:root{--primary:#3b82f6;--primary-hover:#2563eb;--bg-color:#f8fafc;--card-bg:#fff;--text-main:#0f172a;--text-muted:#64748b;--border:#e2e8f0;--error:#ef4444}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.app-container{background:var(--card-bg);flex-direction:column;max-width:600px;height:100vh;margin:0 auto;display:flex;box-shadow:0 0 10px #0000000d}.app-header{background:var(--primary);color:#fff;z-index:10;justify-content:space-between;align-items:center;padding:16px 20px;display:flex;position:sticky;top:0}.app-header h1{font-size:1.2rem;font-weight:600}.app-main{flex:1;padding-bottom:70px;overflow-y:auto}.bottom-nav{background:var(--card-bg);border-top:1px solid var(--border);z-index:10;justify-content:space-around;max-width:600px;margin:0 auto;padding:10px 0;display:flex;position:fixed;bottom:0;left:0;right:0}.nav-item{color:var(--text-muted);flex-direction:column;align-items:center;gap:4px;font-size:.75rem;text-decoration:none;display:flex}.nav-item.active{color:var(--primary)}.view-container{padding:20px}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;margin-bottom:20px;padding:20px}.mt-20{margin-top:20px}.text-small{font-size:.85rem}.text-muted{color:var(--text-muted)}.flex-between{justify-content:space-between;align-items:center;display:flex}h1,h2,h3{color:var(--text-main);margin-bottom:16px}.form-group{margin-bottom:16px}.form-group label{color:var(--text-main);margin-bottom:8px;font-size:.9rem;font-weight:500;display:block}input[type=text],input[type=password],textarea,select{border:1px solid var(--border);background:#fff;border-radius:8px;width:100%;padding:12px;font-size:1rem}input:focus,textarea:focus,select:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #3b82f61a}button{cursor:pointer;background:0 0;border:none;font-family:inherit}.btn-primary{background:var(--primary);color:#fff;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:12px 20px;font-size:1rem;font-weight:500;transition:background .2s;display:flex}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.full-width{width:100%}.btn-icon{color:var(--text-muted);border-radius:8px;justify-content:center;align-items:center;padding:8px;display:flex}.btn-icon.outline{border:1px solid var(--border)}.btn-icon:hover{color:var(--text-main);background:#f1f5f9}.app-header .btn-icon{color:#fff}.app-header .btn-icon:hover{background:#ffffff1a}.delete-btn{color:var(--error)}.delete-btn:hover{color:#dc2626;background:#fef2f2}.auth-container{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.auth-card{background:var(--card-bg);border-radius:16px;width:100%;max-width:400px;padding:32px;box-shadow:0 4px 6px -1px #0000001a}.auth-header{text-align:center;margin-bottom:32px}.auth-icon{color:var(--primary);margin-bottom:16px}.auth-footer{text-align:center;margin-top:24px;font-size:.9rem}.auth-footer a{color:var(--primary);font-weight:500}.error-banner{color:var(--error);text-align:center;background:#fef2f2;border-radius:8px;margin-bottom:20px;padding:12px;font-size:.9rem}.dashboard-header{gap:12px;margin-bottom:24px;display:flex}.search-bar{flex:1;display:flex;position:relative}.search-bar input{padding-left:40px}.search-icon{color:var(--text-muted);position:absolute;top:50%;left:12px;transform:translateY(-50%)}.book-grid{gap:16px;display:grid}.book-card{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;gap:16px;padding:12px;display:flex}.book-cover{background:#f1f5f9;border-radius:4px;flex-shrink:0;width:80px;height:120px;overflow:hidden}.book-cover img{object-fit:cover;width:100%;height:100%}.cover-placeholder{width:100%;height:100%;color:var(--text-muted);text-transform:uppercase;justify-content:center;align-items:center;font-size:1.5rem;font-weight:600;display:flex}.book-info{flex-direction:column;flex:1;display:flex}.book-info h3{margin:0 0 4px;font-size:1.1rem;line-height:1.3}.book-info .author{color:var(--text-muted);margin-bottom:12px;font-size:.9rem}.location-badge{color:var(--text-main);background:#f1f5f9;border-radius:4px;align-self:flex-start;margin-top:auto;padding:4px 8px;font-size:.8rem;display:inline-block}.list-group{list-style:none}.list-item{border:1px solid var(--border);background:#fff;border-radius:8px;margin-bottom:8px;padding:16px}.search-results{flex-direction:column;gap:8px;max-height:300px;margin-top:16px;display:flex;overflow-y:auto}.result-item{border:1px solid var(--border);cursor:pointer;border-radius:8px;gap:12px;padding:12px;transition:background .2s;display:flex}.result-item:hover{background:#f1f5f9}.result-item .thumb{object-fit:cover;border-radius:4px;width:40px;height:60px}.loader{text-align:center;color:var(--text-muted);padding:40px}.full-page{justify-content:center;align-items:center;height:100vh;display:flex}textarea{resize:vertical;min-height:72px;font-family:inherit}.form-row{gap:12px;display:flex}.form-row .form-group{flex:1;min-width:0}.empty-state{text-align:center;color:var(--text-muted);border:1px dashed var(--border);border-radius:12px;padding:48px 24px;line-height:1.5}.count-line{margin-bottom:12px}.book-notes{margin-top:8px;line-height:1.4}.card-actions{align-self:flex-end;gap:4px;margin-top:8px;display:flex}.list-item .card-actions{align-self:center;margin-top:0}.btn-icon-label{margin-left:4px;font-size:.75rem;font-weight:600}.result-item{text-align:left;background:var(--card-bg);width:100%;color:var(--text-main);align-items:center;font-size:1rem}.result-item .thumb.cover-placeholder{background:#f1f5f9;font-size:.9rem}.modal-backdrop{z-index:100;background:#0f172a80;justify-content:center;align-items:flex-end;padding:0;display:flex;position:fixed;inset:0}.modal{background:var(--card-bg);width:100%;max-width:600px;max-height:90vh;padding:24px;padding-bottom:calc(24px + env(safe-area-inset-bottom));border-radius:16px 16px 0 0;overflow-y:auto}.modal-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.modal-header h3{margin:0}@media (width>=640px){.modal-backdrop{align-items:center;padding:20px}.modal{border-radius:16px}}.success-banner{color:#15803d;text-align:center;background:#f0fdf4;border-radius:8px;margin-bottom:20px;padding:12px;font-size:.9rem}