/* =========================================================
   cases-grid — архив «Кейсы».
   Поиск + фильтр (AJAX, клиентский JS) + мозаика карточек без пагинации.
   Мозаика: сетка шире контейнера — правая колонка обрезается краем секции.
   ========================================================= */

.cases-section {
    padding: 0 0 var(--section-pad);
    overflow: hidden;
}

/* Поиск — пилюля с иконкой слева */
.cases-search {
    position: relative;
    max-width: 420px;
    margin-bottom: 24px;
}

.cases-search-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    pointer-events: none;
    opacity: 0.6;
}

.cases-search-input {
    width: 100%;
    height: 56px;
    padding: 0 24px 0 52px;
    background-color: var(--color-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-btn);
    font-family: var(--font-body);
    font-size: 18px;
    color: var(--color-text-dark);
    outline: none;
    transition: border-color 0.25s ease;
}

.cases-search-input::placeholder {
    color: var(--color-text-muted);
    opacity: 0.6;
}

.cases-search-input:focus {
    border-color: var(--color-accent-orange);
}

/* Фильтр: активный — тёмная пилюля, остальные — просто текст */
.cases-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 40px;
}

.cases-filter-btn {
    padding: 12px 24px;
    background: none;
    border: none;
    border-radius: var(--radius-btn);
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--color-bg-dark);
    cursor: pointer;
    transition: background-color 0.25s ease, color 0.25s ease;
}

.cases-filter-btn:hover {
    background-color: #f6f6f6;
}

.cases-filter-btn.is-active {
    background-color: var(--color-bg-dark);
    color: var(--color-white);
}

/* Мозаика */
.cases-mosaic {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 180px;
    grid-auto-flow: dense;
    gap: 16px;
    margin-right: -220px;
}

.case-card {
    position: relative;
    display: block;
    border-radius: var(--radius-card-lg);
    overflow: hidden;
    text-decoration: none;
}

.case-card--tall {
    grid-row: span 2;
}

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

.case-card-image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.case-card:hover .case-card-image {
    transform: scale(1.03);
}

/* Ховер: без затемнения — логотип сверху, название и «Подробнее» снизу */
.case-card-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px;
    color: var(--color-white);
    opacity: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0) 35%, rgba(0, 0, 0, 0.5) 100%);
    transition: opacity 0.3s ease;
}

.case-card:hover .case-card-overlay,
.case-card:focus-visible .case-card-overlay {
    opacity: 1;
}

.case-card-logo-box {
    align-self: flex-start;
    display: flex;
    align-items: center;
    padding: 8px 16px;
    background-color: var(--color-white);
    border-radius: var(--radius-btn);
}

.case-card-logo {
    height: 24px;
    width: auto;
    max-width: 120px;
    object-fit: contain;
}

.case-card-bottom {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.case-card-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: clamp(20px, 1.8vw, 26px);
    line-height: 1.2;
}

.case-card-more {
    font-family: var(--font-ui);
    font-weight: 700;
    font-size: 16px;
}

@media (max-width: 1024px) {
    .cases-mosaic {
        margin-right: 0;
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 640px) {
    .cases-search {
        max-width: 100%;
    }

    .cases-mosaic {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 140px;
    }
}