/* VibeMap — Obsidian-inspired but reinterpreted. */
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  height: 100%; width: 100%;
  overflow: hidden;
  background: #0b0a14;
  color: #e8e4ff;
  font-family: 'Inter', 'Pretendard', 'Hiragino Sans', 'Noto Sans JP', system-ui, -apple-system, sans-serif;
  font-feature-settings: 'ss01';
  -webkit-font-smoothing: antialiased;
}

:root {
  --bg-0: #0b0a14;
  --bg-1: #141128;
  --bg-2: #1c1838;
  --ink: #e8e4ff;
  --ink-soft: #a39fc4;
  --ink-dim: #6b6790;
  --accent: #c4b5fd;
  --accent-glow: #a78bfa;
  --border: rgba(196, 181, 253, 0.12);
  --panel: rgba(20, 17, 40, 0.85);
}

/* ── stage ──────────────────────────────────────────────── */
#stage {
  position: fixed;
  inset: 0;
  cursor: grab;
  background:
    radial-gradient(circle at 30% 20%, rgba(139, 92, 246, 0.12), transparent 55%),
    radial-gradient(circle at 75% 75%, rgba(96, 165, 250, 0.08), transparent 50%),
    #0b0a14;
}
#stage:active { cursor: grabbing; }

#stage svg {
  width: 100%; height: 100%;
  display: block;
  user-select: none;
}

.edge {
  stroke: rgba(196, 181, 253, 0.12);
  stroke-width: 1;
  fill: none;
  transition: stroke 0.25s, stroke-width 0.25s, opacity 0.25s;
}
.edge.hi {
  stroke: rgba(244, 182, 255, 0.9);
  stroke-width: 1.4;
  filter: drop-shadow(0 0 4px rgba(196, 181, 253, 0.7));
}
.edge.dim { opacity: 0.15; }

.node-g { cursor: pointer; }
.node-halo {
  fill: currentColor;
  opacity: 0;
  transition: opacity 0.3s;
}
.node-g:hover .node-halo,
.node-g.hi .node-halo { opacity: 0.22; }

.node-core {
  fill: currentColor;
  transition: transform 0.2s cubic-bezier(0.4, 1.4, 0.4, 1);
  transform-box: fill-box;
  transform-origin: center;
}
.node-g:hover .node-core,
.node-g.hi .node-core { transform: scale(1.25); }
.node-g.active .node-core { transform: scale(1.4); }
.node-g.dim { opacity: 0.2; }

.node-label {
  fill: var(--ink);
  font-size: 12px;
  font-weight: 500;
  text-anchor: middle;
  pointer-events: none;
  paint-order: stroke;
  stroke: #0b0a14;
  stroke-width: 3px;
  stroke-linejoin: round;
  letter-spacing: -0.01em;
  transition: opacity 0.25s;
}
.node-g[data-size="1"] .node-label { font-size: 15px; font-weight: 600; }
.node-g[data-size="3"] .node-label { font-size: 11px; fill: var(--ink-soft); }

/* ── top bar ────────────────────────────────────────────── */
.topbar {
  position: fixed;
  top: 20px; left: 24px; right: 24px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  pointer-events: none;
  z-index: 20;
  gap: 16px;
  flex-wrap: wrap;
}
.brand {
  pointer-events: auto;
}
.brand-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-title::before {
  content: '';
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #f0abfc, #8b5cf6);
  box-shadow: 0 0 12px rgba(196, 181, 253, 0.8);
}
.brand-sub {
  font-size: 12px;
  color: var(--ink-soft);
  margin: 4px 0 0 18px;
  letter-spacing: 0;
}

.topbar-actions {
  pointer-events: auto;
  display: flex;
  gap: 8px;
  align-items: center;
}

