/**
 * home.css — 메인화면(허브) 전용: 히어로 캐러셀 + 게시판 카드 그리드
 * Figma 시안: 라운드 16px 카드, Gugi 디스플레이체, 초록 이용수칙 카드
 */

.home-wrapper {
    max-width: 1100px;
}

/* ---------- Hero Carousel ---------- */
.home-hero {
    position: relative;
    margin-bottom: 18px;
}

.home-hero-track {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    border-radius: var(--radius-xl);
    scrollbar-width: none;
}

.home-hero-track::-webkit-scrollbar {
    display: none;
}

.home-hero-slide {
    position: relative;
    flex: 0 0 100%;
    scroll-snap-align: start;
    height: 380px;
    background-size: cover;
    background-position: center;
    background-color: var(--chrome-bg);
    display: flex;
    align-items: flex-end;
    text-decoration: none;
    overflow: hidden;
}

.home-hero-slide::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.05) 55%);
}

.home-hero-text {
    position: relative;
    width: 100%;
    padding: 28px 80px;
    color: #fff;
}

.home-hero-badge {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    margin-bottom: 8px;
    padding: 3px 10px;
    border: 1px solid rgba(255, 255, 255, 0.65);
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.28);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.08em;
}

/* 공지 배너는 목록의 공지 배지와 같은 색을 써 같은 성격임을 드러낸다. */
.home-hero-badge--notice {
    border-color: transparent;
    background: var(--primary-color, #007aff);
    letter-spacing: 0.04em;
}

.home-hero-badge--pop {
    min-height: 28px;
    padding: 1px 5px;
    border: 0;
    background: rgba(0, 0, 0, 0.2);
}

.home-hero-title {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 400;
    line-height: 1.25;
    margin: 0 0 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.home-hero-sub {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin: 0;
    opacity: 0.9;
}

.home-hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.35);
    color: #fff;
    font-size: 1.25rem;
    cursor: pointer;
    z-index: 2;
    transition: background 0.2s;
}

.home-hero-arrow:hover {
    background: rgba(0, 0, 0, 0.6);
}

.home-hero-arrow--prev {
    left: 16px;
}

.home-hero-arrow--next {
    right: 16px;
}

.home-hero-dots {
    position: absolute;
    right: 24px;
    bottom: 18px;
    display: flex;
    gap: 8px;
    z-index: 2;
}

.home-hero-dot {
    width: 11px;
    height: 11px;
    border: none;
    border-radius: 15px;
    background: #afafaf;
    box-shadow: inset 2px 2px 6px rgba(0, 0, 0, 0.25);
    cursor: pointer;
    padding: 0;
    transition: width 0.25s, background 0.25s;
}

.home-hero-dot.active {
    width: 33px;
    background: #e8e8e8;
}

/* ---------- Board Card Grid ---------- */
.home-board-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 170px;
    grid-auto-flow: dense;
    gap: 16px;
    margin-bottom: 34px;
}

.board-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background-size: cover;
    background-position: center;
    text-decoration: none;
    display: flex;
    align-items: flex-end;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.board-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
}

.board-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0) 60%);
}

.board-card-name {
    position: relative;
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: #fff;
    padding: 16px 18px;
    line-height: 1.3;
}

/* 시안의 불규칙 그리드 근사: 세로 스팬 패턴 순환 */
.board-card--v1,
.board-card--v2,
.board-card--v5 {
    grid-row: span 2;
}

.board-card--v4 {
    grid-row: span 3;
}

/* ---------- Home Gallery ---------- */
.home-section-heading {
    margin: 0 0 14px;
    font-family: var(--font-display);
    font-size: 1.3rem;
    line-height: 1.3;
    color: var(--text-primary, #222);
}

.home-mixed-gallery {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 38px;
}

/* 각 행은 정해진 비율의 칸을 끝까지 채운다. 비대칭이어도 빈 셀이 남지 않는다. */
.home-mixed-gallery-row {
    display: grid;
    grid-template-rows: minmax(0, 1fr);
    gap: 10px;
    width: 100%;
}

.home-mixed-gallery-row--lead { grid-template-columns: 5fr 3fr; height: 320px; }
.home-mixed-gallery-row--triptych { grid-template-columns: 3fr 2fr 3fr; height: 190px; }
.home-mixed-gallery-row--asymmetric { grid-template-columns: 2fr 3fr 3fr; height: 235px; }
.home-mixed-gallery-row--duo { grid-template-columns: 1fr 1fr; height: 250px; }
.home-mixed-gallery-row--quartet { grid-template-columns: repeat(4, 1fr); height: 165px; }
.home-mixed-gallery-row--tail-1 { grid-template-columns: 1fr; height: 260px; }
.home-mixed-gallery-row--tail-2 { grid-template-columns: 1fr 1fr; height: 210px; }
.home-mixed-gallery-row--tail-3 { grid-template-columns: repeat(3, 1fr); height: 185px; }

