:root {
  --bg: #ffffff;
  --ink: #20223a;
  --ink-2: #686a80;
  --ink-3: #a3a5b5;
  --cell: #e4e6ee;
  --primary: #4f5bd5;
  --primary-soft: #e9ebfb;
  --danger: #e5484d;
  --wall: #1f1f27;
  --wall-stripe: #ffc826;
  --hex: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  height: 100%;
  background: #f2f2f6;
  color: var(--ink);
  font-family: "SF Pro Rounded", "PingFang SC", "Helvetica Neue", "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  overscroll-behavior: none;
}

#app {
  position: relative;
  margin: 0 auto;
  width: 100%;
  max-width: 480px;
  height: 100vh;
  height: 100dvh;
  background: var(--bg);
  overflow: hidden;
}

.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding: calc(var(--safe-top) + 12px) calc(var(--safe-right) + 20px) calc(var(--safe-bottom) + 16px)
    calc(var(--safe-left) + 20px);
}

.screen.hidden {
  display: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  -webkit-touch-callout: none;
}

button:active {
  transform: scale(0.97);
}

/* ---------- 选关 ---------- */

.select-header {
  padding: 24px 4px 8px;
}

.logo {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
}

.logo-hex {
  width: 26px;
  height: 30px;
  background: var(--cell);
  clip-path: var(--hex);
}

.logo-hex.on {
  background: var(--primary);
}

.logo-hex.wall {
  background: repeating-linear-gradient(135deg, var(--wall) 0 5px, var(--wall-stripe) 5px 10px);
}

.select-header h1 {
  margin: 0;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.select-header .sub {
  margin: 8px 0 0;
  color: var(--ink-2);
  font-size: 15px;
}

.pack {
  margin-top: 24px;
}

.pack-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 0 4px 12px;
  font-size: 17px;
  font-weight: 700;
}

.pack-progress {
  color: var(--ink-3);
  font-size: 14px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px 12px;
}

.pack-head {
  grid-column: 1 / -1;
  padding: 10px 4px 0;
  color: var(--ink-3);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.pack-head:first-child {
  padding-top: 0;
}

.level-tile {
  position: relative;
  aspect-ratio: 0.9;
  clip-path: var(--hex);
  background: var(--cell);
  color: var(--ink);
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.12s ease;
}

.level-tile.cleared {
  background: var(--primary);
  color: #fff;
}

.level-tile.cleared::after {
  content: "";
  position: absolute;
  right: 22%;
  top: 22%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
}

.level-tile.current {
  background: var(--primary-soft);
  color: var(--primary);
}

.level-tile.current::before {
  content: "";
  position: absolute;
  inset: 0;
  clip-path: var(--hex);
  background: var(--primary);
  z-index: -1;
}

.level-tile.current span {
  position: relative;
}

.level-tile.current {
  isolation: isolate;
}

.level-tile.current::after {
  content: "";
  position: absolute;
  inset: 3px;
  clip-path: var(--hex);
  background: var(--primary-soft);
  z-index: -1;
}

.level-tile.locked {
  color: var(--ink-3);
  background: #f0f0f4;
}

.level-tile.locked::before {
  content: "";
  width: 10px;
  height: 12px;
  border: 2px solid var(--ink-3);
  border-radius: 3px;
  border-top-width: 3px;
}

.level-tile.locked span {
  display: none;
}

.level-tile.shake {
  animation: shake 0.3s ease;
}

.primary {
  margin-top: auto;
  height: 54px;
  border-radius: 16px;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  box-shadow: 0 6px 18px rgba(79, 91, 213, 0.28);
}

.select-footer {
  display: flex;
  justify-content: center;
  gap: 10px;
  padding-top: 18px;
}

.chip {
  height: 34px;
  padding: 0 14px;
  border-radius: 17px;
  background: #f0f0f4;
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 600;
}

.chip.on {
  background: var(--primary-soft);
  color: var(--primary);
}

.chip.danger {
  color: var(--danger);
}

/* ---------- 对局 ---------- */

.topbar {
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  align-items: center;
  height: 48px;
}

.topbar .icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-2);
  border-radius: 22px;
}

.level-title {
  text-align: center;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

.remaining {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-2);
  font-size: 15px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  min-width: 44px;
  justify-content: flex-end;
}

.remaining .hex-dot {
  width: 13px;
  height: 15px;
  clip-path: var(--hex);
  background: var(--ink-3);
}

.caption {
  height: 40px;
  margin-top: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-2);
  font-size: 15px;
  text-align: center;
  transition: opacity 0.2s;
}

.caption:empty {
  opacity: 0;
}

.board-wrap {
  flex: 1;
  min-height: 0;
  position: relative;
}

#board {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
  display: block;
}

.bottombar {
  display: flex;
  justify-content: center;
  gap: 14px;
  padding-top: 12px;
}

.action {
  flex: 1;
  max-width: 170px;
  height: 56px;
  border-radius: 18px;
  background: #f0f0f4;
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 0.15s;
}

.action.pulse {
  animation: pulse 0.9s ease infinite;
}

.action:disabled {
  opacity: 0.4;
  pointer-events: none;
}

.toast {
  position: absolute;
  left: 50%;
  bottom: calc(var(--safe-bottom) + 92px);
  transform: translate(-50%, 8px);
  padding: 10px 16px;
  border-radius: 12px;
  background: rgba(32, 34, 58, 0.92);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s, transform 0.18s;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-5px);
  }
  50% {
    transform: translateX(5px);
  }
  75% {
    transform: translateX(-3px);
  }
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(255, 122, 26, 0);
  }
  50% {
    box-shadow: 0 0 0 5px rgba(255, 122, 26, 0.35);
  }
}

@media (min-width: 520px) {
  body {
    padding: 24px 0;
  }
  #app {
    height: calc(100vh - 48px);
    height: calc(100dvh - 48px);
    border-radius: 28px;
    box-shadow: 0 20px 60px rgba(20, 20, 40, 0.14);
  }
}