/* ============================================================
   Assessment platform — design system
   Display: Space Grotesk · Body: Inter · Instrument: JetBrains Mono
   ============================================================ */

:root {
  --ink:        #16202b;
  --ink-soft:   #55637a;
  --ink-faint:  #8a95a6;
  --paper:      #e9ecf0;
  --surface:    #ffffff;
  --surface-2:  #f4f6f8;
  --line:       #d9dee5;
  --line-strong:#c2cad4;
  --accent:     #0f766e;
  --accent-ink: #0a544e;
  --accent-soft:#d8ebe8;
  --amber:      #b45309;
  --amber-soft: #fbe6d0;
  --green:      #15803d;
  --red:        #b4231c;
  --red-soft:   #f7dedc;

  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(22,32,43,.06), 0 8px 24px rgba(22,32,43,.06);
  --shadow-lg: 0 12px 40px rgba(22,32,43,.14);

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 90% -10%, #eef2f5 0%, transparent 60%),
    var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; margin: 0; }

a { color: var(--accent-ink); }

/* ---------- Shared shells ---------- */

.centered {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 32px 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-soft);
}
.brand .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

/* ---------- Buttons ---------- */

.btn {
  font-family: var(--font-body);
  font-size: 15px; font-weight: 550;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .04s ease, background .15s ease, border-color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 3px solid var(--accent-soft); outline-offset: 2px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); }
.btn-ghost { background: var(--surface); border-color: var(--line-strong); color: var(--ink); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-danger { background: var(--surface); border-color: var(--line-strong); color: var(--red); }
.btn-danger:hover { background: var(--red-soft); border-color: var(--red); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-sm { padding: 7px 12px; font-size: 13px; }

/* ---------- Forms ---------- */

label { display: block; font-size: 13px; font-weight: 550; color: var(--ink-soft); margin-bottom: 6px; }

input[type="text"], input[type="email"], input[type="password"], select, textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink);
  padding: 11px 13px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.mono-input { font-family: var(--font-mono); letter-spacing: 0.04em; }

.field { margin-bottom: 16px; }

.note { font-size: 13px; color: var(--ink-soft); }
.error {
  font-size: 13px; color: var(--red);
  background: var(--red-soft); border: 1px solid #eebfbb;
  padding: 9px 12px; border-radius: var(--radius-sm);
}
.hidden { display: none !important; }

/* ---------- Pills / tags ---------- */

.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em;
  text-transform: uppercase;
  padding: 3px 9px; border-radius: 999px;
  border: 1px solid var(--line-strong); color: var(--ink-soft);
  background: var(--surface-2);
}
.pill.is-issued  { color: var(--ink-soft); }
.pill.is-started { color: var(--amber); background: var(--amber-soft); border-color: #eecfa5; }
.pill.is-submitted { color: var(--green); background: #dcf0e2; border-color: #b6dcc0; }
.pill.is-revoked { color: var(--red); background: var(--red-soft); border-color: #eebfbb; }

/* ============================================================
   Candidate — landing
   ============================================================ */

.landing { width: min(460px, 100%); padding: 34px; }
.landing h1 { font-size: 26px; margin: 18px 0 6px; }
.landing .sub { color: var(--ink-soft); margin-bottom: 26px; }

.meta-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  margin: 22px 0;
}
.meta-cell {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 12px 14px; background: var(--surface-2);
}
.meta-cell .k { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-faint); }
.meta-cell .v { font-family: var(--font-mono); font-size: 20px; color: var(--ink); margin-top: 3px; }

.instructions {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  padding: 12px 14px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14px; color: var(--accent-ink); margin: 18px 0;
}

/* ============================================================
   Candidate — exam runner
   ============================================================ */

.exam-shell { display: flex; flex-direction: column; min-height: 100vh; }

.exam-top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 22px;
  background: rgba(255,255,255,.86); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.exam-top .title { font-family: var(--font-display); font-weight: 600; font-size: 16px; }
.exam-top .title small { display: block; font-family: var(--font-mono); font-size: 11px; color: var(--ink-faint); font-weight: 400; letter-spacing: .05em; }

.timer {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 22px; font-weight: 500;
  padding: 6px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong); background: var(--surface);
  font-variant-numeric: tabular-nums;
}
.timer .tlabel { font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); }
.timer.warn { color: var(--amber); border-color: #e7c98d; background: var(--amber-soft); }
.timer.critical { color: #fff; background: var(--red); border-color: var(--red); animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: .72; } }

.exam-body {
  flex: 1;
  display: grid; grid-template-columns: 216px 1fr;
  gap: 28px; max-width: 1040px; width: 100%;
  margin: 0 auto; padding: 26px 22px 120px;
}

