/* gateway-picker - single stylesheet, no build step, no external fonts. */

:root {
  color-scheme: light dark;

  --bg: #fbfbfa;
  --surface: #ffffff;
  --surface-2: #f2f2f0;
  --border: #dcdcd6;
  --border-strong: #b9b9b1;
  --text: #1e1e1c;
  --muted: #5c5c56;
  --accent: #1f5f4f;
  --accent-text: #ffffff;
  --good: #1f5f4f;
  --bad: #8c3020;
  --warn: #7a5a10;
  --focus: #1f5f4f;

  --radius: 8px;
  --gap: 1rem;
  --measure: 68ch;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1b1e23;
    --surface-2: #23272e;
    --border: #333941;
    --border-strong: #4c545e;
    --text: #e6e8ea;
    --muted: #a3aab3;
    --accent: #6fd0b0;
    --accent-text: #0e1114;
    --good: #6fd0b0;
    --bad: #f09080;
    --warn: #e2bd6a;
    --focus: #6fd0b0;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  padding: 0 1.25rem 4rem;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  overflow-x: hidden;
}

code, pre, .mono {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.9em;
}

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

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: 3px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--surface);
  padding: 0.6rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
}
.skip:focus { left: 1rem; top: 1rem; z-index: 10; }

.page-head, main, .page-foot { max-width: 62rem; margin: 0 auto; }

.page-head { padding: 2.5rem 0 1rem; }
.page-head h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  letter-spacing: -0.02em;
}
.lede { max-width: var(--measure); color: var(--muted); margin: 0 0 0.75rem; }
.lede.small { font-size: 0.9rem; }

section { margin: 2.5rem 0; }

h2 {
  font-size: 1.25rem;
  margin: 0 0 0.4rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--border);
}

h3 { font-size: 1.05rem; margin: 1.5rem 0 0.5rem; }
h4 { font-size: 0.95rem; margin: 1rem 0 0.4rem; }

.section-note, #method p { max-width: var(--measure); color: var(--muted); }

/* ------------------------------ questionnaire --------------------------- */

fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  margin: 0 0 1rem;
  padding: 1rem 1.1rem 1.1rem;
}

legend {
  font-weight: 650;
  padding: 0 0.4rem;
  font-size: 1rem;
}

.why {
  margin: 0 0 0.9rem;
  color: var(--muted);
  font-size: 0.9rem;
  max-width: var(--measure);
}

.why .weight {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0.05rem 0.4rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.75rem;
  white-space: nowrap;
}

.options { display: grid; gap: 0.4rem; grid-template-columns: 1fr; }
@media (min-width: 46rem) {
  .options { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
}

.opt {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  cursor: pointer;
}
.opt:hover { border-color: var(--border-strong); }
.opt input { margin: 0.3rem 0 0; flex: none; accent-color: var(--accent); }
.opt:has(input:checked) { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.opt:has(input:focus-visible) { outline: 2px solid var(--focus); outline-offset: 2px; }
.opt .label { font-weight: 550; }
.opt .hint { display: block; color: var(--muted); font-size: 0.83rem; font-weight: 400; }

/* ------------------------------ toolbar --------------------------------- */

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 1rem;
}

.btn {
  font: inherit;
  font-size: 0.9rem;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius);
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}
.btn.secondary { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn:hover { filter: brightness(1.08); }

.status { color: var(--muted); font-size: 0.85rem; }

/* ------------------------------ results --------------------------------- */

.empty {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 1.25rem;
  color: var(--muted);
  max-width: var(--measure);
}

.winner {
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1.1rem 1.2rem;
  margin: 1rem 0;
}
.winner h3 { margin-top: 0; font-size: 1.3rem; }
.winner .blurb { color: var(--muted); max-width: var(--measure); }

.coverage { font-size: 0.85rem; color: var(--muted); margin: 0.25rem 0 0; }

.rank-list { list-style: none; margin: 1rem 0 0; padding: 0; display: grid; gap: 0.5rem; }
.rank {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.75rem;
  align-items: start;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.rank .pos { color: var(--muted); font-variant-numeric: tabular-nums; }
.rank .name { font-weight: 600; }
.rank .figures { color: var(--muted); font-size: 0.85rem; font-variant-numeric: tabular-nums; }

.bar {
  height: 7px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
  margin-top: 0.35rem;
  max-width: 26rem;
}
.bar span { display: block; height: 100%; background: var(--accent); }

.cases { display: grid; gap: 1rem; margin-top: 1rem; }
@media (min-width: 52rem) { .cases { grid-template-columns: 1fr 1fr; } }

.case {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  background: var(--surface);
}
.case ul { margin: 0.4rem 0 0; padding-left: 1.1rem; }
.case li { margin-bottom: 0.5rem; }
.case .tag { font-size: 0.78rem; color: var(--muted); display: block; }
.case.for h4 { color: var(--good); }
.case.against h4 { color: var(--bad); }

.ruled-out { border: 1px solid var(--border); border-radius: var(--radius); padding: 0.8rem 1rem; background: var(--surface); margin-top: 1rem; }
.ruled-out ul { margin: 0.4rem 0 0; padding-left: 1.1rem; }
.ruled-out .who { font-weight: 600; }

.table-wrap { overflow-x: auto; margin-top: 0.75rem; }

table { border-collapse: collapse; width: 100%; font-size: 0.88rem; }
caption { text-align: left; color: var(--muted); font-size: 0.85rem; padding-bottom: 0.4rem; }
th, td { text-align: left; padding: 0.45rem 0.6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-weight: 650; background: var(--surface-2); position: sticky; top: 0; }
td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.pos-delta { color: var(--good); }
.neg-delta { color: var(--bad); }

.rating { font-weight: 600; white-space: nowrap; }
.rating.excellent { color: var(--good); }
.rating.good { color: var(--good); opacity: 0.85; }
.rating.adequate { color: var(--muted); }
.rating.neutral { color: var(--muted); }
.rating.poor { color: var(--bad); }
.cell-note { color: var(--muted); display: block; font-size: 0.82rem; }

dl { margin: 0.5rem 0 0; }
dt { font-weight: 600; margin-top: 0.75rem; }
dd { margin: 0.15rem 0 0; color: var(--muted); max-width: var(--measure); }

details { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); padding: 0.6rem 0.9rem; margin-top: 1rem; }
details + details { margin-top: 0.5rem; }
summary { cursor: pointer; font-weight: 600; }
summary:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.page-foot {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.88rem;
}

@media (prefers-reduced-motion: no-preference) {
  .bar span { transition: width 200ms ease-out; }
}