/* 定义亮色模式和暗色模式的颜色变量 */
:root {
  /* 亮色模式 */
  --bg-color: #f4f4f4;
  --container-bg: white;
  --text-color: #333;
  --heading-color: #4a4a4a;
  --counter-color: #555;
  --button-bg: #4caf50;
  --button-hover-bg: #388e3c;
  --button-text: white;
  --cell-bg: #e0e0e0;
  --cell-shadow: rgba(0, 0, 0, 0.1);
  --highlight-color: #ffeb3b;
}

/* 暗色模式 */
[data-theme="dark"] {
  --bg-color: #121212;
  --container-bg: #1e1e1e;
  --text-color: #e0e0e0;
  --heading-color: #f0f0f0;
  --counter-color: #b0b0b0;
  --button-bg: #2e7d32;
  --button-hover-bg: #1b5e20;
  --button-text: #e0e0e0;
  --cell-bg: #2a2a2a;
  --cell-shadow: rgba(0, 0, 0, 0.3);
  --highlight-color: #ffd600;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Arial", sans-serif;
  background-color: var(--bg-color);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  color: var(--text-color);
  overflow: hidden; /* 防止页面滚动 */
  transition: background-color 0.3s ease;
}

.container {
  background-color: var(--container-bg);
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
  padding: 20px;
  text-align: center;
  transition: background-color 0.3s ease;
  height: 90vh;
  overflow-y: auto;
}

h1 {
  color: var(--heading-color);
  margin-bottom: 20px;
  transition: color 0.3s ease;
}

.game-info {
  margin-bottom: 20px;
  font-size: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.counter {
  font-weight: bold;
  color: var(--counter-color);
  transition: color 0.3s ease;
}

#clicks-left {
  display: inline-block;
}

/* 顶部容器 */
.top-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 15px;
  width: 100%;
}

/* 积分和记录显示 */
.score-display {
  font-size: 1.2rem;
  font-weight: bold;
  margin-top: 10px;
  color: var(--text-color);
  text-align: right;
}

.records-display {
  font-size: 0.9rem;
  opacity: 0.7;
  text-align: left;
  color: var(--counter-color);
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 0;
}

/* 主题切换开关样式 */
.theme-switch {
  display: flex;
  align-items: center;
  margin-top: 2px;
}

.theme-label {
  margin-left: 10px;
  font-size: 0.9rem;
  color: var(--counter-color);
  opacity: 0.7;
  transition: color 0.3s ease;
}

.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: 0.4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: 0.4s;
}

input:checked + .slider {
  background-color: var(--button-bg);
}

input:checked + .slider:before {
  transform: translateX(26px);
}

.slider.round {
  border-radius: 24px;
}

.slider.round:before {
  border-radius: 50%;
}

.game-board {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(5, 1fr);
  gap: 10px;
  width: 350px;
  height: 350px;
  margin: 0 auto 20px;
  position: relative; /* 为绝对定位动画元素添加相对定位 */
}

.cell {
  background-color: var(--cell-bg);
  border-radius: 8px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 24px;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.05s ease-out, background-color 0.15s ease-out;
  box-shadow: 0 2px 5px var(--cell-shadow);
  will-change: transform;
}

.cell:hover {
  transform: scale(1.05);
}

.cell.empty {
  background-color: transparent;
  box-shadow: none;
}

.falling {
  animation: fall 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

.new-cell {
  /* 移除动画效果，改为平滑过渡 */
  transition: opacity 0.25s ease-in;
  opacity: 1;
}

.highlight {
  animation: pulse 0.15s ease-in-out;
  background-color: var(--highlight-color);
  will-change: transform;
}

.pulse {
  animation: pulseOut 0.15s ease-in-out;
  will-change: transform, opacity;
}

@keyframes fall {
  0% {
    transform: translateY(-60px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

/* 修改appear动画为空，但保留以避免引用错误 */
@keyframes appear {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

