.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    transition:
        background-color var(--transition-fast),
        color var(--transition-fast),
        box-shadow var(--transition-base),
        transform var(--transition-base);
    cursor: pointer;
    border: 1px solid transparent;
}

.btn--primary {
    background-color: var(--primary);
    color: var(--white);
}

.btn--primary:hover {
    background-color: var(--primary-hover);
}

.btn--outline {
    background-color: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn--outline:hover {
    background-color: var(--primary);
    color: var(--white);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-accent);
}

.btn:active {
    transform: translateY(0);
}

.btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

/* ------------------------------
   Card
   ------------------------------ */
.card {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-lg);
    background-color: var(--white);
    border: 1px solid var(--accent-border-strong);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-accent);
    transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

.card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-accent-hover);
    transform: translateY(-4px);
}

@media (min-width: 640px) {
    .card {
        padding: 1.75rem;
    }
}

.card__top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-md);
}

.card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background-color: transparent;
    background-image: linear-gradient(135deg, var(--accent-ring) 0%, var(--accent-border) 100%);
    color: var(--accent);
    flex-shrink: 0;
    transition: box-shadow var(--transition-base), color var(--transition-base);
}

/* O gradiente cobre o background-color, então o hover usa um anel interno */
.card:hover .card__icon {
    box-shadow: inset 0 0 0 1px var(--accent-border-strong);
    color: var(--accent-dark);
}

.card__icon img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    mix-blend-mode: multiply;
}

.card__content {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
}

.card__title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    line-height: var(--leading-snug);
    color: var(--primary);
    margin-bottom: var(--space-sm);
}

.card__text {
    font-size: var(--text-sm);
    color: var(--text-muted);
    line-height: var(--leading-relaxed);
}

/* ------------------------------
   Section title
   ------------------------------ */
.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 1.3rem + 1.6vw, 2.5rem);
    line-height: var(--leading-heading);
    letter-spacing: -0.01em;
    color: var(--primary);
    margin-bottom: var(--section-header-gap);
    text-align: center;
    padding-bottom: var(--space-md);
    position: relative;
}

/* Título seguido de descrição: a descrição é quem leva o espaço até o conteúdo */
.section-title:has(+ p) {
    margin-bottom: 1.25rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 56px;
    height: 3px;
    background-color: var(--accent);
    border-radius: 2px;
}

/* ------------------------------
   Archive card (blog listing)
   ------------------------------ */
.archive-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background-color: var(--white);
    border: 1px solid var(--accent-border-strong);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

.archive-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-accent-hover);
    transform: translateY(-4px);
}

.archive-card:has(a:focus-visible) {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-ring);
}

.archive-card__image {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background-color: var(--background-alt);
    border-bottom: 1px solid var(--accent-border);
}

.archive-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 600ms cubic-bezier(0.22, 1, 0.36, 1);
}

.archive-card:hover .archive-card__image img {
    transform: scale(1.03);
}

/* Data acima do título (ordem visual), sem alterar o HTML */
.archive-card__body {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1.25rem var(--space-lg) var(--space-lg);
}

.archive-card__title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    line-height: var(--leading-snug);
    margin-bottom: var(--space-sm);
}

.archive-card__title a {
    color: var(--primary);
    transition: color var(--transition-fast);
}

/* Link do título cobre o card inteiro */
.archive-card__title a::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
}

.archive-card__title a:focus-visible {
    outline: none;
}

.archive-card:hover .archive-card__title a,
.archive-card__title a:focus-visible {
    color: var(--accent-text);
}

.archive-card__meta {
    order: -1;
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent-text);
    margin-bottom: var(--space-sm);
}

.archive-card__excerpt {
    font-size: var(--text-sm);
    color: var(--text-muted);
    line-height: var(--leading-relaxed);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ------------------------------
   Post taxonomy (categories & tags)
   ------------------------------ */
.single-content__footer {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border);
}

.post-taxonomy {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.post-taxonomy__label {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.post-taxonomy__item {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.9rem;
    font-size: var(--text-sm);
    color: var(--primary);
    background-color: var(--background);
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.post-taxonomy__item:hover,
.post-taxonomy__item:focus-visible {
    background-color: var(--accent-tint);
    border-color: var(--accent);
    color: var(--accent-text);
}

/* ------------------------------
   Post navigation
   ------------------------------ */
.post-navigation {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border);
}

.post-navigation__link {
    display: inline-flex;
    flex-direction: column;
    gap: var(--space-xs);
    max-width: 320px;
    text-decoration: none;
}

.post-navigation__link--next {
    margin-left: auto;
    align-items: flex-end;
    text-align: right;
}

.post-navigation__label {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-text);
}

.post-navigation__title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    line-height: var(--leading-snug);
    color: var(--text);
    transition: color var(--transition-fast);
}

.post-navigation__link:hover .post-navigation__title,
.post-navigation__link:focus-visible .post-navigation__title {
    color: var(--accent-text);
}

/* ------------------------------
   Search form
   ------------------------------ */
.search-form {
    display: flex;
    gap: var(--space-sm);
    max-width: 480px;
    margin: var(--space-lg) auto 0;
}

.search-form .search-field {
    flex: 1;
    min-width: 0;
    padding: var(--space-sm) var(--space-md);
    background-color: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast);
}

.search-form .search-field:hover:not(:focus-visible) {
    border-color: var(--accent-border);
}

.search-form .search-field:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.search-form .search-submit {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 var(--space-lg);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--white);
    background-color: var(--primary);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.search-form .search-submit:hover {
    background-color: var(--primary-hover);
}

.btn { max-width: 100%; min-height: 44px; text-align: center; }
svg.bi { display: inline-block; width: 1em; height: 1em; flex-shrink: 0; vertical-align: -0.125em; }