/* DESIGN.md tokens — atlas (浅色) default + dark */
[data-theme="atlas"],
:root {
  --bg-void: #f4f0e6;
  --bg-canvas: #ede8dc;
  --bg-panel: #f8f5ec;
  --bg-panel-2: #ffffff;
  --bg-inset: #e8e2d4;
  --bg-glass: rgba(248, 245, 236, 0.9);
  --border-subtle: #d9d0bc;
  --border-default: #c9c0ae;
  --border-strong: #a89878;
  --text-primary: #1a2430;
  --text-secondary: #4a5568;
  --text-muted: #7a8699;
  --text-inverse: #f8f5ec;
  --accent-amber: #b8860b;
  --accent-amber-2: #d4a017;
  --accent-cyan: #0e7490;
  --accent-flood: #c2414b;
  --accent-ok: #0f766e;
  --focus-ring: #0284c7;
  --grid-line: #d9d0bc;
  --shadow: 0 8px 24px rgba(60, 50, 30, 0.12);
}

[data-theme="dark"] {
  --bg-void: #070b12;
  --bg-canvas: #0b1220;
  --bg-panel: #111a2b;
  --bg-panel-2: #162033;
  --bg-inset: #0d1524;
  --bg-glass: rgba(17, 26, 43, 0.82);
  --border-subtle: #1e2a40;
  --border-default: #2a3a55;
  --border-strong: #3d5478;
  --text-primary: #e8eef7;
  --text-secondary: #9aabc2;
  --text-muted: #6b7f99;
  --text-inverse: #0b1220;
  --accent-amber: #e8b84a;
  --accent-amber-2: #f5d07a;
  --accent-cyan: #3ec6e0;
  --accent-flood: #f07178;
  --accent-ok: #3ddc97;
  --focus-ring: #7dd3fc;
  --grid-line: #1a2438;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: "Inter", "Segoe UI", "PingFang SC", "Noto Sans SC", "Microsoft YaHei",
    system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.55;
}

button,
input {
  font: inherit;
  color: inherit;
}

.app {
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  height: 100%;
  min-height: 0;
}

/* —— top —— */
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-subtle);
  min-height: 48px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.title-block {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.subtitle {
  font-size: 11px;
  white-space: nowrap;
}

.layer-menu {
  position: relative;
}

.layer-pop {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  z-index: 20;
  min-width: 148px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--bg-panel-2);
  border: 1px solid var(--border-default);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.layer-pop[hidden] {
  display: none !important;
}

.layer-pop label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}

.btn-icon {
  min-width: 36px;
}

.btn-ghost {
  background: transparent;
}

.btn-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--text-primary);
}

.btn-link:hover {
  color: var(--accent-cyan);
  text-decoration: none;
}

.stats.is-collapsed {
  display: none;
}

.body:has(.stats.is-collapsed) {
  grid-template-columns: 1fr;
}

.presets.is-collapsed {
  display: none;
}

.dock.presets-collapsed {
  padding-bottom: 10px;
}

.btn-collapse {
  margin-left: auto;
}

.chip {
  font-size: 12px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(232, 184, 74, 0.12);
  color: var(--accent-amber);
  border: 1px solid var(--accent-amber);
  white-space: nowrap;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.src {
  font-size: 11px;
}

.btn {
  background: var(--bg-panel-2);
  border: 1px solid var(--border-default);
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}

.btn:hover {
  border-color: var(--border-strong);
  background: var(--bg-inset);
}

.btn:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.btn.active {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

/* —— body —— */
.body {
  display: grid;
  grid-template-columns: 1fr 280px;
  min-height: 0;
}

.map-wrap {
  position: relative;
  min-width: 0;
  min-height: 0;
  background: var(--bg-canvas);
  overflow: hidden;
}

#map {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
}

#map:active {
  cursor: grabbing;
}

.hud {
  position: absolute;
  z-index: 5;
  pointer-events: none;
  max-width: 220px;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  font-size: 12px;
}

.hud-coord {
  color: var(--text-secondary);
  font-family: Consolas, "JetBrains Mono", monospace;
  font-size: 11px;
}

.hud-kind {
  font-weight: 600;
  margin-top: 2px;
}

.hud-kind.gold {
  color: var(--accent-amber);
}

.hud-kind.flood {
  color: var(--accent-flood);
}

.hud-val {
  color: var(--text-primary);
  font-family: Consolas, "JetBrains Mono", monospace;
}

.zoom-badge {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 4;
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 6px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  backdrop-filter: blur(6px);
}

.err {
  position: absolute;
  inset: 24px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  background: var(--bg-glass);
  border: 1px solid var(--accent-flood);
  border-radius: 12px;
  color: var(--accent-flood);
  backdrop-filter: blur(8px);
}

.err[hidden],
.hud[hidden],
.zoom-badge[hidden] {
  display: none !important;
}

.minimap {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 4;
  width: 140px;
  height: 70px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-default);
  background: var(--bg-panel);
  box-shadow: var(--shadow);
  cursor: crosshair;
}

.minimap canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.legend {
  position: absolute;
  left: 12px;
  bottom: 12px;
  z-index: 4;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  font-size: 11px;
  color: var(--text-secondary);
  backdrop-filter: blur(6px);
}

.lg-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 3px 0;
}

.sw {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.sw.gold {
  background: #e8b84a;
}

