/* SimpleCAGR: shared styles (generated pages link this one file) */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ─── LIGHT theme (default) ─── */
:root {
  --bg:          #f7f5ef;    /* warm off-white, like aged paper */
  --bg-tint:     #eae6da;
  --surface:     #ffffff;
  --surface2:    #f4f1e9;
  --border:      rgba(20,40,30,0.08);
  --border2:     rgba(20,40,30,0.14);
  --text:        #0f1f17;
  --text2:       #2f3a33;
  --muted:       #6b7a70;

  --green:       #047857;    /* deep money green */
  --green2:      #065f46;    /* darker */
  --green-soft:  #d1fae5;
  --green-tint:  rgba(4,120,87,0.08);
  --green-glow:  rgba(4,120,87,0.18);

  --amber:       #b45309;    /* accent for linear comparison */
  --amber-soft:  rgba(180,83,9,0.08);

  --error:       #b91c1c;
  --error-soft:  rgba(185,28,28,0.08);

  --shadow-sm:   0 1px 2px rgba(20,40,30,0.04);
  --shadow:      0 4px 20px rgba(20,40,30,0.06);
  --shadow-lg:   0 12px 40px rgba(20,40,30,0.10);
  --radius:      14px;
  --radius-sm:   10px;
  --radius-xs:   8px;
}

/* ─── DARK theme ─── */
html.dark {
  --bg:          #14120e;    /* warm near-black, slight brown */
  --bg-tint:     #1a1814;
  --surface:     #1e1c17;    /* warm dark surface */
  --surface2:    #26231d;
  --border:      rgba(255,245,220,0.06);
  --border2:     rgba(255,245,220,0.12);
  --text:        #f0ebdf;    /* warm off-white */
  --text2:       #c9c2b1;
  --muted:       #8a8272;

  --green:       #6ba888;    /* muted sage money green */
  --green2:      #84c4a3;    /* softer highlight */
  --green-soft:  rgba(107,168,136,0.18);
  --green-tint:  rgba(107,168,136,0.10);
  --green-glow:  rgba(107,168,136,0.25);

  --amber:       #d4a35c;    /* warm desaturated gold */
  --amber-soft:  rgba(212,163,92,0.10);

  --error:       #e07a6a;
  --error-soft:  rgba(224,122,106,0.10);

  --shadow-sm:   0 1px 2px rgba(0,0,0,0.3);
  --shadow:      0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg:   0 12px 40px rgba(0,0,0,0.55);
}

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
  transition: background 0.3s, color 0.3s;
}

/* Subtle paper-texture feel in light mode */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 800px 500px at 15% -10%, var(--green-tint), transparent),
    radial-gradient(ellipse 600px 400px at 90% 20%, var(--green-tint), transparent);
  pointer-events: none;
  z-index: 0;
  opacity: 0.7;
}

/* ─── Top nav ─── */
.topbar {
  position: relative;
  z-index: 10;
  max-width: 920px;
  margin: 0 auto;
  padding: 22px 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: var(--green);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
html.dark .brand-mark { background: #2d4a3c; border: 1px solid var(--green); }

.brand-mark svg { width: 18px; height: 18px; }

.brand .brand-text { font-weight: 700; }
.brand strong { font-weight: 700; color: var(--green); }

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border2);
  border-radius: 100px;
  padding: 7px 14px;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text2);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: all 0.2s;
}
.theme-toggle:hover { border-color: var(--green); color: var(--green); }
.theme-toggle svg { width: 14px; height: 14px; }

/* ─── Page container ─── */
.page {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}

/* ─── Hero / header ─── */
header.hero { text-align: center; margin-bottom: 44px; padding-top: 16px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--green-tint);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 22px;
}
.eyebrow::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px var(--green-tint);
}

h1 {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: clamp(2.4rem, 6.2vw, 4rem);
  font-weight: 700;
  font-variation-settings: "opsz" 96;
  letter-spacing: -0.035em;
  line-height: 1;
  margin-bottom: 18px;
  color: var(--text);
}
h1 em {
  font-style: normal;
  color: var(--green);
  font-weight: 700;
}

.subtitle {
  color: var(--text2);
  font-size: 1.02rem;
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ─── Calculator card ─── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}

.card.elevated { box-shadow: var(--shadow-lg); }

/* ─── Mode tabs ─── */
.mode-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 26px;
}

.mode-tab {
  display: block;
  text-align: center;
  text-decoration: none;
  padding: 11px 8px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: 'Inter', sans-serif;
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s;
  white-space: nowrap;
}
.mode-tab:hover:not(.active) { color: var(--text); }
.mode-tab.active {
  background: var(--surface);
  color: var(--green);
  box-shadow: var(--shadow-sm);
}

