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spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.btn-collaborations{align-items:center;background:#9333ea;border:none;border-radius:8px;color:#fff;cursor:pointer;display:flex;font-size:1rem;font-weight:500;gap:8px;padding:10px 20px;position:relative;transition:all .3s}.btn-collaborations:hover{background:#7e22ce;box-shadow:0 4px 12px #9333ea4d;transform:translateY(-2px)}.notification-badge{background:#ef4444;border-radius:10px;box-shadow:0 2px 4px #0003;color:#fff;font-size:.75rem;font-weight:600;min-width:20px;padding:2px 6px;position:absolute;right:-8px;text-align:center;top:-8px}@media (max-width:768px){.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1.25rem}.container{padding:40px 16px}.profiles-grid{grid-template-columns:1fr}.messages-container{flex-direction:column;height:auto}.conversations-list{height:200px;width:100%}.messages-panel{height:400px}.collab-card{align-items:flex-start;flex-direction:column}.collab-actions{width:100%}.btn-accept,.btn-reject,.btn-revoke{flex:1 1}}