/* ─────────────────────────────────────────────────
   CSS CUSTOM PROPERTIES  (Light + Dark themes)
───────────────────────────────────────────────── */
:root {
  --bg:            #f4f6f9;
  --surface:       #ffffff;
  --surface2:      #f0f2f5;
  --border:        #dde1e9;
  --text:          #1a1d23;
  --text-muted:    #6b7280;
  --primary:       #1d4ed8;
  --primary-dark:  #1e40af;
  --primary-light: #dbeafe;
  --danger:        #dc2626;
  --danger-light:  #fee2e2;
  --warn:          #d97706;
  --warn-light:    #fef3c7;
  --success:       #16a34a;
  --success-light: #dcfce7;
  --blue-box:      #eff6ff;
  --blue-box-b:    #3b82f6;
  --yellow-box:    #fffbeb;
  --yellow-box-b:  #f59e0b;
  --green-box:     #f0fdf4;
  --green-box-b:   #22c55e;
  --red-box:       #fff1f2;
  --red-box-b:     #f43f5e;
  --topbar-h:      56px;
  --sidebar-w:     220px;
  --bottom-h:      40px;
  --radius:        10px;
  --radius-sm:     6px;
  --shadow:        0 1px 4px rgba(0,0,0,.10);
  --shadow-md:     0 4px 16px rgba(0,0,0,.14);
  --font:          'Inter', system-ui, sans-serif;
  --transition:    .18s ease;
}

[data-theme="dark"] {
  --bg:            #0f1117;
  --surface:       #1a1d27;
  --surface2:      #22263a;
  --border:        #2e3347;
  --text:          #e8eaf2;
  --text-muted:    #8b90a8;
  --primary:       #3b82f6;
  --primary-dark:  #2563eb;
  --primary-light: #1e3a5f;
  --danger:        #ef4444;
  --danger-light:  #3b1515;
  --warn:          #f59e0b;
  --warn-light:    #3b2e08;
  --success:       #22c55e;
  --success-light: #0f3020;
  --blue-box:      #1e3a5f;
  --blue-box-b:    #3b82f6;
  --yellow-box:    #3b2e08;
  --yellow-box-b:  #f59e0b;
  --green-box:     #0f3020;
  --green-box-b:   #22c55e;
  --red-box:       #3b1520;
  --red-box-b:     #f43f5e;
}

/* ─────────────────────────────────────────────────
   RESET & BASE
───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 15px;
  background: var(--bg);
  color: var(--text);
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; }
img { max-width: 100%; border-radius: var(--radius-sm); }

/* ─────────────────────────────────────────────────
   SCREENS
───────────────────────────────────────────────── */
.screen { display: none; min-height: 100vh; }
.screen.active { display: block; }
#screen-home.active    { display: block; }
#screen-test.active    { display: block; }
#screen-results.active { display: block; }

/* ─────────────────────────────────────────────────
   BUTTONS
───────────────────────────────────────────────── */
.btn-primary, .btn-secondary, .btn-danger, .btn-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform .1s;
}
.btn-primary:hover  { transform: translateY(-1px); }
.btn-secondary:hover{ transform: translateY(-1px); }
.btn-primary   { background: var(--primary);   color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
.btn-danger    { background: var(--danger);    color: #fff; }
.btn-sm        { padding: 6px 14px; font-size: 13px; }
.btn-icon {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 16px;
  color: var(--text);
  transition: background var(--transition);
}
.btn-icon:hover { background: var(--surface2); }

/* ─────────────────────────────────────────────────
   HOME SCREEN
───────────────────────────────────────────────── */
.home-wrapper {
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 24px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}
.home-brand { text-align: center; }
.brand-logo { font-size: 56px; line-height: 1; margin-bottom: 12px; }
.brand-logo-img {
  height: 80px;
  width: auto;
  max-width: 240px;
  object-fit: contain;
  margin-bottom: 12px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}
.home-brand h1 { font-size: 32px; font-weight: 700; color: var(--text); }
.brand-sub { color: var(--text-muted); margin-top: 6px; font-size: 15px; }

.test-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
  width: 100%;
}
.test-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.test-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--primary);
}
.test-card-icon  { font-size: 28px; margin-bottom: 10px; }
.test-card-title { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.test-card-meta  { font-size: 13px; color: var(--text-muted); display: flex; gap: 12px; flex-wrap: wrap; }
.test-card-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  background: var(--primary-light);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 20px;
  margin-top: 8px;
}
.test-card-done .test-card-badge { background: var(--success-light); color: var(--success); }

