:root {
  --bg: #0a0a0b;
  --bg-panel: #141416;
  --bg-panel-2: #1b1b1e;
  --border: #2b2b2f;
  --border-light: #444448;
  --accent: #9c2b2b;
  --accent-bright: #d94c4c;
  --text: #e4e4e6;
  --text-dim: #a0a0a6;
  --text-faint: #63636a;
  --green: #4c8c52;
  --node-gap: 18px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Trebuchet MS", Arial, sans-serif;
  height: 100%;
}

body {
  background-image:
    radial-gradient(circle at 15% 10%, rgba(156,43,43,0.05), transparent 40%),
    radial-gradient(circle at 85% 90%, rgba(156,43,43,0.04), transparent 40%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* ---------- Top bar ---------- */
header.topbar {
  background: linear-gradient(180deg, #131315, #0a0a0b);
  border-bottom: 2px solid var(--border-light);
  padding: 10px 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.6);
}

header.topbar h1 {
  font-size: 18px;
  margin: 0;
  color: var(--accent-bright);
  letter-spacing: 0.5px;
  white-space: nowrap;
  text-shadow: 0 0 8px rgba(217,76,76,0.25);
}

.control {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.control label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-faint);
}

select, input[type="number"], input[type="text"] {
  background: var(--bg-panel-2);
  border: 1px solid var(--border-light);
  color: var(--text);
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 13px;
}

select:focus, input:focus {
  outline: 1px solid var(--accent-bright);
}

.points-display {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 4px 12px;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
}

.points-display .label {
  font-size: 10px;
  text-transform: uppercase;
  color: var(--text-faint);
}

.points-display .value {
  font-size: 16px;
  font-weight: 600;
  color: var(--accent-bright);
}

.points-display .value.over {
  color: #e6503f;
}

.topbar-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
  flex-wrap: wrap;
}

.btn {
  background: var(--bg-panel-2);
  border: 1px solid var(--border-light);
  color: var(--text);
  padding: 7px 12px;
  border-radius: 4px;
  font-size: 12px;
  transition: background 0.15s, border-color 0.15s;
}

.btn:hover { background: #222225; border-color: var(--accent-bright); }

a.btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.btn.primary {
  background: linear-gradient(180deg, #3a1c1c, #241212);
  border-color: var(--accent);
  color: var(--accent-bright);
}

.btn.primary:hover { background: linear-gradient(180deg, #4a2222, #2e1616); }

.btn.danger:hover { border-color: #b23a3a; color: #e08b78; }

.btn.toggle.active {
  background: var(--accent);
  color: #f4dcdc;
  border-color: var(--accent-bright);
  font-weight: 600;
}

/* ---------- Disclaimer banner ---------- */
.disclaimer-banner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 18px;
  background: #241a10;
  border-bottom: 1px solid #4a3a20;
  color: #d8bd8a;
  font-size: 12px;
  line-height: 1.5;
}

.disclaimer-banner a {
  color: #f0c869;
  text-decoration: underline;
}

.disclaimer-banner span { flex: 1; }

.disclaimer-banner button {
  background: transparent;
  border: none;
  color: #d8bd8a;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}

.disclaimer-banner button:hover { color: #f0c869; }

/* ---------- Tabs ---------- */
nav.tabs {
  display: flex;
  gap: 2px;
  padding: 0 18px;
  background: #0f0f11;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

nav.tabs button {
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 10px 16px;
  font-size: 13px;
  border-bottom: 3px solid transparent;
  white-space: nowrap;
}

nav.tabs button:hover { color: var(--text); }

nav.tabs button.active {
  color: var(--accent-bright);
  border-bottom-color: var(--accent);
}

nav.tabs button .count {
  color: var(--text-faint);
  font-size: 11px;
  margin-left: 4px;
}


/* ---------- Main layout ---------- */
main {
  flex: 1;
  display: flex;
  overflow: hidden;
}

#treeWrap {
  flex: 1;
  overflow: auto;
  position: relative;
  padding: 30px;
}

.tree-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--node-gap) 22px;
}

.node {
  width: 100%;
  min-height: 92px;
  background: linear-gradient(180deg, var(--bg-panel-2), var(--bg-panel));
  border: 2px solid var(--border-light);
  border-radius: 8px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 4px;
  cursor: pointer;
  position: relative;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.1s;
}

.node:hover {
  border-color: var(--accent-bright);
  transform: translateY(-2px);
}

.node.selected {
  border-color: var(--accent-bright);
  box-shadow: 0 0 0 2px rgba(217,76,76,0.35), 0 0 14px rgba(217,76,76,0.25);
}

.node.maxed {
  border-color: var(--green);
  box-shadow: 0 0 10px rgba(76,140,82,0.35);
}

.node.locked {
  opacity: 0.42;
  filter: grayscale(0.7);
}

.node.auto {
  border-color: #5a5a62;
  background: linear-gradient(180deg, #202024, #17171a);
}

.node.auto .icon {
  color: #b7b7bd;
}

.node .icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #2c2c30, #141416);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-bright);
}

