.notebook-btn{display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;transition:all .3s ease;font-family:inherit;border-radius:50%;position:relative;z-index:10}.notebook-btn:focus{outline:none}.notebook-btn--overlay{position:absolute;top:8px;right:8px;width:36px;height:36px;background:transparent;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);color:rgba(255,255,255,.6);opacity:.8;border:none}.notebook-btn--overlay:hover{opacity:1;transform:scale(1.1);background:rgba(26,54,54,.9);color:white;box-shadow:0 4px 12px rgba(26,54,54,.3)}.notebook-btn--overlay.notebook-btn--saved{background:white;color:#1A3636;opacity:1;transform:scale(1);box-shadow:0 4px 12px rgba(0,0,0,.2)}.notebook-btn--overlay.notebook-btn--saved:hover{background:#f8f9fa;color:#0f2626;transform:scale(1.1);box-shadow:0 6px 16px rgba(0,0,0,.25)}.notebook-btn--overlay.notebook-btn--success{background:#10b981;color:white;animation:notebookSuccess .3s ease}@keyframes notebookSuccess{0%{transform:scale(1)}50%{transform:scale(1.2)}to{transform:scale(1)}}.notebook-btn--inline{background:#f8f9fa;border:2px solid #e9ecef;color:#1A3636;padding:.75rem 1.5rem;border-radius:50px;font-weight:600;display:inline-flex;align-items:center;gap:.5rem;margin-left:8px}.notebook-btn--inline:hover{background:#e9ecef;border-color:#dee2e6;transform:scale(1.05)}.notebook-btn--inline.notebook-btn--saved{background:#1A3636;border-color:#1A3636;color:white}.notebook-btn--inline.notebook-btn--saved:hover{background:#0f2626;border-color:#0f2626;transform:translateY(-1px);box-shadow:0 4px 12px rgba(26,54,54,.3)}.notebook-btn--inline.notebook-btn--success{background:#10b981;border-color:#10b981;color:white;animation:notebookSuccess .3s ease}.notebook-btn--small{width:28px;height:28px}.notebook-btn--medium{width:36px;height:36px}.notebook-btn--large{width:44px;height:44px}.notebook-btn:disabled{opacity:.3;cursor:not-allowed;pointer-events:none}.notebook-btn:disabled:hover{transform:none;opacity:.3}@media (max-width:768px){.notebook-btn--overlay{top:8px;right:8px;width:32px;height:32px}.notebook-btn--inline{padding:.5rem 1rem;font-size:.9rem}}.notebook-btn:disabled:not(.notebook-btn--disabled){opacity:.7;cursor:wait}