/* リセット & 基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #000;
    --secondary-color: #fff;
    --accent-color: #333;
    --text-color: #222;
    --bg-color: #fafafa;
    /* Palette tokens for unified colors */
    --brand-teal: #02ADBC;
    --brand-blue: #1BACF7;
    --brand-deep-blue: #248BFB;
    --brand-red-1: #D32F2F; /* YouTube gradient start */
    --brand-red-2: #B71C1C; /* YouTube gradient end */
    --accent-orange: #FF8A00;
    --card-overlay: rgba(255,255,255,0.04);
    --muted-text: #c5ceda;
    /* Year pill tokens - unified */
    --pill-year-bg: #f5f5f5;
    --pill-year-color: #0f172a;
    --pill-year-border: #e6e6e6;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

/* ヘッダー & ナビゲーション */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.25rem; /* 隙間を狭く */
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.4px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.logo-handle {
    font-size: 0.75rem;
    font-weight: 400;
    color: rgba(0, 0, 0, 0.5);
    letter-spacing: 0.05em;
    align-self: center; /* テキストをベースラインではなく中央寄せにして縦のズレを減らす */
    margin-bottom: 0; /* 小さな余白を削除 */
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

/* ヒーローセクション */
#hero {
    width: 100%;
    aspect-ratio: 2.414 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
    /* Background fallback (image element placed in markup for reliable stacking) */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: #000; /* fallback */
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
    z-index: 0; /* keep pseudo overlay behind the hero image */
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 3;
    display: none; /* Hide hero content as requested */
}

/* Hero image wrapper (picture) above the pseudo overlay but behind content */
.hero-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    z-index: 2;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-title-wrapper {
    font-weight: 700;
    letter-spacing: -2px;
    margin-bottom: 0;
    color: #fff;
    display: flex;
    align-items: baseline;
    gap: 1rem;
}

.hero-handle {
    font-size: 1.5rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 0.05em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    opacity: 1 !important;
    margin-bottom: 3rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 3rem;
    background: transparent;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    letter-spacing: 1px;
    transition: var(--transition);
    border: 2px solid #fff;
    margin-top: 3rem;
}

.cta-button:hover {
    background: #fff;
    color: #000;
}

/* コンテナ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 3rem;
}

/* セクション共通 */
section {
    padding: 6rem 0;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 4rem;
    letter-spacing: -1px;
    text-align: center;
}

/* アバウトセクション */
#about {
    background: var(--secondary-color);
}

.about-content {
    max-width: 800px;
    margin: 0 auto 4rem;
    text-align: center;
}

.about-content p {
    font-size: 1.5rem;
    line-height: 2;
    margin-bottom: 1rem;
    color: #555;
}

/* About: 自己紹介動画のレスポンシブコンテナ */
.about-video {
    max-width: 900px;
    margin: 1.5rem auto 2.5rem;
    position: relative;
    width: 100%;
}

/* 初期状態は非表示にしておき、再生に成功したら JS で表示する
   （再生できないブラウザで黒い領域が表示されるのを防ぐ） */
.about-video {
    display: none;
    overflow: hidden; /* 動画の外側領域をクリッピングする */
    border-radius: 18px; /* 角丸を少し大きくする */
}

.about-video .about-intro-video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 18px;
    object-fit: cover;
    background: #000;
}

/* 動画をクリック可能に見せる（再生/一時停止トグル） */
/* クリック時の挙動は JS で扱うが、カーソルは変更しない */

/* 上下左右1pxずつトリミングして表示する（コンテナは overflow:hidden） */
.about-video .about-intro-video {
    position: relative;
    left: -2px;
    top: -2px;
    width: calc(100% + 4px);
    height: auto;
}

/* 自動再生がブロックされたときに表示する大きな再生ボタンオーバーレイ */
.about-video .play-overlay {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 5;
    background: rgba(0,0,0,0.6);
    color: #fff;
    border: none;
    width: 76px;
    height: 76px;
    border-radius: 50%;
    font-size: 2rem;
    display: none; /* 再生に成功したら非表示 */
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 8px 30px rgba(0,0,0,0.45);
}

.about-video .about-video-fallback {
    margin-top: 0.75rem;
    text-align: center;
    font-size: 0.95rem;
    color: #666;
}

/* モバイル向け: ボタンを少し小さく */
@media (max-width: 480px) {
    .about-video .play-overlay {
        width: 60px;
        height: 60px;
        font-size: 1.4rem;
    }
}

.skills {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.skill-item {
    text-align: center;
    padding: 2rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.skill-item:hover {
    opacity: 0.8;
}