/* ─────────────────────────────────────────────────
   ENHANCED TEST CARD — 3D hover reveal
───────────────────────────────────────────────── */
.tc-enhanced {
  position: relative;
  overflow: visible;
  min-height: 148px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.tc-default {
  position: relative;
  z-index: 1;
  transition: opacity 0.22s, transform 0.22s;
}
.tc-hover {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: stretch;
  opacity: 0;
  pointer-events: none;
  overflow: visible;
  transition: opacity 0.22s;
  border-radius: var(--radius);
  background: var(--surface);
}
@media (hover: hover) {
  .tc-enhanced:hover { z-index: 20; box-shadow: 0 16px 48px rgba(0,0,0,0.20); transform: translateY(-3px); }
  .tc-enhanced:hover .tc-default { opacity: 0; transform: translateY(-4px) scale(0.96); pointer-events: none; }
  .tc-enhanced:hover .tc-hover { opacity: 1; pointer-events: auto; }
}
.tc-details {
  flex: 1;
  padding: 13px 11px 13px 14px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  overflow: hidden;
  transform: translateX(-10px);
  transition: transform 0.3s 0.06s;
}
@media (hover: hover) {
  .tc-enhanced:hover .tc-details { transform: translateX(0); }
}
.tc-h-title { font-size: 13px; font-weight: 700; color: var(--text); line-height: 1.3; }
.tc-h-summary {
  font-size: 10.5px; color: var(--text-muted); line-height: 1.45;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.tc-h-meta { display: flex; gap: 8px; font-size: 11px; color: var(--text-muted); flex-wrap: wrap; }
.tc-scores { display: flex; gap: 5px; margin-top: 2px; }
.tc-score {
  flex: 1; background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 4px 5px; text-align: center;
}
.sc-lbl { display: block; font-size: 9px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.6px; }
.sc-val { display: block; font-size: 15px; font-weight: 700; line-height: 1.2; }
.tc-score.avg .sc-val { color: var(--primary); }
.tc-score.min .sc-val { color: var(--warn); }
.tc-score.max .sc-val { color: var(--success); }
.tc-no-hist { font-size: 11px; color: var(--text-muted); font-style: italic; }
.tc-badge-primary {
  background: var(--primary) !important; color: #fff !important;
  font-size: 11px !important; padding: 4px 10px !important;
  margin-top: auto; align-self: flex-start;
}
.tc-img-wrap {
  width: 78px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  transform: perspective(480px) rotateY(-22deg) translateX(0px) translateZ(0px);
  transform-origin: left center;
  transition: transform 0.42s cubic-bezier(0.34, 1.46, 0.64, 1);
}
@media (hover: hover) {
  .tc-enhanced:hover .tc-img-wrap {
    transform: perspective(480px) rotateY(-6deg) translateX(50px) translateZ(46px);
  }
}
.tc-thumb {
  width: 74px; height: 94px; object-fit: cover;
  border-radius: 10px;
  box-shadow: -8px 6px 22px rgba(0,0,0,0.28), 0 2px 6px rgba(0,0,0,0.12);
  display: block;
}

.home-footer { display: flex; gap: 10px; }

/* ─────────────────────────────────────────────────
   SITE FOOTER
───────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 14px 24px;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background: var(--surface);
  width: 100%;
  display: block;
  box-sizing: border-box;
}

/* ─────────────────────────────────────────────────
   INSTRUCTIONS SCREEN
───────────────────────────────────────────────── */
#screen-instructions {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}
#screen-instructions.active {
  display: flex;
}
.instr-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 40px;
  max-width: 640px;
  width: 100%;
  box-shadow: var(--shadow-md);
}
.instr-card h2  { font-size: 22px; font-weight: 700; margin-bottom: 20px; }
.instr-list     { padding-left: 20px; display: flex; flex-direction: column; gap: 10px; }
.instr-list li  { font-size: 15px; line-height: 1.6; }
.instr-actions  { display: flex; gap: 12px; margin-top: 28px; justify-content: flex-end; }

