/* ============================================================
   calcgeeks — shared stylesheet
   Palette: warm ivory base, deep emerald primary, gold accents
   Type: Fraunces (display) / Manrope (body) / JetBrains Mono (data)
   Signature: faint ledger grid + emerald "readout" totals with gold edge
   ============================================================ */

:root {
  --bg: #f6f1e7;
  --paper: #fffdf7;
  --paper-2: #efe8d8;
  --line: #e2d9c6;
  --line-soft: #ece4d4;
  --ink: #17271f;
  --ink-soft: #4f5d54;
  --ink-dim: #8b9087;
  --accent: #0f6a48;
  --accent-2: #15805a;
  --accent-soft: rgba(15, 106, 72, 0.10);
  --accent-border: rgba(15, 106, 72, 0.26);
  --gold: #a87f2c;
  --gold-2: #c2992f;
  --gold-soft: rgba(168, 127, 44, 0.14);
  --gold-border: rgba(168, 127, 44, 0.42);
  /* result/readout color kept under the --teal name so existing markup still resolves */
  --teal: #0f6a48;
  --teal-soft: rgba(15, 106, 72, 0.16);
  --warn: #b5651d;
  --maxw: 820px;
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  /* ledger-paper signature: faint warm grid + two soft glows */
  background-image:
    linear-gradient(rgba(23,39,31,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23,39,31,0.035) 1px, transparent 1px),
    radial-gradient(circle at 12% -5%, rgba(15,106,72,0.10), transparent 42%),
    radial-gradient(circle at 90% 8%, rgba(168,127,44,0.10), transparent 46%);
  background-size: 32px 32px, 32px 32px, 100% 100%, 100% 100%;
  background-attachment: fixed;
  color: var(--ink);
  font-family: 'Manrope', system-ui, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------- header / nav ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(246, 241, 231, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 40;
}
.nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}
.brand {
  font-family: 'Fraunces', serif;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
.brand em { color: var(--gold); font-style: italic; }
.nav-links { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 6px 11px;
  border-radius: 8px;
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--accent); background: var(--accent-soft); }
.nav-links a.active { color: var(--accent); }

/* ---------- breadcrumb ---------- */
.crumb {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  text-transform: uppercase;
  margin: 26px 0 6px;
}
.crumb a { color: var(--ink-soft); text-decoration: none; }
.crumb a:hover { color: var(--accent); }

/* ---------- typography ---------- */
main { padding-bottom: 64px; }
h1 {
  font-family: 'Fraunces', serif;
  font-weight: 800;
  font-size: clamp(1.9rem, 5vw, 2.9rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 6px 0 14px;
}
h1 em { color: var(--accent); font-style: italic; }
h2 {
  font-family: 'Fraunces', serif;
  font-weight: 700;
  font-size: clamp(1.4rem, 3.4vw, 1.85rem);
  letter-spacing: -0.01em;
  margin: 42px 0 12px;
  scroll-margin-top: 84px;
}
h3 {
  font-size: 1.12rem;
  font-weight: 700;
  margin: 26px 0 8px;
  color: var(--ink);
}
p { margin: 0 0 16px; color: var(--ink-soft); }
.lede { font-size: 1.12rem; color: var(--ink); max-width: 64ch; }
main a { color: var(--accent); }
strong { color: var(--ink); font-weight: 700; }

ul, ol { margin: 0 0 16px; padding-left: 1.25rem; color: var(--ink-soft); }
li { margin-bottom: 7px; }

.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}

/* ---------- hero ---------- */
.hero { padding: 54px 0 18px; }
.hero h1 { font-size: clamp(2.3rem, 6vw, 3.6rem); }

/* ---------- cards / surfaces ---------- */
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}

/* ---------- the calculator widget ---------- */
.calc {
  background: var(--paper);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius);
  padding: 22px;
  margin: 24px 0 8px;
  box-shadow: 0 18px 44px -30px rgba(15,106,72,0.45);
}
.calc-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 16px;
}
.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row .field { flex: 1; min-width: 130px; }

input[type="number"],
input[type="text"],
input[type="date"],
input[type="email"],
select,
textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  padding: 11px 13px;
  transition: border-color .15s, box-shadow .15s;
}
textarea { font-family: 'Manrope', sans-serif; resize: vertical; min-height: 110px; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.seg { display: flex; gap: 8px; flex-wrap: wrap; }
.seg button {
  flex: 1;
  min-width: 90px;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: 'Manrope', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 9px;
  border-radius: 9px;
  cursor: pointer;
  transition: all .15s;
}
.seg button.on {
  background: var(--accent-soft);
  border-color: var(--accent-border);
  color: var(--accent);
}

