/* ==============================================
   Homepage Styles - Duolingo-inspired Study Hub
   ============================================== */

/* Page Layout */
.homepage {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.homepage-content {
  flex: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-lg);
  width: 100%;
}

/* ==============================================
   Welcome Section
   ============================================== */
.welcome-section {
  margin-bottom: var(--space-lg);
}

.welcome-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.welcome-greeting {
  font-size: var(--font-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.welcome-stats {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: var(--font-sm);
  color: var(--text-secondary);
  white-space: nowrap;
}

.welcome-level {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.level-icon {
  display: flex;
  align-items: center;
  color: var(--accent);
}

.level-icon svg {
  width: 18px;
  height: 18px;
}

.welcome-streak {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: #f59e0b;
}

.welcome-streak-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.streak-count {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.streak-multiplier-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 6px;
  background: linear-gradient(135deg, #ef4444, #f59e0b);
  color: white;
  border-radius: var(--radius-sm);
  font-size: var(--font-xs);
  font-weight: 700;
  margin-left: var(--space-xs);
}

.welcome-exam-countdown {
  font-size: var(--font-sm);
  color: var(--text-muted);
  margin: var(--space-xs) 0 0 0;
}

/* ==============================================
   Pace Status Banner
   ============================================== */
.pace-status-banner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  background: var(--surface-elevated);
  border: 1px solid var(--border-subtle);
  animation: fadeIn 0.3s ease-out;
}

.pace-status-banner.hidden {
  display: none;
}

.pace-icon {
  font-size: 1.75rem;
  flex-shrink: 0;
}

.pace-content {
  flex: 1;
  min-width: 0;
}

.pace-title {
  font-weight: 600;
  font-size: var(--font-base);
  color: var(--text-primary);
  margin-bottom: 2px;
}

.pace-message {
  font-size: var(--font-sm);
  color: var(--text-muted);
}

.pace-stats {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.pace-stat {
  font-size: var(--font-xs);
  color: var(--text-muted);
  white-space: nowrap;
}

.pace-stat-sep {
  color: var(--border-subtle);
  font-size: var(--font-xs);
}

/* Pace Status Variants */

/* On Track - Green/Teal */
.pace-status-banner.pace-on-track {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
  border-color: rgba(16, 185, 129, 0.3);
}
.pace-status-banner.pace-on-track .pace-title { color: #10b981; }

/* Ahead - Blue/Purple */
.pace-status-banner.pace-ahead {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
  border-color: rgba(99, 102, 241, 0.3);
}
.pace-status-banner.pace-ahead .pace-title { color: #8b5cf6; }

/* Pick Up Pace - Amber/Orange */
.pace-status-banner.pace-pickup {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(251, 146, 60, 0.1) 100%);
  border-color: rgba(245, 158, 11, 0.3);
}
.pace-status-banner.pace-pickup .pace-title { color: #f59e0b; }

/* Focus Mode - Pink/Red */
.pace-status-banner.pace-focus {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.1) 0%, rgba(239, 68, 68, 0.1) 100%);
  border-color: rgba(236, 72, 153, 0.3);
}
.pace-status-banner.pace-focus .pace-title { color: #ec4899; }

/* Onboarding - Green seedling */
.pace-status-banner.pace-onboarding {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
  border-color: rgba(34, 197, 94, 0.3);
}
.pace-status-banner.pace-onboarding .pace-title { color: #22c55e; }

/* Review Day - Cyan */
.pace-status-banner.pace-review {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
  border-color: rgba(6, 182, 212, 0.3);
}
.pace-status-banner.pace-review .pace-title { color: #06b6d4; }

/* Exam Prep - Gold */
.pace-status-banner.pace-exam-prep {
  background: linear-gradient(135deg, rgba(234, 179, 8, 0.1) 0%, rgba(245, 158, 11, 0.1) 100%);
  border-color: rgba(234, 179, 8, 0.3);
}
.pace-status-banner.pace-exam-prep .pace-title { color: #eab308; }

/* ==============================================
   Flow Card
   ============================================== */
.flow-card {
  position: relative;
  padding: var(--space-lg);
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(16, 185, 129, 0.08));
  border: 1px solid var(--border-subtle);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.flow-card__glow {
  position: absolute;
  inset: -40% 40% auto -30%;
  height: 220px;
  background: radial-gradient(circle at 30% 30%, rgba(14, 165, 233, 0.2), transparent 60%);
  opacity: 0.6;
  pointer-events: none;
}

