/* 绘画功能样式 */

/* Canvas层（在倒计时下方，z-index更低） */
#paintCanvas {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100vw;
    height: 100vh;
    z-index: 1;
    display: none;
    cursor: crosshair;
    pointer-events: none;
    background: transparent;
}

#paintCanvas.active {
    display: block;
    pointer-events: auto;
}

/* 绘画工具栏 */
.paint-toolbar {
    position: fixed;
    bottom: clamp(20px, 2.08vw, 40px); /* 40/1920=2.08% */
    left: 50%;
    transform: translateX(-50%);
    z-index: 200;
    width: auto;
    max-width: calc(100vw - 40px); /* 留出左右边距 */
    display: none;
    align-items: center;
    flex-wrap: wrap; /* 允许换行 */
    justify-content: center; /* 居中对齐 */
    gap: clamp(8px, 0.83vw, 16px); /* 减小间距以容纳更多元素 */
    padding: clamp(10px, 0.83vw, 16px) clamp(16px, 1.25vw, 24px); /* 16/1920=0.83%, 24/1920=1.25% */
    background: rgba(255, 255, 255, 0.95);
    border-radius: clamp(6px, 0.625vw, 12px); /* 12/1920=0.625% */
    box-shadow: 0 clamp(2px, 0.21vw, 4px) clamp(6px, 0.625vw, 12px) rgba(0,0,0,0.15); /* 4/1920=0.21%, 12/1920=0.625% */
    opacity: 1;
    pointer-events: auto;
    transition: opacity 0.3s ease, transform 0.3s ease; /* 平滑过渡动画 */
}

.paint-toolbar.show {
    display: flex;
}

/* 窥探模式：强制隐藏工具栏 */
body[data-peek-mode="true"] .paint-toolbar,
body.peek-mode .paint-toolbar {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

@media (prefers-color-scheme: dark) {
    .paint-toolbar {
        background: rgba(42, 42, 42, 0.95);
    }
}

/* 工具栏组件 */
.toolbar-group {
    display: flex;
    align-items: center;
    gap: clamp(6px, 0.52vw, 10px); /* 10/1920=0.52% - 减小间距 */
    flex-shrink: 0; /* 防止组内元素被压缩 */
}

.toolbar-label {
    font-family: 'Courier New', monospace;
    font-size: clamp(12px, 0.83vw, 16px); /* 16/1920=0.83% */
    color: #000;
    white-space: nowrap;
}

@media (prefers-color-scheme: dark) {
    .toolbar-label {
        color: #fff;
    }
}

/* 🆕 画笔类型选择器 */
.toolbar-select {
    padding: clamp(4px, 0.31vw, 6px) clamp(8px, 0.625vw, 12px); /* 6/1920=0.31%, 12/1920=0.625% */
    font-size: clamp(12px, 0.73vw, 14px); /* 14/1920=0.73% */
    border: clamp(1px, 0.1vw, 2px) solid #ccc; /* 2/1920=0.1% */
    border-radius: clamp(4px, 0.31vw, 6px); /* 6/1920=0.31% */
    background: white;
    color: #000;
    cursor: pointer;
    font-family: 'Courier New', monospace;
    min-width: clamp(80px, 6.25vw, 120px); /* 120/1920=6.25% */
}

.toolbar-select:focus {
    outline: none;
    border-color: #667eea;
}

@media (prefers-color-scheme: dark) {
    .toolbar-select {
        background: #2a2a2a;
        color: #fff;
        border-color: #555;
    }
}

/* 颜色选择 */
.color-swatches {
    display: flex;
    gap: clamp(8px, 0.625vw, 12px); /* 12/1920=0.625% */
    align-items: center;
}

.color-swatch {
    width: clamp(28px, 2.08vw, 40px); /* 40/1920=2.08% */
    height: clamp(28px, 2.08vw, 40px);
    border-radius: 50%;
    border: clamp(2px, 0.16vw, 3px) solid transparent; /* 3/1920=0.16% */
    cursor: pointer;
    transition: all 0.2s ease;
}

/* 桌面端hover效果（仅支持hover的设备） */
@media (hover: hover) {
    .color-swatch:hover {
        transform: scale(1.1);
    }
}

/* 移动端按压反馈（所有设备） */
.color-swatch:active {
    transform: scale(0.8);
}

.color-swatch.active {
    border-color: #000;
    transform: scale(1.15);
}

@media (prefers-color-scheme: dark) {
    .color-swatch.active {
        border-color: #fff;
    }
}

