:root {
  --bg: #1a1d1a;
  --bg-elevated: #232823;
  --bg-elevated-2: #2a302a;
  --text: #e8ebe5;
  --text-dim: #a8b0a3;
  --accent: #7cb87c;
  --accent-soft: #b8d4a8;
  --border: #3a423a;
  --shadow: rgba(0, 0, 0, 0.55);
  --tooltip-width: 520px;
  --tree-width: 270px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  min-height: 100vh;
  overflow: hidden;
}

/* ── Stage / Mindmap ──────────────────────────────────────────────────────── */
.stage {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  height: 100vh;
  overflow: hidden;
}

.mindmap,
.mindmap__lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.mindmap__lines { pointer-events: none; z-index: 1; }
.mindmap { z-index: 2; }

.mindmap__line {
  stroke: var(--border);
  stroke-width: 1.5;
  transition: stroke 160ms ease, stroke-width 160ms ease;
}
.mindmap__line.is-lit {
  stroke: var(--accent);
  stroke-width: 2;
}

/* Knoten der Mindmap */
.mindmap__node {
  position: absolute;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  border-bottom: none;
  border-radius: 999px;
  padding: 0.5rem 1.05rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  cursor: help;
  user-select: none;
  transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease, box-shadow 140ms ease;
}
.mindmap__node:hover,
.mindmap__node.is-active {
  background: var(--bg-elevated-2);
  color: var(--accent);
}

.mindmap__node--root {
  font-size: clamp(1.5rem, 3.2vw, 2.6rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--text);
  padding: 0.7rem 1.6rem;
  border-color: #4a564a;
  background: linear-gradient(180deg, #2a302a, #232823);
  box-shadow: 0 6px 26px rgba(0,0,0,0.45);
}
.mindmap__node--root .mindmap__node-em { font-style: italic; }

.mindmap__node--secondary {
  font-size: 1.18rem;
  font-weight: 500;
  color: var(--accent-soft);
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(124,184,124,0.15), 0 6px 18px rgba(0,0,0,0.4);
}

.mindmap__node--tertiary {
  font-size: 1.02rem;
  font-weight: 400;
  color: var(--accent-soft);
}

.stage__hint {
  position: absolute;
  bottom: 14px;
  left: 0;
  right: 0;
  text-align: center;
  margin: 0;
  font-size: 0.78rem;
  color: var(--text-dim);
  pointer-events: none;
  z-index: 2;
}

/* ── Sidebar-Baum ─────────────────────────────────────────────────────────── */
.tree {
  position: relative;
  flex: 0 0 auto;
  width: var(--tree-width);
  height: 100vh;
  background: #14171466;
  border-right: 1px solid var(--border);
  backdrop-filter: blur(2px);
  transition: width 220ms ease;
  z-index: 50;
}
.tree.is-collapsed { width: 0; border-right-color: transparent; }

.tree__toggle {
  position: absolute;
  top: 14px;
  right: -16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--accent-soft);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 60;
  box-shadow: 0 2px 8px var(--shadow);
  transition: transform 220ms ease, background-color 140ms ease;
}
.tree__toggle:hover { background: var(--bg-elevated-2); }
.tree.is-collapsed .tree__toggle { transform: rotate(180deg); }

.tree__inner {
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1.1rem 0.6rem 2rem 1rem;
  opacity: 1;
  transition: opacity 160ms ease;
}
.tree.is-collapsed .tree__inner { opacity: 0; pointer-events: none; }

.tree__heading {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
}
.tree__sub {
  margin: 0.15rem 0 0.9rem;
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.tree__root, .tree__children {
  list-style: none;
  margin: 0;
  padding: 0;
}
.tree__children {
  margin-left: 0.55rem;
  padding-left: 0.55rem;
  border-left: 1px solid var(--border);
  display: none;
}
.tree__node.is-open > .tree__children { display: block; }

.tree__row {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  padding: 1px 0;
}

.tree__caret {
  flex: 0 0 auto;
  width: 1.1rem;
  text-align: center;
  font-size: 0.7rem;
  color: var(--text-dim);
  cursor: pointer;
  user-select: none;
  transition: color 120ms ease;
}
.tree__caret:hover { color: var(--accent); }
.tree__caret--empty { cursor: default; opacity: 0.35; }