.flow-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-md);
  position: relative;
  z-index: 1;
}

.flow-card__title {
  margin: 0;
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 700;
  color: var(--text-primary);
}

.flow-card__message {
  margin: 4px 0 0;
  font-size: var(--font-sm);
  color: var(--text-secondary);
}

.flow-card__countdown {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: var(--font-sm);
  white-space: nowrap;
}

.flow-card__stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  position: relative;
  z-index: 1;
}

.flow-card__label {
  display: block;
  font-size: var(--font-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 600;
}

.flow-card__totals {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.flow-mini-card {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 10px;
  border-radius: 14px;
  border: 1px solid var(--border-subtle);
  background: var(--surface-elevated);
  width: 100%;
}

.flow-mini-card--learn {
  border-color: rgba(37, 99, 235, 0.55);
  background: rgba(37, 99, 235, 0.12);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.18);
}

.flow-mini-card--review {
  border-color: rgba(168, 85, 247, 0.55);
  background: rgba(168, 85, 247, 0.12);
  box-shadow: 0 8px 18px rgba(168, 85, 247, 0.18);
}

.flow-mini-card--quiz {
  border-color: rgba(234, 179, 8, 0.55);
  background: rgba(234, 179, 8, 0.14);
  box-shadow: 0 8px 18px rgba(234, 179, 8, 0.18);
}

.flow-mini-card__icon {
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--text-primary);
}

.flow-mini-card__icon svg {
  width: 36px;
  height: 36px;
}

.flow-mini-card--learn .flow-mini-card__icon {
  width: 52px;
  height: 52px;
  color: #2563eb;
}

.flow-mini-card--learn .flow-mini-card__icon svg {
  width: 36px;
  height: 36px;
}

.flow-mini-card__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.flow-mini-card__value {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.flow-mini-card__label {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--text-secondary);
}

.flow-mini-card__sub {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--text-secondary);
}

.flow-mini-card--review .flow-mini-card__icon {
  color: #a855f7;
}

.flow-mini-card--quiz .flow-mini-card__icon {
  color: #eab308;
}

.flow-subtotals {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.flow-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  border-radius: 0;
  background: transparent;
  border: none;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
  box-shadow: none;
}

.flow-chip--stack {
  align-items: flex-start;
}

.flow-chip__stack {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.flow-chip__sub {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--text-secondary);
}

.flow-chip__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
}

.flow-chip__icon svg {
  width: 18px;
  height: 18px;
}

.flow-chip--learn {
  color: #2563eb;
}

.flow-chip--review {
  color: #16a34a;
}

.flow-chip--quiz {
  color: #d97706;
}


.flow-achievements {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: var(--space-sm);
}

.flow-achievements__label {
  font-size: var(--font-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 600;
}

.flow-achievements__items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.flow-achievement {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--text-secondary);
}

.flow-achievement__icon {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.flow-achievement__icon svg {
  width: 16px;
  height: 16px;
}

.flow-achievement--streak .flow-achievement__icon {
  color: #f97316;
}

.flow-achievement--xp .flow-achievement__icon {
  color: #2563eb;
}

.flow-achievement--mastery .flow-achievement__icon {
  color: #a855f7;
}


@media (max-width: 640px) {
  .flow-card {
    padding: var(--space-md);
  }

  .flow-card__header {
    flex-direction: column;
    align-items: flex-start;
  }

  .flow-card__stats {
    flex-direction: column;
    align-items: flex-start;
  }

  .flow-card__totals {
    grid-template-columns: 1fr;
  }

}

[data-theme="dark"] .flow-card {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(16, 185, 129, 0.1));
  border-color: rgba(148, 163, 184, 0.2);
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.35);
}


[data-theme="dark"] .flow-dot {
  background: rgba(148, 163, 184, 0.25);
  box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.2);
}

/* Mobile adjustments for pace status */
@media (max-width: 600px) {
  .pace-status-banner {
    flex-wrap: wrap;
    padding: var(--space-md);
  }
  .pace-icon { font-size: 1.5rem; }
  .pace-content { flex: 1 1 calc(100% - 3rem); }
  .pace-stats {
    width: 100%;
    justify-content: flex-start;
    margin-top: var(--space-xs);
    padding-top: var(--space-xs);
    border-top: 1px solid var(--border-subtle);
  }
}

/* ==============================================
   Today's Session Card
   ============================================== */
.session-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.session-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.session-title {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.session-xp {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--success);
  background: rgba(34, 197, 94, 0.1);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
}