.search-box {
  position: relative;
}
.search-box input {
  background: var(--panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  color: var(--ink);
  padding: 8px 14px 8px 32px;
  border-radius: 8px;
  font-size: 13px;
  font-family: inherit;
  width: 200px;
  outline: none;
  transition: border-color 0.2s, width 0.2s;
}
.search-box input:focus {
  border-color: var(--accent);
  width: 240px;
}
.search-box::before {
  content: '';
  position: absolute;
  left: 11px; top: 50%;
  width: 12px; height: 12px;
  border: 1.5px solid var(--ink-dim);
  border-radius: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}
.search-box::after {
  content: '';
  position: absolute;
  left: 21px; top: calc(50% + 4px);
  width: 5px; height: 1.5px;
  background: var(--ink-dim);
  transform: rotate(45deg);
  pointer-events: none;
}

.lang-switch {
  display: flex;
  background: var(--panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  font-size: 12px;
}
.lang-switch button {
  background: none;
  border: none;
  color: var(--ink-soft);
  padding: 7px 10px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}
.lang-switch button:hover { color: var(--ink); }
.lang-switch button.on {
  background: rgba(167, 139, 250, 0.2);
  color: #f0abfc;
}

.iconbtn {
  width: 34px; height: 34px;
  background: var(--panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--ink-soft);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: color 0.15s, background 0.15s;
}
.iconbtn:hover { color: var(--ink); background: rgba(167, 139, 250, 0.12); }
.iconbtn.on { color: #f0abfc; background: rgba(167, 139, 250, 0.2); }

/* ── left legend / filters ─────────────────────────────── */
.legend {
  position: fixed;
  left: 24px; bottom: 24px;
  background: var(--panel);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  z-index: 20;
  min-width: 200px;
  font-size: 12px;
}
.legend-title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
  margin-bottom: 10px;
  text-transform: uppercase;
}
.legend-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 6px;
  margin: 0 -6px;
  border-radius: 6px;
  cursor: pointer;
  color: var(--ink-soft);
  transition: background 0.15s, color 0.15s;
}
.legend-row:hover { background: rgba(255,255,255,0.04); color: var(--ink); }
.legend-row.off { opacity: 0.4; }
.legend-row.off .legend-dot { background: transparent !important; border: 1.5px solid currentColor; }
.legend-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  box-shadow: 0 0 8px currentColor;
}
.legend-count {
  margin-left: auto;
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: var(--ink-dim);
}

/* ── right panel ───────────────────────────────────────── */
.panel {
  position: fixed;
  top: 0; right: 0;
  height: 100vh;
  width: min(420px, 92vw);
  background: rgba(15, 13, 30, 0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-left: 1px solid var(--border);
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.5, 0.1, 0.2, 1);
  z-index: 30;
  display: flex;
  flex-direction: column;
  box-shadow: -20px 0 60px rgba(0,0,0,0.5);
}
.panel.open { transform: translateX(0); }
.panel-head {
  padding: 22px 26px 18px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.panel-close {
  position: absolute;
  top: 18px; right: 18px;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: none;
  color: var(--ink-soft);
  font-size: 18px;
  cursor: pointer;
  display: grid;
  place-items: center;
  line-height: 1;
  padding: 0;
  transition: background 0.15s, color 0.15s;
}
.panel-close:hover { background: rgba(255,255,255,0.1); color: var(--ink); }
.panel-cat {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.panel-cat-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}
.panel-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0;
  line-height: 1.15;
  color: var(--ink);
}
.panel-body {
  padding: 22px 26px 28px;
  overflow-y: auto;
  flex: 1;
  scrollbar-width: thin;
  scrollbar-color: rgba(196,181,253,0.3) transparent;
}
.panel-body::-webkit-scrollbar { width: 6px; }
.panel-body::-webkit-scrollbar-thumb { background: rgba(196,181,253,0.25); border-radius: 3px; }
.panel-text {
  color: #d8d3f0;
  font-size: 14.5px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: keep-all;
}
.panel-section {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.panel-section-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 10px;
}
.panel-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.link-chip {
  font-size: 12px;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(167, 139, 250, 0.08);
  border: 1px solid rgba(167, 139, 250, 0.2);
  color: var(--ink);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.link-chip:hover {
  background: rgba(167, 139, 250, 0.18);
  border-color: rgba(167, 139, 250, 0.4);
}
.link-chip .link-chip-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 6px currentColor;
}

