/* ============================================
   BLOG CSS MODERNE - Design 2025
   ============================================ */

:root {
    --blog-primary: #667eea;
    --blog-secondary: #764ba2;
    --blog-accent: #f093fb;
    --blog-success: #10b981;
    
    --blog-bg: #0a0e1a;
    --blog-card: rgba(20, 25, 40, 0.8);
    --blog-card-hover: rgba(30, 35, 50, 0.95);
    --blog-border: rgba(102, 126, 234, 0.15);
    
    --blog-text: #e2e8f0;
    --blog-text-muted: #94a3b8;
    --blog-text-dim: #64748b;
}

/* ============================================
   Blog Spacer
   ============================================ */
.blog-spacer {
    height: 80px;
}

/* ============================================
   Blog Hero Section
   ============================================ */
.blog-hero {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 0 4rem;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 30% 20%, rgba(102, 126, 234, 0.15), transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(118, 75, 162, 0.15), transparent 50%);
}

.blog-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.05), transparent),
        linear-gradient(0deg, transparent, rgba(118, 75, 162, 0.05), transparent);
    animation: heroShimmer 8s ease-in-out infinite;
    pointer-events: none;
}

@keyframes heroShimmer {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.05); }
}

.blog-hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.blog-hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    position: relative;
    display: inline-block;
}

.title-main {
    display: block;
    background: linear-gradient(135deg, #ffffff 0%, var(--blog-primary) 50%, var(--blog-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 40px rgba(102, 126, 234, 0.5));
    animation: titleGlow 3s ease-in-out infinite;
}

.title-sub {
    display: block;
    font-size: 0.5em;
    color: var(--blog-text-muted);
    margin-top: 0.5rem;
}

@keyframes titleGlow {
    0%, 100% { filter: drop-shadow(0 0 40px rgba(102, 126, 234, 0.5)); }
    50% { filter: drop-shadow(0 0 60px rgba(102, 126, 234, 0.8)); }
}

.blog-hero-description {
    font-size: 1.25rem;
    color: var(--blog-text-muted);
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.8;
}

.blog-hero-decoration {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--blog-primary), var(--blog-accent));
    opacity: 0.08;
    filter: blur(60px);
    animation: float 20s ease-in-out infinite;
}

.circle-1 {
    width: 500px;
    height: 500px;
    top: -250px;
    right: -250px;
}

.circle-2 {
    width: 400px;
    height: 400px;
    bottom: -200px;
    left: -200px;
    animation-delay: -7s;
}

.circle-3 {
    width: 300px;
    height: 300px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(30px, -30px); }
    66% { transform: translate(-30px, 30px); }
}

/* ============================================
   Blog Section
   ============================================ */
.blog-section {
    padding: 4rem 0 6rem;
    position: relative;
}

/* ============================================
   Blog Grid
   ============================================ */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 2.5rem;
    margin-bottom: 4rem;
}

/* ============================================
   Blog Card
   ============================================ */
.blog-card {
    background: var(--blog-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--blog-border);
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    position: relative;
    display: flex;
    flex-direction: column;
    box-shadow: 
        0 4px 20px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    animation: cardFadeIn 0.6s ease-out backwards;
    animation-delay: calc(var(--item-index, 0) * 0.1s);
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.blog-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 24px;
    padding: 2px;
    background: linear-gradient(135deg, transparent, rgba(102, 126, 234, 0.4), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.blog-card:hover::before {
    opacity: 1;
}

.blog-card:hover {
    transform: translateY(-12px) scale(1.02);
    border-color: rgba(102, 126, 234, 0.4);
    background: var(--blog-card-hover);
    box-shadow: 
        0 25px 60px rgba(102, 126, 234, 0.4),
        0 0 0 1px rgba(102, 126, 234, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* Card Header */
.blog-card-header {
    padding: 1.75rem 1.75rem 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.blog-card-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.blog-card-date,
.blog-card-reading {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--blog-text-dim);
    font-weight: 500;
    transition: color 0.3s ease;
}

.blog-card:hover .blog-card-date,
.blog-card:hover .blog-card-reading {
    color: var(--blog-primary);
}

.blog-card-views {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--blog-success);
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 20px;
}

/* Card Content */
.blog-card-title {
    padding: 0 1.75rem;
    margin: 1.25rem 0;
}

.blog-card-title a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--blog-text);
    text-decoration: none;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: all 0.3s ease;
}

.blog-card:hover .blog-card-title a {
    color: var(--blog-primary);
    text-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