/* ─────────────────────────────────────────────────
   TOPBAR
───────────────────────────────────────────────── */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 18px;
  gap: 12px;
  z-index: 100;
  box-shadow: var(--shadow);
}
.topbar-left  { display: flex; align-items: center; gap: 10px; flex: 1; }
.topbar-center{ display: flex; align-items: center; justify-content: center; flex: 1; }
.topbar-right { display: flex; align-items: center; gap: 10px; flex: 1; justify-content: flex-end; }
.topbar-title { font-weight: 700; font-size: 16px; }
.section-badge {
  font-size: 12px;
  font-weight: 600;
  background: var(--primary-light);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 20px;
}
.timer-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 5px 14px;
}
.timer-display {
  font-size: 18px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: .03em;
}
.timer-warn  .timer-display { color: var(--warn); }
.timer-danger.timer-display { color: var(--danger); }

/* ─────────────────────────────────────────────────
   TEST LAYOUT (sidebar + content)
───────────────────────────────────────────────── */
#screen-test { padding-top: var(--topbar-h); padding-bottom: var(--bottom-h); }
.test-layout {
  display: flex;
  min-height: calc(100vh - var(--topbar-h) - var(--bottom-h));
}

/* SIDEBAR */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h) - var(--bottom-h));
  overflow-y: auto;
  transition: width var(--transition), min-width var(--transition);
}
.sidebar.collapsed { width: 0; min-width: 0; overflow: hidden; }
.sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  font-weight: 600;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--surface);
  z-index: 1;
}
.sidebar-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  cursor: pointer;
  font-size: 12px;
  color: var(--text-muted);
}
.section-tabs {
  display: flex;
  gap: 4px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.section-tab {
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface2);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition);
}
.section-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.q-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 5px;
  padding: 10px;
}
.q-btn {
  aspect-ratio: 1;
  border: none;
  border-radius: 5px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  background: var(--surface2);
  color: var(--text-muted);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.q-btn.current  { background: var(--primary);    color: #fff; border-color: var(--primary); }
.q-btn.answered { background: var(--success);    color: #fff; border-color: var(--success); }
.q-btn.flagged  { background: var(--warn);       color: #fff; border-color: var(--warn); }
.q-btn.answered.flagged { background: var(--warn); }

.legend { padding: 10px 12px; display: flex; flex-direction: column; gap: 5px; }
.legend-item { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--text-muted); }
.dot {
  width: 10px; height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}
.dot-current  { background: var(--primary); }
.dot-answered { background: var(--success); }
.dot-flagged  { background: var(--warn); }
.dot-blank    { background: var(--surface2); border: 1px solid var(--border); }

/* CONTENT AREA */
.content-area {
  flex: 1;
  padding: 20px 28px;
  max-width: calc(100% - var(--sidebar-w));
  overflow-y: auto;
}

/* AUDIO PANEL */
.audio-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 22px;
  box-shadow: var(--shadow);
}
.audio-inner { max-width: 640px; margin: 0 auto; }
.audio-title { font-weight: 700; font-size: 14px; margin-bottom: 10px; color: var(--text-muted); }
audio { display: none; }
.audio-controls { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.ac-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 7px 14px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  transition: background var(--transition);
}
.ac-btn:hover { background: var(--primary-light); }
.ac-play { background: var(--primary); color: #fff; border-color: var(--primary); flex: 1; justify-content: center; }
.ac-play:hover { background: var(--primary-dark); }
.audio-progress-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.audio-seek {
  flex: 1;
  height: 4px;
  accent-color: var(--primary);
  cursor: pointer;
}
.audio-time { font-size: 12px; color: var(--text-muted); font-variant-numeric: tabular-nums; width: 36px; }
.audio-speed-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}
.speed-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text-muted);
}
.speed-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* SECTION HEADER */
.section-header-block {
  margin-bottom: 18px;
}
.section-header-block h2 { font-size: 20px; font-weight: 700; }
.section-header-block p  { font-size: 14px; color: var(--text-muted); margin-top: 4px; }

/* QUESTION GROUPS */
.question-groups { display: flex; flex-direction: column; gap: 24px; }

.q-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

/* Instruction box colour variants */
.q-group-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  background: var(--blue-box);
}
.q-group-header.yellow { border-left-color: var(--yellow-box-b); background: var(--yellow-box); }
.q-group-header.green  { border-left-color: var(--green-box-b);  background: var(--green-box); }
.q-group-header.red    { border-left-color: var(--red-box-b);    background: var(--red-box); }

.q-group-header h3 { font-size: 14px; font-weight: 700; margin-bottom: 3px; }
.q-group-header .q-range { font-size: 13px; color: var(--text-muted); }
.q-group-instructions {
  font-size: 13.5px;
  margin-top: 6px;
  line-height: 1.55;
}

