/* =====================================================
   CompTIA A+ 220-1201 Exam Simulator
   styles.css — Complete Stylesheet
   Save to: comptia-simulator/css/styles.css
   ===================================================== */

/* ── RESET & ROOT VARIABLES ── */
:root {
  --bg: #0a0e1a;
  --sf: #111827;
  --sf2: #1a2235;
  --sf3: #222d42;
  --bd: #2a3550;
  --bd2: #3a4560;
  --ac: #4f8ef7;
  --ac2: #7c5cbf;
  --gn: #22c55e;
  --yw: #f59e0b;
  --rd: #ef4444;
  --pu: #a78bfa;
  --cy: #22d3ee;
  --tx: #e2e8f0;
  --tx2: #94a3b8;
  --tx3: #cbd5e1;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --radius: 10px;
  --radius-sm: 6px;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  overflow: hidden;
}

body {
  background: var(--bg);
  color: var(--tx);
  font-family:
    "Segoe UI",
    system-ui,
    -apple-system,
    sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: var(--sf);
}
::-webkit-scrollbar-thumb {
  background: var(--bd2);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--ac);
}

/* ── UTILITY ── */
.hidden {
  display: none !important;
}
.flex {
  display: flex;
}
.flex-col {
  display: flex;
  flex-direction: column;
}
.gap-8 {
  gap: 8px;
}
.gap-12 {
  gap: 12px;
}

/* =====================================================
   SCREENS
   ===================================================== */
.screen {
  display: none;
  width: 100%;
  height: 100vh;
}
.screen.active {
  display: flex;
  flex-direction: column;
}

/* =====================================================
   DASHBOARD  (index.html)
   ===================================================== */

/* Body override for dashboard — allow scroll */
body.dashboard-body {
  overflow-y: auto;
  height: auto;
  min-height: 100vh;
}

/* Header */
.dash-header {
  background: linear-gradient(135deg, var(--sf) 0%, var(--sf2) 100%);
  border-bottom: 1px solid var(--bd);
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.dash-header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--ac), var(--ac2), transparent);
}

.dash-logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.dash-logo-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--ac), var(--ac2));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(79, 142, 247, 0.3);
}

.dash-logo-text h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--tx);
  letter-spacing: -0.3px;
}

.dash-logo-text p {
  font-size: 11px;
  color: var(--tx2);
  margin-top: 1px;
}

/* Header Stats */
.dash-header-stats {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hstat {
  text-align: center;
  background: var(--sf3);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  min-width: 70px;
}

.hstat-val {
  font-size: 20px;
  font-weight: 700;
  color: var(--ac);
  line-height: 1.2;
}

.hstat-lbl {
  font-size: 9px;
  color: var(--tx2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

/* Progress Bar */
.dash-progress {
  padding: 16px 32px 0;
  background: var(--sf);
  border-bottom: 1px solid var(--bd);
  padding-bottom: 16px;
}

.dash-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--tx2);
  margin-bottom: 6px;
}

.progress-track {
  height: 5px;
  background: var(--sf2);
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--bd);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--ac), var(--ac2));
  border-radius: 3px;
  transition: width 0.6s ease;
}

/* Main Content */
.dash-main {
  padding: 24px 32px 48px;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

.section-title {
  font-size: 11px;
  color: var(--tx2);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--bd);
}

/* Exam Grid */
.exam-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

/* Exam Card */
.exam-card {
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: var(--radius);
  overflow: hidden;
  transition:
    transform 0.2s,
    border-color 0.2s,
    box-shadow 0.2s;
  cursor: default;
}

.exam-card:hover {
  border-color: var(--ac);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(79, 142, 247, 0.12);
}

.card-top-bar {
  height: 3px;
  width: 100%;
}

.card-body {
  padding: 16px;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.card-exam-num {
  font-size: 10px;
  color: var(--tx2);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-pbq-type {
  font-size: 9px;
  color: var(--tx2);
  background: var(--sf3);
  border: 1px solid var(--bd);
  border-radius: 10px;
  padding: 2px 8px;
}

.status-badge {
  padding: 3px 10px;
  border-radius: 10px;
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sb-not-started {
  background: var(--sf3);
  color: var(--tx2);
  border: 1px solid var(--bd);
}
.sb-in-progress {
  background: #2d2500;
  color: var(--yw);
  border: 1px solid var(--yw);
}
.sb-completed {
  background: #0d2818;
  color: var(--gn);
  border: 1px solid var(--gn);
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--tx);
  margin-bottom: 3px;
}

