/* ============================================================================
   BCA STORE — HIGH-PERFORMANCE PROFESSIONAL EXAM ARENA STYLESHEET
   Supports: Dark Theme, Competitive Exam Palettes, 2-Column Split, SVG Charts,
             Responsive Palette Drawer, & Premium Animations.
============================================================================ */

:root {
  --exam-bg: #0b0f19;
  --exam-card: #151d30;
  --exam-card-hover: #1e2942;
  --exam-border: rgba(255, 255, 255, 0.08);
  --exam-border-glow: rgba(99, 102, 241, 0.2);
  --exam-text: #f1f5f9;
  --exam-muted: #94a3b8;
  
  /* Status Colors */
  --exam-primary: #6366f1;
  --exam-primary-hover: #4f46e5;
  --exam-accent: #38bdf8;
  --exam-green: #10b981;
  --exam-green-bg: rgba(16, 185, 129, 0.1);
  --exam-red: #ef4444;
  --exam-red-bg: rgba(239, 68, 68, 0.1);
  --exam-yellow: #f59e0b;
  --exam-yellow-bg: rgba(245, 158, 11, 0.1);
  --exam-violet: #8b5cf6;
  --exam-violet-bg: rgba(139, 92, 246, 0.1);
  --exam-grey: #64748b;
  --exam-grey-bg: rgba(100, 116, 139, 0.1);
  
  --exam-radius: 16px;
  --exam-radius-lg: 24px;
  --exam-radius-sm: 8px;
  --exam-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  --exam-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', sans-serif;
  background-color: var(--exam-bg);
  color: var(--exam-text);
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--exam-bg);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes pulseGlow {
  0%, 100% { border-color: var(--exam-border); }
  50% { border-color: var(--exam-primary); }
}
@keyframes scaleUp {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.animate-in {
  animation: fadeInUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-scale {
  animation: scaleUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* REGISTRATION & INSTRUCTION CARD OVERLAY */
.test-registration-overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at top, #0f172a, #020617);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow-y: auto;
}

.reg-card {
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  background: var(--exam-card);
  border: 1px solid var(--exam-border);
  border-radius: var(--exam-radius-lg);
  padding: 36px;
  box-shadow: var(--exam-shadow);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.instructions-scroll-wrapper {
  flex: 1;
  min-height: 0;
  max-height: 350px;
  overflow-y: auto;
  scroll-behavior: smooth;
  margin-bottom: 24px;
  padding-right: 8px;
}

.instructions-scroll-wrapper::-webkit-scrollbar {
  width: 6px;
}
.instructions-scroll-wrapper::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.02);
  border-radius: 99px;
}
.instructions-scroll-wrapper::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 99px;
}
.instructions-scroll-wrapper::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

@media (max-height: 700px), (max-width: 640px) {
  .instructions-scroll-wrapper {
    max-height: 220px;
    margin-bottom: 16px;
  }
  .reg-card {
    padding: 20px;
    max-height: 95vh;
  }
  .reg-header {
    margin-bottom: 12px;
  }
}

.reg-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--exam-primary), var(--exam-accent));
}

.reg-header {
  text-align: center;
  margin-bottom: 28px;
}

.reg-header h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  margin: 0 0 8px 0;
  background: linear-gradient(135deg, #fff 50%, var(--exam-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.reg-header p {
  color: var(--exam-muted);
  font-size: 0.95rem;
  margin: 0;
}

/* Candidate Profile Info Block */
.candidate-verify-strip {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(99, 102, 241, 0.05);
  border: 1px solid var(--exam-border-glow);
  padding: 16px 20px;
  border-radius: var(--exam-radius);
  margin-bottom: 24px;
}

.candidate-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--exam-primary), var(--exam-accent));
  color: #fff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.candidate-details {
  flex: 1;
}

.candidate-details h4 {
  margin: 0 0 2px 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--exam-text);
}

.candidate-details p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--exam-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Info Dashboard Layout */
.test-info-dash {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.info-dash-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--exam-border);
  border-radius: var(--exam-radius);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.info-dash-icon {
  font-size: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: var(--exam-radius-sm);
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.info-dash-meta {
  display: flex;
  flex-direction: column;
}

.info-dash-meta span:first-child {
  font-size: 0.75rem;
  color: var(--exam-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.info-dash-meta span:last-child {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
}

/* Instructions lists */
.rules-block {
  background: rgba(245, 158, 11, 0.03);
  border: 1px solid rgba(245, 158, 11, 0.15);
  border-radius: var(--exam-radius);
  padding: 20px;
  margin-bottom: 28px;
}

