/* ==================== 公共通用样式 ==================== */

/* 字体设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    background: #0d1217;
    color: #ffffff;
    line-height: 1.6;
    min-height: 100vh;
}

/* 链接 */
a {
    color: #bdc3c7;
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: #e74c3c;
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #c0392b 0%, #a93226 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.4);
}

.btn-secondary {
    background: #34495e;
    color: white;
}

.btn-secondary:hover {
    background: #2c3e50;
    transform: translateY(-2px);
}

.btn-success {
    background: #27ae60;
    color: white;
}

.btn-success:hover {
    background: #229954;
}

.btn-warning {
    background: #f39c12;
    color: white;
}

.btn-warning:hover {
    background: #d68910;
}

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

.btn-danger:hover {
    background: #c0392b;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

/* 提示框 */
.alert {
    padding: 16px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 500;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left: 4px solid #28a745;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-left: 4px solid #dc3545;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-left: 4px solid #ffc107;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border-left: 4px solid #17a2b8;
}

/* 表格 */
.table {
    width: 100%;
    border-collapse: collapse;
    background: #1a252f;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.table th,
.table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid #34495e;
}

.table th {
    background: #141c24;
    font-weight: 600;
    color: #e74c3c;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
}

.table tbody tr:hover {
    background: #2c3e50;
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* 表单 */
.form {
    max-width: 800px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #bdc3c7;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="datetime-local"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #34495e;
    border-radius: 6px;
    background: #141c24;
    color: #ffffff;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #e74c3c;
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.required {
    color: #e74c3c;
}

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

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 30px;
}

/* 卡片 */
.card {
    background: #1a252f;
    border-radius: 10px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    border: 1px solid #34495e;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    border-color: #e74c3c;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* 响应式 */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .table th,
    .table td {
        padding: 12px 8px;
        font-size: 12px;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 10px;
    }
}