@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-base:#0a0e1a;--bg-surface:#111827;--bg-elevated:#1a2234;--bg-hover:#1f2a42;--border:#ffffff14;--border-strong:#ffffff26;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#4b5563;--accent:#6366f1;--accent-hover:#4f46e5;--accent-glow:#6366f140;--accent-light:#818cf8;--success:#22c55e;--warning:#f59e0b;--danger:#ef4444;--info:#38bdf8;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px;--shadow-sm:0 1px 3px #0000004d;--shadow-md:0 4px 16px #0006;--shadow-lg:0 8px 32px #00000080;--shadow-glow:0 0 40px #6366f126;--sidebar-w:220px;--transition:.2s ease}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-size:15px}body{background:var(--bg-base);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Inter,-apple-system,sans-serif;line-height:1.6}img{max-width:100%;display:block}button{cursor:pointer;font:inherit;background:0 0;border:none}a{color:inherit;text-decoration:none}input,textarea{background:var(--bg-base);border:1px solid var(--border-strong);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);font:inherit;transition:border-color var(--transition);outline:none;margin-top:4px;padding:.5rem .75rem}input:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-glow)}label{color:var(--text-secondary);margin-bottom:12px;font-size:.8rem;font-weight:500;display:block}.btn{border-radius:var(--radius-sm);transition:all var(--transition);white-space:nowrap;align-items:center;gap:6px;padding:.5rem 1rem;font-size:.85rem;font-weight:500;display:inline-flex}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);box-shadow:var(--shadow-glow)}.btn-secondary{background:var(--bg-elevated);color:var(--text-primary);border:1px solid var(--border-strong)}.btn-secondary:hover{background:var(--bg-hover)}.btn-ghost{color:var(--text-secondary);padding:.4rem .75rem}.btn-ghost:hover{color:var(--text-primary);background:var(--bg-elevated)}.btn-danger{color:var(--danger);background:#ef444426;border:1px solid #ef44444d}.btn-danger:hover{background:var(--danger);color:#fff}.btn-full{justify-content:center;width:100%}.btn:disabled{opacity:.5;cursor:not-allowed}.app-layout{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-w);background:var(--bg-surface);border-right:1px solid var(--border);z-index:100;flex-direction:column;min-height:100vh;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar-logo{border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:1.5rem 1.25rem;display:flex}.logo-icon-sm{font-size:1.5rem}.logo-text{color:var(--text-primary);font-size:1.1rem;font-weight:700}.sidebar-nav{flex-direction:column;flex:1;gap:4px;padding:1rem .75rem;display:flex}.nav-item{border-radius:var(--radius-sm);color:var(--text-secondary);transition:all var(--transition);align-items:center;gap:10px;padding:.65rem .75rem;font-size:.88rem;font-weight:500;display:flex}.nav-item:hover{color:var(--text-primary);background:var(--bg-elevated)}.nav-item.active{color:var(--accent-light);background:#6366f11f;border:1px solid #6366f133}.sidebar-user{border-top:1px solid var(--border);align-items:center;gap:8px;padding:1rem;display:flex}.user-info{flex:1;align-items:center;gap:8px;min-width:0;display:flex}.user-avatar{object-fit:cover;border:2px solid var(--border-strong);border-radius:50%;width:32px;height:32px}.user-avatar-placeholder{background:var(--bg-elevated);width:32px;height:32px;color:var(--text-secondary);border-radius:50%;justify-content:center;align-items:center;display:flex}.user-details{min-width:0}.user-name{white-space:nowrap;text-overflow:ellipsis;font-size:.78rem;font-weight:600;display:block;overflow:hidden}.user-role{border-radius:4px;padding:1px 