.activate-container {
    max-width: 600px;
    margin: 3rem auto;
    padding: 0 1.5rem;
    text-align: center;
}
.activate-container h1 { margin-bottom: 1.5rem; }

.device-info {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 1rem;
    margin-bottom: 2rem;
}
.device-info .label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}
.device-info code {
    font-size: 1.125rem;
    color: var(--accent-cyan);
}
.device-info code.invalid { color: var(--accent-red); }

.tier-selection {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.tier-selection .tier-card {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    gap: 1rem;
    text-align: left;
}
.tier-selection .tier-card h3 { margin: 0; }
.tier-selection .tier-card .price { margin: 0; font-size: 1.5rem; }
.tier-selection .tier-card .features { display: none; }

@media (max-width: 640px) {
    .tier-selection .tier-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 3rem;
}