/* ==========================================
   CSS VARIABLES & GLOBAL DESIGN SYSTEM
   ========================================== */
:root {
  /* Fonts */
  --font-primary: 'Inter', sans-serif;
  --font-header: 'Outfit', sans-serif;

  /* Theme Colors (Light Mode Default) */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;

  --border-color: #e2e8f0;
  --border-focus: #6366f1;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --primary-color: #6366f1;
  --primary-light: #e0e7ff;
  --primary-dark: #4f46e5;
  --primary-gradient: linear-gradient(135deg, #6366f1, #a855f7);
  --primary-glow: rgba(99, 102, 241, 0.15);

  --success-color: #10b981;
  --success-light: #ecfdf5;
  --success-border: #a7f3d0;

  --danger-color: #f43f5e;
  --danger-light: #fff1f2;
  --danger-border: #fecdd3;

  --warning-color: #f59e0b;
  --warning-light: #fef3c7;
  --warning-border: #fde68a;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px 2px rgba(99, 102, 241, 0.25);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  --header-height: 70px;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-primary: #090d16;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;

  --border-color: #1f2937;
  --border-focus: #818cf8;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --primary-color: #818cf8;
  --primary-light: #1e1b4b;
  --primary-dark: #4f46e5;
  --primary-gradient: linear-gradient(135deg, #818cf8, #c084fc);
  --primary-glow: rgba(129, 140, 248, 0.2);

  --success-color: #34d399;
  --success-light: #064e3b;
  --success-border: #065f46;

  --danger-color: #fb7185;
  --danger-light: #4c0519;
  --danger-border: #881337;

  --warning-color: #fbbf24;
  --warning-light: #78350f;
  --warning-border: #92400e;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
}

/* ==========================================
   BASE RESET & LAYOUT
   ========================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ==========================================
   APP HEADER
   ========================================== */
.app-header {
  height: var(--header-height);
  background-color: var(--bg-secondary);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-header);
  font-weight: 700;
  font-size: 1.25rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo i {
  font-size: 1.5rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.theme-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.theme-btn:hover {
  background: var(--border-color);
  color: var(--text-primary);
  transform: translateY(-2px);
}

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

.btn-header-back {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-header-back:hover {
  background: var(--border-color);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-header-back.hidden {
  display: none !important;
}

/* ==========================================
   CONTAINER AND COMMON COMPONENT STYLES
   ========================================== */
.main-container {
  flex: 1;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 40px 24px;
  display: flex;
  flex-direction: column;
}

.screen {
  display: none;
  opacity: 0;
  transform: translateY(15px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.screen.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  outline: none;
  user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  filter: brightness(1.05);
}

.btn-secondary {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-tertiary);
  border-color: var(--text-muted);
}

.btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-tertiary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px dashed var(--border-color);
}

.btn-tertiary:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
  background-color: var(--bg-tertiary);
}

.btn-danger {
  background: var(--danger-color);
  color: #ffffff;
}

.btn-danger:hover {
  background: #e11d48;
  box-shadow: 0 0 15px rgba(244, 63, 94, 0.3);
}

.btn-large {
  padding: 16px 36px;
  font-size: 1.1rem;
  border-radius: var(--radius-lg);
}

.btn-full {
  width: 100%;
}

/* ==========================================
   0. AUTHENTICATION SCREEN STYLES
   ========================================== */
.auth-card {
  max-width: 480px;
  margin: 60px auto;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 60%);
  z-index: 0;
  pointer-events: none;
}

.auth-tabs {
  position: relative;
  z-index: 1;
  display: flex;
  background-color: var(--bg-tertiary);
  padding: 6px;
  border-radius: var(--radius-md);
  margin-bottom: 32px;
  border: 1px solid var(--border-color);
}

.auth-tab-btn {
  flex: 1;
  border: none;
  background: none;
  padding: 12px;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.auth-tab-btn:hover {
  color: var(--text-primary);
}

.auth-tab-btn.active {
  background-color: var(--bg-secondary);
  color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.auth-form {
  position: relative;
  z-index: 1;
}

.auth-form-title {
  font-family: var(--font-header);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.auth-form-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 16px;
  color: var(--text-muted);
  font-size: 1rem;
}

