/* HumanKit Health — no frameworks, no build step. */

:root {
  --bg: #f7f8f7;
  --card: #ffffff;
  --ink: #1c2420;
  --ink-soft: #5a655f;
  --line: #e2e6e3;
  --accent: #157a5b;
  --accent-soft: #e3f2ec;
  --good: #157a5b;
  --bad: #b3413c;
  --warn-bg: #fdf6e8;
  --warn-line: #e8d9b0;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); }

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

.site-header {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 1.25rem 1rem;
  flex-shrink: 0;
}

.site-header h1 {
  margin: 0 0 .15rem;
  font-size: 1.6rem;
  color: var(--accent);
}

/* ------------------------------------------------------------- layout */

main {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 1.25rem 2rem;
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(0,1fr);
  gap: 2rem;
  align-items: start;
}

@media (max-width: 900px) {
  main { grid-template-columns: 1fr; }
}

.site-header h1 .accent { color: var(--accent); }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.page-nav { display: flex; gap: 0.4rem; }

.page-nav a {
  padding: 0.35rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.12s, color 0.12s;
}

.page-nav a:hover { border-color: var(--accent); color: var(--accent); }

.page-nav a[aria-current="page"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.tagline {
  margin: 0.15rem 0 0.9rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.privacy-pill {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid #bcdccf;
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 600;
}

.disclaimer {
  margin-top: 1rem;
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  font-size: 0.92rem;
}

/* ---------------------------------------------------------------- layout */

.group {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem 0.4rem;
  margin-bottom: 1.25rem;
}

.group h2 {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------------- inputs */

.input { padding: 0.7rem 0; border-top: 1px solid var(--line); }
.input:first-of-type { border-top: 0; }

.input-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
}

.input-head label, .input-label { font-weight: 600; font-size: 0.95rem; }

.input-value {
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  font-weight: 700;
  white-space: nowrap;
}

input[type="range"] {
  width: 100%;
  margin: 0.5rem 0 0.1rem;
  accent-color: var(--accent);
  cursor: pointer;
}

.input-hint {
  margin: 0.15rem 0 0;
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.bmi-readout {
  padding: 0.55rem 0 0.8rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

/* segmented control */
.segmented { display: flex; gap: 0.4rem; margin-top: 0.45rem; flex-wrap: wrap; }
.seg-option { position: relative; }
.seg-option input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.seg-option span {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.88rem;
  transition: background 0.12s, border-color 0.12s;
}
.seg-option input:checked + span {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.seg-option input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

/* toggle */
.toggle-head { align-items: center; }
.switch { position: relative; display: inline-block; }
.switch input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.switch-track {
  display: inline-block;
  width: 44px; height: 24px;
  background: #cdd5d0;
  border-radius: 999px;
  transition: background 0.15s;
  vertical-align: middle;
}
.switch-track::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.15s;
}
.switch input:checked + .switch-track { background: var(--accent); }
.switch input:checked + .switch-track::after { transform: translateX(20px); }
.switch input:focus-visible + .switch-track { outline: 2px solid var(--accent); outline-offset: 2px; }

/* impact chips */
.chips { display: flex; flex-wrap: wrap; gap: 0.3rem; margin-top: 0.4rem; }
.chips:empty { display: none; }
.chip {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.12rem 0.5rem;
  border-radius: 999px;
  cursor: help;
}
.chip.good { background: var(--accent-soft); color: var(--good); }
.chip.bad { background: #f8e9e8; color: var(--bad); }
.chip-ref { color: inherit; text-decoration: none; opacity: 0.75; }
.chip-ref:hover { opacity: 1; text-decoration: underline; }

/* ------------------------------------------------------------- outputs */

#outputs {
  position: sticky;
  top: 1rem;
  max-height: calc(100vh - 2rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}

@media (max-width: 900px) {
  #outputs {
    position: static;
    max-height: none;
    overflow-y: visible;
  }
}