/* Session Tasks */
.session-tasks {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.session-task {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-hover);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.session-task:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent);
  transform: translateX(4px);
}

.session-task::after {
  content: '→';
  font-size: var(--font-lg);
  color: var(--text-muted);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.session-task:hover::after {
  opacity: 1;
}

.session-task.completed {
  opacity: 0.6;
}

.session-task.completed .task-content {
  text-decoration: line-through;
}

.session-task.in-progress {
  border: 2px solid var(--accent);
  animation: pulse-border 2s infinite;
}

@keyframes pulse-border {
  0%, 100% { border-color: var(--accent); }
  50% { border-color: transparent; }
}

.task-checkbox {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  transition: all var(--transition-fast);
}

.session-task.completed .task-checkbox {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.bonus-task.completed {
  opacity: 0.6;
}

.bonus-task.completed .bonus-task-name {
  text-decoration: line-through;
}

.bonus-task.completed .task-checkbox {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.task-checkbox-icon {
  width: 14px;
  height: 14px;
}

.task-content {
  flex: 1;
}

.task-type {
  font-size: var(--font-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.task-type.learn { color: var(--accent); }
.task-type.review { color: #8b5cf6; }
.task-type.test { color: #f59e0b; }

.task-description {
  font-size: var(--font-sm);
  color: var(--text-secondary);
}

.task-xp {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--success);
  white-space: nowrap;
}

/* Session Start Button */
.session-start-btn {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-size: var(--font-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: var(--touch-target-min);
}

.session-start-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.session-start-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.session-start-btn.bonus-mode {
  background: linear-gradient(135deg, #22c55e, #16a34a);
}

.session-start-btn.bonus-mode:hover {
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4);
}

.session-start-btn.hidden {
  display: none;
}

/* Session Complete State */
.session-complete {
  text-align: center;
  padding: var(--space-lg);
}

.session-complete-icon {
  font-size: 48px;
  margin-bottom: var(--space-sm);
}

.session-complete-title {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--success);
  margin-bottom: var(--space-xs);
}

.session-complete-subtitle {
  font-size: var(--font-sm);
  color: var(--text-muted);
}

/* ==============================================
   Subject Cards Grid
   ============================================== */
.subjects-section {
  margin-bottom: var(--space-xl);
}

.section-title {
  font-size: var(--font-base);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-md);
}

.subject-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.subject-card-home {
  position: relative;
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
}

.subject-card-home::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 120% at 100% 0%,
      color-mix(in srgb, var(--subject-color, var(--accent)) 16%, transparent) 0%,
      transparent 60%);
  opacity: 0.7;
  pointer-events: none;
  z-index: 0;
}

[data-theme="dark"] .subject-card-home::before {
  background: radial-gradient(200% 180% at 100% 0%,
      color-mix(in srgb, var(--subject-color, var(--accent)) 22%, transparent) 0%,
      transparent 92%);
  opacity: 0.5;
}

.subject-card-home:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Subject Card Header */
.subject-card-header {
  margin-bottom: var(--space-md);
  padding-right: 32px; /* Space for absolute icon */
  position: relative;
  z-index: 1;
}

.subject-card-name {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1;
}

.subject-card-metrics {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  position: relative;
  z-index: 1;
}

.subject-metric {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-sm);
}

.subject-metric-label {
  color: var(--text-muted);
}

.subject-metric-value {
  color: var(--text-secondary);
  font-weight: 500;
}

.subject-metric-value.warning {
  color: var(--warning);
}

.subject-metric-value.danger {
  color: var(--error);
}

/* Mastery Level Badge */
.mastery-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 2px 8px;
  background: var(--bg-hover);
  border-radius: var(--radius-full);
  font-size: var(--font-xs);
  font-weight: 600;
}

.mastery-badge.lv1 { color: var(--text-muted); }
.mastery-badge.lv2 { color: #22c55e; }
.mastery-badge.lv3 { color: #3b82f6; }
.mastery-badge.lv4 { color: #8b5cf6; }
.mastery-badge.lv5 { color: #f59e0b; }
.mastery-badge.lv6 { color: #f97316; }
.mastery-badge.lv7 { color: #ef4444; }
.mastery-badge.lv8 { color: #ec4899; }
.mastery-badge.lv9 { color: #fbbf24; }

