* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --purple: #B3A4C3;
    --purple-light: #B19CD9; 
    --purple-dark: #663399;
    --green: #b3c6b0;
    --green-light: #66FF8C;
    --green-dark: #228B22;
    --red: #983739;
    --red-light: #FF6B6B;
    --red-dark: #8B0000;
    --yellow: #F9F5AA;
    --yellow-light: #FFFF99;
    --yellow-dark: #DAA520;
    --blue: #A1C7D4;
    --blue-light: #87CEEB;
    --blue-dark: #2F4F4F;
    --bg-primary: #0a0a0a;
    --bg-secondary: #169598;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
}

.download-item {
    grid-column: 1 / -1;
    margin-top: 1rem;
    justify-content: center !important;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.download-btn:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.1));
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    color: var(--text-primary);
    text-decoration: none;
}

.download-btn.disabled {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    cursor: not-allowed;
    opacity: 0.7;
}

.download-btn.disabled:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
    border-color: rgba(255, 255, 255, 0.1);
    transform: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.download-subtitle {
    display: block;
    font-size: 0.75rem;
    opacity: 0.8;
    font-weight: 400;
}

.download-icon {
    font-size: 1.1rem;
}

.download-text {
    font-family: 'Inter', sans-serif;
}

body {
    font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--purple);
    animation: colorCycle 30s ease-in-out infinite;
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
    transition: background-color 3s ease-in-out;
}

@keyframes colorCycle {
    0%, 20% { background-color: var(--purple); }
    20%, 40% { background-color: var(--green); }
    40%, 60% { background-color: var(--red); }
    60%, 80% { background-color: var(--yellow); }
    80%, 100% { background-color: var(--blue); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.main-content {
    width: 100%;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    align-items: stretch;
}

.left-column,
.right-column {
    display: flex;
    flex-direction: column;
    gap: 15px;
    height: 100%;
}

.left-column {
    align-self: stretch;
}

.right-column {
    align-self: stretch;
}

.left-column {
    justify-content: stretch;
}

.right-column {
    justify-content: flex-start;
}

.album-showcase {
    background: rgba(0, 0, 0, 0.4);
    padding: 25px;
    border-radius: 20px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 
        0 15px 30px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.album-cover {
    position: relative;
    text-align: center;
    margin-bottom: 15px;
}

.album-cover img {
    width: 100%;
    max-width: 280px;
    height: auto;
    border-radius: 15px;
    box-shadow: 
        0 15px 30px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.album-cover img:hover {
    transform: scale(1.02) rotateY(2deg);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.2),
        0 0 30px rgba(153, 102, 204, 0.2);
}

.album-info h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    margin-bottom: 20px;
    text-align: center;
    background: linear-gradient(135deg, 
        var(--purple) 0%, 
        var(--green) 25%, 
        var(--red) 50%, 
        var(--yellow) 75%, 
        var(--blue) 100%);
    background-size: 300% 300%;
    animation: gradientShift 8s ease infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    letter-spacing: 1px;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    25% { background-position: 25% 50%; }
    50% { background-position: 50% 50%; }
    75% { background-position: 75% 50%; }
}

.info-grid {
    display: grid;
    width: 100%;
    align-content: center;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.info-item:hover {
    border-bottom-color: rgba(255, 255, 255, 0.3);
    transform: translateX(5px);
}

.label {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.value {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 500;
}

.vocals-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.vocal-name {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 500;
}

.tracklist {
    background: rgba(0, 0, 0, 0.4);
    padding: 25px;
    border-radius: 20px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 
        0 15px 30px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    flex: 1;
}


.tracks {
    display: grid;
    gap: 12px;
}

.track-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 25px;
    padding: 20px 25px;
    border-radius: 12px;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
    align-items: center;
    text-decoration: none;
}

.track-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

/* Track-specific color themes - Always active */
.track-item:nth-child(1) {
    background: rgba(153, 102, 204, 0.15);
    border-color: var(--purple);
    box-shadow: 
        0 10px 30px rgba(153, 102, 204, 0.4),
        inset 0 1px 0 rgba(153, 102, 204, 0.3);
}

.track-item:nth-child(1)::before {
    background: linear-gradient(135deg, rgba(153, 102, 204, 0.2), rgba(177, 156, 217, 0.15));
    opacity: 1;
}

