/**
 * Mind Bridge Institute, Patna
 * Online Mock Test & Examination System
 * Stylesheet: tests.css
 * Features: Test Catalog, Instructions, Full-Featured Exam Room, Question Palette, Anti-Cheat Toast, Result & Solution Review, Official Marksheet (Printable)
 */

/* ============================================================
   ROOT VARIABLES & LAYOUT UTILITIES
============================================================ */
:root {
  --test-green: #2ECC71;
  --test-green-glow: rgba(46, 204, 113, 0.25);
  --test-red: #E74C3C;
  --test-red-glow: rgba(231, 76, 60, 0.25);
  --test-purple: #9B59B6;
  --test-purple-glow: rgba(155, 89, 182, 0.25);
  --test-amber: #F39C12;
  --test-amber-glow: rgba(243, 156, 18, 0.25);
  --test-palette-gray: #2A2F3E;
}

.tests-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px 80px;
}

/* Tab filter bar */
.test-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 24px;
}

.test-filter-btn {
  background: var(--obsidian-surface);
  border: 1px solid var(--obsidian-line);
  color: var(--text-muted);
  padding: 8px 18px;
  border-radius: var(--r-pill);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.test-filter-btn:hover {
  border-color: var(--gold-primary);
  color: var(--text-primary);
}

.test-filter-btn.active {
  background: var(--gold-primary);
  color: var(--obsidian-darkest);
  border-color: var(--gold-primary);
  font-weight: 800;
  box-shadow: 0 4px 14px var(--gold-glow);
}

/* ============================================================
   1. STUDENT TEST CATALOG CARDS
============================================================ */
.test-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.student-test-card {
  background: var(--obsidian-card);
  border: 1px solid var(--obsidian-line);
  border-radius: var(--r);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.student-test-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold-primary), var(--gold-champagne));
  opacity: 0.4;
  transition: opacity 0.25s ease;
}

.student-test-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 175, 55, 0.45);
  box-shadow: var(--shadow-card-hover);
}

.student-test-card:hover::before {
  opacity: 1;
}

.test-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.test-subject-pill {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  background: rgba(212, 175, 55, 0.12);
  color: var(--gold-primary);
  border: 1px solid rgba(212, 175, 55, 0.25);
}

.test-status-pill {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.test-status-pill.not-attempted {
  background: rgba(52, 152, 219, 0.12);
  color: var(--badge-blue);
  border: 1px solid rgba(52, 152, 219, 0.25);
}

.test-status-pill.attempted {
  background: rgba(46, 204, 113, 0.14);
  color: var(--free-green);
  border: 1px solid rgba(46, 204, 113, 0.3);
}

.test-status-pill.closed {
  background: rgba(231, 76, 60, 0.12);
  color: var(--test-red);
  border: 1px solid rgba(231, 76, 60, 0.25);
}

.test-card-title {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.35;
  margin: 0;
}

.test-card-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.test-meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  background: var(--obsidian-surface);
  border: 1px solid var(--obsidian-line-sub);
  border-radius: var(--r-sm);
  padding: 10px 12px;
  text-align: center;
}

.test-meta-item .label {
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: block;
  margin-bottom: 2px;
}

.test-meta-item .val {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.test-card-actions {
  display: flex;
  gap: 10px;
  margin-top: auto;
  padding-top: 6px;
}

.btn-test-action {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--r-sm);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  border: none;
}

.btn-test-action.btn-start {
  background: var(--grad-gold-btn);
  color: var(--obsidian-darkest);
  box-shadow: 0 4px 14px var(--gold-glow);
}

.btn-test-action.btn-start:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
}

.btn-test-action.btn-view-res {
  background: rgba(46, 204, 113, 0.15);
  border: 1px solid rgba(46, 204, 113, 0.35);
  color: var(--free-green);
}

.btn-test-action.btn-view-res:hover {
  background: rgba(46, 204, 113, 0.25);
  border-color: var(--free-green);
}

