/* costsegqualification.com — site styles
   Fintech advisor dialect: white surfaces, hairline borders,
   navy ink, one money accent. IBM Plex Sans + JetBrains Mono. */

:root {
  --surface: #ffffff;
  --muted: #f2f5fa;
  --ink: #0a2540;
  --ink-2: #51607a;
  --ink-3: #5c6880;
  --accent: #1f7a4f;
  --accent-ink: #14613c;
  --accent-tint: #eef6f1;
  --caution: #b6770f;
  --caution-tint: #fdf6e8;
  --border: #dde3ee;
  --border-soft: #e8edf5;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow-card: 0 1px 2px rgba(10, 37, 64, 0.04), 0 8px 24px rgba(10, 37, 64, 0.06);
  --font-sans: 'IBM Plex Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --sect-y: 96px;
  --max: 1120px;
}

html[data-density="compact"] {
  --sect-y: 64px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 32px; }

h1, h2, h3 { font-weight: 600; line-height: 1.2; margin: 0; text-wrap: pretty; }

a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; }

.num, .mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---------- header ---------- */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-soft);
}

.site-header .wrap {
  display: flex; align-items: center; gap: 32px; height: 64px;
}

.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 600; font-size: 16px; white-space: nowrap; }
.brand:hover { text-decoration: none; }
.brand .brand-net { color: var(--ink-3); font-weight: 400; }

.site-nav { display: flex; gap: 28px; margin-left: auto; align-items: center; }
.site-nav a { color: var(--ink-2); font-size: 14.5px; font-weight: 500; }
.site-nav a:hover { color: var(--ink); text-decoration: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-sans); font-size: 15px; font-weight: 600;
  border-radius: 8px; padding: 10px 18px; border: 1px solid transparent;
  cursor: pointer; transition: background 120ms ease, border-color 120ms ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); }
.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--border); }
.btn-secondary:hover { border-color: var(--ink-3); }
.btn-quiet { background: transparent; color: var(--ink-2); padding: 10px 8px; }
.btn-quiet:hover { color: var(--ink); }
.btn-lg { font-size: 16px; padding: 13px 24px; }

/* ---------- hero ---------- */

.hero { background: var(--muted); border-bottom: 1px solid var(--border-soft); }
.hero .wrap { padding-top: 72px; padding-bottom: 80px; }
html[data-density="compact"] .hero .wrap { padding-top: 48px; padding-bottom: 56px; }

.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 460px; gap: 72px; align-items: start; }

.hero h1 { font-size: 46px; letter-spacing: -0.015em; margin: 16px 0 20px; }
.hero-sub { font-size: 18px; color: var(--ink-2); max-width: 46ch; margin: 0; }

.hero-points { list-style: none; margin: 32px 0 0; padding: 0; display: grid; gap: 10px; }
.hero-points li { display: flex; gap: 10px; font-size: 15px; color: var(--ink-2); align-items: baseline; line-height: 1.45; }
.hero-points .tick { font-family: var(--font-mono); font-size: 13px; color: var(--accent); }

/* ---------- qualifier form ---------- */

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

.qualifier-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 20px; }
.qualifier-head h2 { font-size: 16px; }
.qualifier-head .qtime { font-family: var(--font-mono); font-size: 12px; color: var(--ink-3); }

.fields { display: grid; gap: 18px; }

.field label {
  display: block; font-size: 13px; font-weight: 600; color: var(--ink);
  margin-bottom: 6px; letter-spacing: 0.01em;
}
.field .hint { font-weight: 400; color: var(--ink-3); }

.field select,
.field input[type="text"] {
  width: 100%; font-family: var(--font-sans); font-size: 15px; color: var(--ink);
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px; appearance: none;
}
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2351607a' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
  padding-right: 32px;
}
.field select:focus, .field input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(31, 122, 79, 0.12);
}

.slider-row { display: flex; align-items: center; gap: 14px; }
.slider-row input[type="range"] { flex: 1; accent-color: var(--accent); }
.slider-readout {
  font-family: var(--font-mono); font-variant-numeric: tabular-nums;
  font-size: 15px; font-weight: 500; color: var(--ink);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 10px; width: 122px; text-align: right; background: var(--surface);
}
.slider-readout:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(31,122,79,0.12); }

.seg { display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg label { display: block; flex: 1; margin: 0; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span {
  display: block; text-align: center; font-size: 14px; font-weight: 500;
  color: var(--ink-2); padding: 9px 4px; cursor: pointer; background: var(--surface);
  border-left: 1px solid var(--border); transition: background 100ms ease;
}
.seg label:first-of-type span { border-left: none; }
.seg input:checked + span { background: var(--ink); color: #fff; }
.seg input:focus-visible + span { box-shadow: inset 0 0 0 2px var(--accent); }

