/* Normale Buttons */
.duration-btn {
    padding: 6px 14px;
    border-radius: 6px;
    background-color: #374151;
    color: #fff;
    font-weight: bold;
    font-size: 0.9rem;
    transition: background-color 0.2s ease;
}

.duration-btn:hover {
    background-color: #4b5563;
}

/* Lifetime Button kleiner */
.lifetime-btn {
    position: relative;
    background: linear-gradient(90deg, #555, #888, #555);
    color: #fff;
    font-size: 1rem; /* kleinerer Text */
    font-weight: 900;
    padding: 8px 18px; /* kleineres Padding */
    border: none;
    border-radius: 8px; /* kompaktere Ecken */
    cursor: pointer;
    overflow: hidden;
    text-shadow: 0 0 3px rgba(255,255,255,0.6);
    animation: pulseGlow 2.5s infinite;
    box-shadow: 0 0 12px rgba(255,255,255,0.4), 0 0 25px rgba(255,255,255,0.15) inset;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    z-index: 1;
}

/* Lifetime Text */
.lifetime-btn span {
    position: relative;
    z-index: 3;
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: 0.4px;
    /* text-transform entfernt, damit nur "Lifetime" angezeigt wird */
    text-shadow: 0 0 1px rgba(0,0,0,0.4), 0 0 6px rgba(255,255,255,0.5);
}


/* Pulsieren - dezenter */
@keyframes pulseGlow {
    0%   { box-shadow: 0 0 12px rgba(255,255,255,0.4), 0 0 25px rgba(255,255,255,0.15) inset; }
    50%  { box-shadow: 0 0 25px rgba(255,255,255,0.6), 0 0 50px rgba(255,255,255,0.25) inset; }
    100% { box-shadow: 0 0 12px rgba(255,255,255,0.4), 0 0 25px rgba(255,255,255,0.15) inset; }
}

/* Strahlen von innen - weniger dominant */
.lifetime-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(255,255,255,0.5) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    border-radius: 50%;
    animation: radiate 3s infinite ease-out;
    z-index: 0;
}

@keyframes radiate {
    0% { width: 0; height: 0; opacity: 0.4; }
    50% { width: 280%; height: 280%; opacity: 0.2; }
    100% { width: 0; height: 0; opacity: 0; }
}

/* Hover-Effekt */
.lifetime-btn:hover {
    transform: translateY(-6px) scale(1.08);
    box-shadow: 0 0 25px rgba(255,255,255,0.7), 0 0 50px rgba(255,255,255,0.2) inset;
}

/* Funken - kleiner und weicher */
.spark {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255,255,255,0.8);
    border-radius: 50%;
    pointer-events: none;
    animation: fly 1.2s linear forwards;
    box-shadow: 0 0 6px white, 0 0 12px rgba(0,255,255,0.6);
}

@keyframes fly {
    0% { transform: translate(0, 0) scale(1); opacity: 1; }
    100% { transform: translate(var(--x), var(--y)) scale(0); opacity: 0; }
}