.navigator { position: sticky; top: 84px; align-self: start; max-height: calc(100vh - 110px); overflow-y: auto; padding-right: 4px; }
.navigator h2 { font-size: 12px; text-transform: uppercase; letter-spacing: .09em; color: var(--ink-faint); margin-bottom: 12px; }
.nav-group-head { font-family: var(--font-mono); font-size: 10px; letter-spacing: .05em; text-transform: uppercase; color: var(--ink-faint); margin: 14px 0 6px; }
.nav-group-head:first-child { margin-top: 0; }
.nav-dots { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.nav-dot {
  aspect-ratio: 1; display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 13px;
  border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  background: var(--surface); cursor: pointer; color: var(--ink-soft);
  transition: border-color .12s, background .12s;
}
.nav-dot:hover { border-color: var(--accent); }
.nav-dot.answered { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }
.nav-dot.current { outline: 2px solid var(--accent); outline-offset: 1px; }

.question-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 30px 32px; }
.q-index { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; color: var(--ink-faint); text-transform: uppercase; }
.q-index .q-cat { display: block; color: var(--accent); letter-spacing: .12em; margin-bottom: 4px; }
.q-index .pts { color: var(--ink-faint); margin-left: 10px; text-transform: none; letter-spacing: 0; }
.q-prompt { font-size: 19px; line-height: 1.45; margin: 12px 0 22px; font-family: var(--font-display); font-weight: 500; white-space: pre-wrap; }

.option {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 16px; margin-bottom: 10px;
  border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  cursor: pointer; transition: border-color .12s, background .12s;
}
.option:hover { border-color: var(--accent); background: var(--surface-2); }
.option.selected { border-color: var(--accent); background: var(--accent-soft); }
.option input { margin-top: 3px; accent-color: var(--accent); width: auto; }
.option .otext { flex: 1; }

textarea.answer-area { min-height: 200px; resize: vertical; line-height: 1.6; }
textarea.answer-area.code { font-family: var(--font-mono); font-size: 14px; }

.exam-footer {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 22px; background: rgba(255,255,255,.9); backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
}
.autosave { font-family: var(--font-mono); font-size: 12px; color: var(--ink-faint); }
.autosave.saving { color: var(--amber); }
.autosave.saved { color: var(--green); }
.footer-actions { display: flex; gap: 10px; }

/* ============================================================
   Admin
   ============================================================ */

.admin-wrap { max-width: 1100px; margin: 0 auto; padding: 26px 22px 80px; }
.admin-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 20px; border-bottom: 1px solid var(--line); margin-bottom: 26px; }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px 24px; margin-bottom: 22px; }
.panel h2 { font-size: 17px; margin-bottom: 4px; }
.panel .panel-sub { font-size: 13px; color: var(--ink-soft); margin-bottom: 18px; }

.issue-row { display: grid; grid-template-columns: 1.4fr 1.2fr 1fr auto; gap: 12px; align-items: end; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-faint); font-weight: 500; padding: 10px 12px; border-bottom: 1px solid var(--line); }
td { padding: 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--surface-2); }
.cand-name { font-weight: 550; }
.cand-email { font-size: 12px; color: var(--ink-faint); }
.score-cell { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.token-chip {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12px;
  background: var(--surface-2); border: 1px solid var(--line-strong);
  padding: 5px 9px; border-radius: var(--radius-sm);
}
.copy-btn { border: none; background: none; cursor: pointer; color: var(--accent); font-size: 12px; padding: 0; font-family: var(--font-mono); }

/* Result modal */
.modal-backdrop { position: fixed; inset: 0; background: rgba(22,32,43,.42); display: grid; place-items: center; padding: 24px; z-index: 50; }
.modal { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow-lg); width: min(760px, 100%); max-height: 88vh; overflow: auto; }
.modal-head { position: sticky; top: 0; background: var(--surface); border-bottom: 1px solid var(--line); padding: 20px 24px; display: flex; justify-content: space-between; align-items: flex-start; }
.modal-body { padding: 22px 24px; }
.result-q { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px; margin-bottom: 14px; }
.result-q .rq-prompt { font-weight: 550; margin: 6px 0 10px; white-space: pre-wrap; }
.answer-block { font-family: var(--font-mono); font-size: 13px; white-space: pre-wrap; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px; }
.badge-correct { color: var(--green); font-family: var(--font-mono); font-size: 12px; }
.badge-wrong { color: var(--red); font-family: var(--font-mono); font-size: 12px; }
.opt-line { padding: 2px 0; }
.opt-line.key { color: var(--green); font-weight: 600; }
.opt-line.chosen-wrong { color: var(--red); }

.score-summary { display: flex; gap: 22px; font-family: var(--font-mono); margin-bottom: 18px; flex-wrap: wrap; }
.score-summary .box { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 10px 16px; }
.score-summary .box .k { font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-faint); }
.score-summary .box .v { font-size: 22px; }

