:root {
  --bg: #f3f5f9; --card: #ffffff; --text: #172033; --muted: #5b6577; --line: #dde2ea; --soft: #f7f9fc;
  --brand: #12305a; --brand-text: #ffffff; --accent: #0b63c4; --accent-soft: #e8f1fc; --accent-text: #ffffff;
  --ok: #1f8a4c; --danger: #b42318; --banner: #fff4d6; --banner-text: #6b4e00;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 4px 16px rgba(16, 24, 40, .06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141c; --card: #171d27; --text: #e7ebf2; --muted: #9aa4b5; --line: #2a3342; --soft: #1b2230;
    --brand: #0c1b33; --accent: #5b9cf0; --accent-soft: #1a2b45; --accent-text: #0b1220;
    --ok: #5cc98c; --danger: #ff8a7a; --banner: #3a3010; --banner-text: #f3d98a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4);
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif; background: var(--bg); color: var(--text); }
h1, h2, h3 { line-height: 1.25; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); font-size: 13px; }
.small { font-size: 12px; }
.error { color: var(--danger); margin: 12px 0 0; }

.test-banner { background: var(--banner); color: var(--banner-text); padding: 6px 16px; font-size: 12.5px; text-align: center; }

/* Header */
.site-header { background: var(--brand); color: var(--brand-text); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; }
.brand-mark { width: 30px; height: 30px; color: #4f9dff; flex: none; }
.brand strong { display: block; font-size: 17px; letter-spacing: .2px; }
.brand small { display: block; font-size: 12px; opacity: .75; }
.header-tools { display: flex; align-items: center; gap: 12px; }
.session-pill { font-size: 12.5px; padding: 4px 10px; border-radius: 999px; background: rgba(255, 255, 255, .12); white-space: nowrap; }
.session-pill:empty { display: none; }
.test-controls { position: relative; font-size: 13px; }
.test-controls summary { cursor: pointer; list-style: none; padding: 4px 10px; border: 1px solid rgba(255, 255, 255, .3); border-radius: 6px; }
.test-controls summary::-webkit-details-marker { display: none; }
.test-panel { position: absolute; right: 0; top: calc(100% + 8px); z-index: 20; width: 300px; background: var(--card); color: var(--text); border: 1px solid var(--line); border-radius: 10px; box-shadow: var(--shadow); padding: 12px; display: grid; gap: 10px; }
.test-panel label { display: grid; gap: 4px; font-size: 12.5px; color: var(--muted); }
.test-buttons { display: flex; gap: 8px; flex-wrap: wrap; }

/* Title band */
.hero { background: var(--card); border-bottom: 1px solid var(--line); padding: 18px 0 20px; }
.crumbs { margin: 0 0 6px; font-size: 12.5px; color: var(--muted); }
.crumbs span { margin: 0 6px; }
.hero h1 { margin: 0 0 8px; font-size: 26px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: 13px; color: var(--muted); }
.hero-meta strong { color: var(--text); font-variant-numeric: tabular-nums; }

/* Steps + panel */
.layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 24px; align-items: start; padding-top: 24px; padding-bottom: 48px; }
.stepper-wrap { position: sticky; top: 16px; }
.stepper { list-style: none; margin: 0; padding: 14px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); }
.stepper li { display: flex; align-items: center; gap: 10px; padding: 8px 6px; color: var(--muted); font-size: 14px; position: relative; }
.stepper li + li::before { content: ""; position: absolute; left: 19px; top: -10px; height: 14px; border-left: 2px solid var(--line); }
.stepper .num { width: 26px; height: 26px; flex: none; display: grid; place-items: center; border-radius: 50%; border: 2px solid var(--line); font-size: 12.5px; font-weight: 600; background: var(--card); }
.stepper li.done { color: var(--text); }
.stepper li.done .num { background: var(--ok); border-color: var(--ok); color: #fff; }
.stepper li.current { color: var(--accent); font-weight: 600; }
.stepper li.current .num { border-color: var(--accent); background: var(--accent); color: var(--accent-text); }

