/* Custom Styles */
:root {
    --primary-blue: #2563eb;
    --light-blue: #dbeafe;
    --light-purple: #f3e8ff;
    --light-green: #dcfce7;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-600: #4b5563;
    --gray-900: #111827;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #eff6ff 0%, #ffffff 50%, #ecfeff 100%);
    padding-top: 8rem;
    padding-bottom: 5rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--gray-600);
    max-width: 800px;
    margin: 0 auto;
}

/* Category Section */
.category-section {
    padding: 3rem 0;
    background-color: white;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 5rem;
    z-index: 30;
}

.category-btn {
    padding: 0.625rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 500;
    transition: all 0.3s;
    transform: scale(1);
    border: none;
    background-color: var(--gray-100);
    color: var(--gray-600);
}

.category-btn:hover {
    transform: scale(1.05);
    background-color: var(--gray-200);
}

.category-btn.active {
    background-color: var(--primary-blue);
    color: white;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Posts Section */
.posts-section {
    padding: 5rem 0;
    background-color: var(--gray-100);
}

/* Blog Post Cards */
.blog-card {
    background-color: white;
    border-radius: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s;
    transform: translateY(0);
    cursor: pointer;
    height: 100%;
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

.blog-card:hover {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    transform: translateY(-0.5rem);
}

.blog-image {
    height: 12rem;
    background: linear-gradient(135deg, #60a5fa 0%, #22d3ee 100%);
    position: relative;
    overflow: hidden;
}

.blog-image-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s;
}

.blog-card:hover .blog-image-overlay {
    background-color: rgba(0, 0, 0, 0.1);
}

.blog-image-letter {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 4rem;
    font-weight: 700;
    opacity: 0.2;
}

.blog-card-body {
    padding: 1.5rem;
}

.blog-category {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.category-training {
    background-color: var(--light-blue);
    color: #1d4ed8;
}

.category-technology {
    background-color: var(--light-purple);
    color: #7e22ce;
}

.category-company-news {
    background-color: var(--light-green);
    color: #15803d;
}

.blog-date {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.blog-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.blog-excerpt {
    color: var(--gray-600);
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-footer {
    padding-top: 1rem;
    border-top: 1px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.blog-author {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.read-more {
    color: var(--primary-blue);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    transition: gap 0.3s;
}

.blog-card:hover .read-more {
    gap: 0.5rem;
}

/* Newsletter Section */
.newsletter-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, #2563eb 0%, #0891b2 100%);
    color: white;
}

.newsletter-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.newsletter-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .category-section {
        position: static;
    }
}