6px;font-size:.68rem}.role-admin{color:var(--accent-light);background:#6366f126}.role-user{color:var(--success);background:#22c55e1f}.role-pending{color:var(--warning);background:#f59e0b1f}.btn-signout{border-radius:var(--radius-sm);width:32px;height:32px;color:var(--text-muted);transition:all var(--transition);flex-shrink:0;justify-content:center;align-items:center;display:flex}.btn-signout:hover{color:var(--danger);background:#ef44441a}.main-content{margin-left:var(--sidebar-w);max-width:calc(100vw - var(--sidebar-w));flex:1;padding:1.5rem 2rem}.page-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.5rem;display:flex}.header-title{color:var(--accent-light);align-items:center;gap:12px;display:flex}.header-title h1{color:var(--text-primary);font-size:1.5rem;font-weight:700}.header-subtitle{color:var(--text-secondary);font-size:.82rem;display:block}.header-actions{flex-wrap:wrap;gap:8px;display:flex}.search-bar-wrapper{margin-bottom:1.5rem}.search-bar{max-width:480px;position:relative}.search-icon{color:var(--text-muted);pointer-events:none;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.search-bar input{border-radius:var(--radius-md);height:42px;margin:0;padding-left:40px;font-size:.9rem}.books-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:1rem;display:grid}.book-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);position:relative;overflow:hidden}.book-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-2px)}.book-missing{opacity:.55}.book-cover{aspect-ratio:3/4;background:var(--bg-elevated);position:relative;overflow:hidden}.book-cover img{object-fit:cover;width:100%;height:100%;transition:transform .3s}.book-card:hover .book-cover img{transform:scale(1.04)}.book-no-cover{background:linear-gradient(135deg, var(--bg-elevated), #1e293b);justify-content:center;align-items:center;width:100%;height:100%;font-size:2.5rem;display:flex}.book-status-dot{border:2px solid var(--bg-surface);border-radius:50%;width:8px;height:8px;position:absolute;bottom:8px;right:8px}.book-has-cards{background:#0009;border-radius:4px;padding:1px 4px;font-size:.75rem;position:absolute;top:6px;right:6px}.book-missing-badge{font-size:.75rem;position:absolute;top:6px;left:6px}.book-info{padding:.75rem}.book-title{-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:4px;font-size:.78rem;font-weight:600;line-height:1.3;display:-webkit-box;overflow:hidden}.book-authors{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;font-size:.72rem;overflow:hidden}.book-meta{flex-wrap:wrap;gap:6px;margin-top:6px;display:flex}.book-meta span{color:var(--text-muted);background:var(--bg-base);border-radius:4px;padding:1px 6px;font-size:.68rem}.grid-loading{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:1rem;display:grid}.book-skeleton{aspect-ratio:3/4.6;background:linear-gradient(90deg, var(--bg-surface) 25%, var(--bg-elevated) 50%, var(--bg-surface) 75%);border-radius:var(--radius-md);background-size:400% 100%;animation:1.5s infinite shimmer}.card-skeleton{background:linear-gradient(90deg, var(--bg-surface) 25%, var(--bg-elevated) 50%, var(--bg-surface) 75%);border-radius:var(--radius-md);background-size:400% 100%;height:180px;animation:1.5s infinite shimmer}@keyframes shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}.cards-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1rem;display:grid}.study-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);transition:all var(--transition);padding:1.25rem}.study-card:hover{border-color:var(--accent);box-shadow:var(--shadow-sm)}.study-card-header{justify-content:space-between;align-items:flex-start;gap:8px;margin-bottom:8px;display:flex}.study-card-header h3{font-size:.95rem;font-weight:600}.study-card-actions{flex-shrink:0;gap:4px;display:flex}.study-card-actions button{border-radius:var(--radius-sm);width:28px;height:28px;color:var(--text-muted);transition:all