* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
    background:
        radial-gradient(900px 520px at 70% 18%, rgba(255, 255, 255, 0.10), transparent 60%),
        radial-gradient(700px 420px at 12% 0%, rgba(96, 165, 250, 0.22), transparent 55%),
        radial-gradient(800px 520px at 100% 8%, rgba(59, 130, 246, 0.18), transparent 62%),
        linear-gradient(180deg, #050914 0%, #070f24 42%, #0b1a3a 100%);
}

.container {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.container::before {
    content: '';
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 200px;
    background: url(tree.png);
    z-index: 1;
}

.container::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 12% 20%, rgba(255, 255, 255, 0.20) 0 1px, transparent 1.2px),
        radial-gradient(circle at 26% 14%, rgba(255, 255, 255, 0.16) 0 1px, transparent 1.2px),
        radial-gradient(circle at 48% 22%, rgba(255, 255, 255, 0.18) 0 1px, transparent 1.2px),
        radial-gradient(circle at 62% 12%, rgba(255, 255, 255, 0.14) 0 1px, transparent 1.2px),
        radial-gradient(circle at 78% 26%, rgba(255, 255, 255, 0.17) 0 1px, transparent 1.2px),
        radial-gradient(circle at 90% 16%, rgba(255, 255, 255, 0.14) 0 1px, transparent 1.2px),
        radial-gradient(520px 280px at 22% 6%, rgba(59, 130, 246, 0.18), transparent 60%),
        radial-gradient(640px 320px at 84% 0%, rgba(96, 165, 250, 0.14), transparent 62%);
    opacity: 0.9;
}

.container .circle .greeting::after {
    content: 'Amigo Oculto — Natal 2025';
    position: absolute;
    inset: -100px -200px;
    font-size: 1.1em;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    color: rgba(255, 255, 255, 0.92);
    text-shadow: 0 10px 28px rgba(0, 0, 0, 0.38);
}

.container .circle {
    position: absolute;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    width: 350px;
    height: 350px;
    background: radial-gradient(circle at 30% 28%, rgba(255, 255, 255, 1) 0%, rgba(255, 255, 255, 0.92) 45%, rgba(255, 255, 255, 0.84) 100%);
    border: 2px solid rgba(255, 255, 255, 0.22);
    border-radius: 50%;
    box-shadow:
        0 26px 80px rgba(0, 0, 0, 0.45),
        0 0 0 10px rgba(255, 255, 255, 0.05),
        0 0 80px rgba(255, 255, 255, 0.18);
}

.container .circle::before {
    content: '';
    position: absolute;
    inset: -200px -300px;
    background: url(santa.png);
    background-position: center;
    background-repeat: no-repeat;
    background-size: 600px;
    animation: animate 5s ease-in-out infinite;
}

@keyframes animate {

    0%,
    100% {
        transform: translateY(-25px);
    }

    50% {
        transform: translateY(25px);
    }
}

.container .circle::after {
    content: 'Feliz Natal';
    position: absolute;
    inset: -165px -200px;
    font-size: 3.2em;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 14px 38px rgba(0, 0, 0, 0.5);
}

@media (max-width: 520px) {
    .container .circle {
        width: 310px;
        height: 310px;
    }

    .container .circle::before {
        inset: -190px -160px;
        background-size: 80vw;
    }

    .container .circle::after {
        font-size: 2.6em;
        inset: -150px -200px;
    }
}