:root {
    --auth-backdrop-start: #50a3a2;
    --auth-backdrop-end: #53e3a6;
}

.auth-setup-backdrop-body {
    background: var(--auth-backdrop-start);
    position: relative;
}

.auth-setup-backdrop {
    position: fixed;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
    background: linear-gradient(to bottom right, var(--auth-backdrop-start) 0%, var(--auth-backdrop-end) 100%);
}

.auth-setup-backdrop::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 55% 45% at 12% 18%, rgba(255, 255, 255, 0.12), transparent 55%),
        radial-gradient(ellipse 45% 40% at 88% 82%, rgba(255, 255, 255, 0.08), transparent 50%);
}

.auth-setup-backdrop__bubbles {
    position: absolute;
    inset: 0;
    margin: 0;
    padding: 0;
    list-style: none;
}

.auth-setup-backdrop__bubbles li {
    position: absolute;
    display: block;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.15);
    bottom: -160px;
    animation: auth-backdrop-square 25s infinite linear;
}

.auth-setup-backdrop__bubbles li:nth-child(1) { left: 10%; }
.auth-setup-backdrop__bubbles li:nth-child(2) {
    left: 20%;
    width: 80px;
    height: 80px;
    animation-delay: 2s;
    animation-duration: 17s;
}
.auth-setup-backdrop__bubbles li:nth-child(3) { left: 25%; animation-delay: 4s; }
.auth-setup-backdrop__bubbles li:nth-child(4) {
    left: 40%;
    width: 60px;
    height: 60px;
    animation-duration: 22s;
    background-color: rgba(255, 255, 255, 0.25);
}
.auth-setup-backdrop__bubbles li:nth-child(5) { left: 70%; }
.auth-setup-backdrop__bubbles li:nth-child(6) {
    left: 80%;
    width: 120px;
    height: 120px;
    animation-delay: 3s;
    background-color: rgba(255, 255, 255, 0.2);
}
.auth-setup-backdrop__bubbles li:nth-child(7) {
    left: 32%;
    width: 160px;
    height: 160px;
    animation-delay: 7s;
}
.auth-setup-backdrop__bubbles li:nth-child(8) {
    left: 55%;
    width: 20px;
    height: 20px;
    animation-delay: 15s;
    animation-duration: 40s;
}
.auth-setup-backdrop__bubbles li:nth-child(9) {
    left: 25%;
    width: 10px;
    height: 10px;
    animation-delay: 2s;
    animation-duration: 40s;
    background-color: rgba(255, 255, 255, 0.3);
}
.auth-setup-backdrop__bubbles li:nth-child(10) {
    left: 90%;
    width: 160px;
    height: 160px;
    animation-delay: 11s;
}

@keyframes auth-backdrop-square {
    0% { transform: translateY(0); }
    100% { transform: translateY(-110vh) rotate(600deg); }
}

.auth-setup-backdrop-body > .container {
    position: relative;
    z-index: 1;
    max-width: 1080px;
    padding: clamp(1rem, 3vw, 2rem);
}