.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: var(--touch-target);
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.25;
    border-radius: var(--radius-sm);
    border: 1.5px solid transparent;
    cursor: pointer;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition),
        box-shadow var(--transition),
        transform var(--transition);
    white-space: nowrap;
}

.btn--primary {
    background: var(--color-accent);
    color: var(--color-accent-text);
    border-color: var(--color-accent);
}

.btn--primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    box-shadow: 0 6px 20px rgba(255, 201, 40, 0.45);
    transform: translateY(-1px);
}

.btn--primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(255, 201, 40, 0.3);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text);
    border-color: transparent;
}

.btn--ghost:hover {
    background: rgba(11, 31, 69, 0.06);
    color: var(--color-primary);
}

.btn--lg {
    padding: 16px 28px;
    font-size: 16px;
    border-radius: var(--radius-md);
}

.btn:focus-visible,
.nav__link:focus-visible,
.section__link:focus-visible,
.category-card:focus-visible,
.footer__link:focus-visible,
.footer__legal-link:focus-visible,
.social__link:focus-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
}

.article-card:has(.article-card__link:focus-visible) {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
}

.article-card__link:focus-visible {
    outline: none;
}

.btn--primary:focus-visible {
    outline-color: var(--color-primary);
}

.header__nav-toggle:focus-visible + .header__burger {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
}

.footer-accordion__toggle:focus-visible + .footer-accordion__title {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    .btn--primary:hover {
        transform: none;
    }
}