/* ============================================
   DELUSIONIST - Official Website
   Inspired by periphery.net
   ============================================ */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --- 変数定義 --- */
:root {
    --primary: #ffffff;
    --primary-light: #cccccc;
    --accent: #bd613c;
    --accent-hover: #d4764f;
    --text: #ffffff;
    --text-light: #999999;
    --bg-body: #111111;
    --bg-dark: #0c0c0c;
    --bg-section: #151515;
    --bg-light: #1a1a1a;
    --white: #ffffff;
    --black: #000000;
    --font-heading: 'Montserrat', 'Noto Sans JP', sans-serif;
    --font-body: 'Noto Sans JP', sans-serif;
    --transition: 0.3s ease-in-out;
}

/* --- リセット --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 10px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1.6rem;
    color: var(--text);
    line-height: 1.75;
    background-color: var(--bg-body);
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* --- 共通 --- */
.container {
    max-width: 1170px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 10rem 0;
    position: relative;
}

.section-dark {
    background-color: var(--bg-dark);
}

/* セクションタイトル */
.section-header {
    text-align: center;
    margin-bottom: 6rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 3.6rem;
    font-weight: 900;
    color: var(--primary);
    letter-spacing: 0.3rem;
    text-transform: uppercase;
    display: inline-block;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent);
    margin: 1.5rem auto 0;
}

/* スクロールアニメーション */
.section-scroll-animate {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.section-scroll-animate.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* --- ボタン --- */
.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: var(--white);
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3rem;
    padding: 1.6rem 4rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--accent-hover);
    color: var(--white);
}

.btn-primary i {
    margin-right: 0.8rem;
}

.btn-stroke {
    display: inline-block;
    background: transparent;
    color: var(--white);
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3rem;
    padding: 1.4rem 4rem;
    border: 2px solid var(--white);
    cursor: pointer;
    transition: var(--transition);
}

.btn-stroke:hover {
    background: var(--white);
    color: var(--black);
}

.btn-stroke i {
    margin-right: 0.8rem;
}

/* --- ローディング画面 --- */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--black);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-logo {
    width: 200px;
    height: 200px;
    object-fit: contain;
    animation: loadingPulse 2s ease-in-out infinite;
    display: block;
}

@keyframes loadingPulse {
    0%, 100% { opacity: 0.4; transform: scale(0.92); }
    50% { opacity: 1; transform: scale(1); }
}

/* --- ヘッダー --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 0 4rem;
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    transition: background 0.4s ease;
}

header.scrolled {
    background: rgba(0, 0, 0, 0.95);
}

/* ヘッダーナビリンク（左） */
.header-nav {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.header-nav-link {
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 700;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.25rem;
    transition: var(--transition);
    white-space: nowrap;
}

.header-nav-link:hover {
    color: var(--accent);
}

/* ヘッダー右側エリア */
.header-right {
    display: flex;
    align-items: center;
    gap: 0;
    flex-shrink: 0;
}

.header-social-links {
    display: flex;
    align-items: center;
    gap: 1.8rem;
}

.header-social-links a {
    color: var(--white);
    font-size: 18px;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.header-social-links a:hover {
    color: var(--accent);
}

.header-divider {
    width: 1px;
    height: 1.4rem;
    background: rgba(255, 255, 255, 0.4);
    margin: 0 2.4rem;
}

.header-lang {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.lang-btn {
    padding: 0;
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.05rem;
    background: transparent;
    color: rgba(255, 255, 255, 0.5);
}

.lang-btn.active {
    color: var(--white);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.lang-btn:hover:not(.active) {
    color: var(--white);
}

/* ハンバーガーメニュー（モバイル用・デスクトップ非表示） */
.menu-toggle {
    width: 28px;
    height: 18px;
    display: none;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    z-index: 1001;
    margin-left: auto;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
    transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* フルスクリーンオーバーレイナビ */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-y: auto;
    padding: 2rem 1rem;
    box-sizing: border-box;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.nav-overlay-close {
    position: absolute;
    top: 2rem;
    right: 2.5rem;
    font-size: 2.8rem;
    color: var(--white);
    cursor: pointer;
    z-index: 9999;
    transition: var(--transition);
}

.nav-overlay-close:hover {
    color: var(--accent);
}

.nav-overlay-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.nav-overlay-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.nav-overlay .nav-link {
    display: block;
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 900;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.3rem;
    padding: 1.8rem 0;
    transition: var(--transition);
}