/* ============================================================
   2. INSTRUCTIONS VIEW
============================================================ */
.instructions-container {
  max-width: 820px;
  margin: 20px auto;
  background: var(--obsidian-card);
  border: 1px solid var(--obsidian-line);
  border-radius: var(--r-lg);
  padding: 32px 36px;
  box-shadow: var(--shadow-card);
}

.instructions-header {
  border-bottom: 1px solid var(--obsidian-line-sub);
  padding-bottom: 20px;
  margin-bottom: 24px;
}

.instructions-hero-title {
  font-size: 1.55rem;
  font-weight: 900;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.instructions-meta-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.meta-pill {
  font-size: 0.78rem;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: var(--obsidian-surface);
  border: 1px solid var(--obsidian-line-sub);
  color: var(--text-secondary);
}

.meta-pill strong {
  color: var(--gold-champagne);
}

.rules-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 24px 0;
}

.rule-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 16px;
  background: var(--obsidian-surface);
  border: 1px solid var(--obsidian-line-sub);
  border-radius: var(--r-sm);
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.rule-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: -2px;
}

.instructions-declaration {
  margin: 28px 0 24px;
  padding: 16px;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.instructions-declaration input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--gold-primary);
  cursor: pointer;
}

.instructions-declaration span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-heading);
}

.instructions-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

/* ============================================================
   3. EXAMINATION ENGINE ROOM (ACTIVE TEST)
============================================================ */
.exam-room {
  position: fixed;
  inset: 0;
  background: var(--obsidian-darkest);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

/* Sticky Exam Top Bar */
.exam-topbar {
  height: 64px;
  background: var(--obsidian-surface);
  border-bottom: 1px solid var(--obsidian-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  flex-shrink: 0;
}

.exam-topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.exam-brand-crest img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--gold-primary);
}

.exam-test-title-wrap {
  display: flex;
  flex-direction: column;
}

.exam-test-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: #FFF;
  max-width: 340px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.exam-test-subject {
  font-size: 0.72rem;
  color: var(--gold-champagne);
  font-weight: 600;
}

/* Prominent Countdown Timer */
.exam-timer-box {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(46, 204, 113, 0.12);
  border: 1.5px solid var(--free-green);
  border-radius: var(--r-pill);
  color: #FFF;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
}

.exam-timer-box.timer-warning {
  background: rgba(243, 156, 18, 0.15);
  border-color: var(--test-amber);
  color: var(--gold-highlight);
}

.exam-timer-box.timer-critical {
  background: rgba(231, 76, 60, 0.2);
  border-color: var(--test-red);
  color: #FF7B7B;
  animation: timerPulse 1s infinite alternate;
}

@keyframes timerPulse {
  0% { transform: scale(1); box-shadow: 0 0 5px rgba(231, 76, 60, 0.3); }
  100% { transform: scale(1.04); box-shadow: 0 0 16px rgba(231, 76, 60, 0.6); }
}

.exam-topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.exam-fs-btn {
  background: transparent;
  border: 1px solid var(--obsidian-line-sub);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.exam-fs-btn:hover {
  border-color: var(--gold-primary);
  color: #FFF;
}

.btn-submit-exam {
  background: var(--grad-gold-btn);
  color: var(--obsidian-darkest);
  border: none;
  padding: 8px 18px;
  border-radius: var(--r-sm);
  font-size: 0.85rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 4px 12px var(--gold-glow);
  transition: all 0.2s ease;
}

.btn-submit-exam:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(212, 175, 55, 0.4);
}

/* Main Split View: Question on Left, Palette on Right */
.exam-body-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  height: calc(100vh - 64px);
  overflow: hidden;
}

/* Left Area: Question & Options */
.exam-question-area {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 24px 36px 90px;
  background: var(--obsidian-bg);
  position: relative;
}

.question-status-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--obsidian-line-sub);
}

.question-badge {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--gold-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.marking-badge {
  font-size: 0.76rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-secondary);
}

