/* ========================================
   制作実績 — チャンネル一覧・詳細
   ======================================== */

.portfolio-page {
    background: #000;
    min-height: 100vh;
}

.portfolio-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: calc(80px + 3rem) 1.5rem 4rem;
}

.portfolio-container--detail {
    padding-top: calc(80px + 2rem);
}

/* ── 一覧ページ ヘッダー ── */
.portfolio-header {
    text-align: center;
    margin-bottom: 3rem;
}

.portfolio-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    color: #fff;
    margin: 0 0 0.35rem;
    line-height: 1;
    letter-spacing: 0.02em;
}

.portfolio-subtitle {
    margin: 0;
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

/* ── チャンネル一覧グリッド ── */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 2.5rem 1.5rem;
}

.portfolio-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
    color: #fff;
    -webkit-tap-highlight-color: transparent;
}

.portfolio-card:hover,
.portfolio-card:focus-visible {
    color: #fff;
    text-decoration: none;
}

.portfolio-card-icon-wrap {
    display: block;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}

.portfolio-card:hover .portfolio-card-icon-wrap,
.portfolio-card:focus-visible .portfolio-card-icon-wrap {
    transform: translateY(-10px);
}

.portfolio-card-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #fff;
    display: block;
}

.portfolio-card-meta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.45rem;
    width: 100%;
}

.portfolio-card-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    text-align: center;
    line-height: 1.4;
    word-break: break-word;
}

.portfolio-card-badge,
.portfolio-client-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.22rem 0.55rem;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #000;
    background: #fff;
    border: 1px solid #fff;
    border-radius: 2px;
    line-height: 1.2;
    white-space: nowrap;
}

/* ── 詳細ページ：戻るリンク ── */
.portfolio-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-bottom: 2rem;
    color: #fff;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: opacity 0.2s ease;
}

.portfolio-back-link:hover,
.portfolio-back-link:focus-visible {
    color: #fff;
    text-decoration: none;
    opacity: 0.75;
}

/* ── 詳細ページ：チャンネルヘッダー ── */
.portfolio-client-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.portfolio-client-icon {
    flex-shrink: 0;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #fff;
}

.portfolio-client-info {
    min-width: 0;
}

.portfolio-client-name-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.65rem;
    margin-bottom: 0.25rem;
}

.portfolio-client-name {
    margin: 0;
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 900;
    color: #fff;
    line-height: 1.1;
}

.portfolio-client-label {
    margin: 0;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

/* ── セクション見出し ── */
.portfolio-section {
    margin-bottom: 3.5rem;
}

.portfolio-section:last-child {
    margin-bottom: 0;
}

.portfolio-section-title {
    margin: 0 0 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.06em;
}

/* ── ショート動画・横動画（16:9） ── */
.portfolio-shorts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.portfolio-short-card {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.portfolio-short-link {
    display: block;
    text-decoration: none;
    color: inherit;
    border-radius: 10px;
    outline: none;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.portfolio-short-link:hover,
.portfolio-short-link:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}

.portfolio-short-link:focus-visible {
    box-shadow: 0 0 0 2px #fff, 0 10px 28px rgba(0, 0, 0, 0.45);
}

.portfolio-short-frame {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #111;
    border-radius: 10px;
    overflow: hidden;
}

.portfolio-short-frame img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.35s ease;
}

.portfolio-short-link:hover .portfolio-short-frame img,
.portfolio-short-link:focus-visible .portfolio-short-frame img {
    transform: scale(1.03);
}

.portfolio-short-title {
    margin: 0;
    padding: 0 0.15rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.5;
    text-align: center;
    word-break: break-word;
}

/* ── サムネイル（16:9） ── */
.portfolio-thumbnails-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.portfolio-thumb-card {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.portfolio-thumb-link {
    display: block;
    text-decoration: none;
    color: inherit;
    border-radius: 8px;
    outline: none;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.portfolio-thumb-link:hover,
.portfolio-thumb-link:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}

.portfolio-thumb-link:focus-visible {
    box-shadow: 0 0 0 2px #fff, 0 10px 28px rgba(0, 0, 0, 0.45);
}

.portfolio-thumb-frame {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #111;
    border-radius: 8px;
    overflow: hidden;
}

.portfolio-thumb-frame img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.35s ease;
}

.portfolio-thumb-link:hover .portfolio-thumb-frame img,
.portfolio-thumb-link:focus-visible .portfolio-thumb-frame img {
    transform: scale(1.03);
}

.portfolio-thumb-title {
    margin: 0;
    font-size: 0.82rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.75);
    text-align: center;
    line-height: 1.45;
    word-break: break-word;
}

/* ── 404 ── */
.portfolio-not-found {
    text-align: center;
    padding: 3rem 0;
    color: rgba(255, 255, 255, 0.6);
}

.portfolio-not-found .portfolio-back-link {
    margin-top: 1.5rem;
    margin-bottom: 0;
}

/* ── レスポンシブ：一覧 ── */
@media (max-width: 1100px) {
    .portfolio-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 860px) {
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem 1.25rem;
    }
}

@media (max-width: 640px) {
    .portfolio-container {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }

    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.75rem 1rem;
    }

    .portfolio-card-icon {
        width: 88px;
        height: 88px;
    }

    .portfolio-shorts-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }

    .portfolio-thumbnails-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 420px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .portfolio-card-icon {
        width: 80px;
        height: 80px;
    }

    .portfolio-shorts-grid {
        grid-template-columns: 1fr;
    }
}

/* ── レスポンシブ：詳細 ── */
@media (max-width: 768px) {
    .portfolio-client-icon {
        width: 60px;
        height: 60px;
    }

    .portfolio-shorts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .portfolio-thumbnails-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 520px) {
    .portfolio-shorts-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: none;
    }
}