/* ── Page header ─────────────────────────────────────────── */

.skill-tree-page-title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.skill-tree-page-sub {
  font-size: 0.8rem;
  opacity: 0.5;
  margin-top: 0.15rem;
  font-weight: normal;
}

/* ── Canvas wrapper ──────────────────────────────────────── */

.skill-tree-wrapper {
  position: relative;
  width: 100%;
  height: calc(100vh - 200px);
  min-height: 420px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

#skill-tree-container {
  width: 100%;
  height: 100%;
}

/* SVG text inherits page text colour */
#skill-tree-container svg {
  color: var(--text-color);
}

/* ── Node interactions ───────────────────────────────────── */

.skill-node-inner {
  transform-box: fill-box;
  transform-origin: center;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.skill-node-outer:hover .skill-node-inner {
  transform: scale(1.15);
}

/* ── Controls ────────────────────────────────────────────── */

.skill-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.35rem 0;
  flex-wrap: wrap;
}

.skill-reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.7rem;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-color);
  cursor: pointer;
  transition: background 0.15s;
}
.skill-reset-btn:hover {
  background: var(--hover-bg);
}

.skill-hint {
  font-size: 0.72rem;
  opacity: 0.38;
  margin-left: auto;
  font-weight: normal;
}

/* ── Legend ──────────────────────────────────────────────── */

.skill-legend {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.75rem;
  font-weight: normal;
}
.skill-legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  opacity: 0.65;
}
.skill-legend-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  flex-shrink: 0;
}
.skill-legend-dot.know {
  background: #a78bfa;
  opacity: 0.88;
}
.skill-legend-dot.learning {
  background: rgba(167,139,250,0.4);
  border: 1.5px solid #a78bfa;
}
.skill-legend-dot.want {
  background: transparent;
  border: 1.5px solid rgba(167,139,250,0.45);
}

/* ── Tooltip ─────────────────────────────────────────────── */

#skill-tooltip {
  position: fixed;
  display: none;
  z-index: 300;
  min-width: 200px;
  max-width: 280px;
  padding: 0.6rem 0.7rem;
  border-radius: 10px;
  background-color: var(--background-color);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 24px rgba(0,0,0,0.18);
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
}
#skill-tooltip.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.skill-tt-project {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.35rem 0;
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid var(--border-color);
}
.skill-tt-project:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.skill-tt-project:first-child {
  padding-top: 0;
}

.skill-tt-name {
  font-size: 0.82rem;
  font-weight: 700;
}
a.skill-tt-project:hover .skill-tt-name {
  text-decoration: underline;
}

.skill-tt-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}
.skill-tt-tag {
  font-size: 0.64rem;
  font-weight: 600;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  background: var(--badge);
  color: var(--text-color);
  opacity: 0.75;
}

/* ── Error state ─────────────────────────────────────────── */

.skill-tree-error {
  padding: 2rem;
  text-align: center;
  opacity: 0.45;
  font-size: 0.85rem;
}