.spinner-container{display:flex;justify-content:center;align-items:center;height:100vh}.loading-spinner{width:50px;height:50px;border:5px solid #f3f3f3;border-top:5px solid #3498db;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}:root{--primary-color: #4a6fa5;--secondary-color: #ff7e5f;--accent-color: #6c63ff;--success-color: #22AE73;--error-color: #e53e3e;--light-color: #f8f9fa;--dark-color: #2d3748}.callback-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem;text-align:center;background:linear-gradient(135deg,#ffffffe6,#f8f9fae6);position:relative;overflow:hidden}.callback-container:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:url(https://images.unsplash.com/photo-1506929562872-bb421503ef21?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80) no-repeat center center;background-size:cover;z-index:-1;opacity:.15}.loading-state{background:#fffffff2}.loading-spinner{width:50px;height:50px;border:5px solid rgba(74,111,165,.2);border-radius:50%;border-top-color:var(--primary-color);animation:spin 1s ease-in-out infinite;margin-bottom:2rem}.error-state{background:#fffffff2}.error-icon{width:60px;height:60px;background-color:var(--error-color);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700;margin-bottom:1.5rem}.error-message{color:var(--error-color);max-width:500px;margin:1rem auto;padding:1rem;background:#e53e3e1a;border-radius:8px}.success-heading{font-size:2.5rem;color:var(--primary-color);margin-bottom:.5rem;font-weight:700}.success-subheading{font-size:1.2rem;color:var(--dark-color);margin-bottom:2rem;opacity:.8}.success-animation{margin-bottom:2rem}.checkmark{width:100px;height:100px}.checkmark__circle{stroke-dasharray:166;stroke-dashoffset:166;stroke-width:2;stroke-miterlimit:10;stroke:var(--success-color);fill:none;animation:stroke .6s cubic-bezier(.65,0,.45,1) forwards}.checkmark__check{transform-origin:50% 50%;stroke-dasharray:48;stroke-dashoffset:48;stroke:var(--success-color);stroke-width:2;stroke-miterlimit:10;animation:stroke .3s cubic-bezier(.65,0,.45,1) .8s forwards}.user-profile-card{background:#fff;padding:2rem;border-radius:12px;box-shadow:0 10px 30px #0000001a;margin:2rem 0;max-width:400px;width:100%}.user-avatar{width:80px;height:80px;background:linear-gradient(135deg,var(--primary-color) 0%,var(--accent-color) 100%);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700;margin:0 auto 1rem}.user-name{font-size:1.5rem;color:var(--dark-color);margin-bottom:.5rem}.user-email{color:#718096;font-size:1rem}.action-button{padding:.8rem 2rem;border-radius:50px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .3s ease;border:none;margin:.5rem}.primary-button{background:linear-gradient(135deg,var(--primary-color) 0%,var(--accent-color) 100%);color:#fff;box-shadow:0 4px 15px #6c63ff4d}.primary-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #6c63ff66}.travel-tips{margin-top:2rem;padding:1.5rem;background:#fffc;border-radius:12px;max-width:500px}.travel-tips h3{color:var(--primary-color);margin-bottom:1rem}.travel-tips ul{list-style:none;text-align:left;padding-left:1.5rem}.travel-tips li{margin-bottom:.5rem;position:relative;color:var(--dark-color)}.travel-tips li:before{content:"✈️";position:absolute;left:-1.5rem}@keyframes stroke{to{stroke-dashoffset:0}}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.callback-container{padding:1rem}.success-heading{font-size:2rem}.user-profile-card{padding:1.5rem}}