@keyframes steelShimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
    50% { box-shadow: 0 0 40px var(--accent-glow), 0 0 60px rgba(91, 143, 185, 0.08); }
}

@keyframes cardSlideIn {
    from { opacity: 0; transform: translateY(16px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.feed-card--active {
    animation: cardSlideIn 0.4s var(--ease-out);
}

.feed-card--tweet {
    animation: fadeInUp 0.3s var(--ease-out) backwards;
}

.feed-card--tweet:nth-child(2) { animation-delay: 0.05s; }
.feed-card--tweet:nth-child(4) { animation-delay: 0.1s; }
.feed-card--tweet:nth-child(6) { animation-delay: 0.15s; }
.feed-card--tweet:nth-child(8) { animation-delay: 0.2s; }

.collection__card {
    animation: fadeInUp 0.3s var(--ease-out) backwards;
}

.collection__card:nth-child(1) { animation-delay: 0s; }
.collection__card:nth-child(2) { animation-delay: 0.03s; }
.collection__card:nth-child(3) { animation-delay: 0.06s; }
.collection__card:nth-child(4) { animation-delay: 0.09s; }
.collection__card:nth-child(5) { animation-delay: 0.12s; }
.collection__card:nth-child(6) { animation-delay: 0.15s; }