/* 通用复位样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Press Start 2P', 'Courier New', monospace;
    background-color: #050a14;
    color: #f0f0f0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding-top: 2vh;
    background-image: radial-gradient(circle at center, #0a1a2c 0%, #050a14 70%);
    overflow: hidden;
}

/* 游戏容器样式 */
.container_7ree {
    width: 100%;
    max-width: 1000px;
    margin: 20px auto;
    display: flex;
    flex-wrap: wrap;
    position: relative;
    box-shadow: 
        0 10px 30px rgba(0, 0, 0, 0.7),
        0 0 40px rgba(0, 200, 200, 0.2), /* 增强青色光晕效果 */
        inset 0 0 15px rgba(0, 155, 155, 0.1); /* 增强内部光晕 */
    border-radius: 15px;
    background: linear-gradient(135deg, #0c276f 0%, #161a20 100%);
    border: 1px solid #333;
    padding: 25px;
    box-sizing: border-box;
}

/* 标题样式 */
.title_7ree {
    font-size: 24px;
    text-align: center;
    color: #00ffff;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.7);
    margin-bottom: 30px;
    letter-spacing: 1px;
}

/* 游戏面板容器样式 */
#game_board_container_7ree {
    position: relative;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

/* 游戏面板样式 */
#game_board_7ree {
    width: 100%;
    aspect-ratio: 11 / 20;
    display: grid;
    border: 8px solid #111;
    border-radius: 8px;
    background-color: #101215; /* 基础颜色 */
    background-image: 
        radial-gradient(circle at 30% 35%, rgba(20, 40, 80, 0.4) 0%, transparent 45%),
        radial-gradient(circle at 70% 65%, rgba(10, 30, 60, 0.3) 0%, transparent 40%),
        linear-gradient(to bottom, #0c0e12 0%, #101215 30%, #131925 70%, #0a0e18 100%);
    box-shadow: 
        0 0 40px rgba(0, 20, 40, 0.6),
        inset 0 0 20px rgba(0, 100, 200, 0.2);
    margin: 0 auto;
    max-height: 80vh;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    perspective: 800px;
    transform: translateZ(0);
    
    /* 更新边框样式 */
    border-style: solid;
    border-width: 8px;
    border-color: #1a2a3a;
    /* 添加高亮边框效果 */
    border-image: linear-gradient(135deg, #2c4060 0%, #0d1520 100%) 1;
    box-shadow: 
        0 0 40px rgba(0, 20, 40, 0.6),
        inset 0 0 20px rgba(0, 100, 200, 0.2),
        0 0 0 1px rgba(100, 180, 255, 0.3); /* 外部高亮边缘 */
}

/* 游戏面板内边框发光效果 */
#game_board_7ree::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 1px solid rgba(100, 180, 255, 0.3);
    box-shadow: inset 0 0 15px rgba(0, 150, 255, 0.2);
    pointer-events: none;
    z-index: 2;
}

/* 游戏面板两侧边缘高光效果 */
#game_board_7ree::after {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    right: -8px;
    height: 8px;
    background: linear-gradient(to bottom, 
        rgba(100, 200, 255, 0.4) 0%,
        rgba(30, 60, 100, 0.3) 60%, 
        rgba(10, 30, 60, 0.1) 100%);
    transform: translateZ(2px) rotateX(45deg);
    transform-origin: bottom;
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
    pointer-events: none;
    z-index: 3;
}

/* 游戏面板左侧边缘高光效果 */
.game_board_side_effect {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    width: 8px;
    height: calc(100% + 16px);
    background: linear-gradient(to right, 
        rgba(100, 200, 255, 0.5) 0%,
        rgba(30, 60, 100, 0.4) 60%, 
        rgba(5, 15, 30, 0.2) 100%);
    transform: translateZ(2px) rotateY(-45deg);
    transform-origin: right;
    border-top-left-radius: 4px;
    border-bottom-left-radius: 4px;
    pointer-events: none;
    z-index: 3;
}

