/* 引入Google Fonts - Inter字体 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* 定制主题色 */
:root {
    --bs-primary: #4f46e5;
    --bs-primary-dark: #4338ca;
    --bs-primary-light: #818cf8;
    --bs-secondary: #06b6d4;
    --bs-secondary-dark: #0891b2;
    --bs-secondary-light: #22d3ee;
    --bs-success: #10b981;
    --bs-warning: #f59e0b;
    --bs-danger: #ef4444;
    --bs-info: #3b82f6;
    --bs-dark: #1f2937;
    --bs-light: #f3f4f6;
    --bs-gray: #6b7280;
    --bs-gray-light: #e5e7eb;
    --bs-white: #ffffff;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(79, 70, 229, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(79, 70, 229, 0);
    }
}

/* 全局样式 */
body {
    background-color: var(--bs-light);
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--bs-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    animation: fadeIn 0.6s ease-out;
}

/* 页面元素动画 */
.container {
    animation: fadeInUp 0.8s ease-out;
}

.post-card {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

.post-card:nth-child(1) { animation-delay: 0.1s; }
.post-card:nth-child(2) { animation-delay: 0.2s; }
.post-card:nth-child(3) { animation-delay: 0.3s; }
.post-card:nth-child(4) { animation-delay: 0.4s; }
.post-card:nth-child(5) { animation-delay: 0.5s; }
.post-card:nth-child(6) { animation-delay: 0.6s; }
.post-card:nth-child(7) { animation-delay: 0.7s; }
.post-card:nth-child(8) { animation-delay: 0.8s; }
.post-card:nth-child(9) { animation-delay: 0.9s; }
.post-card:nth-child(10) { animation-delay: 1s; }

/* 侧边栏元素动画 */
.stats-card {
    animation: fadeInRight 0.8s ease-out;
    opacity: 0;
    animation-fill-mode: forwards;
}

.stats-card:nth-child(1) { animation-delay: 0.2s; }
.stats-card:nth-child(2) { animation-delay: 0.4s; }
.stats-card:nth-child(3) { animation-delay: 0.6s; }

/* 滚动动画 */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 卡片样式 */
.card {
    border: 1px solid var(--bs-gray-light);
    box-shadow: var(--shadow-sm);
    border-radius: calc(var(--border-radius) + 4px);
    transition: var(--transition);
    background-color: var(--bs-white);
    overflow: hidden;
    position: relative;
    background: linear-gradient(135deg, var(--bs-white) 0%, #fefefe 100%);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--bs-primary), var(--bs-secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--bs-primary-light);
}

/* 卡片头部样式 */
.card-header {
    background-color: var(--bs-light);
    border-bottom: 1px solid var(--bs-gray-light);
    padding: 1rem;
    font-weight: 600;
    font-size: 1rem;
    color: var(--bs-dark);
    transition: var(--transition);
}

.card:hover .card-header {
    background-color: rgba(79, 70, 229, 0.05);
    color: var(--bs-primary);
}

/* 卡片内容样式 */
.card-body {
    padding: 1.5rem;
    transition: var(--transition);
}

.card:hover .card-body {
    background-color: rgba(255, 255, 255, 0.95);
}

/* 卡片底部样式 */
.card-footer {
    background-color: var(--bs-light);
    border-top: 1px solid var(--bs-gray-light);
    padding: 1rem;
    transition: var(--transition);
}

.card:hover .card-footer {
    background-color: rgba(79, 70, 229, 0.05);
}

/* 按钮样式优化 */
/* 主按钮 */
.btn-primary {
    background: linear-gradient(135deg, var(--bs-primary) 0%, var(--bs-primary-dark) 100%);
    border: none;
    border-radius: calc(var(--border-radius) + 2px);
    font-weight: 600;
    padding: 0.6rem 1.5rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    color: var(--bs-white);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--bs-primary-dark) 0%, #3730a3 100%);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--bs-white);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* 次要按钮 */
.btn-outline-secondary {
    border: 2px solid var(--bs-secondary);
    color: var(--bs-secondary);
    border-radius: calc(var(--border-radius) + 2px);
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    transition: var(--transition);
    background-color: transparent;
    position: relative;
    overflow: hidden;
}

.btn-outline-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.1), transparent);
    transition: left 0.5s ease;
}

