ---------- */
#app-shell { display: block; }
.pre-auth #app-shell { display: none; }
.auth-gate { display: none; }
.pre-auth .auth-gate {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 20px; background: var(--bg);
}
.auth-gate-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; max-width: 380px; width: 100%; text-align: center;
}
.auth-gate-icon { font-size: 2.4rem; margin-bottom: 6px; }
.auth-gate-card h1 { font-size: 1.3rem; margin: 0 0 10px; }
.auth-gate-card p { margin-bottom: 18px; }
.auth-gate-card .btn-block { margin-top: 0; }

@media print {
  .topbar, .footer, #calc-form, .fee-reference, .actions, .saved-actions, #save-btn, #print-btn, .card:has(#calc-form) { display: none !important; }
  body { background: white; }
  .card { border: none; padding: 0; }
  .grid { grid-template-columns: 1fr; }
}