.home-page{min-height:100vh;background:var(--bg-primary);color:var(--text-primary);font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;padding:4rem;transition:background-color .25s ease-in-out,color .25s ease-in-out}.home-header{text-align:center;margin-bottom:4rem;padding:4rem 0}.home-header h1{font-size:4rem;font-weight:800;margin-bottom:2rem;letter-spacing:-.02em}.home-header h1 .gradient-text{background:linear-gradient(135deg,#2563eb,#7c3aed);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.home-header .subtitle{font-size:1.5rem;color:var(--text-secondary);font-weight:400}.presentations-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:3rem;max-width:1400px;margin:0 auto 4rem}@media(max-width:768px){.presentations-grid{grid-template-columns:1fr}}.presentation-card{background:var(--bg-secondary);border:2px solid var(--border);border-radius:1rem;overflow:hidden;transition:all .25s ease-in-out;display:flex;flex-direction:column;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.presentation-card:hover{transform:translateY(-8px);box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;border-color:#2563eb}.presentation-card .card-header{position:relative;height:200px;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;overflow:hidden}.presentation-card .card-header img{width:100%;height:100%;object-fit:cover}.presentation-card .card-header .default-thumbnail svg{width:80px;height:80px;color:#fffc}.presentation-card .card-header .badge{position:absolute;top:1rem;right:1rem;padding:.25rem .75rem;border-radius:.5rem;font-size:.875rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em}.presentation-card .card-header .badge.badge-beginner{background:#10b981;color:#fff}.presentation-card .card-header .badge.badge-intermediate{background:#f59e0b;color:#fff}.presentation-card .card-header .badge.badge-advanced{background:#ef4444;color:#fff}.presentation-card .card-content{padding:2rem;flex:1}.presentation-card .card-content h3{font-size:1.5rem;font-weight:700;margin-bottom:1rem;color:var(--text-primary)}.presentation-card .card-content .description{color:var(--text-secondary);line-height:1.6;margin-bottom:2rem}.presentation-card .card-content .metadata{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:2rem;font-size:.875rem;color:var(--text-muted)}.presentation-card .card-content .metadata span{display:inline-flex;align-items:center;gap:.25rem}.presentation-card .card-content .tags{display:flex;flex-wrap:wrap;gap:.5rem}.presentation-card .card-content .tags .tag{background:var(--bg-accent);color:#2563eb;padding:.25rem .75rem;border-radius:.5rem;font-size:.75rem;font-weight:600;border:1px solid var(--border)}.presentation-card .card-footer{padding:2rem;padding-top:0;display:flex;justify-content:center;align-items:center}.presentation-card .card-footer .btn{display:inline-block;padding:1rem 2rem;text-align:center;border-radius:.5rem;font-weight:600;text-decoration:none;transition:all .25s ease-in-out;cursor:pointer;border:2px solid transparent}.presentation-card .card-footer .btn.btn-primary{background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;border:none}.presentation-card .card-footer .btn.btn-primary:hover{transform:scale(1.05);box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.empty-state{grid-column:1/-1;text-align:center;padding:4rem;color:var(--text-secondary)}.empty-state svg{margin-bottom:2rem;opacity:.5}.empty-state h2{font-size:2rem;margin-bottom:1rem;color:var(--text-primary)}.empty-state p{font-size:1.125rem}.empty-state code{background:var(--bg-accent);padding:.25rem .5rem;border-radius:.375rem;font-family:Fira Code,JetBrains Mono,Consolas,monospace;color:#2563eb}.home-footer{text-align:center;padding:3rem 0;color:var(--text-muted);border-top:1px solid var(--border)}.home-footer p{margin:0}