.input-wrapper input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-fast);
}

.input-wrapper input:focus {
  border-color: var(--border-focus);
  background-color: var(--bg-secondary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.error-message {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--danger-color);
  background-color: var(--danger-light);
  border: 1px solid var(--danger-border);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  text-align: left;
}

.auth-divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 20px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  position: relative;
  z-index: 1;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border-color);
}

.auth-divider::before {
  margin-right: .5em;
}

.auth-divider::after {
  margin-left: .5em;
}

.btn-google {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  z-index: 1;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  width: 100%;
}

.btn-google:hover {
  background-color: var(--border-color);
  border-color: var(--text-muted);
}


/* ==========================================
   0.5. USER DASHBOARD STYLES
   ========================================== */
.dashboard-container {
  max-width: 1100px;
  margin: 32px auto;
  padding: 0 24px;
}

.dashboard-header-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--primary-gradient);
  color: #ffffff;
  padding: 32px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  margin-bottom: 40px;
  text-align: left;
}

.dashboard-user-info {
  display: flex;
  align-items: center;
  gap: 20px;
}

.user-avatar-icon {
  font-size: 2.8rem;
  opacity: 0.9;
}

#dashboard-welcome-title {
  font-family: var(--font-header);
  font-size: 1.8rem;
  font-weight: 800;
  margin: 0 0 4px 0;
  color: #ffffff;
}

.dashboard-welcome-subtitle {
  font-size: 0.95rem;
  margin: 0;
  opacity: 0.85;
}

.dashboard-section {
  margin-bottom: 48px;
  text-align: left;
}

.section-title {
  font-family: var(--font-header);
  font-size: 1.4rem;
  font-weight: 750;
  color: var(--text-primary);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.quiz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.quiz-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.quiz-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.quiz-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-focus);
}

.quiz-card:hover::before {
  opacity: 1;
}

.quiz-card-badge {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary-color);
  background-color: var(--primary-light);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.quiz-card-title {
  font-family: var(--font-header);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 10px 0;
  line-height: 1.4;
}

.quiz-card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin: 0 0 20px 0;
  line-height: 1.5;
  flex-grow: 1;
}

.quiz-card-meta {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.quiz-card-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.quiz-card-meta i {
  color: var(--primary-color);
}

.quiz-loading-placeholder {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px;
  color: var(--text-muted);
  font-style: italic;
  background-color: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
}

.btn-review-history {
  padding: 6px 12px;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  width: auto;
}

/* ==========================================
   1. SPLASH SCREEN STYLES
   ========================================== */
.splash-card {
  max-width: 680px;
  margin: 40px auto;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.splash-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 60%);
  z-index: 0;
  pointer-events: none;
}

.splash-badge {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 6px 16px;
  background-color: var(--primary-light);
  color: var(--primary-color);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
}

.splash-title {
  position: relative;
  z-index: 1;
  font-family: var(--font-header);
  font-weight: 800;
  font-size: 2.25rem;
  line-height: 1.25;
  margin-bottom: 16px;
}

.splash-desc {
  position: relative;
  z-index: 1;
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 40px;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}

.rules-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 40px;
  text-align: left;
}

.rule-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background-color: var(--bg-tertiary);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.rule-icon {
  font-size: 1.5rem;
  color: var(--primary-color);
}

.rule-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.rule-value {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
}

/* Username Input Styles */
.username-section {
  position: relative;
  z-index: 1;
  max-width: 400px;
  margin: 0 auto 32px auto;
  text-align: left;
}

.username-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.username-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.username-icon {
  position: absolute;
  left: 16px;
  color: var(--text-muted);
  font-size: 1rem;
}

.username-input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-fast);
}

.username-input:focus {
  border-color: var(--border-focus);
  background-color: var(--bg-secondary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.username-error-msg {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--danger-color);
  margin-top: 6px;
  transition: opacity var(--transition-fast);
}

.hidden {
  display: none !important;
}

/* Exam Attempts History Styles */
.history-dashboard {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-md);
  margin-top: 24px;
}

