/** * Critical CSS - Above-the-fold styles * * This file contains only the essential CSS needed for initial page render * to improve perceived performance and Core Web Vitals scores. * * Load this inline in and defer the main stylesheet. * * @package WireBrand */ /* ========================================================================== CSS Variables ========================================================================== */ :root { --primary: #0066cc; --secondary: #333; --text: #333; --muted: #666; --border: #ddd; --bg: #fff; --bg-light: #f8f9fa; --success: #28a745; --error: #dc3545; --warning: #ffc107; } /* ========================================================================== Base Reset & Typography ========================================================================== */ * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; font-size: 14px; line-height: 1.5; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } /* ========================================================================== Header & Navigation (Critical - Above fold) ========================================================================== */ header { position: sticky; top: 0; z-index: 100; background: #fff; border-bottom: 1px solid var(--border); } .top-bar { display: flex; align-items: center; justify-content: space-between; padding: 12px 24px; gap: 20px; background: #fff; } .logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 16px; } .logo-mark { width: 32px; height: 32px; background: var(--primary); border-radius: 6px; } .search-box { flex: 1; max-width: 500px; } .search-box input { width: 100%; padding: 10px 16px; border: 1px solid var(--border); border-radius: 24px; font-size: 13px; } .top-actions { display: flex; gap: 12px; align-items: center; } /* Main Navigation */ .main-nav { display: flex; gap: 24px; padding: 0 24px; border-top: 1px solid var(--border); background: #fafafa; overflow-x: auto; } .nav-item { position: relative; padding: 14px 0; font-size: 13px; white-space: nowrap; cursor: pointer; } /* ========================================================================== Hero Section (Critical - Above fold) ========================================================================== */ .hero-large { position: relative; min-height: 500px; display: flex; align-items: center; justify-content: center; overflow: hidden; } .hero-bg { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background-size: cover; background-position: center; } .hero-overlay { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(135deg, rgba(0,0,0,0.6), rgba(0,0,0,0.3)); } .hero-large-inner { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; padding: 40px 24px; } .hero-large-text { max-width: 600px; color: #fff; } .hero-large-tag { display: inline-block; padding: 6px 14px; background: rgba(255,255,255,0.2); border-radius: 20px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 16px; } .hero-large-text h1 { font-size: 42px; font-weight: 700; margin-bottom: 16px; line-height: 1.2; } .hero-large-text p { font-size: 16px; line-height: 1.6; opacity: 0.95; } /* ========================================================================== Buttons (Critical) ========================================================================== */ .btn-main, .btn-primary { display: inline-block; padding: 12px 24px; background: var(--primary); color: #fff; border: none; border-radius: 6px; font-size: 13px; font-weight: 600; text-decoration: none; cursor: pointer; transition: all 0.2s ease; } .btn-outline { display: inline-block; padding: 10px 20px; background: transparent; color: var(--text); border: 1px solid var(--border); border-radius: 6px; font-size: 13px; font-weight: 500; text-decoration: none; cursor: pointer; transition: all 0.2s ease; } .btn-main:hover, .btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,102,204,0.3); } .btn-outline:hover { border-color: var(--primary); color: var(--primary); } /* ========================================================================== Layout Grid (Critical) ========================================================================== */ .page-wrap { max-width: 1400px; margin: 0 auto; padding: 24px; display: grid; grid-template-columns: 260px 1fr; gap: 24px; } .wrap { max-width: 1200px; margin: 0 auto; padding: 24px; } /* ========================================================================== Product Grid (Critical - Likely visible above fold) ========================================================================== */ .product-grid, .card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 18px; } .product-card { background: #fff; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: all 0.2s ease; } .product-img { display: block; width: 100%; padding-top: 100%; background-size: cover; background-position: center; background-color: #f5f5f5; } /* ========================================================================== Utility Classes ========================================================================== */ .section { margin-bottom: 48px; } .section-title { font-size: 24px; font-weight: 700; margin-bottom: 20px; } /* Hide elements that can be loaded later */ .lazy-load { opacity: 0; transition: opacity 0.3s ease; } .lazy-load.loaded { opacity: 1; } /* ========================================================================== Responsive - Mobile First ========================================================================== */ @media (max-width: 768px) { .top-bar { flex-wrap: wrap; padding: 12px 16px; } .search-box { order: 3; width: 100%; max-width: 100%; } .main-nav { padding: 0 16px; gap: 16px; } .hero-large-text h1 { font-size: 28px; } .page-wrap { grid-template-columns: 1fr; padding: 16px; } .product-grid, .card-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; } } /* ========================================================================== Loading States (Critical for UX) ========================================================================== */ .skeleton { background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%); background-size: 200% 100%; animation: loading 1.5s infinite; } @keyframes loading { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } } /* Hide content that requires JS until loaded */ .requires-js { display: none; } .js-loaded .requires-js { display: block; }