.blog-card-excerpt {
    padding: 0 1.75rem;
    color: var(--blog-text-muted);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-size: 0.95rem;
}

/* Card Footer */
.blog-card-footer {
    padding: 1.5rem 1.75rem 1.75rem;
    margin-top: auto;
    border-top: 1px solid rgba(102, 126, 234, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.blog-card-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
}

.author-avatar {
    width: 44px;
    height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--blog-primary), var(--blog-accent));
    border-radius: 12px;
    font-weight: 700;
    color: white;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    transition: all 0.3s ease;
}

.blog-card:hover .author-avatar {
    transform: rotate(5deg) scale(1.1);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.author-info {
    flex: 1;
    min-width: 0;
}

.author-name {
    font-weight: 600;
    color: var(--blog-text);
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.author-meta {
    font-size: 0.8rem;
    color: var(--blog-text-dim);
    margin-top: 0.25rem;
}

.blog-card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: linear-gradient(135deg, var(--blog-primary), var(--blog-secondary));
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    white-space: nowrap;
}

.blog-card-link:hover {
    gap: 0.75rem;
    transform: translateX(4px);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.5);
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    text-align: center;
    padding: 6rem 2rem;
}

.empty-icon {
    font-size: 5rem;
    color: var(--blog-text-dim);
    margin-bottom: 2rem;
    opacity: 0.4;
}

.empty-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--blog-text);
    margin-bottom: 1rem;
}

.empty-description {
    font-size: 1.1rem;
    color: var(--blog-text-muted);
}

/* ============================================
   Pagination
   ============================================ */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 4rem;
    flex-wrap: wrap;
}

.pagination-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background: var(--blog-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--blog-border);
    border-radius: 12px;
    color: var(--blog-text);
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
}

.pagination-btn:hover {
    background: linear-gradient(135deg, var(--blog-primary), var(--blog-secondary));
    border-color: transparent;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.pagination-pages {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.pagination-page {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--blog-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--blog-border);
    border-radius: 10px;
    color: var(--blog-text);
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
}

.pagination-page:hover,
.pagination-page.active {
    background: linear-gradient(135deg, var(--blog-primary), var(--blog-secondary));
    border-color: transparent;
    color: white;
    transform: scale(1.1);
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
}

/* ============================================
   Blog Post Page
   ============================================ */
.blog-post-section {
    padding: 4rem 0 6rem;
}

.blog-post {
    max-width: 900px;
    margin: 0 auto;
    background: var(--blog-card);
    backdrop-filter: blur(30px);
    border: 1px solid var(--blog-border);
    border-radius: 28px;
    padding: 3.5rem;
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.blog-post-header {
    margin-bottom: 3rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid var(--blog-border);
}

.blog-post-category {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.15));
    border: 1px solid var(--blog-border);
    border-radius: 12px;
    color: var(--blog-primary);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.75rem;
}

.blog-post-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.75rem;
    background: linear-gradient(135deg, #ffffff 0%, var(--blog-primary) 60%, var(--blog-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.blog-post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.blog-meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--blog-text-muted);
    font-size: 0.95rem;
    font-weight: 500;
}

.blog-meta-item i {
    font-size: 1.1rem;
    color: var(--blog-primary);
}

/* Blog Post Content */
.blog-post-content {
    color: var(--blog-text);
    font-size: 1.125rem;
    line-height: 1.9;
    margin-bottom: 3rem;
}

.blog-post-content h1,
.blog-post-content h2,
.blog-post-content h3,
.blog-post-content h4 {
    color: white;
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 1.25rem;
    line-height: 1.3;
}

.blog-post-content h1 { font-size: 2.5rem; }
.blog-post-content h2 { font-size: 2rem; }
.blog-post-content h3 { font-size: 1.5rem; }
.blog-post-content h4 { font-size: 1.25rem; }

.blog-post-content p {
    margin-bottom: 1.5rem;
}

.blog-post-content a {
    color: var(--blog-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: all 0.3s ease;
}

.blog-post-content a:hover {
    color: var(--blog-accent);
    text-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

.blog-post-content ul,
.blog-post-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.blog-post-content li {
    margin-bottom: 0.75rem;
}

.blog-post-content blockquote {
    margin: 2.5rem 0;
    padding: 1.75rem 2rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    border-left: 4px solid var(--blog-primary);
    border-radius: 12px;
    font-style: italic;
    color: var(--blog-text-muted);
}