var(--transition);justify-content:center;align-items:center;display:flex}.study-card-actions button:hover{color:var(--text-primary);background:var(--bg-elevated)}.study-card-actions .btn-delete:hover{color:var(--danger);background:#ef44441a}.card-reference{color:var(--accent-light);margin-bottom:8px;font-size:.75rem;font-style:italic}.card-tags{flex-wrap:wrap;gap:4px;margin-bottom:10px;display:flex}.card-summary{color:var(--text-secondary);font-size:.82rem;line-height:1.5}.card-book-ref{border-top:1px solid var(--border);color:var(--text-muted);margin-top:10px;padding-top:10px;font-size:.75rem}.badge{background:var(--bg-elevated);color:var(--text-secondary);border:1px solid var(--border);border-radius:20px;padding:2px 8px;font-size:.72rem;display:inline-block}.badge-isbn{color:var(--accent-light);border-color:#6366f14d}.badge-status.status-processed{color:var(--success);background:#22c55e1a;border-color:#22c55e4d}.badge-status.status-pending{color:var(--warning);background:#f59e0b1a;border-color:#f59e0b4d}.badge-status.status-error{color:var(--danger);background:#ef44441a;border-color:#ef44444d}.badge-status.status-no_metadata_found{color:var(--text-muted);background:#6b72801a}.tag{color:var(--accent-light);background:#6366f11f;border:1px solid #6366f133;border-radius:20px;padding:2px 8px;font-size:.7rem;display:inline-block}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:200;background:#000000bf;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.modal-content{background:var(--bg-surface);border:1px solid var(--border-strong);border-radius:var(--radius-xl);width:100%;max-width:760px;max-height:90vh;box-shadow:var(--shadow-lg);position:relative;overflow-y:auto}.modal-form{max-width:540px;padding:2rem}.modal-form h2{margin-bottom:1.5rem;font-size:1.2rem}.modal-close{width:32px;height:32px;color:var(--text-secondary);transition:all var(--transition);z-index:1;border-radius:50%;justify-content:center;align-items:center;display:flex;position:absolute;top:1rem;right:1rem}.modal-close:hover{color:var(--text-primary);background:var(--bg-elevated)}.modal-body{gap:0;display:flex}.modal-cover{border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;gap:1rem;width:180px;padding:1.5rem;display:flex}.modal-cover img{border-radius:var(--radius-md);width:100%;box-shadow:var(--shadow-md)}.modal-no-cover{aspect-ratio:3/4;background:var(--bg-elevated);border-radius:var(--radius-md);justify-content:center;align-items:center;width:100%;font-size:3rem;display:flex}.modal-details{flex:1;padding:1.5rem}.modal-details h2{margin-bottom:.5rem;font-size:1.2rem}.detail-authors{color:var(--text-secondary);margin-bottom:.75rem;font-size:.88rem}.detail-badges{flex-wrap:wrap;gap:6px;margin-bottom:.75rem;display:flex}.detail-tags{flex-wrap:wrap;gap:4px;margin-bottom:.75rem;display:flex}.detail-description{color:var(--text-secondary);max-height:120px;margin-bottom:.75rem;font-size:.83rem;line-height:1.6;overflow-y:auto}.detail-meta{color:var(--text-muted);font-size:.78rem}.modal-admin-actions{border-top:1px solid var(--border);flex-wrap:wrap;gap:6px;margin-top:1.5rem;padding-top:1rem;display:flex}.edit-form{flex-direction:column;gap:2px;display:flex}.edit-row{grid-template-columns:1fr 1fr;gap:1rem;display:grid}.edit-actions{border-top:1px solid var(--border);justify-content:flex-end;gap:8px;margin-top:1rem;padding-top:.75rem;display:flex}.pagination{border-top:1px solid var(--border);justify-content:center;align-items:center;gap:1rem;margin-top:2rem;padding-top:1rem;display:flex}.page-info{color:var(--text-secondary);font-size:.85rem}.empty-state{color:var(--text-muted);text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:.75rem;padding:4rem;display:flex}.empty-state h3{color:var(--text-secondary)}.empty-state