.rules-block h5 {
  margin: 0 0 10px 0;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--exam-yellow);
  display: flex;
  align-items: center;
  gap: 8px;
}

.rules-block ul {
  margin: 0;
  padding-left: 20px;
  font-size: 0.85rem;
  color: var(--exam-muted);
  line-height: 1.6;
}

.rules-block li {
  margin-bottom: 6px;
}

/* Fullscreen Toggle Box */
.fullscreen-opt-box {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  cursor: pointer;
  user-select: none;
}

.fullscreen-opt-box input {
  width: 18px;
  height: 18px;
  accent-color: var(--exam-primary);
  cursor: pointer;
}

.fullscreen-opt-box span {
  font-size: 0.9rem;
  color: var(--exam-text);
  font-weight: 500;
}

/* Button UI */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--exam-radius-sm);
  font-weight: 700;
  cursor: pointer;
  border: none;
  font-size: 0.95rem;
  transition: var(--exam-transition);
}

.btn-prim {
  background: linear-gradient(135deg, var(--exam-primary) 0%, var(--exam-primary-hover) 100%);
  color: white;
  box-shadow: 0 4px 18px rgba(99, 102, 241, 0.35);
}

.btn-prim:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.5);
}

.btn-sec {
  background: rgba(255, 255, 255, 0.05);
  color: var(--exam-text);
  border: 1px solid var(--exam-border);
}

.btn-sec:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-warning {
  background: var(--exam-red);
  color: white;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
}

.btn-warning:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(239, 68, 68, 0.45);
}

.btn-violet {
  background: var(--exam-violet);
  color: white;
  box-shadow: 0 4px 14px rgba(139, 92, 246, 0.3);
}

.btn-violet:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(139, 92, 246, 0.45);
}

.btn-outline-subtle {
  background: transparent;
  color: var(--exam-muted);
  border: 1px dashed var(--exam-border);
  padding: 10px 20px;
}
.btn-outline-subtle:hover {
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}

/* ============================================================================
   EXAMINATION WORKSPACE (TWO COLUMN LAYOUT)
   ============================================================================ */

/* Exam Header */
.exam-header-bar {
  height: 72px;
  background: rgba(21, 29, 48, 0.95);
  border-bottom: 1px solid var(--exam-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 1002;
  backdrop-filter: blur(12px);
}

.eh-left {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.eh-brand {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.15rem;
  background: linear-gradient(135deg, #fff 0%, var(--exam-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

.eh-separator {
  width: 1px;
  height: 24px;
  background: var(--exam-border);
}

.eh-title-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.eh-title-info h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.eh-title-info span {
  font-size: 0.75rem;
  color: var(--exam-muted);
}

.eh-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.eh-timer-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--exam-green-bg);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--exam-green);
  padding: 8px 16px;
  border-radius: var(--exam-radius-sm);
  font-weight: 800;
  font-size: 1.05rem;
  font-variant-numeric: tabular-nums;
  transition: var(--exam-transition);
}

.eh-timer-box.warning {
  background: var(--exam-yellow-bg);
  border-color: rgba(245, 158, 11, 0.2);
  color: var(--exam-yellow);
}

.eh-timer-box.urgent {
  background: var(--exam-red-bg);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--exam-red);
  animation: pulseGlow 1s infinite;
}

/* Main Grid split */
.exam-layout-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  min-height: calc(100vh - 72px);
  position: relative;
}

/* Left Column: Questions */
.exam-question-column {
  padding: 40px;
  box-sizing: border-box;
  overflow-y: auto;
  position: relative;
  display: flex;
  flex-direction: column;
}

.exam-main-panel {
  max-width: 840px;
  width: 100%;
  margin: 0 auto;
  flex: 1;
}

/* Left side question layout details */
.q-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--exam-border);
  padding-bottom: 16px;
  margin-bottom: 24px;
}

.q-number-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
}

.q-marks-tag {
  background: var(--exam-grey-bg);
  border: 1px solid rgba(255,255,255,0.05);
  color: var(--exam-accent);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--exam-radius-sm);
}

.q-text-body {
  font-size: 1.15rem;
  line-height: 1.6;
  margin-bottom: 28px;
  color: #f1f5f9;
}

/* Subjective Textarea */
.test-la-input {
  width: 100%;
  min-height: 240px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--exam-border);
  border-radius: var(--exam-radius);
  color: #fff;
  padding: 18px;
  font-size: 1rem;
  line-height: 1.5;
  box-sizing: border-box;
  resize: vertical;
  font-family: inherit;
  transition: var(--exam-transition);
}
.test-la-input:focus {
  outline: none;
  border-color: var(--exam-primary);
  background: rgba(255, 255, 255, 0.04);
}