/* Attribute-based mastery colours (9-level system) */
.mastery-badge[data-mastery-level="1"] { color: var(--text-muted); }
.mastery-badge[data-mastery-level="2"] { color: #22c55e; }
.mastery-badge[data-mastery-level="3"] { color: #3b82f6; }
.mastery-badge[data-mastery-level="4"] { color: #8b5cf6; }
.mastery-badge[data-mastery-level="5"] { color: #f59e0b; }
.mastery-badge[data-mastery-level="6"] { color: #f97316; }
.mastery-badge[data-mastery-level="7"] { color: #ef4444; }
.mastery-badge[data-mastery-level="8"] { color: #ec4899; }
.mastery-badge[data-mastery-level="9"] { color: #fbbf24; }

/* Subject Card Icon - Positioned top-right */
.subject-card-icon {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--subject-color, var(--accent));
}

.subject-card-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Subject Card - No Content (Greyed Out) */
.subject-card-home.no-content {
  opacity: 0.6;
  cursor: default;
  border-style: dashed;
}

.subject-card-home.no-content:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--border);
}

.subject-card-home.no-content .subject-card-name {
  color: var(--text-muted);
}

/* Coming Soon Badge */
.subject-card-coming-soon {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding-top: var(--space-sm);
}

.coming-soon-badge {
  display: inline-block;
  background: var(--bg-hover);
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  width: fit-content;
}

.coming-soon-text {
  font-size: var(--font-sm);
  color: var(--text-muted);
}

/* Subject Card with Color Accent */
.subject-card-home[style*="--subject-color"] {
  border-left: 3px solid var(--subject-color);
}

.subject-card-home.no-content[style*="--subject-color"] {
  border-left-style: dashed;
}

/* Subject Card Quick Actions */
.subject-card-actions {
  display: flex;
  gap: var(--space-md);
  padding-top: var(--space-md);
  margin-top: var(--space-md);
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 1;
}

/* Quick actions row for subject cards in session scroll */
.subject-quick-actions {
  display: flex;
  gap: var(--space-2);
  padding-top: var(--space-2);
  margin-top: var(--space-2);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .subject-quick-actions {
  border-top-color: rgba(0, 0, 0, 0.06);
}

.subject-quick-action {
  flex: 1;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 6px 10px;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-sm);
  color: #8b5cf6;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.subject-quick-action:hover:not(.disabled) {
  background: rgba(139, 92, 246, 0.2);
  border-color: rgba(139, 92, 246, 0.3);
  color: #a78bfa;
  transform: translateY(-1px);
}

.subject-quick-action svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.subject-quick-action-label {
  white-space: nowrap;
}

.subject-quick-action.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}

[data-theme="light"] .subject-quick-action.disabled {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
}

/* ==============================================
   Keep Going Section (Bonus Challenges)
   ============================================== */
.keep-going-section {
  background: var(--bg-card);
  border: 2px solid var(--success);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.keep-going-section.hidden {
  display: none;
}

.keep-going-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.keep-going-title {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--success);
  margin: 0;
}

.keep-going-bonus {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--success);
  background: rgba(34, 197, 94, 0.1);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
}

.keep-going-tasks {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.bonus-task {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-hover);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.bonus-task:hover {
  background: rgba(34, 197, 94, 0.1);
}

.bonus-task-content {
  flex: 1;
}

.bonus-task-name {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.bonus-task-xp {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--success);
}

/* 2x XP Bonus Banner */
.bonus-multiplier-banner {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: white;
  text-align: center;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  margin-top: var(--space-md);
  font-weight: 600;
}

.bonus-multiplier-banner.hidden {
  display: none;
}

/* Unified Bonus Section (inside session card) */
.bonus-section {
  margin-top: var(--space-lg);
  animation: fadeIn 0.3s ease;
}

.bonus-section.hidden {
  display: none;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.bonus-separator {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.bonus-separator-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--success), transparent);
}

.bonus-separator-text {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--success);
  text-align: center;
  white-space: nowrap;
  padding: var(--space-xs) var(--space-sm);
  background: rgba(34, 197, 94, 0.1);
  border-radius: var(--radius-full);
}

.bonus-tasks {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* ==============================================
   Your Journey Section
   ============================================== */
.journey-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.journey-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

.journey-title {
  font-size: var(--font-base);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0;
}

.journey-xp-total {
  font-size: var(--font-base);
  font-weight: 600;
  color: var(--text-primary);
}

.journey-level-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
  font-size: var(--font-sm);
}

.journey-current-level {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-primary);
  font-weight: 500;
}

.journey-level-icon {
  display: inline-flex;
  color: var(--accent);
}

.journey-level-icon svg {
  width: 18px;
  height: 18px;
}

.journey-next-level {
  color: var(--text-muted);
}

.journey-progress-bar {
  height: 8px;
  background: var(--bg-hover);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-sm);
}