/* 添加游戏面板右侧边缘高光效果 */
.game_board_right_side_effect {
    content: '';
    position: absolute;
    top: -8px;
    right: -8px;
    width: 8px;
    height: calc(100% + 16px);
    background: linear-gradient(to left, 
        rgba(100, 200, 255, 0.5) 0%,
        rgba(30, 60, 100, 0.4) 60%, 
        rgba(5, 15, 30, 0.2) 100%);
    transform: translateZ(2px) rotateY(45deg);
    transform-origin: left;
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
    pointer-events: none;
    z-index: 3;
}

/* 游戏面板扫光动画效果 */
.game_board_light_sweep {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    /* 增强扫光效果：提高透明度并加宽光带 */
    background: linear-gradient(45deg, 
        transparent 40%, 
        rgba(0, 200, 255, 0.1) 50%, /* 透明度从 0.03 提高到 0.15 */
        transparent 60%
    );
    animation: lightSweep 8s infinite linear;
    pointer-events: none;
    z-index: 1;
}

@keyframes lightSweep {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* 下一个方块预览区域 */
#next_piece_7ree {
    width: 100%;
    aspect-ratio: 1 / 1;
    display: grid;
    background: linear-gradient(to bottom, rgba(5, 15, 30, 0.9) 0%, rgba(10, 25, 45, 0.8) 100%);
    border: 2px solid #2a4060; /* 更鲜明的蓝色边框 */
    border-radius: 5px;
    margin: 10px 0;
    box-shadow: 
        inset 0 0 15px rgba(0, 20, 40, 0.5),
        0 0 8px rgba(0, 100, 150, 0.2);
    position: relative;
    overflow: hidden;
}

#next_piece_7ree::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(100, 200, 255, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.preview_cell_7ree {
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-sizing: border-box;
}

/* 按钮样式 */
.btn_7ree {
    background-color: #1a2330;
    color: #00ffff;
    border: none;
    border-radius: 20px;
    padding: 8px 10px;
    margin: 5px;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    transition: all 0.2s;
    outline: none;
    text-transform: uppercase;
    background-color: #2a2a2a;

    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3), inset 0 0 5px rgba(0, 200, 200, 0.2);
    display: inline-flex;
    align-items: center;
    justify-content: center;

    user-select: none; /* 标准语法 */
    -webkit-user-select: none; /* Safari */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* IE/Edge */
    -webkit-tap-highlight-color: transparent; /* 移除移动端点击高亮 */

}

.btn_7ree:hover {
    background-color: #243040;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.3);
}

.btn_7ree:active {
    transform: scale(0.95);
    background-color: #222;
}

.btn_7ree:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

/* 数据统计区域 */
.stats_7ree {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.score_container_7ree,
.level_container_7ree,
.lines_container_7ree,
.time_container_7ree {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px;
    background-color: rgba(10, 20, 35, 0.6);
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

.label_7ree {
    font-size: 12px;
    margin-bottom: 5px;
    color: #aaa;
}

#score_7ree,
#level_7ree,
#lines_7ree,
#time_7ree {
    font-size: 18px;
    color: #00ffff;
    text-shadow: 0 0 8px rgba(0, 255, 255, 0.5);
}

/* 控制区域 */
.controls_7ree {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
}

.direction_controls_7ree,
.action_controls_7ree {
    display: flex;
    justify-content: center;
    margin-top: 15px;
    width: 100%;
}

/* 移动端标题和统计(PC端隐藏) */
.mobile_title_7ree,
.mobile_stats_7ree {
    display: none;
}

.cell_7ree {
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    box-sizing: border-box;
    transform-style: preserve-3d;
    perspective: 500px;
}

.cell_7ree.active_7ree {
    border: 1px solid rgba(120, 180, 220, 0.5); /* 增强边框对比度 */
    box-shadow: 
        inset 0 0 5px rgba(100, 200, 255, 0.3),
        0 3px 5px rgba(0, 50, 100, 0.2); /* 添加底部阴影 */
    transform: translateZ(2px); /* 使用3D变换增强立体感 */
    transition: all 0.1s ease;
}