.sw.flood {
  background: #5b8fa8;
}

.sw.land {
  background: #3d8f5c;
}

.sw.sea {
  background: #1287a8;
}

.sw.ghost {
  background: rgba(255, 255, 255, 0.45);
}

/* —— stats —— */
.stats {
  background: var(--bg-panel);
  border-left: 1px solid var(--border-subtle);
  padding: 16px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.stats h2 {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  text-transform: none;
}

.metric {
  font-family: Consolas, "JetBrains Mono", monospace;
  font-size: 28px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.delta {
  margin-top: 6px;
  font-size: 12px;
}

.delta.up {
  color: var(--accent-amber);
}

.delta.down {
  color: var(--accent-flood);
}

.desc {
  margin: 0;
  color: var(--text-secondary);
  font-size: 13px;
}

.ice-box {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ice-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  cursor: pointer;
}

.ice-sum {
  margin-top: 4px;
  font-family: Consolas, monospace;
  font-size: 12px;
}

.anno-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.anno-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 10px;
  border-left: 2px solid var(--accent-amber);
}

.anno-list strong {
  font-size: 13px;
}

.anno-list span {
  font-size: 12px;
  color: var(--text-secondary);
}

/* —— dock —— */
.dock {
  background: var(--bg-panel);
  border-top: 1px solid var(--border-subtle);
  padding: 12px 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sl-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.sl-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
}

.sl-read {
  font-family: Consolas, "JetBrains Mono", monospace;
  font-size: 22px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--accent-cyan);
}

.sl-note {
  font-size: 12px;
  color: var(--text-secondary);
}

.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 32px;
  background: transparent;
  margin: 0;
  cursor: pointer;
}

.slider:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 4px;
}

.slider::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    var(--border-default) 0%,
    var(--border-default) var(--fill, 65%),
    var(--accent-cyan) var(--fill, 65%),
    var(--accent-cyan) 100%
  );
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin-top: -7px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: 2px solid var(--bg-void);
  box-shadow: 0 0 0 1px var(--border-strong);
}

.slider::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: var(--border-default);
}

.slider::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--accent-cyan);
}

.slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-cyan);
  border: 2px solid var(--bg-void);
}

.ticks {
  position: relative;
  height: 22px;
  margin-top: -4px;
}

.tick {
  position: absolute;
  top: 0;
  width: 1px;
  height: 5px;
  background: var(--border-default);
  transform: translateX(-50%);
}

.tick.major {
  height: 8px;
  background: var(--border-strong);
}

.tick-label {
  position: absolute;
  top: 9px;
  transform: translateX(-50%);
  font-size: 10px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.pin {
  position: absolute;
  top: -2px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  padding: 0;
  transform: translateX(-50%);
  cursor: pointer;
  z-index: 2;
}

.pin.past {
  background: var(--accent-cyan);
}

.pin.zero {
  background: #fff;
  width: 10px;
  height: 10px;
}

.pin.rise {
  background: var(--accent-amber);
}

.pin.flood {
  background: var(--accent-flood);
}

.pin:hover {
  transform: translateX(-50%) scale(1.25);
}

.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.preset {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border-default);
  background: var(--bg-panel-2);
  cursor: pointer;
  min-width: 108px;
  transition: border-color 0.12s ease;
}

.preset:hover {
  border-color: var(--border-strong);
}

.preset:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.p-name {
  font-size: 13px;
  font-weight: 600;
}

.p-val {
  font-size: 11px;
  color: var(--text-muted);
  font-family: Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

/* —— footer —— */
.foot {
  padding: 8px 16px 12px;
  font-size: 11px;
  line-height: 1.45;
  background: var(--bg-void);
  border-top: 1px solid var(--border-subtle);
}

.muted {
  color: var(--text-muted);
}

/* —— responsive —— */
@media (max-width: 960px) {
  .body {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
  }

  .stats {
    border-left: none;
    border-top: 1px solid var(--border-subtle);
    max-height: 34vh;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 16px;
  }

  .stats section {
    flex: 1 1 180px;
  }

  .minimap {
    width: 100px;
    height: 50px;
  }
}

@media (max-width: 600px) {
  .title {
    font-size: 15px;
  }

  .src {
    display: none;
  }

  .legend {
    display: none;
  }

  .preset {
    min-width: 88px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}

/* —— experimental range + help modal —— */
.exp-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 12px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
}

.exp-toggle input {
  accent-color: var(--accent-flood);
}

.exp-warn {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--accent-flood);
}

.modal[hidden] {
  display: none !important;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.modal-panel {
  position: relative;
  z-index: 1;
  width: min(640px, 100%);
  max-height: min(80vh, 720px);
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-head h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.modal-body {
  padding: 16px 20px 20px;
  overflow: auto;
}

.modal-body section + section {
  margin-top: 18px;
}

.modal-body h3 {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-cyan);
}

.modal-body p,
.modal-body li {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.55;
}

.modal-body p {
  margin: 0 0 8px;
}

.modal-body ul {
  margin: 0;
  padding-left: 18px;
}

.modal-body li + li {
  margin-top: 4px;
}

.modal-body kbd {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid var(--border-default);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--bg-inset);
  font-family: Consolas, monospace;
  font-size: 11px;
  color: var(--text-primary);
}

.sl-row {
  flex-wrap: wrap;
}