/* ==========================================================================
   ATLAS ACADEMY - Student Dashboard Styles
   ========================================================================== */

.dashboard-hero {
  padding: 40px 0 32px;
  background: linear-gradient(180deg, rgba(16, 21, 34, 0.6) 0%, rgba(10, 13, 20, 0) 100%);
  border-bottom: 1px solid var(--border-subtle);
}

.dashboard-welcome {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.dashboard-avatar-lg {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-medium);
  box-shadow: 0 0 16px rgba(0, 0, 0, 0.4);
}

.dashboard-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.stat-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--border-medium);
}

.stat-card.accent-blue::before { background: var(--accent-primary); }
.stat-card.accent-gold::before { background: var(--accent-gold); }
.stat-card.accent-green::before { background: var(--accent-success); }

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-mono);
  line-height: 1.1;
}

.stat-subtext {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* Dashboard Tabs */
.dashboard-tabs-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 32px;
  overflow-x: auto;
}

.dashboard-tab-btn {
  padding: 14px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.dashboard-tab-btn:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.02);
}

.dashboard-tab-btn.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

.tab-badge-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.dashboard-tab-btn.active .tab-badge-count {
  background-color: var(--accent-primary);
  color: #ffffff;
  border-color: transparent;
}

/* Continue Learning Master Card */
.continue-learning-card {
  background: linear-gradient(135deg, #131929 0%, #0d121c 100%);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 28px;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 40px;
  position: relative;
}

.continue-thumb-wrap {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.continue-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.continue-play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 13, 20, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.continue-thumb-wrap:hover .continue-play-overlay {
  background: rgba(10, 13, 20, 0.2);
}

.play-circle-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #ffffff;
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.3);
  transition: transform var(--transition-fast);
}

.continue-thumb-wrap:hover .play-circle-btn {
  transform: scale(1.1);
}

/* Certificate Cards in Dashboard */
.cert-card {
  background-color: var(--bg-surface);
  border: 1px solid rgba(226, 179, 87, 0.25);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
}

.cert-card:hover {
  border-color: var(--accent-gold);
  box-shadow: 0 0 24px rgba(226, 179, 87, 0.15);
  transform: translateY(-2px);
}

.cert-seal-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-gold-subtle);
  border: 1px solid rgba(226, 179, 87, 0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  margin-bottom: 16px;
}

/* Activity Feed */
.activity-feed {
  display: flex;
  flex-direction: column;
  position: relative;
}

.activity-feed::before {
  content: "";
  position: absolute;
  top: 14px;
  bottom: 14px;
  left: 17px;
  width: 2px;
  background-color: var(--border-subtle);
}

.activity-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 16px 0;
  position: relative;
}

.activity-node {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--bg-surface-elevated);
  border: 2px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  z-index: 2;
  font-size: 0.9rem;
}

.activity-node.node-quiz { border-color: var(--accent-primary); color: var(--accent-primary); }
.activity-node.node-lesson { border-color: var(--accent-success); color: var(--accent-success); }
.activity-node.node-enrolled { border-color: var(--accent-gold); color: var(--accent-gold); }

.activity-content {
  flex-grow: 1;
}

.activity-title {
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.activity-detail {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.activity-time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Empty States */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  background-color: var(--bg-surface-subtle);
  border: 1px dashed var(--border-medium);
  border-radius: var(--radius-xl);
}

.empty-state-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--bg-surface-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--text-muted);
}

.empty-state-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.empty-state-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  max-width: 420px;
  margin: 0 auto 20px;
}

@media (max-width: 900px) {
  .dashboard-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .continue-learning-card { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .dashboard-stats-grid { grid-template-columns: 1fr; }
  .dashboard-welcome { flex-direction: column; align-items: flex-start; }
}