/* 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;
}

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: .4s;
}

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

/* 根据数字显示不同颜色 */
/* 移除旧的单独数字颜色定义，现在由主题样式控制 */
/* 
.cell[data-value="1"] {
    background-color: #a2d2ff;
}

.cell[data-value="2"] {
    background-color: #bde0fe;
}

.cell[data-value="3"] {
    background-color: #ffafcc;
}

.cell[data-value="4"] {
    background-color: #ffc8dd;
}

.cell[data-value="5"] {
    background-color: #cdb4db;
}

.cell[data-value="6"] {
    background-color: #98f5e1;
}

.cell[data-value="7"] {
    background-color: #8eecf5;
}

.cell[data-value="8"] {
    background-color: #90dbf4;
}

.cell[data-value="9"] {
    background-color: #f08080;
}

.cell[data-value="10"] {
    background-color: #f4a261;
}
*/

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);
}

/* 移除调试连通组的样式 */
/* 
.cell.debug-group-1 {
    border: 3px solid red;
    z-index: 10;
}

.cell.debug-group-2 {
    border: 3px solid green;
    z-index: 10;
}

.cell.debug-group-3 {
    border: 3px solid blue;
    z-index: 10;
}
*/

/* 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;
    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-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) {
    .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: 280px;
    height: 180px;
}

/* 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;
}