.history-title {
  font-family: var(--font-header);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.history-subtitle {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 24px;
}

.history-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.history-table th {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.history-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 500;
}

.history-table tr:last-child td {
  border-bottom: none;
}

.history-table tr:hover {
  background-color: var(--bg-tertiary);
}

.history-loading {
  text-align: center;
  padding: 32px !important;
  color: var(--text-muted);
  font-style: italic;
}

.history-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
}

.history-badge.pass {
  background-color: var(--success-light);
  color: var(--success-color);
}

.history-badge.fail {
  background-color: var(--danger-light);
  color: var(--danger-color);
}

#btn-start {
  position: relative;
  z-index: 1;
}

/* ==========================================
   2. QUIZ SCREEN STYLES (EXAM MODE)
   ========================================== */
.quiz-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
  align-items: start;
}

.quiz-main {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.quiz-progress-wrapper {
  margin-bottom: 32px;
}

.quiz-progress-text {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-weight: 600;
  font-size: 0.95rem;
}

#question-index-indicator {
  color: var(--text-secondary);
}

#quiz-timer {
  color: var(--primary-color);
  font-family: var(--font-header);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Red alert state when timer is low */
#quiz-timer.low-time {
  color: var(--danger-color);
  animation: pulse-red 1s infinite alternate;
}

@keyframes pulse-red {
  0% {
    transform: scale(1);
  }

  100% {
    transform: scale(1.05);
  }
}

.progress-bar-container {
  height: 8px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--primary-gradient);
  width: 0%;
  border-radius: var(--radius-full);
  transition: width var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
}

.question-card {
  margin-bottom: 32px;
}

.question-text {
  font-family: var(--font-header);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 24px;
}

.options-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.option-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  background-color: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-fast);
}

.option-card:hover {
  border-color: var(--text-muted);
  background-color: var(--bg-tertiary);
  transform: translateY(-1px);
}

.option-card.selected {
  border-color: var(--border-focus);
  background-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

/* Custom Checkbox/Radio circle indicator */
.option-circle {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  border: 2px solid var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.option-card.selected .option-circle {
  border-color: var(--primary-color);
  background-color: var(--primary-color);
}

/* Internal dot/checkmark inside active option indicator */
.option-circle::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: #ffffff;
  transform: scale(0);
  transition: transform var(--transition-fast) cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.option-card.selected .option-circle::after {
  transform: scale(1);
}

.option-label {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
}

.option-card.selected .option-label {
  color: var(--primary-dark);
}

/* Quiz actions footer buttons */
.quiz-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  gap: 16px;
}

/* SIDEBAR (QUESTION GRID NAVIGATOR) */
.sidebar-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 94px;
  /* header height + padding spacing */
}

.sidebar-title {
  font-family: var(--font-header);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.sidebar-subtitle {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 20px;
}

.nav-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.nav-grid-btn {
  height: 42px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
}

.nav-grid-btn:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--text-secondary);
}

/* Question Grid Button States */
.nav-grid-btn.current {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  background-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.nav-grid-btn.answered {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: #ffffff;
}

.nav-grid-btn.answered.current {
  border: 2px solid var(--text-primary);
}

.legend-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid var(--border-color);
  padding: 16px 0;
  margin-bottom: 20px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
}

.legend-current {
  border: 2.5px solid var(--primary-color);
  background-color: var(--primary-light);
}

.legend-answered {
  background-color: var(--primary-color);
}

.legend-unanswered {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

/* ==========================================
   3. RESULT & REVIEW SCREEN STYLES
   ========================================== */
.result-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.result-dashboard {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.result-header {
  margin-bottom: 32px;
}

.status-badge {
  display: inline-block;
  padding: 6px 16px;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.status-badge.pass {
  background-color: var(--success-light);
  color: var(--success-color);
  border: 1px solid var(--success-border);
}

.status-badge.fail {
  background-color: var(--danger-light);
  color: var(--danger-color);
  border: 1px solid var(--danger-border);
}

.result-title {
  font-family: var(--font-header);
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.result-message {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.result-stats-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 60px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

/* Score radial indicator */
.score-ring-container {
  position: relative;
  width: 140px;
  height: 140px;
}

