.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.navbar,
.site-footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 4.5rem;
}

.brand {
    color: var(--color-heading);
    font-weight: 750;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.nav-links a {
    color: var(--color-body);
    text-decoration: none;
}

.nav-links a:hover {
    color: var(--color-primary);
}

.nav-toggle {
    display: none;
}

.cart-badge {
    display: inline-grid;
    min-width: 1.4rem;
    min-height: 1.4rem;
    place-items: center;
    padding: 0 0.25rem;
    border-radius: 999px;
    color: #fff;
    background: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 700;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.75rem;
    padding: 0.65rem 1rem;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    background: var(--color-primary);
    color: #fff;
    text-decoration: none;
    transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.button:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.button--secondary {
    border-color: var(--amc-border-strong);
    background: var(--amc-surface);
    color: var(--amc-primary-dark);
}

.card {
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    box-shadow: var(--shadow-sm);
}

.field {
    display: grid;
    gap: 0.4rem;
}

.field label {
    color: var(--color-heading);
    font-weight: 650;
}

.field input,
.field select,
.field textarea {
    width: 100%;
    min-height: 2.75rem;
    padding: 0.65rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-body);
}

.site-footer {
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.site-footer__inner {
    min-height: 4rem;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.toast-region {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    z-index: 10;
}

.toast {
    max-width: min(24rem, calc(100vw - 2rem));
    margin-top: 0.5rem;
    padding: 0.8rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    box-shadow: var(--shadow-md);
}

@media (max-width: 700px) {
    .nav-toggle {
        display: inline-flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        inset: 4.5rem 1rem auto;
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        background: var(--color-surface);
        box-shadow: var(--shadow-md);
    }

    .nav-links.is-open {
        display: flex;
    }
}