/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部样式 */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 20px 30px;
    margin-bottom: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo i {
    font-size: 28px;
    color: #667eea;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: #333;
    margin: 0;
}

.header-actions {
    display: flex;
    gap: 12px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    background: #f8f9fa;
    color: #333;
    border: 1px solid #e9ecef;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a6fd8, #6a4190);
}

.btn-secondary {
    background: #6c757d;
    color: white;
    border: none;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-danger {
    background: #dc3545;
    color: white;
    border: none;
}

.btn-danger:hover {
    background: #c82333;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* 主要内容区域 */
.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    flex: 1;
}

/* 输入区域 */
.input-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.input-tabs {
    display: flex;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.tab-btn {
    flex: 1;
    padding: 15px 20px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: #6c757d;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.tab-btn:hover {
    background: #e9ecef;
    color: #495057;
}

.tab-btn.active {
    background: white;
    color: #667eea;
    border-bottom: 2px solid #667eea;
}

.tab-content {
    display: none;
    padding: 20px;
}

.tab-content.active {
    display: block;
}

/* 代码编辑器 */
.code-editor-container {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e9ecef;
}

.editor-title {
    font-weight: 600;
    color: #333;
}

.editor-actions {
    display: flex;
    gap: 8px;
}

#htmlCode {
    flex: 1;
    min-height: 400px;
    padding: 15px;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 14px;
    line-height: 1.5;
    resize: vertical;
    background: #f8f9fa;
    color: #333;
    transition: border-color 0.3s ease;
}

#htmlCode:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* 文件上传区域 */
.upload-container {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.upload-area {
    border: 2px dashed #dee2e6;
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background: #f8f9fa;
}

.upload-area:hover {
    border-color: #667eea;
    background: #f0f2ff;
}

.upload-area.dragover {
    border-color: #667eea;
    background: #e8f0ff;
    transform: scale(1.02);
}

.upload-content i {
    font-size: 48px;
    color: #6c757d;
    margin-bottom: 16px;
}

.upload-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.upload-content p {
    color: #6c757d;
    margin-bottom: 20px;
}

.upload-info {
    margin-top: 20px;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background: #e8f5e8;
    border-radius: 8px;
    border: 1px solid #c3e6c3;
}

.file-info i {
    color: #28a745;
    font-size: 18px;
}

/* 预览区域 */
.preview-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    flex-direction: column;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.preview-title {
    font-weight: 600;
    color: #333;
    display: flex;
    align-items: center;
    gap: 8px;
}

.preview-actions {
    display: flex;
    gap: 8px;
}

.preview-container {
    flex: 1;
    position: relative;
    background: white;
}

#previewFrame {
    width: 100%;
    height: 100%;
    border: none;
    background: white;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 90%;
    max-height: 90%;
    overflow: hidden;
    animation: slideIn 0.3s ease;
}

.modal-content.fullscreen {
    width: 95%;
    height: 95%;
    max-width: none;
    max-height: none;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #e9ecef;
    background: #f8f9fa;
}

.modal-header h3 {
    font-weight: 600;
    color: #333;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #6c757d;
    padding: 5px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: #e9ecef;
    color: #333;
}

.modal-body {
    padding: 20px;
    max-height: 60vh;
    overflow-y: auto;
}

.modal-content.fullscreen .modal-body {
    height: calc(100% - 80px);
    padding: 0;
}

.modal-content.fullscreen #fullscreenFrame {
    width: 100%;
    height: 100%;
    border: none;
}

/* 模板网格 */
.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.template-item {
    padding: 20px;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.template-item:hover {
    border-color: #667eea;
    background: #f0f2ff;
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.2);
}

.template-preview {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.template-item h4 {
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.template-item p {
    color: #6c757d;
    font-size: 14px;
}

/* 通知样式 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 1001;
    transform: translateX(400px);
    transition: transform 0.3s ease;
    max-width: 300px;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    background: #28a745;
}

.notification.error {
    background: #dc3545;
}

.notification.info {
    background: #17a2b8;
}

/* 动画 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .container {
        padding: 15px;
    }
    
    .header {
        padding: 15px 20px;
    }
    
    .logo h1 {
        font-size: 20px;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .header-actions {
        width: 100%;
        justify-content: center;
    }
    
    .input-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        padding: 12px 15px;
    }
    
    .preview-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .template-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 20px;
        max-width: calc(100% - 40px);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    .header {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .tab-content {
        padding: 15px;
    }
    
    #htmlCode {
        min-height: 300px;
        font-size: 13px;
    }
    
    .upload-area {
        padding: 30px 15px;
    }
    
    .upload-content i {
        font-size: 36px;
    }
    
    .upload-content h3 {
        font-size: 16px;
    }
}