.btn-outline-secondary:hover::before {
    left: 100%;
}

.btn-outline-secondary:hover {
    background-color: var(--bs-secondary);
    border-color: var(--bs-secondary-dark);
    color: var(--bs-white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn-outline-secondary:active {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* 成功按钮 */
.btn-success {
    background: linear-gradient(135deg, var(--bs-success) 0%, #059669 100%);
    border: none;
    border-radius: calc(var(--border-radius) + 2px);
    font-weight: 600;
    padding: 0.6rem 1.5rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    color: var(--bs-white);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--bs-white);
}

/* 通用按钮样式优化 */
.btn {
    border-radius: calc(var(--border-radius) + 2px);
    font-weight: 600;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
    font-size: 0.95rem;
    letter-spacing: 0.25px;
    text-transform: none;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn:active {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* 按钮图标优化 */
.btn i {
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.btn:hover i {
    transform: scale(1.1);
}

/* 小按钮 */
.btn-sm {
    padding: 0.4rem 0.875rem !important;
    font-size: 0.875rem !important;
}

/* 大按钮 */
.btn-lg {
    padding: 0.75rem 2rem !important;
    font-size: 1.125rem !important;
}

/* 圆形按钮 */
.btn-circle {
    width: 40px;
    height: 40px;
    padding: 0 !important;
    border-radius: 50% !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* 全宽按钮 */
.btn-block {
    width: 100%;
    display: block;
}

/* 表单样式 */
.form-label {
    font-weight: 500;
    color: var(--bs-dark);
    margin-bottom: 0.5rem;
}

.form-control {
    border: 1px solid var(--bs-gray-light);
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    background-color: var(--bs-white);
    color: var(--bs-dark);
}

.form-control:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 0.25rem rgba(79, 70, 229, 0.25), var(--shadow-md);
    outline: none;
    background-color: var(--bs-white);
    color: var(--bs-dark);
}

.form-control:hover:not(:focus) {
    border-color: var(--bs-primary-light);
}

/* 验证码样式 */
.captcha-container {
    display: flex;
    gap: 0.75rem;
}

.captcha-image {
    background-color: var(--bs-light);
    border: 1px solid var(--bs-gray-light);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1.2rem;
    letter-spacing: 3px;
    user-select: none;
    cursor: pointer;
    min-width: 120px;
    text-align: center;
    padding: 0.75rem 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.captcha-image:hover {
    background-color: var(--bs-gray-light);
    box-shadow: var(--shadow-md);
    transform: scale(1.02);
}

/* 错误信息样式 */
.error-message {
    color: var(--bs-danger);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    font-weight: 500;
    display: block;
}

/* 成功信息样式 */
.success-message {
    color: var(--bs-success);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    font-weight: 500;
    display: block;
}

/* 警告信息样式 */
.warning-message {
    color: var(--bs-warning);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    font-weight: 500;
    display: block;
}

/* 页脚样式 */
footer {
    background-color: var(--bs-white);
    padding: 30px 0;
    margin-top: 50px;
    border-top: 1px solid var(--bs-gray-light);
    text-align: center;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
    color: var(--bs-gray);
    font-size: 0.9rem;
}

footer a {
    color: var(--bs-primary);
    text-decoration: none;
    transition: var(--transition);
}

footer a:hover {
    color: var(--bs-primary-dark);
    text-decoration: underline;
}

/* 导航栏样式 */
.navbar {
    background-color: var(--bs-primary) !important;
    box-shadow: var(--shadow-md);
    padding: 0.75rem 0;
    border-bottom: none;
}

.navbar-brand {
    color: var(--bs-white) !important;
    font-weight: 700;
    font-size: 1.5rem;
    margin-right: 2rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

.nav-link {
    color: var(--bs-white) !important;
    font-weight: 500;
    padding: 0.6rem 1.25rem !important;
    margin: 0 0.25rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.nav-link:hover {
    color: var(--bs-white) !important;
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.25);
    border-radius: var(--border-radius);
    font-weight: 600;
}

/* 搜索表单优化 */
.navbar form {
    max-width: 300px;
    margin-right: 1rem !important;
    position: relative;
}

.navbar .form-control {
    border-radius: 25px 0 0 25px;
    border: none;
    box-shadow: var(--shadow-sm);
    padding: 0.6rem 1.25rem;
    background-color: var(--bs-white);
    color: var(--bs-dark);
    transition: var(--transition);
}

