/* 
   --------------------------------------------------------------------------
   DESIGN SYSTEM 2.0 - PREMIUM BLOG THEME (2026)
   Style: Clean, "Linear", Minimalist, Content-First
   -------------------------------------------------------------------------- 
*/

:root {
    /* Color Palette - Inter System */
    --bg-body: #FAFAFA;
    --bg-surface: #FFFFFF;
    --border-light: #E5E7EB; /* Gray-200 */
    --border-hover: #D1D5DB; /* Gray-300 */
    
    --text-primary: #111827; /* Gray-900 */
    --text-secondary: #4B5563; /* Gray-600 */
    --text-muted: #9CA3AF; /* Gray-400 */
    
    --accent-primary: #2563EB; /* Blue-600 */
    --accent-hover: #1D4ED8; /* Blue-700 */
    --accent-subtle: #EFF6FF; /* Blue-50 */

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #111827 0%, #374151 100%);
    --gradient-text: linear-gradient(to right, #2563EB, #7C3AED);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Typography */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}



/* Base Resets */
body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    letter-spacing: -0.025em; /* Tight tracking for modern feel */
}

a {
    transition: all 0.2s ease;
}

/* --------------------------------------------------------------------------
   COMPONENT: HERO SECTION
   -------------------------------------------------------------------------- */
.hero-section {
    position: relative;
    padding: 6rem 0 4rem;
    overflow: hidden;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-light);
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    background: var(--accent-subtle);
    color: var(--accent-primary);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.hero-title {
    font-size: clamp(3rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #111827, #4B5563);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

/* --------------------------------------------------------------------------
   COMPONENT: BLOG CARDS (The Core Redesign)
   -------------------------------------------------------------------------- */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
    padding: 4rem 0;
}

.article-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), border-color 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}

.card-image-wrapper {
    position: relative;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    overflow: hidden;
    background-color: #f3f4f6; /* Skeleton loading color */
}

.card-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--ease-out);
}

/* Checkered Pattern Overlay for technical feel */
.card-image-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(#000 1px, transparent 1px);
    background-size: 20px 20px;
    background-position: 0 0;
    opacity: 0.03;
    pointer-events: none;
}

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

.card-content {
    padding: 1.75rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

/* Metadata Row */
.card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.meta-dot {
    width: 4px;
    height: 4px;
    background: var(--text-muted);
    border-radius: 50%;
}

.category-tag {
    color: var(--accent-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Typography */
.card-heading {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    line-height: 1.35;
    color: var(--text-primary);
}

.card-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1; /* Pushes footer down */
}

/* Footer & Author */
.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-light);
    margin-top: auto;
}

.author-block {
    display: flex;
    align-items: center;
    gap: 10px;
}

.author-img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid var(--bg-surface);
    box-shadow: 0 0 0 1px var(--border-light);
}

.author-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
}

.read-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.2s ease;
}

.article-card:hover .read-link {
    gap: 8px; /* Arrow slide effect */
}

/* --------------------------------------------------------------------------
   COMPONENT: STICKY NAV REWRITE
   -------------------------------------------------------------------------- */
.navbar-premium {
    background: rgba(255, 255, 255, 0.85); /* Fallback */
    background: var(--bg-surface); /* Context-aware */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    background-color: color-mix(in srgb, var(--bg-surface), transparent 15%); /* Modern transparency */
}

.nav-link.active {
    color: var(--accent-primary) !important;
    font-weight: 600;
    position: relative;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-primary);
    border-radius: 2px;
}

/* --------------------------------------------------------------------------
   COMPONENT: ARTICLE PAGE TYPOGRAPHY
   -------------------------------------------------------------------------- */
.article-header {
    text-align: center;
    padding: 4rem 0 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.article-body {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.125rem; /* Larger text for reading */
    color: #374151;
}

.article-body p {
    margin-bottom: 1.75rem;
}

/* Code Blocks */
pre, code {
    font-family: var(--font-mono);
}

.code-block-wrapper {
    background: #1e1e1e; /* VS Code Dark */
    border-radius: 8px;
    margin: 2rem 0;
    position: relative;
    border: 1px solid #333;
    overflow: hidden;
    color: #d4d4d4;
    padding: 1.25rem;
    font-size: 0.9rem;
    line-height: 1.5;
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
}

/* Tables */
.table-premium {
    width: 100%;
    margin: 2rem 0;
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    overflow: hidden;
}

.table-premium th {
    background: #F9FAFB;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 1px;
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
}

.table-premium td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.95rem;
}

/* --------------------------------------------------------------------------
   COMPONENT: SHARE BUTTONS
   -------------------------------------------------------------------------- */
.share-buttons-container {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 1rem;
}

.share-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-light);
    background: var(--bg-surface);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 1.1rem;
    text-decoration: none;
}

/* Brand Colors for Standard Buttons */
.share-btn:not(.share-btn-sm).linkedin:hover { background: #0077b5; color: white; }
.share-btn:not(.share-btn-sm).twitter:hover { background: #1da1f2; color: white; }
.share-btn:not(.share-btn-sm).whatsapp:hover { background: #25d366; color: white; }
.share-btn:not(.share-btn-sm).copy-link:hover { background: var(--text-secondary); color: white; }

/* Small Button Overrides */
.share-btn-sm {
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    position: relative; /* Ensure it's above stretched-link */
    z-index: 2;         /* Ensure it's above stretched-link */
}

.share-btn-sm:hover {
    background: var(--accent-subtle) !important;
    color: var(--accent-primary) !important;
    transform: none;
    box-shadow: none;
}

/* --------------------------------------------------------------------------
   RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    .blog-grid {
        grid-template-columns: 1fr;
    }
}