.field-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.qualifier .btn-primary { width: 100%; margin-top: 4px; }
.qualifier-foot { font-size: 12.5px; color: var(--ink-3); text-align: center; margin: 12px 0 0; }

/* ---------- hero variant: banner ---------- */

body[data-hero="banner"] .hero-grid { display: block; }
body[data-hero="banner"] .hero-copy { text-align: center; max-width: 720px; margin: 0 auto 44px; }
body[data-hero="banner"] .hero-sub { margin: 0 auto; }
body[data-hero="banner"] .hero-points { display: flex; justify-content: center; gap: 28px; flex-wrap: wrap; }
body[data-hero="banner"] .qualifier { max-width: 1040px; margin: 0 auto; }
body[data-hero="banner"] .fields { grid-template-columns: repeat(3, 1fr); gap: 18px 22px; }
body[data-hero="banner"] .field-pair { grid-column: span 2; }
body[data-hero="banner"] .qualifier .btn-primary { grid-column: 1 / -1; width: auto; justify-self: center; min-width: 320px; }

/* ---------- hero variant: ledger ---------- */

body[data-hero="ledger"] .hero-grid { display: block; }
body[data-hero="ledger"] .hero-copy { max-width: 760px; margin-bottom: 40px; }
body[data-hero="ledger"] .qualifier { padding: 0; overflow: hidden; }
body[data-hero="ledger"] .qualifier-head { padding: 16px 24px 0; margin-bottom: 4px; }
body[data-hero="ledger"] .fields {
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
body[data-hero="ledger"] .field { padding: 16px 24px; border-top: 1px solid var(--border-soft); }
body[data-hero="ledger"] .field:nth-child(3n+2), body[data-hero="ledger"] .field:nth-child(3n) { border-left: 1px solid var(--border-soft); }
body[data-hero="ledger"] .qualifier .btn-primary { width: auto; margin: 8px 24px 20px; justify-self: end; min-width: 280px; }
body[data-hero="ledger"] .qualifier-foot { padding: 0 24px 18px; margin-top: -8px; text-align: right; }

/* ---------- sections ---------- */

.section { padding: var(--sect-y) 0; }
.section-muted { background: var(--muted); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
.section h2 { font-size: 30px; letter-spacing: -0.01em; margin: 10px 0 14px; }
.section .lede { font-size: 17px; color: var(--ink-2); max-width: 62ch; margin: 0 0 40px; }

/* ---------- verdict ---------- */

#verdict .wrap { max-width: 920px; }

.verdict-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.verdict-empty { padding: 56px 40px; text-align: center; color: var(--ink-3); }
.verdict-empty .mono { font-size: 13px; }

.verdict-band { padding: 22px 36px; display: flex; align-items: center; gap: 14px; border-bottom: 1px solid var(--border-soft); }
.verdict-chip {
  font-family: var(--font-mono); font-size: 11.5px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 6px;
}
.verdict-card[data-state="strong"] .verdict-band { background: var(--accent-tint); }
.verdict-card[data-state="strong"] .verdict-chip { background: var(--accent); color: #fff; }
.verdict-card[data-state="review"] .verdict-chip { background: var(--ink); color: #fff; }
.verdict-card[data-state="marginal"] .verdict-chip { background: var(--muted); color: var(--ink-2); border: 1px solid var(--border); }
.verdict-band h3 { font-size: 19px; }

.verdict-body { padding: 32px 36px 36px; }

.verdict-figures { display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; padding-bottom: 28px; border-bottom: 1px solid var(--border-soft); }
.figure-label { font-size: 13px; font-weight: 600; color: var(--ink-2); display: flex; gap: 6px; align-items: baseline; }
.figure-label .est {
  font-family: var(--font-mono); font-size: 10px; font-weight: 600; letter-spacing: 0.08em;
  color: var(--ink-3); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px;
}
.figure-value {
  font-family: var(--font-mono); font-variant-numeric: tabular-nums;
  font-size: 44px; font-weight: 600; color: var(--ink); line-height: 1.15;
  margin-top: 6px; letter-spacing: -0.01em;
}
.figure-value .cur { font-size: 0.55em; font-weight: 500; color: var(--ink-3); vertical-align: 0.32em; margin-right: 1px; }
.figure-value .dash { color: var(--ink-3); font-weight: 400; }
.verdict-card[data-state="strong"] .figure-value.primary { color: var(--accent-ink); }
.figure-sub { font-size: 13.5px; color: var(--ink-3); margin-top: 4px; }
.figure-sub .num { color: var(--ink-2); }

.verdict-why { padding: 22px 0 0; font-size: 15.5px; color: var(--ink-2); max-width: 60ch; }
.verdict-why strong { color: var(--ink); font-weight: 600; }

