:root {
  --bg: #0f172a;
  --bg-2: #1e293b;
  --bg-3: #334155;
  --fg: #e2e8f0;
  --fg-dim: #94a3b8;
  --border: #475569;
  --accent: #38bdf8;
  --danger: #ef4444;
  --hex-fill: #cbd5e1;
  --hex-stroke: #1e293b;
  --hex-text: #0f172a;
  --hex-selected-stroke: #facc15;
}

* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.brand h1 {
  margin: 0;
  font-size: 20px;
}
.brand .subtitle {
  color: var(--fg-dim);
  font-size: 13px;
}
.topbar-actions {
  display: flex;
  gap: 16px;
  align-items: center;
}
.topbar-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
}
.topbar-link:hover {
  background: var(--bg-3);
}
.select-group {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--fg-dim);
  gap: 2px;
}
.select-group select {
  background: var(--bg-3);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 14px;
}

.zoom-group {
  display: inline-flex;
  gap: 2px;
  align-items: stretch;
}
.zoom-group button {
  padding: 4px 10px;
  background: var(--bg-3);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  min-width: 32px;
  line-height: 1.2;
}
.zoom-group button:hover {
  background: #475569;
}
#zoom-reset {
  min-width: 56px;
  font-variant-numeric: tabular-nums;
}

.layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 0;
  height: calc(100vh - 57px);
}

.map-wrap {
  position: relative;
  overflow: auto;
  padding: 16px;
  background:
    radial-gradient(circle at 20% 30%, rgba(56, 189, 248, 0.05), transparent 40%),
    var(--bg);
}
.hint {
  position: sticky;
  top: 0;
  background: var(--bg-2);
  color: var(--fg-dim);
  padding: 6px 12px;
  font-size: 12px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 8px;
  border: 1px solid var(--border);
  z-index: 1;
}
#map-container {
  display: block;
  margin: 0 auto;
  /* Explicit width/height are set by the zoomer. */
}
#map-container svg {
  display: block;
  width: 100%;
  height: 100%;
  user-select: none;
}

.hex {
  cursor: pointer;
  transition: filter 120ms ease, stroke-width 120ms ease;
}
.hex:hover {
  filter: brightness(1.15);
}
.hex polygon {
  stroke: #0f172a;
  stroke-width: 2;
  stroke-linejoin: round;
}
.hex.level-6 polygon,
.hex.level-7 polygon {
  stroke-width: 3;
}
.hex.assigned polygon {
  stroke: #111;
  stroke-width: 2.5;
}
.hex text {
  pointer-events: none;
  fill: var(--hex-text);
  font-weight: 500;
  text-anchor: middle;
  dominant-baseline: middle;
}
.hex .pct {
  font-size: 13px;
  font-weight: 700;
}
.hex .buff {
  font-size: 12px;
}
.hex .level-badge {
  fill: #2563eb;
}
.hex .level-badge-text {
  font-size: 13px;
  font-weight: 700;
  fill: white;
}
.hex.has-light-bg text {
  fill: #0f172a;
}
.hex.has-dark-bg text {
  fill: #f8fafc;
}
.hex.has-dark-bg .level-badge {
  fill: #fbbf24;
}
.hex.has-dark-bg .level-badge-text {
  fill: #1f2937;
}

.sidebar {
  background: var(--bg-2);
  border-left: 1px solid var(--border);
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.sidebar h2 {
  margin: 0;
  font-size: 16px;
}
.alliance-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}
.alliance-form input[type="text"] {
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 6px 8px;
  border-radius: 4px;
}

button {
  background: var(--bg-3);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
}
button:hover {
  background: #475569;
}
button.danger {
  background: #7f1d1d;
  border-color: #991b1b;
}
button.danger:hover {
  background: #991b1b;
}

.alliance-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.alliance-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-3);
}
.alliance-list li.active {
  outline: 2px solid var(--accent);
}
.alliance-list .swatch {
  width: 20px;
  height: 20px;
  border-radius: 3px;
  border: 1px solid rgba(0, 0, 0, 0.3);
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
}

.color-popover {
  position: fixed;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px;
  display: grid;
  grid-template-columns: repeat(6, 24px);
  gap: 4px;
  z-index: 1000;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.5);
}
.color-popover .palette-swatch {
  width: 24px;
  height: 24px;
  padding: 0;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  cursor: pointer;
  transition: transform 80ms ease;
}
.color-popover .palette-swatch:hover {
  transform: scale(1.1);
}
.color-popover .palette-swatch.active {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.color-popover .palette-custom {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--fg-dim);
  font-size: 12px;
  padding-top: 4px;
  border-top: 1px solid var(--border);
  margin-top: 2px;
}
.color-popover .palette-custom input[type="color"] {
  flex: 1;
  height: 22px;
  padding: 0;
  border: 1px solid var(--border);
  background: var(--bg-3);
  border-radius: 3px;
  cursor: pointer;
}
.alliance-list .name {
  flex: 1;
  font-size: 14px;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.alliance-list .count {
  color: var(--fg-dim);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.alliance-list button {
  padding: 2px 6px;
  font-size: 12px;
}
.alliance-list .empty {
  color: var(--fg-dim);
  font-style: italic;
  padding: 12px;
  text-align: center;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

dialog {
  border: 1px solid var(--border);
  background: var(--bg-2);
  color: var(--fg);
  border-radius: 8px;
  padding: 20px;
  max-width: 480px;
}
dialog::backdrop {
  background: rgba(0, 0, 0, 0.6);
}
dialog h3 {
  margin-top: 0;
}
.share-row {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}
.share-row input {
  flex: 1;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 6px 8px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 13px;
}

@media (max-width: 880px) {
  .layout {
    grid-template-columns: 1fr;
    height: auto;
  }
  .sidebar {
    border-left: none;
    border-top: 1px solid var(--border);
  }
}