:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #7209b7;
    --success: #06d6a0;
    --danger: #ef476f;
    --warning: #ffd166;
    --light: #f8f9fa;
    --dark: #212529;
    --gray: #6c757d;
    --light-gray: #e9ecef;
    --border-radius: 12px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    color: var(--dark);
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
}

#app {
    max-width: 1400px;
    margin: 0 auto;
}

/* 标题区域 */
.main-title-area {
    text-align: center;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.main-title-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.main-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 0.8rem;
}

.main-logo {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(67, 97, 238, 0.3);
}

.main-title span {
    font-size: 2.2rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.main-desc {
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

.main-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(67, 97, 238, 0.3), transparent);
    margin: 1.5rem auto;
    width: 80%;
}

/* 主布局 */
.main-layout {
    display: flex;
    gap: 2.5rem;
    margin-bottom: 2rem;
}

.left-panel,
.right-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* 上传区域 */
.upload-card {
    padding: 1.8rem;
}

.drop-area {
    border: 2px dashed rgba(67, 97, 238, 0.3);
    border-radius: var(--border-radius);
    background: rgba(67, 97, 238, 0.03);
    padding: 2.5rem 2rem;
    text-align: center;
    color: var(--primary);
    font-size: 1.15rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.drop-area:hover {
    border-color: var(--primary);
    background: rgba(67, 97, 238, 0.08);
}

.drop-area.highlight {
    border-color: var(--primary);
    background: rgba(67, 97, 238, 0.1);
}

.file-input {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.upload-icon {
    font-size: 3.5rem;
    color: var(--primary);
}

.file-types {
    color: var(--gray);
    font-size: 0.9rem;
    margin-top: 10px;
}

.file-preview {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.preview-thumb {
    width: 100%;
    max-height: 180px;
    object-fit: contain;
    border-radius: 8px;
    border: 1px solid var(--light-gray);
}

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

.file-name {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--dark);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.remove-btn {
    background: none;
    border: 1px solid var(--danger);
    color: var(--danger);
    border-radius: 6px;
    padding: 6px 15px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.remove-btn:hover {
    background: rgba(239, 71, 111, 0.1);
}

/* 参数设置 */
.params-card {
    padding: 1.8rem;
}

.params-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.params-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--dark);
}

.reset-btn {
    background: var(--light-gray);
    border: none;
    border-radius: 6px;
    padding: 8px 16px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

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

.params-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.params-group {
    padding: 1.2rem;
    background: rgba(248, 249, 250, 0.5);
    border-radius: 10px;
}

.params-group h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 1rem;
    color: var(--primary);
    font-size: 1.1rem;
}

.form-group {
    display: flex;
    align-items: center;
    margin-bottom: 0.9rem;
}

.form-group label {
    min-width: 150px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--dark);
    font-size: 0.98rem;
}

.form-group label i {
    width: 20px;
    color: var(--primary);
}

.form-group input[type='number'],
.form-group select {
    flex: 1;
    max-width: 180px;
    border: 1px solid var(--light-gray);
    border-radius: 8px;
    padding: 0.6rem 0.8rem;
    font-size: 1rem;
    background: white;
    transition: var(--transition);
}

.form-group input[type='number']:focus,
.form-group select:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

.recommend-btn {
    margin-left: 10px;
    background: var(--success);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 0.6rem 1rem;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
}

.recommend-btn:hover {
    background: #05b98c;
}

.recommend-btn:disabled {
    background: #a1dcc8;
    cursor: not-allowed;
}

.checkbox-group {
    flex-wrap: wrap;
    gap: 15px;
}

.checkbox-group label {
    min-width: auto;
    background: white;
    padding: 0.6rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--light-gray);
    transition: var(--transition);
}

.checkbox-group label:hover {
    border-color: var(--primary);
}

.checkbox-group input[type='checkbox'] {
    margin-right: 6px;
    accent-color: var(--primary);
}

.confirm-btn {
    margin-top: 0.5rem;
    padding: 0.9rem;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.confirm-btn:hover {
    background: linear-gradient(90deg, var(--primary-dark), #651e9e);
    transform: translateY(-2px);
}

.confirm-btn:disabled {
    background: #b0b7d6;
    cursor: not-allowed;
    transform: none;
}

/* 预览区域 */
.preview-block {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    padding: 1.8rem;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.preview-block h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1.2rem;
    font-size: 1.3rem;
    color: var(--dark);
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--light-gray);
}

.preview-img-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light);
    border-radius: 8px;
    min-height: 300px;
    overflow: hidden;
    position: relative;
}

.preview-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.preview-img-container:hover .preview-img {
    transform: scale(1.02);
}

.empty-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    color: var(--gray);
    font-size: 1.1rem;
}

.empty-preview i {
    font-size: 3.5rem;
    opacity: 0.5;
}

.download-btn {
    margin-top: 1.2rem;
    padding: 0.8rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

/* 处理状态 */
.processing {
    margin-top: 1.5rem;
    padding: 1.2rem;
    background: rgba(6, 214, 160, 0.1);
    border-radius: 8px;
    color: var(--dark);
    text-align: center;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.processing i {
    animation: spin 1s linear infinite;
}

.error {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(239, 71, 111, 0.1);
    border-radius: 8px;
    color: var(--danger);
    text-align: center;
    font-size: 1rem;
}

/* 页脚 */
.footer {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 1.8rem;
    text-align: center;
    margin-top: 2rem;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    color: var(--gray);
    font-size: 0.95rem;
}

.tip {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(67, 97, 238, 0.05);
    border-radius: 8px;
    color: var(--primary);
    font-weight: 500;
}

.icp-info {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--gray);
}

.icp-info a {
    color: var(--gray);
    text-decoration: none;
    transition: var(--transition);
}

.icp-info a:hover {
    color: var(--primary);
    text-decoration: underline;
}

/* 动画 */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

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

    to {
        opacity: 1;
        transform: none;
    }
}

/* 响应式布局 */
@media (max-width: 1100px) {
    .main-layout {
        flex-direction: column;
        gap: 1.8rem;
    }

    .left-panel,
    .right-panel {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .main-title span {
        font-size: 1.8rem;
    }

    .main-desc {
        font-size: 1rem;
    }

    .form-group {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .form-group label {
        min-width: auto;
        margin-bottom: 5px;
    }

    .form-group input[type='number'],
    .form-group select {
        max-width: 100%;
        width: 100%;
    }

    .recommend-btn {
        margin-left: 0;
        margin-top: 10px;
        width: 100%;
    }

    .checkbox-group {
        flex-direction: column;
        align-items: flex-start;
    }

    .preview-img-container {
        min-height: 250px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .main-title-area {
        padding: 1.2rem 1rem;
    }

    .main-title {
        flex-direction: column;
        gap: 10px;
    }

    .card {
        padding: 1.3rem;
    }

    .drop-area {
        padding: 1.5rem;
    }

    .preview-block {
        padding: 1.3rem;
    }
}