/* ─── Input grid ─── */
.inputs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 22px;
}

.input-group { display: flex; flex-direction: column; gap: 7px; }
.input-group.full { grid-column: 1 / -1; }

label {
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text2);
}

.input-wrap { position: relative; }

.input-prefix, .input-suffix {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.92rem;
  color: var(--muted);
  pointer-events: none;
  font-weight: 500;
}
.input-prefix { left: 14px; }
.input-suffix { right: 14px; }

input[type="number"],
input[type="text"].num-input {
  width: 100%;
  background: var(--surface2);
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  padding: 13px 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  -moz-appearance: textfield;
}
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"]::placeholder,
input[type="text"].num-input::placeholder { color: var(--muted); opacity: 0.55; }

.has-prefix input,
.has-prefix input[type="text"].num-input { padding-left: 34px; }
.has-suffix input,
.has-suffix input[type="text"].num-input { padding-right: 44px; }

input:focus {
  border-color: var(--green);
  background: var(--surface);
  box-shadow: 0 0 0 3px var(--green-tint);
}

/* Period toggle */
.period-toggle { display: flex; gap: 6px; margin-top: 6px; }
.period-btn {
  padding: 6px 14px;
  background: transparent;
  border: 1px solid var(--border2);
  border-radius: 6px;
  color: var(--muted);
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}
.period-btn:hover { color: var(--text); }
.period-btn.active {
  background: var(--green-tint);
  border-color: var(--green);
  color: var(--green);
}

/* Calculate button */
.calc-btn {
  width: 100%;
  padding: 15px;
  background: var(--green);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 1px 0 rgba(255,255,255,0.15) inset, 0 4px 12px var(--green-glow);
}
.calc-btn:hover { background: var(--green2); transform: translateY(-1px); box-shadow: 0 1px 0 rgba(255,255,255,0.15) inset, 0 8px 20px var(--green-glow); }
.calc-btn:active { transform: translateY(0); }
html.dark .calc-btn { background: #2d4a3c; color: var(--text); border: 1px solid var(--green); }
html.dark .calc-btn:hover { background: #365847; }

.error-msg {
  display: none;
  margin-top: 12px;
  background: var(--error-soft);
  border: 1px solid var(--error);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  font-size: 0.88rem;
  color: var(--error);
}
.error-msg.visible { display: block; }

/* ─── Results ─── */
.results { display: none; animation: fadeUp 0.4s cubic-bezier(0.2, 0.8, 0.3, 1) both; }
.results.visible { display: block; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.result-hero {
  background: var(--green);
  background-image: linear-gradient(135deg, var(--green) 0%, var(--green2) 100%);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  margin-bottom: 16px;
  box-shadow: var(--shadow-lg);
  color: #fff;
  position: relative;
  overflow: hidden;
}
html.dark .result-hero {
  background-image: linear-gradient(135deg, #2d4a3c 0%, #1f3a2e 100%);
  color: #f0ebdf;
  border: 1px solid var(--border2);
}
html.dark .result-hero .result-label { color: var(--green2); }
html.dark .result-hero .result-value { color: var(--green2); }
html.dark .result-hero .result-sub { color: var(--text2); }
/* Decorative growth curve in corner */
.result-hero::after {
  content: '';
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 220px;
  height: 220px;
  background:
    radial-gradient(circle at center, rgba(255,255,255,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.result-label {
  font-family: 'Inter', sans-serif;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  margin-bottom: 12px;
}

.result-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(2.6rem, 7.5vw, 4.4rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.result-sub {
  color: rgba(255,255,255,0.88);
  font-size: 0.95rem;
  max-width: 420px;
  margin: 0 auto;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.stat-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: left;
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.stat-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}
.stat-value.up { color: var(--green); }

/* ─── Chart ─── */
.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 22px 18px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}

.chart-title {
  font-family: 'Fraunces', serif;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
}

.chart-legend { display: flex; gap: 14px; }
.legend-item {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.78rem;
  color: var(--text2);
  font-weight: 500;
}
.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.chart-area { position: relative; width: 100%; }

/* ─── Breakdown table ─── */
.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.table-title {
  font-family: 'Fraunces', serif;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border2);
  border-radius: 8px;
  padding: 7px 12px;
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: all 0.18s;
}
.copy-btn:hover { border-color: var(--green); color: var(--green); }
.copy-btn.copied { border-color: var(--green); color: var(--green); background: var(--green-tint); }
.copy-btn svg { width: 13px; height: 13px; }

