:root {
    --primary-color: #4361ee;
    --secondary-color: #3f37c9;
    --accent-color: #4895ef;
    --bg-light: #f8f9fa;
}

body {
    background-color: #f0f2f5;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card {
    border: none;
    border-radius: 12px;
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1) !important;
}

.post-card {
    cursor: pointer;
}

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

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.badge {
    font-weight: 500;
}

.form-control:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.2rem rgba(67, 97, 238, 0.15);
}

.conversation-card:hover {
    background-color: #f8f9fa;
}

.comment-item:hover {
    background-color: #f8f9fa;
}

.post-content {
    font-size: 1rem;
    line-height: 1.8;
}

.post-images img {
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s;
}

.post-images img:hover {
    transform: scale(1.02);
}

.post-tags .badge {
    font-size: 0.85rem;
    padding: 0.4em 0.8em;
}

.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 1rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: ">";
}

footer {
    border-top: 1px solid #dee2e6;
}

@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.1rem;
    }

    .post-content {
        font-size: 0.95rem;
    }

    .card-body {
        padding: 1rem;
    }
}