.journey-progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.journey-progress-text {
  text-align: right;
  font-size: var(--font-sm);
  color: var(--text-muted);
}

/* ==============================================
   Journey Streak Section
   ============================================== */
.journey-streak-section {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.journey-streak-section.hidden {
  display: none;
}

.journey-streak-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.journey-streak-fire {
  font-size: 1.25rem;
  animation: fireFlicker 1s ease-in-out infinite;
}

@keyframes fireFlicker {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.journey-streak-days {
  font-size: var(--font-xl);
  font-weight: 700;
  color: #f59e0b;
}

.journey-streak-label {
  font-size: var(--font-sm);
  color: var(--text-muted);
}

.journey-streak-multiplier {
  margin-left: auto;
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-hover);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  font-size: var(--font-sm);
  font-weight: 600;
}

.journey-streak-multiplier.active {
  background: linear-gradient(135deg, #ef4444, #f59e0b);
  color: white;
}

.journey-streak-progress {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.journey-streak-bar {
  flex: 1;
  height: 6px;
  background: var(--bg-hover);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.journey-streak-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #ef4444, #f59e0b);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.journey-streak-next {
  font-size: var(--font-xs);
  color: var(--text-muted);
  white-space: nowrap;
}

.journey-streak-freezes {
  margin-top: var(--space-sm);
  font-size: var(--font-xs);
  color: var(--text-muted);
}

.journey-streak-freezes.hidden {
  display: none;
}

.freeze-label {
  margin-right: var(--space-xs);
}

/* ==============================================
   Browse Topics Link
   ============================================== */
.browse-topics-link {
  display: block;
  text-align: center;
  padding: var(--space-md);
  color: var(--accent);
  font-size: var(--font-sm);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.browse-topics-link:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* ==============================================
   First Time User - Exam Year Selector
   ============================================== */
.exam-setup-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.exam-setup-overlay.hidden {
  display: none;
}

.exam-setup-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  max-width: 400px;
  width: 100%;
  text-align: center;
}

.exam-setup-title {
  font-size: var(--font-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.exam-setup-subtitle {
  font-size: var(--font-base);
  color: var(--text-muted);
  margin-bottom: var(--space-xl);
}

.exam-year-select {
  width: 100%;
  padding: var(--space-md);
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-lg);
  text-align: center;
  cursor: pointer;
  margin-bottom: var(--space-lg);
  min-height: var(--touch-target-min);
}

.exam-year-select:focus {
  outline: none;
  border-color: var(--accent);
}

.exam-setup-btn {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-size: var(--font-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: var(--touch-target-min);
}

.exam-setup-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

/* ==============================================
   Mobile Responsive
   ============================================== */
@media (max-width: 600px) {
  .homepage-content {
    padding: var(--space-md);
  }

  .welcome-top {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .welcome-stats {
    flex-wrap: wrap;
  }

  .subject-cards-grid {
    grid-template-columns: 1fr;
  }

  .subject-card-home {
    padding: var(--space-md);
  }

  .subject-metric {
    flex-direction: row;
    justify-content: space-between;
  }

  .subject-card-actions {
    flex-direction: row;
    gap: var(--space-sm);
  }

  .subject-quick-action {
    padding: 6px 8px;
    font-size: 9px;
  }

  .subject-quick-action svg {
    width: 12px;
    height: 12px;
  }

  .session-card,
  .keep-going-section,
  .journey-section {
    padding: var(--space-md);
  }

  .session-task,
  .bonus-task {
    padding: var(--space-sm) var(--space-md);
  }
}

/* ==============================================
   Task Modals (Learn, Review, Test)
   ============================================== */
.task-modal {
  position: fixed;
  inset: 0;
  max-width: 100vw;
  max-height: 100vh;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  border: none;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  animation: slideUp 0.3s ease-out;
  overflow: hidden;
}

.task-modal::backdrop {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.task-modal.hidden {
  display: none;
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.task-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.task-modal-back {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: var(--font-sm);
  cursor: pointer;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-md);
}

.task-modal-back:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.task-modal-title {
  font-weight: 600;
  color: var(--text-primary);
}

.task-modal-complete {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--success);
  color: white;
  border: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  font-weight: 500;
  cursor: pointer;
}