.skill-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    letter-spacing: 1px;
}

.skill-item p {
    color: #666;
    font-size: 0.95rem;
}

/* 作品セクション */
#works {
    background: radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.08), transparent 40%),
                radial-gradient(circle at 90% 10%, rgba(255, 255, 255, 0.06), transparent 40%),
                linear-gradient(180deg, #0d1117 0%, #0b0e12 60%, #0f141c 100%);
    color: #e7ecf2;
}

#works .section-title {
    color: #f5f7fb;
    margin-bottom: 1rem;
}

#works .section-header {
    text-align: center;
}

#works .section-subtitle {
    color: #c4c9d4;
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.75rem;
}



.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.8rem;
}

.project-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    display: flex;
    flex-direction: column;
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(255, 255, 255, 0.08), transparent 40%);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 28px 70px rgba(0, 0, 0, 0.6);
    border-color: rgba(255, 255, 255, 0.12);
}

.project-card:hover::before {
    opacity: 1;
}

.project-thumb {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.08), transparent 55%),
                #0b0e12;
}

.project-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease, filter 0.5s ease;
    filter: saturate(1.05);
}

.project-card:hover .project-thumb img {
    transform: scale(1.05);
    filter: saturate(1.1);
}







.project-body {
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    position: relative;
    z-index: 1;
}



.project-card h3 {
    font-size: 1.35rem;
    letter-spacing: 0.5px;
}

.project-card h3 a {
    color: #f5f7fb;
    text-decoration: none;
    transition: opacity 0.25s ease;
}

.project-card h3 a:hover {
    opacity: 0.8;
}

.project-desc {
    color: #c5ceda;
    line-height: 1.7;
    font-size: 0.98rem;
}

.project-links {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
    margin-top: 0.25rem;
}

.link-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.85rem;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.2s ease, opacity 0.2s ease, box-shadow 0.2s ease;
    color: #0d1117;
    background: var(--badge-bg, #f5f7fb);
}

.link-badge:hover {
    transform: translateY(-2px);
    opacity: 0.92;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.12);
}

.link-badge.proto {
    background: var(--brand-teal);
    color: #f7fafa;
}

.link-badge.hackster {
    background: var(--brand-blue);
    color: #f7fbff;
}

.link-badge.award {
    /* Yellow -> Orange gradient for award badges (stronger, high-contrast) */
    background: linear-gradient(135deg, #FFED66 0%, #FFB84D 50%, #FF8A00 100%);
    color: #1a1a10;
    box-shadow: inset 0 -2px 0 rgba(0,0,0,0.06), 0 10px 24px rgba(255,138,0,0.14);
}
    /* Award badge: yellow->orange gradient and layout */
    .link-badge.award {
         background: linear-gradient(135deg, #FFED66 0%, #FFB84D 50%, #FF8A00 100%);
         color: #1a1a10;
         /* 左にトロフィー、右にタイトル/メタの縦組み
            --- 他のバッジとは別行にしたいので幅を占めるブロック表示にする */
         display: flex;
         width: 100%;
         box-sizing: border-box;
         flex-direction: row;
         align-items: center;
         gap: 0.6rem;
         padding: 0.36rem 0.6rem;
         margin-top: 0.32rem;
         /* Narrower outer shadow using orange tones */
         box-shadow: inset 0 -2px 0 rgba(0,0,0,0.08), 0 12px 30px rgba(255,138,0,0.18);
     }

    /* Trophy (left) styling */
    .link-badge.award .trophy {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 1.4em;
        height: 1.4em;
        font-size: 1.05em;
        line-height: 1;
    }

    /* Right column: title above, meta below */
    .link-badge.award .award-body {
        display: inline-flex;
        flex-direction: column;
        align-items: flex-start;
    }

    .link-badge.award .award-title {
        display: block;
        font-size: 0.95rem;
        line-height: 1.1;
    }

    /* YouTube badge: shape matches other .link-badge (like ProtoPedia) */
    .link-badge.youtube {
            /* Use brand red tokens for consistent red */
            background: linear-gradient(180deg, var(--brand-red-1) 0%, var(--brand-red-2) 100%);
            color: #fff;
            padding: 0.4rem 0.85rem;
            border-radius: 10px;
            font-size: 0.85rem;
            font-weight: 700;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }
    .link-badge.youtube:hover {
        transform: translateY(-2px);
        opacity: 0.88;
        box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    }

    /* Smaller secondary line inside award badges */
    .link-badge.award .award-meta {
        display: block;
        font-size: 0.78rem;
        line-height: 1.2;
        margin-top: 0.08rem;
        opacity: 0.95;
    }

/* Trophy のみを対象に四方方向の濃いテキストシャドウを適用（続く文字列には影を付けない） */
.link-badge.award .trophy {
    display: inline-block;
    /* 強めの放射状シャドウ（四方向に見えるように0 0 blur を使う） */
    text-shadow:
    0 0 1px rgba(0,0,0,0.35),
    0.4px 0.4px 2px rgba(0,0,0,0.25),
    -0.4px -0.4px 2px rgba(0,0,0,0.25),
    0.4px -0.4px 2px rgba(0,0,0,0.25),
    -0.4px 0.4px 2px rgba(0,0,0,0.25);
}

.link-badge.thingiverse {
    background: var(--brand-deep-blue);
    color: #f7fbff;
}

/* 活動履歴セクション */
#awards {
    background: radial-gradient(circle at 20% 20%, rgba(0, 0, 0, 0.06), transparent 40%),
                radial-gradient(circle at 80% 0%, rgba(0, 0, 0, 0.08), transparent 45%),
                #f5f5f5;
    position: relative;
}

#awards::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.05), transparent 35%, rgba(0, 0, 0, 0.05));
    pointer-events: none;
}

#awards .container {
    position: relative;
    z-index: 1;
}

/* Scoped 活動履歴 styles to ensure they apply */
#awards .section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 3rem;
}

#awards .section-title {
    margin-bottom: 1rem;
}

#awards .section-subtitle {
    color: #666;
    font-size: 1rem;
    line-height: 1.8;
}

#awards .timeline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

#awards .timeline-card {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 18px;
    padding: 1.5rem;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.04);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    position: relative;
    overflow: hidden;
}

#awards .timeline-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.04), transparent 60%);
    opacity: 0;
    transition: opacity 0.25s ease;
}

#awards .timeline-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.12);
}

#awards .timeline-card:hover::after {
    opacity: 1;
}

#awards .timeline-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    letter-spacing: 0.3px;
    position: relative;
    z-index: 1;
}

#awards .timeline-card h3 a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

#awards .timeline-card h3 a:hover {
    opacity: 0.75;
}

#awards .timeline-card p {
    color: #555;
    font-size: 0.95rem;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* 活動履歴の accent カード内で、連続する段落の間に余白を入れる
   （例: 'うれしい！' の上の隙間を確保） */
#awards .timeline-card.accent p + p {
    margin-top: 0.75rem;
}

#awards .timeline-meta {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.75rem;
    position: relative;
    z-index: 1;
}

#awards .pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.4px;
    background: rgba(0, 0, 0, 0.06);
    color: #222;
}

#awards .pill-year {
    background: var(--pill-year-bg);
    color: var(--pill-year-color);
    border: 1px solid var(--pill-year-border);
    border-radius: 6px;
    padding: 0.32rem 0.72rem;
}

#awards .pill-type {
    background: var(--brand-teal); /* ティール系 */
    color: #ffffff; /* 白文字 */
    border: none;
}

/* Date pill for events */
#awards .pill-date {
    display: inline-flex;
    align-items: center;
    padding: 0.28rem 0.65rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    background: rgba(0,0,0,0.04);
    color: #0f172a;
    margin-left: 0.5rem;
}

/* Plain date text rendered under badges/headings to avoid layout shifts */
#awards .event-date {
    display: block;
    margin: 0.18rem 0 0.32rem 0; /* tighter top/bottom spacing */
    font-size: 0.95rem;
    color: var(--muted-text);
    font-weight: 600;
}

/* Upcoming pill + highlight for soon-to-be events */
#awards .pill-upcoming {
    background: linear-gradient(180deg,#FF8A00 0%, #FF6F00 100%);
    color: #fff;
}

#awards .timeline-card.upcoming {
    /* Match regular timeline-card background for visual consistency */
    background: rgba(255, 255, 255, 0.9);
    /* Use a thicker orange border as the primary accent */
    border: 3px solid var(--accent-orange);
    /* Keep the same subtle shadow as other timeline cards */
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.04);
    position: relative;
    /* Reset padding to match other cards (no reserved left gutter) */
    padding-left: 1.5rem;
    border-radius: 18px;
}

#awards .timeline-card.accent {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(34, 34, 34, 0.9));
    color: #f7f7f7;
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.22);
}

/* Swap: for award cards, make the year pill use the muted/accent background
   and make the type (Award) pill use the yellow year color so they are visually swapped */
/* For award (accent) cards, keep the year pill visually consistent
   with events: white background, black text and border */
/* Accent cards (awards) should use the same year pill styling as events */
#awards .timeline-card.accent .pill-year {
    background: var(--pill-year-bg);
    color: var(--pill-year-color);
    border: 1px solid var(--pill-year-border);
    border-radius: 6px;
    padding: 0.32rem 0.72rem;
}

