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

/* CSS变量定义*/
:root {
    --primary-color: #3498db;
    --primary-hover: #2980b9;
    --success-color: #2ecc71;
    --success-hover: #27ae60;
    --text-primary: #2c3e50;
    --text-secondary: #34495e;
    --text-muted: #7f8c8d;
    --bg-primary: #fff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #f9f9f9;
    --border-color: #ddd;
    --border-radius: 8px;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

.container {
	padding: 20px;
    max-width: 1200px;
    margin: 5px auto;
}

.upload-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: transform 0.2s, box-shadow 0.2s;
    gap: 8px;
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.description {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
    text-align: center;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

h1 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--text-primary);
    font-size: 2.2rem;
	color: #19788D;
    font-weight: 600;
}

h2 {
    margin: 20px 0 15px;
    color: var(--text-secondary);
    font-size: 1.4rem;
    font-weight: 500;
}

.upload-section {
    margin-bottom: 30px;
    text-align: center;
}

/* 文件列表样式 */
.file-list {
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 15px;
    background-color: var(--bg-tertiary);
    /* 设置默认高度和最大高度限制 */
  min-height: 100px; /* 默认高度100px */
  max-height: 300px; /* 最高限制300px */
  overflow-y: auto; /* 添加垂直滚动条 */
  line-height: 18px; /* 设置合适的行高 */
}

.file-list-empty {
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
    padding: 20px 0;
}

.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.file-item {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 15px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.file-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--box-shadow);
    transform: translateY(-2px);
}

.file-item.selected {
    border-color: var(--primary-color);
    background-color: rgba(52, 152, 219, 0.05);
}

.file-item.selected::after {
    content: '✓';
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: var(--success-color);
    color: white;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
}

.file-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 14px;
}

.file-size {
    font-size: 12px;
    color: var(--text-muted);
}

.upload-section label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 16px;
    color: var(--text-secondary);
}

.upload-section input[type="file"] {
    padding: 10px;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    background-color: var(--bg-tertiary);
}

.upload-section input[type="file"]:hover {
    border-color: var(--primary-color);
    background-color: rgba(52, 152, 219, 0.05);
}

.watermark-settings {
    margin-bottom: 30px;
    background-color: var(--bg-tertiary);
    padding: 20px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.setting-group {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    min-height: 45px;
    transition: var(--transition);
}

.setting-group:hover {
    background-color: rgba(255, 255, 255, 0.6);
    padding-left: 5px;
}

/* 设置行容器样式 - 确保上下行对齐 */
.setting-row, 
.color-position-container {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 0;
}

/* 行内设置项样式 */
.setting-row .setting-group, 
.color-position-container .setting-group {
    flex: 1;
    min-width: 200px;
    margin-bottom: 15px;
}

/* 修复水印文字和颜色在同一行显示 */
#textWatermarkGroup {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: 10px;
}

#textWatermarkGroup label {
    width: auto;
    margin-bottom: 0;
}

#textWatermarkGroup input[type="text"] {
    width: auto;
    min-width: 200px;
    flex: 1;
}

/* 修复水印位置和应用到所有图片在同一行显示 */
.setting-row .setting-group:last-child {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: 10px;
}

.setting-row .setting-group:last-child label {
    width: auto;
    margin-bottom: 0;
}

.setting-row .setting-group:last-child select {
    width: auto;
    min-width: 150px;
}

.tooltip {
    color: rgb(75, 73, 73);
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 12px;
}
.setting-group label {
    /* width: 280px; */
    font-weight: 600;
    padding-right: 5px;
    flex-shrink: 0;
    color: var(--text-secondary);
}

.setting-group input[type="text"],
.setting-group select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    width: calc(100% - 160px);
    min-width: 200px;
    font-size: 14px;
    transition: var(--transition);
}

.setting-group input[type="text"]:focus,
.setting-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}



/* 单选按钮组样式 */
.radio-group {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
}

/* 让应用于所有图片按钮与水印类型保持同一行 */
.setting-group:first-child {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: 15px;
    position: relative;
}

.setting-group:first-child > label:first-child {
    width: auto;
    margin-bottom: 0;
}

.setting-group:first-child .checkbox-label {
    display: flex;
    align-items: center;
    margin-left: 20px;
    margin-bottom: 0;
    position: relative;
}

.setting-group:first-child .checkbox-label input[type="checkbox"] {
    margin-right: 5px;
    margin-bottom: 0;
}

/* 复选框标签基础样式 */
.checkbox-label {
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    margin-bottom: 10px;
}

