:root {
  color-scheme: light;
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-alt: #eef2f7;
  --text: #18212f;
  --muted: #5d6878;
  --border: #d7dee8;
  --primary: #174ea6;
  --primary-dark: #103a7b;
  --danger: #a82424;
  --success: #216e39;
  --warning: #7a5000;
  --shadow: 0 6px 22px rgba(24, 33, 47, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.5; }
a { color: var(--primary); }
code { overflow-wrap: anywhere; }
.container { width: min(1180px, calc(100% - 2rem)); margin-inline: auto; }
.site-header { background: #14243b; color: #fff; border-bottom: 4px solid #2d6fc2; }
.header-row { min-height: 68px; display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; padding-block: .65rem; }
.brand { color: #fff; text-decoration: none; font-weight: 750; font-size: 1.15rem; }
nav { display: flex; gap: .9rem; flex: 1; }
nav a { color: #dce8f8; text-decoration: none; }
.user-menu { display: flex; align-items: center; gap: .75rem; font-size: .9rem; }
.user-menu form { margin: 0; }
.page-content { padding-block: 1.7rem 3rem; }
.site-footer { color: var(--muted); font-size: .85rem; padding-block: 1rem 2rem; }
h1, h2, h3 { line-height: 1.2; margin-top: 0; }
h1 { font-size: clamp(1.55rem, 3vw, 2.2rem); }
h2 { font-size: 1.25rem; }
.muted, .help-text, .status-note { color: var(--muted); }
.page-heading, .card-header-row, .exam-toolbar, .progress-row, .section-heading { display: flex; justify-content: space-between; gap: 1rem; align-items: flex-start; }

.card, .auth-card, .result-card, .question-card, .panel {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow);
}
.card, .panel { padding: 1.15rem; }
.auth-card, .result-card { max-width: 620px; margin: 2rem auto; padding: clamp(1.25rem, 4vw, 2rem); }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(285px, 1fr)); gap: 1rem; }
.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.metric strong { display: block; font-size: 2rem; }

label { display: block; font-weight: 650; margin: .85rem 0 .3rem; }
input, select, textarea {
  width: 100%; border: 1px solid #b8c3d1; border-radius: 7px; padding: .68rem .75rem; font: inherit; background: #fff; color: var(--text);
}
textarea { min-height: 100px; resize: vertical; }
input:focus, select:focus, textarea:focus, button:focus-visible, a:focus-visible { outline: 3px solid rgba(23, 78, 166, .25); outline-offset: 2px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 0 1rem; }
.checkbox-row { display: flex; align-items: center; gap: .55rem; font-weight: 500; }
.checkbox-row input { width: auto; }
.inline-form { display: flex; gap: .5rem; align-items: end; flex-wrap: wrap; }
.inline-form > * { flex: 1 1 140px; }

.button {
  display: inline-flex; justify-content: center; align-items: center; gap: .4rem; border: 0; border-radius: 7px; padding: .62rem .9rem;
  font: inherit; font-weight: 700; text-decoration: none; cursor: pointer;
}
.button-primary { background: var(--primary); color: #fff; }
.button-primary:hover { background: var(--primary-dark); }
.button-secondary { background: #e7edf5; color: #213248; }
.button-danger { background: var(--danger); color: #fff; }
.button-small { padding: .4rem .65rem; font-size: .85rem; }
.button-wide { width: 100%; margin-top: 1rem; }
button:disabled { opacity: .55; cursor: not-allowed; }

.flash-stack { display: grid; gap: .6rem; margin-bottom: 1rem; }
.flash { border-radius: 8px; padding: .8rem 1rem; border: 1px solid; }
.flash-success { background: #eaf6ed; border-color: #add5b8; color: #17572c; }
.flash-error { background: #fff0f0; border-color: #e4b2b2; color: #7f1d1d; }
.flash-warning { background: #fff7df; border-color: #e4cf8e; color: #684500; }
.flash-info { background: #edf5ff; border-color: #b7cfee; color: #173e70; }

.badge { display: inline-block; padding: .2rem .5rem; border-radius: 999px; font-size: .76rem; font-weight: 750; background: #e8edf4; }
.badge-published, .badge-active, .badge-approved { background: #e4f4e8; color: #1d6333; }
.badge-draft { background: #fff3d7; color: #745000; }
.badge-submitted { background: #e5efff; color: #164b8c; }
.badge-expired, .badge-retired, .badge-cancelled { background: #f0e9e9; color: #6b3030; }