.card-subtitle {
  font-size: 11px;
  color: var(--tx2);
  margin-bottom: 10px;
}

/* Domain Pills */
.domain-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 12px;
}

.dpill {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* Score Display */
.card-score {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  padding: 10px;
  background: var(--sf2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--bd);
}

.score-big {
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
}

.score-meta {
  font-size: 10px;
  color: var(--tx2);
  line-height: 1.4;
}

.pass-chip {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 8px;
  font-size: 10px;
  font-weight: 700;
  margin-top: 3px;
}

.pass-chip.pass {
  background: #0d2818;
  color: var(--gn);
  border: 1px solid var(--gn);
}
.pass-chip.fail {
  background: #2d0d0d;
  color: var(--rd);
  border: 1px solid var(--rd);
}

/* Card Stats Row */
.card-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-bottom: 12px;
}

.cstat {
  background: var(--sf2);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  padding: 7px 6px;
  text-align: center;
}

.cstat-val {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
}

.cstat-lbl {
  font-size: 9px;
  color: var(--tx2);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-top: 1px;
}

/* Card Buttons */
.card-actions {
  display: flex;
  gap: 6px;
}

/* =====================================================
   BUTTONS — SHARED
   ===================================================== */
.btn {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--bd);
  background: var(--sf2);
  color: var(--tx);
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  transition: all 0.15s;
  text-align: center;
  white-space: nowrap;
  letter-spacing: 0.2px;
}

.btn:hover {
  border-color: var(--ac);
  color: var(--ac);
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--ac), var(--ac2));
  color: #fff;
  border-color: transparent;
  flex: 1;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: scale(1.02);
  color: #fff;
  border-color: transparent;
}

.btn-danger {
  background: transparent;
  color: var(--rd);
  border-color: var(--rd);
}

.btn-danger:hover {
  background: #2d0d0d;
  color: var(--rd);
  border-color: var(--rd);
}

.btn-ghost {
  background: transparent;
  border-color: var(--bd);
  color: var(--tx2);
}

.btn-ghost:hover {
  border-color: var(--ac);
  color: var(--ac);
}

/* =====================================================
   MODAL
   ===================================================== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: var(--radius);
  padding: 28px;
  max-width: 420px;
  width: 90%;
  box-shadow: var(--shadow);
}

.modal h2 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--tx);
}

.modal p {
  font-size: 13px;
  color: var(--tx2);
  line-height: 1.65;
  margin-bottom: 20px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* =====================================================
   TOAST
   ===================================================== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-size: 13px;
  color: var(--tx);
  z-index: 999;
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.3s;
  max-width: 320px;
  box-shadow: var(--shadow);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.success {
  border-color: var(--gn);
  color: var(--gn);
}
.toast.error {
  border-color: var(--rd);
  color: var(--rd);
}
.toast.info {
  border-color: var(--ac);
  color: var(--ac);
}

/* =====================================================
   EXAM ENGINE  (exam.html)
   ===================================================== */

/* Exam layout: sidebar + main panel */
#exam-layout {
  display: flex;
  flex-direction: row;
  height: 100vh;
  overflow: hidden;
}

/* ── SIDEBAR ── */
#sidebar {
  width: 210px;
  min-width: 210px;
  background: var(--sf);
  border-right: 1px solid var(--bd);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

#sb-header {
  padding: 12px;
  border-bottom: 1px solid var(--bd);
  flex-shrink: 0;
}

#sb-header h3 {
  font-size: 10px;
  color: var(--tx2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.leg-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 9px;
  color: var(--tx2);
}

.leg-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  flex-shrink: 0;
}

.ld-curr {
  background: var(--ac);
}
.ld-ans {
  background: var(--gn);
}
.ld-flag {
  background: var(--yw);
}
.ld-pbq {
  background: var(--pu);
}

#q-grid-wrap {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.q-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 3px;
}

