/* 全局样式 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    line-height: 1.6;
}

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

.navbar-nav .nav-link {
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: #fff !important;
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #e9ecef;
    border-radius: 12px 12px 0 0 !important;
}

/* 微博内容样式 */
.weibo-content {
    font-size: 1.1rem;
    line-height: 1.6;
}

.weibo-content p {
    margin-bottom: 0.5rem;
}

/* 图片网格样式 */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin-top: 15px;
}

.image-grid img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

.image-grid img:hover {
    transform: scale(1.05);
}

/* 操作按钮样式 */
.btn-group .btn {
    border-radius: 20px;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.btn-group .btn:hover {
    transform: translateY(-2px);
}

.btn-outline-primary:hover {
    background-color: #dc3545;
    border-color: #dc3545;
}

.btn-outline-secondary:hover {
    background-color: #6c757d;
    border-color: #6c757d;
}

.btn-outline-success:hover {
    background-color: #198754;
    border-color: #198754;
}

/* 头像样式 */
.rounded-circle {
    border: 2px solid #e9ecef;
    transition: border-color 0.3s ease;
}

.rounded-circle:hover {
    border-color: #007bff;
}

/* 表单样式 */
.form-control {
    border-radius: 8px;
    border: 1px solid #e9ecef;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-select {
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

/* 徽章样式 */
.badge {
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
    border-radius: 20px;
    transition: transform 0.3s ease;
}

.badge:hover {
    transform: scale(1.1);
}

/* 分页样式 */
.pagination .page-link {
    border-radius: 8px;
    margin: 0 2px;
    border: 1px solid #e9ecef;
    color: #007bff;
    transition: all 0.3s ease;
}

.pagination .page-link:hover {
    background-color: #007bff;
    border-color: #007bff;
    color: #fff;
    transform: translateY(-2px);
}

.pagination .page-item.active .page-link {
    background-color: #007bff;
    border-color: #007bff;
}

/* 模态框样式 */
.modal-content {
    border-radius: 12px;
    border: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.modal-header {
    border-bottom: 1px solid #e9ecef;
    border-radius: 12px 12px 0 0;
}

.modal-footer {
    border-top: 1px solid #e9ecef;
    border-radius: 0 0 12px 12px;
}

/* 评论样式 */
.comment-item {
    border-left: 3px solid #e9ecef;
    padding-left: 15px;
    margin-bottom: 15px;
    transition: border-color 0.3s ease;
}

.comment-item:hover {
    border-left-color: #007bff;
}

.reply-item {
    border-left: 2px solid #f8f9fa;
    padding-left: 10px;
    margin-left: 20px;
    margin-bottom: 10px;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .card {
        margin-bottom: 15px;
    }
    
    .btn-group .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .image-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
    
    .image-grid img {
        height: 100px;
    }
    
    .publish-btn {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1a1a1a;
        color: #e9ecef;
    }
    
    .card {
        background-color: #2d2d2d;
        color: #e9ecef;
    }
    
    .card-header {
        background-color: #2d2d2d;
        border-bottom-color: #495057;
    }
    
    .form-control {
        background-color: #3d3d3d;
        border-color: #495057;
        color: #e9ecef;
    }
    
    .form-control:focus {
        background-color: #3d3d3d;
        border-color: #007bff;
        color: #e9ecef;
    }
    
    .publish-btn {
        background-color: #28a745;
        box-shadow: 0 4px 12px rgba(40, 167, 69, 0.4);
    }
    
    .publish-btn:hover {
        background-color: #218838;
        box-shadow: 0 6px 20px rgba(40, 167, 69, 0.5);
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 工具提示样式 */
.tooltip {
    font-size: 0.875rem;
}

.tooltip-inner {
    background-color: #333;
    border-radius: 6px;
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* 特殊效果 */
.glow {
    box-shadow: 0 0 20px rgba(0, 123, 255, 0.5);
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* 发布按钮样式 */
.publish-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #28a745;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
    transition: all 0.3s ease;
    z-index: 1000;
    font-size: 24px;
}

.publish-btn:hover {
    background-color: #218838;
    color: white;
    text-decoration: none;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
}

.publish-btn:active {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.3);
}

.publish-btn i {
    line-height: 1;
    vertical-align: middle;
}