.navbar .form-control:focus {
    box-shadow: 0 0 0 0.25rem rgba(255, 255, 255, 0.25), var(--shadow-md);
    transform: translateY(-1px);
}

.navbar .btn-outline-light {
    border-radius: 0 25px 25px 0;
    border: none;
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--bs-white);
    padding: 0.6rem 1.5rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.navbar .btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.3);
    color: var(--bs-white);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.25rem;
    margin: 2rem 0;
}

.pagination li {
    display: inline-block !important;
    margin: 0 0.25rem !important;
}

.pagination .page-link {
    background-color: var(--bs-white) !important;
    color: var(--bs-primary) !important;
    border-color: var(--bs-gray-light) !important;
    padding: 0.5rem 1rem !important;
    text-align: center !important;
    min-width: 2.5rem !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    overflow: visible !important;
    white-space: nowrap !important;
    border-radius: var(--border-radius) !important;
    transition: var(--transition) !important;
    font-weight: 500 !important;
    box-shadow: var(--shadow-sm) !important;
}

.pagination .page-link:hover {
    background-color: var(--bs-primary) !important;
    color: var(--bs-white) !important;
    border-color: var(--bs-primary) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md) !important;
}

.pagination .page-item.active .page-link {
    background-color: var(--bs-primary) !important;
    border-color: var(--bs-primary) !important;
    color: var(--bs-white) !important;
    font-weight: 600 !important;
    box-shadow: var(--shadow-md) !important;
    transform: translateY(-2px);
}

.pagination .page-item.disabled .page-link {
    background-color: var(--bs-light) !important;
    color: var(--bs-gray) !important;
    border-color: var(--bs-gray-light) !important;
    pointer-events: none;
    opacity: 0.6;
}

.pagination .page-item.disabled .page-link:hover {
    background-color: var(--bs-light) !important;
    color: var(--bs-gray) !important;
    border-color: var(--bs-gray-light) !important;
    transform: none;
    box-shadow: var(--shadow-sm) !important;
}

/* 帖子标题样式 */
.post-title {
    color: var(--bs-primary);
    transition: var(--transition);
    display: block;
    overflow: hidden;
    text-decoration: none;
}

.post-title:hover {
    color: var(--bs-primary-dark);
    text-decoration: none;
    transform: translateX(4px);
}

.post-title h5 {
    margin-bottom: 0.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--bs-dark);
    line-height: 1.4;
    display: inline;
    vertical-align: middle;
}

.post-title .badge {
    vertical-align: middle;
    margin-bottom: 0.125rem;
}

.post-title h5:hover {
    color: var(--bs-primary);
}

/* 帖子元信息样式 */
.post-meta {
    font-size: 0.875rem;
    color: var(--bs-gray);
    overflow: visible;
    position: relative;
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--bs-gray-light);
}

.post-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: var(--transition);
    vertical-align: middle;
}

.post-meta img {
    vertical-align: middle;
    margin-bottom: 0.125rem;
}

.user-level-image,
.user-vip-image,
.user-gm-image {
    vertical-align: middle;
    margin-bottom: 0.125rem;
}

.post-meta span:hover {
    color: var(--bs-primary);
}

/* 热门帖子排行样式 */
.card-body ul.list-unstyled li {
    margin-bottom: 1rem;
    transition: var(--transition);
    padding: 0.75rem;
    border-radius: var(--border-radius);
}

.card-body ul.list-unstyled li:hover {
    background-color: var(--bs-light);
    transform: translateX(4px);
}

.card-body ul.list-unstyled li .flex-grow-1 a {
    display: block;
    overflow: hidden;
    text-decoration: none;
    color: var(--bs-dark);
    transition: var(--transition);
}

.card-body ul.list-unstyled li .flex-grow-1 a:hover {
    color: var(--bs-primary);
}

.card-body ul.list-unstyled li .flex-grow-1 a h6 {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
    line-height: 1.4;
}

.card-body ul.list-unstyled li .flex-grow-1 .d-flex {
    font-size: 0.75rem;
    gap: 0.75rem;
    color: var(--bs-gray);
}

/* 统计卡片样式 */
.stats-card {
    margin-bottom: 1.5rem;
    background-color: var(--bs-white);
    border-radius: var(--border-radius);
    overflow: hidden;
}