.score-ring {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.score-ring-bg {
  fill: none;
  stroke: var(--bg-tertiary);
  stroke-width: 8;
}

.score-ring-fill {
  fill: none;
  stroke: var(--primary-color);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset var(--transition-slow) ease-in-out;
}

/* Colors for passing/failing stroke */
.score-ring-container.pass .score-ring-fill {
  stroke: var(--success-color);
}

.score-ring-container.fail .score-ring-fill {
  stroke: var(--danger-color);
}

.score-ring-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}

.score-value {
  font-family: var(--font-header);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
}

.score-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  margin-top: 4px;
}

/* Stats grid layout */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  flex: 1;
  max-width: 440px;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  text-align: left;
}

.stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.stat-icon.correct {
  background-color: var(--success-light);
  color: var(--success-color);
}

.stat-icon.incorrect {
  background-color: var(--danger-light);
  color: var(--danger-color);
}

.stat-icon.skipped {
  background-color: var(--border-color);
  color: var(--text-secondary);
}

.stat-icon.duration {
  background-color: var(--primary-light);
  color: var(--primary-color);
}

.stat-number {
  font-family: var(--font-header);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
  line-height: 1.1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.result-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  border-top: 1px solid var(--border-color);
  padding-top: 32px;
  flex-wrap: wrap;
}

/* DETAILED REVIEW PANEL STYLES */
.review-workspace {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(20px);
  animation: slide-up-fade var(--transition-normal) forwards;
}

.review-workspace.hidden {
  display: none !important;
}

@keyframes slide-up-fade {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.review-header {
  margin-bottom: 24px;
}

.review-title {
  font-family: var(--font-header);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.review-subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Horizontal Review Navigator Bar */
.review-nav-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 12px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.review-nav-btn {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all var(--transition-fast);
}

.review-nav-btn:hover {
  transform: translateY(-2px);
}

/* Color Coding buttons based on correct/incorrect */
.review-nav-btn.correct {
  background-color: var(--success-light);
  border-color: var(--success-border);
  color: var(--success-color);
}

.review-nav-btn.incorrect {
  background-color: var(--danger-light);
  border-color: var(--danger-border);
  color: var(--danger-color);
}

.review-nav-btn.skipped {
  background-color: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-secondary);
}

/* Current selected question inside review */
.review-nav-btn.active {
  box-shadow: 0 0 0 2px var(--border-focus);
  transform: scale(1.05);
}

/* Review detail question card */
.review-detail-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  background-color: var(--bg-primary);
}

.review-status-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-weight: 600;
  font-size: 0.85rem;
}

#review-q-index {
  color: var(--text-muted);
}

.review-badge {
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.review-badge.correct {
  background-color: var(--success-light);
  color: var(--success-color);
}

.review-badge.incorrect {
  background-color: var(--danger-light);
  color: var(--danger-color);
}

.review-badge.skipped {
  background-color: var(--warning-light);
  color: var(--warning-color);
}

.review-question-text {
  font-family: var(--font-header);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 24px;
}

/* Option States in Review Mode */
.options-container.review-mode .option-card {
  cursor: default;
  transform: none !important;
}

/* Option: User chose this and it was correct OR just correct option */
.options-container.review-mode .option-card.correct-answer {
  border-color: var(--success-color);
  background-color: var(--success-light);
}

.options-container.review-mode .option-card.correct-answer .option-circle {
  border-color: var(--success-color);
  background-color: var(--success-color);
}

.options-container.review-mode .option-card.correct-answer .option-circle::after {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 10px;
  color: #ffffff;
  background: transparent;
  transform: scale(1);
}

.options-container.review-mode .option-card.correct-answer .option-label {
  color: var(--success-color);
  font-weight: 600;
}

/* Option: User chose this and it was incorrect */
.options-container.review-mode .option-card.incorrect-user-choice {
  border-color: var(--danger-color);
  background-color: var(--danger-light);
}

.options-container.review-mode .option-card.incorrect-user-choice .option-circle {
  border-color: var(--danger-color);
  background-color: var(--danger-color);
}