.task-modal-complete:hover {
  background: #16a34a;
}

.task-modal-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

.task-modal-footer {
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}

.view-full-link {
  color: var(--accent);
  font-size: var(--font-sm);
}

/* Flashcard Modal Specific */
.flashcard-deck {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.flashcard-card {
  width: 100%;
  max-width: 400px;
  min-height: 250px;
  position: relative;
  cursor: pointer;
  transform-style: preserve-3d;
  transition: transform 0.6s;
}

.flashcard-card.flipped {
  transform: rotateY(180deg);
}

.flashcard-front,
.flashcard-back {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  min-height: 250px;
  backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.flashcard-back {
  transform: rotateY(180deg);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(16, 185, 129, 0.1));
  border-color: rgba(34, 197, 94, 0.3);
}

.flashcard-question {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.flashcard-answer {
  font-size: var(--font-base);
  color: var(--text-primary);
  margin: 0;
}

.flashcard-hint {
  font-size: var(--font-sm);
  color: var(--text-muted);
  margin-top: var(--space-md);
}

.flashcard-controls {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  justify-content: center;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
}

.flashcard-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-xl);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 120px;
}

.flashcard-btn .btn-icon {
  font-size: 1.5rem;
}

.flashcard-btn .btn-text {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.flashcard-btn.incorrect:hover {
  border-color: var(--error);
  background: rgba(239, 68, 68, 0.1);
}

.flashcard-btn.correct:hover {
  border-color: var(--success);
  background: rgba(34, 197, 94, 0.1);
}

.flashcard-count,
.flashcard-score {
  font-size: var(--font-sm);
  color: var(--text-secondary);
}

.score-correct {
  color: var(--success);
  font-weight: 600;
}

/* Quiz Modal Specific */
.quiz-content {
  flex: 1;
  padding: var(--space-xl);
  max-width: 600px;
  margin: 0 auto;
  width: 100%;
}

.quiz-question {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xl);
  text-align: center;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.quiz-option {
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-base);
  color: var(--text-primary);
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--bg-hover);
}

.quiz-option.correct {
  border-color: var(--success);
  background: rgba(34, 197, 94, 0.1);
}

.quiz-option.incorrect {
  border-color: var(--error);
  background: rgba(239, 68, 68, 0.1);
}

.quiz-option:disabled {
  cursor: default;
}

.quiz-progress,
.quiz-score {
  font-size: var(--font-sm);
  color: var(--text-secondary);
}

.quiz-feedback {
  text-align: center;
  padding: var(--space-xl);
}

.quiz-feedback.hidden {
  display: none;
}

.feedback-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.feedback-text {
  font-size: var(--font-base);
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.quiz-next-btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  font-size: var(--font-base);
  font-weight: 500;
  cursor: pointer;
}

.quiz-next-btn:hover {
  background: var(--accent-hover);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--success);
  color: white;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  font-weight: 600;
  z-index: 10000;
  animation: toastIn 0.3s ease-out;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* ==============================================
   Practice Cards Section (Flashcards & Quiz)
   ============================================== */
.practice-section {
  margin-bottom: var(--space-xl);
}

.practice-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.practice-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.practice-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.practice-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.practice-card-icon svg {
  width: 28px;
  height: 28px;
}

.practice-card-flashcards .practice-card-icon {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(139, 92, 246, 0.1));
  color: #8b5cf6;
}

.practice-card-quiz .practice-card-icon {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(34, 197, 94, 0.1));
  color: #22c55e;
}

.practice-card-content {
  flex: 1;
  min-width: 0;
}

.practice-card-title {
  font-size: var(--font-base);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--space-xs) 0;
}

.practice-card-desc {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.practice-card-arrow {
  color: var(--text-muted);
  flex-shrink: 0;
}

.practice-card-arrow svg {
  width: 20px;
  height: 20px;
}

.practice-card:hover .practice-card-arrow {
  color: var(--accent);
}

/* Disabled practice card (Coming Soon) */
.practice-card-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  position: relative;
}

.practice-card-disabled:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--border);
}

.practice-card-disabled .practice-card-icon {
  filter: grayscale(100%);
}

.practice-card-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  background: linear-gradient(135deg, #6b7280, #4b5563);
  color: white;
  font-size: 10px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Mobile: Stack cards vertically */
@media (max-width: 500px) {
  .practice-cards-grid {
    grid-template-columns: 1fr;
  }

  .practice-card {
    padding: var(--space-md);
  }

  .practice-card-icon {
    width: 40px;
    height: 40px;
  }

  .practice-card-icon svg {
    width: 24px;
    height: 24px;
  }
}