/* 登录页面样式 */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

/* 侧边栏样式 */
.sidebar {
    min-height: calc(100vh - 56px);
    box-shadow: inset -1px 0 0 rgba(0, 0, 0, 0.1);
}

.sidebar .nav-link {
    color: #333;
    padding: 0.75rem 1rem;
    border-radius: 0.25rem;
    margin: 0.25rem 0;
}

.sidebar .nav-link:hover {
    background-color: #e9ecef;
    color: #0d6efd;
}

.sidebar .nav-link.active {
    background-color: #0d6efd;
    color: white;
}

.sidebar .nav-link i {
    margin-right: 0.5rem;
}

/* 主内容区样式 */
.page-content {
    padding: 1rem 0;
}

/* 卡片样式 */
.card {
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    margin-bottom: 1.5rem;
}

.card-body h2 {
    font-size: 2.5rem;
    margin: 0;
}

/* 表格样式 */
.table-responsive {
    border-radius: 0.25rem;
}

.table th {
    background-color: #f8f9fa;
    font-weight: 600;
    border-top: none;
}

/* 状态标签 */
.badge {
    padding: 0.35em 0.65em;
    font-size: 0.875em;
}

/* 按钮样式 */
.btn {
    border-radius: 0.25rem;
}

.btn i {
    margin-right: 0.25rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 56px;
        bottom: 0;
        left: -100%;
        z-index: 1000;
        transition: left 0.3s;
    }
    
    .sidebar.show {
        left: 0;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: #0d6efd;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: #6c757d;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}