.rewards-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:9999;backdrop-filter:blur(4px);animation:fadeIn .3s ease-out}.rewards-modal-frame-container{position:relative;width:90%;max-width:450px;height:90%;max-height:600px;background:white;border-radius:16px;box-shadow:0 20px 40px rgba(0,0,0,.2);overflow:hidden;animation:slideUp .3s ease-out}.rewards-modal-frame{width:100%;height:100%;border:none;border-radius:16px}.rewards-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s ease;text-decoration:none;outline:none}.rewards-btn:focus{box-shadow:0 0 0 3px rgba(102,126,234,.3)}.rewards-btn-invite{background:linear-gradient(135deg,#667eea,#764ba2);color:white}.rewards-btn-invite:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(102,126,234,.3)}.rewards-btn-redeem{background:linear-gradient(135deg,#ff6b6b,#feca57);color:white}.rewards-btn-redeem:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,107,107,.3)}.rewards-btn-secondary{background:#f8f9fa;color:#666;border:1px solid #dee2e6}.rewards-btn-secondary:hover{background:#e9ecef}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}@media (max-width:768px){.rewards-modal-frame-container{width:95%;height:95%;max-height:none}.rewards-btn{padding:10px 20px;font-size:14px}}@media (prefers-color-scheme:dark){.rewards-modal-overlay{background:rgba(0,0,0,.7)}.rewards-modal-frame-container{background:#1a1a1a}}