/* ===================================
   WIDE BLOG LAYOUT WITH SIDEBAR
   =================================== */

/* ─── Map legacy blog vars → SBTC design tokens ─── */
:root {
  --blog-surface:      #0d1a12;
  --blog-surface-2:    #07100e;
  --blog-border:       rgba(44,244,106,0.12);
  --blog-primary:      #2cf46a;
  --blog-text-primary: #d4e8dc;
  --blog-text-secondary: rgba(212,232,220,0.65);
}

/* Wide blog layout */
.blog-wide-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    width: 100%;
}

/* Blog main content area */
.blog-main-content {
    min-width: 0; /* Prevents grid overflow */
}

/* Blog sidebar */
.blog-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

/* Sidebar sections */
.sidebar-section {
    background: var(--blog-surface);
    border: 1px solid var(--blog-border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
    transition: all var(--transition-medium);
}

.sidebar-section:hover {
    border-color: var(--blog-primary);
    box-shadow: 0 8px 25px var(--accent-primary-light);
}

.sidebar-section h3 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.1em;
    color: var(--blog-text-primary);
    margin: 0 0 15px 0;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--blog-primary);
}

/* Related sources section */
.related-sources {
    list-style: none;
    padding: 0;
    margin: 0;
}

.related-sources li {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--accent-primary-light);
}

.related-sources li:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.source-link {
    display: block;
    color: var(--blog-text-secondary);
    text-decoration: none;
    font-size: 0.9em;
    line-height: 1.4;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all var(--transition-fast);
    position: relative;
}

.source-link:hover {
    color: var(--blog-primary);
    background: var(--blog-primary-light);
    transform: translateX(4px);
}

.source-link::before {
    content: '🔗';
    margin-right: 8px;
    font-size: 0.8em;
}

.source-type {
    display: inline-block;
    background: var(--accent-primary-light);
    color: var(--blog-primary);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7em;
    font-weight: 600;
    text-transform: uppercase;
    margin-left: 8px;
}

/* ===================================
   ENHANCED BLOG VARIABLES
   =================================== */

/* Enhanced Blog Variables - Updated for Premium Design System */
:root {
    --blog-primary: var(--accent-primary);
    --blog-primary-light: var(--accent-primary-light);
    --blog-primary-medium: var(--accent-primary-medium);
    --blog-primary-dark: var(--accent-primary-dark);

    --blog-bg: var(--bg-primary);
    --blog-surface: var(--bg-tertiary);
    --blog-surface-light: var(--bg-hover);

    --blog-text-primary: var(--text-primary);
    --blog-text-secondary: var(--text-secondary);
    --blog-text-muted: var(--text-muted);

    --blog-link-color: var(--accent-primary);
    --blog-link-hover: var(--accent-primary-hover);
    --blog-meta-color: var(--text-tertiary);

    --blog-border: var(--border-subtle);
    --blog-shadow: var(--shadow-md);
    --blog-shadow-hover: var(--shadow-accent);

    /* Performance variables */
    --transition-fast: var(--transition-fast);
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Enhanced animations */
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --ease-sharp: cubic-bezier(0.25, 0.46, 0.45, 0.94);

    /* Social sharing colors */
    --social-twitter: #1DA1F2;
    --social-facebook: #4267B2;
    --social-linkedin: #0077B5;
    --social-reddit: #FF4500;
    --social-whatsapp: #25D366;
    --social-email: #EA4335;

    /* Reading progress colors */
    --progress-bg: var(--accent-primary-light);
    --progress-fill: var(--accent-primary);
}

/* ===================================
   BLOG LAYOUT - FIXED CENTERING
   =================================== */

/* Blog Layout - FIXED CENTERING */
.blog-layout {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Blog Content */
.blog-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 0;
}

/* Ensure all content is properly centered */
.blog-content h1,
.blog-content h2,
.blog-content h3,
.blog-content h4,
.blog-content p,
.blog-content ul,
.blog-content ol {
    max-width: 100%;
}

/* ===================================
   BLOG HEADER STYLES
   =================================== */

.blog-header-professional {
    text-align: center;
    margin-bottom: 60px;
    padding: 60px 0;
}

.blog-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--blog-primary), var(--blog-primary-dark));
    color: white;
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 0.85em;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.blog-main-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(2.5em, 5vw, 4em);
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--blog-primary), var(--blog-primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blog-subtitle {
    font-size: 1.3em;
    color: var(--blog-text-secondary);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto 40px;
}

.blog-stats-header {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.stat-item-header {
    text-align: center;
}

.stat-number {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 2.5em;
    color: var(--blog-primary);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9em;
    color: var(--blog-text-secondary);
    font-weight: 600;
}

/* Blog Body */
.blog-body {
    padding: 60px 0;
    line-height: 1.8;
}

.blog-body h2 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.8em;
    color: var(--blog-text-primary);
    margin: 40px 0 20px;
    position: relative;
    padding-left: 20px;
}

.blog-body h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: var(--blog-primary);
    border-radius: 2px;
}

.blog-body h3 {
    font-size: 1.4em;
    color: var(--blog-text-primary);
    margin: 30px 0 15px;
    font-weight: 700;
}

.blog-body p {
    color: var(--blog-text-secondary);
    margin-bottom: 20px;
    font-size: 1.05em;
}

.blog-body ul, .blog-body ol {
    color: var(--blog-text-secondary);
    margin: 20px 0;
    padding-left: 30px;
}