/* 列表组样式优化 */
.list-group {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.list-group-item {
    border: 1px solid var(--bs-gray-light);
    border-radius: 0;
    transition: var(--transition);
    padding: 0.75rem 1rem;
    background-color: var(--bs-white);
    color: var(--bs-dark);
}

.list-group-item:first-child {
    border-top-left-radius: var(--border-radius);
    border-top-right-radius: var(--border-radius);
}

.list-group-item:last-child {
    border-bottom-left-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
}

.list-group-item:hover {
    background-color: var(--bs-light);
    color: var(--bs-primary);
    transform: translateX(4px);
}

.list-group-item.active {
    background-color: var(--bs-primary);
    border-color: var(--bs-primary);
    color: var(--bs-white);
    font-weight: 600;
}

.list-group-item.active:hover {
    background-color: var(--bs-primary-dark);
    border-color: var(--bs-primary-dark);
    transform: none;
}

/* 帖子卡片样式 */
.post-card {
    margin-bottom: 1.5rem;
    position: relative;
    overflow: visible;
    border-radius: 12px;
    background-color: #fff;
    transition: all 0.3s ease;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.08);
}

.post-card .card-body {
    overflow: visible;
    position: relative;
    padding: 1.5rem;
}

/* 主容器优化 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 内容区域间距优化 */
.row {
    margin-top: 1.5rem;
}

/* 统计卡片和热门帖子卡片优化 */
.stats-card {
    margin-bottom: 1.5rem;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.stats-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
}

.stats-card .card-body {
    padding: 1.25rem;
}

.stats-card .card-header {
    border-radius: 12px 12px 0 0;
    padding: 1rem;
    font-weight: 600;
    font-size: 1rem;
}

/* 右侧边栏优化 */
.col-md-2 {
    padding-left: 1rem;
}

/* 确保右侧边栏卡片居中 */
.col-md-2 .card {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

/* 响应式布局优化 */
/* 大屏幕（桌面） */
@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 0 1.5rem;
    }
}

/* 中等屏幕（平板） */
@media (max-width: 992px) {
    /* 调整布局为单列 */
    .col-md-2 {
        margin-top: 2rem;
        padding-left: 0;
    }
    
    /* 导航栏优化 */
    .navbar form {
        max-width: 100%;
        margin-right: 0 !important;
        margin-bottom: 1rem;
    }
    
    .navbar-nav {
        align-items: center;
        width: 100%;
    }
    
    .nav-item {
        width: 100%;
        text-align: center;
    }
    
    .nav-link {
        margin: 0.25rem 0;
        display: block;
    }
    
    /* 调整卡片间距 */
    .post-card {
        margin-bottom: 1.25rem;
    }
    
    /* 调整统计卡片 */
    .stats-card {
        margin-bottom: 1.25rem;
    }
}

/* 小屏幕（平板/手机） */
@media (max-width: 768px) {
    /* 全局调整 */
    body {
        font-size: 15px;
        line-height: 1.5;
    }
    
    /* 容器调整 */
    .container {
        padding: 0 1rem;
    }
    
    /* 导航栏优化 */
    .navbar {
        padding: 0.5rem 0;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
        margin-right: 1rem;
    }
    
    .navbar .form-control {
        width: 100%;
        border-radius: var(--border-radius);
        margin-bottom: 0.5rem;
    }
    
    .navbar .btn-outline-light {
        border-radius: var(--border-radius);
        width: 100%;
    }
    
    /* 搜索表单调整为垂直布局 */
    .navbar form {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    /* 卡片内容调整 */
    .post-card .card-body {
        padding: 1.25rem;
    }
    
    .stats-card .card-body {
        padding: 1rem;
    }
    
    /* 帖子标题调整 */
    .post-title h5 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }
    
    /* 帖子元信息调整 */
    .post-meta {
        font-size: 0.8rem;
        gap: 0.75rem;
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
    
    /* 分页调整 */
    .pagination {
        gap: 0.125rem;
        margin: 1.5rem 0;
    }
    
    .pagination .page-link {
        padding: 0.4rem 0.8rem !important;
        min-width: 2.25rem !important;
        font-size: 0.875rem !important;
    }
    
