/* =========================================================
    FORUM ARCHIVE SUBPAGE STYLES (PREMIUM TRENDY SPEC)
========================================================= */

.page-archive-forum {
    min-height: 100%;
    padding-bottom: 140px;
    background-color: var(--sub-white);
    color: var(--sub-black);
    word-break: keep-all;
}

.archive-forum-section {
    padding: 0 0 60px;
    position: relative;
    overflow: hidden;
}

.page-archive-forum .sub-hero.sub-pad--hero {
    padding-bottom: 0;
}

.page-archive-forum .sub-hero__rule {
    margin: 40px 0;
}

.page-archive-forum .archive-forum-section__more {
    margin-top: 48px;
    margin-bottom: 72px;
}

/* Background Soft Atmosphere */
.archive-forum-section__circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.35;
}

.archive-forum-section__circle--one {
    top: 40px;
    right: -100px;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(244, 61, 48, 0.12) 0%, rgba(255, 255, 255, 0) 70%);
}

.archive-forum-section__circle--two {
    bottom: 100px;
    left: -120px;
    width: 480px;
    height: 480px;
    background: radial-gradient(circle, rgba(30, 79, 161, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
}

/* =========================================================
    FORUM ARCHIVE LIST LAYOUT
    (.archive-forum-section__more, .btn-archive-pill은
    archive-exhibition에서도 재사용해 css/sub/common.css로 이동함)
========================================================= */

.archive-forum-list {
    display: flex;
    flex-direction: column;
    gap: 120px;
    position: relative;
    z-index: 1;
}

.archive-forum-item {
    position: relative;
}

.archive-forum-item__grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 52px;
    align-items: stretch;
}

/* Poster Card */
.archive-forum-item__poster {
    width: 100%;
    aspect-ratio: 1 / 1.414;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    background-color: #f9fafb;
    border: 1px solid var(--sub-line);
    position: relative;
}

.archive-forum-item__poster img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Content Area */
.archive-forum-item__content {
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: space-between;
    gap: 48px;
    border-top: 3px solid var(--sub-red);
    padding-top: 48px;
    padding-bottom: 0;
}

.archive-forum-item__header-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* 연도(32px)와 완전히 같은 크기는 과했다. 이 세션에서 보조 텍스트에
   자주 쓴 20px(about 킥커와 같은 스케일)로 낮춘다. */
.archive-forum-item__year-label {
    font-size: 20px;
    font-weight: 700;
    color: var(--sub-gray, #4b5563);
    display: flex;
    align-items: center;
    gap: 10px;
    line-height: 32px;
}

.archive-forum-item__year {
    font-size: 32px;
    font-weight: 800;
    line-height: 32px;
    color: var(--sub-red);
    letter-spacing: -0.02em;
}

.archive-forum-item__title {
    font-size: clamp(28px, 2.8vw, 42px);
    font-weight: 800;
    line-height: 1.22;
    color: var(--sub-black);
    letter-spacing: -0.035em;
    margin: 0;
    word-break: keep-all;
    overflow-wrap: break-word;
    transition: color 0.25s ease;
}

/* Meta Information Area (Clean Left Accent Line) */
.archive-forum-item__meta {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.archive-forum-meta-row {
    display: flex;
    align-items: baseline;
    gap: 16px;
}

.archive-forum-meta-label {
    color: var(--sub-red);
    font-weight: 700;
    flex-shrink: 0;
    font-size: 20px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.archive-forum-meta-val {
    color: var(--sub-black);
    font-weight: 600;
    font-size: 18px;
    line-height: 1.5;
    word-break: keep-all;
}

/* =========================================================
    ACTION BUTTONS (BROCHURE, VIDEO, VIEW MORE, WEBSITE)
========================================================= */

.archive-forum-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    width: 100%;
    gap: 12px;
    margin-top: auto;
}

.page-archive-forum .archive-forum-actions .btn-archive-pill,
.archive-forum-actions .btn-archive-website {
    flex: 0 1 auto;
    width: fit-content;
    max-width: 100%;
    white-space: nowrap;
}

.page-archive-forum .archive-forum-section__more .btn-archive-pill,
.page-archive-forum .archive-forum-actions .btn-archive-pill {
    font-size: 16px;
    padding: 13px 28px;
    min-height: 48px;
}

.page-archive-forum .archive-forum-section__more .btn-archive-pill i,
.page-archive-forum .archive-forum-actions .btn-archive-pill i {
    font-size: 17px;
}

.btn-archive-website {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 24px;
    border: 1.5px solid var(--sub-red);
    color: var(--sub-red);
    background-color: transparent;
    font-size: 16px;
    font-weight: 800;
    letter-spacing: 0.05em;
    border-radius: 50px;
    text-decoration: none;
    text-transform: uppercase;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    min-height: 44px;
    width: fit-content;
}

.btn-archive-website:hover {
    background-color: var(--sub-red);
    border-color: var(--sub-red);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(244, 61, 48, 0.25);
}

.btn-archive-website i {
    font-size: 15px;
    flex-shrink: 0;
    transition: transform 0.25s ease;
}

.btn-archive-website:hover i {
    transform: translate(3px, -3px);
}

/* =========================================================
    RESPONSIVE RULES
========================================================= */

/* 태블릿 (~1320px) */
@media (max-width: 1320px) {
    .archive-forum-section {
        padding: 0 0 40px;
    }

    .archive-forum-list {
        gap: 50px;
    }

    .archive-forum-item__grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .archive-forum-item__poster {
        max-width: 440px;
        margin-inline: auto;
    }

    .archive-forum-item__content {
        gap: 28px;
        border-top: 0;
        padding-top: 20px;
        border-bottom: 3px solid var(--sub-red);
        padding-bottom: 52px;
    }

    .page-archive-forum .archive-forum-section__more .btn-archive-pill {
        font-size: 14px;
        padding: 11px 20px;
        min-height: 44px;
    }
}

/* 모바일 (~500px) */
@media (max-width: 500px) {
    .page-archive-forum .archive-forum-section__more {
        margin-bottom: 40px;
        justify-content: stretch;
    }

    .archive-forum-section__more .btn-archive-pill {
        width: 100%;
    }

    .archive-forum-list {
        gap: 50px;
    }

    .archive-forum-item__title {
        font-size: 26px;
    }

    .archive-forum-actions {
        width: 100%;
        justify-content: stretch;
    }

    .page-archive-forum .archive-forum-actions .btn-archive-pill,
    .archive-forum-actions .btn-archive-website {
        flex: 1 1 100%;
        width: 100%;
        white-space: nowrap;
        font-size: 16px;
        padding: 13px 28px;
        min-height: 48px;
    }

    .page-archive-forum .archive-forum-actions .btn-archive-pill i,
    .archive-forum-actions .btn-archive-website i {
        font-size: 17px;
    }

    .btn-archive-pill {
        width: 100%;
    }
}