.qg-btn {
  aspect-ratio: 1;
  border-radius: 3px;
  border: 1px solid var(--bd);
  background: var(--sf2);
  color: var(--tx2);
  cursor: pointer;
  font-size: 9px;
  font-weight: 600;
  transition: all 0.12s;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.qg-btn:hover {
  border-color: var(--ac);
}
.qg-btn.curr {
  background: #1a2d4f;
  border-color: var(--ac);
  color: var(--ac);
}
.qg-btn.answered {
  background: #0d2818;
  border-color: var(--gn);
  color: var(--gn);
}
.qg-btn.flagged {
  background: #2d2500;
  border-color: var(--yw);
  color: var(--yw);
}
.qg-btn.is-pbq {
  border-style: dashed;
}
.qg-btn .pbq-dot {
  position: absolute;
  top: 1px;
  right: 2px;
  font-size: 6px;
  color: var(--pu);
  line-height: 1;
}

#sb-stats {
  padding: 10px 12px;
  border-top: 1px solid var(--bd);
  font-size: 10px;
  color: var(--tx2);
  flex-shrink: 0;
}

.sb-stat-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
}

.sb-stat-row span:last-child {
  color: var(--tx3);
  font-weight: 600;
}

/* ── MAIN PANEL ── */
#main-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Exam Header Bar */
#exam-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 18px;
  background: var(--sf);
  border-bottom: 1px solid var(--bd);
  gap: 10px;
  flex-shrink: 0;
}

#exam-title-text {
  font-size: 11px;
  color: var(--tx2);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.header-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.hdr-btn {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--bd);
  background: var(--sf2);
  color: var(--tx2);
  cursor: pointer;
  font-size: 10px;
  font-weight: 600;
  transition: all 0.12s;
  white-space: nowrap;
}

.hdr-btn:hover {
  border-color: var(--ac);
  color: var(--ac);
}

/* Timer */
#timer {
  font-size: 17px;
  font-weight: 700;
  font-family: "Courier New", monospace;
  background: var(--sf2);
  border: 1px solid var(--bd);
  padding: 5px 13px;
  border-radius: var(--radius-sm);
  color: var(--tx);
  flex-shrink: 0;
  min-width: 76px;
  text-align: center;
}

#timer.warning {
  color: var(--yw);
  border-color: var(--yw);
}
#timer.critical {
  color: var(--rd);
  border-color: var(--rd);
  animation: blink 1s infinite;
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}

/* Question Area */
#q-area {
  flex: 1;
  overflow-y: auto;
  padding: 18px 22px;
}

/* Question Header */
#q-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

#q-number-label {
  font-size: 11px;
  color: var(--tx2);
  flex-shrink: 0;
}

#q-badges {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}

/* Badges */
.badge {
  padding: 2px 7px;
  border-radius: 7px;
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.bd-domain {
  background: #1a2d4f;
  color: var(--ac);
  border: 1px solid var(--ac);
}
.bd-extreme {
  background: #2d0d0d;
  color: var(--rd);
  border: 1px solid var(--rd);
}
.bd-pbq {
  background: #2a1d40;
  color: var(--pu);
  border: 1px solid var(--pu);
}
.bd-time {
  background: var(--sf3);
  color: var(--tx2);
  border: 1px solid var(--bd);
}

/* Tool Buttons */
#q-tools {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.tool-btn {
  padding: 4px 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--bd);
  background: var(--sf2);
  color: var(--tx2);
  cursor: pointer;
  font-size: 10px;
  font-weight: 600;
  transition: all 0.12s;
}

.tool-btn:hover,
.tool-btn.active {
  border-color: var(--ac);
  color: var(--ac);
  background: #1a2d4f;
}

/* Simplified Box */
#simplified-box {
  background: #0d1f33;
  border: 1px solid var(--ac);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 12px;
}

.simp-label {
  font-size: 9px;
  color: var(--ac);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 5px;
}

#simplified-text {
  font-size: 13px;
  color: var(--tx3);
  line-height: 1.65;
}

/* Question Text Box */
#q-text {
  background: var(--sf2);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 14px;
  line-height: 1.78;
  color: var(--tx3);
  font-size: 13px;
}

#q-text .kw {
  background: #1a3a1a;
  color: #7ee787;
  padding: 1px 4px;
  border-radius: 3px;
  font-weight: 600;
}

/* MCQ Options */
#options-area {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 16px;
}

.option-btn {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--bd);
  background: var(--sf2);
  cursor: pointer;
  transition: all 0.12s;
  color: var(--tx3);
  line-height: 1.55;
  text-align: left;
  width: 100%;
  font-size: 13px;
}