.blog-body li {
    margin-bottom: 8px;
}

/* Blog Tips and Warnings */
.blog-tip {
    background: var(--blog-primary-light);
    border-left: 4px solid var(--blog-primary);
    border-radius: 0 8px 8px 0;
    padding: 20px;
    margin: 30px 0;
    position: relative;
}

.blog-tip::before {
    content: '💡';
    position: absolute;
    top: 20px;
    left: -12px;
    background: var(--blog-bg);
    padding: 4px;
    border-radius: 50%;
}

.blog-warning {
    background: rgba(255, 160, 0, 0.1);
    border-left: 4px solid #ffa000;
    border-radius: 0 8px 8px 0;
    padding: 20px;
    margin: 30px 0;
    position: relative;
}

.blog-warning::before {
    content: '⚠️';
    position: absolute;
    top: 20px;
    left: -12px;
    background: var(--blog-bg);
    padding: 4px;
    border-radius: 50%;
}

/* Blog CTA */
.blog-cta {
    background: var(--blog-primary-light);
    border: 1px solid var(--blog-border);
    border-radius: 16px;
    padding: 40px;
    margin: 60px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.blog-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--accent-primary-light) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.blog-cta h3 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.6em;
    color: var(--blog-text-primary);
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.blog-cta p {
    color: var(--blog-text-secondary);
    margin-bottom: 25px;
    font-size: 1.1em;
    position: relative;
    z-index: 1;
}

/* ===================================
   SOCIAL SHARING
   =================================== */

.social-sharing {
    margin: 40px 0;
    padding: 25px;
    background: var(--blog-surface-light);
    border: 1px solid var(--blog-border);
    border-radius: 16px;
    text-align: center;
}

.social-sharing h3 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.2em;
    color: var(--blog-text-primary);
    margin: 0 0 20px 0;
}

.social-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.social-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-medium);
    cursor: pointer;
    font-size: 16px;
    min-width: 120px;
    justify-content: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.social-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.2);
    transition: left 0.3s ease;
}

.social-btn:hover::before {
    left: 100%;
}

.social-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}

.social-twitter { background: var(--social-twitter); }
.social-facebook { background: var(--social-facebook); }
.social-linkedin { background: var(--social-linkedin); }
.social-reddit { background: var(--social-reddit); }
.social-whatsapp { background: var(--social-whatsapp); }
.social-email { background: var(--social-email); }

/* Copy Link Feedback */
.copy-feedback {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--blog-primary);
    color: white;
    padding: 16px 24px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 16px;
    z-index: 1000;
    opacity: 0;
    transform: translateY(-20px);
    transition: all var(--transition-medium);
    box-shadow: 0 8px 25px var(--accent-primary-light);
}

.copy-feedback.show {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   ENHANCED BLOG CARDS
   =================================== */

.blog-card {
    background: var(--blog-surface);
    border: 1px solid var(--accent-primary-light);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s var(--ease-smooth);
    position: relative;
    backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.blog-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent-primary-light) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(44,244,106,0.25);
    border-color: var(--blog-primary);
}

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

.card-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.3em;
    font-weight: 900;
    color: var(--blog-text-primary);
    margin-bottom: 12px;
    line-height: 1.3;
}

.card-title a {
    color: var(--blog-link-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.card-title a:hover {
    color: var(--blog-link-hover);
    text-decoration: underline;
}

.card-excerpt {
    color: var(--blog-text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    font-size: 0.95em;
}

.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.9em;
    color: var(--blog-meta-color);
    font-weight: 500;
}

.read-more {
    color: var(--blog-link-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: 4px 8px;
    border-radius: 8px;
}

.read-more:hover {
    gap: 12px;
    color: var(--blog-link-hover);
    transform: translateX(2px);
    text-decoration: underline;
}

/* ===================================
   INTERACTIVE ELEMENTS
   =================================== */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--blog-primary);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 20px;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-medium);
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(44,244,106,0.3);
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--blog-primary-dark);
    transform: translateY(-2px);
}

/* ===================================
   PERFORMANCE OPTIMIZATIONS
   =================================== */

/* GPU acceleration for animations */
.blog-card,
.social-btn,
.back-to-top {
    transform: translateZ(0);
    will-change: transform;
}

/* Contain paint for complex elements */
.blog-grid,
.social-buttons {
    contain: layout style paint;
}

/* Optimize images */
.blog-card img,
.blog-hero img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: optimize-contrast;
}

/* ===================================
   MOBILE RESPONSIVE
   =================================== */

@media (max-width: 768px) {
    .blog-wide-layout {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 0 20px;
    }
    
    .blog-sidebar {
        position: static;
        max-height: none;
        overflow-y: visible;
    }
    
    .blog-hero {
        padding: 60px 0 40px;
    }
    
    .blog-hero h1 {
        font-size: 2.5em;
    }
    
    .blog-body {
        padding: 40px 0;
    }
    
    .blog-body h2 {
        font-size: 1.5em;
    }
    
    .social-buttons {
        gap: 10px;
    }
    
    .social-btn {
        padding: 12px 20px;
        font-size: 14px;
        min-width: 100px;
    }
    
    .blog-cta {
        padding: 30px 20px;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .blog-layout {
        padding: 0 15px;
    }
    
    .blog-hero h1 {
        font-size: 2.2em;
    }
    
    .blog-meta {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
    
    .social-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .social-btn {
        width: 100%;
        max-width: 200px;
    }
    
    .copy-feedback {
        right: 10px;
        left: 10px;
        text-align: center;
    }
}