.nav-overlay .nav-link:hover {
    color: var(--accent);
}

.nav-overlay-lang {
    margin-top: 4rem;
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.nav-overlay-lang .lang-btn {
    font-size: 2rem;
    font-weight: 700;
}

.nav-lang-divider {
    color: rgba(255, 255, 255, 0.4);
    font-size: 2rem;
    font-weight: 300;
}

.nav-overlay-social {
    margin-top: 4rem;
    display: flex;
    justify-content: center;
    gap: 2.4rem;
}

.nav-overlay-social a {
    color: var(--white);
    font-size: 2.2rem;
    transition: var(--transition);
}

.nav-overlay-social a:hover {
    color: var(--accent);
}

/* --- ヒーローセクション（動画背景） --- */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--black);
}

.hero-video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.3) 0%,
        rgba(0, 0, 0, 0.1) 40%,
        rgba(0, 0, 0, 0.4) 70%,
        rgba(17, 17, 17, 1) 100%
    );
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 0 2.4rem;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(5rem, 12vw, 12rem);
    font-weight: 900;
    letter-spacing: 1.5rem;
    text-transform: uppercase;
    color: var(--white);
    line-height: 1;
    margin-bottom: 2rem;
    animation: heroFadeIn 1.2s ease forwards;
    opacity: 0;
    text-shadow: 0 0 60px rgba(0, 0, 0, 0.5);
}

.hero-logo {
    width: clamp(280px, 50vw, 600px);
    height: auto;
    margin-bottom: 2rem;
    animation: heroFadeIn 1.2s ease forwards;
    opacity: 0;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 0.6rem;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 4rem;
    animation: heroFadeIn 1.2s ease 0.3s forwards;
    opacity: 0;
}

.hero-cta {
    animation: heroFadeIn 1.2s ease 0.6s forwards;
    opacity: 0;
}

@keyframes heroFadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* スクロールインジケーター */
.hero-scroll-indicator {
    position: absolute;
    bottom: 4rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.hero-scroll-indicator span {
    display: block;
    width: 2px;
    height: 40px;
    background: var(--accent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

/* --- MUSICセクション --- */
.section-music {
    padding: 10rem 0;
    background: var(--bg-section);
    overflow: hidden;
}

.music-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    filter: blur(40px) brightness(0.3);
    transform: scale(1.2);
    z-index: 0;
}

.music-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(17, 17, 17, 0.9) 0%,
        rgba(17, 17, 17, 0.6) 50%,
        rgba(17, 17, 17, 0.9) 100%
    );
    z-index: 1;
}

.music-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 8rem;
}

.music-artwork {
    flex: 0 0 480px;
}

.album-video {
    width: 480px;
    height: 270px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    transition: transform 0.4s ease;
}

.album-video:hover {
    transform: scale(1.03);
}

.music-info {
    flex: 1;
}

.music-release-label {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.4rem;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

.music-title {
    font-family: var(--font-heading);
    font-size: 4.8rem;
    font-weight: 900;
    letter-spacing: 0.3rem;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 2rem;
    line-height: 1.1;
}

.music-description {
    font-size: 1.6rem;
    color: var(--text-light);
    margin-bottom: 4rem;
    line-height: 1.8;
}

.music-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.music-buttons .btn-primary,
.music-buttons .btn-stroke {
    font-size: 1.3rem;
    padding: 1.4rem 3rem;
}

/* --- NEWSセクション --- */
.news-list {
    max-width: 900px;
    margin: 0 auto;
}

.news-item-link {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.news-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 2.4rem 0;
    transition: var(--transition);
    cursor: pointer;
}

.news-item-link:first-child .news-item {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.news-item-link:hover .news-item {
    background-color: rgba(255, 255, 255, 0.03);
    padding-left: 1.6rem;
    padding-right: 1.6rem;
    margin-left: -1.6rem;
    margin-right: -1.6rem;
}

.news-date {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--text-light);
    font-weight: 700;
    margin-bottom: 0.8rem;
    letter-spacing: 0.1rem;
}

.news-tag {
    display: inline-block;
    background-color: var(--accent);
    color: var(--white);
    padding: 0.3rem 1rem;
    font-size: 1rem;
    font-weight: 700;
    margin-left: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
}

.news-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.6;
    margin-top: 0.8rem;
}

.view-more-container {
    text-align: center;
    margin-top: 6rem;
}

.news-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 4rem;
    flex-wrap: wrap;
}