/* 🎨 彩虹色环触发器 */
.color-picker-trigger {
    position: relative; /* 为内部input提供定位基准 */
    width: clamp(28px, 2.08vw, 40px);
    height: clamp(28px, 2.08vw, 40px);
    border-radius: 50%;
    background: conic-gradient(
        from 0deg,
        #ff0000 0deg,
        #ff7f00 51.43deg,
        #ffff00 102.86deg,
        #00ff00 154.29deg,
        #0000ff 205.71deg,
        #4b0082 257.14deg,
        #9400d3 308.57deg,
        #ff0000 360deg
    );
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
    box-sizing: border-box;
    border: none; /* 默认无边框 */
    outline: none; /* 移除outline */
    pointer-events: auto; /* 确保可以接收点击事件 */
    touch-action: manipulation; /* 移动端优化：快速响应触摸 */
    overflow: hidden; /* 确保内部元素不溢出圆形 */
}

/* 桌面端hover效果（仅支持hover的设备） */
@media (hover: hover) {
    .color-picker-trigger:hover {
        transform: scale(1.15);
    }
}

/* 移动端按压反馈（所有设备） */
.color-picker-trigger:active {
    transform: scale(0.8);
}

/* 🎨 内嵌的原生取色器 - 覆盖整个父元素但视觉隐藏 */
#colorPicker {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    border: none;
    padding: 0;
    margin: 0;
    z-index: 10; /* 确保在父元素之上 */
}

/* 🖌️ 画笔图标组 */
.brush-icons {
    display: flex;
    gap: clamp(8px, 0.625vw, 12px);
    align-items: center;
}

.brush-icon {
    font-size: clamp(20px, 1.67vw, 32px);
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
    opacity: 0.5;
}

/* 桌面端hover效果（仅支持hover的设备） */
@media (hover: hover) {
    .brush-icon:hover {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

.brush-icon.active {
    opacity: 1;
    transform: scale(1.5); /* 选中放大150% */
}

/* 移动端按压反馈（所有设备，但不影响已选中状态） */
.brush-icon:not(.active):active {
    opacity: 0.8;
    transform: scale(0.8);
}

/* ✏️ 铅笔镜像翻转 */
.pencil-flip {
    display: inline-block;
    transform: scaleX(-1);
}

/* 滑块 */
.toolbar-slider {
    width: clamp(60px, 5.21vw, 100px); /* 100/1920=5.21% */
    height: clamp(4px, 0.31vw, 6px); /* 6/1920=0.31% */
    -webkit-appearance: none;
    appearance: none;
    background: #ddd;
    border-radius: clamp(2px, 0.16vw, 3px); /* 3/1920=0.16% */
    outline: none;
}

.toolbar-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: clamp(12px, 0.83vw, 16px); /* 16/1920=0.83% */
    height: clamp(12px, 0.83vw, 16px);
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
}

.toolbar-slider::-moz-range-thumb {
    width: clamp(12px, 0.83vw, 16px);
    height: clamp(12px, 0.83vw, 16px);
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
    border: none;
}

@media (prefers-color-scheme: dark) {
    .toolbar-slider {
        background: #555;
    }
    .toolbar-slider::-webkit-slider-thumb {
        background: #fff;
    }
    .toolbar-slider::-moz-range-thumb {
        background: #fff;
    }
}

.toolbar-value {
    font-family: 'Courier New', monospace;
    font-size: clamp(12px, 0.83vw, 16px); /* 16/1920=0.83% */
    color: #000;
    min-width: clamp(24px, 1.67vw, 32px); /* 32/1920=1.67% */
    text-align: center;
}

@media (prefers-color-scheme: dark) {
    .toolbar-value {
        color: #fff;
    }
}

/* 工具栏按钮 */
.toolbar-btn {
    padding: clamp(6px, 0.42vw, 8px) clamp(10px, 0.83vw, 16px); /* 8/1920=0.42%, 16/1920=0.83% */
    font-family: 'Courier New', monospace;
    font-size: clamp(12px, 0.83vw, 16px); /* 16/1920=0.83% */
    background: url('/images/button/button_s.svg') center center no-repeat;
    background-size: 100% 100%;
    border: none;
    cursor: pointer;
    color: #000;
    transition: transform 0.2s ease;
    min-width: 80px; /* 固定最小宽度，不再缩小 */
    height: 40px; /* 固定高度，不再缩小 */
}