@media (max-width: 600px) {
  .output-main { flex-direction: column; align-items: stretch; }
  .output-highlight { min-width: 0; }
}
.advanced-toggle {
  margin-top: 0.8rem;
}
.advanced-toggle summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--accent);
  user-select: none;
}

.output-tiles {
  display: block;
}
.output-tiles > .output-card { margin-bottom: 0; }
#out-mortality { margin-bottom: 1rem; }
.output-row.split {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.output-row.split > .output-card { flex: 1; min-width: 0; }
.output-divider {
  border: none;
  border-top: 2px solid var(--ink-soft);
  margin: 0.5rem 0;
  opacity: 0.35;
}

.output-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
}
.output-main {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.output-highlight {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 0.7rem 1.2rem;
  text-align: center;
  flex-shrink: 0;
  min-width: 8rem;
}
.output-info {
  flex: 1;
  min-width: 0;
}
.mort-top {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 0.2rem;
}
.mort-right {
  flex: 1;
  min-width: 0;
}
.mort-right .hr-sub {
  margin: 0 0 0.2rem;
}
.mort-right .gauge {
  margin-top: 0;
}
#out-mortality details {
  margin-top: 0.3rem;
}
.qual-text {
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin: -0.3rem 0 0.6rem;
}
.ci-note {
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin: 0.5rem 0 0;
  font-style: italic;
}
.output-tiles + .findings-card { margin-top: 1rem; }

.output-card h3 {
  margin: 0 0 0.6rem;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.le-big { display: flex; align-items: baseline; gap: 0.4rem; }
.le-big output { font-size: 2.6rem; font-weight: 800; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.le-unit { color: var(--ink-soft); }
.le-delta { font-weight: 600; margin-top: 0.1rem; font-variant-numeric: tabular-nums; }
.le-range { color: var(--ink-soft); font-size: 0.85rem; font-variant-numeric: tabular-nums; }
.clamp-note { color: var(--bad); font-size: 0.85rem; cursor: help; }
.le-method { font-size: 0.82rem; color: var(--ink-soft); margin: 0.5rem 0 0; line-height: 1.45; }

.hr-big { display: flex; align-items: baseline; gap: 0.4rem; }
.hr-big output { font-size: 2.6rem; font-weight: 800; font-variant-numeric: tabular-nums; }
#out-cancer .hr-big output, #out-cvd .hr-big output { font-size: 1.6rem; }
.hr-unit, .hr-sub { color: var(--ink-soft); font-size: 0.9rem; }
.hr-sub { font-variant-numeric: tabular-nums; }

/* mortality gauge */
.gauge {
  position: relative;
  height: 14px;
  margin: 0.9rem 0 0.2rem;
  background: linear-gradient(90deg, #cfe9dd 0%, #eef1ef 45%, #eef1ef 55%, #f3d9d7 100%);
  border-radius: 999px;
  border: 1px solid var(--line);
}
.gauge-band {
  position: absolute;
  top: 0; bottom: 0;
  background: rgba(21, 122, 91, 0.18);
  border-radius: 999px;
}
.gauge-marker {
  position: absolute;
  top: -4px; bottom: -4px;
  width: 4px;
  margin-left: -2px;
  background: var(--ink);
  border-radius: 2px;
}
.gauge-ref {
  position: absolute;
  top: -4px; bottom: -4px;
  left: 50%;
  width: 2px;
  margin-left: -1px;
  background: var(--ink-soft);
  opacity: 0.5;
}
.gauge-scale {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

.coverage-note {
  margin: 0.6rem 0 0;
  font-size: 0.78rem;
  color: var(--ink-soft);
  border-top: 1px dashed var(--line);
  padding-top: 0.5rem;
}

