/* 提前还款计算器样式 */

/* 表单布局优化 */
.form-section {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.form-section h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
}

/* 输入字段组 */
.input-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

/* 贷款信息卡片 */
.loan-info-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

.loan-info-card h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.loan-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.loan-info-item {
    text-align: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.loan-info-label {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.loan-info-value {
    font-size: 1.2rem;
    font-weight: 600;
}

/* 还款方式选择 */
.repayment-type-section {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.repayment-type-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.repayment-type-card {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--surface-color);
}

.repayment-type-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.repayment-type-card.selected {
    border-color: var(--success-color);
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
}

.repayment-type-card input[type="radio"] {
    display: none;
}

.repayment-type-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.repayment-type-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.repayment-type-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 提前还款方式选择 */
.prepayment-method-section {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.prepayment-method-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.prepayment-method-card {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--surface-color);
}

.prepayment-method-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.prepayment-method-card.selected {
    border-color: var(--warning-color);
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
}

.prepayment-method-card input[type="radio"] {
    display: none;
}

.prepayment-method-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.prepayment-method-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.prepayment-method-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 计算结果样式 */
.result-section {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.result-title {
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-align: center;
    position: relative;
}

.result-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

/* 结果网格 */
.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.result-item {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.result-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.result-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.result-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* 节省利息特殊样式 */
.result-item.savings {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-color: var(--success-color);
}

.result-item.savings .result-value {
    color: var(--success-color);
}

/* 对比表格样式 */
.table-container {
    overflow-x: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface-color);
    font-size: 0.9rem;
}

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

.result-table th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: 600;
    position: sticky;
    top: 0;
}

.result-table tr:hover {
    background: var(--background-color);
}

.result-table td:first-child {
    font-weight: 600;
    color: var(--primary-color);
}

/* 节省金额列特殊样式 */
.result-table td:last-child {
    color: var(--success-color);
    font-weight: 600;
}

/* 按钮样式优化 */
.calculate-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
}

.calculate-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.export-btn {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.export-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 信息提示 */
.info-tips {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    border: 1px solid #3b82f6;
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 2rem;
}

.info-tips h4 {
    color: #1e40af;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.info-tips ul {
    margin: 0;
    padding-left: 1.5rem;
    color: #1e40af;
}

.info-tips li {
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .input-group {
        grid-template-columns: 1fr;
    }
    
    .loan-info-grid {
        grid-template-columns: 1fr;
    }
    
    .repayment-type-grid {
        grid-template-columns: 1fr;
    }
    
    .prepayment-method-grid {
        grid-template-columns: 1fr;
    }
    
    .result-grid {
        grid-template-columns: 1fr;
    }
    
    .calculate-actions {
        flex-direction: column;
    }
    
    .result-table {
        font-size: 0.8rem;
    }
    
    .result-table th,
    .result-table td {
        padding: 0.5rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-section {
    animation: fadeInUp 0.5s ease-out;
}

/* 加载状态 */
.loading-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* 错误状态 */
.error-state {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border: 1px solid var(--error-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1rem;
    color: var(--error-color);
    text-align: center;
}

/* 成功状态 */
.success-state {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border: 1px solid var(--success-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1rem;
    color: var(--success-color);
    text-align: center;
}