.verdict-flag {
  margin-top: 18px; padding: 14px 16px;
  border: 1px solid #ecdcb4; background: var(--caution-tint); border-radius: var(--radius);
  display: flex; gap: 12px; font-size: 14.5px; color: var(--ink-2);
}
.verdict-flag .flag-dot { color: var(--caution); font-family: var(--font-mono); font-size: 13px; line-height: 1.7; }
.verdict-flag strong { color: var(--ink); display: block; font-size: 14px; }

.verdict-actions { display: flex; gap: 14px; align-items: center; margin-top: 28px; flex-wrap: wrap; }
.verdict-rerun { font-size: 14.5px; color: var(--ink-2); background: none; border: none; cursor: pointer; font-family: var(--font-sans); padding: 10px 4px; text-decoration: underline; text-underline-offset: 3px; }
.verdict-rerun:hover { color: var(--ink); }

.verdict-footnote { font-size: 12.5px; color: var(--ink-3); margin: 22px 0 0; max-width: 72ch; line-height: 1.55; }

/* ---------- levers ("what we checked") ---------- */

.levers { border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); overflow: hidden; }
.lever-row { display: grid; grid-template-columns: 240px 1fr 170px; gap: 24px; padding: 20px 28px; border-top: 1px solid var(--border-soft); align-items: baseline; }
.lever-row:first-child { border-top: none; }
.lever-name { font-size: 14.5px; font-weight: 600; }
.lever-desc { font-size: 14.5px; color: var(--ink-2); }
.lever-value { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 13.5px; color: var(--ink-2); text-align: right; }
.lever-value[data-tone="amber"] { color: var(--caution); }
.lever-value[data-tone="green"] { color: var(--accent-ink); }

/* ---------- how it works ---------- */

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 26px; }
.step .step-n { font-family: var(--font-mono); font-size: 12px; color: var(--accent-ink); letter-spacing: 0.1em; }
.step h3 { font-size: 17px; margin: 12px 0 8px; }
.step p { font-size: 14.5px; color: var(--ink-2); margin: 0; }
.how-cite { font-size: 13px; color: var(--ink-3); margin-top: 28px; }
.how-cite a { color: var(--ink-2); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- FAQ ---------- */

#faq .wrap { max-width: 880px; }
.faq-list { border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item summary {
  cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 24px;
  align-items: baseline; padding: 20px 4px; font-size: 16.5px; font-weight: 600;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-marker { font-family: var(--font-mono); color: var(--ink-3); font-size: 14px; transition: transform 150ms ease; }
.faq-item[open] summary .faq-marker { transform: rotate(45deg); }
.faq-item .faq-a { padding: 0 4px 22px; font-size: 15.5px; color: var(--ink-2); max-width: 68ch; }
.faq-item .faq-a p { margin: 0 0 10px; }
.faq-item .faq-a p:last-child { margin-bottom: 0; }

/* ---------- CTA band ---------- */

.cta-band { background: var(--ink); color: #fff; }
.cta-band .wrap { padding: 72px 32px; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }
.cta-band h2 { font-size: 28px; color: #fff; margin: 0 0 10px; }
.cta-band p { color: #b6c2d4; margin: 0; font-size: 16px; max-width: 52ch; }
.cta-actions { display: flex; gap: 14px; align-items: center; }
.cta-band .btn-secondary { background: transparent; color: #fff; border-color: #3d5270; }
.cta-band .btn-secondary:hover { border-color: #8492ab; }

/* ---------- footer ---------- */

.site-footer { background: #081d33; color: #93a3ba; font-size: 14px; }
.site-footer .wrap { padding: 56px 32px 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; }
.site-footer h3 { font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: #8b9bb2; margin: 0 0 14px; font-family: var(--font-mono); font-weight: 500; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.site-footer a { color: #b6c2d4; }
.site-footer a:hover { color: #fff; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 600; margin-bottom: 14px; }
.footer-legal { border-top: 1px solid #1c3450; margin-top: 44px; padding-top: 22px; display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; font-size: 12.5px; color: #8b9bb2; }
.footer-legal a { color: #93a3ba; }
.footer-disclaimer { font-size: 12.5px; color: #8b9bb2; max-width: 70ch; margin: 18px 0 0; line-height: 1.55; }

/* ---------- responsive ---------- */

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero h1 { font-size: 36px; }
  /* 16px prevents iOS zoom-on-focus; taller padding gives ≥44px touch targets */
  .field select, .field input[type="text"], .slider-readout { font-size: 16px; padding-top: 12px; padding-bottom: 12px; }
  body[data-hero="banner"] .fields,
  body[data-hero="ledger"] .fields { grid-template-columns: 1fr; }
  body[data-hero="ledger"] .field { border-left: none !important; }
  .verdict-figures { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .lever-row { grid-template-columns: 1fr; gap: 6px; }
  .lever-value { text-align: left; }
  .cta-band .wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .site-nav { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}