.main-content {
    padding-top: 80px;
    padding-bottom: 60px;
}

@keyframes pulse-glow {
    0% {
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
        border-color: var(--border-color);
    }

    50% {
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), 0 0 25px rgba(255, 255, 255, 0.07);
        border-color: rgba(255, 255, 255, 0.15);
    }

    100% {
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
        border-color: var(--border-color);
    }
}

.breathing-card {
    animation: pulse-glow 5s infinite ease-in-out;
}

@keyframes ambient-pulse {
    0% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(0.95);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.05);
    }
    100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(0.95);
    }
}

.ambient-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 140%;
    height: 140%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.35) 0%, rgba(255, 255, 255, 0.1) 40%, transparent 70%);
    filter: blur(80px);
    z-index: -1;
    pointer-events: none;
    border-radius: 50%;
    animation: ambient-pulse 5s infinite ease-in-out;
}