/* ZizzoMoney shared styles.
   Register: calm, plain, trustworthy. Serif body for reading, sans for UI.
   All colors flow through variables so dark mode is automatic. */

:root {
  --bg: #faf9f6;
  --surface: #ffffff;
  --text: #22303c;
  --muted: #5c6873;
  --accent: #166f4d;
  --accent-contrast: #ffffff;
  --accent-soft: #e7f2ec;
  --border: #e1ddd4;
  --chart-contrib: #8aa8bd;
  --chart-growth: #2f9e6e;
  --font-body: Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --font-ui: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181c;
    --surface: #1c2228;
    --text: #e6e4de;
    --muted: #9aa5ad;
    --accent: #4cc38f;
    --accent-contrast: #10231b;
    --accent-soft: #1d2f27;
    --border: #2d353d;
    --chart-contrib: #6d8ba0;
    --chart-growth: #3fae7c;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
}

h1, h2, h3 { line-height: 1.25; }
h1 { font-size: 1.75rem; margin: 0 0 0.35em; }
h2 { font-size: 1.35rem; margin: 1.8em 0 0.5em; }
h3 { font-size: 1.1rem; margin: 1.4em 0 0.4em; }

a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }

code { font-variant-numeric: tabular-nums; }

.num, output, td.num { font-variant-numeric: tabular-nums; }

/* Layout */
.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.1rem;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  font-family: var(--font-ui);
}
.site-header .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
}
.wordmark {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
}
.wordmark span { color: var(--accent); }
.site-nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.1rem;
  font-size: 0.95rem;
}
.site-nav a:hover { color: var(--accent); text-decoration: underline; }

main { padding: 2rem 0 3rem; }

.lede { font-size: 1.15rem; color: var(--muted); margin-top: 0; }

/* Tool directory (homepage) */
.tool-category h2 { margin-top: 1.6em; }
.tool-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.8rem;
}
.tool-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  text-decoration: none;
  color: var(--text);
}
.tool-card:hover { border-color: var(--accent); }
.tool-card strong {
  display: block;
  color: var(--accent);
  font-family: var(--font-ui);
  font-size: 1.02rem;
}
.tool-card em {
  font-style: normal;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Calculator panel */
.calc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.2rem 1.2rem 1.4rem;
  margin: 1.4rem 0;
  font-family: var(--font-ui);
}
.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.9rem 1rem;
}
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 0.25rem;
}
.field input, .field select {
  width: 100%;
  font: inherit;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.55rem 0.6rem;
  min-height: 44px; /* thumb-sized on mobile */
}
.field input:focus, .field select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.results {
  margin-top: 1.3rem;
  border-top: 1px solid var(--border);
  padding-top: 1.1rem;
}
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.8rem;
  margin-bottom: 0.9rem;
}
.stat { background: var(--accent-soft); border-radius: 8px; padding: 0.7rem 0.9rem; }
.stat b {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.stat output {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
}
.result-sentence { font-family: var(--font-body); margin: 0.4rem 0 0; }
.result-note { font-family: var(--font-body); color: var(--muted); font-size: 0.92rem; margin: 0.6rem 0 0; }

.chart-box { margin-top: 1.2rem; }
.chart-box canvas { width: 100%; height: auto; display: block; }
.chart-legend {
  display: flex;
  gap: 1.2rem;
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.4rem;
}
.chart-legend i {
  display: inline-block;
  width: 0.8em; height: 0.8em;
  border-radius: 2px;
  margin-right: 0.35em;
  font-style: normal;
}

/* Content blocks */
.formula {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.8rem 1rem;
  font-size: 1.05rem;
  overflow-x: auto;
}
.var-list { padding-left: 1.2rem; }
.var-list li { margin: 0.25em 0; }

.faq dt { font-weight: 700; margin-top: 1.1em; }
.faq dd { margin: 0.3em 0 0; }

.disclaimer {
  border-left: 3px solid var(--border);
  padding: 0.2rem 0 0.2rem 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  margin: 2.2rem 0;
}

/* Book cards (books page) — text-forward, no cover images */
.book {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.2rem 1.1rem;
  margin: 1rem 0;
}
.book h3 { margin: 0; }
.book .book-meta {
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  margin: 0.15em 0 0.6em;
}
.book p { margin: 0.4em 0 0; }
.book .book-action { font-family: var(--font-ui); font-size: 0.95rem; }
.book .book-action:not(:empty) { margin-top: 0.6em; }

.related h2 { margin-bottom: 0.6em; }
.related .tool-list { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* Ad slots: empty slots render nothing */
.ad-slot:empty { display: none; }
.ad-slot { margin: 1.6rem 0; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 0.9rem;
}
.site-footer .wrap { padding-top: 1.2rem; padding-bottom: 1.6rem; }
.site-footer a { color: var(--muted); }
.site-footer p { margin: 0.35em 0; }

@media (max-width: 420px) {
  h1 { font-size: 1.5rem; }
  .calc { padding: 1rem 0.9rem 1.2rem; }
}