/* band meter for mind outputs */
.band-meter {
  position: relative;
  height: 14px;
  margin: 0.9rem 0 0.4rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: linear-gradient(90deg, #f3d9d7, #eef1ef 35%, #eef1ef 65%, #cfe9dd);
}
.band-marker {
  position: absolute;
  top: -4px; bottom: -4px;
  background: rgba(28, 36, 32, 0.35);
  border-radius: 4px;
  transition: left 0.15s ease;
}
.band-ref {
  position: absolute;
  top: -4px; bottom: -4px;
  left: 50%;
  width: 2px;
  margin-left: -1px;
  background: var(--ink-soft);
  opacity: 0.5;
}
.band-label { font-weight: 700; }

/* findings card */
.findings-blurb { font-size: 0.82rem; color: var(--ink-soft); margin: 0 0 0.5rem; }
.findings { list-style: none; margin: 0; padding: 0; font-size: 0.85rem; }
.findings li.finding {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.4rem 0;
  border-top: 1px solid var(--line);
}
.finding-icon { font-weight: 800; width: 1rem; text-align: center; flex-shrink: 0; }
.finding.good .finding-icon { color: var(--good); }
.finding.bad .finding-icon { color: var(--bad); }
.finding.neutral .finding-icon { color: var(--ink-soft); }
.finding-text { flex: 1; }
.finding-meta { color: var(--ink-soft); font-size: 0.78rem; white-space: nowrap; }
.findings-empty { color: var(--ink-soft); padding: 0.4rem 0; }

/* gated (advanced) inputs */
.input.gated { transition: opacity 0.15s; }
.input.gate-closed { opacity: 0.45; }
.input.gate-closed input[type="range"] { cursor: not-allowed; }

.output-blurb { font-size: 0.85rem; color: var(--ink-soft); margin: 0.7rem 0 0; }

/* evidence badges */
.ev {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
  cursor: help;
}
.ev[data-ev="high"] { background: var(--accent-soft); color: var(--good); }
.ev[data-ev="moderate"] { background: var(--warn-bg); color: #8a6d1a; }
.ev[data-ev="low"] { background: #f8e9e8; color: var(--bad); }
.ev.small { font-size: 0.58rem; padding: 0.05rem 0.4rem; }

/* contributions */
details { margin-top: 0.8rem; }
summary { cursor: pointer; font-size: 0.88rem; font-weight: 600; color: var(--accent); }
.contrib { list-style: none; margin: 0.5rem 0 0; padding: 0; font-size: 0.85rem; }
.contrib li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0;
  border-top: 1px solid var(--line);
}
.contrib-effect { font-weight: 700; font-variant-numeric: tabular-nums; min-width: 4.5rem; }
.contrib-effect.good { color: var(--good); }
.contrib-effect.bad { color: var(--bad); }
.contrib-label { flex: 1; }
.contrib-ref { text-decoration: none; }
.contrib-empty { color: var(--ink-soft); }

/* -------------------------------------------------- methodology + refs */

.page-section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.25rem 2.5rem;
}

.page-section h2 {
  font-size: 1.2rem;
  margin: 1.5rem 0 0.5rem;
}

.page-section h3 { font-size: 1rem; margin: 1.2rem 0 0.3rem; }

.page-section p, .page-section li { font-size: 0.92rem; color: var(--ink); }
.page-section ul { padding-left: 1.2rem; }

#ref-list { font-size: 0.85rem; color: var(--ink-soft); }
#ref-list li { margin-bottom: 0.45rem; padding: 0.15rem 0.4rem; scroll-margin-top: 1.5rem; }
#ref-list li:target {
  background: var(--accent-soft);
  border-radius: 6px;
  color: var(--ink);
}

.reset-row { margin-bottom: 1.25rem; }
#reset {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}
#reset:hover { border-color: var(--accent); color: var(--accent); }

footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 1.25rem 3rem;
  max-width: 1280px;
  margin: 0 auto;
  font-size: 0.8rem;
  color: var(--ink-soft);
}