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#dee2e6;border-radius:16px;font-size:12px;color:#6c757d}.save-status,.create-status{font-size:12px;padding:4px 8px;border-radius:4px;font-weight:500;animation:fadeIn .2s ease}.save-status.success,.create-status.success{background:#d4edda;color:#155724}.save-status.error,.create-status.error{background:#f8d7da;color:#721c24}.collaborator-manager{position:relative}.shared-document-loading,.shared-document-error,.shared-document-login{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:2rem;background:linear-gradient(135deg,#667eea,#764ba2)}.login-card{background:#fff;border-radius:12px;padding:2.5rem;width:100%;max-width:400px;box-shadow:0 10px 40px #0000001a;text-align:center}.login-card h2{margin:0 0 1rem;color:#333;font-size:1.5rem}.document-description{color:#666;margin-bottom:2rem;font-size:.95rem}.action-buttons{display:flex;flex-direction:column;gap:1rem}.btn-access,.btn-login,.btn-register,.btn-home{padding:12px 24px;border:none;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s ease}.btn-access,.btn-login{background:#4a90e2;color:#fff}.btn-access:hover,.btn-login:hover{background:#3a80d2;transform:translateY(-1px)}.btn-register{background:#f8f9fa;color:#333;border:1px solid #dee2e6}.btn-register:hover{background:#e9ecef}.btn-home{background:#6c757d;color:#fff;margin-top:1rem}.divider{margin:.5rem 0;color:#999;font-size:.9rem}.share-info{margin-top:2rem;padding-top:1rem;border-top:1px solid #eee;font-size:.85rem;color:#888}.shared-document-error h2{color:#fff;margin-bottom:1rem}.shared-document-error p{color:#fff;opacity:.9;margin-bottom:1.5rem}.spinner{width:40px;height:40px;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin 1s ease-in-out infinite;margin-bottom:1rem}@keyframes 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.3s}.btn-primary:hover:not(:disabled){opacity:.9}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.alert{padding:.75rem;border-radius:5px;margin-bottom:1.5rem}.alert-error{background-color:#fee;color:#c33;border:1px solid #fcc}.auth-link{text-align:center;margin-top:1.5rem;color:#666}.auth-link a{color:#667eea;text-decoration:none;font-weight:500}.auth-link a:hover{text-decoration:underline}.navbar{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:#fff;box-shadow:0 2px 10px #0000001a}.nav-brand h2{margin:0;color:#333}.nav-user{display:flex;align-items:center;gap:1rem}.nav-user span{color:#666}.btn-logout{padding:.5rem 1rem;background:#ef4444;color:#fff;border:none;border-radius:5px;cursor:pointer;font-weight:500}.btn-logout:hover{background:#dc2626}.main-content{max-width:1200px;margin:0 auto;padding:2rem}.demo-section{margin-top:3rem;text-align:center}.loading-container{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:100vh}.spinner{width:40px;height:40px;border:4px solid #f3f3f3;border-top:4px solid #667eea;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}