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

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    position: fixed;
    overflow: hidden;
    -webkit-overflow-scrolling: touch;
    background-color: #f0f0f0;
    min-height: -webkit-fill-available;
}

.fullscreen-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100vh;
    height: -webkit-fill-available;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.game-container {
    max-width: 428px;
    width: 100%;
    height: 100%;
    max-height: 100vh;
    margin: 0;
    padding: 5px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    min-height: 500px;
}

.game-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4px;
    flex-shrink: 0;
    gap: 4px;
}

.score-box {
    background: #fff;
    padding: 6px 10px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    font-size: 13px;
}

.game-board {
    flex: 1;
    min-height: 0;
    max-height: 75vh;
    width: 100%;
    max-width: 320px;
    aspect-ratio: 1/1.9;
    margin: 4px auto;
    background: #f8f8f8;
    border: 2px solid #333;
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 0;
    padding: 0;
}

.controls {
    margin-top: 4px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    padding: 4px;
    width: 100%;
    position: sticky;
    bottom: 0;
    background: #f0f0f0;
}

.control-btn {
    padding: 8px 6px;
    border: none;
    border-radius: 10px;
    background: #007AFF;
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s;
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    min-height: 36px;
}

.control-btn:active {
    background: #0051a8;
}

.next-piece-board {
    width: 50px;
    height: 50px;
    background: #fff;
    border: 1px solid #333;
    border-radius: 8px;
    padding: 4px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.difficulty-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3px;
    margin-bottom: 4px;
}

.difficulty-btn {
    padding: 4px 8px;
    border: 1px solid #007AFF;
    border-radius: 8px;
    background: transparent;
    color: #007AFF;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s;
    min-height: 28px;
}

.difficulty-btn.active {
    background: #007AFF;
    color: white;
}

.cell {
    width: 100%;
    height: 100%;
    transition: background-color 0.1s;
    border-radius: 0;
    border: none;
}

/* 添加分数提示的动画样式 */
.score-popup {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 122, 255, 0.9);
    color: white;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 18px;
    font-weight: bold;
    animation: popupFade 2s ease-out forwards;
    z-index: 100;
}

@keyframes popupFade {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.5);
    }
    20% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.2);
    }
    30% {
        transform: translate(-50%, -50%) scale(1);
    }
    80% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -100%) scale(1);
    }
}

/* 添加预览区域的网格单元格样式 */
.preview-cell {
    aspect-ratio: 1;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
}

@supports (padding-top: env(safe-area-inset-top)) {
    .game-container {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }
}

@supports (padding: max(0px)) {
    .game-container {
        padding-left: max(5px, env(safe-area-inset-left));
        padding-right: max(5px, env(safe-area-inset-right));
        padding-top: max(5px, env(safe-area-inset-top));
        padding-bottom: max(10px, env(safe-area-inset-bottom));
    }
}

/* 添加退出按钮样式 */
.exit-btn {
    background: #FF3B30;
}

.exit-btn:active {
    background: #D70015;
}

/* 添加方块落地动画样式 */
.block-fall-animation {
    animation: blockFall 0.5s ease-out forwards;
}

@keyframes blockFall {
    0% {
        transform: translateY(-100%);
    }
    100% {
        transform: translateY(0);
    }
}

/* 添加消行特效样式 */
.line-clear-animation {
    animation: lineClear 0.5s ease-out forwards;
}

@keyframes lineClear {
    0% {
        transform: translateY(-100%);
    }
    100% {
        transform: translateY(0);
    }
}

/* 添加主题切换功能样式 */
.theme-selector {
    display: flex;
    gap: 4px;
}

.theme-btn {
    padding: 4px 8px;
    border: 1px solid #007AFF;
    border-radius: 8px;
    background: transparent;
    color: #007AFF;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s;
}

.theme-btn.active {
    background: #007AFF;
    color: white;
}

/* 添加媒体查询，处理超大字体情况 */
@media screen and (min-height: 700px) {
    .game-container {
        justify-content: space-between;
    }
    
    .controls {
        margin-bottom: env(safe-area-inset-bottom, 10px);
    }
}

/* 处理极小屏幕情况 */
@media screen and (max-height: 600px) {
    .game-board {
        max-height: 60vh;
    }
    
    .controls {
        grid-template-columns: repeat(3, 1fr);
    }
}