/* ============================================
   VANTIX BIO BLOG - PREMIUM STYLESHEET
   Forensic-grade aesthetics for research content
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: #FFFFFF;
    color: #1E293B;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* ============================================
   PRE-LAUNCH ANNOUNCEMENT BAR
   ============================================ */
.announcement-bar {
    background: linear-gradient(135deg, #EA580C 0%, #C2410C 100%);
    color: #FFFFFF;
    text-align: center;
    padding: 10px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.announcement-bar a {
    color: #FFF;
    text-decoration: underline;
    margin-left: 8px;
}

/* ============================================
   HEADER - MATCHES MAIN SITE
   ============================================ */
header {
    background: #FFFFFF;
    border-bottom: 1px solid #E2E8F0;
    padding: 8px 16px;
    position: sticky;
    top: 36px; /* Below announcement bar */
    z-index: 999;
    box-shadow: 0 1px 3px rgba(0,0,0,0);
    transition: box-shadow 0.2s;
}

header.scrolled {
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    border-bottom-color: transparent;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 52px;
    width: auto;
}

nav {
    display: flex;
    gap: 20px;
    align-items: center;
}

nav a {
    color: #475569;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: color 0.2s;
}

nav a:hover,
nav a.active {
    color: #2563EB;
}

.nav-icons {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-icon {
    position: relative;
    cursor: pointer;
    font-size: 0.85rem;
    color: #94A3B8;
    transition: color 0.2s;
    background: none;
    border: none;
    padding: 6px;
    line-height: 1;
    text-decoration: none;
}

.nav-icon:hover {
    color: #2563EB;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: opacity 0.2s;
}

.mobile-menu-toggle:hover {
    opacity: 0.9;
}

.hamburger {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.hamburger span {
    width: 26px;
    height: 3px;
    background: #FFF;
    border-radius: 2px;
    transition: all 0.3s;
}

/* ============================================
   ARTICLE LAYOUT
   ============================================ */
.article-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Article Header */
.article-header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid #E2E8F0;
}

.category-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    padding: 6px 14px;
    border-radius: 20px;
    margin-bottom: 1.5rem;
}

/* Category Colors - Matches blog index */
.category-research {
    background: linear-gradient(135deg, #DBEAFE 0%, #BFDBFE 100%);
    color: #1E40AF;
}

.category-guides {
    background: linear-gradient(135deg, #D1FAE5 0%, #A7F3D0 100%);
    color: #065F46;
}

.category-education {
    background: linear-gradient(135deg, #EDE9FE 0%, #DDD6FE 100%);
    color: #5B21B6;
}

.article-header h1 {
    font-size: 2rem;
    font-weight: 800;
    color: #0F172A;
    line-height: 1.2;
    letter-spacing: -0.6px;
    margin-bottom: 0.75rem;
    text-wrap: pretty;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.85rem;
    color: #64748B;
    font-weight: 500;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Article Content */
.article-content h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #1E293B;
    margin-top: 3rem;
    margin-bottom: 1.2rem;
    letter-spacing: -0.5px;
    text-wrap: balance;
}

.article-content h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #334155;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.3px;
    text-wrap: balance;
}

.article-content p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #334155;
    margin-bottom: 1.5rem;
    text-wrap: pretty;
}

.article-content ul,
.article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 1.8rem;
}

.article-content li {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #334155;
    margin-bottom: 0.8rem;
}

/* Prevent orphan/widow lines */
.article-content p,
.article-content li {
    orphans: 3;
    widows: 3;
}

.article-content strong {
    font-weight: 600;
    color: #1E293B;
}

/* Highlight Boxes */
.highlight {
    background: linear-gradient(135deg, #FEF3C7 0%, #FDE68A 100%);
    border-left: 4px solid #F59E0B;
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.7;
}

.highlight strong {
    color: #92400E;
    font-weight: 700;
}

/* Alert Box (Red) */
.alert {
    background: linear-gradient(135deg, #FEE2E2 0%, #FECACA 100%);
    border-left: 4px solid #DC2626;
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.7;
}

.alert strong {
    color: #991B1B;
    font-weight: 700;
}

/* Spec Box (Dark) */
.spec-box {
    background: #0F172A;
    color: #E2E8F0;
    padding: 2rem;
    border-radius: 10px;
    margin: 2.5rem 0;
    font-family: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, monospace;
    font-size: 0.95rem;
}

