/* 定义与索引页面一致的颜色变量 */
:root {
    --primary-color: #3b82f6;   /* 蓝色 */
    --primary-dark: #2563eb;    /* 深蓝色 */
    --secondary-color: #1e40af; /* 更深的蓝色 */
    --accent-color: #4f46e5;    /* 紫色强调色 */
    --text-color: #1f2937;      /* 主要文本颜色 */
    --light-gray: #f3f4f6;      /* 浅灰色背景 */
    --border-color: #e5e7eb;    /* 边框颜色 */
}

.tool-panel {
    max-width: 800px;
    margin: 2rem auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.upload-area {
    border: 2px dashed #ddd;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
    margin: 2rem 0;
    cursor: pointer;
    margin-bottom: 20px;
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.1);
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: var(--light-gray);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #666;
}

.upload-content i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.upload-btn {
    margin-top: 15px;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.upload-btn:hover {
    background-color: var(--primary-dark);
}

.preview-area {
    margin-top: 20px;
    text-align: center;
}

.preview-area img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 4px;
}

#previewImage {
    max-width: 100%;
    max-height: 500px;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.tool-options {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    justify-content: center;
}

.tool-btn {
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.tool-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

.tool-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.tool-btn.small {
    padding: 8px 15px;
    font-size: 0.9em;
}

.image-options {
    margin-top: 2rem;
}

.image-preview {
    text-align: center;
    margin-bottom: 2rem;
}

.image-preview img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 4px;
}

.control-panel {
    display: grid;
    gap: 1.5rem;
}

.control-group {
    display: grid;
    gap: 0.5rem;
}

.size-inputs {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.size-inputs input {
    width: 100px;
    padding: 0.5rem;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
}

.primary-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background 0.3s;
}

.primary-button:hover {
    background: var(--secondary-color);
}

select, input[type="range"] {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
}

/* 图片编辑面板样式 */
.image-edit-panel {
    margin-top: 25px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.edit-section {
    margin-bottom: 25px;
}

.edit-section h3 {
    font-size: 1.1em;
    margin-bottom: 15px;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.slider-control {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
}

.slider-control label {
    width: 80px;
    flex-shrink: 0;
}

.slider {
    flex-grow: 1;
    margin: 0 10px;
    accent-color: var(--primary-color);
}

.slider-value {
    width: 40px;
    text-align: right;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
}

.filter-btn {
    background-color: #f0f0f0;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 8px 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover {
    background-color: #e0e0e0;
}

.filter-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.resize-controls, .transform-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 5px;
}

.input-group label {
    min-width: 50px;
}

.input-group input[type="number"] {
    width: 80px;
    padding: 6px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.input-group input[type="number"]:focus {
    border-color: var(--primary-color);
    outline: none;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-left: 10px;
}

.checkbox-group input[type="checkbox"] {
    accent-color: var(--primary-color);
}

.format-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
}

#formatSelect {
    padding: 8px 15px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

#formatSelect:focus {
    border-color: var(--primary-color);
    outline: none;
}

.quality-control {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-grow: 1;
}

/* 为按钮添加更精致的设计 */
.tool-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.tool-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

.tool-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .resize-controls, .transform-controls, .format-controls {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .input-group {
        width: 100%;
    }
    
    .checkbox-group {
        margin-left: 0;
        margin-top: 10px;
    }
    
    .quality-control {
        width: 100%;
        margin-top: 10px;
    }
}

/* 页脚和版权信息样式 */
.footer {
    margin-top: 40px;
    padding: 20px 0;
    background-color: var(--light-gray);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer .container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.copyright {
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 8px;
}

.disclaimer {
    font-size: 0.8rem;
    color: #666;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .footer {
        padding: 15px 0;
    }
    
    .copyright, .disclaimer {
        font-size: 0.8rem;
    }
}