/* ═══════════════════════════════════════════
   UI Overlay Card — 이미지 풀 + 하단 오버레이
   ═══════════════════════════════════════════ */

.ui-overlay-card {
    position: relative;
    border-radius: var(--radius, 12px);
    overflow: hidden;
    background: var(--bg-raised);
    aspect-ratio: 3/4;
}

.ui-overlay-card__img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.ui-overlay-card__empty {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(30,35,45,1) 0%, rgba(20,60,50,0.8) 100%);
}
.ui-overlay-card__empty svg {
    width: var(--s-7-5);
    height: var(--s-7-5);
    opacity: .25;
    color: var(--text);
}

/* 하단 오버레이: 그라데이션 + 블러 */
.ui-overlay-card__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--s-5) var(--s-2-5, 10px) var(--s-2) var(--s-2-5, 10px);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    pointer-events: none;
}

/* 밝기별 그라데이션 (기본: 어두운 이미지 → 반투명 검정) */
.ui-overlay-card--dark .ui-overlay-card__overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.4) 50%, transparent 100%);
}
.ui-overlay-card--light .ui-overlay-card__overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.92) 0%, rgba(0,0,0,0.5) 50%, transparent 100%);
}

/* 블러 레이어 (backdrop-filter) */
.ui-overlay-card__overlay::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    backdrop-filter: var(--glass-blur-xs);
    -webkit-backdrop-filter: var(--glass-blur-xs);
    mask-image: linear-gradient(to top, black 0%, black 40%, transparent 100%);
    -webkit-mask-image: linear-gradient(to top, black 0%, black 40%, transparent 100%);
    z-index: 0;
    pointer-events: none;
}

/* 텍스트 */
.ui-overlay-card__text {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: var(--s-0);
}

.ui-overlay-card__title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: #fff;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.ui-overlay-card__subtitle {
    font-size: var(--text-xs);
    color: rgba(255,255,255,0.8);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.ui-overlay-card__meta {
    font-size: var(--text-xs);
    color: rgba(255,255,255,0.6);
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

/* 좌상단 뱃지 */
.ui-overlay-card__badge {
    position: absolute;
    top: var(--s-1-5);
    left: var(--s-1-5);
    z-index: 2;
}

/* 우하단 카운트 */
.ui-overlay-card__count {
    position: absolute;
    bottom: var(--s-1-5);
    right: var(--s-1-5);
    z-index: 2;
    background: rgba(0,0,0,0.7);
    color: #fff;
    font-size: var(--text-xs);
    font-weight: 600;
    padding: var(--s-0) var(--s-2);
    border-radius: var(--radius, 8px);
    backdrop-filter: var(--glass-blur-xs);
}

/* 호버 효과 */
.ui-overlay-card {
    transition: transform var(--duration-fast) var(--easing-smooth), box-shadow var(--duration-fast) var(--easing-smooth);
}
.ui-overlay-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,.3);
}
.ui-overlay-card:active {
    transform: translateY(0);
    box-shadow: none;
}
.ui-overlay-card.selected {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
}