.q-group-body { padding: 18px; }

/* ── IMAGE BLOCK (maps, diagrams, flowcharts) ── */
.q-image-wrap {
  margin-bottom: 18px;
  text-align: center;
}
.q-image-wrap img {
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.q-image-caption {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ── TABLE layout ── */
.q-table-wrap { overflow-x: auto; margin-bottom: 16px; }
.q-table {
  border-collapse: collapse;
  width: 100%;
  font-size: 14px;
}
.q-table th, .q-table td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
  vertical-align: middle;
}
.q-table th { background: var(--surface2); font-weight: 600; }
.q-table td input[type="text"] { width: 100%; }

/* ── FORM COMPLETION layout ── */
.q-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}
@media (max-width: 600px) { .q-form-grid { grid-template-columns: 1fr; } }

/* ── NOTE / SUMMARY COMPLETION ── */
.q-note-block {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.9;
  margin-bottom: 12px;
}
/* Tables embedded inside note/form completion blocks */
.q-note-block table {
  border-collapse: collapse;
  width: 100%;
  margin: 10px 0;
  font-size: 13px;
}
.q-note-block table th,
.q-note-block table td {
  border: 1px solid var(--border);
  padding: 7px 10px;
  vertical-align: middle;
  text-align: left;
}
.q-note-block table th {
  background: var(--surface);
  font-weight: 600;
  color: var(--text);
}
.q-note-block table td input.q-blank {
  width: 100%;
  min-width: 80px;
}

/* ── IMAGE PLACEHOLDER (when map/diagram image is missing) ── */
.q-image-placeholder {
  background: var(--surface2);
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 24px 20px;
  text-align: center;
  margin-bottom: 16px;
  color: var(--text-muted);
}
.q-image-placeholder-icon { font-size: 36px; margin-bottom: 8px; }
.q-image-placeholder-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.q-image-placeholder-hint { font-size: 12px; line-height: 1.6; }

/* ── PDF NOTE BANNER (for sections with unavailable question text) ── */
.q-pdf-note {
  background: var(--yellow-box);
  border: 1px solid var(--yellow-box-b);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 14px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.5;
}
.q-pdf-note span { font-size: 16px; flex-shrink: 0; }

/* ── FLOWCHART STEPS (note_completion with flow-chart layout) ── */
.flowchart-steps {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin: 10px 0 4px;
  width: 100%;
}
.fc-step {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  padding: 10px 18px;
  font-size: 14px;
  width: 100%;
  max-width: 520px;
  text-align: center;
  line-height: 1.6;
}
.fc-nonum {
  background: var(--surface2);
  color: var(--text-muted);
  font-style: italic;
}
.fc-arrow {
  font-size: 20px;
  color: var(--text-muted);
  line-height: 1.4;
  user-select: none;
}
/* Inputs inside flowchart steps */
.fc-step .q-blank {
  width: 90px;
  text-align: center;
}

/* ── MATCHING ── */
.q-match-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-bottom: 12px;
}
.q-match-table td { padding: 6px 8px; vertical-align: middle; }
.q-match-table .match-opt { width: 52%; }

.q-options-list { list-style: none; margin-bottom: 12px; }
.q-options-list .opt-item {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}
.q-options-list .opt-item:hover { background: var(--primary-light); border-color: var(--primary); }
.q-options-list .opt-item.selected { background: var(--primary); color: #fff; border-color: var(--primary); }
.opt-letter {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}
.opt-item.selected .opt-letter { background: rgba(255,255,255,.3); color: #fff; }

/* ── INDIVIDUAL QUESTION ROW ── */
.q-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.q-row:last-child { border-bottom: none; }
.q-num {
  min-width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--surface2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  color: var(--text-muted);
}
.q-num.current  { background: var(--primary); color: #fff; border-color: var(--primary); }
.q-num.answered { background: var(--success);  color: #fff; border-color: var(--success); }
.q-body { flex: 1; }
.q-text { font-size: 14px; margin-bottom: 6px; line-height: 1.55; }

/* Inline blank (fill-in-the-blank inside sentence) */
.q-blank {
  border: none;
  border-bottom: 2px solid var(--primary);
  background: transparent;
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  min-width: 120px;
  padding: 1px 4px;
  outline: none;
}
.q-blank:focus { border-bottom-color: var(--warn); }

/* Standard text input */
.q-input {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  padding: 7px 10px;
  width: 100%;
  max-width: 380px;
  outline: none;
  transition: border-color var(--transition);
}
.q-input:focus { border-color: var(--primary); }

