.thank-you-popup{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.8);display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-webkit-justify-content:center;-ms-flex-pack:center;justify-content:center;-webkit-box-align:center;-webkit-align-items:center;-ms-flex-align:center;align-items:center;z-index:9999;opacity:0;visibility:hidden;-webkit-transition:all .3s ease;transition:all .3s ease}.thank-you-popup.show{opacity:1;visibility:visible}.thank-you-popup-content{background:-webkit-linear-gradient(315deg,#667eea 0,#764ba2 100%);background:linear-gradient(135deg,#667eea 0,#764ba2 100%);padding:40px;border-radius:20px;text-align:center;max-width:500px;width:90%;-webkit-box-shadow:0 20px 60px rgba(0,0,0,.3);box-shadow:0 20px 60px rgba(0,0,0,.3);-webkit-transform:scale(.7) translateY(50px);-ms-transform:scale(.7) translateY(50px);transform:scale(.7) translateY(50px);-webkit-transition:all .3s ease;transition:all .3s ease;position:relative;overflow:hidden}.thank-you-popup.show .thank-you-popup-content{-webkit-transform:scale(1) translateY(0);-ms-transform:scale(1) translateY(0);transform:scale(1) translateY(0)}.thank-you-popup-content::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:-webkit-linear-gradient(45deg,transparent,rgba(255,255,255,.1),transparent);background:linear-gradient(45deg,transparent,rgba(255,255,255,.1),transparent);-webkit-transform:rotate(45deg);-ms-transform:rotate(45deg);transform:rotate(45deg);-webkit-animation:shine 2s infinite;animation:shine 2s infinite}@-webkit-keyframes shine{0%{-webkit-transform:translateX(-100%) translateY(-100%) rotate(45deg);transform:translateX(-100%) translateY(-100%) rotate(45deg)}50%{-webkit-transform:translateX(100%) translateY(100%) rotate(45deg);transform:translateX(100%) translateY(100%) rotate(45deg)}100%{-webkit-transform:translateX(-100%) translateY(-100%) rotate(45deg);transform:translateX(-100%) translateY(-100%) rotate(45deg)}}@keyframes shine{0%{-webkit-transform:translateX(-100%) translateY(-100%) rotate(45deg);transform:translateX(-100%) translateY(-100%) rotate(45deg)}50%{-webkit-transform:translateX(100%) translateY(100%) rotate(45deg);transform:translateX(100%) translateY(100%) rotate(45deg)}100%{-webkit-transform:translateX(-100%) translateY(-100%) rotate(45deg);transform:translateX(-100%) translateY(-100%) rotate(45deg)}}.thank-you-popup h2{color:#fff;font-size:2.5rem;margin-bottom:20px;font-weight:700;text-shadow:0 2px 10px rgba(0,0,0,.3)}.thank-you-popup p{color:#f0f0f0;font-size:1.2rem;margin-bottom:30px;line-height:1.6}.thank-you-popup .checkmark{width:80px;height:80px;border-radius:50%;background:#fff;margin:0 auto 30px;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-align:center;-webkit-align-items:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:center;-webkit-justify-content:center;-ms-flex-pack:center;justify-content:center;-webkit-animation:checkmarkBounce .6s ease-in-out;animation:checkmarkBounce .6s ease-in-out}@-webkit-keyframes checkmarkBounce{0%{-webkit-transform:scale(0);transform:scale(0)}50%{-webkit-transform:scale(1.2);transform:scale(1.2)}100%{-webkit-transform:scale(1);transform:scale(1)}}@keyframes checkmarkBounce{0%{-webkit-transform:scale(0);transform:scale(0)}50%{-webkit-transform:scale(1.2);transform:scale(1.2)}100%{-webkit-transform:scale(1);transform:scale(1)}}.thank-you-popup .checkmark::after{content:'✓';font-size:40px;color:#28a745;font-weight:700}.thank-you-popup .close-btn{position:absolute;top:15px;right:20px;background:0 0;border:none;font-size:30px;color:#fff;cursor:pointer;opacity:.7;-webkit-transition:opacity .3s ease;transition:opacity .3s ease}.thank-you-popup .close-btn:hover{opacity:1}@media (max-width:768px){.thank-you-popup-content{padding:30px 20px;margin:20px}.thank-you-popup h2{font-size:2rem}.thank-you-popup p{font-size:1rem}.thank-you-popup .checkmark{width:60px;height:60px}.thank-you-popup .checkmark::after{font-size:30px}}@media (max-width:480px){.thank-you-popup h2{font-size:1.8rem}.thank-you-popup-content{padding:25px 15px}}[data-theme=dark] .thank-you-popup{background-color:rgba(0,0,0,.9)}[data-theme=dark] .thank-you-popup-content{background:-webkit-linear-gradient(315deg,#2c3e50 0,#34495e 100%);background:linear-gradient(135deg,#2c3e50 0,#34495e 100%);-webkit-box-shadow:0 20px 60px rgba(0,0,0,.5);box-shadow:0 20px 60px rgba(0,0,0,.5)}[data-theme=dark] .thank-you-popup h2{color:#ecf0f1}[data-theme=dark] .thank-you-popup p{color:#bdc3c7}