/* 配色取自安卓端 Theme.kt 的 Light/Dark Scheme，深浅由 <html data-theme> 切换。 */

:root[data-theme="light"] {
  --bg: #faf7f0;
  --surface: #fffdf8;
  --surface-variant: #ede8dc;
  --on-bg: #23211c;
  --on-variant: #4c4842;
  --primary: #5f7f68;
  --on-primary: #ffffff;
  --primary-container: #d3e3d7;
  --error: #b3402f;
  --panel: #edeae3;
}

:root[data-theme="dark"] {
  --bg: #14161a;
  --surface: #1d2025;
  --surface-variant: #2c2f34;
  --on-bg: #e6e2da;
  --on-variant: #bfbbb3;
  --primary: #8fb39a;
  --on-primary: #11291b;
  --primary-container: #2f4738;
  --error: #e58a78;
  --panel: #23262b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--on-bg);
  font: 16px/1.5 system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-text-size-adjust: 100%;
}

#app {
  max-width: 560px;
  margin: 0 auto;
  min-height: 100dvh;
}

.screen {
  padding: 16px 16px calc(16px + env(safe-area-inset-bottom));
}

h1 {
  font-size: 30px;
  margin: 24px 0 12px;
}

h2 {
  font-size: 20px;
  margin: 0;
}

h3 {
  font-size: 15px;
  margin: 18px 0 8px;
}

p {
  margin: 8px 0;
}

.muted {
  color: var(--on-variant);
}

.small {
  font-size: 13px;
}

.head {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 12px;
}

.link {
  background: none;
  border: 0;
  color: var(--primary);
  font: inherit;
  cursor: pointer;
  padding: 6px 8px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

.btn {
  display: block;
  width: 100%;
  padding: 12px 16px;
  border-radius: 22px;
  border: 1px solid var(--primary);
  background: transparent;
  color: var(--primary);
  font: inherit;
  cursor: pointer;
}

.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--on-primary);
}

.btn.danger {
  border-color: var(--error);
  color: var(--error);
  margin-top: 16px;
}

.card {
  background: var(--surface);
  border-radius: 14px;
}

.card.pad {
  padding: 12px;
}

.list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  cursor: pointer;
}

.row-title {
  font-weight: 600;
}

.count {
  color: var(--on-variant);
  font-weight: 600;
}

.count.done {
  color: var(--primary);
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.level {
  aspect-ratio: 1;
  border: 0;
  border-radius: 10px;
  background: var(--surface-variant);
  color: inherit;
  font: inherit;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.level.solved {
  background: var(--primary-container);
}

.level.solved .num {
  font-weight: 700;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 7px 14px;
  border-radius: 18px;
  border: 1px solid var(--surface-variant);
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

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

.setting {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
}

.setting input {
  width: 20px;
  height: 20px;
  accent-color: var(--primary);
}

/* ── 对局 ─────────────────────────────────────────────── */

.play {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  padding: 6px 10px calc(6px + env(safe-area-inset-bottom));
  gap: 6px;
}

.play-head {
  display: flex;
  align-items: center;
  gap: 4px;
}

.play-title {
  flex: 1;
}

.timer {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.hearts {
  align-self: center;
  background: var(--surface-variant);
  border-radius: 999px;
  padding: 3px 18px;
  display: flex;
  gap: 6px;
  font-size: 20px;
  line-height: 1.2;
  color: var(--on-variant);
}

.heart.on {
  color: var(--error);
}

.rules {
  display: flex;
  background: var(--surface);
  border-radius: 14px;
  height: 46px;
  align-items: center;
  color: var(--on-variant);
  font-size: 11px;
  line-height: 13px;
  text-align: center;
}

.rules span {
  flex: 1;
}

.rules span + span {
  border-left: 1px solid var(--surface-variant);
}

.remaining {
  align-self: center;
  background: var(--surface);
  border-radius: 999px;
  padding: 5px 14px;
  font-size: 13px;
}

.remaining b {
  color: var(--error);
  font-size: 14px;
}

/* 棋盘吃掉中间的剩余空间，并且始终是正方形 —— 小屏上也不会把下面的按钮挤出去 */
.board-panel {
  flex: 1;
  min-height: 0;
  aspect-ratio: 1;
  max-width: min(100%, calc(100dvh - 320px));
  align-self: center;
  background: var(--panel);
  border-radius: 16px;
  padding: 6px;
}

.board {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: pointer;
}

.tools {
  display: flex;
  gap: 6px;
}

.tool {
  flex: 1;
  border: 0;
  border-radius: 12px;
  background: var(--surface-variant);
  color: var(--on-variant);
  font: inherit;
  cursor: pointer;
  padding: 6px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
}

.tool b {
  font-size: 17px;
  font-weight: 400;
}

.tool span {
  font-size: 11px;
}

.tool:disabled {
  opacity: 0.4;
  cursor: default;
}

.tool.on {
  background: var(--primary-container);
}

/* 高度固定：通关提示走弹窗，不会因为多一行字把棋盘往上挤 */
.hint-slot {
  min-height: 64px;
}

.hint-slot p {
  margin: 0 4px;
}

/* ── 弹窗与加载 ─────────────────────────────────────────── */

.scrim {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: grid;
  place-items: center;
  padding: 24px;
}

.dialog {
  background: var(--surface);
  color: var(--on-bg);
  border-radius: 20px;
  padding: 22px;
  max-width: 340px;
  width: 100%;
}

.dialog h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.dialog-actions {
  display: flex;
  gap: 8px;
  margin-top: 18px;
}

.dialog-actions .btn {
  width: auto;
  flex: 1;
}

.loading {
  display: grid;
  place-items: center;
  min-height: 60dvh;
  gap: 12px;
  color: var(--on-variant);
}

.spinner {
  width: 30px;
  height: 30px;
  border: 3px solid var(--surface-variant);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