.option-btn:hover {
  border-color: var(--ac);
  background: #1a2d4f;
}
.option-btn.selected {
  border-color: var(--ac);
  background: #1a2d4f;
  color: var(--tx);
}
.option-btn.correct {
  border-color: var(--gn);
  background: #0d2818;
  color: var(--gn);
}
.option-btn.wrong {
  border-color: var(--rd);
  background: #2d0d0d;
  color: var(--rd);
}
.option-btn.show-correct {
  border-color: var(--gn);
  background: #0d2818;
  color: var(--gn);
}

.opt-letter {
  min-width: 22px;
  height: 22px;
  border-radius: 4px;
  background: var(--sf);
  border: 1px solid var(--bd);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.option-btn.selected .opt-letter {
  background: var(--ac);
  color: #0a0e1a;
  border-color: var(--ac);
}
.option-btn.correct .opt-letter {
  background: var(--gn);
  color: #0a0e1a;
  border-color: var(--gn);
}
.option-btn.wrong .opt-letter {
  background: var(--rd);
  color: #fff;
  border-color: var(--rd);
}

/* ── PBQ DRAG-DROP ── */
#pbq-area {
  margin-bottom: 16px;
}

.pbq-instruction {
  background: #2a1d40;
  border: 1px solid var(--pu);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  margin-bottom: 12px;
  font-size: 11px;
  color: var(--tx2);
  line-height: 1.55;
}

.pbq-instruction strong {
  color: var(--pu);
}

.pbq-section-label {
  font-size: 9px;
  color: var(--tx2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.drag-pool {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px;
  background: var(--sf2);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  min-height: 46px;
  margin-bottom: 12px;
  transition: border-color 0.15s;
}

.drag-pool.over {
  border-color: var(--ac);
}

.drag-item {
  padding: 5px 12px;
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: 5px;
  cursor: grab;
  font-size: 11px;
  color: var(--tx3);
  user-select: none;
  transition: all 0.12s;
  white-space: nowrap;
}

.drag-item:hover {
  border-color: var(--ac);
  color: var(--tx);
}
.drag-item.dragging {
  opacity: 0.35;
  cursor: grabbing;
}
.drag-item.in-zone {
  background: #1a2d4f;
  border-color: var(--ac);
  color: var(--tx);
}

.drop-zones-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.drop-zone-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: var(--sf2);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
}

.dz-label {
  min-width: 155px;
  max-width: 155px;
  font-size: 11px;
  color: var(--tx2);
  line-height: 1.4;
  flex-shrink: 0;
}

.dz-target {
  flex: 1;
  min-height: 34px;
  background: var(--bg);
  border: 2px dashed var(--bd);
  border-radius: 5px;
  padding: 3px 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  transition: border-color 0.12s;
}

.dz-target.over {
  border-color: var(--ac);
  background: #0d1a2e;
}

/* ── PBQ CONFIG SIM ── */
.config-sim-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.config-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--sf2);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  flex-wrap: wrap;
}

.config-label {
  min-width: 170px;
  font-size: 11px;
  color: var(--tx2);
  line-height: 1.4;
  flex-shrink: 0;
}

.config-select,
.config-input {
  flex: 1;
  min-width: 140px;
  padding: 7px 10px;
  background: var(--sf3);
  border: 1px solid var(--bd);
  border-radius: 5px;
  color: var(--tx);
  font-size: 12px;
  font-family: inherit;
  transition: border-color 0.12s;
}

.config-select:focus,
.config-input:focus {
  outline: none;
  border-color: var(--ac);
}

/* ── EXPLANATION BOX ── */
#explanation-box {
  background: #0d2818;
  border: 1px solid var(--gn);
  border-radius: var(--radius-sm);
  padding: 13px;
  margin-bottom: 14px;
}

.exp-label {
  font-size: 9px;
  color: var(--gn);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.exp-text {
  font-size: 12px;
  color: var(--tx3);
  line-height: 1.65;
}

/* ── QUESTION NAV BAR ── */
#q-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 22px;
  background: var(--sf);
  border-top: 1px solid var(--bd);
  flex-shrink: 0;
  gap: 8px;
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 8px;
}

#flag-btn {
  padding: 6px 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--yw);
  background: transparent;
  color: var(--yw);
  cursor: pointer;
  font-size: 10px;
  font-weight: 600;
  transition: all 0.12s;
}

#flag-btn.flagged {
  background: #2d2500;
}
#flag-btn:hover {
  background: #2d2500;
}

