/* 计算器通用样式 */

.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 40px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 28px;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 14px;
    opacity: 0.9;
}

.calculator-container {
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
}

.calculator-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    overflow: hidden;
}

.calculator-form {
    padding: 30px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group label .required {
    color: #e74c3c;
    margin-left: 3px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e6ed;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: #fff;
}

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

.form-control::placeholder {
    color: #a0aec0;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-hint {
    font-size: 12px;
    color: #718096;
    margin-top: 6px;
}

.form-unit {
    position: relative;
}

.form-unit .form-control {
    padding-right: 50px;
}

.form-unit .unit {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #718096;
    font-size: 14px;
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23718096' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.btn-calculate {
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.btn-calculate:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-calculate:active {
    transform: translateY(0);
}

/* 计算结果区域 */
.result-section {
    background: #f8fafc;
    border-top: 1px solid #e0e6ed;
    padding: 30px;
}

.result-title {
    font-size: 16px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-box {
    background: #fff;
    border-radius: 10px;
    padding: 24px;
    border: 2px solid #e0e6ed;
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px dashed #e0e6ed;
}

.result-row:last-child {
    border-bottom: none;
}

.result-label {
    color: #718096;
    font-size: 14px;
}

.result-value {
    font-weight: 700;
    font-size: 18px;
    color: #2c3e50;
}

.result-value.highlight {
    color: #e74c3c;
    font-size: 24px;
}

/* 法律依据区域 */
.legal-basis {
    background: #fff;
    border-radius: 10px;
    padding: 24px;
    margin-top: 24px;
    border: 2px solid #e0e6ed;
}

.legal-basis h3 {
    font-size: 16px;
    color: #2c3e50;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.legal-basis ul {
    list-style: none;
    padding: 0;
}

.legal-basis li {
    padding: 8px 0;
    font-size: 14px;
    color: #4a5568;
    line-height: 1.6;
    position: relative;
    padding-left: 20px;
}

.legal-basis li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

/* 空结果状态 */
.result-empty {
    text-align: center;
    padding: 40px;
    color: #a0aec0;
}

.result-empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* 响应式 */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        padding: 30px 0;
    }
    
    .page-header h1 {
        font-size: 22px;
    }
    
    .calculator-form {
        padding: 20px;
    }
    
    .result-section {
        padding: 20px;
    }
}