.details-list { display: grid; gap: .55rem; margin: 1rem 0; }
.details-list div { display: grid; grid-template-columns: minmax(100px, .45fr) 1fr; gap: .6rem; }
dt { font-weight: 700; color: var(--muted); }
dd { margin: 0; }
.empty-state { padding: 2rem; text-align: center; background: var(--surface); border: 1px dashed #aeb9c8; border-radius: 10px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: .7rem .75rem; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { background: var(--surface-alt); font-size: .84rem; }
tr:last-child td { border-bottom: 0; }
.actions { display: flex; flex-wrap: wrap; gap: .45rem; }

.captcha-panel { margin-top: 1rem; padding: 1rem; border: 1px solid var(--border); background: var(--surface-alt); border-radius: 8px; }
.captcha-panel img { display: block; max-width: 100%; border: 1px solid #aeb8c5; }

.exam-toolbar { position: sticky; top: 0; z-index: 5; background: rgba(245,247,250,.97); padding: .75rem 0; }
.timer-panel { min-width: 190px; text-align: right; background: #14243b; color: #fff; border-radius: 9px; padding: .65rem .85rem; }
.timer-panel span, .timer-panel small { display: block; }
.timer-panel strong { display: block; font-size: 1.45rem; letter-spacing: .04em; }
.progress-row { margin: .5rem 0 1rem; align-items: center; }
.question-list { padding: 0; list-style: none; display: grid; gap: 1rem; }
.question-card { padding: 1rem; }
.question-card fieldset { border: 0; padding: 0; margin: 0; }
.question-card legend { width: 100%; font-weight: 650; }
.question-number { display: block; color: var(--primary); font-size: .86rem; margin-bottom: .35rem; }
.choice-list { display: grid; gap: .55rem; margin-top: .9rem; }
.choice-row { display: grid; grid-template-columns: auto 2rem 1fr; align-items: center; gap: .55rem; margin: 0; padding: .7rem; border: 1px solid var(--border); border-radius: 8px; font-weight: 500; cursor: pointer; }
.choice-row:hover { background: #f7faff; }
.choice-row:has(input:checked) { border-color: var(--primary); background: #edf4ff; }
.choice-row input { width: auto; margin: 0; }
.choice-letter { width: 1.8rem; height: 1.8rem; display: grid; place-items: center; border-radius: 50%; background: #e7edf5; font-weight: 800; }
.save-status { color: var(--muted); font-size: .84rem; margin-top: .55rem; }
.save-status.is-saving { color: var(--warning); }
.save-status.is-saved { color: var(--success); }
.save-status.is-error { color: var(--danger); }
.submit-panel { margin-top: 1.2rem; padding: 1.1rem; border: 1px solid #e3c0c0; background: #fff7f7; border-radius: 10px; }
.score-box { display: grid; justify-items: center; gap: .35rem; margin: 1.5rem 0; padding: 1.2rem; background: var(--surface-alt); border-radius: 10px; }
.score-box strong { font-size: 2rem; }
.result-pass { color: var(--success); font-weight: 800; }
.result-fail { color: var(--danger); font-weight: 800; }

.selection-list { max-height: 420px; overflow: auto; display: grid; gap: .35rem; padding: .5rem; border: 1px solid var(--border); border-radius: 8px; }
.selection-item { display: grid; grid-template-columns: auto 1fr; gap: .6rem; align-items: start; margin: 0; padding: .45rem; font-weight: 500; }
.selection-item input { width: auto; margin-top: .25rem; }
.split-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(330px, 1fr)); gap: 1rem; }

@media (max-width: 720px) {
  .header-row, .user-menu, .exam-toolbar, .page-heading { align-items: stretch; }
  nav { order: 3; width: 100%; overflow-x: auto; }
  .user-menu { margin-left: auto; }
  .exam-toolbar { display: block; }
  .timer-panel { margin-top: .7rem; text-align: left; }
  .details-list div { grid-template-columns: 1fr; gap: .1rem; }
}

.mt-1 { margin-top: 1rem; }

/* Multi-workspace identity */
.brand-group {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 13rem;
}

.workspace-label,
.workspace-kicker {
  color: var(--muted, #667085);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin: 0;
  text-transform: uppercase;
}

.site-footer {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.25rem;
  justify-content: space-between;
}