.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th {
  text-align: left;
  font-family: 'Inter', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}
th:not(:first-child), td:not(:first-child) { text-align: right; }

td {
  padding: 12px 8px;
  border-bottom: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--text);
}
tr:last-child td { border-bottom: none; }
.td-up { color: var(--green); }

/* ─── SEO content sections ─── */
.seo-section {
  margin-top: 72px;
  padding-top: 8px;
}

.section-eyebrow {
  font-family: 'Inter', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 14px;
  text-align: center;
}

.section-title {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  font-variation-settings: "opsz" 72;
  letter-spacing: -0.025em;
  color: var(--text);
  text-align: center;
  margin-bottom: 48px;
  line-height: 1.1;
}
.section-title em { font-style: normal; color: var(--green); font-weight: 700; }


.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.info-card h2, .info-card h3 {
  font-family: 'Fraunces', serif;
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.25;
}

.info-card p {
  color: var(--text2);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 10px;
}
.info-card p:last-child { margin-bottom: 0; }

.info-card ul, .info-card ol {
  color: var(--text2);
  font-size: 0.95rem;
  line-height: 1.65;
  padding-left: 20px;
}
.info-card li { margin-bottom: 6px; }

.info-card strong { color: var(--text); font-weight: 600; }

/* Formula display */
.formula {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  margin: 14px 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.02rem;
  color: var(--text);
  text-align: center;
  letter-spacing: 0;
}
.formula .fv { color: var(--green); font-weight: 600; }
.formula sup { font-size: 0.72em; vertical-align: super; }

.example-box {
  background: var(--green-tint);
  border-left: 3px solid var(--green);
  border-radius: 6px;
  padding: 14px 16px;
  margin: 12px 0;
  font-size: 0.9rem;
  color: var(--text2);
}
.example-box strong { color: var(--green); }

/* FAQ */
.faq-list { max-width: 760px; margin: 0 auto; }

details.faq {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  padding: 0;
  overflow: hidden;
  transition: box-shadow 0.2s;
}
details.faq[open] { box-shadow: var(--shadow); }

details.faq summary {
  padding: 18px 22px;
  cursor: pointer;
  font-family: 'Fraunces', serif;
  font-size: 1.08rem;
  font-weight: 500;
  color: var(--text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}
details.faq summary::-webkit-details-marker { display: none; }

details.faq summary::after {
  content: '+';
  color: var(--green);
  font-size: 1.4rem;
  font-weight: 400;
  flex-shrink: 0;
  transition: transform 0.2s;
  font-family: 'Inter', sans-serif;
  line-height: 1;
}
details.faq[open] summary::after { transform: rotate(45deg); }

details.faq .faq-body {
  padding: 0 22px 20px;
  color: var(--text2);
  font-size: 0.94rem;
  line-height: 1.65;
}
details.faq .faq-body p { margin-bottom: 8px; }
details.faq .faq-body p:last-child { margin-bottom: 0; }

/* CTA strip */
.cta-strip {
  background: var(--green);
  background-image: linear-gradient(135deg, var(--green) 0%, var(--green2) 100%);
  border-radius: var(--radius);
  padding: 38px 28px;
  text-align: center;
  margin-top: 48px;
  color: #fff;
  box-shadow: var(--shadow-lg);
}
html.dark .cta-strip {
  background-image: linear-gradient(135deg, #2d4a3c 0%, #1f3a2e 100%);
  color: var(--text);
  border: 1px solid var(--border2);
}
html.dark .cta-strip p { color: var(--text2); }
html.dark .cta-strip button { background: var(--green2); color: #14120e; }
html.dark .cta-strip button:hover { background: var(--green); color: #14120e; }
.cta-strip h3 {
  font-family: 'Bricolage Grotesque', sans-serif;
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 8px;
}
.cta-strip p {
  color: rgba(255,255,255,0.9);
  font-size: 0.96rem;
  max-width: 460px;
  margin: 0 auto 22px;
}
.cta-strip button {
  background: #fff;
  color: var(--green2);
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.cta-strip button:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(0,0,0,0.2); }

/* ─── Footer ─── */
footer {
  margin-top: 64px;
  padding: 32px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.86rem;
  border-top: 1px solid var(--border);
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
}
footer strong { color: var(--text); font-weight: 600; }
footer .disclaimer { font-size: 0.78rem; margin-top: 10px; opacity: 0.85; line-height: 1.55; max-width: 640px; margin-left: auto; margin-right: auto; }
.footer-nav { margin-bottom: 14px; display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap; }
.footer-nav a { color: var(--muted); text-decoration: none; font-size: 0.86rem; transition: color 0.15s; }
.footer-nav a:hover { color: var(--green); }
.footer-nav span { color: var(--border2); }