p{max-width:320px;font-size:.88rem}.login-page{background:radial-gradient(ellipse at 60% 30%, #6366f11f 0%, transparent 60%), var(--bg-base);justify-content:center;align-items:center;min-height:100vh;display:flex;position:relative;overflow:hidden}.login-card{z-index:10;background:var(--bg-surface);border:1px solid var(--border-strong);border-radius:var(--radius-xl);width:100%;max-width:400px;box-shadow:var(--shadow-lg), 0 0 60px #6366f11a;text-align:center;padding:3rem 2.5rem;position:relative}.login-logo .logo-icon{margin-bottom:.75rem;font-size:3rem;display:block}.login-logo h1{background:linear-gradient(135deg, var(--accent-light), #c4b5fd);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:2rem;font-weight:800}.login-logo p{color:var(--text-secondary);margin-top:.5rem;margin-bottom:2rem;font-size:.9rem}.btn-google{color:#374151;border-radius:var(--radius-md);width:100%;transition:all var(--transition);box-shadow:var(--shadow-sm);background:#fff;justify-content:center;align-items:center;gap:12px;margin-bottom:1.5rem;padding:.85rem 1.5rem;font-size:.95rem;font-weight:600;display:flex}.btn-google:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-google:disabled{opacity:.7;cursor:not-allowed;transform:none}.login-footer{color:var(--text-muted);font-size:.78rem}.login-bg{pointer-events:none;position:absolute;inset:0}.floating-book{opacity:.08;font-size:2.5rem;animation:8s ease-in-out infinite float;position:absolute}.book-1{animation-delay:0s;top:10%;left:10%}.book-2{animation-delay:1.5s;top:20%;right:15%}.book-3{animation-delay:3s;bottom:25%;left:20%}.book-4{animation-delay:4.5s;bottom:15%;right:10%}.book-5{animation-delay:6s;top:50%;left:5%}@keyframes float{0%,to{transform:translateY(0)rotate(-5deg)}50%{transform:translateY(-20px)rotate(5deg)}}.loading-screen,.pending-screen{background:var(--bg-base);justify-content:center;align-items:center;min-height:100vh;display:flex}@keyframes spin{to{transform:rotate(360deg)}}.pending-card{background:var(--bg-surface);border:1px solid var(--border-strong);border-radius:var(--radius-xl);text-align:center;max-width:400px;padding:3rem}.pending-icon{margin-bottom:1rem;font-size:3rem;display:block}.pending-card h2{margin-bottom:.75rem}.pending-card p{color:var(--text-secondary);font-size:.9rem}.toast{border-radius:var(--radius-md);z-index:300;max-width:360px;box-shadow:var(--shadow-lg);padding:.85rem 1.25rem;font-size:.88rem;font-weight:500;animation:.3s slideIn;position:fixed;bottom:2rem;right:2rem}.toast-success{color:var(--success);background:#22c55e26;border:1px solid #22c55e4d}.toast-error{color:var(--danger);background:#ef444426;border:1px solid #ef44444d}.toast-info{color:var(--accent-light);background:#6366f126;border:1px solid #6366f14d}@keyframes slideIn{0%{opacity:0;transform:translate(120%)}to{opacity:1;transform:translate(0)}}.login-page{background:var(--bg-base);min-height:100vh;display:flex;position:relative;overflow:hidden}.login-bg{flex-direction:column;flex:1;justify-content:center;align-items:center;gap:3rem;display:flex;position:relative;overflow:hidden}.login-orb{pointer-events:none;border-radius:50%;position:absolute}.login-orb--1{background:radial-gradient(circle,#6366f124 0%,#0000 70%);width:500px;height:500px;animation:8s ease-in-out infinite alternate orb;top:50%;left:50%;transform:translate(-50%,-50%)}.login-orb--2{background:radial-gradient(circle,#818cf814 0%,#0000 70%);width:300px;height:300px;animation:12s ease-in-out infinite alternate-reverse orb;bottom:10%;right:10%}@keyframes orb{0%{transform:translate(-50%,-50%)scale(1)}to{transform:translate(-50%,-50%)scale(1.2)}}.login-tagline{z-index:1;text-align:center;max-width:460px;padding:0 2rem;position:relative}.login-tagline h2{background:linear-gradient(135deg, var(--text-primary) 