.news-pagination .page-btn {
    min-width: 2.5rem;
    height: 2.5rem;
    padding: 0 0.75rem;
    background: transparent;
    border: 1px solid var(--text-light, #888);
    color: inherit;
    font-family: inherit;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.news-pagination .page-btn:hover:not([disabled]):not(.active) {
    background: var(--text-light, #888);
    color: #fff;
}

.news-pagination .page-btn.active {
    background: #fff;
    color: #000;
    border-color: #fff;
    cursor: default;
}

.news-pagination .page-btn[disabled] {
    opacity: 0.3;
    cursor: not-allowed;
}

/* --- SHOWSセクション --- */
.shows-list {
    max-width: 900px;
    margin: 0 auto;
}

.shows-year-group {
    margin-bottom: 6rem;
}

.shows-year {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 900;
    color: var(--primary);
    letter-spacing: 0.2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--accent);
    margin-bottom: 0;
}

.show-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 2.4rem 0;
    display: flex;
    gap: 3rem;
    transition: var(--transition);
}

.show-item:hover {
    background-color: rgba(255, 255, 255, 0.03);
    padding-left: 1.6rem;
    padding-right: 1.6rem;
    margin-left: -1.6rem;
    margin-right: -1.6rem;
}

.show-date {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: 0.1rem;
    white-space: nowrap;
    min-width: 140px;
    flex-shrink: 0;
}

.show-day {
    color: rgba(255, 255, 255, 0.4);
    font-weight: 400;
    font-size: 1.2rem;
}

.show-details {
    flex: 1;
}

.show-event {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.4;
    margin-bottom: 0.8rem;
}

.show-venue {
    font-size: 1.4rem;
    color: var(--text-light);
    margin-bottom: 0.6rem;
}

.show-venue i {
    color: var(--accent);
    margin-right: 0.6rem;
    font-size: 1.2rem;
}

.show-lineup {
    font-size: 1.4rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
    margin-bottom: 0.6rem;
}

.show-meta {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--text-light);
    letter-spacing: 0.05rem;
    margin-bottom: 0.3rem;
}

.show-note {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 0.6rem;
    font-style: italic;
}


.show-status-badge {
    display: inline-block;
    background: #c0392b;
    color: var(--white);
    font-size: 1rem;
    font-weight: 700;
    padding: 0.2rem 0.8rem;
    letter-spacing: 0.1rem;
    margin-left: 0.8rem;
    vertical-align: middle;
}

.show-cancelled {
    opacity: 0.5;
}

.shows-footnote {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.shows-footnote p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.shows-footnote a {
    color: var(--accent);
}

.shows-footnote a:hover {
    color: var(--accent-hover);
}

/* --- DISCOGRAPHYセクション --- */
.disco-filter {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
    margin-bottom: 5rem;
}

.disco-filter-btn {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.15rem;
    color: var(--text-light);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 0.8rem 2.4rem;
    cursor: pointer;
    transition: var(--transition);
}

.disco-filter-btn:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.disco-filter-btn.active {
    color: var(--primary);
    background: var(--accent);
    border-color: var(--accent);
}

.disco-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.disco-card {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.disco-card:hover {
    transform: translateY(-6px);
}

.disco-artwork {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    margin-bottom: 1.4rem;
    background: rgba(255, 255, 255, 0.05);
}

.disco-artwork img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.disco-card:hover .disco-artwork img {
    transform: scale(1.05);
    opacity: 0.7;
}

.disco-play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: var(--transition);
}

.disco-play-overlay i {
    font-size: 3.6rem;
    color: #1DB954;
}

.disco-card:hover .disco-play-overlay {
    opacity: 1;
}

.disco-info {
    text-align: center;
}

.disco-type {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.15rem;
    color: var(--accent);
    margin-bottom: 0.4rem;
}

.disco-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.4;
    margin-bottom: 0.4rem;
}

.disco-date {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--text-light);
    letter-spacing: 0.05rem;
}

@media (max-width: 992px) {
    .disco-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2.4rem;
    }
}

@media (max-width: 768px) {
    .disco-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .disco-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.6rem;
    }

    .disco-title {
        font-size: 1.3rem;
    }

    .disco-filter-btn {
        padding: 0.6rem 1.6rem;
        font-size: 1.2rem;
    }
}

/* --- BIOGRAPHYセクション --- */
.biography-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.biography-content p {
    font-size: 1.6rem;
    line-height: 2;
    color: var(--text-light);
}

/* --- 動画セクション --- */
#videos.section {
    padding-bottom: 6rem;
}

.video-carousel-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
}

.video-carousel {
    position: relative;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.video-item {
    position: absolute;
    width: 800px;
    height: 450px;
    overflow: hidden;
    border-radius: 4px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    transform: scale(0.5);
    opacity: 0.3;
    transition: transform 0.4s ease, opacity 0.4s ease;
}

.video-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    pointer-events: none;
    transition: opacity 0.4s ease;
    border-radius: 4px;
}

.video-item:not(.active) {
    pointer-events: none;
}

.video-item.active {
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.8);
}

.video-item.active::after {
    opacity: 0;
}

.video-item iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 0;
    cursor: pointer;
    font-size: 1.6rem;
    color: var(--white);
    z-index: 10;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--white);
}

.carousel-btn.prev { left: 0; }
.carousel-btn.next { right: 0; }

/* --- フッター --- */
footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: 0;
}

.footer-inner {
    padding: 5rem 0 3rem;
    text-align: center;
}

.copyright {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--text-light);
    letter-spacing: 0.1rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* --- ページトップボタン --- */
.page-top-btn {
    position: fixed;
    bottom: 3rem;
    right: 3rem;
    width: 48px;
    height: 48px;
    background: var(--black);
    border: none;
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 900;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    font-size: 1.4rem;
}

.page-top-btn.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.page-top-btn:hover {
    background: var(--accent);
    color: var(--white);
}

/* ============================================
   レスポンシブ
   ============================================ */

@media (max-width: 992px) {
    .music-content {
        flex-direction: column;
        text-align: center;
        gap: 5rem;
    }

    .music-artwork {
        flex: none;
    }

    .album-video {
        width: 100%;
        max-width: 480px;
        height: 270px;
        margin: 0 auto;
    }

    .music-buttons {
        justify-content: center;
    }

    .music-title {
        font-size: 3.6rem;
    }

    .video-carousel {
        height: 380px;
    }

    .video-item {
        width: 560px;
        height: 315px;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 10px;
    }

    .section {
        padding: 7rem 0;
    }

    .section-title {
        font-size: 2.4rem;
        letter-spacing: 0.2rem;
    }

    .section-header {
        margin-bottom: 4rem;
    }

    /* ヘッダー */
    header {
        padding: 0 2rem;
        height: 50px;
    }

    .header-nav {
        display: none;
    }

    .header-right {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    /* モバイルメニュー（ハンバーガー） */
    .nav-overlay .nav-link {
        font-size: 1.6rem;
        letter-spacing: 0.2rem;
        padding: 0.6rem 0;
    }

    .nav-overlay-links {
        gap: 0;
    }

    .nav-overlay-lang {
        margin-top: 1.4rem;
    }

    .nav-overlay-lang .lang-btn,
    .nav-lang-divider {
        font-size: 1.3rem;
    }

    .nav-overlay-social {
        margin-top: 1.6rem;
        gap: 1.6rem;
    }

    .nav-overlay-social a {
        font-size: 1.5rem;
    }

    .nav-overlay-close {
        top: 1.2rem;
        right: 1.5rem;
        font-size: 2rem;
    }

    /* ヒーロー */
    .hero {
        min-height: 100vh;
    }

    .hero-title {
        letter-spacing: 0.6rem;
    }

    .hero-subtitle {
        font-size: 1.4rem;
        letter-spacing: 0.4rem;
    }

    .btn-primary,
    .btn-stroke {
        font-size: 1.2rem;
        padding: 1.2rem 3rem;
    }

    /* Music */
    .section-music {
        padding: 7rem 0;
    }

    .album-video {
        height: 220px;
    }

    .music-title {
        font-size: 3rem;
    }

    .music-buttons {
        flex-direction: column;
        align-items: center;
    }

    .music-buttons .btn-primary,
    .music-buttons .btn-stroke {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }

    /* Shows */
    .show-item {
        flex-direction: column;
        gap: 0.8rem;
    }

    .show-date {
        min-width: auto;
    }

    .show-event {
        font-size: 1.6rem;
    }

    /* Video */
    .video-carousel {
        height: 280px;
    }

    .video-item {
        width: 380px;
        height: 214px;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 1.4rem;
    }

    /* ローディング */
    .loading-logo {
        width: 150px;
        height: 150px;
    }

    /* ページトップ */
    .page-top-btn {
        bottom: 2rem;
        right: 2rem;
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        letter-spacing: 0.3rem;
    }

    .album-video {
        height: 180px;
    }

    .music-title {
        font-size: 2.4rem;
    }

    .video-carousel {
        height: 220px;
    }

    .video-item {
        width: 300px;
        height: 169px;
    }

    .social-links {
        gap: 1.2rem;
    }
}