.btn {
  display: inline-block;
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  padding: 13px;
  cursor: pointer;
  margin-top: 6px;
  transition: background .15s, transform .05s;
}
.btn:hover { background: #0c5a3d; }
.btn:active { transform: translateY(1px); }

/* ---------- readout panel (signature: emerald total, gold edge) ---------- */
.readout {
  margin-top: 18px;
  background: var(--paper-2);
  border: 1px solid var(--gold-soft);
  border-left: 3px solid var(--gold);
  border-radius: 10px;
  padding: 18px;
  min-height: 78px;
}
.readout .ro-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
}
.readout .ro-big {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  color: var(--teal);
  line-height: 1.1;
  margin: 4px 0;
}
.readout .ro-sub { font-size: 0.92rem; color: var(--ink-soft); }
.readout.empty .ro-big { color: var(--ink-dim); }

/* ---------- tables (amortization etc.) ---------- */
.table-scroll { overflow-x: auto; margin: 14px 0; border: 1px solid var(--line); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { padding: 9px 12px; text-align: right; border-bottom: 1px solid var(--line-soft); }
th { background: var(--paper-2); color: var(--ink-soft); font-weight: 600; font-size: 0.8rem; position: sticky; top: 0; }
td:first-child, th:first-child { text-align: left; font-family: 'JetBrains Mono', monospace; color: var(--ink-dim); }
tbody tr:hover { background: var(--accent-soft); }

/* ---------- callouts ---------- */
.note {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 18px 0;
  font-size: 0.94rem;
}
.note.disclaimer { border-left-color: var(--warn); }
.note .note-h {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 5px;
}
.formula {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  color: var(--accent);
  overflow-x: auto;
  margin: 14px 0;
}

/* ---------- FAQ ---------- */
.faq details {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 4px 16px;
  margin-bottom: 10px;
  background: var(--paper);
}
.faq summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--ink);
  padding: 12px 0;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: '+ '; color: var(--gold); font-family: 'JetBrains Mono', monospace; }
.faq details[open] summary::before { content: '– '; }
.faq details p { margin: 0 0 14px; }

/* ---------- category grid (homepage) ---------- */
.cat { margin-top: 40px; }
.cat-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 14px; }
.cat-head h2 { margin: 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.tile {
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  text-decoration: none;
  transition: border-color .15s, transform .12s, box-shadow .15s;
}
.tile:hover {
  border-color: var(--accent-border);
  transform: translateY(-2px);
  box-shadow: 0 14px 32px -26px rgba(15,106,72,0.5);
}
.tile h3 { margin: 0 0 5px; color: var(--ink); }
.tile p { margin: 0; font-size: 0.88rem; color: var(--ink-dim); }

/* ---------- related links ---------- */
.related { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.related a {
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--accent);
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  padding: 6px 14px;
  transition: background .15s;
}
.related a:hover { background: var(--accent-soft); }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding: 34px 0 48px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
}
.site-footer h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 12px;
}
.site-footer a { display: block; color: var(--ink-soft); text-decoration: none; font-size: 0.9rem; margin-bottom: 7px; }
.site-footer a:hover { color: var(--accent); }
.foot-brand { font-family: 'Fraunces', serif; font-weight: 800; font-size: 1.3rem; }
.foot-brand em { color: var(--gold); font-style: italic; }
.disclaimer-bar {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 0.82rem;
  color: var(--ink-dim);
}

/* ---------- misc ---------- */
.muted { color: var(--ink-dim); font-size: 0.9rem; }
hr.div { border: none; border-top: 1px solid var(--line); margin: 34px 0; }

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav { padding: 12px 18px; }
}

/* accessibility */
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}

/* ---------- author / bio card ---------- */
.author-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin: 18px 0;
}
.author-card img.author-photo {
  flex: 0 0 auto;
  width: 94px; height: 94px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--gold-border);
}
.author-ph {
  flex: 0 0 auto;
  width: 94px; height: 94px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft);
  border: 2px solid var(--gold-border);
  font-family: 'Fraunces', serif; font-weight: 800; font-size: 1.9rem;
  color: var(--accent);
  text-align: center; line-height: 1.1;
}
.author-card h3 { margin: 0 0 6px; }
.author-card p { margin: 0 0 8px; }
.author-card p:last-child { margin-bottom: 0; }
.ext-note { font-size: 0.78rem; color: var(--ink-dim); font-family: 'JetBrains Mono', monospace; }
@media (max-width: 520px) {
  .author-card { flex-direction: column; align-items: center; text-align: center; }
}