.marking-badge .pos {
  color: var(--free-green);
}

.marking-badge .neg {
  color: var(--test-red);
}

.question-text-box {
  background: var(--obsidian-card);
  border: 1px solid var(--obsidian-line);
  border-radius: var(--r);
  padding: 22px 26px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #FFF;
  line-height: 1.65;
  margin-bottom: 24px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

/* 4 MCQ Option Cards */
.mcq-options-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 30px;
}

.mcq-opt-card {
  background: var(--obsidian-surface);
  border: 1.5px solid var(--obsidian-line-sub);
  border-radius: var(--r-sm);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.mcq-opt-card:hover {
  border-color: rgba(212, 175, 55, 0.4);
  background: rgba(255, 255, 255, 0.03);
}

.mcq-opt-card.selected {
  border-color: var(--gold-primary);
  background: rgba(212, 175, 55, 0.09);
  box-shadow: 0 0 16px rgba(212, 175, 55, 0.18);
}

.opt-letter-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--obsidian-card);
  border: 1.5px solid var(--obsidian-line-sub);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.mcq-opt-card.selected .opt-letter-circle {
  background: var(--gold-primary);
  border-color: var(--gold-primary);
  color: var(--obsidian-darkest);
  font-weight: 900;
}

.opt-content-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
  flex: 1;
}

.mcq-opt-card.selected .opt-content-text {
  color: #FFF;
  font-weight: 600;
}

/* Exam Sticky Bottom Action Bar */
.exam-bottom-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 68px;
  background: var(--obsidian-surface);
  border-top: 1px solid var(--obsidian-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 36px;
  z-index: 10;
}

.exam-nav-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-exam-nav {
  padding: 9px 18px;
  border-radius: var(--r-sm);
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-exam-nav.btn-clear {
  background: transparent;
  border: 1px solid var(--obsidian-line-sub);
  color: var(--text-muted);
}

.btn-exam-nav.btn-clear:hover {
  border-color: var(--test-red);
  color: var(--test-red);
}

.btn-exam-nav.btn-review {
  background: rgba(155, 89, 182, 0.15);
  border: 1px solid rgba(155, 89, 182, 0.4);
  color: #D29BF0;
}

.btn-exam-nav.btn-review:hover {
  background: rgba(155, 89, 182, 0.28);
  border-color: #D29BF0;
}

.btn-exam-nav.btn-save-next {
  background: var(--grad-gold-btn);
  border: none;
  color: var(--obsidian-darkest);
  font-weight: 800;
  box-shadow: 0 4px 12px var(--gold-glow);
}

.btn-exam-nav.btn-save-next:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(212, 175, 55, 0.4);
}

/* Right Area: Question Palette Sidebar */
.exam-palette-sidebar {
  background: var(--obsidian-surface);
  border-left: 1px solid var(--obsidian-line);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow-y: auto;
  padding: 20px;
}

.palette-header-title {
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--text-heading);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

/* Palette Legend */
.palette-legend-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--obsidian-line-sub);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

.legend-dot.answered { background: var(--test-green); }
.legend-dot.unanswered { background: var(--test-palette-gray); border: 1px solid rgba(255, 255, 255, 0.2); }
.legend-dot.marked { background: var(--test-purple); }
.legend-dot.marked-answered { background: var(--test-purple); box-shadow: inset 0 0 0 3px var(--test-green); }
.legend-dot.current { background: var(--gold-primary); }

/* Palette Button Grid */
.palette-buttons-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-bottom: 20px;
}

.palette-btn {
  aspect-ratio: 1;
  border-radius: 6px;
  border: 1px solid transparent;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  position: relative;
}

.palette-btn.unanswered {
  background: var(--test-palette-gray);
  color: var(--text-secondary);
  border-color: rgba(255, 255, 255, 0.1);
}

.palette-btn.answered {
  background: var(--test-green);
  color: #FFF;
  border-color: var(--test-green);
}

