:root{--bg: #e7eae1;--surface: #fbfcf9;--surface-alt: #f1f3ec;--ink: #1f2a20;--ink-soft: #58634f;--green: #1f5134;--green-deep: #173b26;--green-deeper: #102a1b;--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 rgba(31, 42, 32, .08), 0 4px 14px rgba(31, 42, 32, .05)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg);background-image:linear-gradient(rgba(31,81,52,.025) 1px,transparent 1px);background-size:100% 2.2rem;color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased}.container{max-width:1100px;margin:0 auto;padding:2.5rem 1.25rem}.navbar{background:var(--green-deeper);color:#f1ede0;padding:1rem 2rem;display:flex;align-items:center;gap:1.75rem;border-bottom:3px solid var(--brass);box-shadow:0 2px 8px #102a1b40}.navbar a{color:#e7e2d2;text-decoration:none;font-weight:500;font-size:.95rem;letter-spacing:.01em;padding-bottom:2px;border-bottom:1px solid transparent;transition:border-color .15s ease,color .15s ease}.navbar a:hover{text-decoration:none;color:#fff;border-bottom-color:var(--brass-soft)}.navbar .spacer{flex:1}.brand{font-family:var(--font-serif);font-size:1.3rem;font-weight:700;letter-spacing:.01em;color:#fff;display:inline-flex;align-items:baseline;gap:.55rem}.brand:before{content:"❦";color:var(--brass-soft);font-size:1.1rem}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow);margin-bottom:1rem}.btn{background:var(--green);color:#fbfcf9;border:1px solid var(--green-deep);padding:.6rem 1.3rem;border-radius:var(--radius);cursor:pointer;font-family:var(--font-sans);font-size:.92rem;font-weight:600;letter-spacing:.01em;box-shadow:0 1px #102a1b59;transition:background .15s ease,transform .05s ease}.btn:hover{background:var(--green-deep)}.btn:active{transform:translateY(1px)}.btn:disabled{background:#a9b0a3;border-color:#99a193;color:#eef0ea;cursor:not-allowed;box-shadow:none}.btn-secondary{background:var(--surface);color:var(--green-deep);border:1px solid var(--green);box-shadow:none}.btn-secondary:hover{background:var(--surface-alt)}.btn-danger{background:var(--stamp);border-color:var(--stamp-deep);color:#fdf3f1}.btn-danger:hover{background:var(--stamp-deep)}.input{width:100%;padding:.65rem .75rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);font-family:var(--font-sans);font-size:.95rem;color:var(--ink);transition:border-color .15s ease,box-shadow .15s ease}.input:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px #1f513426}.form-row{margin-bottom:1.1rem}.form-row label{display:block;margin-bottom:.4rem;font-weight:600;font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-soft)}.error{background:#f7e7e3;color:var(--stamp-deep);padding:.65rem 1rem;border-radius:var(--radius);border-left:3px solid var(--stamp);margin-bottom:1rem;font-size:.92rem}.success{background:#e6efe6;color:var(--green-deep);padding:.65rem 1rem;border-radius:var(--radius);border-left:3px solid var(--green);margin-bottom:1rem;font-size:.92rem}.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem}.book-card{border-left:3px solid var(--brass)}.book-card h3{font-family:var(--font-serif);font-size:1.15rem;font-weight:600;line-height:1.3;color:var(--ink);margin-bottom:.5rem}.book-card .meta{font-family:var(--font-mono);color:var(--ink-soft);font-size:.8rem;letter-spacing:-.01em;margin-bottom:.85rem}.badge{display:inline-block;padding:.2rem .55rem;border-radius:2px;font-family:var(--font-mono);font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.07em;border:1px solid currentColor}.badge-available{background:#e6efe6;color:var(--green)}.badge-unavailable{background:#f7e7e3;color:var(--stamp)}.badge-active{background:#f4ead3;color:#8a6420}.badge-returned{background:var(--surface-alt);color:var(--ink-soft)}table{width:100%;background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);border-collapse:collapse}th,td{padding:.8rem 1rem;text-align:left;border-bottom:1px solid var(--line)}th{background:var(--green-deep);color:#ece7d8;font-weight:600;font-size:.74rem;text-transform:uppercase;letter-spacing:.06em}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);font-size:2rem;font-weight:700;letter-spacing:-.01em;color:var(--ink);margin-bottom:1.5rem;padding-bottom:.6rem}h1:after{content:"";display:block;width:52px;height:2px;margin-top:.6rem;background:var(--brass)}h2{font-family:var(--font-serif);font-size:1.35rem;font-weight:600;color:var(--ink);margin-bottom:1rem}:focus-visible{outline:2px solid var(--brass);outline-offset:2px}@media (max-width: 600px){.navbar{padding:.85rem 1.1rem;gap:1rem;flex-wrap:wrap}.container{padding:1.75rem 1rem}h1{font-size:1.6rem}}@media (prefers-reduced-motion: reduce){*{transition:none!important}}