/* ─── Mobile ─── */
@media (max-width: 680px) {
  .page { padding: 32px 18px 48px; }
  .card { padding: 22px 18px; }
  .inputs-grid { grid-template-columns: 1fr; gap: 14px; }
  .input-group.full { grid-column: 1; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .stats-row .stat-box:last-child { grid-column: 1 / -1; }
  .info-grid { grid-template-columns: 1fr; }
  .result-hero { padding: 30px 18px; }
  .mode-tab { font-size: 0.78rem; padding: 10px 4px; }
  .topbar { padding: 18px 18px 0; }
  .brand { font-size: 1.1rem; }
  .seo-section { margin-top: 56px; }
  .section-title { margin-bottom: 32px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ═══════════════════════════════════════════════════════════
   Multi-page additions (Sprints 1 to 2)
   ═══════════════════════════════════════════════════════════ */

/* Skip link */
.skip-link { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--surface); color: var(--text); padding: 8px 14px; border-radius: 8px; border: 1px solid var(--green); }
.skip-link:focus { left: 16px; }

/* Visible keyboard focus everywhere */
a:focus-visible, button:focus-visible, summary:focus-visible, select:focus-visible {
  outline: 2px solid var(--green); outline-offset: 2px; border-radius: 6px;
}

/* Top bar right-hand cluster */
.topbar-right { display: flex; align-items: center; gap: 10px; }

/* Calculators menu: <details> so links are crawlable and work without JS */
.nav-menu { position: relative; }
.nav-menu > summary {
  list-style: none; cursor: pointer;
  border: 1px solid var(--border2); border-radius: 100px;
  padding: 7px 14px; font-size: 0.78rem; font-weight: 600; color: var(--text2);
  display: inline-flex; align-items: center; gap: 6px; transition: all 0.2s;
}
.nav-menu > summary::-webkit-details-marker { display: none; }
.nav-menu > summary:hover, .nav-menu[open] > summary { border-color: var(--green); color: var(--green); }
.nav-menu > summary svg { width: 12px; height: 12px; transition: transform 0.2s; }
.nav-menu[open] > summary svg { transform: rotate(180deg); }
.nav-panel {
  position: absolute; right: 0; top: calc(100% + 8px); z-index: 50;
  width: 280px; background: var(--surface); border: 1px solid var(--border2);
  border-radius: var(--radius-sm); box-shadow: var(--shadow-lg); padding: 6px;
}
.nav-panel a {
  display: block; padding: 9px 12px; border-radius: 8px; text-decoration: none;
  color: var(--text); font-size: 0.88rem; font-weight: 600;
}
.nav-panel a span { display: block; font-weight: 400; font-size: 0.76rem; color: var(--muted); margin-top: 1px; }
.nav-panel a:hover { background: var(--green-tint); color: var(--green); }
.nav-panel a[aria-current="page"] { background: var(--green-tint); color: var(--green); }

/* Breadcrumbs */
.breadcrumbs { font-size: 0.8rem; color: var(--muted); margin-bottom: 18px; }
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }
.breadcrumbs li + li::before { content: '/'; margin-right: 6px; color: var(--border2); }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--green); }
.breadcrumbs [aria-current] { color: var(--text2); font-weight: 600; }

/* Tool-page hero is a bit tighter than the homepage hero */
header.hero.tool { margin-bottom: 32px; padding-top: 0; }
header.hero.tool h1 { font-size: clamp(2.1rem, 5.6vw, 3.4rem); line-height: 1.05; }

/* Inputs: hints, errors, selects, dates */
.input-hint { font-size: 0.76rem; color: var(--muted); line-height: 1.4; }
.optional { font-weight: 400; color: var(--muted); }
input[aria-invalid="true"] { border-color: var(--error) !important; background: var(--error-soft); }
input[type="date"] {
  width: 100%; background: var(--surface2); border: 1.5px solid transparent;
  border-radius: var(--radius-sm); padding: 12px 14px; font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem; color: var(--text); outline: none; min-height: 48px;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
html.dark input[type="date"] { color-scheme: dark; }
.period-btn[aria-pressed="true"] { background: var(--green-tint); border-color: var(--green); color: var(--green); }

.btn-row { display: flex; gap: 10px; }
.btn-row .calc-btn { flex: 1; }
.reset-btn {
  background: transparent; border: 1px solid var(--border2); border-radius: var(--radius-sm);
  padding: 0 18px; font-family: 'Inter', sans-serif; font-size: 0.88rem; font-weight: 600;
  color: var(--text2); cursor: pointer; transition: all 0.18s;
}
.reset-btn:hover { border-color: var(--green); color: var(--green); }

