:root{--bg:#e7eae1;--surface:#fbfcf9;--surface-alt:#f1f3ec;--ink:#1f2a20;--ink-soft:#58634f;--green:#1f5134;--green-deep:#173b26;--green-deeper:#173a26;--brass:#b3873b;--brass-soft:#d8b878;--stamp:#9b3324;--stamp-deep:#7c2619;--line:#d6dccd;--paper-edge:#c8d0bd;--font-serif:"Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, "Times New Roman", serif;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono:"SF Mono", ui-monospace, "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;--radius:4px;--shadow:0 1px 2px #1f2a2014, 0 4px 14px #1f2a200d}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;background-image:linear-gradient(#1f513406 1px,#0000 1px);background-size:100% 2.2rem;line-height:1.55}.container{max-width:1100px;margin:0 auto;padding:2.5rem 1.25rem}.navbar{background:var(--green-deeper);color:#f1ede0;border-bottom:3px solid var(--brass);align-items:center;gap:1.75rem;padding:1rem 2rem;display:flex;box-shadow:0 2px 8px #102a1b40}.navbar a{color:#e7e2d2;letter-spacing:.01em;border-bottom:1px solid #0000;padding-bottom:2px;font-size:.95rem;font-weight:500;text-decoration:none;transition:border-color .15s,color .15s}.navbar a:hover{color:#fff;border-bottom-color:var(--brass-soft);text-decoration:none}.navbar .spacer{flex:1}.brand{font-family:var(--font-serif);letter-spacing:.01em;color:#fff;align-items:baseline;gap:.55rem;font-size:1.3rem;font-weight:700;display:inline-flex}.brand:before{content:"❦";color:var(--brass-soft);font-size:1.1rem}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:1rem;padding:1.5rem}.btn{background:var(--green);color:#fbfcf9;border:1px solid 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0 0 3px #1f513426}.form-row{margin-bottom:1.1rem}.form-row label{text-transform:uppercase;letter-spacing:.06em;color:var(--ink-soft);margin-bottom:.4rem;font-size:.74rem;font-weight:600;display:block}.error{color:var(--stamp-deep);border-radius:var(--radius);border-left:3px solid var(--stamp);background:#f7e7e3;margin-bottom:1rem;padding:.65rem 1rem;font-size:.92rem}.success{color:var(--green-deep);border-radius:var(--radius);border-left:3px solid var(--green);background:#e6efe6;margin-bottom:1rem;padding:.65rem 1rem;font-size:.92rem}.book-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem;display:grid}.book-card{border-left:3px solid var(--brass)}.book-card h3{font-family:var(--font-serif);color:var(--ink);margin-bottom:.5rem;font-size:1.15rem;font-weight:600;line-height:1.3}.book-card .meta{font-family:var(--font-mono);color:var(--ink-soft);letter-spacing:-.01em;margin-bottom:.85rem;font-size:.8rem}.badge{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.07em;border:1px solid;border-radius:2px;padding:.2rem .55rem;font-size:.68rem;font-weight:600;display:inline-block}.badge-available{color:var(--green);background:#e6efe6}.badge-unavailable{color:var(--stamp);background:#f7e7e3}.badge-active{color:#8a6420;background:#f4ead3}.badge-returned{background:var(--surface-alt);color:var(--ink-soft)}table{background:var(--surface);border-radius:var(--radius);width:100%;box-shadow:var(--shadow);border:1px solid var(--line);border-collapse:collapse;overflow:hidden}th,td{text-align:left;border-bottom:1px solid var(--line);padding:.8rem 1rem}th{background:var(--green-deep);color:#ece7d8;text-transform:uppercase;letter-spacing:.06em;font-size:.74rem;font-weight:600}tbody tr:nth-child(2n){background:var(--surface-alt)}tbody tr:hover{background:#eaf0e6}tbody tr:last-child td{border-bottom:none}h1{font-family:var(--font-serif);letter-spacing:-.01em;color:var(--ink);margin-bottom:1.5rem;padding-bottom:.6rem;font-size:2rem;font-weight:700}h1:after{content:"";background:var(--brass);width:52px;height:2px;margin-top:.6rem;display:block}h2{font-family:var(--font-serif);color:var(--ink);margin-bottom:1rem;font-size:1.35rem;font-weight:600}:focus-visible{outline:2px solid var(--brass);outline-offset:2px}@media (width<=600px){.navbar{flex-wrap:wrap;gap:1rem;padding:.85rem 1.1rem}.container{padding:1.75rem 1rem}h1{font-size:1.6rem}}@media (prefers-reduced-motion:reduce){*{transition:none!important}}