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

body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 主色调定义 */
:root {
    --primary-blue: #1a73e8;
    --secondary-blue: #4285f4;
    --dark-blue: #0d47a1;
    --light-blue: #e8f0fe;
}

/* 头部样式 */
.main-header {
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    padding: 0 20px;
}

.school-logo {
    height: 80px;
    margin-right: 20px;
    border-radius: 4px;
}

.school-info h1 {
    font-size: 28px;
    margin-bottom: 5px;
    font-weight: 500;
}

.school-info p {
    font-size: 16px;
    opacity: 0.9;
}

/* 主容器样式 */
.container {
    max-width: 1000px;
    margin: 30px auto;
    padding: 0 20px;
}

.form-container {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
}

.form-container h2 {
    color: var(--primary-blue);
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--light-blue);
    font-size: 24px;
}

/* 表单样式 */
.registration-form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.form-group input[type="text"],
.form-group input[type="tel"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border 0.3s;
}

.form-group input:focus {
    border-color: var(--primary-blue);
    outline: none;
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

/* 单选按钮样式 */
.radio-group {
    display: flex;
    gap: 25px;
    margin-top: 10px;
}

.radio-option {
    display: flex;
    align-items: center;
    cursor: pointer;
    position: relative;
    padding-left: 30px;
}

.radio-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-custom {
    position: absolute;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: white;
    border: 2px solid #ccc;
    border-radius: 50%;
    transition: all 0.3s;
}

.radio-option:hover .radio-custom {
    border-color: var(--primary-blue);
}

.radio-option input:checked ~ .radio-custom {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.radio-custom:after {
    content: "";
    position: absolute;
    display: none;
    top: 4px;
    left: 4px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
}

.radio-option input:checked ~ .radio-custom:after {
    display: block;
}

.radio-label {
    margin-left: 8px;
    font-weight: normal;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: white;
}

.btn-primary:hover {
    background-color: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* 提示信息样式 */
.alert {
    padding: 15px;
    margin-bottom: 25px;
    border-radius: 4px;
    font-size: 15px;
}

.alert-danger {
    background-color: #fdecea;
    color: #d32f2f;
    border-left: 4px solid #d32f2f;
}

/* 页脚样式 */
.main-footer {
    text-align: center;
    padding: 20px;
    margin-top: 50px;
    color: #666;
    font-size: 14px;
    border-top: 1px solid #eee;
}

.admin-link a {
    color: var(--primary-blue);
    text-decoration: none;
}

.admin-link a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .school-logo {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .form-container {
        padding: 20px;
    }
    
    .radio-group {
        flex-direction: column;
        gap: 10px;
    }
}

/* 管理员导航 */
.admin-nav {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.admin-nav a {
    text-decoration: none;
    color: #3498db;
    padding: 5px 10px;
    border-radius: 4px;
}

.admin-nav a:hover {
    background: #f0f0f0;
}

.admin-nav a.active {
    background: #3498db;
    color: white;
}

/* 统计卡片 */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.stat-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #6c757d;
}

.stat-card p {
    font-size: 24px;
    font-weight: bold;
    color: #2c3e50;
}

/* 数据表格 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.data-table th,
.data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.data-table th {
    background: #f8f9fa;
    font-weight: bold;
}

.data-table tr:hover {
    background: #f5f5f5;
}

/* 成功页面 */
.success-message {
    text-align: center;
    padding: 40px 20px;
}

.success-message p {
    margin-bottom: 20px;
    font-size: 18px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    .admin-nav {
        flex-direction: column;
        gap: 10px;
    }
}