*{box-sizing:border-box;}#bookGrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:1rem;padding:0 1rem 1rem;}#iframeContainer{position:fixed;top:0;left:0;width:100%;height:100vh;background:var(--panel);display:flex;flex-direction:column;z-index:9999;display:none;transition:none;}#iframeContainer:not(.hidden){display:flex;}.iframe-header{display:flex;justify-content:flex-end;gap:.5rem;padding:.25rem .5rem;background:rgba(0,0,0,.6);}.iframe-header .btn{background:rgba(0,0,0,.6);border:none;color:#fff;padding:.3rem .5rem;border-radius:var(--radius);cursor:pointer;transition:.2s ease;}.iframe-header .btn:hover{background:var(--accent2);}#gameIframe{flex:1;width:100%;border:none;}.card{background:var(--panel);border-radius:var(--radius);overflow:hidden;position:relative;display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease;cursor:pointer;}.card:hover{transform:translateY(-5px);box-shadow:0 5px 20px rgba(162,0,255,.3);}.card img{width:100%;height:150px;object-fit:cover;display:block;transition:filter .25s ease;}.card:hover img{filter:brightness(.7);}.card-body{padding:.75rem;flex:1;display:flex;flex-direction:column;}.card-title{font-weight:600;font-size:.95rem;margin-bottom:.35rem;}.card-text{font-size:.8rem;color:var(--muted);flex:1;overflow:hidden;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;}.favorite-btn{position:absolute;top:.5rem;right:.5rem;background:rgba(0,0,0,.6);border:none;border-radius:50%;width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;}.favorite-btn i{color:#999;transition:color .25s ease;}.favorite-btn.active i{color:var(--accent2);}.play-overlay{position:absolute;top:0;left:0;width:100%;height:150px;background:transparent;opacity:0;display:flex;justify-content:center;align-items:center;transition:opacity .25s ease;}.card:hover .play-overlay{opacity:1;}.play-overlay i{color:var(--accent2);font-size:1.5rem;transition:transform .25s ease;}.play-overlay:hover i{transform:scale(1.2);}.filters{display:flex;flex-wrap:wrap;gap:.75rem;margin-bottom:1rem;justify-content:center;padding:1rem;}.filters input,.filters select{background:var(--panel);color:#fff;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:.5rem .75rem;outline:none;transition:border .25s ease,background .25s ease;width:200px;}.filters input:focus,.filters select:focus{border-color:var(--accent2);}.fav-toggle{display:flex;align-items:center;gap:.3rem;font-size:.9rem;text-align:left;width: 3em;}body{margin:0;padding:0;overflow:hidden;width:100%;}.content{margin-left:5em;width:calc(100% - 50px);overflow-y:scroll;height:100vh;scrollbar-width:thin;scrollbar-color:var(--accent2) var(--panel);}.content::-webkit-scrollbar{width:8px;height:8px;}.content::-webkit-scrollbar-track{background:var(--panel);}.content::-webkit-scrollbar-thumb{background:var(--accent2);border-radius:4px;}.iframe-header .btn.active i{color:var(--accent2);}@media (max-width: 768px){#bookGrid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));}.filters{flex-direction:column;align-items:center;}}@media (max-width: 600px){#bookGrid{grid-template-columns:repeat(2,1fr);}}