/* POP 글 행만 브라우저가 썸네일의 실제 비율에 맞춰 열·행 크기를 보정한다. */
.home-hub-gallery .home-mixed-gallery-row[data-gallery-kind="post"] {
    transition: grid-template-columns 0.25s ease, height 0.25s ease;
}

.collage-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background-size: cover;
    background-position: center;
    text-decoration: none;
    display: flex;
    align-items: flex-end;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.collage-card:hover,
.collage-card:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
    outline: none;
}

.collage-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0) 60%);
}

.pop-collage-mark {
    position: relative;
    font-family: var(--font-display);
    color: #fff;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5);
    align-self: flex-start;
    margin: 12px;
    padding: 4px 7px;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.3);
    font-family: var(--font-body, sans-serif);
    font-size: 0.59rem;
    font-weight: 900;
    letter-spacing: 0.09em;
}

.collage-card-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 17px;
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    opacity: 0;
    transform: translateY(7px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.collage-card:hover .collage-card-overlay,
.collage-card:focus-visible .collage-card-overlay {
    opacity: 1;
    transform: translateY(0);
}

.collage-card:hover .pop-collage-mark,
.collage-card:focus-visible .pop-collage-mark {
    opacity: 0;
}

.collage-post-title {
    display: -webkit-box;
    margin-bottom: 7px;
    overflow: hidden;
    font-size: 1rem;
    line-height: 1.4;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
}

.collage-post-author {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.75rem;
}

/* 이미지 없는 게시판 폴백 그라데이션 */
.board-card--fallback-0 { background-image: linear-gradient(135deg, #1f2937, #4b5563); }
.board-card--fallback-1 { background-image: linear-gradient(135deg, #0f2027, #2c5364); }
.board-card--fallback-2 { background-image: linear-gradient(135deg, #232526, #414345); }
.board-card--fallback-3 { background-image: linear-gradient(135deg, #42275a, #734b6d); }
.board-card--fallback-4 { background-image: linear-gradient(135deg, #141e30, #243b55); }
.board-card--fallback-5 { background-image: linear-gradient(135deg, #3a1c71, #d76d77); }

@media (max-width: 1100px) {
    .home-board-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .home-mixed-gallery-row--lead { height: 280px; }
    .home-mixed-gallery-row--triptych { height: 175px; }
    .home-mixed-gallery-row--asymmetric { height: 210px; }
    .home-mixed-gallery-row--duo { height: 220px; }
}

@media (max-width: 820px) {
    .home-mixed-gallery-row--lead { height: 240px; }
    .home-mixed-gallery-row--triptych { height: 160px; }
    .home-mixed-gallery-row--asymmetric { height: 190px; }
    .home-mixed-gallery-row--duo { height: 200px; }
    .home-mixed-gallery-row--quartet { height: 145px; }
}

@media (max-width: 768px) {
    .home-wrapper {
        max-width: 100%;
    }

    .home-hero-slide {
        height: 200px;
    }

    .home-hero-text {
        padding: 16px 52px 32px;
    }

    .home-hero-title {
        font-size: 1.25rem;
        -webkit-line-clamp: 2;
    }

    .home-hero-sub {
        font-size: 0.8125rem;
    }

    .home-hero-arrow {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }

    .home-hero-dots {
        right: 14px;
        bottom: 10px;
    }

    .home-hero-dot {
        width: 8px;
        height: 8px;
    }

    .home-hero-dot.active {
        width: 22px;
    }

    .home-board-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 110px;
        gap: 10px;
        margin-bottom: 24px;
    }

    .board-card-name {
        font-size: 0.9375rem;
        padding: 10px 12px;
    }

    .board-card:hover {
        transform: none;
        box-shadow: none;
    }

    /* 모바일에서는 세로 3칸 카드가 화면을 넘기므로 2칸까지만 허용한다. */
    .board-card--v4 {
        grid-row: span 2;
    }

    .home-section-heading {
        margin-bottom: 10px;
        font-size: 1.05rem;
    }

    .home-mixed-gallery-row {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        grid-template-rows: none;
        grid-auto-rows: 150px;
        height: auto !important;
    }

    .home-mixed-gallery-row > :last-child:nth-child(odd) {
        grid-column: span 2;
    }

    .collage-card-overlay {
        padding: 12px;
        background: rgba(0, 0, 0, 0.82);
    }

    /* 터치 중에만 데스크톱 호버와 같은 정보를 드러낸다. */
    .collage-card:active .collage-card-overlay {
        opacity: 1;
        transform: translateY(0);
    }

    .collage-card:active .pop-collage-mark {
        opacity: 0;
    }

    .collage-post-title {
        margin-bottom: 3px;
        font-size: 0.82rem;
        -webkit-line-clamp: 2;
    }

    .collage-post-author {
        font-size: 0.65rem;
    }

}