/* ============================================
   SKILL TREE MAP
   ============================================ */

.tree-page {
  padding: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.tree-page .section-title {
  margin-top: 1rem;
}

/* Legend */
.tree-legend {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-secondary);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid;
}

.legend-dot.locked { background: transparent; border-color: var(--text-muted); }
.legend-dot.available { background: var(--accent-blue); border-color: var(--accent-blue); }
.legend-dot.in-progress { background: var(--accent-gold); border-color: var(--accent-gold); }
.legend-dot.completed { background: var(--accent-green); border-color: var(--accent-green); }

/* Quest Line Row */
.tree-quest-line {
  margin-bottom: 3rem;
}

.tree-ql-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.tree-ql-icon {
  font-size: 1.8rem;
}

.tree-ql-name {
  font-family: var(--font-title);
  font-size: 1.3rem;
  color: var(--accent-gold);
}

.tree-ql-desc {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-left: auto;
}

/* DAG Container */
.tree-dag {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1rem 0;
}

/* Quest Node */
.tree-node {
  position: relative;
  width: 200px;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}

.tree-node:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.tree-node.locked {
  opacity: 0.4;
  cursor: default;
  border-color: var(--text-muted);
}

.tree-node.locked:hover {
  transform: none;
  box-shadow: none;
}

.tree-node.available {
  border-color: var(--accent-blue);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.15);
}

.tree-node.in-progress {
  border-color: var(--accent-gold);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.2);
}

.tree-node.completed {
  border-color: var(--accent-green);
}

.tree-node.completed::after {
  content: '✅';
  position: absolute;
  top: -8px;
  right: -8px;
  font-size: 1.2rem;
}

.node-id {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.node-name {
  font-family: var(--font-title);
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
  line-height: 1.3;
}

.node-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
}

.node-xp {
  color: var(--accent-gold);
  font-weight: 600;
}

.node-prereqs {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
  margin-top: 0.4rem;
}

.prereq-tag {
  font-size: 0.65rem;
  padding: 0.1rem 0.4rem;
  border-radius: 6px;
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-purple);
}

/* Arrows between nodes (CSS-only) */
.tree-arrow {
  display: flex;
  align-items: center;
  color: var(--border-color);
  font-size: 1.5rem;
  padding: 0 0.3rem;
  user-select: none;
}

.tree-arrow.active {
  color: var(--accent-green);
}

/* Sub-quests panel (expandable) */
.node-subquests {
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--border-color);
  display: none;
}

.tree-node.expanded .node-subquests {
  display: block;
}

.sq-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.sq-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.sq-dot.locked { background: var(--text-muted); }
.sq-dot.available { background: var(--accent-blue); }
.sq-dot.completed { background: var(--accent-green); }

.sq-xp {
  margin-left: auto;
  color: var(--accent-gold);
  font-size: 0.7rem;
}

/* Responsive */
@media (max-width: 768px) {
  .tree-dag {
    flex-direction: column;
    align-items: stretch;
  }

  .tree-node {
    width: 100%;
  }

  .tree-arrow {
    transform: rotate(90deg);
    justify-content: center;
  }
}