/* ================================================
   School Thinker - Shared Navigation & Footer CSS
   Link this in every static HTML page:
   <link rel="stylesheet" href="/shared.css">
   ================================================ */

/* === NAVBAR === */
.landing-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 12px 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #f1f5f9;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}
.landing-nav-logo { display: flex; align-items: center; }
.nav-center-links { display: flex; gap: 28px; align-items: center; }
.nav-center-links a {
    color: #334155;
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    transition: color 0.2s;
}
.nav-center-links a:hover { color: #2563eb; }

/* Dropdown */
.nav-dropdown { position: relative; display: inline-block; }
.nav-dropdown-btn {
    color: #334155;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-dropdown-content {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    min-width: 220px;
    padding: 8px;
    z-index: 999;
    border: 1px solid #e2e8f0;
}
.nav-dropdown:hover .nav-dropdown-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.nav-dropdown-content a {
    padding: 10px 14px;
    border-radius: 8px;
    color: #1e293b;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
}
.nav-dropdown-content a:hover { background: #eff6ff; color: #2563eb; }

/* Nav Buttons */
.nav-actions { display: flex; gap: 12px; align-items: center; }

/* Mobile */
.mobile-menu-btn {
    display: none;
    font-size: 26px;
    cursor: pointer;
    color: #1e293b;
    background: none;
    border: none;
}
.mobile-sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100%;
    background: white;
    z-index: 2000;
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.12);
    transition: right 0.3s ease;
    overflow-y: auto;
}
.mobile-sidebar.open { right: 0; }
.mobile-sidebar a {
    color: #334155;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    padding: 10px 0;
    border-bottom: 1px solid #f1f5f9;
}
.mobile-sidebar-close {
    font-size: 24px;
    cursor: pointer;
    color: #64748b;
    align-self: flex-end;
    margin-bottom: 8px;
}
.overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1999;
    opacity: 0;
    transition: opacity 0.3s;
}
.overlay.active { display: block; opacity: 1; }

/* === FOOTER === */
.mega-footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 64px 48px 32px;
    margin-top: 64px;
}
.mega-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}
.footer-logo { height: 48px; object-fit: contain; margin-bottom: 16px; }
.footer-desc {
    color: #94a3b8;
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0 0 20px;
}
.footer-contact-info { display: flex; flex-direction: column; gap: 8px; font-size: 0.9rem; }
.footer-contact-info p { margin: 0; color: #94a3b8; }
.footer-socials { display: flex; gap: 12px; margin-top: 16px; }
.social-icon {
    color: #94a3b8;
    font-size: 20px;
    text-decoration: none;
    transition: color 0.2s;
}
.social-icon:hover { color: #60a5fa; }

.footer-links-col { display: flex; flex-direction: column; gap: 12px; }
.footer-links-col h4 {
    color: #f1f5f9;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0 0 8px;
}
.footer-links-col a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}
.footer-links-col a:hover { color: #60a5fa; }

.footer-bottom {
    border-top: 1px solid #1e293b;
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.85rem;
}
.footer-bottom p { margin: 0; }
.footer-trust-badges { display: flex; gap: 16px; flex-wrap: wrap; }
.trust-badge {
    background: #1e293b;
    padding: 6px 14px;
    border-radius: 6px;
    font-weight: 500;
    color: #cbd5e1;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .hide-mobile { display: none !important; }
    .mobile-menu-btn { display: block !important; }
    .landing-nav { padding: 12px 16px !important; }
    .mega-footer { padding: 40px 20px 24px; }
    .mega-footer-grid {
        grid-template-columns: 1fr !important;
        gap: 32px !important;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* === BLOG ARTICLE TYPOGRAPHY & LAYOUT === */
.article-hero {
    background: linear-gradient(135deg, #eff6ff 0%, #f0fdf4 100%);
    padding: 60px 48px 40px;
    text-align: center;
    border-bottom: 1px solid #e2e8f0;
}
.badge {
    display: inline-block;
    background: #dbeafe;
    color: #2563eb;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
}
.article-hero h1 {
    font-size: 2.4rem;
    font-weight: 800;
    margin: 0 0 16px;
    line-height: 1.2;
    color: #1e293b;
    max-width: 800px;
    margin-inline: auto;
}
.article-hero p {
    color: #64748b;
    font-size: 1.1rem;
    max-width: 650px;
    margin: 0 auto 24px;
}
.meta {
    color: #64748b;
    font-size: 0.9rem;
}

/* Container for Wide Centered Reading View */
.article-container {
    max-width: 860px;
    margin: 0 auto;
    padding: 48px 24px;
}
.article-container h2 {
    font-size: 1.7rem;
    font-weight: 800;
    margin: 40px 0 16px;
    color: #0f172a;
    border-bottom: 2px solid #f1f5f9;
    padding-bottom: 8px;
}
.article-container h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 28px 0 10px;
    color: #0f172a;
}
.article-container p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: #334155;
    line-height: 1.8;
}
.article-container ul, .article-container ol {
    margin-bottom: 1.5rem;
    padding-left: 24px;
}
.article-container ul li, .article-container ol li {
    margin-bottom: 8px;
    font-size: 1.1rem;
    color: #334155;
    line-height: 1.7;
}
.breadcrumbs {
    font-size: 0.85rem;
    color: #64748b;
    margin-bottom: 1.5rem;
    text-align: center;
}
.breadcrumbs a {
    color: #64748b;
    text-decoration: none;
}
.breadcrumbs a:hover {
    color: #2563eb;
}

/* Related articles grid at bottom */
.related-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin: 24px 0;
}
.related-link {
    display: block;
    padding: 14px 16px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    text-decoration: none;
    color: #1e293b;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s;
}
.related-link:hover {
    border-color: #2563eb;
    background: #eff6ff;
    color: #2563eb;
}

@media (max-width: 700px) {
    .article-hero {
        padding: 40px 20px 28px;
    }
    .article-hero h1 {
        font-size: 1.7rem;
    }
    .container {
        padding: 32px 16px;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
}