/* ===== ROOT VARIABLES ===== */
:root {
    --primary-color: #ff7a00;
    --secondary-color: #001f3f;
    --accent-color: #ffa94d;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --border-radius: 8px;
    --box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 100%; max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.text-center {
    text-align: center;
}

.bg-light {
    background: var(--bg-light);
}

/* ===== HERO SECTION ===== */
.hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #001f3f 100%);
    color: var(--white);
    padding: 120px 5% 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 100%; max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: var(--white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.6;
    color: var(--white);
}

/* ===== BLOG SECTION ===== */
.blog-section {
    padding: 80px 5%;
}

.blog-container {
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 4rem;
    max-width: 100%; max-width: 1200px;
    margin: 0 auto;
}

/* ===== SIDEBAR STYLES ===== */
.blog-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.sidebar-widget {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
}

.sidebar-widget h3 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--bg-light);
    font-weight: 600;
}

.category-list {
    list-style: none;
    padding: 0;
}

.category-list li {
    margin-bottom: 0.5rem;
}

.category-list a {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    color: var(--text-dark);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
}

.category-list a:hover,
.category-list a.active {
    background: var(--primary-color);
    color: var(--white);
}

.category-list .count {
    font-size: 0.8rem;
    opacity: 0.7;
    font-weight: 400;
}

.latest-posts {
    display: grid;
    gap: 1rem;
}

.latest-post {
    padding-bottom: 1rem;
    border-bottom: 1px solid #e0e0e0;
}

.latest-post:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.latest-post h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    font-weight: 600;
}

.latest-post a {
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
}

.latest-post a:hover {
    color: var(--primary-color);
}

.post-date {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* ===== MAIN BLOG CONTENT ===== */
.blog-main {
    min-height: 500px;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.blog-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.blog-image {
    height: 200px;
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.blog-content {
    padding: 1.5rem;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.8rem;
}

.category {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.7rem;
}

.category.it-updates {
    background: #e3f2fd;
    color: #1976d2;
}

.category.language-tips {
    background: #fff3e0;
    color: #f57c00;
}

.category.academy-news {
    background: #e8f5e8;
    color: #2e7d32;
}

.date {
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.blog-title {
    margin: 0 0 1rem 0;
    font-size: 1.25rem;
    line-height: 1.4;
    font-weight: 600;
}

.blog-title a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

.blog-excerpt {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.blog-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.read-more:hover {
    color: var(--secondary-color);
    gap: 0.75rem;
}

.views {
    color: var(--text-light);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-light);
    border-radius: var(--border-radius);
}

.empty-state i {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.empty-state h3 {
    margin-bottom: 1rem;
    color: var(--text-light);
    font-weight: 600;
}

.empty-state p {
    color: var(--text-light);
    margin: 0;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .hero h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 968px) {
    .blog-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .blog-sidebar {
        position: static;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 100px 5% 60px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .blog-section {
        padding: 60px 5%;
    }
    
    .blog-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .blog-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .sidebar-widget {
        padding: 1rem;
    }
    
    .blog-content {
        padding: 1rem;
    }
    
    .blog-title {
        font-size: 1.1rem;
    }
}

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

.hero-content,
.blog-card,
.sidebar-widget {
    animation: fadeInUp 0.6s ease-out;
}

.blog-card:nth-child(1) { animation-delay: 0.1s; }
.blog-card:nth-child(2) { animation-delay: 0.2s; }
.blog-card:nth-child(3) { animation-delay: 0.3s; }

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    .blog-card,
    .blog-image img {
        animation: none;
        transition: none;
    }
}