.blog-post-content code {
    padding: 0.3rem 0.6rem;
    background: rgba(102, 126, 234, 0.15);
    border: 1px solid var(--blog-border);
    border-radius: 6px;
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 0.9em;
    color: var(--blog-accent);
}

.blog-post-content pre {
    margin: 2.5rem 0;
    padding: 2rem;
    background: rgba(10, 14, 26, 0.9);
    border: 1px solid var(--blog-border);
    border-radius: 16px;
    overflow-x: auto;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.blog-post-content pre code {
    padding: 0;
    background: none;
    border: none;
    color: #e2e8f0;
    font-size: 0.95rem;
}

.blog-post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    margin: 2.5rem 0;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

/* Blog Post Footer */
.blog-post-footer {
    padding-top: 2.5rem;
    border-top: 1px solid var(--blog-border);
}

.blog-post-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.blog-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.875rem 1.75rem;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
    cursor: pointer;
}

.blog-btn-back {
    background: var(--blog-card);
    border: 1px solid var(--blog-border);
    color: var(--blog-text);
}

.blog-btn-back:hover {
    background: linear-gradient(135deg, var(--blog-primary), var(--blog-secondary));
    border-color: transparent;
    color: white;
    transform: translateX(-5px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.blog-post-share {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.share-label {
    color: var(--blog-text-muted);
    font-weight: 600;
    font-size: 0.95rem;
}

.share-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--blog-card);
    border: 1px solid var(--blog-border);
    border-radius: 12px;
    color: var(--blog-text);
    font-size: 1.2rem;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
}

.share-btn:hover {
    background: linear-gradient(135deg, var(--blog-primary), var(--blog-secondary));
    border-color: transparent;
    color: white;
    transform: translateY(-3px) rotate(8deg);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

/* Related Posts */
.related-posts {
    margin-top: 4rem;
}

.related-posts-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
    background: linear-gradient(135deg, white, var(--blog-primary), var(--blog-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.related-post-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--blog-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--blog-border);
    border-radius: 16px;
    transition: all 0.4s ease;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.related-post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--blog-primary), var(--blog-accent));
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.4s ease;
}

.related-post-card:hover::before {
    transform: scaleY(1);
}

.related-post-card:hover {
    border-color: var(--blog-primary);
    transform: translateX(12px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.3);
}

.related-post-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    border-radius: 12px;
    font-size: 1.5rem;
    color: var(--blog-primary);
    transition: all 0.3s ease;
}

.related-post-card:hover .related-post-icon {
    transform: scale(1.1) rotate(10deg);
    background: linear-gradient(135deg, var(--blog-primary), var(--blog-accent));
    color: white;
}

.related-post-content {
    flex: 1;
    min-width: 0;
}

.related-post-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--blog-text);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.related-post-excerpt {
    font-size: 0.85rem;
    color: var(--blog-text-muted);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-post-meta {
    display: flex;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--blog-text-dim);
}

.related-post-arrow {
    font-size: 1.2rem;
    color: var(--blog-text-dim);
    transition: all 0.3s ease;
}

.related-post-card:hover .related-post-arrow {
    color: var(--blog-primary);
    transform: translateX(5px);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .blog-spacer {
        height: 70px;
    }
    
    .blog-hero {
        min-height: 50vh;
        padding: 4rem 0 3rem;
    }
    
    .blog-hero-title {
        font-size: 2.5rem;
    }
    
    .blog-hero-description {
        font-size: 1.1rem;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .blog-post {
        padding: 2rem 1.5rem;
        border-radius: 24px;
    }
    
    .blog-post-title {
        font-size: 2rem;
    }
    
    .blog-post-content {
        font-size: 1.05rem;
    }
    
    .blog-post-content h1 { font-size: 2rem; }
    .blog-post-content h2 { font-size: 1.75rem; }
    .blog-post-content h3 { font-size: 1.5rem; }
    
    .blog-post-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .blog-post-share {
        justify-content: center;
    }
    
    .pagination {
        gap: 0.5rem;
    }
    
    .pagination-btn span {
        display: none;
    }
    
    .related-posts-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-card-footer {
        flex-direction: column;
        align-items: stretch;
    }
    
    .blog-card-link {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .blog-post {
        padding: 1.5rem 1rem;
    }
    
    .blog-post-meta {
        gap: 1rem;
    }
    
    .blog-meta-item {
        font-size: 0.85rem;
    }
    
    .blog-card-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .pagination-page {
        width: 40px;
        height: 40px;
        font-size: 0.9rem;
    }
    
    .share-btn {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }
}