.palette-btn.marked {
  background: var(--test-purple);
  color: #FFF;
  border-color: var(--test-purple);
}

.palette-btn.marked-answered {
  background: var(--test-purple);
  color: #FFF;
  border: 2px solid var(--test-green);
}

.palette-btn.current {
  box-shadow: 0 0 0 2px var(--gold-primary), 0 0 10px var(--gold-glow);
  transform: scale(1.05);
  font-weight: 900;
}

/* Palette Summary Stats */
.palette-stats-card {
  margin-top: auto;
  background: var(--obsidian-card);
  border: 1px solid var(--obsidian-line-sub);
  border-radius: var(--r-sm);
  padding: 14px;
}

.palette-stat-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  padding: 4px 0;
  color: var(--text-secondary);
}

.palette-stat-row strong {
  color: #FFF;
}

/* ============================================================
   4. ANTI-CHEAT WARNING TOAST
============================================================ */
.anti-cheat-toast {
  position: fixed;
  top: 76px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: rgba(231, 76, 60, 0.95);
  backdrop-filter: blur(10px);
  border: 1.5px solid #FF8888;
  color: #FFF;
  padding: 12px 24px;
  border-radius: var(--r-pill);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8), 0 0 20px rgba(231, 76, 60, 0.5);
  font-size: 0.88rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 100000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.anti-cheat-toast.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* ============================================================
   5. CONFIRMATION SUBMIT MODAL
============================================================ */
.exam-submit-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 20px;
}

.exam-submit-modal.open {
  opacity: 1;
  pointer-events: auto;
}

.exam-submit-card {
  background: var(--obsidian-card);
  border: 1.5px solid var(--obsidian-line);
  border-radius: var(--r-lg);
  width: 100%;
  max-width: 480px;
  padding: 28px;
  box-shadow: var(--shadow-card);
  text-align: center;
}

.exam-submit-card h3 {
  font-size: 1.3rem;
  font-weight: 900;
  color: #FFF;
  margin-bottom: 6px;
}

.exam-submit-stats-table {
  width: 100%;
  margin: 20px 0;
  border-collapse: collapse;
}

.exam-submit-stats-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--obsidian-line-sub);
  font-size: 0.86rem;
}

.exam-submit-stats-table td:first-child {
  text-align: left;
  color: var(--text-muted);
}

.exam-submit-stats-table td:last-child {
  text-align: right;
  font-weight: 800;
  color: #FFF;
}

.submit-modal-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

/* ============================================================
   6. RESULT & SOLUTION REVIEW VIEW
============================================================ */
.result-container {
  max-width: 900px;
  margin: 20px auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.result-hero-card {
  background: var(--obsidian-card);
  border: 1.5px solid var(--obsidian-line);
  border-radius: var(--r-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.result-hero-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--gold-primary), var(--gold-champagne));
}

.result-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 18px;
  border-radius: var(--r-pill);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.result-badge.passed {
  background: rgba(46, 204, 113, 0.15);
  border: 1.5px solid var(--free-green);
  color: var(--free-green);
}

.result-badge.failed {
  background: rgba(231, 76, 60, 0.15);
  border: 1.5px solid var(--test-red);
  color: var(--test-red);
}

.result-score-number {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  background: var(--grad-gold-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
}

.result-score-sub {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.result-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.result-stat-box {
  background: var(--obsidian-surface);
  border: 1px solid var(--obsidian-line-sub);
  border-radius: var(--r-sm);
  padding: 14px 10px;
  text-align: center;
}

.result-stat-box .num {
  font-size: 1.35rem;
  font-weight: 800;
  display: block;
}

.result-stat-box .lbl {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.result-stat-box.green .num { color: var(--free-green); }
.result-stat-box.red .num { color: var(--test-red); }
.result-stat-box.purple .num { color: var(--test-purple); }
.result-stat-box.gold .num { color: var(--gold-champagne); }