.empty { text-align: center; color: var(--ink-faint); padding: 40px 20px; font-size: 14px; }

/* ---------- Competency dashboard ---------- */
.dash-controls { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.dash-controls select { max-width: 320px; }
.legend { display: flex; gap: 14px; align-items: center; font-size: 12px; color: var(--ink-soft); flex-wrap: wrap; }
.legend .swatch { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; border: 1px solid rgba(0,0,0,.08); }

.heatmap-scroll { overflow-x: auto; }
table.heatmap { border-collapse: separate; border-spacing: 3px; }
table.heatmap th.field-col {
  writing-mode: vertical-rl; transform: rotate(180deg);
  white-space: nowrap; font-size: 11px; text-transform: none; letter-spacing: .02em;
  padding: 8px 4px; vertical-align: bottom; color: var(--ink-soft); border: none; height: 118px;
}
table.heatmap th.corner, table.heatmap th.overall-col { border: none; vertical-align: bottom; padding: 8px; }
table.heatmap th.overall-col { writing-mode: vertical-rl; transform: rotate(180deg); font-size: 11px; }
table.heatmap td { border: none; padding: 0; }
table.heatmap td.name-cell { padding: 6px 12px 6px 4px; white-space: nowrap; }

.hcell {
  min-width: 46px; height: 40px; border-radius: 6px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 13px; color: #12241d; cursor: pointer;
  line-height: 1.1; border: 1px solid rgba(0,0,0,.06);
}
.hcell .lvl { font-size: 9px; letter-spacing: .04em; opacity: .8; margin-top: 1px; }
.hcell.overall { font-weight: 600; }
.hcell.empty-cell { background: var(--surface-2); color: var(--ink-faint); cursor: default; }

/* competency letter badge */
.comp {
  display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 5px;
  font-family: var(--font-mono); font-size: 11px; font-weight: 600; color: #fff;
}
.comp-none { background: #b9c0cb; color: #34414f; }
.comp-basic { background: #6d8f2f; }
.comp-intermediate { background: #2f8f83; }
.comp-advanced { background: #1f6f9c; }
.comp-label { font-size: 12px; color: var(--ink-soft); }

/* ---------- Field × level matrix (in modal) ---------- */
.matrix { width: 100%; border-collapse: separate; border-spacing: 4px; margin: 6px 0 20px; }
.matrix th { font-family: var(--font-mono); font-size: 10px; letter-spacing: .05em; text-transform: uppercase; color: var(--ink-faint); font-weight: 500; padding: 4px 6px; border: none; text-align: center; }
.matrix th.rowlabel, .matrix td.rowlabel { text-align: left; font-family: var(--font-body); font-size: 13px; font-weight: 550; color: var(--ink); white-space: nowrap; padding-right: 10px; text-transform: none; letter-spacing: 0; }
.matrix td { padding: 0; border: none; }
.mcell {
  height: 38px; border-radius: 6px; display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 12px; color: #12241d; border: 1px solid rgba(0,0,0,.06);
}
.mcell.na { background: var(--surface-2); color: var(--ink-faint); }
.matrix td.comp-cell { text-align: center; }

/* ---------- Admin: test candidates, exports, assessment editor ---------- */
.pill.is-test { color: #7c5c00; background: #fdf2d0; border-color: #ecd9a0; font-size: 10px; padding: 1px 7px; vertical-align: 2px; }

.check-row { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-soft); font-weight: 400; cursor: pointer; }
.check-row input { width: auto; accent-color: var(--accent); }

.export-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); }

.editor-modal { width: min(940px, 100%); }
.editor-warning {
  background: var(--amber-soft); border: 1px solid #ecd9a0; color: #7c5c00;
  border-radius: var(--radius-sm); padding: 10px 14px; font-size: 13px; margin-bottom: 16px;
}
.editor-top { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; margin-bottom: 18px; }

.q-card { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 16px; margin-bottom: 12px; background: var(--surface); }
.q-card textarea { width: 100%; resize: vertical; }
.q-card-head { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.q-card-head .q-num { font-family: var(--font-mono); font-size: 12px; color: var(--ink-faint); min-width: 30px; }
.q-card-head input[type="number"] { text-align: right; }
.q-tools { display: flex; gap: 4px; margin-left: auto; }

.opt-list { margin-top: 10px; display: flex; flex-direction: column; gap: 6px; }
.opt-row { display: flex; align-items: center; gap: 10px; }
.opt-row input[type="radio"], .opt-row input[type="checkbox"] { width: auto; accent-color: var(--green); flex-shrink: 0; }
.opt-row input[type="text"] { flex: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 780px) {
  .exam-body { grid-template-columns: 1fr; }
  .navigator { position: static; order: 2; }
  .issue-row { grid-template-columns: 1fr; }
  .meta-grid { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}