.panel { background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 24px 28px 0; }
.step-count { margin: 0; font-size: 12.5px; color: var(--muted); text-transform: uppercase; letter-spacing: .6px; }
.panel h2 { margin: 4px 0 8px; font-size: 22px; }

.block { border-top: 1px solid var(--line); padding: 18px 0 6px; }
.block h3 { margin: 0 0 12px; font-size: 15.5px; }
.block .field { max-width: 560px; }
.field { margin: 0 0 16px; }
.field > label, .field .label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.field label.inline { display: inline-flex; gap: 8px; align-items: center; margin-right: 18px; font-weight: 400; }
.req { color: var(--danger); }
input[type=text], input[type=date], input[type=password], select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--text); font: inherit;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
select[multiple] { height: 110px; }
input[type=file] { font: inherit; font-size: 13.5px; }
.captcha { display: block; margin-bottom: 8px; border-radius: 6px; border: 1px solid var(--line); }
.files { margin-top: 4px; }

/* Custom widgets (version C) */
.cards { display: flex; flex-wrap: wrap; gap: 8px; }
.card-option { padding: 9px 16px; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; user-select: none; background: var(--card); }
.card-option:hover { border-color: var(--accent); }
.card-option[aria-checked=true] { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.combo { position: relative; }
.combo-list { position: absolute; z-index: 5; left: 0; right: 0; margin: 4px 0 0; padding: 4px 0; list-style: none; background: var(--card); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); max-height: 220px; overflow: auto; }
.combo-list li { padding: 8px 12px; cursor: pointer; }
.combo-list li:hover { background: var(--soft); }
.dateparts { display: flex; gap: 8px; }
.dateparts select { flex: 1; }

/* Buttons and the action bar */
button { font: inherit; font-size: 14px; padding: 9px 16px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--text); cursor: pointer; }
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }
button.primary:hover { filter: brightness(1.05); }
button.ghost { border-color: transparent; background: transparent; color: var(--accent); }
button:disabled { opacity: .45; cursor: default; }
.actions { position: sticky; bottom: 0; display: flex; align-items: center; gap: 10px; margin: 24px -28px 0; padding: 14px 28px; background: var(--soft); border-top: 1px solid var(--line); border-radius: 0 0 12px 12px; }
.actions .spacer { flex: 1; }
.done { font-size: 17px; padding: 24px 0; }

.overlay { position: fixed; inset: 0; background: rgba(10, 16, 28, .5); display: grid; place-items: center; padding: 16px; z-index: 50; }
.dialog { background: var(--card); border-radius: 12px; padding: 24px; max-width: 420px; box-shadow: var(--shadow); }

/* Login page */
.login-layout { display: grid; grid-template-columns: minmax(0, 1fr) 420px; gap: 28px; padding-top: 28px; padding-bottom: 48px; align-items: start; }
.info-card, .login-card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 24px; }
.info-card h2, .login-card h2 { margin: 0 0 8px; font-size: 19px; }
.checklist { margin: 12px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.checklist li { display: flex; gap: 10px; }
.checklist li::before { content: "✓"; color: var(--ok); font-weight: 700; }
.tabs { display: flex; border-bottom: 1px solid var(--line); margin: 14px 0 18px; }
.tab { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 8px 12px; color: var(--muted); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.stack { display: grid; gap: 8px; }
.stack label { font-weight: 600; font-size: 14px; }
.wide { width: 100%; }
.qr { width: 172px; height: 172px; margin: 6px auto 12px; background: repeating-conic-gradient(var(--text) 0 25%, var(--card) 0 50%) 0 0 / 20px 20px; border: 10px solid var(--card); outline: 1px solid var(--line); border-radius: 6px; }
.center { text-align: center; }

@media (max-width: 860px) {
  .layout, .login-layout { grid-template-columns: 1fr; }
  .stepper-wrap { position: static; }
  .stepper { display: flex; overflow-x: auto; gap: 4px; }
  .stepper li { flex: none; }
  .stepper li + li::before { display: none; }
  .panel { padding: 18px 16px 0; }
  .actions { margin: 20px -16px 0; padding: 12px 16px; flex-wrap: wrap; }
  .session-pill { display: none; }
}