.spec-box h3 {
    color: #FFFFFF;
    font-size: 1.2rem;
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    margin: 0.8rem 0;
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(226, 232, 240, 0.1);
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-label {
    color: #94A3B8;
    font-weight: 600;
}

.spec-value {
    color: #E2E8F0;
    text-align: right;
}

/* CTA Box */
.cta {
    background: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);
    color: white;
    padding: 2.5rem 2rem;
    border-radius: 12px;
    margin: 3rem 0;
    text-align: center;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.2);
}

.cta h3 {
    color: white;
    font-size: 1.6rem;
    margin: 0 0 1rem 0;
    font-weight: 700;
}

.cta p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

.cta a {
    display: inline-block;
    background: white;
    color: #1E40AF;
    padding: 14px 28px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    margin: 0.5rem;
    font-size: 0.95rem;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.cta a:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Article Footer */
.article-footer {
    margin-top: 4rem;
    padding-top: 2.5rem;
    border-top: 2px solid #E2E8F0;
}

.article-footer-content {
    background: #F8FAFC;
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid #E2E8F0;
}

.article-footer-content p {
    font-size: 0.95rem;
    color: #475569;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.article-footer-content p:last-child {
    margin-bottom: 0;
}

.article-footer-content strong {
    color: #1E293B;
    font-weight: 600;
}

.article-footer-content a {
    color: #2563EB;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.article-footer-content a:hover {
    color: #1E40AF;
    text-decoration: underline;
}

/* ============================================
   FOOTER - MATCHES MAIN SITE
   ============================================ */
footer {
    background: #0A1628;
    padding: 2.5rem 2rem 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 1.1rem;
    font-weight: 800;
    color: #FFFFFF;
    margin-bottom: 0.25rem;
    letter-spacing: 2px;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.8rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: #FFFFFF;
}

.footer-disclaimer {
    font-size: 0.68rem;
    color: rgba(255, 255, 255, 0.35);
    line-height: 1.6;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 800px;
}

.research-only {
    font-weight: 700;
    color: #EF4444;
}

/* ============================================
   RESPONSIVE TABLE
   ============================================ */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 2rem 0;
    border-radius: 8px;
    border: 1px solid #E2E8F0;
    position: relative;
}

/* Scroll shadow indicator on mobile */
.table-responsive::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 30px;
    background: linear-gradient(to left, rgba(0,0,0,0.1), transparent);
    pointer-events: none;
    opacity: 1;
}

@media (min-width: 769px) {
    .table-responsive::after {
        display: none;
    }
}

.table-responsive table {
    margin: 0;
    min-width: 580px;
    width: 100%;
}

/* Mobile scroll hint */
.mobile-scroll-hint {
    display: none;
}

@media (max-width: 768px) {
    .mobile-scroll-hint {
        display: block !important;
        text-align: center;
        font-style: italic;
    }
}

/* Mobile: Stack table as cards */
@media (max-width: 640px) {
    .table-responsive {
        border: none;
        overflow: visible;
    }
    
    .table-responsive::after {
        display: none;
    }
    
    .table-responsive table,
    .table-responsive thead,
    .table-responsive tbody,
    .table-responsive tr,
    .table-responsive th,
    .table-responsive td {
        display: block;
        width: 100% !important;
        min-width: 0 !important;
    }
    
    .table-responsive thead {
        display: none;
    }
    
    .table-responsive tr {
        margin-bottom: 1.5rem;
        border: 1px solid #E2E8F0 !important;
        border-radius: 8px;
        padding: 1rem !important;
        background: #FFF !important;
    }
    
    .table-responsive td {
        text-align: left !important;
        padding: 0.5rem 0 !important;
        border: none !important;
        position: relative;
        padding-left: 40% !important;
    }
    
    .table-responsive td::before {
        content: attr(data-label);
        position: absolute;
        left: 0;
        width: 38%;
        font-weight: 600;
        color: #1E293B;
        text-align: left;
    }
    
    .table-responsive td:first-child {
        font-size: 1rem !important;
        font-weight: 700 !important;
        color: #2563EB !important;
        padding-left: 0 !important;
        margin-bottom: 0.5rem;
        border-bottom: 1px solid #E2E8F0 !important;
        padding-bottom: 0.5rem !important;
    }
    