#submit-btn {
  padding: 7px 18px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--rd);
  color: #fff;
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  transition: opacity 0.12s;
  letter-spacing: 0.3px;
}

#submit-btn:hover {
  opacity: 0.85;
}

/* =====================================================
   REVIEW SCREEN
   ===================================================== */
#screen-review {
  overflow-y: auto;
  flex-direction: column;
}

.review-header {
  background: var(--sf);
  border-bottom: 1px solid var(--bd);
  padding: 18px 28px;
  flex-shrink: 0;
}

.review-header h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--tx);
}

.review-header p {
  font-size: 11px;
  color: var(--tx2);
  margin-top: 3px;
}

.review-body {
  padding: 24px 28px 48px;
  max-width: 920px;
  width: 100%;
  margin: 0 auto;
}

/* Score Hero */
.score-hero {
  text-align: center;
  padding: 28px;
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.score-hero-num {
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 4px;
}

.score-hero-label {
  font-size: 12px;
  color: var(--tx2);
}

.score-hero-chip {
  display: inline-block;
  padding: 5px 16px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 700;
  margin-top: 10px;
}

.score-hero-chip.pass {
  background: #0d2818;
  color: var(--gn);
  border: 1px solid var(--gn);
}
.score-hero-chip.fail {
  background: #2d0d0d;
  color: var(--rd);
  border: 1px solid var(--rd);
}

/* Review Summary Cards */
.review-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
  margin-bottom: 22px;
}

.rev-card {
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  padding: 13px;
}

.rev-card h3 {
  font-size: 9px;
  color: var(--tx2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.rev-stat {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  margin-bottom: 4px;
}

.rev-stat span:last-child {
  font-weight: 600;
}

/* Domain Bars */
.domain-section {
  margin-bottom: 22px;
}

.domain-section h2,
.insights-section h2,
.q-review-section h2 {
  font-size: 11px;
  color: var(--tx2);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.domain-section h2::after,
.insights-section h2::after,
.q-review-section h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--bd);
}

.domain-bar-row {
  margin-bottom: 8px;
}

.domain-bar-header {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  margin-bottom: 3px;
  color: var(--tx3);
}

.domain-bar-bg {
  height: 7px;
  background: var(--sf2);
  border-radius: 3px;
  overflow: hidden;
}

.domain-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.6s ease;
}

/* Insights */
.insights-section {
  margin-bottom: 22px;
}

.insight-item {
  display: flex;
  gap: 10px;
  margin-bottom: 8px;
  padding: 10px 12px;
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
}

.insight-icon {
  font-size: 16px;
  flex-shrink: 0;
}

.insight-text {
  font-size: 12px;
  color: var(--tx3);
  line-height: 1.55;
}

.insight-text strong {
  color: var(--tx);
}

/* Review Actions */
.review-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 20px 0;
}

.rev-btn {
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--bd);
  background: var(--sf2);
  color: var(--tx);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.15s;
}

.rev-btn:hover {
  border-color: var(--ac);
  color: var(--ac);
}

.rev-btn.primary {
  background: var(--ac);
  color: #0a0e1a;
  border-color: var(--ac);
}

.rev-btn.primary:hover {
  opacity: 0.9;
  color: #0a0e1a;
  border-color: var(--ac);
}

/* Question Review List */
.q-review-section {
  margin-bottom: 30px;
}

.q-rev-item {
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
}

.q-rev-item.correct-q {
  border-color: rgba(34, 197, 94, 0.3);
}
.q-rev-item.wrong-q {
  border-color: rgba(239, 68, 68, 0.3);
}
.q-rev-item.skipped-q {
  border-color: rgba(148, 163, 184, 0.2);
}

.q-rev-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  background: var(--sf2);
  cursor: pointer;
  user-select: none;
  transition: background 0.12s;
}

.q-rev-header:hover {
  background: var(--sf3);
}

.q-rev-num {
  font-size: 10px;
  color: var(--tx2);
  flex-shrink: 0;
  min-width: 28px;
}
.q-rev-status {
  font-size: 10px;
  font-weight: 700;
  flex-shrink: 0;
  min-width: 68px;
}
.q-rev-domain {
  font-size: 9px;
  color: var(--tx2);
  background: var(--sf3);
  border: 1px solid var(--bd);
  border-radius: 4px;
  padding: 1px 6px;
  flex-shrink: 0;
}
.q-rev-preview {
  flex: 1;
  font-size: 11px;
  color: var(--tx2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.q-rev-toggle {
  font-size: 10px;
  color: var(--tx2);
  flex-shrink: 0;
}

