:root {
  --bg: #17130e;
  --bg2: #1f1913;
  --panel: #251e16;
  --panel-edge: #3a2f22;
  --text: #ece3d4;
  --text-dim: #a5977f;
  --accent: #c8935a;
  --accent-hi: #e0b078;
  --danger: #b05543;
  --radius: 10px;
  font-size: 15px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100%;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1.2rem;
  background: linear-gradient(180deg, var(--bg2), var(--bg));
  border-bottom: 1px solid var(--panel-edge);
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 0.7rem; }
.brand h1 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  font-family: Georgia, "Times New Roman", serif;
}
.brand .tagline {
  margin: 0;
  font-size: 0.75rem;
  color: var(--text-dim);
  font-style: italic;
}
.topbar-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

/* ---------- buttons & inputs ---------- */
button {
  font: inherit;
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius);
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  background: var(--panel);
  color: var(--text);
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
}
button:hover { border-color: var(--accent); }
button:active { transform: translateY(1px); }
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #241609;
  font-weight: 600;
}
button.primary:hover { background: var(--accent-hi); }
button.ghost { background: transparent; }
button.danger { color: #e8a091; border-color: #5c3128; background: transparent; }
button.danger:hover { border-color: var(--danger); background: rgba(176, 85, 67, 0.12); }

input[type="text"], input[type="date"], select {
  font: inherit;
  width: 100%;
  padding: 0.42rem 0.55rem;
  border-radius: 7px;
  border: 1px solid var(--panel-edge);
  background: var(--bg);
  color: var(--text);
  color-scheme: dark;
}
input:focus, select:focus, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
input[type="range"] { width: 100%; accent-color: var(--accent); }

label { display: block; margin-bottom: 0.65rem; font-size: 0.85rem; color: var(--text-dim); }
label input, label select { margin-top: 0.25rem; }
label.check { display: flex; align-items: center; gap: 0.5rem; }
label.check input { width: auto; margin: 0; }

.hint { font-size: 0.78rem; color: var(--text-dim); margin: 0 0 0.6rem; line-height: 1.45; }
.row { display: flex; gap: 0.5rem; margin-bottom: 0.55rem; }
.row > * { flex: 1; }

/* ---------- layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 330px 1fr;
  gap: 1.1rem;
  padding: 1.1rem;
  max-width: 1500px;
  margin: 0 auto;
}
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { order: 2; }
}

/* ---------- panels ---------- */
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius);
  margin-bottom: 0.9rem;
  overflow: hidden;
}
.panel summary {
  cursor: pointer;
  padding: 0.65rem 0.9rem;
  font-weight: 600;
  user-select: none;
  list-style: none;
}
.panel summary::-webkit-details-marker { display: none; }
.panel summary::after {
  content: "▾";
  float: right;
  color: var(--text-dim);
  transition: transform 0.15s;
}
.panel:not([open]) summary::after { transform: rotate(-90deg); }
.panel-body { padding: 0.4rem 0.9rem 0.9rem; }

.teaser { padding: 0.9rem; background: linear-gradient(150deg, #2b2115, #241c12); }
.teaser h3 { margin: 0 0 0.4rem; font-size: 0.95rem; }
.teaser p { margin: 0; font-size: 0.8rem; color: var(--text-dim); line-height: 1.5; }
.teaser .order-btn { width: 100%; margin-top: 0.6rem; }
.teaser .order-btn[hidden] { display: none; }
.teaser .order-soon { margin-top: 0.5rem; }

/* ---------- events ---------- */
.event-list { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 0.8rem; }
.event-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg);
  border: 1px solid var(--panel-edge);
  border-radius: 7px;
  padding: 0.4rem 0.55rem;
  font-size: 0.82rem;
}
.event-item .ev-icon { font-size: 1rem; }
.event-item .ev-main { flex: 1; min-width: 0; }
.event-item .ev-title {
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.event-item .ev-date { color: var(--text-dim); font-size: 0.72rem; }
.event-item .ev-impact {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  min-width: 2em;
  text-align: right;
}
.event-item .ev-impact.pos { color: #9dc98a; }
.event-item .ev-impact.neg { color: #d98a76; }
.event-item .ev-del {
  border: none; background: none; color: var(--text-dim);
  padding: 0.1rem 0.3rem; font-size: 0.9rem;
}
.event-item .ev-del:hover { color: var(--danger); }

.event-add {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  border-top: 1px dashed var(--panel-edge);
  padding-top: 0.7rem;
}
.impact-row { display: flex; align-items: center; gap: 0.55rem; }
.impact-row .impact-label { font-size: 0.8rem; color: var(--text-dim); }
.impact-row output {
  min-width: 2.2em; text-align: right;
  font-variant-numeric: tabular-nums; font-weight: 700;
}

/* ---------- stage ---------- */
.stage {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  gap: 0.8rem;
}

.timeline {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  width: min(100%, 760px);
  padding: 0.55rem 0.9rem;
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius);
}
.timeline[hidden] { display: none; }
.timeline input[type="range"] { flex: 1; }
.timeline output {
  min-width: 8em;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
  color: var(--text-dim);
  white-space: nowrap;
}
.timeline .play { min-width: 2.6rem; padding: 0.35rem 0.5rem; }
.canvas-wrap {
  position: relative;
  width: min(100%, 760px);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0,0,0,0.45);
}
#treeCanvas {
  display: block;
  width: 100%;
  height: auto;
}
.tooltip {
  position: absolute;
  pointer-events: none;
  background: rgba(20, 14, 8, 0.92);
  color: #f0e6d6;
  border: 1px solid #5c452c;
  border-radius: 8px;
  padding: 0.45rem 0.65rem;
  font-size: 0.78rem;
  line-height: 1.45;
  max-width: 240px;
  transform: translate(-50%, calc(-100% - 12px));
  z-index: 5;
  box-shadow: 0 4px 14px rgba(0,0,0,0.4);
}
.tooltip .tt-year { font-weight: 700; color: var(--accent-hi); }
.tooltip ul { margin: 0.2rem 0 0; padding-left: 1rem; }

.empty-msg[hidden] { display: none; }
.empty-msg {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: #6b5a41;
  font-family: Georgia, serif;
  font-size: 1.05rem;
  padding: 2rem;
}
.empty-msg p:first-child { font-size: 3rem; margin: 0 0 0.5rem; }
.empty-msg p { margin: 0; }

/* ---------- footer ---------- */
.foot {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.72rem;
  padding: 0.6rem 1rem 1.2rem;
}
.foot p { margin: 0; }

/* ---------- print ---------- */
@media print {
  body { background: #fff; }
  .topbar, .sidebar, .foot, .tooltip, .timeline { display: none !important; }
  .layout { display: block; padding: 0; }
  .canvas-wrap { width: 100%; box-shadow: none; border-radius: 0; }
}