:root{--color-background:#fff;--color-text:#222;--color-muted:#666;--color-accent:#2563eb;--color-border:#ccc}.dark{--color-background:#222;--color-text:#eee;--color-muted:#aaa;--color-accent:#3b82f6;--color-border:#555}body{max-width:800px;color:var(--color-text);background:var(--color-background);margin:0 auto;padding:2rem;font-family:sans-serif;line-height:1.4}header{gap:1rem;margin-bottom:2rem;display:flex}@media (width<=350px){header{flex-direction:column}}input{border:1px solid var(--color-border);border-radius:4px;outline:none;padding:.5rem .75rem;font-size:.875rem}input:focus{border-color:var(--color-accent)}h1{border-bottom:2px solid var(--color-muted);margin:0 0 1rem;padding-bottom:.25rem;font-size:2rem}h2{border-bottom:2px solid var(--color-muted);margin-bottom:1rem;padding-bottom:.25rem}p{margin:0}h3{text-transform:uppercase;letter-spacing:.05em;font-size:.875rem;font-weight:600}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}#results{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem;display:grid}@media (width<=350px){#results{flex-direction:column;display:flex}}.book-card.skeleton .book-cover-placeholder{animation:1.5s ease-in-out infinite pulse}.skeleton-line{background:var(--color-border);border-radius:4px;height:.75rem;margin-bottom:.5rem;animation:1.5s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.book-card{border:solid 1px var(--color-muted);border-radius:4px;flex-direction:column;align-items:center;padding-top:.5rem;padding-bottom:.5rem;display:flex;overflow:hidden}.book-card img{width:auto;height:180px;margin-bottom:.5rem;display:block}.book-cover-placeholder{background:var(--color-border);width:120px;height:180px;color:var(--color-muted);justify-content:center;align-items:center;margin-bottom:.5rem;font-size:.75rem;display:flex}.box-title-wrapper{flex-direction:column;justify-content:center;align-items:center;height:3rem;padding:0 .5rem;font-size:.875rem;display:flex}.book-title{-webkit-line-clamp:2;text-transform:uppercase;text-align:center;-webkit-box-orient:vertical;margin-bottom:.5rem;font-weight:600;display:-webkit-box;overflow:hidden}.book-author{color:var(--color-muted);text-align:center;padding:0 .5rem;font-size:.8rem}.book-year{color:var(--color-muted);font-size:.75rem}