/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 头部样式 */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
    border-bottom: 1px solid #eee;
}

header h1 {
    color: #1a73e8;
    font-size: 28px;
    margin-bottom: 10px;
}

header p {
    color: #666;
}

/* 计算器容器 */
#calculator {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 25px;
    margin-bottom: 30px;
}

/* 步骤导航 */
.step-nav {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    overflow-x: auto;
    padding-bottom: 10px;
}

.step {
    flex: 1;
    text-align: center;
    padding: 10px 5px;
    margin: 0 5px;
    border-radius: 5px;
    background-color: #f1f3f4;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
    white-space: nowrap;
}

.step.active {
    background-color: #1a73e8;
    color: #fff;
}

.step.completed {
    background-color: #34a853;
    color: #fff;
}

/* 表单样式 */
.form-step {
    margin-bottom: 20px;
}

.form-step h2 {
    margin-bottom: 20px;
    color: #1a73e8;
    font-size: 20px;
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

input, select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border 0.3s;
}

input:focus, select:focus {
    border-color: #1a73e8;
    outline: none;
}

.hint {
    font-size: 13px;
    color: #666;
    margin-top: 5px;
}

/* 错误提示样式 */
.error {
    border-color: #ea4335 !important;
}

.error-message {
    color: #ea4335;
    font-size: 13px;
    margin-top: 5px;
}

/* 按钮样式 */
.btn-group {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.next-btn, .calculate-btn {
    background-color: #1a73e8;
    color: white;
}

.next-btn:hover, .calculate-btn:hover {
    background-color: #0d65d9;
}

.prev-btn {
    background-color: #f1f3f4;
    color: #333;
}

.prev-btn:hover {
    background-color: #e2e2e2;
}

.export-btn {
    background-color: #34a853;
    color: white;
}

.export-btn:hover {
    background-color: #2d9249;
}

.recalculate-btn {
    background-color: #f1f3f4;
    color: #333;
}

.recalculate-btn:hover {
    background-color: #e2e2e2;
}

/* 结果展示区域 */
#result-container {
    margin-bottom: 30px;
    padding: 20px;
    border: 1px solid #eee;
    border-radius: 8px;
    background-color: #f9f9f9;
}

.result-info {
    margin-bottom: 15px;
}

.result-info p {
    margin-bottom: 5px;
}

/* 结果表格样式 */
.result-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.result-table th, .result-table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.result-table th {
    background-color: #f1f3f4;
    font-weight: 600;
}

.result-table .subtotal-row {
    background-color: #f1f3f4;
    font-weight: 500;
}

.result-table .total-row {
    background-color: #e8f0fe;
    font-weight: 700;
    font-size: 18px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    border-bottom: 1px dashed #eee;
    padding-bottom: 10px;
}

.result-item.total {
    font-weight: bold;
    border-bottom: none;
    padding-top: 15px;
    margin-top: 10px;
    border-top: 2px solid #ccc;
}

.result-label {
    color: #666;
}

.result-value {
    font-weight: 500;
}

.export-section {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

/* 页脚样式 */
footer {
    text-align: center;
    color: #999;
    font-size: 14px;
    padding: 20px 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    #calculator {
        padding: 15px;
    }
    
    .step {
        font-size: 12px;
        padding: 8px 3px;
    }
    
    .btn {
        padding: 10px 15px;
    }
    
    header h1 {
        font-size: 24px;
    }
    
    .form-step h2 {
        font-size: 18px;
    }
    
    .result-table .total-row {
        font-size: 16px;
    }
}