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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    min-height: 100vh;
}

header {
    text-align: center;
    padding: 20px 0;
    border-bottom: 2px solid #e0e0e0;
    margin-bottom: 30px;
}

header h1 {
    color: #2c3e50;
    font-size: 2.5rem;
}

section {
    margin-bottom: 40px;
}

section h2 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 20px;
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 10px;
}

/* 表单样式 */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 5px;
    color: #555;
}

.form-group input,
.form-group select {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.input-group {
    display: flex;
    gap: 10px;
}

.input-group select {
    flex: 1;
}

.unit {
    margin-left: 5px;
    color: #666;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 30px;
}

/* 按钮样式 */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    transition: all 0.3s ease;
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-success {
    background-color: #2ecc71;
    color: white;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 14px;
}

/* 表格样式 */
.table-container {
    overflow-x: auto;
    border: 1px solid #ddd;
    border-radius: 4px;
}

#orderTable {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
}

#orderTable th,
#orderTable td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

#orderTable th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
    position: sticky;
    top: 0;
    z-index: 10;
}

#orderTable tr:hover {
    background-color: #f5f5f5;
}

#orderTable tr:nth-child(even) {
    background-color: #f9f9f9;
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: #fefefe;
    margin: 10% auto;
    padding: 25px;
    border: 1px solid #888;
    width: 95%;
    max-width: 500px;
    border-radius: 8px;
    position: relative;
    animation: slideIn 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    transform: translateY(0);
    z-index: 10000;
}

/* 移动端弹窗优化 */
@media (max-width: 768px) {
    .modal-content {
        margin: 5% auto;
        padding: 20px;
        width: 98%;
        min-height: auto;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-group input,
    .form-group select {
        padding: 12px;
        font-size: 16px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 16px;
    }
    
    .btn-primary {
        background-color: #3498db;
        color: white;
        font-weight: 600;
    }
    
    /* 确保按钮可点击 */
    .btn {
        cursor: pointer;
        user-select: none;
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
    }
    
    /* 修复移动端输入框聚焦问题 */
    input:focus,
    select:focus,
    button:focus {
        outline: 2px solid #3498db;
        outline-offset: 2px;
    }
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 15px;
    top: 15px;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

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

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

/* 响应式设计 */
@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .container {
        padding: 10px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    section h2 {
        font-size: 1.5rem;
    }
}

/* 只读输入框样式 */
input[readonly] {
    background-color: #f5f5f5;
    cursor: not-allowed;
}

/* 操作按钮组 */
.action-buttons {
    display: flex;
    gap: 5px;
}

/* 页脚样式 */
footer {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid #e0e0e0;
    margin-top: 50px;
    color: #777;
    font-size: 14px;
}

/* 错误提示样式 */
.error {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 5px;
}

/* 成功提示样式 */
.success {
    color: #2ecc71;
    font-size: 14px;
    margin-top: 5px;
}

/* 加载状态 */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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