/* 页面布局样式 */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

main {
    flex: 1 0 auto;
    padding-bottom: 20px;
}

footer {
    flex-shrink: 0;
    margin-top: auto;
}

/* 导航栏样式 */
.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    font-size: 1rem;
    padding: 0.5rem 1rem;
}

/* 卡片样式 */
.card {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border: none;
    border-radius: 10px;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card-header {
    border-radius: 10px 10px 0 0 !important;
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
    padding: 1rem 1.25rem;
}

/* 按钮样式 */
.btn {
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
    transform: translateY(-2px);
}

/* 头像样式 */
.avatar {
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* 消息提示样式 */
.alert {
    border-radius: 8px;
    margin-bottom: 20px;
    border: none;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* 列表组样式 */
.list-group-item {
    border: 1px solid #dee2e6;
    margin-bottom: 5px;
    border-radius: 8px !important;
    transition: all 0.3s ease;
}

.list-group-item:hover {
    background-color: #f8f9fa;
    transform: translateX(5px);
}

/* 表单样式 */
.form-control, .form-select {
    border-radius: 8px;
    border: 1px solid #dee2e6;
    padding: 0.75rem 1rem;
}

.form-control:focus, .form-select:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* 页脚样式 */
footer {
    background-color: #17a2b8 !important;
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
}

footer a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #cce7ff;
    text-decoration: underline;
}

footer h5 {
    color: white;
    font-weight: bold;
    margin-bottom: 1rem;
}

footer ul {
    padding-left: 0;
}

footer li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

/* 模态框样式 */
.modal-content {
    border-radius: 12px;
    border: none;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.modal-header {
    border-radius: 12px 12px 0 0;
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
}

/* 表格样式 */
.table {
    border-collapse: separate;
    border-spacing: 0;
}

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

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 0, 0, 0.02);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .card {
        margin-bottom: 15px;
    }
    
    .display-1 {
        font-size: 3rem;
    }
    
    footer .row > div {
        margin-bottom: 1.5rem;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* 加载动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* 表单组样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #495057;
}

/* 徽章样式 */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
}

/* 链接样式 */
a {
    text-decoration: none;
    color: #0d6efd;
    transition: color 0.3s ease;
}

a:hover {
    color: #0a58ca;
}