    .table-responsive td:first-child::before {
        display: none;
    }
}

/* Spec value word break for long strings */
.spec-value {
    word-break: break-word;
}

/* ============================================
   MOBILE RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .announcement-bar {
        font-size: 0.65rem;
        padding: 5px 10px;
        position: relative !important; /* Not sticky on mobile */
    }

    header {
        top: 0;
        padding: 4px 10px;
        position: relative !important; /* Not sticky on mobile */
    }

    nav {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .logo img {
        height: 24px;
    }

    .article-container {
        padding: 1rem 0.875rem;
    }

    .article-header {
        margin-bottom: 1.25rem;
        padding-bottom: 1rem;
    }

    .category-badge {
        margin-bottom: 0.5rem;
        padding: 0.25rem 0.65rem;
        font-size: 0.7rem;
        letter-spacing: 0.3px;
    }

    .article-header h1 {
        font-size: 1.1rem;
        letter-spacing: -0.5px;
        line-height: 1.15;
        margin-bottom: 0.65rem;
        font-weight: 700;
    }

    .article-meta {
        flex-wrap: wrap;
        gap: 0.4rem 0.875rem;
        font-size: 0.75rem;
    }

    .article-content h2 {
        font-size: 1.15rem;
        margin-top: 1.75rem;
        margin-bottom: 0.75rem;
        line-height: 1.3;
    }

    .article-content h3 {
        font-size: 1rem;
        margin-top: 1.5rem;
        margin-bottom: 0.5rem;
        line-height: 1.35;
    }

    .article-content p,
    .article-content li {
        font-size: 0.9375rem;
        line-height: 1.6;
    }

    .spec-box {
        padding: 0.875rem;
        font-size: 0.75rem;
        margin: 1rem 0;
    }

    .spec-row {
        flex-direction: column;
        gap: 0.25rem;
        margin-bottom: 0.75rem;
    }

    .spec-row:last-child {
        margin-bottom: 0;
    }

    .spec-label {
        font-size: 0.7rem !important;
        letter-spacing: 0.5px;
    }

    .spec-value {
        text-align: left;
        color: #CBD5E1;
        font-size: 0.8rem !important;
    }

    .highlight,
    .alert {
        padding: 0.875rem;
        font-size: 0.8125rem;
        margin: 1rem 0;
        line-height: 1.5;
    }

    .highlight strong,
    .alert strong {
        font-size: 0.8125rem !important;
    }

    .cta {
        padding: 1rem 0.875rem;
        margin: 1.5rem 0;
    }

    .cta h3 {
        font-size: 1rem;
        margin-bottom: 0.4rem;
        line-height: 1.3;
    }

    .cta p {
        font-size: 0.85rem;
        margin-bottom: 0.875rem;
        line-height: 1.5;
    }

    .cta a {
        display: inline-block;
        margin: 0.3rem;
        padding: 10px 16px;
        font-size: 0.85rem;
    }

    .article-footer-content {
        padding: 1.25rem;
    }

    /* Reduce summary box on mobile */
    .article-content > .highlight:first-of-type,
    .article-content > div[style*="background: #EFF6FF"],
    .article-content > div[style*="background: #2563EB"] {
        padding: 0.875rem !important;
        margin: 1rem 0 !important;
        border-radius: 6px !important;
    }

    .article-content > div[style*="background: #2563EB"] h3,
    .article-content > div[style*="background: #2563EB"] p {
        font-size: 0.875rem !important;
        line-height: 1.35 !important;
        margin-bottom: 0.5rem !important;
    }

    .article-content > div[style*="background: #2563EB"] ul {
        margin: 0.5rem 0 0 0 !important;
        padding-left: 1.25rem !important;
    }

    .article-content > div[style*="background: #2563EB"] li {
        font-size: 0.8125rem !important;
        line-height: 1.4 !important;
        margin-bottom: 0.4rem !important;
    }

    /* Tighter list spacing on mobile */
    .article-content ul,
    .article-content ol {
        margin: 0.875rem 0;
        padding-left: 1.25rem;
    }

    .article-content li {
        margin-bottom: 0.4rem;
    }
}

/* ============================================
   SCROLL ENHANCEMENTS
   ============================================ */
html {
    scroll-behavior: smooth;
}

/* Header scroll shadow effect */
.scrolled {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08) !important;
}