/* Basis-Reset */
html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

/* Hintergrund-Effekt (Glow) */
.bg {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, #062F06, transparent 60%),   /* dunkles Grün unten links */
        radial-gradient(circle at 80% 20%, #0FAF6A, transparent 60%),   /* helles Smaragd oben rechts */
        radial-gradient(circle at 40% 60%, #3CC9A8, transparent 65%);   /* Mint in der Mitte */
    filter: blur(55px);
    animation:
        bg-move 22s ease-in-out infinite alternate,
        bg-glow 5s ease-in-out infinite alternate;
    z-index: 2; /* über Canvas, unter Card */
}

/* Bewegung */
@keyframes bg-move {
    0%   { transform: translate(0, 0); }
    100% { transform: translate(-60px, 40px); }
}

/* Stärkeres Glimmen */
@keyframes bg-glow {
    0%   { opacity: 0.6; transform: scale(1); }
    100% { opacity: 1;   transform: scale(1.15); }
}

/* Grundgerüst */
body {
    font-family: 'Segoe UI', Roboto, sans-serif;
    background: #0B3D0B; /* Tannengrün */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100dvh; /* visueller Viewport, besser für Mobile */
    padding: 20px;
    box-sizing: border-box;
    color: rgb(78,78,78);
}

/* Card (Glass + Glow) */
.card {
    position: relative;
    z-index: 3; /* immer ganz oben */

    background: rgba(15, 61, 15, 0.40); /* transparente Glass-Card */
    padding: 30px;
    border-radius: 18px;

    border: 1px solid rgba(207,255,208,0.55);
    box-shadow:
        0 0 45px rgba(207,255,208,0.32),
        0 0 95px rgba(207,255,208,0.22),
        0 14px 40px rgba(0,0,0,0.50);

    text-align: center;
    width: 100%;
    max-width: 450px;
    color: #CFFFD0;

    backdrop-filter: blur(10px);
}

.card a img {
    display: block;
    margin: 0 auto;
    filter: drop-shadow(0 0 6px rgba(207,255,208,0.4));
}

/* Canvas – Segel-Lichtfäden */
canvas#sail {
    position: fixed;
    inset: 0;
    z-index: 1; /* unter Glow, über Body */
    pointer-events: none;
    background: #062F06;
}

/* Mobile */
@media (max-width: 480px) {
    .card {
        padding: 20px;
    }
    h1 {
        font-size: 22px;
    }
}

/* Footer */
.footer {
    display: inline-block;
    margin-top: 15px;
    color: #CFFFD0;
    font-size: 13px;
    opacity: 0.9;
}