/* Dashboard */
.dashboard { animation: fadeIn 400ms ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.dashboard__hero {
  text-align: center;
  padding: var(--space-2xl) 0;
}
.dashboard__title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: var(--space-sm);
}
.dashboard__subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
}
.dashboard__pareto-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--pareto-accent-dim);
  border: 1px solid rgba(240,136,62,0.3);
  border-radius: var(--radius-full);
  color: var(--pareto-accent);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

/* Stats row */
.dashboard__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}
.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
}
.stat-card__value {
  font-size: var(--font-size-2xl);
  font-weight: 800;
}
.stat-card__value--rhino { color: var(--rhino-accent); }
.stat-card__value--gh { color: var(--gh-accent); }
.stat-card__value--pareto { color: var(--pareto-accent); }
.stat-card__label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}

/* Category sections */
.dashboard__category {
  margin: var(--space-2xl) 0;
}
.dashboard__category-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.dashboard__category-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: var(--font-size-lg);
}
.dashboard__category-icon--rhino { background: var(--rhino-accent-dim); color: var(--rhino-accent); }
.dashboard__category-icon--gh { background: var(--gh-accent-dim); color: var(--gh-accent); }

.dashboard__category-title { font-size: var(--font-size-xl); font-weight: 700; }
.dashboard__category-progress {
  margin-left: auto;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* Topic grid */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
}

.topic-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}
.topic-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--border-color);
  transition: background var(--transition-normal);
}
.topic-card--rhino::before { background: var(--rhino-accent); opacity: 0.5; }
.topic-card--gh::before { background: var(--gh-accent); opacity: 0.5; }
.topic-card:hover {
  border-color: var(--border-color-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.topic-card:hover::before { opacity: 1; }
.topic-card.completed { opacity: 0.75; }
.topic-card.completed::after {
  content: '\2713';
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--success);
  color: var(--text-inverse);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
}

.topic-card__rank {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}
.topic-card__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}
.topic-card__desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.5;
}
.topic-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}
.topic-card__time { display: flex; align-items: center; gap: 4px; }
.topic-card__difficulty { display: flex; align-items: center; gap: 4px; }

/* Progress ring */
.progress-ring { position: relative; display: inline-flex; }
.progress-ring__svg { transform: rotate(-90deg); }
.progress-ring__bg { fill: none; stroke: var(--border-color); }
.progress-ring__fill { fill: none; transition: stroke-dashoffset 600ms ease; }
.progress-ring__text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: 700;
}