/* 暗色模式下绘画工具栏按钮使用夜间素材，文本白色 */
@media (prefers-color-scheme: dark) {
    .toolbar-btn {
        background-image: url('/images/button/button_s_night.svg');
        color: #fff;
    }
}

/* 桌面端hover效果（仅支持hover的设备） */
@media (hover: hover) {
    .toolbar-btn:hover {
        transform: scale(1.15);
    }
}

/* 移动端按压反馈（所有设备） */
.toolbar-btn:active {
    transform: scale(0.8);
}

.toolbar-btn.eraser {
    background: url('/images/button/button_s_bg.svg') center center no-repeat;
    background-size: 100% 100%;
}

.toolbar-btn.eraser.active {
    background: url('/images/button/selected.svg') center center no-repeat;
    background-size: 100% 100%;
}


/* 响应式布局优化 - 三组换行：颜色组、画笔组、按钮组 */
@media (max-width: 900px) {
    .paint-toolbar {
        flex-wrap: wrap;
        justify-content: center;
        gap: clamp(12px, 1.5vw, 18px); /* 行间距加大50% */
    }
    
    /* 确保按钮组不换行 */
    .toolbar-btn {
        flex-shrink: 0;
    }
}

/* 移动端优化 - 放大元素尺寸以便操作 */
@media (max-width: 768px) {
    .paint-toolbar {
        gap: clamp(12px, 3vw, 20px);
        padding: clamp(16px, 4vw, 24px) clamp(20px, 5vw, 32px);
        max-width: calc(100vw - 20px);
        bottom: clamp(15px, 3vw, 30px);
    }
    
    .toolbar-group {
        gap: clamp(10px, 2.5vw, 16px);
    }
    
    /* 颜色色块放大到可点击尺寸 */
    .color-swatches {
        gap: clamp(10px, 2.5vw, 14px);
    }
    
    .color-swatch {
        width: clamp(36px, 9vw, 48px); /* 放大到至少36px */
        height: clamp(36px, 9vw, 48px);
        border-width: clamp(3px, 0.7vw, 4px);
    }
    
    .color-picker-trigger {
        width: clamp(36px, 9vw, 48px);
        height: clamp(36px, 9vw, 48px);
    }
    
    /* 画笔图标放大 */
    .brush-icons {
        gap: clamp(12px, 3vw, 18px);
    }
    
    .brush-icon {
        font-size: clamp(28px, 7vw, 40px); /* 放大图标 */
    }
    
    /* 标签文字放大 */
    .toolbar-label {
        font-size: clamp(14px, 3.5vw, 18px);
    }
    
    /* 滑块放大 */
    .toolbar-slider {
        width: clamp(80px, 20vw, 120px);
        height: clamp(6px, 1.5vw, 8px);
    }
    
    .toolbar-slider::-webkit-slider-thumb {
        width: clamp(18px, 4.5vw, 24px);
        height: clamp(18px, 4.5vw, 24px);
    }
    
    .toolbar-slider::-moz-range-thumb {
        width: clamp(18px, 4.5vw, 24px);
        height: clamp(18px, 4.5vw, 24px);
    }
    
    /* 按钮保持固定大小，不缩小 */
    .toolbar-btn {
        min-width: 80px !important; /* 固定宽度 */
        height: 40px !important; /* 固定高度 */
        font-size: 16px !important; /* 固定字号 */
        padding: 8px 16px !important; /* 固定内边距 */
    }
    
    .toolbar-value {
        font-size: clamp(14px, 3.5vw, 18px);
        min-width: clamp(28px, 7vw, 36px);
    }
}

/* 小屏幕进一步优化 */
@media (max-width: 480px) {
    .paint-toolbar {
        bottom: clamp(10px, 2vw, 20px);
        gap: clamp(12px, 1.8vw, 18px); /* 保持加大后的间距 */
        padding: clamp(12px, 1.8vw, 15px) clamp(15px, 2.7vw, 21px);
    }
    
    .toolbar-label {
        font-size: clamp(10px, 2.5vw, 14px);
    }
    
    /* 按钮保持固定大小，即使在小屏幕也不缩小 */
    .toolbar-btn {
        min-width: 80px !important;
        height: 40px !important;
        font-size: 16px !important;
        padding: 8px 16px !important;
    }
}