/* Styled radio options list */
.exam-options-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 40px;
}

.exam-option-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--exam-border);
  border-radius: var(--exam-radius);
  cursor: pointer;
  transition: var(--exam-transition);
}

.exam-option-item:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.15);
}

.exam-option-item.selected {
  background: rgba(99, 102, 241, 0.08);
  border-color: var(--exam-primary);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.1);
}

.option-badge {
  width: 32px;
  height: 32px;
  border-radius: var(--exam-radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--exam-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--exam-muted);
  flex-shrink: 0;
  transition: var(--exam-transition);
}

.exam-option-item.selected .option-badge {
  background: var(--exam-primary);
  border-color: var(--exam-primary);
  color: white;
}

.option-text {
  font-size: 1rem;
  line-height: 1.4;
  color: var(--exam-text);
}

/* Bottom Actions bar */
.exam-nav-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--exam-border);
  padding-top: 24px;
  margin-top: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-nav-left {
  display: flex;
  gap: 12px;
}

.footer-nav-right {
  display: flex;
  gap: 12px;
}

/* Right Column: Sidebar Palette */
.exam-sidebar-column {
  background: #101625;
  border-left: 1px solid var(--exam-border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 72px;
  height: calc(100vh - 72px);
  overflow-y: auto;
  box-sizing: border-box;
}

/* User summary profile */
.sidebar-user-card {
  padding: 24px;
  border-bottom: 1px solid var(--exam-border);
  display: flex;
  align-items: center;
  gap: 14px;
}

.sidebar-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--exam-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: white;
}

.sidebar-user-info {
  display: flex;
  flex-direction: column;
}

.sidebar-user-info span:first-child {
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
}
.sidebar-user-info span:last-child {
  font-size: 0.75rem;
  color: var(--exam-muted);
}

/* Palette stats grid legends */
.palette-legends-container {
  padding: 20px 24px;
  border-bottom: 1px solid var(--exam-border);
}

.palette-legends-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

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

.legend-badge {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 800;
  color: white;
}

.legend-item span:last-child {
  font-size: 0.75rem;
  color: var(--exam-muted);
  font-weight: 500;
}

/* Legend Colors */
.bg-answered { background-color: var(--exam-green); }
.bg-not-answered { background-color: var(--exam-red); }
.bg-marked { background-color: var(--exam-violet); }
.bg-not-visited { background-color: var(--exam-grey); border: 1px solid var(--exam-border); }

/* Palette buttons grid */
.palette-numbers-box {
  padding: 24px;
  flex: 1;
}

.palette-numbers-box h4 {
  margin: 0 0 16px 0;
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--exam-muted);
  letter-spacing: 0.5px;
}

.palette-buttons-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.palette-btn {
  aspect-ratio: 1;
  border-radius: 8px;
  border: none;
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--exam-transition);
  color: white;
  background-color: var(--exam-grey);
}

.palette-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.2);
}

.palette-btn.not_visited { background-color: var(--exam-grey); color: var(--exam-text); border: 1px solid var(--exam-border); }
.palette-btn.visited { background-color: var(--exam-red); color: white; }
.palette-btn.answered { background-color: var(--exam-green); color: white; }
.palette-btn.marked { background-color: var(--exam-violet); color: white; }
.palette-btn.active {
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--exam-primary);
  font-size: 1.05rem;
}

/* Sidebar toggle button for mobile */
.palette-drawer-toggle {
  display: none;
  position: fixed;
  bottom: 84px;
  right: 20px;
  z-index: 1001;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--exam-primary);
  border: none;
  color: white;
  font-size: 1.25rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* Tab Switching in Results */
.results-tab-bar {
  display: flex;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--exam-border);
  border-radius: 12px;
  padding: 6px;
  margin-bottom: 30px;
  gap: 4px;
}

.results-tab-btn {
  flex: 1;
  padding: 12px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--exam-muted);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--exam-transition);
}

.results-tab-btn.active {
  background: var(--exam-card);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* ============================================================================
   RESULTS & ANALYTICS DASHBOARD
   ============================================================================ */

.results-container {
  max-width: 960px;
  margin: 30px auto 100px;
  padding: 0 24px;
}

/* Performance Gauges Header Card */
.analytics-hero-card {
  background: linear-gradient(135deg, var(--exam-card) 0%, #1a253c 100%);
  border: 1px solid var(--exam-border);
  border-radius: var(--exam-radius-lg);
  padding: 30px 40px;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  box-shadow: var(--exam-shadow);
}