.result-certificate-box {
  background: rgba(212, 175, 55, 0.06);
  border: 1px dashed rgba(212, 175, 55, 0.35);
  border-radius: var(--r-sm);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  font-size: 0.82rem;
}

.result-id-stamp {
  font-family: monospace;
  font-weight: 800;
  color: var(--gold-primary);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
}

.result-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* Solutions Review List */
.solutions-section-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-heading);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.solution-question-card {
  background: var(--obsidian-card);
  border: 1px solid var(--obsidian-line-sub);
  border-radius: var(--r);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.solution-question-card.correct {
  border-left: 4px solid var(--free-green);
}

.solution-question-card.incorrect {
  border-left: 4px solid var(--test-red);
}

.solution-question-card.skipped {
  border-left: 4px solid var(--text-muted);
}

.solution-opt-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--r-sm);
  background: var(--obsidian-surface);
  border: 1px solid transparent;
  font-size: 0.88rem;
}

.solution-opt-row.is-correct-answer {
  background: rgba(46, 204, 113, 0.15);
  border-color: rgba(46, 204, 113, 0.4);
  color: #FFF;
  font-weight: 600;
}

.solution-opt-row.is-user-wrong {
  background: rgba(231, 76, 60, 0.15);
  border-color: rgba(231, 76, 60, 0.4);
  color: #FFAAAA;
  text-decoration: line-through;
}

/* ============================================================
   7. PRINTABLE OFFICIAL MARKSHEET (A4 STYLED)
============================================================ */
#printableMarksheet {
  display: none;
}

@media print {
  body * {
    visibility: hidden;
  }
  
  #printableMarksheet, #printableMarksheet * {
    visibility: visible;
  }
  
  #printableMarksheet {
    display: block !important;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    color: #000;
    background: #FFF;
    padding: 20mm;
    font-family: 'Inter', sans-serif;
  }
  
  .exam-room, .dash-topbar, .bottom-nav {
    display: none !important;
  }
}

.marksheet-print-canvas {
  background: #FFF;
  color: #111;
  padding: 24px;
  border: 2px solid #D4AF37;
  border-radius: 8px;
  max-width: 800px;
  margin: 0 auto;
}

.marksheet-header {
  text-align: center;
  border-bottom: 2px solid #D4AF37;
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.marksheet-title {
  font-size: 22px;
  font-weight: 900;
  color: #111;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.marksheet-sub {
  font-size: 11px;
  color: #555;
  margin-top: 4px;
}

.marksheet-student-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
  font-size: 13px;
}

.marksheet-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}

.marksheet-table th, .marksheet-table td {
  border: 1px solid #CCC;
  padding: 8px 12px;
  text-align: left;
  font-size: 12px;
}

.marksheet-table th {
  background: #F8F9FA;
  font-weight: 800;
}

.marksheet-signatures {
  display: flex;
  justify-content: space-between;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #EEE;
  font-size: 12px;
}

/* ============================================================
   8. RESPONSIVE DESIGN FOR EXAM & DASHBOARD
============================================================ */
@media (max-width: 992px) {
  .exam-body-grid {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
  }
  
  .exam-palette-sidebar {
    display: none; /* Collapsible on mobile */
    position: fixed;
    right: 0;
    top: 64px;
    bottom: 68px;
    width: 280px;
    z-index: 50;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.8);
  }
  
  .exam-palette-sidebar.mobile-open {
    display: flex;
  }
  
  .exam-question-area {
    padding: 18px 20px 80px;
  }
  
  .result-stats-row {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .tests-wrapper {
    padding: 12px 14px 80px;
  }
  
  .instructions-container {
    padding: 20px;
  }
  
  .exam-topbar {
    padding: 0 14px;
  }
  
  .exam-test-title {
    max-width: 140px;
  }
  
  .exam-bottom-bar {
    padding: 0 14px;
  }
  
  .btn-exam-nav {
    padding: 8px 12px;
    font-size: 0.78rem;
  }
}