    /* 热门帖子调整 */
    .card-body ul.list-unstyled li {
        margin-bottom: 0.75rem;
        padding: 0.5rem;
    }
    
    .card-body ul.list-unstyled li .flex-grow-1 a h6 {
        font-size: 0.85rem;
        margin-bottom: 0.25rem;
    }
    
    /* 按钮调整 */
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    /* 表单元素调整 */
    .form-control {
        padding: 0.6rem 0.875rem;
        font-size: 0.9rem;
    }
    
    .form-label {
        font-size: 0.9rem;
    }
}

/* 超小屏幕（手机） */
@media (max-width: 576px) {
    /* 全局调整 */
    body {
        font-size: 14px;
    }
    
    /* 容器调整 */
    .container {
        padding: 0 0.75rem;
    }
    
    /* 导航栏优化 */
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    /* 卡片内容调整 */
    .post-card .card-body {
        padding: 1rem;
    }
    
    .stats-card .card-body {
        padding: 0.875rem;
    }
    
    /* 帖子标题调整 */
    .post-title h5 {
        font-size: 0.95rem;
    }
    
    /* 热门帖子调整 */
    .card-body ul.list-unstyled li {
        margin-bottom: 0.5rem;
        padding: 0.4rem;
    }
    
    /* 分页调整 */
    .pagination {
        gap: 0.1rem;
    }
    
    .pagination .page-link {
        padding: 0.3rem 0.6rem !important;
        min-width: 2rem !important;
        font-size: 0.8rem !important;
    }
    
    /* 按钮调整 */
    .btn {
        padding: 0.4rem 0.875rem;
        font-size: 0.85rem;
    }
    
    /* 页脚调整 */
    footer {
        padding: 20px 0;
        font-size: 0.8rem;
    }
}

/* 竖屏手机优化 */
@media (max-height: 480px) {
    .navbar {
        padding: 0.25rem 0;
    }
    
    .post-card {
        margin-bottom: 1rem;
    }
}

/* 横屏手机优化 */
@media (max-height: 480px) and (orientation: landscape) {
    .container {
        padding: 0 0.5rem;
    }
    
    .post-card .card-body {
        padding: 1rem;
    }
    
    .stats-card {
        margin-bottom: 1rem;
    }
}

/* 修复下拉菜单被遮挡问题 */
.post-card .dropdown-menu {
    z-index: 9999; /* 使用更高的z-index确保显示在最上层 */
    position: absolute;
    top: 100%;
    margin-top: 0.125rem;
    display: none;
    float: left;
    min-width: 10rem;
    padding: 0.5rem 0;
    margin: 0.125rem 0 0;
    font-size: 1rem;
    color: #212529;
    text-align: left;
    list-style: none;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 0.25rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

/* 确保下拉菜单在右侧显示 */
.post-card .dropdown-menu-end {
    right: 0;
    left: auto;
}

/* 简化的下拉菜单修复方案 */
/* 移除可能导致冲突的复杂规则 */
.post-card {
    margin-bottom: 1.5rem;
    position: relative;
    overflow: visible;
    z-index: auto;
}

.post-card .card-body {
    overflow: visible;
    position: relative;
}

/* 核心修复：确保所有下拉菜单始终显示在最上层 */
.dropdown-menu {
    z-index: 9999 !important;
    position: absolute !important;
    top: 100% !important;
    right: 0 !important;
    left: auto !important;
    margin-top: 0.125rem !important;
    display: none;
    min-width: 10rem;
    padding: 0.5rem 0;
    margin: 0.125rem 0 0;
    font-size: 1rem;
    color: #212529;
    text-align: left;
    list-style: none;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 0.25rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

/* 确保下拉菜单在打开时显示 */
.show .dropdown-menu {
    display: block;
}

/* 确保下拉菜单在右侧显示 */
.dropdown-menu-end {
    right: 0 !important;
    left: auto !important;
}

/* 禁用Bootstrap的JS动态定位，使用CSS固定定位 */
.dropdown-menu[data-bs-popper] {
    top: 100% !important;
    right: 0 !important;
    left: auto !important;
    margin-top: 0.125rem !important;
    transform: none !important;
}

/* 修复帖子元信息区域的样式，确保下拉菜单不被裁剪 */
.post-meta {
    font-size: 0.875rem;
    color: #6c757d;
    overflow: visible;
    position: relative;
}