/* 3D方块效果 - 活动方块内部方块 */
.cell_7ree.active_7ree::before {
    content: '';
    position: absolute;
    top: 15%;
    left: 15%;
    width: 70%;
    height: 70%;
    background: inherit;
    border: 1px solid rgba(255, 255, 255, 0.3);
    /* 添加更复杂的阴影模拟第三层 */
    box-shadow: 
        inset 2px 2px 5px rgba(255, 255, 255, 0.6), /* 模拟顶部小方块的高光 */
        inset -2px -2px 5px rgba(100, 150, 200, 0.3), /* 模拟顶部小方块的阴影 */
        inset 0 0 8px rgba(255, 255, 255, 0.4), /* 保留原内阴影 */
        0 0 5px rgba(0, 150, 255, 0.2); /* 保留外发光 */
    transform: translateZ(2px);
    z-index: 2;
}

/* 活动方块的顶部光照效果 */
.cell_7ree.active_7ree::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
                             rgba(255, 255, 255, 0.5) 0%, 
                             rgba(180, 220, 250, 0.4) 10%, 
                             rgba(100, 160, 220, 0.2) 30%,
                             rgba(0, 0, 0, 0) 70%);
    pointer-events: none;
    z-index: 1;
}

/* 活动方块四角连接线 */
.cell_7ree.active_7ree span {
    content: '';
    position: absolute;
    width: 15%;
    height: 15%;
    border-color: rgba(255, 255, 255, 0.5);
    border-style: solid;
    border-width: 0;
    z-index: 3;
}

/* 左上角 */
.cell_7ree.active_7ree span:nth-child(1) {
    top: 15%;
    left: 15%;
    border-left-width: 1px;
    border-top-width: 1px;
}

/* 右上角 */
.cell_7ree.active_7ree span:nth-child(2) {
    top: 15%;
    right: 15%;
    border-right-width: 1px;
    border-top-width: 1px;
}

/* 左下角 */
.cell_7ree.active_7ree span:nth-child(3) {
    bottom: 15%;
    left: 15%;
    border-left-width: 1px;
    border-bottom-width: 1px;
}

/* 右下角 */
.cell_7ree.active_7ree span:nth-child(4) {
    bottom: 15%;
    right: 15%;
    border-right-width: 1px;
    border-bottom-width: 1px;
}

/* 预览方块的3D效果 */
.preview_cell_7ree.active_preview_7ree {
    position: relative;
    border: 1px solid rgba(120, 180, 220, 0.5); /* 增强边框对比度 */
    box-shadow: 
        inset 0 0 5px rgba(100, 200, 255, 0.3),
        0 3px 5px rgba(0, 50, 100, 0.2); /* 添加底部阴影 */
    transform: translateZ(1px); /* 轻微3D效果 */
    transform-style: preserve-3d;
}

/* 预览方块内部方块 */
.preview_cell_7ree.active_preview_7ree::before {
    content: '';
    position: absolute;
    top: 15%;
    left: 15%;
    width: 70%;
    height: 70%;
    background: inherit;
    border: 1px solid rgba(255, 255, 255, 0.3);
    /* 添加更复杂的阴影模拟第三层 */
    box-shadow: 
        inset 2px 2px 5px rgba(255, 255, 255, 0.6),
        inset -2px -2px 5px rgba(100, 150, 200, 0.3),
        inset 0 0 8px rgba(255, 255, 255, 0.4),
        0 0 5px rgba(0, 150, 255, 0.2);
    transform: translateZ(2px);
    z-index: 2;
}

/* 预览方块光照效果 */
.preview_cell_7ree.active_preview_7ree::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
                             rgba(255, 255, 255, 0.5) 0%, 
                             rgba(180, 220, 250, 0.4) 10%, 
                             rgba(100, 160, 220, 0.2) 30%,
                             rgba(0, 0, 0, 0) 70%);
    pointer-events: none;
    z-index: 1;
}

/* 3D方块效果 - 落地灰色方块 */
.cell_7ree.landed_7ree {
    border: 1px solid #6a7a8c; /* 更明亮、更锐利的边框 */
    box-shadow: 
        inset 1px 1px 3px rgba(180, 200, 230, 0.4), 
        inset -1px -1px 3px rgba(10, 20, 40, 0.6),
        0 1px 1px rgba(0, 0, 0, 0.2); /* 添加底部阴影 */
    position: relative;
    transform: translateZ(1px);
    transform-style: preserve-3d;
}