/* Select (dropdown for matching) */
.q-select {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  padding: 6px 10px;
  min-width: 80px;
  outline: none;
}

/* Flag button */
.q-flag {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 7px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-muted);
  transition: background var(--transition);
  flex-shrink: 0;
}
.q-flag.flagged { background: var(--warn-light); border-color: var(--warn); color: var(--warn); }

/* ─────────────────────────────────────────────────
   SECTION NAVIGATION
───────────────────────────────────────────────── */
.section-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.section-dots { display: flex; gap: 8px; }
.section-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: background var(--transition);
}
.section-dot.active { background: var(--primary); transform: scale(1.3); }
.section-dot.done   { background: var(--success); }

/* ─────────────────────────────────────────────────
   BOTTOM BAR
───────────────────────────────────────────────── */
.bottom-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--bottom-h);
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 18px;
  gap: 14px;
  z-index: 100;
  font-size: 13px;
  color: var(--text-muted);
}
.progress-track {
  flex: 1;
  height: 6px;
  background: var(--surface2);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 3px;
  transition: width .3s ease;
  width: 0%;
}

/* ─────────────────────────────────────────────────
   RESULTS SCREEN
───────────────────────────────────────────────── */
.results-wrapper {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 24px;
}
.results-hero {
  display: flex;
  align-items: center;
  gap: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-md);
}
.band-circle {
  width: 110px; height: 110px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}
.band-label  { font-size: 12px; font-weight: 600; opacity: .85; }
.band-score  { font-size: 38px; font-weight: 800; line-height: 1; }
.results-meta h2   { font-size: 22px; font-weight: 700; }
.results-raw, .results-pct { font-size: 15px; color: var(--text-muted); margin-top: 6px; }

.section-breakdown {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}
.sb-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  text-align: center;
}
.sb-card-title { font-size: 12px; color: var(--text-muted); font-weight: 600; margin-bottom: 4px; }
.sb-card-score { font-size: 22px; font-weight: 800; color: var(--primary); }
.sb-card-total { font-size: 13px; color: var(--text-muted); }

.review-table-wrap { margin-bottom: 28px; overflow-x: auto; }
.review-table-wrap h3 { font-size: 17px; font-weight: 700; margin-bottom: 12px; }
.review-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.review-table th, .review-table td {
  border: 1px solid var(--border);
  padding: 9px 14px;
  text-align: left;
}
.review-table th { background: var(--surface2); font-weight: 600; }
.review-table tr:hover td { background: var(--surface2); }
.result-correct { color: var(--success); font-weight: 700; }
.result-wrong   { color: var(--danger);  font-weight: 700; }
.result-blank   { color: var(--text-muted); }

.results-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ─────────────────────────────────────────────────
   MODALS
───────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 500;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(3px);
}
.modal-overlay.open { display: flex; }
.modal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  max-width: 400px;
  width: 90%;
  box-shadow: var(--shadow-md);
  animation: popIn .18s ease;
}
.modal-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.modal-card p  { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 20px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }
.modal-warn   { border-top: 4px solid var(--warn); }
.modal-danger { border-top: 4px solid var(--danger); }

@keyframes popIn {
  from { transform: scale(.92); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

/* ─────────────────────────────────────────────────
   REVIEW MODE (post-test answers highlighted)
───────────────────────────────────────────────── */
.review-mode .q-input,
.review-mode .q-blank,
.review-mode .q-select { pointer-events: none; }
.review-mode .q-input.correct,
.review-mode .q-blank.correct { border-color: var(--success); background: var(--success-light); }
.review-mode .q-input.wrong,
.review-mode .q-blank.wrong   { border-color: var(--danger);  background: var(--danger-light); }
.answer-key-chip {
  display: inline-block;
  background: var(--success-light);
  color: var(--success);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 8px;
}

/* ─────────────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { position: fixed; top: var(--topbar-h); left: 0; bottom: var(--bottom-h); z-index: 90; }
  .content-area { max-width: 100%; padding: 14px 16px; }
  .topbar-title { display: none; }
  .results-hero { flex-direction: column; align-items: flex-start; gap: 18px; }
  .instr-card { padding: 24px 20px; }
  .q-form-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .test-grid { grid-template-columns: 1fr; }
  .q-input   { max-width: 100%; }
}

/* ─────────────────────────────────────────────────
   SCROLLBAR
───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }