@charset "UTF-8";

/* --- 全体の基本設定 --- */
:root {
    --bg-color: #ffffff;
    --bg-sub: #f8f9fa;
    --text-main: #333333;
    --text-sub: #777777;
    --accent-blue: #0088ff;
    --header-height: 70px;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height); 
}

body.is-loading { overflow: hidden; }

body {
    margin: 0; padding: 0;
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', sans-serif;
    color: var(--text-main); line-height: 1.6;
    background-color: transparent; 
}

a { text-decoration: none; color: inherit; }
.container { max-width: 1000px; margin: 0 auto; padding: 0 20px; }

/* =========================================
   奥のレイヤー：流体インクマーブル（強力ブラー）
========================================= */
#bg-ink {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -10; background-color: #f0f2f5; 
    overflow: hidden; filter: blur(70px); 
    transform: translate3d(0, 0, 0); pointer-events: none;
}
.ink-blob { position: absolute; border-radius: 50%; mix-blend-mode: multiply; opacity: 0.8; will-change: transform; }
.ink-1 { width: 60vw; height: 60vw; background-color: #c9d6e8; top: -10vh; left: -10vw; animation: move1 18s infinite alternate ease-in-out; }
.ink-2 { width: 70vw; height: 70vw; background-color: #dbe4f0; bottom: -20vh; right: -10vw; animation: move2 22s infinite alternate ease-in-out; }
.ink-3 { width: 50vw; height: 50vw; background-color: #b5c7dd; top: 40vh; left: 30vw; animation: move3 25s infinite alternate-reverse ease-in-out; }
.ink-4 { width: 80vw; height: 80vw; background-color: #e2e8f0; top: 10vh; right: 20vw; animation: move4 20s infinite alternate ease-in-out; }

@keyframes move1 { 0% { transform: translate(0, 0) scale(1); } 100% { transform: translate(30vw, 20vh) scale(1.3); } }
@keyframes move2 { 0% { transform: translate(0, 0) scale(1.2); } 100% { transform: translate(-40vw, -20vh) scale(0.8); } }
@keyframes move3 { 0% { transform: translate(0, 0) scale(0.8); } 100% { transform: translate(-30vw, -30vh) scale(1.4); } }
@keyframes move4 { 0% { transform: translate(0, 0) scale(1); } 100% { transform: translate(20vw, 40vh) scale(1.1); } }

/* =========================================
   手前のレイヤー：アウトラインマーブル（線のみ）
========================================= */
#bg-outline {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -9; overflow: hidden; pointer-events: none;
}
.outline-blob {
    position: absolute; border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%; 
    background-color: transparent; border: 2px solid rgba(110, 150, 220, 0.8); will-change: transform;
}
.outline-1 { width: 100vmax; height: 100vmax; top: -20vh; left: -10vw; animation: flow1 35s infinite linear; }
.outline-2 { width: 120vmax; height: 120vmax; bottom: -30vh; right: -20vw; animation: flow2 40s infinite linear reverse; }
.outline-3 { width: 90vmax; height: 90vmax; top: 20vh; left: 30vw; animation: flow3 30s infinite linear; }

@keyframes flow1 { 0% { transform: rotate(0deg) translate(0, 0) scale(1); } 33% { transform: rotate(120deg) translate(5vw, 5vh) scale(1.05); } 66% { transform: rotate(240deg) translate(-5vw, 10vh) scale(0.95); } 100% { transform: rotate(360deg) translate(0, 0) scale(1); } }
@keyframes flow2 { 0% { transform: rotate(0deg) translate(0, 0) scale(1); } 33% { transform: rotate(120deg) translate(-10vw, -5vh) scale(1.05); } 66% { transform: rotate(240deg) translate(5vw, -10vh) scale(0.95); } 100% { transform: rotate(360deg) translate(0, 0) scale(1); } }
@keyframes flow3 { 0% { transform: rotate(0deg) translate(0, 0) scale(1); } 33% { transform: rotate(120deg) translate(10vw, -10vh) scale(0.95); } 66% { transform: rotate(240deg) translate(-10vw, 5vh) scale(1.05); } 100% { transform: rotate(360deg) translate(0, 0) scale(1); } }

/* =========================================
   ローディング画面 (極・流体インク版)
========================================= */
#loader {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: #000; z-index: 9999;
    display: flex; justify-content: center; align-items: center; transition: opacity 1.5s ease;
}
#loader.hidden { opacity: 0; pointer-events: none; }
#loader-ripples { position: absolute; top: 0; left: 0; width: 100%; height: 100%; overflow: hidden; z-index: 1; }

.ink-layer {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    filter: url(#goo); mix-blend-mode: screen; 
    transform: scale(0) rotate(0deg); opacity: 0; will-change: transform, opacity;
}

.ink-blue { transform-origin: 50% 50%; }
.ink-purple { transform-origin: 75% 75%; }
.ink-cyan { transform-origin: 25% 25%; }
.ink-white { transform-origin: 50% 50%; mix-blend-mode: normal; }

.bg-blue { background-color: rgba(0, 136, 255, 0.95); }
.bg-purple { background-color: rgba(140, 0, 255, 0.95); }
.bg-cyan { background-color: rgba(0, 255, 200, 0.95); }
.bg-white { background-color: #ffffff; }

.main-drop, .sub-drop { position: absolute; border-radius: 50%; }

/* ① 真ん中に落ちる青 */
.ink-blue .main-drop { width: 40vmax; height: 40vmax; top: 50%; left: 50%; margin: -20vmax; }
.ink-blue .d1 { width: 30vmax; height: 30vmax; top: 50%; left: 50%; margin: -15vmax; transform-origin: 15vmax 10vmax; animation: wobble 3s infinite linear; }
.ink-blue .d2 { width: 25vmax; height: 25vmax; top: 50%; left: 50%; margin: -12.5vmax; transform-origin: -15vmax -20vmax; animation: wobble 4s infinite linear reverse; }
.ink-blue .d3 { width: 35vmax; height: 35vmax; top: 50%; left: 50%; margin: -17.5vmax; transform-origin: 20vmax -10vmax; animation: wobble 3.5s infinite linear; }

/* ② 右下から広がる紫 */
.ink-purple .main-drop { width: 45vmax; height: 45vmax; top: 75%; left: 75%; margin: -22.5vmax; }
.ink-purple .d1 { width: 35vmax; height: 35vmax; top: 75%; left: 75%; margin: -17.5vmax; transform-origin: -20vmax 15vmax; animation: wobble 3.8s infinite linear; }
.ink-purple .d2 { width: 30vmax; height: 30vmax; top: 75%; left: 75%; margin: -15vmax; transform-origin: 15vmax -15vmax; animation: wobble 4.2s infinite linear reverse; }

/* ③ 左上から広がる水色 */
.ink-cyan .main-drop { width: 40vmax; height: 40vmax; top: 25%; left: 25%; margin: -20vmax; }
.ink-cyan .d1 { width: 35vmax; height: 35vmax; top: 25%; left: 25%; margin: -17.5vmax; transform-origin: 18vmax 18vmax; animation: wobble 3.5s infinite linear reverse; }
.ink-cyan .d2 { width: 25vmax; height: 25vmax; top: 25%; left: 25%; margin: -12.5vmax; transform-origin: -18vmax 15vmax; animation: wobble 4.5s infinite linear; }

/* ④ 最後にすべてを白くする */
.ink-white .main-drop { width: 100vmax; height: 100vmax; top: 50%; left: 50%; margin: -50vmax; }

@keyframes wobble { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

.ripple.active { animation: spreadInk 6s cubic-bezier(0.25, 0.1, 0.25, 1) forwards; }
.ink-blue.active { animation-delay: 0s; }
.ink-purple.active { animation-delay: 0.8s; } 
.ink-cyan.active { animation-delay: 1.6s; }   
.ink-white.active { animation: fillWhite 2.5s cubic-bezier(0.4, 0, 0.2, 1) forwards; animation-delay: 4.5s; }

@keyframes spreadInk {
    0% { transform: scale(0) rotate(0deg); opacity: 0; }
    5% { opacity: 0.95; }
    40% { transform: scale(0.7) rotate(30deg); opacity: 0.95; }
    100% { transform: scale(3.5) rotate(180deg); opacity: 1; }
}
@keyframes fillWhite {
    0% { transform: scale(0); opacity: 0; }
    40% { opacity: 1; }
    100% { transform: scale(2.5); opacity: 1; }
}

/* 中央テキスト演出 */
#loader-text-wrapper {
    position: relative; z-index: 3; display: flex; flex-direction: column; align-items: center;
    cursor: pointer; user-select: none; transition: opacity 2s ease, transform 0.5s ease, filter 2s ease;
}
#loader-text-wrapper:hover { transform: scale(1.05); }
#loader-text-wrapper.fade-out { opacity: 0; transform: scale(0.8) translateY(-20px); filter: blur(15px); }

#loader-text { color: #fff; font-size: 2.5rem; font-weight: 300; letter-spacing: 0.2em; animation: textPulse 3s infinite alternate ease-in-out; }
#loader-subtext { color: rgba(255, 255, 255, 0.8); font-size: 0.8rem; letter-spacing: 0.3em; font-weight: bold; margin-top: 15px; animation: textPulse 3s infinite alternate ease-in-out 0.5s; }

@keyframes textPulse {
    0% { opacity: 0.6; text-shadow: 0 0 10px rgba(255, 255, 255, 0.2); }
    100% { opacity: 1; text-shadow: 0 0 25px rgba(255, 255, 255, 0.8), 0 0 40px rgba(0, 136, 255, 0.6); }
}

/* --- ヘッダー --- */
.site-header {
    position: fixed; top: 0; left: 0; width: 100%; height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.85); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); z-index: 1000; 
    display: flex; align-items: center;
}

.header-inner { 
    width: 100%; max-width: 1000px; margin: 0 auto; padding: 0 20px; 
    display: flex; justify-content: space-between; 
    
    /* ▼▼ 修正箇所：center（中央合わせ）から baseline（文字の下端合わせ）に変更 ▼▼ */
    align-items: baseline; 
    transform: translateY(2px); /* 下合わせにしたことで少し浮いて見える場合の微調整 */
}

.header-logo { 
    font-size: 1.5rem; font-weight: bold; color: var(--accent-blue); letter-spacing: 0.1em; 
    line-height: 1;
}

/* ▼▼▼ これを追加 ▼▼▼ */
.header-logo .sigma {
    display: inline-block;
    /* 「∑」だけを強制的に少し下にズラして「a」の底辺と揃える */
    transform: translateY(3px); 
}

.header-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 30px; }
.header-nav a { font-size: 0.95rem; font-weight: bold; color: var(--text-sub); transition: color 0.3s ease; }
.header-nav a:hover { color: var(--accent-blue); }
.back-link { font-weight: bold; color: var(--accent-blue); display: flex; align-items: center; gap: 5px; }
.back-link:hover { text-decoration: underline; }

/* --- トップページ：ヒーローセクション --- */
.hero { margin-top: var(--header-height); position: relative; width: 100%; aspect-ratio: 21 / 9; background-color: #000; overflow: hidden; }
.slideshow-container { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.slide-video { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 2s ease-in-out; }
.slide-video.active { opacity: 1; }
body.is-loading .slide-video { opacity: 0 !important; }
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.2); z-index: 1; transition: background-color 2s ease; }
body.is-loading .hero-overlay { background: rgba(255, 255, 255, 1); }
.hero-content { position: absolute; bottom: 0; left: 0; z-index: 2; padding-left: 10%; width: 100%; box-sizing: border-box; }
.main-title {
    font-size: 16rem; font-weight: bold; margin: 0; letter-spacing: 0.1em; color: transparent;
    -webkit-text-stroke: 3px #ffffff; text-shadow: 0 0 30px rgba(255, 255, 255, 0.5);
    line-height: 0.8; transform: translateY(45%); transition: transform 2.5s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 2s ease;
}
body.is-loading .main-title { transform: translateY(100%); opacity: 0; }

/* --- コンセプトバー（グラスモーフィズム） --- */
.concept-bar {
    padding: 60px 20px; text-align: center; background: rgba(255, 255, 255, 0.5); backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px); border-top: 1px solid rgba(255, 255, 255, 0.5); border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}
.concept-text { font-size: 2.2rem; font-weight: 300; color: var(--text-main); letter-spacing: 0.4em; margin: 0; text-shadow: 0 0 10px rgba(255,255,255,0.8); }

/* --- セクション共通 --- */
.section { padding: 80px 0 120px; }
.section-title { font-size: 2rem; text-align: center; margin-bottom: 60px; position: relative; text-shadow: 0 0 15px rgba(255, 255, 255, 0.9), 0 0 30px rgba(255, 255, 255, 0.9); }
.section-title::after { content: ''; display: block; width: 40px; height: 2px; background-color: var(--accent-blue); margin: 20px auto 0; box-shadow: 0 0 10px rgba(255,255,255,0.5); }

/* --- プロフィール --- */
.about-wrapper { display: flex; gap: 50px; align-items: flex-start; margin-bottom: 60px; }
.about-image { flex: 1; max-width: 400px; background-color: transparent; border-radius: 8px; overflow: hidden; text-align: center; }
.about-image img { width: 100%; height: auto; display: block; }
.about-content, .profile-details {
    flex: 2; padding: 40px; border-radius: 12px; background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.5); box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
}
.about-name { font-size: 1.8rem; font-weight: bold; margin-top: 0; margin-bottom: 20px; }
.about-text { margin-bottom: 40px; color: var(--text-main); font-size: 1.05rem; }
.about-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.about-gallery-item { aspect-ratio: 1 / 1; border-radius: 4px; overflow: hidden; }
.about-gallery-item img { width: 100%; height: 100%; object-fit: cover; }

.detail-title { font-size: 1.4rem; font-weight: bold; color: var(--text-main); border-bottom: 2px solid rgba(0, 0, 0, 0.1); padding-bottom: 10px; margin-top: 0; margin-bottom: 30px; }
.detail-title.history { margin-top: 50px; }
.profile-book { display: grid; grid-template-columns: max-content 1fr; gap: 15px 30px; background-color: rgba(255, 255, 255, 0.6); padding: 30px; border-radius: 8px; margin: 0; box-shadow: 0 4px 15px rgba(0,0,0,0.03); }
.profile-book dt { font-weight: bold; color: var(--accent-blue); text-align: right; border-right: 2px solid rgba(0,0,0,0.1); padding-right: 15px; }
.profile-book dd { margin: 0; color: var(--text-main); line-height: 1.6; }
.history-list { list-style: none; padding: 0; margin: 0; }
.history-item { display: flex; margin-bottom: 20px; align-items: baseline; }
.history-date { font-weight: bold; color: var(--accent-blue); width: 120px; flex-shrink: 0; }
.history-event { color: var(--text-main); line-height: 1.6; }

/* --- ワークス --- */
#works { background-color: transparent; }
.works-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 40px; }
.work-card {
    background: rgba(255, 255, 255, 0.75); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.6); border-radius: 8px; overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05); transition: transform 0.3s ease, box-shadow 0.3s ease; display: block;
}
.work-card:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0, 136, 255, 0.15); }
.work-thumb { width: 100%; aspect-ratio: 16 / 9; background-color: #eee; overflow: hidden; }
.work-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.work-card:hover .work-thumb img { transform: scale(1.05); }
.work-info { padding: 25px 20px; }
.work-title { font-size: 1.1rem; font-weight: bold; margin: 0 0 10px 0; color: var(--text-main); }
.work-date { font-size: 0.85rem; color: var(--accent-blue); }
.work-desc { font-size: 0.9rem; color: var(--text-sub); margin-top: 10px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* --- コンタクト＆フッター --- */
.contact-links { display: flex; justify-content: center; gap: 30px; }
.contact-btn {
    display: flex; align-items: center; gap: 10px; padding: 15px 40px; border-radius: 30px;
    background-color: rgba(255, 255, 255, 0.8); backdrop-filter: blur(5px);
    border: 2px solid var(--accent-blue); color: var(--accent-blue); font-weight: bold; transition: all 0.3s ease;
}
.contact-btn svg { width: 24px; height: 24px; fill: currentColor; }
.contact-btn:hover { background-color: var(--accent-blue); color: #fff; }
footer { text-align: center; padding: 40px; font-size: 0.9rem; color: var(--text-sub); border-top: 1px solid rgba(0,0,0,0.1); }

/* --- 詳細ページ専用 (Works Detail) --- */
.detail-container { max-width: 800px; margin: 0 auto; padding: 40px 20px 100px; position: relative; z-index: 10; padding-top: calc(var(--header-height) + 40px); }
.detail-hero { width: 100%; aspect-ratio: 16 / 9; border-radius: 12px; overflow: hidden; margin-bottom: 40px; background-color: var(--bg-sub); box-shadow: 0 10px 30px rgba(0,0,0,0.05); }
.detail-hero img { width: 100%; height: 100%; object-fit: cover; }
.detail-header { margin-bottom: 40px; border-bottom: 1px solid rgba(0,0,0,0.1); padding-bottom: 20px; }
.detail-title { font-size: 2.5rem; font-weight: bold; margin: 0 0 10px 0; color: var(--text-main); }
.detail-meta { display: flex; gap: 20px; color: var(--text-sub); font-size: 0.95rem; }
.detail-role { color: var(--accent-blue); font-weight: bold; }
.detail-content { font-size: 1.05rem; margin-bottom: 50px; background: rgba(255, 255, 255, 0.75); padding: 30px; border-radius: 12px; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid rgba(255, 255, 255, 0.5); }
.detail-content h4 { font-size: 1.3rem; margin-top: 40px; border-left: 4px solid var(--accent-blue); padding-left: 10px; }
.detail-content p:first-child { margin-top: 0; }
.external-links { display: flex; gap: 15px; margin-bottom: 60px; flex-wrap: wrap; }
.ext-btn { padding: 12px 25px; border-radius: 6px; font-weight: bold; transition: all 0.3s ease; background-color: var(--accent-blue); color: #fff; text-align: center; }
.ext-btn:hover { background-color: #0066cc; transform: translateY(-2px); box-shadow: 0 4px 15px rgba(0, 136, 255, 0.3); }
.ext-btn.outline { background-color: transparent; border: 2px solid var(--text-main); color: var(--text-main); }
.ext-btn.outline:hover { background-color: var(--text-main); color: #fff; box-shadow: none; }
.detail-gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 15px; margin-bottom: 40px; }
.gallery-item { aspect-ratio: 4 / 3; border-radius: 8px; overflow: hidden; background-color: var(--bg-sub); }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.gallery-item:hover img { transform: scale(1.05); }

/* --- スマホ向け調整 --- */
@media (max-width: 768px) {
    .hero { aspect-ratio: 16 / 9; }
    .hero-content { padding-left: 5%; }
    .main-title { font-size: 8rem; -webkit-text-stroke: 2px #ffffff; transform: translateY(40%); }
    .concept-text { font-size: 1.5rem; letter-spacing: 0.2em; }
    .about-wrapper { flex-direction: column; gap: 30px; }
    .about-image { max-width: 100%; }
    .header-logo { font-size: 1.2rem; }
    .header-nav ul { gap: 15px; }
    .header-nav a { font-size: 0.85rem; }
    .about-content, .profile-details { padding: 20px; }
    .profile-book { grid-template-columns: 1fr; gap: 5px 15px; padding: 20px; }
    .profile-book dt { text-align: left; border-right: none; margin-top: 15px; }
    .profile-book dt:first-child { margin-top: 0; }
    .history-item { flex-direction: column; }
    .history-date { margin-bottom: 5px; }
    .detail-title { font-size: 1.8rem; }
    .detail-meta { flex-direction: column; gap: 5px; }
    .external-links { flex-direction: column; }
    .detail-content { padding: 20px; }
}