/* リセットとベーススタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: #000;
    color: #fff;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ヒーローセクション */
.hero {
    height: 100vh;
    background: url('drg.png') center center;
    background-size: contain;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-color: #000;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}


.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.artist-name {
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    line-height: 1.1;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    animation: fadeInUp 2s ease-out;
}

/* 先行レビューセクション */
.advance-review {
    position: relative;
    padding: 110px 0 90px;
    background: radial-gradient(circle at top right, rgba(64, 64, 64, 0.25), transparent 55%),
                linear-gradient(135deg, #050505 0%, #0d0d0d 55%, #060606 100%);
    overflow: hidden;
}

.advance-review::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.05) 0%, transparent 45%, rgba(255, 255, 255, 0.04) 100%);
    opacity: 0.6;
    pointer-events: none;
}

.advance-review-inner {
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 50px 45px;
    background: rgba(10, 10, 10, 0.55);
    backdrop-filter: blur(8px);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.45);
}

.advance-review-header {
    max-width: 720px;
}

.advance-review-kicker {
    display: inline-block;
    font-size: 0.8rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 14px;
}

.advance-review-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 18px;
    color: #fafafa;
}

.advance-review-subhead {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.65);
    letter-spacing: 0.12em;
}

.advance-review-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    margin-top: 45px;
}

.advance-review-card {
    position: relative;
    padding: 28px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(18, 18, 18, 0.65);
    box-shadow: 0 22px 35px rgba(0, 0, 0, 0.35);
    font-size: 0.98rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.78);
}

.advance-review-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(255, 255, 255, 0.05);
    pointer-events: none;
}

.advance-review-card--primary {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(18, 18, 18, 0.65));
    color: rgba(255, 255, 255, 0.9);
}

.advance-review-footnote {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    margin-top: 48px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 26px;
}

.advance-review-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.advance-review-tags span {
    display: inline-flex;
    align-items: center;
    padding: 7px 14px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.04);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.75);
    text-transform: uppercase;
}

.advance-review-note {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

.advance-review-link {
    margin-top: 36px;
}

.advance-review-link a {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: #fff;
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.07);
}

.advance-review-link a::after {
    content: '↗';
    font-size: 1rem;
    transform: translateY(-1px);
}

.advance-review-link a:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.32);
}

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

/* 配信情報セクション */
.distribution {
    padding: 90px 0;
    background: #080808;
}

.distribution-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 50px;
}

.distribution-kicker {
    display: inline-block;
    font-size: 0.8rem;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 12px;
}

.distribution-header h2 {
    font-size: clamp(2.1rem, 4vw, 2.8rem);
    margin-bottom: 12px;
    letter-spacing: 0.06em;
}

.distribution-header p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    font-size: 1rem;
}

.distribution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    align-items: stretch;
}

.distribution-card {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 28px;
    background: rgba(255, 255, 255, 0.02);
    box-shadow: 0 25px 40px rgba(0, 0, 0, 0.4);
    height: 100%;
}

.distribution-card--apple {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(18, 18, 18, 0.7));
}

.distribution-card-headline span {
    display: inline-block;
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
}

.distribution-card-headline h3 {
    font-size: 1.6rem;
    margin-top: 8px;
    margin-bottom: 20px;
}

.distribution-embed iframe {
    border-radius: 16px;
    width: 100%;
    min-height: 360px;
}

.distribution-card--links {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 28px;
}

.platform-group {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 22px;
}

.platform-label {
    display: inline-block;
    font-size: 0.78rem;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 16px;
}

.platform-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.platform-button {
    flex: 1 1 120px;
    text-align: center;
    padding: 12px 18px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    text-decoration: none;
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
}

.platform-button:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.35);
}

.distribution-note {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
}

/* 楽曲リストセクション */
.songs {
    padding: 80px 0;
    background-color: #111;
}

.songs-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 20px;
    margin-top: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.song-item {
    cursor: pointer;
    transition: all 0.3s ease;
    animation: fadeInUp 0.8s ease-out;
    animation-fill-mode: both;
    display: flex;
    align-items: center;
    padding: 20px;
    border: 1px solid #333;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.02);
}

.song-item:nth-child(1) { animation-delay: 0.1s; }
.song-item:nth-child(2) { animation-delay: 0.2s; }
.song-item:nth-child(3) { animation-delay: 0.3s; }
.song-item:nth-child(4) { animation-delay: 0.4s; }
.song-item:nth-child(5) { animation-delay: 0.5s; }
.song-item:nth-child(6) { animation-delay: 0.6s; }
.song-item:nth-child(7) { animation-delay: 0.7s; }

.song-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: #555;
}

.song-number {
    font-size: 1.2rem;
    font-weight: 300;
    color: #666;
    margin-right: 20px;
    width: 30px;
}

.song-title {
    flex: 1;
    font-size: 1.2rem;
    font-weight: 600;
    text-align: left;
    transition: color 0.3s ease;
}

.song-item:hover .song-title {
    color: #ccc;
}

.song-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.lyrics-button {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.lyrics-button:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

.streaming-links {
    display: flex;
    gap: 8px;
}

/* 歌詞セクション */
.lyrics-section {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.lyrics-section.active {
    opacity: 1;
    visibility: visible;
}

.lyrics-section .container {
    position: relative;
    max-height: 80vh;
    overflow-y: auto;
}

.lyrics-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.top-button {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.top-button:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.close-lyrics {
    background: none;
    border: none;
    color: #fff;
    font-size: 2rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease;
}

.close-lyrics:hover {
    color: #ccc;
}

.lyrics-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
}

.lyrics-content {
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 960px;
    margin: 0 auto;
    white-space: normal;
}

.lyrics-dual {
    display: grid;
    gap: 24px;
}

@media (min-width: 768px) {
    .lyrics-dual {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.lyrics-body {
    text-align: left;
    background: rgba(255, 255, 255, 0.05);
    padding: 24px 28px;
    border-radius: 16px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

.lyrics-body h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 18px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.lyrics-body--translation h3 {
    letter-spacing: 0.05em;
    text-transform: none;
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.album-extra {
    padding: 90px 0;
    background: #000;
    border-top: 1px solid #191919;
}

.album-extra .container {
    display: flex;
    flex-direction: column;
    gap: 50px;
    align-items: center;
    max-width: 900px;
}

.album-extra-video {
    width: 100%;
}

.album-extra-story {
    font-size: 1rem;
    line-height: 1.9;
    color: #ddd;
}

.album-release-note {
    font-size: 0.95rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #f5c46b;
    margin-bottom: 1.8em;
}

.album-extra-story p {
    margin-bottom: 1.4em;
    text-align: left;
}

.album-extra-story p:last-child {
    margin-bottom: 0;
}

.album-extra-link {
    margin-top: 30px;
    text-align: center;
}

.album-extra-link a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: #fff;
    text-decoration: none;
    letter-spacing: 0.05em;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.album-extra-link a::after {
    content: '↗';
    font-size: 0.9rem;
}

.album-extra-link a:hover {
    border-color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-1px);
}

/* コンタクトセクション */
.contact {
    padding: 60px 0;
    background-color: #111;
    border-top: 1px solid #333;
}

.contact-title {
    font-size: 2rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 30px;
    letter-spacing: 0.1em;
}

.contact-content {
    text-align: center;
}

.contact-email {
    font-size: 1.2rem;
    color: #ccc;
    transition: color 0.3s ease;
}

.contact-email:hover {
    color: #fff;
}

/* フッター */
.footer {
    background-color: #000;
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid #333;
}

.footer p {
    color: #666;
    font-size: 0.9rem;
}

/* レスポンシブデザイン */
@media (max-width: 968px) {
    .artist-name {
        font-size: 3rem;
    }

    .song-item {
        padding: 15px;
    }

    .advance-review {
        padding: 90px 0 70px;
    }

    .advance-review-inner {
        padding: 40px 32px;
    }
}

@media (max-width: 640px) {
    .hero {
        background-size: contain;
        background-position: center center;
        background-attachment: scroll;
    }
    
    .artist-name {
        font-size: 2.5rem;
    }
    
    .song-item {
        padding: 15px;
    }

    .song-title {
        font-size: 1.1rem;
    }

    .song-number {
        font-size: 1rem;
        margin-right: 15px;
        width: 25px;
    }


    .lyrics-title {
        font-size: 1.5rem;
    }

    .lyrics-content {
        font-size: 1rem;
    }

    .advance-review-inner {
        padding: 32px 24px;
    }

    .advance-review-grid {
        gap: 18px;
    }

    .advance-review-card {
        padding: 24px;
    }

    .advance-review-footnote {
        flex-direction: column;
        align-items: flex-start;
    }

    .advance-review-note {
        font-size: 0.88rem;
    }
}

@media (max-width: 768px) {
    .album-extra {
        padding: 70px 0;
    }

    .album-extra .container {
        gap: 40px;
    }

    .album-extra-link a {
        padding: 9px 20px;
        font-size: 0.9rem;
    }
}

@media (max-width: 540px) {
    .album-extra-story {
        font-size: 0.95rem;
    }

    .album-extra-link a {
        padding: 8px 18px;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .hero {
        background-attachment: scroll;
        background-size: contain;
        background-position: center center;
    }

    .artist-name {
        font-size: 2rem;
    }

    .songs {
        padding: 60px 0;
    }

    .container {
        padding: 0 15px;
    }

    .advance-review-title {
        font-size: 1.8rem;
    }

    .advance-review-subhead {
        letter-spacing: 0.08em;
    }

    .advance-review-tags span {
        font-size: 0.7rem;
        letter-spacing: 0.06em;
        padding: 6px 12px;
    }

    .advance-review-link a {
        width: 100%;
        justify-content: center;
    }
}