/* 落地方块内部方块 */
.cell_7ree.landed_7ree::before {
    content: '';
    position: absolute;
    top: 15%;
    left: 15%;
    width: 70%;
    height: 70%;
    background: inherit;
    border: 1px solid rgba(255, 255, 255, 0.2);
    /* 添加更复杂的阴影模拟第三层 */
    box-shadow: 
        inset 2px 2px 4px rgba(200, 220, 240, 0.4), /* 模拟顶部小方块的高光 */
        inset -2px -2px 4px rgba(50, 70, 90, 0.3), /* 模拟顶部小方块的阴影 */
        inset 1px 1px 3px rgba(180, 200, 230, 0.3), /* 保留原内阴影 */
        inset -1px -1px 3px rgba(10, 20, 40, 0.5); /* 保留原内阴影 */
    transform: translateZ(1px);
    z-index: 2;
}

/* 落地方块光照效果 */
.cell_7ree.landed_7ree::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
                             rgba(200, 220, 240, 0.3) 0%, 
                             rgba(140, 170, 200, 0.2) 20%,
                             rgba(90, 120, 160, 0.1) 40%, 
                             rgba(0, 0, 0, 0) 70%);
    pointer-events: none;
    z-index: 1;
}

/* 按钮激活状态的视觉反馈 (适用于所有设备) */
.btn_7ree.btn_active_7ree {
    transform: scale(0.95); /* 轻微缩小 */
    box-shadow: inset 2px 2px 5px rgba(0, 0, 0, 0.5), 0 0 5px rgba(0, 255, 255, 0.5); /* 模拟按下的内阴影和外发光 */
    background-color: #009999 !important; /* 更鲜艳的青色 + !important确保优先级 */
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out, background-color 0.2s ease-out; /* 与普通按钮过渡时间匹配 */
}

/* --- 新增：行消除粒子爆炸动画 --- */
/* 粒子容器 */
.particles-container_7ree {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 20;
}

/* 基础粒子样式 */
.particle_7ree {
    position: absolute;
    /* 降低边界对比度，使用不规则形状 */
    border-radius: 40%; /* 不那么完美的圆 */
    background-color: rgba(11, 41, 110, 0.7); /* 降低不透明度 */
    /* 模糊边缘，减弱轮廓感 */
    filter: blur(1px);
    box-shadow: 0 0 5px 1px rgba(0, 150, 255, 0.3);
    pointer-events: none;
    opacity: 0;
    /* 添加一些变换以减少粒子看起来过于一致 */
    transform-origin: center;
}

/* 被标记为消除的单元格 */
.cell_7ree.line-clearing_7ree {
    animation: cell-clearing_7ree 0.8s ease-in-out forwards;
    z-index: 10;
}

/* 单元格消除动画 */
@keyframes cell-clearing_7ree {
    0% {
        transform: scale(1);
        filter: brightness(1);
        opacity: 1;
        box-shadow: none;
    }
    50% {
        transform: scale(1.1);
        filter: brightness(1.5);
        opacity: 1;
        box-shadow: 0 0 15px rgba(11, 41, 110, 0.8);
    }
    100% {
        transform: scale(0);
        filter: brightness(2);
        opacity: 0;
        box-shadow: 0 0 20px rgba(11, 41, 110, 0);
    }
}

/* 粒子爆炸动画 - 多种变体，增加随机性 */
@keyframes particle-explosion1_7ree {
    0% {
        transform: translate(-50%, -50%) scale(0.2) rotate(0deg);
        opacity: 0.8;
        filter: blur(1px);
    }
    20% {
        opacity: 0.9;
        filter: blur(1.5px);
    }
    100% {
        transform: translate(-50%, -50%) translateX(var(--tx)) translateY(var(--ty)) scale(var(--scale)) rotate(var(--rotate));
        opacity: 0;
        filter: blur(2px);
    }
}

@keyframes particle-explosion2_7ree {
    0% {
        transform: translate(-50%, -50%) scale(0.3) rotate(0deg);
        opacity: 0.8;
        filter: blur(1px);
    }
    40% {
        opacity: 0.75;
        filter: blur(1.5px);
    }
    100% {
        transform: translate(-50%, -50%) translateX(var(--tx)) translateY(var(--ty)) scale(var(--scale)) rotate(var(--rotate));
        opacity: 0;
        filter: blur(2.5px);
    }
}