/* Result notices (short-period warning, already-met, etc.) */
.notice {
  display: none; margin-bottom: 16px; border-radius: var(--radius-sm); padding: 13px 16px;
  font-size: 0.9rem; line-height: 1.55; border: 1px solid var(--amber); background: var(--amber-soft); color: var(--text2);
}
.notice.visible { display: block; }
.notice strong { color: var(--amber); }

.stat-value.down { color: var(--error); }
.td-down { color: var(--error); }

/* Result actions: copy result / share link */
.result-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 16px; }
.result-actions .copy-btn { padding: 9px 16px; font-size: 0.82rem; }

/* Milestones list */
.milestones { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 16px; }
.milestone { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px; box-shadow: var(--shadow-sm); }
.milestone .stat-label { margin-bottom: 4px; }
.milestone .m-val { font-family: 'JetBrains Mono', monospace; font-size: 0.98rem; color: var(--text); }
.milestone .m-sub { font-size: 0.74rem; color: var(--muted); margin-top: 2px; font-family: 'JetBrains Mono', monospace; }

/* Article-style explanation blocks */
.prose { max-width: 760px; margin: 0 auto; }
.prose p { color: var(--text2); font-size: 0.98rem; line-height: 1.7; margin-bottom: 12px; }
.prose strong { color: var(--text); }

/* Related tools */
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.related-card {
  display: block; text-decoration: none; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-sm); transition: all 0.2s;
}
.related-card:hover { border-color: var(--green); transform: translateY(-2px); box-shadow: var(--shadow); }
.related-card h3 { font-family: 'Fraunces', serif; font-weight: 500; font-size: 1.08rem; color: var(--text); margin-bottom: 6px; }
.related-card p { font-size: 0.86rem; color: var(--text2); line-height: 1.5; }
.related-card .arrow { color: var(--green); font-weight: 600; font-size: 0.82rem; margin-top: 10px; display: inline-block; }

/* Footer tool directory */
.footer-tools { display: grid; grid-template-columns: repeat(3, auto); justify-content: center; gap: 8px 28px; margin-bottom: 18px; text-align: left; }
.footer-tools a { color: var(--muted); text-decoration: none; font-size: 0.86rem; }
.footer-tools a:hover { color: var(--green); }

/* Visually hidden (for screen-reader-only labels) */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (max-width: 680px) {
  .related-grid { grid-template-columns: 1fr; }
  .milestones { grid-template-columns: 1fr 1fr; }
  .footer-tools { grid-template-columns: 1fr 1fr; }
  .nav-menu > summary .nav-label-long { display: none; }
  .theme-toggle #theme-label { display: none; }
  .nav-panel { width: min(280px, calc(100vw - 36px)); }
}

/* Row headers in breakdown tables */
tbody th[scope="row"] {
  font-family: 'JetBrains Mono', monospace; font-size: 0.9rem; font-weight: 400;
  letter-spacing: 0; text-transform: none; color: var(--text);
  padding: 12px 8px; border-bottom: 1px solid var(--border);
}
tbody tr:last-child th { border-bottom: none; }
.chart-note { font-size: 0.78rem; color: var(--muted); margin-top: 10px; line-height: 1.5; }
.today-btn { align-self: flex-start; margin-top: 2px; background: none; border: none; color: var(--green); font-size: 0.76rem; font-weight: 600; cursor: pointer; padding: 0; font-family: 'Inter', sans-serif; }
.today-btn:hover { text-decoration: underline; }
.ref-table td, .ref-table th { font-size: 0.86rem; }
.info-card a, .faq-body a, .prose a { color: var(--green); }

/* Select inputs (Sprint 3) */
select {
  width: 100%; min-height: 48px; background: var(--surface2); border: 1.5px solid transparent;
  border-radius: var(--radius-sm); padding: 12px 40px 12px 14px; font-family: 'Inter', sans-serif;
  font-size: 0.95rem; color: var(--text); outline: none; cursor: pointer;
  -webkit-appearance: none; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7a70' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; background-size: 14px;
  transition: border-color 0.2s, background-color 0.2s, box-shadow 0.2s;
}
select:focus { border-color: var(--green); background-color: var(--surface); box-shadow: 0 0 0 3px var(--green-tint); }
html.dark select { color-scheme: dark; }
.footer-tools { grid-template-columns: repeat(4, auto); }
@media (max-width: 680px) { .footer-tools { grid-template-columns: 1fr 1fr; } }