.node .name {
  font-size: 12px;
  font-weight: 600;
  line-height: 1.25;
  color: var(--text);
}

.node .rankbar {
  width: 100%;
  height: 5px;
  background: #080809;
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.node .rankbar .fill {
  height: 100%;
  background: linear-gradient(90deg, #5c2222, var(--accent-bright));
}

.node.maxed .rankbar .fill { background: linear-gradient(90deg, #2e6a35, var(--green)); }

.node .ranktext {
  font-size: 10px;
  color: var(--text-dim);
}

.node .costtag {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--bg);
  border: 1px solid var(--accent);
  color: var(--accent-bright);
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 10px;
}

.node .costtag.auto-tag {
  border-color: #6b6b72;
  color: #c9c9ce;
  font-weight: 700;
  letter-spacing: 0.5px;
}

/* ---------- Side panel ---------- */
#sidePanel {
  width: 320px;
  flex-shrink: 0;
  background: var(--bg-panel);
  border-left: 2px solid var(--border-light);
  padding: 18px;
  overflow-y: auto;
}

#sidePanel h2 {
  color: var(--accent-bright);
  font-size: 17px;
  margin: 0 0 4px;
}

#sidePanel .meta {
  font-size: 11px;
  color: var(--text-faint);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

#sidePanel .desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-dim);
  margin-bottom: 14px;
  white-space: pre-line;
}

.rank-highlight {
  color: var(--accent-bright);
  font-weight: 700;
  background: rgba(217,76,76,0.12);
  padding: 0 3px;
  border-radius: 3px;
}

#sidePanel .req-line {
  font-size: 12px;
  margin-bottom: 6px;
  color: var(--text-dim);
}

#sidePanel .req-line b { color: var(--text); }

#sidePanel .req-line.warn { color: #e08b78; }

.rank-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 14px 0;
}

.rank-controls button {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  background: var(--bg-panel-2);
  color: var(--accent-bright);
  font-size: 17px;
  line-height: 1;
}

.rank-controls button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  border-color: var(--border);
  color: var(--text-faint);
}

.rank-controls button.blocked:not(:disabled) {
  opacity: 0.55;
  border-color: #6b2a2a;
  color: #c98a8a;
}

.rank-controls .current {
  font-size: 15px;
  font-weight: 600;
  min-width: 60px;
  text-align: center;
}

.rank-costs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.rank-costs .pip {
  font-size: 11px;
  padding: 3px 7px;
  border-radius: 4px;
  border: 1px solid var(--border-light);
  color: var(--text-faint);
}

.rank-costs .pip.spent {
  border-color: var(--accent-bright);
  color: var(--accent-bright);
  background: rgba(217,76,76,0.08);
}

#sidePanel .empty {
  color: var(--text-faint);
  font-size: 13px;
  margin-top: 40px;
  text-align: center;
}

/* ---------- Browse all ---------- */
#browseWrap {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}

.browse-controls {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.browse-controls input[type="text"] { width: 240px; }

.browse-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

.browse-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 12px 14px;
}

.browse-card .top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
}

.browse-card .top .name {
  font-weight: 600;
  color: var(--accent-bright);
  font-size: 14px;
}

.browse-card .top .cat {
  font-size: 10px;
  text-transform: uppercase;
  color: var(--text-faint);
  white-space: nowrap;
}

.browse-card .desc {
  font-size: 12.5px;
  color: var(--text-dim);
  line-height: 1.45;
  margin-bottom: 6px;
}

.browse-card .info {
  font-size: 11px;
  color: var(--text-faint);
}

/* ---------- Summary ---------- */
#summaryWrap {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}

.summary-meta {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.summary-meta b { color: var(--accent-bright); }

.summary-section-title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-faint);
  margin: 22px 0 10px;
}

.summary-section-title:first-child { margin-top: 0; }

/* ---------- Export modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  width: min(560px, 90vw);
  max-height: 80vh;
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 20px 22px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.6);
  display: flex;
  flex-direction: column;
}

.modal h2 {
  margin: 0 0 6px;
  color: var(--accent-bright);
  font-size: 16px;
}

.modal-hint {
  margin: 0 0 12px;
  font-size: 12px;
  color: var(--text-faint);
  line-height: 1.4;
}

.modal textarea {
  width: 100%;
  min-height: 260px;
  resize: vertical;
  background: var(--bg-panel-2);
  border: 1px solid var(--border-light);
  color: var(--text-dim);
  font-family: "Consolas", "Courier New", monospace;
  font-size: 12px;
  line-height: 1.5;
  padding: 10px;
  border-radius: 6px;
}

.modal textarea:focus { outline: 1px solid var(--accent-bright); }

.modal-actions {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  justify-content: flex-end;
}

/* ---------- misc ---------- */
.hidden { display: none !important; }

#toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-panel-2);
  border: 1px solid var(--accent);
  color: var(--accent-bright);
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 13px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
  z-index: 50;
}

#toast.show { opacity: 1; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }