:root {
  --hud-bg: rgba(10, 26, 36, 0.52);
  --hud-line: rgba(255, 255, 255, 0.14);
  --ink: #fff8ea;
  --accent: #ffc04a;
  --focus: #9fe3ff;
}

[hidden] { display: none !important; }

* { box-sizing: border-box; }

html,
body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #0f2a36;
  color: var(--ink);
  font-family: system-ui, -apple-system, "PingFang SC", "Noto Sans SC", "Helvetica Neue", sans-serif;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

.stage {
  position: fixed;
  inset: 0;
  overflow: hidden;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

#scene {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  outline: none;
}

/* ---------- 顶部 HUD ---------- */
.hud-top {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  pointer-events: none;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--hud-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font: 600 14px/1 ui-monospace, "SF Mono", Menlo, monospace;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  min-width: 0;
}

.fish-ico {
  width: 18px;
  height: 11px;
  color: var(--accent);
  flex: none;
}

.fish-count {
  display: inline-block;
  transform-origin: center;
}
.fish-count.bump { animation: bump 0.35s ease-out; }

.sep {
  width: 1px;
  height: 14px;
  background: var(--hud-line);
}

.best {
  opacity: 0.7;
  font-weight: 500;
  font-size: 12px;
}
.best:empty { display: none; }

.actions {
  display: flex;
  gap: 6px;
  pointer-events: auto;
  flex: none;
}

.ui-btn {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--hud-bg);
  color: var(--ink);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}
.ui-btn svg { width: 20px; height: 20px; }
.ui-btn:hover { background: rgba(10, 26, 36, 0.72); }
.ui-btn:active { transform: scale(0.92); }
.ui-btn[aria-pressed="true"] { background: rgba(255, 192, 74, 0.32); }

:where(button, a):focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* ---------- 提示与覆盖层 ---------- */
.toast {
  position: absolute;
  left: 50%;
  bottom: max(24px, env(safe-area-inset-bottom));
  max-width: calc(100% - 32px);
  margin: 0;
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--hud-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 14px;
  line-height: 1.4;
  text-align: center;
  color: var(--ink);
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, 8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(8, 20, 28, 0.35);
}

.overlay-card {
  display: grid;
  justify-items: center;
  gap: 14px;
  padding: 22px 26px;
  border-radius: 20px;
  background: var(--hud-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.overlay-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.text-btn {
  min-height: 40px;
  padding: 0 18px;
  border: 1px solid var(--hud-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--ink);
  font: 600 14px/1 system-ui, -apple-system, "PingFang SC", sans-serif;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}
.text-btn:hover { background: rgba(255, 255, 255, 0.18); }
.text-btn:active { transform: scale(0.96); }

/* ---------- 快捷键面板 ---------- */
.help {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(8, 20, 28, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.help-card {
  width: min(420px, 100%);
  max-height: calc(100% - 8px);
  overflow: auto;
  padding: 20px 20px 18px;
  border-radius: 20px;
  background: rgba(10, 26, 36, 0.92);
  border: 1px solid var(--hud-line);
}

.help-card h2 {
  margin: 0 0 12px;
  font-size: 16px;
  letter-spacing: 0.04em;
}

.help-card dl {
  display: grid;
  grid-template-columns: minmax(92px, auto) 1fr;
  gap: 10px 14px;
  margin: 0;
  font-size: 14px;
  line-height: 1.4;
}
.help-card dt { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.help-card dd { margin: 0; opacity: 0.88; }

kbd {
  display: inline-block;
  min-width: 22px;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid var(--hud-line);
  font: 600 12px/1.4 ui-monospace, "SF Mono", Menlo, monospace;
  text-align: center;
}

.help-touch {
  margin: 14px 0;
  padding-top: 12px;
  border-top: 1px solid var(--hud-line);
  font-size: 13px;
  line-height: 1.6;
  opacity: 0.85;
}

.help-card .text-btn { width: 100%; }

/* ---------- 小屏 ---------- */
@media (max-width: 380px) {
  .hud-top { left: 12px; right: 12px; }
  .ui-btn { width: 36px; height: 36px; }
  .pill { font-size: 13px; padding: 6px 10px; gap: 6px; }
  .best { display: none; }
}

@keyframes bump {
  0% { transform: scale(1); }
  40% { transform: scale(1.35); }
  100% { transform: scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .fish-count.bump { animation: none; }
  .toast, .ui-btn, .text-btn { transition: none; }
}