0%, var(--accent-light) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:.75rem;font-size:1.75rem;font-weight:700;line-height:1.3}.login-tagline p{color:var(--text-secondary);font-size:.95rem}.login-card{background:var(--bg-surface);border-right:1px solid var(--border);z-index:1;flex-direction:column;flex-shrink:0;justify-content:center;align-items:center;gap:2.25rem;width:440px;min-height:100vh;padding:3rem 2.75rem;display:flex;position:relative}.login-logo{text-align:center;flex-direction:column;align-items:center;gap:1rem;display:flex}.login-svg-icon{filter:drop-shadow(0 0 20px #6366f199);width:72px;height:72px;animation:3s ease-in-out infinite logoFloat}.login-actions{flex-direction:column;gap:.75rem;width:100%;display:flex}@keyframes logoFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.login-logo h1{background:linear-gradient(135deg, var(--text-primary) 0%, var(--accent-light) 100%);-webkit-text-fill-color:transparent;letter-spacing:-.5px;-webkit-background-clip:text;background-clip:text;font-size:2rem;font-weight:700}.login-logo p{color:var(--text-secondary);font-size:.9rem}.btn-google{color:#1f2937;border-radius:var(--radius-md);cursor:pointer;background:#fff;border:none;justify-content:center;align-items:center;gap:.75rem;width:100%;padding:.85rem 1.5rem;font-family:inherit;font-size:.95rem;font-weight:600;transition:transform .15s,box-shadow .15s,background .15s;display:inline-flex;box-shadow:0 2px 8px #00000040}.btn-google:hover:not(:disabled){background:#f8f9fa;transform:translateY(-1px);box-shadow:0 6px 20px #00000059}.btn-google:active:not(:disabled){transform:translateY(0);box-shadow:0 2px 8px #0003}.btn-google:disabled{opacity:.5;cursor:not-allowed}.login-footer{color:var(--text-muted);text-align:center;font-size:.78rem}.login-divider{width:100%;color:var(--text-muted);align-items:center;gap:.75rem;font-size:.78rem;display:flex}.login-divider:before,.login-divider:after{content:"";background:var(--border);flex:1;height:1px}.floating-books{width:320px;height:320px;position:relative}.floating-book{opacity:.6;filter:drop-shadow(0 0 12px #6366f14d);-webkit-user-select:none;user-select:none;font-size:2.5rem;animation:linear infinite bookFloat;position:absolute}.book-1{animation-duration:6s;animation-delay:0s;top:10%;left:15%}.book-2{animation-duration:8s;animation-delay:-2s;top:25%;right:10%}.book-3{animation-duration:7s;animation-delay:-4s;top:55%;left:5%}.book-4{animation-duration:9s;animation-delay:-1s;bottom:15%;right:20%}.book-5{animation-duration:6.5s;animation-delay:-3s;top:70%;left:45%}@keyframes bookFloat{0%,to{transform:translateY(0)rotate(-3deg)}33%{transform:translateY(-18px)rotate(3deg)}66%{transform:translateY(-8px)rotate(-1deg)}}.login-bg:before{content:"";background:radial-gradient(circle,#6366f11f 0%,#0000 70%);border-radius:50%;width:400px;height:400px;animation:8s ease-in-out infinite alternate orb;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.loading-screen{background:var(--bg-base);flex-direction:column;justify-content:center;align-items:center;gap:1rem;min-height:100vh;display:flex}.spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:36px;height:36px;animation:.8s linear infinite spin}@media (width<=768px){:root{--sidebar-w:64px}.logo-text,.nav-item span,.user-details{display:none}.sidebar-logo{justify-content:center;padding:1rem}.nav-item{justify-content:center;padding:.65rem}.sidebar-user,.user-info{justify-content:center}.main-content{padding:1rem}.books-grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr))}.modal-body{flex-direction:column}.modal-cover{border-right:none;border-bottom:1px solid var(--border);width:100%}.login-page{flex-direction:column}.login-card{border-right:none;border-bottom:1px solid var(--border);width:100%;min-height:auto}.login-bg{display:none}}