/* ==========================================
   BLOG - DARK VERSION
   ========================================== */

/* ==========================================
   BLOG HERO
   ========================================== */
.blog-hero {
    padding: calc(var(--spacing-xl) + 80px) var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(180deg, var(--color-bg-dark) 0%, var(--color-bg-darker) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.blog-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    animation: float 15s ease-in-out infinite;
}

.blog-hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.blog-hero-title {
    font-size: clamp(2.5rem, 7vw, 4rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.blog-hero-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   FILTERS & SEARCH
   ========================================== */
.blog-filters {
    padding: var(--spacing-md) 0;
    background: rgba(15, 23, 42, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: sticky;
    top: 73px;
    z-index: 100;
    backdrop-filter: blur(20px);
}

.filters-wrapper {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 280px;
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    font-size: 1rem;
    font-family: var(--font-body);
    color: var(--color-text-primary);
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    transition: var(--transition);
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(30, 41, 59, 0.8);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
}

.filter-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag-filter {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: var(--font-body);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(30, 41, 59, 0.5);
    color: var(--color-text-secondary);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.tag-filter:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-light);
    background: rgba(99, 102, 241, 0.1);
}

.tag-filter.active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-color: transparent;
}

/* ==========================================
   POSTS GRID
   ========================================== */
.blog-posts {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-darker);
    min-height: 60vh;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--spacing-md);
}

.post-card {
    background: rgba(30, 41, 59, 0.5);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    text-decoration: none;
    position: relative;
}

.post-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--border-radius);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

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

.post-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.post-card-header {
    padding: var(--spacing-md);
    padding-bottom: 0;
}

.post-card-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-sm);
}

.post-tag {
    padding: 0.375rem 0.875rem;
    font-size: 0.75rem;
    font-weight: 700;
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-primary-light);
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.post-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.3;
    margin-bottom: 0.75rem;
}

.post-card-body {
    padding: 0 var(--spacing-md);
    flex: 1;
}

.post-card-excerpt {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.post-card-footer {
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.post-date,
.post-read-time {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

/* ==========================================
   POST INDIVIDUAL
   ========================================== */
.post-header {
    padding: calc(var(--spacing-xl) + 80px) 0 var(--spacing-xl);
    background: linear-gradient(180deg, var(--color-bg-dark) 0%, var(--color-bg-darker) 100%);
    position: relative;
    overflow: hidden;
}

.post-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 60%);
}

.post-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.post-back:hover {
    color: var(--color-primary-light);
    transform: translateX(-5px);
}

.post-meta {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.post-title {
    font-size: clamp(2.5rem, 7vw, 4rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
}

.post-info {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    color: var(--color-text-muted);
    font-size: 1rem;
    position: relative;
    z-index: 1;
}

.post-info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ==========================================
   POST CONTENT
   ========================================== */
.post-content {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-darker);
}

.post-body {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.post-body h1,
.post-body h2,
.post-body h3,
.post-body h4 {
    color: var(--color-text-primary);
    font-weight: 700;
    line-height: 1.3;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.post-body h1 {
    font-size: 2.5rem;
}

.post-body h2 {
    font-size: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid rgba(99, 102, 241, 0.2);
}

.post-body h3 {
    font-size: 1.5rem;
}

.post-body h4 {
    font-size: 1.25rem;
}

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

.post-body a {
    color: var(--color-primary-light);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.post-body a:hover {
    border-bottom-color: var(--color-primary-light);
}

.post-body strong {
    font-weight: 700;
    color: var(--color-text-primary);
}

.post-body em {
    font-style: italic;
}

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

.post-body li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

.post-body blockquote {
    margin: 2rem 0;
    padding: 1.5rem;
    background: rgba(30, 41, 59, 0.5);
    border-left: 4px solid var(--color-primary);
    font-style: italic;
    color: var(--color-text-secondary);
    border-radius: 0 12px 12px 0;
}

.post-body pre {
    margin: 2rem 0;
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.post-body code {
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.9em;
}

.post-body :not(pre) > code {
    background: rgba(99, 102, 241, 0.15);
    padding: 0.25em 0.5em;
    border-radius: 6px;
    color: var(--color-primary-light);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.post-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin: 2rem 0;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.post-body table {
    width: 100%;
    margin: 2rem 0;
    border-collapse: collapse;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.post-body th,
.post-body td {
    padding: 0.875rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: left;
}

.post-body th {
    background: rgba(30, 41, 59, 0.5);
    font-weight: 700;
    color: var(--color-text-primary);
}

.post-body hr {
    margin: 3rem 0;
    border: none;
    border-top: 2px solid rgba(255, 255, 255, 0.05);
}

/* ==========================================
   POST FOOTER
   ========================================== */
.post-footer {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.post-share {
    margin-bottom: var(--spacing-lg);
}

.post-share h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.share-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: rgba(30, 41, 59, 0.5);
    color: var(--color-text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    cursor: pointer;
    font-family: var(--font-body);
}

.share-btn:hover {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

.post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.post-nav-link {
    padding: var(--spacing-md);
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: var(--transition);
}

.post-nav-link:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
    background: rgba(30, 41, 59, 0.8);
}

.post-nav-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.post-nav-title {
    color: var(--color-text-primary);
    font-weight: 700;
}

/* ==========================================
   LOADING & EMPTY STATES
   ========================================== */
.loading {
    text-align: center;
    padding: var(--spacing-xl) 0;
    grid-column: 1 / -1;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-sm);
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading p {
    color: var(--color-text-muted);
}

.no-results {
    text-align: center;
    padding: var(--spacing-xl) 0;
    color: var(--color-text-muted);
    font-size: 1.125rem;
}

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 1024px) {
    .post-navigation {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .blog-filters {
        top: 65px;
    }
    
    .filters-wrapper {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: 100%;
    }
    
    .filter-tags {
        justify-content: center;
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .post-title {
        font-size: 2rem;
    }
    
    .post-body {
        font-size: 1rem;
    }
    
    .share-buttons {
        flex-direction: column;
    }
    
    .share-btn {
        width: 100%;
        justify-content: center;
    }
}