.tree__label {
  flex: 1 1 auto;
  font-size: 0.86rem;
  color: var(--accent-soft);
  cursor: pointer;
  padding: 0.12rem 0.35rem;
  border-radius: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background-color 120ms ease, color 120ms ease;
}
.tree__label:hover { background: rgba(124,184,124,0.1); color: var(--accent); }
.tree__label.is-pinned { color: var(--accent); background: rgba(124,184,124,0.14); }

/* Alle 7 Startknoten gleichrangig */
.tree__node--top > .tree__row > .tree__label {
  font-weight: 600;
  color: var(--text);
}
/* Cannabis sativa: lateinischer Name bleibt kursiv */
.tree__node--top > .tree__row > .tree__label[data-slug="cannabis"] {
  font-style: italic;
}

/* ── Hoverbare Begriffe (Inline, in Tooltips) ─────────────────────────────── */
.term {
  color: var(--accent-soft);
  border-bottom: 1px dashed var(--accent);
  cursor: help;
  transition: color 120ms ease, background-color 120ms ease;
}
.term:hover,
.term.is-active {
  color: var(--accent);
  background-color: rgba(124, 184, 124, 0.08);
}

/* ── Tooltip-Karten ───────────────────────────────────────────────────────── */
.tooltip {
  position: absolute;
  width: var(--tooltip-width);
  max-width: calc(100vw - 2rem);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 12px 32px var(--shadow);
  padding: 1.1rem 1.25rem 1.2rem;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--text);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 120ms ease, transform 120ms ease;
  pointer-events: auto;
  z-index: 100;
}

.tooltip.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.tooltip[data-depth="2"] { background: var(--bg-elevated-2); }
.tooltip[data-depth="3"] { background: #313831; }
.tooltip[data-depth="4"] { background: #383f37; }
.tooltip[data-depth="5"] { background: #3f4640; }
.tooltip[data-depth="6"] { background: #454d44; }

.tooltip__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.tooltip__title {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--accent-soft);
  margin: 0;
}

.tooltip__kategorie {
  flex: 0 0 auto;
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tooltip__body {
  max-height: 60vh;
  overflow-y: auto;
}

.tooltip__body p { margin: 0 0 0.5rem; }
.tooltip__body p:last-child { margin-bottom: 0; }

.tooltip__missing {
  color: var(--text-dim);
  font-style: italic;
}

/* X-Button (nur bei Pinned-Tooltips) */
.tooltip__close {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.72rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  z-index: 2;
  transition: background-color 120ms ease, color 120ms ease;
}
.tooltip__close:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text);
}

/* Platz für den X-Button im Header */
.tooltip.is-pinned .tooltip__header {
  padding-right: 1.4rem;
}

/* Drag-Cursor: Tooltip ist greifbar, interaktive Elemente nicht */
.tooltip {
  cursor: grab;
}
.tooltip.is-dragging {
  cursor: grabbing;
  user-select: none;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.7);
}
.tooltip .term,
.tooltip .tooltip__close {
  cursor: help;
}
.tooltip .tooltip__close {
  cursor: pointer;
}

/* Ladebalken — Anker-Countdown (1 Sekunde) */
.tooltip__progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--accent);
  border-radius: 8px 0 0 0;
  animation: progress-fill 1s linear forwards;
  pointer-events: none;
  transition: opacity 250ms ease;
}

@keyframes progress-fill {
  from { width: 0%; }
  to   { width: 100%; }
}

.tooltip.is-anchored .tooltip__progress { opacity: 0; }
.tooltip.is-pinned .tooltip__progress { display: none; }

/* Konnektor-Pfeil */
.tooltip::before {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  background: inherit;
  border-left: 1px solid var(--border);
  border-top: 1px solid var(--border);
  top: -6px;
  left: var(--arrow-x, 24px);
  transform: rotate(45deg);
}

.tooltip[data-flip-y="true"]::before {
  top: auto;
  bottom: -6px;
  transform: rotate(225deg);
}

/* ── Scrollbars ───────────────────────────────────────────────────────────── */
.tree__inner::-webkit-scrollbar,
.tooltip__body::-webkit-scrollbar { width: 8px; }
.tree__inner::-webkit-scrollbar-thumb,
.tooltip__body::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

@media (max-width: 720px) {
  :root { --tree-width: 230px; }
  .tree { position: absolute; left: 0; top: 0; }
}