/* SVG Radial progress ring */
.svg-radial-wrap {
  position: relative;
  width: 140px;
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.svg-radial-wrap svg {
  transform: rotate(-90deg);
}

.svg-radial-bg {
  fill: none;
  stroke: rgba(255,255,255,0.04);
  stroke-width: 10;
}

.svg-radial-bar {
  fill: none;
  stroke: var(--exam-primary);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 377;
  stroke-dashoffset: 377;
  transition: stroke-dashoffset 1s ease-out;
}

.radial-score-val {
  position: absolute;
  font-size: 1.7rem;
  font-weight: 900;
  color: #fff;
  text-align: center;
  display: flex;
  flex-direction: column;
}

.radial-score-val span:last-child {
  font-size: 0.7rem;
  color: var(--exam-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero-eval-summary {
  flex: 1;
  min-width: 280px;
}

.performance-badge {
  display: inline-flex;
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.performance-badge.outstanding { background: var(--exam-green-bg); color: var(--exam-green); border: 1px solid rgba(16,185,129,0.2); }
.performance-badge.excellent { background: var(--exam-primary-hover); color: #fff; border: 1px solid rgba(99,102,241,0.2); }
.performance-badge.average { background: var(--exam-yellow-bg); color: var(--exam-yellow); border: 1px solid rgba(245,158,11,0.2); }
.performance-badge.needs-rev { background: var(--exam-red-bg); color: var(--exam-red); border: 1px solid rgba(239,68,68,0.2); }

.hero-eval-summary h2 {
  margin: 0 0 6px 0;
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
}

.hero-eval-summary p {
  margin: 0;
  color: var(--exam-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Analytics Stats Grid */
.analytics-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 40px;
}

.stat-card {
  background: var(--exam-card);
  border: 1px solid var(--exam-border);
  border-radius: var(--exam-radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--exam-transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255,255,255,0.12);
}

.stat-card-icon {
  font-size: 1.4rem;
  width: 42px;
  height: 42px;
  border-radius: var(--exam-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-card-meta {
  display: flex;
  flex-direction: column;
}

.stat-card-meta span:first-child {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  font-family: monospace;
}

.stat-card-meta span:last-child {
  font-size: 0.75rem;
  color: var(--exam-muted);
  font-weight: 600;
  text-transform: uppercase;
}

/* Solution Review cards */
.solutions-review-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.solution-q-card {
  background: var(--exam-card);
  border: 1px solid var(--exam-border);
  border-radius: var(--exam-radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.solution-q-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 16px;
  margin-bottom: 16px;
}

.solution-q-text {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.5;
  color: #fff;
}

.correctness-badge {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.correctness-badge.correct { background: var(--exam-green-bg); color: var(--exam-green); }
.correctness-badge.incorrect { background: var(--exam-red-bg); color: var(--exam-red); }
.correctness-badge.unattempted { background: var(--exam-grey-bg); color: var(--exam-muted); }

/* Review options */
.review-opts-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.review-opt-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.01);
  border: 1px solid var(--exam-border);
  border-radius: 10px;
  font-size: 0.9rem;
}

.review-opt-item.correct {
  border-color: var(--exam-green);
  background: rgba(16, 185, 129, 0.04);
}

.review-opt-item.selected-wrong {
  border-color: var(--exam-red);
  background: rgba(239, 68, 68, 0.04);
}

.review-badge {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--exam-border);
}

.review-opt-item.correct .review-badge {
  background: var(--exam-green);
  border-color: var(--exam-green);
  color: white;
}

.review-opt-item.selected-wrong .review-badge {
  background: var(--exam-red);
  border-color: var(--exam-red);
  color: white;
}

.solution-explanation-block {
  background: rgba(99, 102, 241, 0.03);
  border-left: 3px solid var(--exam-primary);
  padding: 16px;
  border-radius: 0 var(--exam-radius-sm) var(--exam-radius-sm) 0;
}

.solution-explanation-block h5 {
  margin: 0 0 6px 0;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--exam-primary);
  text-transform: uppercase;
}

.solution-explanation-block p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--exam-muted);
  line-height: 1.5;
}

/* Subjective Solution Review elements */
.res-la-eval-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 14px;
}

.res-la-box {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--exam-border);
  padding: 16px;
  border-radius: 12px;
}
.res-la-box h5 {
  margin: 0 0 10px 0;
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
}
.res-la-box.good h5 { color: var(--exam-green); }
.res-la-box.bad h5 { color: var(--exam-yellow); }
.res-la-box ul {
  margin: 0;
  padding-left: 18px;
  font-size: 0.82rem;
  color: var(--exam-muted);
  line-height: 1.5;
}
.res-la-box li {
  margin-bottom: 6px;
}

