.payment-page {
    min-height: 100vh;
}

.payment-header {
    position: relative;
    z-index: 2;
}

.payment-main {
    background: #f8fafc;
    isolation: isolate;
}

.payment-grid {
    z-index: -1;
    background-image: linear-gradient(rgba(5, 11, 20, 0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(5, 11, 20, 0.025) 1px, transparent 1px);
    background-size: 36px 36px;
    mask-image: linear-gradient(to bottom, black, transparent 68%);
}

.payment-intro {
    animation: payment-enter 500ms ease-out both;
}

.payment-input {
    width: 100%;
    min-height: 48px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    background: #fff;
    padding: 0.75rem 1rem;
    color: #0f172a;
    font: inherit;
    font-size: 0.875rem;
    transition: border-color 150ms ease, box-shadow 150ms ease;
}

.payment-input::placeholder {
    color: #94a3b8;
}

.payment-input:hover {
    border-color: #94a3b8;
}

.payment-input:focus {
    border-color: #10b981;
    outline: none;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.14);
}

.payment-input[aria-invalid="true"] {
    border-color: #dc2626;
}

.payment-aside {
    animation: payment-enter 600ms 100ms ease-out both;
}

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

@media (prefers-reduced-motion: reduce) {
    .payment-intro,
    .payment-aside {
        animation: none;
    }
}