.options-container.review-mode .option-card.incorrect-user-choice .option-circle::after {
  content: '\f00d';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 10px;
  color: #ffffff;
  background: transparent;
  transform: scale(1);
}

.options-container.review-mode .option-card.incorrect-user-choice .option-label {
  color: var(--danger-color);
  font-weight: 600;
}

/* Option: Neutral unchosen options */
.options-container.review-mode .option-card.neutral {
  opacity: 0.65;
}

.options-container.review-mode .option-card.neutral:hover {
  background-color: var(--bg-secondary);
  border-color: var(--border-color);
}

/* Explanation Panel */
.explanation-box {
  margin-top: 24px;
  background-color: var(--primary-light);
  border-left: 4px solid var(--primary-color);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px;
  transition: all var(--transition-normal);
}

.explanation-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--primary-color);
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.explanation-content {
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* ==========================================
   CONFIRMATION MODAL OVERLAY
   ========================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

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

.modal-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 440px;
  width: 90%;
  box-shadow: var(--shadow-xl);
  text-align: center;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.open .modal-card {
  transform: translateY(0);
}

.modal-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  background-color: var(--warning-light);
  color: var(--warning-color);
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.modal-title {
  font-family: var(--font-header);
  font-weight: 800;
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.modal-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
  line-height: 1.4;
}

.modal-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}

/* ==========================================
   APP FOOTER
   ========================================== */
.app-footer {
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

/* ==========================================
   RESPONSIVE DESIGN RESPONSES
   ========================================== */
@media (max-width: 992px) {
  .quiz-layout {
    grid-template-columns: 1fr;
  }

  .sidebar-card {
    position: static;
  }
}

@media (max-width: 768px) {
  .main-container {
    padding: 24px 16px;
  }

  .splash-card {
    padding: 32px 20px;
  }

  .splash-title {
    font-size: 1.75rem;
  }

  .rules-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .result-stats-row {
    flex-direction: column;
    gap: 32px;
  }

  .stats-grid {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .quiz-actions {
    flex-direction: column-reverse;
  }

  .quiz-actions .btn {
    width: 100%;
  }

  .nav-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* Premium styled code and strong blocks */
code {
  background-color: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: "SF Mono", Menlo, Monaco, monospace;
  font-size: 0.9em;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

strong {
  font-weight: 700;
  color: var(--text-primary);
}

/* ==========================================
   ADMIN PANEL & ANALYTICS STYLES
   ========================================== */
.admin-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.admin-header-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-md);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.admin-title-area h2 {
  font-family: var(--font-header);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.admin-title-area p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.admin-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.admin-stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color var(--transition-normal);
}

.admin-stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.admin-stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.admin-stat-info {
  display: flex;
  flex-direction: column;
}

.admin-stat-number {
  font-family: var(--font-header);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
}

.admin-stat-label {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
}

.admin-charts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .admin-charts-grid {
    grid-template-columns: 1fr;
  }
}

.admin-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.admin-card-title {
  font-family: var(--font-header);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.admin-card-title i {
  color: var(--primary-color);
}

.admin-chart-wrapper {
  position: relative;
  width: 100%;
  height: 240px;
}

/* SVG Chart Elements */
.chart-gridline {
  stroke: var(--border-color);
  stroke-width: 1;
  stroke-dasharray: 4, 4;
  opacity: 0.6;
}

.chart-axis {
  stroke: var(--text-secondary);
  stroke-width: 1;
}

.chart-label {
  fill: var(--text-secondary);
  font-size: 11px;
  font-family: var(--font-primary);
}

.chart-bar-rect {
  fill: url(#barGradient);
  rx: 4;
  ry: 4;
  transition: opacity 0.2s ease;
}

.chart-bar-rect:hover {
  fill: url(#barHoverGradient);
  opacity: 0.85;
}

.chart-line-path {
  fill: none;
  stroke: var(--primary-color);
  stroke-width: 3.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-area-path {
  fill: url(#areaGradient);
  opacity: 0.15;
}

.chart-dot {
  fill: var(--bg-secondary);
  stroke: var(--primary-color);
  stroke-width: 3;
  r: 5;
  transition: r 0.2s ease, stroke-width 0.2s ease;
  cursor: pointer;
}