/* ============================================================================
   🏆 PREMIUM LEADERBOARD STYLING
   ============================================================================ */

.leaderboard-card {
  background: var(--exam-card);
  border: 1px solid var(--exam-border);
  border-radius: var(--exam-radius-lg);
  padding: 30px;
  box-shadow: var(--exam-shadow);
}

.leaderboard-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 10px;
}

.leaderboard-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--exam-border);
  border-radius: 12px;
  transition: var(--exam-transition);
}

.leaderboard-row.me {
  background: rgba(99, 102, 241, 0.08);
  border-color: var(--exam-primary);
}

.leaderboard-row:hover {
  background: rgba(255, 255, 255, 0.03);
  transform: translateX(4px);
}

.leaderboard-rank-col {
  display: flex;
  align-items: center;
  gap: 16px;
}

.rank-number-box {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 0.95rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--exam-border);
  color: var(--exam-muted);
}

.leaderboard-row:nth-child(1) .rank-number-box {
  background: linear-gradient(135deg, #ffd700 0%, #b8860b 100%);
  border-color: #ffd700;
  color: #000;
  box-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}

.leaderboard-row:nth-child(2) .rank-number-box {
  background: linear-gradient(135deg, #c0c0c0 0%, #808080 100%);
  border-color: #c0c0c0;
  color: #000;
}

.leaderboard-row:nth-child(3) .rank-number-box {
  background: linear-gradient(135deg, #cd7f32 0%, #8b4513 100%);
  border-color: #cd7f32;
  color: #fff;
}

.leaderboard-student-meta {
  display: flex;
  flex-direction: column;
}

.leaderboard-student-meta span:first-child {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
}

.leaderboard-student-meta span:last-child {
  font-size: 0.75rem;
  color: var(--exam-muted);
}

.leaderboard-score-col {
  text-align: right;
  display: flex;
  flex-direction: column;
}

.leaderboard-score-col span:first-child {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--exam-accent);
}

.leaderboard-score-col span:last-child {
  font-size: 0.75rem;
  color: var(--exam-muted);
}

/* ============================================================================
   RESPONSIVE DESIGN ADAPTATIONS
   ============================================================================ */

@media (max-width: 860px) {
  .exam-layout-grid {
    grid-template-columns: 1fr;
  }
  
  .exam-question-column {
    padding: 24px;
    padding-bottom: 120px;
  }
  
  .exam-sidebar-column {
    position: fixed;
    top: 72px;
    right: -320px;
    width: 320px;
    height: calc(100vh - 72px);
    z-index: 1000;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
  }
  
  .exam-sidebar-column.open {
    transform: translateX(-320px);
  }
  
  .palette-drawer-toggle {
    display: flex;
  }
}

@media (max-width: 600px) {
  .reg-card {
    padding: 24px;
  }
  
  .test-info-dash {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .analytics-hero-card {
    padding: 24px;
    flex-direction: column;
    text-align: center;
  }
  
  .exam-nav-footer {
    flex-direction: column;
    align-items: stretch;
  }
  
  .footer-nav-left, .footer-nav-right {
    flex-direction: column;
  }
  
  .res-la-eval-grid {
    grid-template-columns: 1fr;
  }
}

/* CHEAT WARNING OVERLAY */
.cheat-warning {
  position: fixed;
  top: 90px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: rgba(239, 68, 68, 0.95);
  color: white;
  padding: 14px 28px;
  border-radius: 30px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 10px 30px rgba(239, 68, 68, 0.4);
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  transition: all 0.3s ease;
}

.cheat-warning.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.warn-icon {
  font-size: 1.25rem;
}

/* Mobile-Specific Header Optimizations to prevent overlap */
@media (max-width: 600px) {
  .exam-header-bar {
    height: 60px;
    padding: 0 12px;
  }
  .eh-brand, .eh-separator {
    display: none !important;
  }
  .eh-left {
    gap: 8px;
    max-width: 45%;
  }
  .eh-title-info h3 {
    font-size: 0.85rem;
    max-width: 100%;
  }
  .eh-title-info span {
    font-size: 0.65rem;
  }
  .eh-right {
    gap: 8px;
    max-width: 55%;
    justify-content: flex-end;
  }
  .eh-timer-box {
    padding: 6px 10px;
    font-size: 0.85rem;
    gap: 4px;
  }
  .eh-right .btn-sec { /* Hide fullscreen button in header on mobile */
    display: none !important;
  }
  .eh-right .btn-warning {
    padding: 8px 12px;
    font-size: 0.8rem;
  }
}