:root {
    --primary-color: #0d6efd;
    --dark-color: #212529;
    --light-color: #f8f9fa;
}

body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: #333;
}

.navbar-brand {
    color: var(--primary-color) !important;
    font-size: 1.5rem;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.navbar-nav .nav-link {
    position: relative;
    padding-bottom: 8px;
    transition: color 0.3s ease-in-out;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease-in-out;
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 70%;
}

.dropdown-menu {
    border: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.dropdown-item:hover {
    background-color: var(--light-color);
    color: var(--primary-color);
}

.card {
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.card-img-top {
    height: 200px;
    object-fit: cover;
}

.post-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #444;
}

.post-content h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.post-content p {
    margin-bottom: 1rem;
}

.post-content img {
    max-width: 100%;
    height: auto;
    margin: 1.5rem 0;
    border-radius: 5px;
}

.lazy-load {
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.lazy-load[src] {
    opacity: 1;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0b5ed7;
    transform: scale(1.05);
}

.breadcrumb {
    background-color: var(--light-color);
    padding: 0.75rem 1rem;
    border-radius: 5px;
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    text-decoration: underline;
}

footer {
    margin-top: 5rem;
    padding-top: 3rem;
    border-top: 1px solid #e9ecef;
}

@media (max-width: 768px) {
    .card-img-top {
        height: 150px;
    }
    
    .post-content {
        font-size: 1rem;
    }
}