#awards .timeline-card.accent .pill-type {
    background: #f4d03f;
    color: #1f2937;
    border-color: rgba(0, 0, 0, 0.06);
}

#awards .timeline-card.accent p {
    color: #e5e7eb;
}

/* コンタクトセクション */
#contact {
    background: var(--primary-color);
    color: var(--secondary-color);
}

#contact .section-title {
    color: var(--secondary-color);
}

#contact .section-title {
    margin-bottom: 1rem;
}

/* Contact 内のサブタイトルを白にする（活動履歴と同じ構造に合わせる） */
#contact .section-subtitle {
    color: var(--secondary-color);
    margin-bottom: 1.75rem;
}

/* Contact のヘッダーを中央揃えにして副題をセンタリング */
#contact .section-header {
    text-align: center;
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.social-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    align-items: center;
}

.contact-note {
    color: var(--secondary-color);
    font-size: 1rem;
    margin-top: 1rem;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--secondary-color);
    color: var(--primary-color);
    transition: var(--transition);
    text-decoration: none;
}

.social-icon:hover {
    transform: translateY(-5px);
    opacity: 0.8;
}

.social-icon svg {
    width: 24px;
    height: 24px;
}

/* ブランド別 白抜きスタイル */
.social-icon.hackster {
    background: #1BACF7; /* Hackster blue */
    color: #fff;
}

.social-icon.protopedia {
    background: #02ADBC; /* ProtoPedia color */
    color: #fff;
}

.social-icon.thingiverse {
    background: #248BFB; /* Thingiverse blue */
    color: #fff;
}

/* 追加ブランドカラー */
.social-icon.x {
    background: #fff; /* 白背景 */
    color: #000; /* アイコンは黒 */
}

.social-icon.x svg {
    fill: #000;
}

.social-icon.github {
    background: #24292e; /* GitHub */
    color: #fff;
}

.social-icon.youtube {
    /* Use brand red for social icon */
    background: var(--brand-red-1);
    color: #fff;
}

/* フッター */
footer {
    background: var(--primary-color);
    color: var(--secondary-color);
    text-align: center;
    padding: 2rem;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* アニメーション */

/* レスポンシブ */
@media (max-width: 768px) {
    /* Make the hero feel bigger on mobile */
    #hero {
        aspect-ratio: 1 / 1;
        min-height: 70vh;
        background-color: #000;
    }

    .hero-image img {
        transform: scale(0.98);
    }

    /* Add subtle top/bottom black bars so the hero feels taller on mobile */
    #hero::after {
        content: '';
        position: absolute;
        inset: 0;
        pointer-events: none;
        background:
            linear-gradient(180deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.65) 10%, transparent 22%),
            linear-gradient(0deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.65) 10%, transparent 22%);
        z-index: 3;
    }

    nav {
        padding: 1rem 1.5rem;
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .container {
        padding: 0 1.5rem;
    }

    section {
        padding: 5rem 0;
    }

    .works-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .skills {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-links {
        flex-direction: column;
        gap: 1rem;
    }
}

/* Image preview overlay */
#image-preview-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 2000;
}

#image-preview-overlay img {
    /* 画面ギリギリまで表示する */
    max-width: 100vw;
    max-height: 100vh;
    width: auto;
    height: auto;
    box-sizing: border-box;
    padding: 0; /* 余白をなくす */
    border-radius: 0; /* 角丸を外す */
    transform: translateX(-100vw) scale(0.95);
    opacity: 1 !important;
}

/* アニメーション: 左から入って一瞬止まって右に出る */
@keyframes slideInPauseOut {
    0% { transform: translateX(-100vw) scale(0.95); }
    15% { transform: translateX(0) scale(1); }
    65% { transform: translateX(0) scale(1); }
    93% { transform: translateX(0) scale(1); }
    100% { transform: translateX(100vw) scale(0.95); }
}

/* 再生中のクラスを付与するとアニメーションする */
#image-preview-overlay.playing img {
    animation: slideInPauseOut 1.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    pointer-events: auto;
}

/* クリックでキャンセルできるようにオーバーレイ自体は透過黒を表示 */
#image-preview-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.55);
    opacity: 0;
    transition: opacity 0.12s ease;
    pointer-events: none;
}

#image-preview-overlay.playing::before {
    opacity: 1;
    pointer-events: auto;
}