:root{--bg:#f6f7f8;--surface:#fff;--text:#111827;--muted:#6b7280;--line:#e5e7eb;--accent:#14532d;--accent2:#166534;--danger:#b91c1c;--success:#166534;--shadow:0 12px 30px rgba(17,24,39,.06)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.shell{width:min(1040px,calc(100% - 32px));margin:0 auto}.narrow{width:min(560px,calc(100% - 32px));padding-top:64px}.topbar{background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.topbar-inner{height:68px;display:flex;align-items:center;justify-content:space-between}.topbar a{color:var(--muted);text-decoration:none}.hero{padding:70px 0 34px}.eyebrow{font-size:12px;letter-spacing:.17em;font-weight:800;color:var(--accent)}h1{font-size:clamp(36px,5vw,66px);line-height:1.02;max-width:880px;margin:12px 0 18px;letter-spacing:-.04em}h2{font-size:22px;margin:0 0 20px}.hero p{font-size:19px;line-height:1.6;max-width:730px;color:var(--muted)}.card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:26px;margin:18px 0;box-shadow:var(--shadow)}label{display:grid;gap:8px;font-weight:650;font-size:14px}input{width:100%;border:1px solid #d1d5db;border-radius:12px;padding:13px 14px;font:inherit;outline:none;background:#fff}input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(20,83,45,.1)}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:16px 0}.results{display:grid;gap:8px;margin-top:12px}.book-row{width:100%;border:1px solid var(--line);background:#fff;padding:14px 16px;border-radius:14px;display:flex;align-items:center;justify-content:space-between;text-align:left;cursor:pointer}.book-row:hover{border-color:#9ca3af}.book-row small{display:block;color:var(--muted);margin-top:4px}.book-info{min-width:0;padding-right:12px}.catalog-meta{font-size:12px;line-height:1.45}.book-row.unavailable{opacity:.55;cursor:not-allowed}.availability{font-size:12px;font-weight:800;padding:6px 9px;border-radius:999px;white-space:nowrap}.availability.yes{background:#ecfdf5;color:#166534}.availability.no{background:#f3f4f6;color:#6b7280}.selected{border-radius:14px;background:#f0fdf4;border:1px solid #bbf7d0;padding:15px;margin-bottom:16px;display:grid;gap:4px}.selected span{font-size:13px;color:var(--muted)}.selected.empty{background:#f9fafb;border-color:var(--line);color:var(--muted)}.btn{border:0;border-radius:12px;background:var(--accent);color:white;padding:13px 18px;font-weight:800;font-size:15px;cursor:pointer}.btn:hover{background:var(--accent2)}.btn.secondary{background:#111827}.btn.danger{background:#991b1b}.fineprint,.muted{color:var(--muted);font-size:13px}.alert{padding:14px 16px;border-radius:12px;margin:16px 0;font-weight:650}.alert.success{background:#ecfdf5;color:#166534;border:1px solid #bbf7d0}.alert.error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}footer{padding:42px 0;color:var(--muted);font-size:13px}.admin-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:32px 0 12px}.admin-head h1{font-size:34px;margin:0}.admin-actions{display:flex;gap:10px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--line);vertical-align:top}th{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}.status{font-size:12px;font-weight:800;padding:5px 8px;border-radius:999px;display:inline-block}.status.borrowed{background:#eff6ff;color:#1d4ed8}.status.overdue{background:#fef2f2;color:#b91c1c}.status.returned{background:#f3f4f6;color:#4b5563}.inline{display:flex;gap:8px;align-items:end;flex-wrap:wrap}.inline input{min-width:150px}.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.section-title h2{margin:0}.search-label{font-size:14px}
@media(max-width:700px){.grid-2{grid-template-columns:1fr}.hero{padding-top:46px}.card{padding:20px;border-radius:16px}.book-row{align-items:flex-start;gap:10px}.admin-head{align-items:flex-start;flex-direction:column}.admin-actions{width:100%}.admin-actions .btn{flex:1;text-align:center}h1{font-size:42px}}