.library-dialog{color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:22px;width:min(1040px,calc(100vw - 32px));max-width:none;height:min(850px,calc(100dvh - 32px));max-height:calc(100dvh - 32px);padding:0;box-shadow:0 24px 90px #0008;overflow:auto}
.library-dialog::backdrop{background:#071018bc;backdrop-filter:blur(5px)}
.library-titlebar{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 22px 12px 32px;background:#12333e;color:#f5ffff}
.library-titlebar .library-kicker{margin:0}
.library-titlebar #libraryClose{background:#ffffff13;color:#fff;border:1px solid #ffffff45;min-height:40px;flex-shrink:0}
.library-header{padding:16px 32px 22px;background:linear-gradient(125deg,#123f42,#14283c);color:#f5ffff;position:relative}
.library-kicker{text-transform:uppercase;letter-spacing:.15em;font-size:10px;font-weight:700;color:#7ad8ce;margin:0 0 12px}
.library-header h2{font-size:30px;letter-spacing:-.03em;margin:0 72px 10px 0;line-height:1.1}
.library-header>p:not(.library-kicker){font-size:13px;line-height:1.6;max-width:620px;color:#bed4dc;margin:0}
.library-stats{display:block;margin-top:20px;font-size:13px;font-weight:600;color:#a8eee1}
.library-body{padding:24px 32px;background:var(--surface)}
.library-search-label{display:block;font-size:12px;font-weight:600;margin-bottom:7px}
#librarySearch{box-sizing:border-box;width:100%;min-height:44px;padding:10px 14px;border:1px solid var(--border);border-radius:9px;background:var(--surface-2);color:var(--text);font:inherit}
.library-regions{display:flex;flex-wrap:wrap;gap:7px;margin:14px 0}
.library-regions button{border:1px solid var(--border);border-radius:30px;padding:9px 12px;min-height:40px;color:var(--text);background:var(--surface-2);font:inherit;font-size:12px;cursor:pointer}
.library-regions button[aria-pressed=true]{color:white;background:#087f79;border-color:#087f79}
.library-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
.library-case{min-width:0;border:1px solid var(--border);background:var(--bg);border-radius:14px;padding:20px;display:flex;flex-direction:column;align-items:stretch}
.library-case-eyebrow{display:flex;justify-content:space-between;gap:8px;color:var(--text-muted);font-size:11px;font-weight:600}
.library-case-eyebrow span:first-child{color:var(--accent-hover)}
.library-case h3{font-size:17px;line-height:1.35;margin:13px 0 9px;text-transform:none;letter-spacing:-.015em}
.library-anatomy{font-size:12px;line-height:1.7;color:var(--text-muted);margin:0 0 18px;flex:1}
.library-case label{display:flex;flex-direction:column;gap:7px;font-size:11px;font-weight:600}
.library-case select{max-width:100%;min-height:42px;padding:8px;font:inherit;font-size:13px;border:1px solid var(--border);border-radius:7px;background:var(--surface-2);color:var(--text)}
.library-reference{font-size:11px;color:var(--text-muted);line-height:1.5;margin:9px 0 14px}
.library-case .btn{min-height:42px;white-space:normal}
.library-no-results{padding:24px;color:var(--text-muted)}
.library-footer{padding:18px 32px 24px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:18px}
.library-footer p{font-size:12px;line-height:1.6;color:var(--text-muted);max-width:620px;margin:0}
.library-footer a{flex-shrink:0}
#libraryNotice{font-size:12px;line-height:1.5;min-height:1em;color:var(--text-muted)}
.library-dialog :focus-visible,.library-welcome :focus-visible{outline:3px solid var(--accent-hover);outline-offset:3px}
.viewer-empty .card.library-welcome{max-width:580px;padding:30px;text-align:left;border:1px solid var(--border);border-radius:18px;background:var(--surface);box-shadow:0 18px 60px #0003}
.viewer-empty .library-welcome{pointer-events:auto;max-height:100%;overflow:auto}
.library-welcome h3{font-size:28px;line-height:1.15;letter-spacing:-.035em;margin:10px 0}
.library-welcome p{font-size:13px;line-height:1.7}
.library-welcome-stats{font-size:12px;color:var(--accent-hover);font-weight:600}
.library-welcome-actions{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 0}
.library-welcome-actions .btn{min-height:42px}
.library-welcome ol{list-style:none;display:flex;gap:18px;padding:18px 0 0;margin:20px 0 0;border-top:1px solid var(--border);counter-reset:steps}
.library-welcome li{font-size:11px;line-height:1.5;color:var(--text-muted);flex:1}
.library-welcome li::before{counter-increment:steps;content:'0' counter(steps);display:block;color:var(--accent-hover);font-size:11px;font-weight:700;margin-bottom:5px}
@media(max-width:650px){#librarySearch,.library-case select{font-size:16px}.library-dialog{width:calc(100vw - 16px);height:calc(100dvh - 16px);max-height:calc(100dvh - 16px);border-radius:15px}.library-header{padding:22px 18px}.library-header h2{font-size:25px}.library-titlebar{padding:10px 16px 10px 18px}.library-titlebar #libraryClose{min-height:44px}.library-body{padding:18px}.library-grid{grid-template-columns:1fr}.library-footer{padding:18px;flex-direction:column;align-items:flex-start}.library-regions button{min-height:44px}.viewer-empty .card.library-welcome{padding:22px;max-width:calc(100% - 28px);box-sizing:border-box}.library-welcome h3{font-size:24px}.library-welcome ol{gap:12px}.library-welcome-actions .btn{min-height:44px}.library-welcome li{font-size:10px}}
@media(max-height:480px){.library-welcome ol{display:none}.viewer-empty .card.library-welcome{padding:14px 22px}.library-welcome h3{font-size:22px}.library-welcome-actions{margin-top:10px}.library-welcome p{margin:8px 0}}