.chart-dot:hover {
  r: 7;
  stroke-width: 4;
  stroke: var(--border-focus);
}

/* Admin Table styling */
.admin-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.admin-table th,
.admin-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
}

.admin-table th {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.admin-table tbody tr {
  transition: background-color 0.15s ease;
}

.admin-table tbody tr:hover {
  background: var(--bg-tertiary);
}

.admin-table td {
  color: var(--text-secondary);
}

.admin-table td strong {
  color: var(--text-primary);
}

.admin-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.admin-badge-pass {
  background: var(--success-light);
  color: var(--success-color);
  border: 1px solid var(--success-border);
}

.admin-badge-fail {
  background: var(--danger-light);
  color: var(--danger-color);
  border: 1px solid var(--danger-border);
}

.admin-badge-neutral {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

/* Slide-out or detail modal */
.admin-detail-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 24px;
}

.admin-detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: 12px;
}

.admin-detail-header h4 {
  font-family: var(--font-header);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
}

.admin-detail-actions {
  display: flex;
  gap: 12px;
}

/* ==========================================
   EXAM DOMAIN BREAKDOWN
   ========================================== */
.domain-breakdown-section {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  text-align: left;
}

.domain-breakdown-section .section-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.domain-breakdown-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.domain-card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.domain-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

.domain-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.domain-card-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.domain-icon-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  font-size: 1.2rem;
}

.domain-icon-1 { background: rgba(99, 102, 241, 0.15); color: #6366f1; }
.domain-icon-2 { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.domain-icon-3 { background: rgba(16, 185, 129, 0.15); color: #10b981; }
.domain-icon-4 { background: rgba(239, 68, 68, 0.15); color: #ef4444; }
.domain-icon-5 { background: rgba(6, 182, 212, 0.15); color: #06b6d4; }

.domain-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-color);
}

.domain-card-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.domain-weight-badge {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
}

.domain-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 1rem;
  text-align: left;
}

.domain-progress-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.domain-progress-track {
  flex-grow: 1;
  height: 8px;
  background: var(--bg-color);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.domain-progress-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s ease-out;
}

.domain-progress-fill-1 { background: #6366f1; }
.domain-progress-fill-2 { background: #f59e0b; }
.domain-progress-fill-3 { background: #10b981; }
.domain-progress-fill-4 { background: #ef4444; }
.domain-progress-fill-5 { background: #06b6d4; }

.domain-progress-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-color);
  min-width: 90px;
  text-align: right;
}

/* ==========================================
   ADMIN CREATE QUIZ FORM
   ========================================== */
.admin-form {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .form-row-2 {
    grid-template-columns: 1fr 2fr;
  }
  .form-row-3 {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.admin-form input[type="text"],
.admin-form input[type="number"],
.admin-form textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.admin-form input:focus,
.admin-form textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.admin-form input[type="file"] {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  border: 1px dashed var(--border-color);
  border-radius: 8px;
  cursor: pointer;
}

.admin-form .form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.5rem;
  gap: 12px;
}

.modal-card-large {
  max-width: 800px !important;
  text-align: left !important;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.btn-close-modal {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.btn-close-modal:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}

/* ==========================================
   SKELETON LOADER STYLES
   ========================================== */
.skeleton-box {
  display: inline-block;
  height: 1.2em;
  position: relative;
  overflow: hidden;
  background-color: var(--bg-tertiary);
  border-radius: 6px;
  vertical-align: middle;
  border: 1px solid var(--border-color);
}

.skeleton-box::after {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  transform: translateX(-100%);
  background-image: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.15) 20%,
    rgba(255, 255, 255, 0.4) 60%,
    rgba(255, 255, 255, 0) 100%
  );
  animation: shimmer 1.6s infinite ease-in-out;
  content: '';
}

@keyframes shimmer {
  100% {
    transform: translateX(100%);
  }
}

.dark-theme .skeleton-box::after {
  background-image: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.03) 20%,
    rgba(255, 255, 255, 0.08) 60%,
    rgba(255, 255, 255, 0) 100%
  );
}

.skeleton-card {
  border-radius: var(--border-radius);
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}