.track-item:nth-child(1):hover {
    transform: translateY(-5px);
    box-shadow: 
        0 15px 35px rgba(153, 102, 204, 0.5),
        inset 0 1px 0 rgba(153, 102, 204, 0.4);
}

.track-item:nth-child(2) {
    background: rgba(80, 200, 120, 0.15);
    border-color: var(--green);
    box-shadow: 
        0 10px 30px rgba(80, 200, 120, 0.4),
        inset 0 1px 0 rgba(80, 200, 120, 0.3);
}

.track-item:nth-child(2)::before {
    background: linear-gradient(135deg, rgba(80, 200, 120, 0.2), rgba(102, 255, 140, 0.15));
    opacity: 1;
}

.track-item:nth-child(2):hover {
    transform: translateY(-5px);
    box-shadow: 
        0 15px 35px rgba(80, 200, 120, 0.5),
        inset 0 1px 0 rgba(80, 200, 120, 0.4);
}

.track-item:nth-child(3) {
    background: rgba(220, 20, 60, 0.15);
    border-color: var(--red);
    box-shadow: 
        0 10px 30px rgba(220, 20, 60, 0.4),
        inset 0 1px 0 rgba(220, 20, 60, 0.3);
}

.track-item:nth-child(3)::before {
    background: linear-gradient(135deg, rgba(220, 20, 60, 0.2), rgba(255, 107, 107, 0.15));
    opacity: 1;
}

.track-item:nth-child(3):hover {
    transform: translateY(-5px);
    box-shadow: 
        0 15px 35px rgba(220, 20, 60, 0.5),
        inset 0 1px 0 rgba(220, 20, 60, 0.4);
}

.track-item:nth-child(4) {
    background: rgba(255, 215, 0, 0.15);
    border-color: var(--yellow);
    box-shadow: 
        0 10px 30px rgba(255, 215, 0, 0.4),
        inset 0 1px 0 rgba(255, 215, 0, 0.3);
}

.track-item:nth-child(4)::before {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 255, 153, 0.15));
    opacity: 1;
}

.track-item:nth-child(4):hover {
    transform: translateY(-5px);
    box-shadow: 
        0 15px 35px rgba(255, 215, 0, 0.5),
        inset 0 1px 0 rgba(255, 215, 0, 0.4);
}

.track-item:nth-child(5) {
    background: rgba(70, 130, 180, 0.15);
    border-color: var(--blue);
    box-shadow: 
        0 10px 30px rgba(70, 130, 180, 0.4),
        inset 0 1px 0 rgba(70, 130, 180, 0.3);
}

.track-item:nth-child(5)::before {
    background: linear-gradient(135deg, rgba(70, 130, 180, 0.2), rgba(135, 206, 235, 0.15));
    opacity: 1;
}

.track-item:nth-child(5):hover {
    transform: translateY(-5px);
    box-shadow: 
        0 15px 35px rgba(70, 130, 180, 0.5),
        inset 0 1px 0 rgba(70, 130, 180, 0.4);
}

.track-number {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-secondary);
    opacity: 0.8;
}

.track-title {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: color 0.3s ease;
    letter-spacing: 0.3px;
}

.track-duration {
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0.7;
}

.links {
    background: rgba(0, 0, 0, 0.4);
    padding: 50px;
    border-radius: 20px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.links h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: var(--text-primary);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.link-buttons {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    padding: 15px 35px;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    border: 2px solid transparent;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--purple), var(--blue));
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--purple-light), var(--blue-light));
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(153, 102, 204, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .content-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .album-showcase {
        text-align: center;
        padding: 25px;
    }
    
    .album-info h2 {
        font-size: 1.8rem;
    }
    
    .track-item {
        grid-template-columns: auto 1fr;
        gap: 15px;
    }
    
    .track-duration {
        grid-column: 1 / -1;
        text-align: center;
        margin-top: 5px;
        font-size: 0.9rem;
    }
    
    .container {
        padding: 15px;
    }
    
    .tracklist {
        padding: 25px 20px;
    }
    
    .album-cover img {
        max-width: 250px;
    }
}

/* Video Container */
.video-container {
    position: relative;
    width: 100%;
    background: rgba(0, 0, 0, 0.4);
    padding: 25px;
    border-radius: 20px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 
        0 15px 30px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.video-embed {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: 15px;
}

.video-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 15px;
}