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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: #f5f5f5;
    font-size: 14px;
    line-height: 1.5;
}

.container {
    max-width: 70%;
    padding: 10px;
    margin: 0 auto;
}

.form-card {
    background: #fff;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.form-title {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin-bottom: 15px;
    text-align: center;
}

.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    color: #333;
    font-size: 14px;
    margin-bottom: 5px;
    font-weight: 500;
}

.required {
    color: #ff4d4f;
    margin-left: 2px;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="email"],
.form-group input[type="date"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #1890ff;
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.radio-group, .checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.radio-label, .checkbox-label {
    display: flex;
    align-items: center;
    font-weight: normal;
    cursor: pointer;
    padding: 5px 10px;
    background: #f0f0f0;
    border-radius: 4px;
}

.radio-label input, .checkbox-label input {
    margin-right: 5px;
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background: #1890ff;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 10px;
}

.submit-btn:active {
    background: #096dd9;
}

.success-msg {
    background: #f6ffed;
    border: 1px solid #b7eb8f;
    color: #52c41a;
    padding: 10px;
    border-radius: 4px;
    text-align: center;
    margin-bottom: 10px;
    display: none;
}

.error-msg {
    background: #fff2f0;
    border: 1px solid #ffccc7;
    color: #ff4d4f;
    padding: 10px;
    border-radius: 4px;
    text-align: center;
    margin-bottom: 10px;
    display: none;
}

/* 后台样式 */
.admin-container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 15px;
}

.admin-header {
    background: #fff;
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.admin-nav {
    display: flex;
    gap: 15px;
}

.admin-nav a {
    color: #333;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 4px;
    transition: background 0.3s;
}

.admin-nav a:hover, .admin-nav a.active {
    background: #e6f7ff;
    color: #1890ff;
}

.admin-card {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.admin-card h2 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #333;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th, table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
}

table th {
    background: #fafafa;
    font-weight: 600;
    color: #333;
}

.btn {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    margin-right: 5px;
}

.btn-primary {
    background: #1890ff;
    color: #fff;
}

.btn-success {
    background: #52c41a;
    color: #fff;
}

.btn-danger {
    background: #ff4d4f;
    color: #fff;
}

.btn-warning {
    background: #faad14;
    color: #fff;
}

.filter-box {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
    align-items: flex-end;
}

.filter-box input, .filter-box select {
    padding: 8px 10px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-size: 14px;
}

.login-container {
    max-width: 350px;
    margin: 100px auto;
    padding: 0 15px;
}

.login-card {
    background: #fff;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.login-title {
    font-size: 20px;
    text-align: center;
    margin-bottom: 25px;
    color: #333;
}

@media (max-width: 768px) {
    .admin-header {
        flex-direction: column;
        gap: 10px;
    }
    
    .admin-nav {
        width: 100%;
        justify-content: space-around;
    }
    
    table {
        font-size: 12px;
    }
    
    table th, table td {
        padding: 6px;
    }
}