@keyframes particle-explosion3_7ree {
    0% {
        transform: translate(-50%, -50%) scale(0.4) rotate(0deg);
        opacity: 0.7;
        filter: blur(1px);
    }
    30% {
        opacity: 0.8;
        filter: blur(1.5px);
    }
    100% {
        transform: translate(-50%, -50%) translateX(var(--tx)) translateY(var(--ty)) scale(var(--scale)) rotate(var(--rotate));
        opacity: 0;
        filter: blur(3px);
    }
}

/* 中心光效动画 */
@keyframes center-glow_7ree {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 0.7;
        filter: blur(2px);
        box-shadow: 0 0 10px 2px rgba(0, 150, 255, 0.6);
    }
    50% {
        transform: translate(-50%, -50%) scale(2);
        opacity: 0.5;
        filter: blur(4px);
        box-shadow: 0 0 30px 15px rgba(0, 100, 255, 0.4);
    }
    100% {
        transform: translate(-50%, -50%) scale(4);
        opacity: 0;
        filter: blur(6px);
        box-shadow: 0 0 0 0 rgba(0, 150, 255, 0);
    }
}

/* 水平光束动画 */
@keyframes horizontal-beam_7ree {
    0% {
        transform: scaleX(0);
        opacity: 0.8;
    }
    50% {
        transform: scaleX(1);
        opacity: 0.5;
    }
    100% {
        transform: scaleX(1);
        opacity: 0;
    }
}

/* 光束元素 */
.beam-horizontal_7ree {
    position: absolute;
    height: 100%;
    width: 100%;
    background: linear-gradient(to right, 
        rgba(0, 150, 255, 0) 0%,
        rgba(11, 41, 110, 0.8) 50%,
        rgba(0, 150, 255, 0) 100%);
    transform-origin: center;
    opacity: 0;
}

/* 粒子颜色变体 */
.particle-blue_7ree {
    background-color: rgba(11, 41, 110, 0.7);
    box-shadow: 0 0 5px 1px rgba(0, 150, 255, 0.3);
    border-radius: 40%;
}

.particle-cyan_7ree {
    background-color: rgba(0, 200, 255, 0.6);
    box-shadow: 0 0 5px 1px rgba(0, 200, 255, 0.3);
    border-radius: 35%;
}

.particle-purple_7ree {
    background-color: rgba(58, 31, 93, 0.6);
    box-shadow: 0 0 5px 1px rgba(100, 50, 200, 0.3);
    border-radius: 45%;
}

.particle-white_7ree {
    background-color: rgba(200, 220, 255, 0.5);
    box-shadow: 0 0 5px 1px rgba(200, 220, 255, 0.3);
    border-radius: 30%;
}

/* 不规则形状粒子 */
.particle-triangle_7ree {
    width: 0 !important;
    height: 0 !important;
    background-color: transparent !important;
    border-left: var(--size) solid transparent;
    border-right: var(--size) solid transparent;
    border-bottom: calc(var(--size) * 1.5) solid rgba(0, 180, 255, 0.6);
    box-shadow: 0 0 8px rgba(0, 180, 255, 0.3);
    border-radius: 0;
    filter: blur(0.5px);
}

.particle-diamond_7ree {
    background-color: rgba(30, 100, 200, 0.6) !important;
    border-radius: 4px !important;
    transform: rotate(45deg);
    filter: blur(0.5px);
}

/* 中心光效元素 */
.center-glow_7ree {
    position: absolute;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 200, 255, 0.5) 0%, rgba(11, 41, 110, 0.3) 70%, transparent 100%);
    opacity: 0;
    filter: blur(3px);
}

/* 通用不可选中状态 */
.non-selectable_7ree {
    user-select: none; /* 标准语法 */
    -webkit-user-select: none; /* Safari */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* IE/Edge */
}

/* .btn_7ree:focus 的样式 */
.btn_7ree:focus {
    /* Ensure no additional visual focus styles are applied */
    /* outline is already none in the base style */
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3), inset 0 0 5px rgba(0, 200, 200, 0.2); /* Match base style */
    background-color: #2a2a2a; /* Match base style */
}