:root {
  color-scheme: light dark;
  --bg: #f3efe6;
  --fg: #1c1915;
  --muted: #6d655c;
  --card: #fffdf8;
  --line: #e3dacd;
  --accent: #1f4d3a;
  --accent-fg: #f7f3ea;
  --warn: #8a4b12;
  --bar: #d9cfc0;
  --fill: #1f4d3a;
  --shadow: 0 16px 40px rgba(40, 30, 16, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141311;
    --fg: #f3efe7;
    --muted: #b1a79c;
    --card: #211e1a;
    --line: #3a342c;
    --accent: #d7e4d4;
    --accent-fg: #17211b;
    --warn: #e2b07a;
    --bar: #3a342c;
    --fill: #d7e4d4;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font: 18px/1.45 Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, serif;
}

button, input {
  font: inherit;
  color: inherit;
}

button { cursor: pointer; }

#app {
  width: min(40rem, 100%);
  margin: 0 auto;
  padding: 20px 16px 48px;
}

.top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
  font: 600 13px/1.2 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 24px 20px 20px;
}

h1 {
  margin: 0 0 12px;
  font-size: 34px;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

h2 {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.03em;
}

.lead, .note, .status, .meta {
  color: var(--muted);
}

.lead { margin: 0 0 18px; }

.invite p {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.5;
}

.invite p:last-child { margin-bottom: 0; }

.note { margin: 8px 0 0; font-size: 16px; }

.stack { display: grid; gap: 10px; }

label.field { display: grid; gap: 6px; }

.field span, .kicker {
  font: 600 13px/1.2 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

input[type="number"], input[type="text"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: transparent;
}

.choice {
  position: relative;
  display: flex;
  align-items: center;
}

.choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice, .primary, .ghost {
  width: 100%;
  text-align: left;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: transparent;
  padding: 14px 16px;
  min-height: 52px;
}

.choice.selected, .primary {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: transparent;
}

.primary, .ghost { text-align: center; }

.ghost { background: transparent; }

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}

.progress {
  height: 6px;
  border-radius: 99px;
  background: var(--bar);
  overflow: hidden;
  margin: 10px 0 14px;
}

.progress span {
  display: block;
  height: 100%;
  background: var(--fill);
}

.meta { margin: 0 0 8px; font-size: 16px; }

.question { margin: 8px 0 16px; font-size: 28px; line-height: 1.25; }

.status { min-height: 1.4em; margin: 12px 0 0; font-size: 15px; }

.status.warn { color: var(--warn); }

.code {
  font: 600 32px/1.2 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0.12em;
  margin: 8px 0 12px;
}

.scales { display: grid; gap: 12px; margin: 14px 0 8px; }

.scale {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.scale h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 500;
}

.scoreline {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  margin: 4px 0;
}

.scoreline strong {
  font-size: 28px;
  font-weight: 500;
}

.toc { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 16px; }

.toc a {
  color: var(--fg);
  font: 14px/1.2 ui-sans-serif, system-ui, sans-serif;
}

.error { color: var(--warn); margin: 0; }

.block { margin-top: 22px; }

body.admin main {
  width: min(64rem, 100%);
  margin: 0 auto;
  padding: 24px 16px 64px;
}

body.admin h1 { font-size: 36px; }

body.admin .narrow { width: min(28rem, 100%); }

.admin-bar, .admin-actions, .session-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.admin-actions { align-items: center; }

.admin-actions form { margin: 0; }

a.linkish, .session-top a {
  color: var(--fg);
  font: 15px/1.2 ui-sans-serif, system-ui, sans-serif;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 8px;
}

.stat strong {
  display: block;
  font-size: 40px;
  font-weight: 500;
  letter-spacing: -0.03em;
}

.split {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.split ul, .inline, .profile, .progress-list {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.inline { display: flex; flex-wrap: wrap; gap: 8px 16px; }

.session-list { display: grid; gap: 12px; margin-top: 16px; }

.profile, .progress-list { display: grid; gap: 4px; }

.progress-list { margin-top: 12px; }

.done { color: var(--accent); }

.open { color: var(--warn); }

@media (max-width: 800px) {
  .stats, .split { grid-template-columns: 1fr 1fr; }
  .admin-bar, .session-top { display: grid; }
}