.checkbox-label input[type="checkbox"] {
    margin-right: 8px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

/* 优化tooltip显示方式 */
.checkbox-label .tooltip {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 100;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    max-width: 500px;
    margin-top: 5px;
    white-space: normal;
}

.checkbox-label:hover .tooltip {
    display: block;
}

/* 为checkbox-label添加相对定位，确保tooltip的绝对定位正确 */
.checkbox-label {
    position: relative;
}

/* tooltip图标的样式 */
.tooltip-icon {
    display: inline-block;
    width: 16px;
    height: 16px;
    line-height: 16px;
    text-align: center;
    background-color: #3498db;
    color: white;
    border-radius: 50%;
    font-size: 12px;
    margin-left: 5px;
    cursor: help;
    vertical-align: middle;
    font-style: normal;
}

.radio-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.radio-label:hover {
    color: var(--primary-color);
}

.radio-label input[type="radio"] {
    margin-right: 8px;
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
    border-radius: 50%;
    transition: var(--transition);
}

.radio-label span {
    user-select: none;
}


.setting-group input[type="range"] {
    flex: 1;
    margin: 0 10px;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

.setting-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.setting-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.2);
}

.setting-group input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.setting-group input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.2);
}

.setting-group input[type="color"] {
    width: 80px;
    height: 35px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.setting-group input[type="color"]:hover {
    transform: scale(1.05);
}

#previewContainer {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: var(--bg-tertiary);
    position: relative;
    margin-bottom: 20px;
    transition: var(--transition);
    max-width: 100%;
    max-height: 80vh;
    padding: 10px;
}

#previewContainer:hover {
    border-color: var(--primary-color);
}

#previewContainer img {
    max-width: 100%;
    max-height: 75vh;
    display: block;
    transition: var(--transition);
    height: auto;
    width: auto;
}

#previewContainer img:hover {
    transform: scale(1.02);
}

.manual-position-info {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    pointer-events: none;
    z-index: 10;
}

.action-buttons {
    text-align: center;
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

#downloadImage {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 140px;
}

#applyWatermark {
    background-color: var(--primary-color);
    color: white;
    position: relative;
    overflow: hidden;
}

#applyWatermark::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%, -50%);
    transform-origin: 50% 50%;
}

#applyWatermark:hover::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(100, 100);
        opacity: 0;
    }
}

#applyWatermark:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

/* 下载按钮通用样式 */
#downloadCurrentImage, #downloadAllImages {
    background-color: var(--success-color);
    color: white;
    position: relative;
    overflow: hidden;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 140px;
}

#downloadCurrentImage::after,
#downloadAllImages::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: #2a85ff;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

#downloadCurrentImage:hover:not(:disabled),
#downloadAllImages:hover:not(:disabled) {
    background-color: #f0f7ff;
    color: #2a85ff;
}

#downloadCurrentImage:hover:not(:disabled)::after,
#downloadAllImages:hover:not(:disabled)::after {
    transform: scaleX(1);
    transform-origin: left;
}

#downloadCurrentImage:disabled,
#downloadAllImages:disabled {
    background-color: #f5f5f5;
    color: #a0a0a0;
    cursor: not-allowed;
}

.watermark-text {
    position: absolute;
    color: rgba(0, 0, 0, 0.5);
    font-size: 30px;
    pointer-events: none;
    text-align: center;
    z-index: 10;
    font-weight: 600;
    text-shadow: 1px 1px 1px rgba(255, 255, 255, 0.5);
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .container {
        padding: 20px;
    }
    
    h1 {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }
    
    h2 {
        font-size: 1.2rem;
    }
    
    /* 在小屏幕上，设置行容器变为单列 */
    .setting-row, 
    .color-position-container {
        flex-direction: column;
        gap: 10px;
    }
    
    .setting-group {
        flex-direction: column;
        align-items: flex-start;
        min-height: auto;
        padding-left: 0;
    }
    
    .setting-group:hover {
        padding-left: 0;
        background-color: transparent;
    }
    
    .setting-group label {
        width: 80%;
        margin-bottom: 5px;
        font-size: 0.9rem;
    }
    
    .setting-group input[type="text"],
    .setting-group select {
        width: 95%;
        min-width: unset;
    }
    
    .setting-group input[type="range"] {
        width: 95%;
        margin: 10px 0;
    }
    
    #downloadImage {
        flex-direction: column;
        gap: 10px;
        width: 100%;
        min-width: unset;
        font-size: 14px;
        padding: 10px 20px;
    }
    
    #previewContainer {
        min-height: 300px;
    }
}