/* 全局样式 */
:root {
    --primary-color: #4a6cf7;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-color: #dee2e6;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式 */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 20px 0;
    text-align: center;
    box-shadow: var(--shadow);
}

header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 主内容区域 */
main {
    padding: 30px 0;
}

.editor-container {
    display: grid;
    grid-template-columns: 300px 1fr 250px;
    gap: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

/* 工具面板 */
.tools-panel {
    background-color: #f8f9fa;
    padding: 20px;
    border-right: 1px solid var(--border-color);
}

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

.tool-section h3 {
    font-size: 1rem;
    margin-bottom: 12px;
    color: var(--dark-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

/* 上传区域 */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 6px;
    padding: 20px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

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

.upload-button {
    display: block;
    padding: 15px;
    background-color: #f1f3f5;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.upload-button:hover {
    background-color: #e9ecef;
}

.upload-button i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    display: block;
}

.upload-tip {
    margin-top: 10px;
    font-size: 0.8rem;
    color: var(--secondary-color);
}

/* 选择框样式 */
.select-style {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: white;
    font-size: 0.9rem;
    cursor: pointer;
}

/* 颜色选择 */
.color-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.color-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.color-btn:hover, .color-btn.active {
    transform: scale(1.1);
    border-color: var(--primary-color);
}

/* 调整控件 */
.adjustment-controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.control-group label {
    font-size: 0.9rem;
    color: var(--dark-color);
}

input[type="range"] {
    width: 100%;
    cursor: pointer;
}

/* 预览面板 */
.preview-panel {
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.preview-container {
    width: 100%;
    height: 400px;
    background-color: #f8f9fa;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    overflow: hidden;
}

#previewCanvas {
    max-width: 100%;
    max-height: 100%;
    display: block;
}

.preview-controls {
    display: flex;
    gap: 15px;
}

/* 信息面板 */
.info-panel {
    background-color: #f8f9fa;
    padding: 20px;
    border-left: 1px solid var(--border-color);
}

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

.reference-image {
    width: 100%;
    border-radius: 4px;
    margin-bottom: 15px;
}

.reference-tips {
    padding-left: 20px;
    font-size: 0.9rem;
    color: var(--secondary-color);
}

.reference-tips li {
    margin-bottom: 8px;
}

/* 尺寸表格 */
.size-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.size-table th, .size-table td {
    border: 1px solid var(--border-color);
    padding: 8px;
    text-align: center;
}

.size-table th {
    background-color: #e9ecef;
}

/* 按钮样式 */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: #e9ecef;
    color: var(--dark-color);
}

.btn:hover {
    background-color: #dee2e6;
}

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

.btn-primary:hover {
    background-color: #3a5bd9;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* 页脚 */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 20px 0;
    text-align: center;
    margin-top: 30px;
}

footer p {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .editor-container {
        grid-template-columns: 250px 1fr;
    }
    
    .info-panel {
        grid-column: span 2;
        border-left: none;
        border-top: 1px solid var(--border-color);
    }
}

@media (max-width: 768px) {
    .editor-container {
        grid-template-columns: 1fr;
    }
    
    .tools-panel, .info-panel {
        grid-column: span 1;
        border: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .preview-container {
        height: 300px;
    }
}

/* 拖拽状态 */
.drag-over {
    border-color: var(--primary-color);
    background-color: rgba(74, 108, 247, 0.05);
}

/* 加载状态 */
.loading {
    position: relative;
}

.loading::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.loading::before {
    content: "\f110";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    font-size: 2rem;
    color: var(--primary-color);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}