/* ── intro overlay ─────────────────────────────────────── */
.intro {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, rgba(139, 92, 246, 0.15), transparent 60%), rgba(11, 10, 20, 0.7);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  z-index: 40;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.6s;
}
.intro.gone { opacity: 0; }
.intro-text {
  text-align: center;
  white-space: pre-line;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  animation: fadein 0.9s ease both;
  animation-delay: 0.8s;
  opacity: 0;
}
@keyframes fadein { to { opacity: 1; } }

/* ── footer hint ───────────────────────────────────────── */
.hint {
  position: fixed;
  right: 24px; bottom: 24px;
  font-size: 11px;
  color: var(--ink-dim);
  z-index: 20;
  pointer-events: none;
  font-variant: small-caps;
  letter-spacing: 0.08em;
}

@media (max-width: 640px) {
  .topbar { top: 12px; left: 12px; right: 12px; }
  .brand-sub { display: none; }
  .search-box input { width: 140px; }
  .search-box input:focus { width: 160px; }
  .legend { left: 12px; bottom: 12px; padding: 10px 12px; min-width: 160px; }
  .hint { display: none; }
  .panel { width: 100vw; }
}

/* References section (graphify-sourced) */
.panel-section.refs {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(232, 228, 255, 0.1);
}

.panel-section.refs .panel-section-label {
  opacity: 0.75;
}

.refs-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.refs-item {
  position: relative;
  padding-right: 44px; /* lang badge 공간 */
}

.refs-link {
  color: #e8e4ff;
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  line-height: 1.4;
  border-bottom: 1px solid rgba(232, 228, 255, 0.2);
}

.refs-link:hover {
  border-bottom-color: rgba(232, 228, 255, 0.8);
}

.refs-excerpt {
  margin: 4px 0 0;
  font-size: 12px;
  line-height: 1.5;
  color: rgba(232, 228, 255, 0.55);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.refs-lang {
  position: absolute;
  top: 0;
  right: 0;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 2px 6px;
  border-radius: 3px;
  background: rgba(167, 139, 250, 0.15);
  color: rgba(232, 228, 255, 0.7);
}

.refs-lang-ko { background: rgba(196, 181, 253, 0.15); }
.refs-lang-en { background: rgba(96, 165, 250, 0.15); }
.refs-lang-ja { background: rgba(52, 211, 153, 0.15); }
.refs-lang-other { background: rgba(232, 228, 255, 0.08); }

/* --- Panel body HTML (rendered from nodes.json) ---------------------- */

.panel .panel-text h3 {
  margin: 1.3em 0 .5em;
  font-size: 14px;
  font-weight: 600;
  color: rgba(232, 228, 255, 0.75);
  letter-spacing: 0.02em;
}

.panel .panel-text p {
  margin: 0.8em 0;
}

.panel .panel-text ul {
  margin: 0.6em 0 0.9em;
  padding-left: 1.25em;
}

.panel .panel-text li {
  margin: 0.25em 0;
}

.panel .panel-text strong {
  color: #e8e4ff;
}

.panel .panel-text em {
  color: rgba(232, 228, 255, 0.82);
}

.panel .panel-text code {
  font-family: 'SF Mono', Menlo, Consolas, monospace;
  font-size: 12.5px;
  padding: 1px 5px;
  border-radius: 3px;
  background: rgba(167, 139, 250, 0.12);
  color: #d8d1ff;
}

.panel .panel-text a.wiki-link {
  color: #c4b5fd;
  cursor: pointer;
  text-decoration: none;
  border-bottom: 1px dashed rgba(196, 181, 253, 0.45);
  transition: background 120ms ease, color 120ms ease;
}

.panel .panel-text a.wiki-link:hover {
  background: rgba(167, 139, 250, 0.16);
  color: #e8e4ff;
  border-bottom-color: rgba(232, 228, 255, 0.75);
}

.panel .panel-text-empty {
  opacity: 0.5;
  font-style: italic;
}

.panel .panel-section.refs-curated {
  margin-top: 1.2em;
}

.panel .panel-section.more-reading {
  margin-top: 1.3em;
  opacity: 0.9;
}