:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --ink: #1c2530;
  --muted: #5b6675;
  --line: #e2e7ee;
  --brand: #2563eb;
  --brand-ink: #ffffff;
  --good: #15a34a;
  --bad: #d23f3f;
  --star: #f5b301;
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.container {
  max-width: 560px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 1px 3px rgba(20, 30, 45, .06);
}

.card.center { text-align: center; }

.logo { max-height: 56px; max-width: 70%; display: block; margin: 0 0 1rem; }
.card.center .logo { margin: 0 auto 1rem; }
.admin-head .logo { max-height: 36px; margin: 0; }

h1 { font-size: 1.5rem; margin: 0 0 .25rem; }
.lede { color: var(--muted); margin: 0 0 1.25rem; }

.field { border: 0; padding: 0; margin: 0 0 1.5rem; }
.field legend { font-weight: 600; padding: 0; margin-bottom: .6rem; }

/* Star rating — CSS only. Stars are emitted high->low in the DOM and reversed
   for display, so they read 1..5 left-to-right while sibling selectors can light
   "this star and every lower one". Works without JavaScript. */
.stars { display: flex; flex-direction: row-reverse; justify-content: flex-end; gap: 6px; }
.star { cursor: pointer; line-height: 1; }
.star input { position: absolute; opacity: 0; width: 0; height: 0; }
.star span[aria-hidden] { font-size: 2.2rem; color: var(--line); transition: color .08s; }
.star:hover span[aria-hidden],
.star:hover ~ .star span[aria-hidden],
.star:has(input:checked) span[aria-hidden],
.star:has(input:checked) ~ .star span[aria-hidden] { color: var(--star); }

/* Generic choices */
.choices { display: flex; gap: 10px; flex-wrap: wrap; }
.choice {
  border: 1px solid var(--line); border-radius: 999px;
  padding: .5rem 1rem; cursor: pointer; user-select: none;
}
.choice:has(input:checked) { border-color: var(--brand); background: #eff4ff; color: var(--brand); font-weight: 600; }
.choice input { margin-right: .4rem; }

/* 1..7 effort scale */
.scale { display: flex; gap: 6px; justify-content: space-between; }
.scale-pt { flex: 1; text-align: center; cursor: pointer; }
.scale-pt input { position: absolute; opacity: 0; width: 0; height: 0; }
.scale-pt span {
  display: block; border: 1px solid var(--line); border-radius: 10px;
  padding: .55rem 0; font-weight: 600;
}
.scale-pt:has(input:checked) span { border-color: var(--brand); background: var(--brand); color: #fff; }
.scale-ends { display: flex; justify-content: space-between; color: var(--muted); font-size: .82rem; margin-top: .35rem; }

textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px;
  padding: .7rem; font: inherit; resize: vertical;
}

.btn {
  display: inline-block; border: 0; border-radius: 10px;
  padding: .8rem 1.2rem; font: inherit; font-weight: 600; cursor: pointer;
  text-decoration: none;
}
.btn.primary { background: var(--brand); color: var(--brand-ink); width: 100%; font-size: 1.05rem; }
.btn.primary:hover { filter: brightness(1.05); }
.btn.ghost { background: transparent; border: 1px solid var(--line); color: var(--ink); }

.big-check, .big-x {
  width: 64px; height: 64px; border-radius: 50%;
  display: grid; place-items: center; margin: 0 auto 1rem;
  font-size: 2rem; font-weight: 700; color: #fff;
}
.big-check { background: var(--good); }
.big-x { background: var(--bad); }

.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;
}

/* ---- Admin ---- */
.admin-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; gap: 12px; flex-wrap: wrap; }
.admin-head h1 { margin: 0; }
.admin-nav a { color: var(--muted); text-decoration: none; margin-left: 14px; }
.admin-nav a:hover { color: var(--brand); }
.container.wide { max-width: 1040px; }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 20px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.kpi .v { font-size: 1.8rem; font-weight: 700; }
.kpi .l { color: var(--muted); font-size: .85rem; }

.charts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.chart-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.chart-card.full { grid-column: 1 / -1; }
.chart-card h3 { margin: 0 0 .75rem; font-size: 1rem; }
/* Fixed-height canvas wrapper: prevents the Chart.js resize feedback loop. */
.cbox { position: relative; height: 220px; }
.chart-card.full .cbox { height: 260px; }
#comments { max-height: 260px; overflow-y: auto; }

.toolbar { display: flex; gap: 10px; align-items: end; flex-wrap: wrap; margin-bottom: 18px; }
.toolbar label { display: flex; flex-direction: column; font-size: .82rem; color: var(--muted); gap: 4px; }
.toolbar input, .toolbar select { padding: .5rem; border: 1px solid var(--line); border-radius: 8px; font: inherit; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .55rem .6rem; border-bottom: 1px solid var(--line); font-size: .92rem; vertical-align: top; }
th { color: var(--muted); font-weight: 600; }

.form-row { margin-bottom: 1rem; }
.form-row label { display: block; font-weight: 600; margin-bottom: .35rem; }
.form-row input { width: 100%; padding: .65rem; border: 1px solid var(--line); border-radius: 8px; font: inherit; }
.notice { padding: .7rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.notice.err { background: #fdecec; color: var(--bad); }
.notice.ok { background: #eafaf0; color: var(--good); }
.code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; background: #f0f3f7; padding: .5rem .7rem; border-radius: 8px; word-break: break-all; display: block; margin-top: .5rem; }
.inline { display: inline; }
#comments .c { border-bottom: 1px solid var(--line); padding: .6rem 0; }
#comments .c:last-child { border-bottom: 0; }
#comments .meta { color: var(--muted); font-size: .8rem; margin-bottom: .2rem; }
#rangeNote { color: var(--muted); font-size: .85rem; }

@media (max-width: 640px) {
  .charts { grid-template-columns: 1fr; }
}