/* ============================================================
   ABM Partner — АККРЕДИТАЦИИ И КЛИЕНТЫ
   Каталог компаний в виде сетки плиток: фото-полоса под шапкой,
   вводная с фильтрами и карточки с логотипами. На странице
   аккредитаций у карточки есть подпись-ссылка на сайт компании;
   на странице клиентов — только логотип.
   ============================================================ */

/* ============================================================
   ВВОДНАЯ
   Заголовок раздела в размер h2 главной страницы.
   ============================================================ */
.partners__intro {
    margin-bottom: clamp(2.25rem, 5vw, 3.75rem);
}

/* ============================================================
   ФИЛЬТР
   Пилюли переиспользуют .btn--sm; счётчик — тихий бейдж,
   у активной кнопки он светлеет вместе с текстом.
   ============================================================ */
.partners-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem 2rem;
    padding-bottom: 1.25rem;
    margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
    border-bottom: 1px solid var(--color-line-soft);
}

.partners-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.partners-filter__btn.is-active {
    border-color: var(--color-ink);
    background: var(--color-ink);
    color: var(--color-cream);
}

.partners-filter__count {
    display: inline-grid;
    place-items: center;
    min-width: 1.5rem;
    height: 1.5rem;
    padding-inline: 0.4rem;
    border-radius: var(--radius-pill);
    background: var(--color-bg-tint);
    color: var(--color-muted);
    font-family: var(--font-sans);
    font-size: var(--fs-xs);
    font-variant-numeric: tabular-nums;
    line-height: 1;
    transition:
        background-color var(--dur-base) ease,
        color var(--dur-base) ease;
}

.partners-filter__btn.is-active .partners-filter__count {
    background: rgba(251, 245, 233, 0.16);
    color: var(--color-cream);
}

.partners__hint {
    margin: 0;
    font-size: var(--fs-xs);
    line-height: var(--lh-tight);
    letter-spacing: 0.02em;
    color: var(--color-faint);
}

/* ============================================================
   СЕТКА ПЛИТОК
   ============================================================ */
.partners-grid {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: clamp(0.75rem, 1.4vw, 1.25rem);
    margin: 0;
    padding: 0;
}

.partners-card {
    position: relative;
    min-width: 0;
}

.partners-card[hidden] {
    display: none;
}

/* ===== Оболочка карточки ===== */
.partners-card__link,
.partners-card--plain {
    background: var(--color-surface);
    border: 1px solid var(--color-line-soft);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--dur-base) var(--ease-out);
}

.partners-card__link:hover,
.partners-card__link:focus-visible,
.partners-card--plain:hover {
    transform: translateY(-0.2rem);
}

/* ===== Карточка аккредитации: логотип + подпись-ссылка ===== */
.partners-card__link {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
}

.partners-card__link:focus-visible {
    outline: 2px solid var(--color-accent-strong);
    outline-offset: 3px;
}

.partners-card__link--static {
    cursor: default;
}

.partners-card__link--static:hover {
    transform: none;
}

.partners-card__link--static:hover .partners-card__name {
    color: var(--color-ink);
}

.partners-card__media {
    flex: 1;
    display: grid;
    place-items: center;
    aspect-ratio: 16 / 9;
    padding: clamp(0.75rem, 2vw, 1.5rem);
    background: var(--color-surface);
}

/* ===== Логотип ===== */
.partners-card__logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: grayscale(1);
    opacity: 0.55;
    transition:
        filter var(--dur-slow) ease,
        opacity var(--dur-slow) ease,
        transform var(--dur-slow) var(--ease-out);
}

.partners-card__link:hover .partners-card__logo,
.partners-card__link:focus-visible .partners-card__logo,
.partners-card--plain:hover .partners-card__logo {
    filter: none;
    opacity: 1;
    transform: scale(1.03);
}

.partners-card__link--static:hover .partners-card__logo {
    filter: grayscale(1);
    opacity: 0.55;
    transform: none;
}

.partners-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.85rem 1.1rem;
    border-top: 1px solid var(--color-line-soft);
    background: var(--color-surface);
}

.partners-card__name {
    font-family: var(--font-heading);
    font-size: var(--fs-base);
    font-weight: 400;
    line-height: 1.35;
    letter-spacing: 0.01em;
    color: var(--color-ink);
    transition: color var(--dur-fast) ease;
}

.partners-card__arrow {
    flex: none;
    width: 1rem;
    height: 1rem;
    color: var(--color-faint);
    opacity: 0.7;
    transition:
        color var(--dur-fast) ease,
        opacity var(--dur-fast) ease,
        transform var(--dur-base) var(--ease-out);
}

.partners-card__link:hover .partners-card__name,
.partners-card__link:focus-visible .partners-card__name {
    color: var(--color-accent-strong);
}

.partners-card__link:hover .partners-card__arrow,
.partners-card__link:focus-visible .partners-card__arrow {
    color: var(--color-accent-strong);
    opacity: 1;
    transform: translate(0.1rem, -0.1rem);
}

/* ===== Карточка клиента: только логотип ===== */
.partners-card--plain {
    display: grid;
    place-items: center;
    aspect-ratio: 16 / 9;
    padding: clamp(0.85rem, 2.4vw, 1.75rem);
}

/* ============================================================
   ПОЯВЛЕНИЕ ПРИ ФИЛЬТРАЦИИ
   Класс вешает partners.js: карточки мягко всплывают каскадом.
   ============================================================ */
@keyframes partners-card-in {
    from {
        opacity: 0;
        transform: translateY(0.85rem) scale(0.985);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.partners-grid--animate .partners-card:not([hidden]) {
    animation: partners-card-in var(--dur-slow) var(--ease-out) both;
    animation-delay: calc(var(--i, 0) * 28ms);
}

/* ============================================================
   АДАПТИВ
   ============================================================ */
@media (max-width: 75rem) {  /* 1200px */
    .partners-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (max-width: 61.25rem) {  /* 980px */
    .partners-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 53.75rem) {  /* 860px */
    .partners-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .partners__hint {
        display: none;
    }
}

@media (max-width: 30rem) {  /* 480px */
    .partners-filter {
        gap: 0.4rem;
    }

    .partners-filter__btn {
        padding: 0.55rem 0.6rem 0.55rem 0.95rem;
        font-size: var(--fs-xs);
        gap: 0.45rem;
    }

    .partners-filter__count {
        min-width: 1.35rem;
        height: 1.35rem;
        padding-inline: 0.3rem;
        font-size: var(--fs-3xs);
    }

    .partners-card__meta {
        padding: 0.7rem 0.85rem;
    }

    .partners-card__name {
        font-size: var(--fs-xs);
    }
}

@media (prefers-reduced-motion: reduce) {
    .partners-card,
    .partners-card__link,
    .partners-card--plain,
    .partners-card__media img,
    .partners-card__arrow {
        transition: none;
    }

    .partners-grid--animate .partners-card:not([hidden]) {
        animation: none;
    }
}