@keyframes pulseOut {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(0);
    opacity: 0;
  }
}

button#restart-btn {
  padding: 10px 20px;
  background-color: var(--button-bg);
  color: var(--button-text);
  border: none;
  border-radius: 5px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.3s;
}

button#restart-btn:hover {
  background-color: var(--button-hover-bg);
}

/* 亮色模式下1-20的数字颜色 */
[data-theme="light"] .cell[data-value="1"] {
  background-color: #a2d2ff;
}
[data-theme="light"] .cell[data-value="2"] {
  background-color: #bde0fe;
}
[data-theme="light"] .cell[data-value="3"] {
  background-color: #ffafcc;
}
[data-theme="light"] .cell[data-value="4"] {
  background-color: #ffc8dd;
}
[data-theme="light"] .cell[data-value="5"] {
  background-color: #cdb4db;
}
[data-theme="light"] .cell[data-value="6"] {
  background-color: #98f5e1;
}
[data-theme="light"] .cell[data-value="7"] {
  background-color: #8eecf5;
}
[data-theme="light"] .cell[data-value="8"] {
  background-color: #90dbf4;
}
[data-theme="light"] .cell[data-value="9"] {
  background-color: #f08080;
}
[data-theme="light"] .cell[data-value="10"] {
  background-color: #f4a261;
}
[data-theme="light"] .cell[data-value="11"] {
  background-color: #e9c46a;
}
[data-theme="light"] .cell[data-value="12"] {
  background-color: #2a9d8f;
}
[data-theme="light"] .cell[data-value="13"] {
  background-color: #e76f51;
}
[data-theme="light"] .cell[data-value="14"] {
  background-color: #606c38;
}
[data-theme="light"] .cell[data-value="15"] {
  background-color: #dda15e;
}
[data-theme="light"] .cell[data-value="16"] {
  background-color: #bc6c25;
}
[data-theme="light"] .cell[data-value="17"] {
  background-color: #8338ec;
}
[data-theme="light"] .cell[data-value="18"] {
  background-color: #3a86ff;
}
[data-theme="light"] .cell[data-value="19"] {
  background-color: #fb8500;
}
[data-theme="light"] .cell[data-value="20"] {
  background-color: #ef233c;
}

/* 暗色模式下1-20的数字颜色 */
[data-theme="dark"] .cell[data-value="1"] {
  background-color: #01295f;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="2"] {
  background-color: #013a8b;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="3"] {
  background-color: #5f0140;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="4"] {
  background-color: #7a0158;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="5"] {
  background-color: #4a0155;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="6"] {
  background-color: #014d40;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="7"] {
  background-color: #016064;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="8"] {
  background-color: #014f86;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="9"] {
  background-color: #6a040f;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="10"] {
  background-color: #9c2c13;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="11"] {
  background-color: #9a6a15;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="12"] {
  background-color: #005f56;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="13"] {
  background-color: #9c3311;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="14"] {
  background-color: #283809;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="15"] {
  background-color: #935a15;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="16"] {
  background-color: #773e15;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="17"] {
  background-color: #4715a7;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="18"] {
  background-color: #0750c7;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="19"] {
  background-color: #a94900;
  color: #fff;
}
[data-theme="dark"] .cell[data-value="20"] {
  background-color: #a31630;
  color: #fff;
}

/* 格子消失的动画 */
@keyframes vanish {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(0);
    opacity: 0;
  }
}

.vanish {
  animation: vanish 0.15s ease-in-out;
}

/* 移动到目标位置的动画 */
.cell-clone {
  position: absolute;
  z-index: 100;
  transition-property: top, left;
  transition-timing-function: ease-in-out;
  transition-duration: 0.1s;
  pointer-events: none;
}

/* 下落后出现的新连通组高亮效果 - 更微妙的版本 */
.new-connected {
  animation: newConnected 0.4s ease-in-out;
  box-shadow: 0 0 4px rgba(255, 235, 59, 0.4);
  z-index: 5;
}

@keyframes newConnected {
  0%,
  100% {
    transform: scale(1);
    box-shadow: 0 0 2px rgba(255, 235, 59, 0.3);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 0 6px rgba(255, 235, 59, 0.5);
  }
}

/* 计数器和进度条样式 */
.counter-container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
}

.counter-label {
  font-weight: bold;
  color: var(--counter-color);
  transition: color 0.3s ease;
}

.progress-bar-container {
  width: 120px;
  height: 10px;
  background-color: rgba(0, 0, 0, 0.1);
  border-radius: 5px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 100%; /* 初始宽度，将由JavaScript控制 */
  background-color: var(--button-bg);
  border-radius: 5px;
  transition: width 0.3s ease;
}

/* 积分弹出动画 */
.score-popup {
  position: absolute;
  font-size: 1.5rem;
  font-weight: bold;
  color: #4caf50;
  z-index: 200;
  pointer-events: none;
  opacity: 1;
  transition: all 1s ease-out;
}