.q-rev-body {
  display: none;
  padding: 14px;
  border-top: 1px solid var(--bd);
}

.q-rev-body.open {
  display: block;
}

.q-rev-question-text {
  font-size: 13px;
  color: var(--tx3);
  line-height: 1.7;
  margin-bottom: 12px;
}

.rev-option {
  padding: 7px 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--bd);
  margin-bottom: 5px;
  font-size: 12px;
  color: var(--tx2);
}

.rev-option.your-correct {
  border-color: var(--gn);
  background: #0d2818;
  color: var(--gn);
}
.rev-option.your-wrong {
  border-color: var(--rd);
  background: #2d0d0d;
  color: var(--rd);
}
.rev-option.show-correct {
  border-color: var(--gn);
  background: #0d2818;
  color: var(--gn);
}

.rev-explanation {
  background: #0d1f33;
  border: 1px solid var(--ac);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-top: 10px;
}

.rev-exp-label {
  font-size: 9px;
  color: var(--ac);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 5px;
}

.rev-exp-text {
  font-size: 12px;
  color: var(--tx3);
  line-height: 1.65;
}

/* PBQ Review */
.pbq-review-result {
  padding: 10px;
  background: var(--sf2);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--tx3);
}

/* =====================================================
   HOME SCREEN  (exam.html — exam-specific landing)
   ===================================================== */
#screen-home {
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(
      ellipse at 30% 30%,
      rgba(79, 142, 247, 0.07),
      transparent 55%
    ),
    radial-gradient(
      ellipse at 70% 70%,
      rgba(124, 92, 191, 0.06),
      transparent 55%
    );
}

.home-card {
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: var(--radius);
  padding: 36px;
  max-width: 580px;
  width: 92%;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.home-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--ac), var(--ac2));
}

.home-card-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 6px;
}

.home-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--ac), var(--ac2));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  flex-shrink: 0;
}

.home-title h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--tx);
}

.home-title p {
  font-size: 11px;
  color: var(--tx2);
  margin-top: 2px;
}

.exam-difficulty-badge {
  display: inline-block;
  padding: 3px 11px;
  border-radius: 8px;
  font-size: 10px;
  font-weight: 700;
  background: #2d0d0d;
  color: var(--rd);
  border: 1px solid var(--rd);
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 18px;
}

.info-box {
  background: var(--sf2);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  padding: 10px 6px;
  text-align: center;
}

.info-box-val {
  font-size: 20px;
  font-weight: 700;
  color: var(--ac);
}
.info-box-lbl {
  font-size: 9px;
  color: var(--tx2);
  text-transform: uppercase;
  margin-top: 2px;
}

.history-box {
  background: var(--sf2);
  border: 1px solid var(--bd);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 18px;
}

.history-box h3 {
  font-size: 9px;
  color: var(--tx2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.hist-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  margin-bottom: 4px;
  color: var(--tx3);
}

.hist-row span:last-child {
  font-weight: 600;
}

.btn-start-exam {
  width: 100%;
  padding: 13px;
  border-radius: var(--radius-sm);
  border: none;
  background: linear-gradient(135deg, var(--ac), var(--ac2));
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition:
    opacity 0.15s,
    transform 0.15s;
  letter-spacing: 0.3px;
  margin-bottom: 8px;
}

.btn-start-exam:hover {
  opacity: 0.9;
  transform: scale(1.01);
}

.btn-review-last {
  width: 100%;
  padding: 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--bd);
  background: var(--sf2);
  color: var(--tx2);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-review-last:hover {
  border-color: var(--ac);
  color: var(--ac);
}

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 768px) {
  .dash-main {
    padding: 16px;
  }
  .dash-header {
    padding: 14px 16px;
  }
  .dash-progress {
    padding: 12px 16px;
  }
  .exam-grid {
    grid-template-columns: 1fr;
  }

  #sidebar {
    width: 160px;
    min-width: 160px;
  }
  #exam-title-text {
    display: none;
  }
  .dz-label {
    min-width: 100px;
    max-width: 100px;
  }
  .config-label {
    min-width: 120px;
  }

  .review-body {
    padding: 16px;
  }
  .home-card {
    padding: 22px;
  }
  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  #sidebar {
    display: none;
  }
  .q-rev-domain {
    display: none;
  }
}