.score-popup.fade-up {
  transform: translateY(-50px);
  opacity: 0;
}

/* 新记录提示 */
.record-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.5);
  background-color: rgba(76, 175, 80, 0.9);
  color: white;
  padding: 15px 25px;
  border-radius: 8px;
  font-size: 1.4rem;
  font-weight: bold;
  z-index: 300;
  opacity: 0;
  transition: all 0.3s ease-out;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.record-popup.show {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
}

/* 在暗黑模式下调整显示 */
[data-theme="dark"] .score-popup {
  color: #81c784;
}

[data-theme="dark"] .record-popup {
  background-color: rgba(46, 125, 50, 0.9);
}

/* 游戏结束弹框 */
.game-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.game-modal.show {
  opacity: 1;
}

.game-modal::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 300px;
  background-color: var(--container-bg);
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  z-index: -1;
  padding: 20px;
}

.game-modal h2 {
  color: var(--heading-color);
  margin-bottom: 20px;
  text-align: center;
  font-size: 1.8rem;
}

.game-rules {
  padding: 0 20px;
  background-color: var(--container-bg);
  width: 20rem;
}

.game-rules h2 {
  font-size: 1rem;
  color: var(--button-bg);
  margin: 15px 0;
  border-bottom: 2px solid var(--button-bg);
}

.game-rules p {
  text-align: left;
  font-size: 0.9rem;
}

.game-results {
  margin: 20px 0;
  text-align: center;
}

.game-results p {
  margin: 10px 0;
  font-size: 1.2rem;
  color: var(--text-color);
}

.highlight-text {
  font-weight: bold;
  color: var(--button-bg);
}

.congrats {
  text-align: center;
  color: #ff9800;
  font-size: 1.5rem;
  font-weight: bold;
  margin: 20px 0;
  animation: pulse 1s infinite alternate;
}

.record-text {
  font-weight: bold;
  color: #ff9800;
}

.modal-buttons {
  display: flex;
  justify-content: center;
  margin-top: 25px;
}

.modal-btn {
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  margin: 0 10px;
}

.primary-btn {
  background-color: var(--button-bg);
  color: white;
}

.primary-btn:hover {
  background-color: var(--button-hover-bg);
  transform: scale(1.05);
}

[data-theme="dark"] .congrats {
  color: #ffb74d;
}

[data-theme="dark"] .record-text {
  color: #ffb74d;
}

/* 为游戏结束弹框添加的媒体查询，优化在小屏幕上的显示 */
@media (max-width: 480px) {
  .container {
    height: 100vh;
    overflow-y: hidden;
  }
}
.game-modal::before {
  /* width: 90%; */
  height: auto;
  aspect-ratio: 1/1.2;
}

.game-modal h2 {
  font-size: 1.5rem;
}

.game-results p {
  font-size: 1rem;
}

.congrats {
  font-size: 1.2rem;
}

/* 确认弹框的特殊样式 */
.modal-message {
  text-align: center;
  margin: 20px 0;
  color: var(--text-color);
  font-size: 1.1rem;
}

#confirm-modal::before {
  width: 520px;
  height: 180px;
}
#language-select {
  appearance: none; /* 去掉原生箭头 */
  -webkit-appearance: none;
  -moz-appearance: none;

  background-color: #ffffff;
  border: 1px solid #ccc;
  padding: 10px 40px 10px 15px;
  font-size: 16px;
  border-radius: 8px;
  color: #333;
  background-image: url("data:image/svg+xml;utf8,<svg fill='gray' height='20' viewBox='0 0 24 24' width='20' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
}

#language-select:focus {
  border-color: #7aa0ff;
  box-shadow: 0 0 0 3px rgba(122, 160, 255, 0.3);
  outline: none;
}

/* 其他按钮的样式 */
.modal-btn:not(.primary-btn) {
  background-color: #e0e0e0;
  color: #333;
}

.modal-btn:not(.primary-btn):hover {
  background-color: #d0d0d0;
  transform: scale(1.05);
}

[data-theme="dark"] .modal-btn:not(.primary-btn) {
  background-color: #424242;
  color: #e0e0e0;
}

[data-theme="dark"] .modal-btn:not(.primary-btn):hover {
  background-color: #535353;
}