* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
}

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #000;
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
    color: #fff;
}

/* Backgrounds */
#bg-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#visualizer {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    transition: opacity 1s ease;
}

#teaser-video {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 2;
    opacity: 0;
    transition: opacity 0.5s ease;
    filter: brightness(0.5) contrast(1.2);
}

#jacket-bg-container {
    position: absolute;
    top: -10%; left: -10%;
    width: 120%;
    height: 120%;
    z-index: 3;
    opacity: 0;
    transition: opacity 1.5s cubic-bezier(0.19, 1, 0.22, 1), transform 1.5s cubic-bezier(0.19, 1, 0.22, 1);
    transform: scale(1.1);
    will-change: transform, opacity;
}

#jacket-bg-container.active {
    opacity: 1;
    transform: scale(1);
}

#jacket-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: blur(30px) brightness(0.4);
    transform: translateZ(0); /* Force GPU render */
}

.jacket-bg-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: radial-gradient(circle at center, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.8) 100%);
    z-index: 3;
}

#particles-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
    mix-blend-mode: screen;
}


/* Modes Base */
.mode {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.8s cubic-bezier(0.19, 1, 0.22, 1), transform 0.8s cubic-bezier(0.19, 1, 0.22, 1);
    transform: scale(1.05);
    will-change: opacity, transform;
}

.mode.active {
    opacity: 1;
    pointer-events: auto;
    transform: scale(1);
}

.back-btn {
    position: absolute;
    top: 40px;
    left: 40px;
    background: linear-gradient(135deg, rgba(255,255,255,0.4) 0%, rgba(255,255,255,0.1) 100%);
    backdrop-filter: blur(40px) saturate(200%);
    -webkit-backdrop-filter: blur(40px) saturate(200%);
    border: none;
    color: white;
    font-size: 16px;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: 30px;
    cursor: pointer;
    z-index: 100;
    box-shadow: 
        0 10px 30px rgba(0,0,0,0.3),
        inset 0 1px 1px rgba(255,255,255,0.8),
        inset 0 -1px 1px rgba(255,255,255,0.2),
        0 0 0 1px rgba(255,255,255,0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}

.back-btn:active {
    transform: scale(0.95);
    box-shadow: 
        0 5px 15px rgba(0,0,0,0.4),
        inset 0 1px 1px rgba(255,255,255,0.5),
        0 0 0 1px rgba(255,255,255,0.2);
}

/* 1. Signage Mode */
#signage-mode {
    background: rgba(0, 0, 0, 0.2);
}

.tap-wrapper {
    text-align: center;
    cursor: pointer;
    padding: 50px;
    position: relative;
}

.tap-bg-blur {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 150%; height: 200%;
    background: radial-gradient(circle, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 70%);
    filter: blur(30px);
    z-index: -1;
    pointer-events: none;
}

.tap-text {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: 4px;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.9);
    animation: breathe 3s infinite ease-in-out;
    line-height: 1.4;
}

.tap-subtext {
    font-size: 1.2rem;
    margin-top: 15px;
    color: rgba(255,255,255,0.7);
    letter-spacing: 2px;
}

@keyframes breathe {
    0%, 100% { opacity: 0.6; transform: scale(0.98); }
    50% { opacity: 1; transform: scale(1.03); text-shadow: 0 0 50px rgba(255, 255, 255, 1); }
}

/* 2. EP Selection Mode */
.ep-carousel-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    transform: translateY(-30px);
}

.ep-selection-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    margin-top: 40px;
    letter-spacing: 2px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.5);
    background: linear-gradient(135deg, #ffffff 0%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.catalog-info-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 450px; /* Match the jacket container height */
    overflow-y: auto;
    -ms-overflow-style: none;
    scrollbar-width: none;
}
.catalog-info-container::-webkit-scrollbar {
    display: none;
}

.ep-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    padding-bottom: 10px;
    gap: 5px;
}

.ep-header h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin: 0;
    white-space: nowrap;
}

.ep-header h2 {
    font-size: 1.6rem;
    font-weight: 500;
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
}

.artist-info-group {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 15px;
    width: 100%;
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 0;
}

.social-btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.social-btn svg {
    width: 16px;
    height: 16px;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.social-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.social-btn:hover svg {
    opacity: 1;
}

.catalog-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    height: auto;
}

.catalog-meta {
    display: flex;
    align-items: baseline;
    gap: 20px;
    margin-bottom: 30px;
}

.catalog-price {
    font-size: 3.2rem;
    font-weight: 800;
    color: #fff;
    text-shadow: 0 4px 20px rgba(255,255,255,0.3);
}

.catalog-tracks {
    font-size: 1.5rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 16px;
    border-radius: 20px;
}

.catalog-desc-box {
    background: rgba(20, 20, 20, 0.6);
    border-left: 4px solid rgba(255, 255, 255, 0.8);
    padding: 20px 30px;
    border-radius: 0 16px 16px 0;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.catalog-desc-box p {
    font-size: 1.6rem;
    font-weight: 400;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

.catalog-tracklist {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-right: 20px;
    padding-bottom: 60px;
    overflow-y: visible;
    flex: none;
}

.catalog-tracklist::-webkit-scrollbar { 
    display: none; 
}

.catalog-track-item {
    font-size: 1.4rem;
    color: rgba(255, 255, 255, 0.7);
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}


.ep-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-content: flex-start;
    gap: 25px;
    padding: 20px 40px;
    width: 95%;
    max-height: calc(100vh - 380px); /* Strictly end before mini player */
    overflow-y: auto;
    /* Hide scrollbar */
    -ms-overflow-style: none;  
    scrollbar-width: none;  
}

.ep-list::-webkit-scrollbar { 
    display: none; 
}

.ep-card {
    width: 220px;
    height: 220px;
    border-radius: 15px;
    position: relative;
    cursor: pointer;
    transition: transform 0.5s cubic-bezier(0.19, 1, 0.22, 1), box-shadow 0.5s;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2), 0 5px 15px rgba(0,0,0,0.1);
    overflow: hidden;
    animation: swoopIn 0.8s cubic-bezier(0.19, 1, 0.22, 1) both;
    will-change: transform;
}

@keyframes swoopIn {
    0% { opacity: 0; transform: translateY(30px) scale(0.95); }
    100% { opacity: 1; transform: translateY(0) scale(1); }
}

.ep-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.ep-card::after {
    content: '';
    position: absolute;
    top:0; left:0; width:100%; height:100%;
    background: linear-gradient(to bottom, transparent 60%, rgba(0,0,0,0.9) 100%);
}

.ep-card-title {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    z-index: 2;
    font-size: 1.2rem;
    font-weight: bold;
    text-shadow: 0 2px 4px rgba(0,0,0,0.8);
}

.ep-card-artist {
    position: absolute;
    bottom: 45px;
    left: 20px;
    right: 20px;
    z-index: 2;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    text-shadow: 0 2px 4px rgba(0,0,0,0.8);
}

.ep-card:active {
    transform: scale(0.95);
}


/* 3. Catalog Mode (Player Mode) */
#catalog-mode {
    /* Uses default .mode centering */
}

.player-container {
    width: 90%;
    max-width: 1100px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
    padding-top: 60px;
    padding-bottom: 60px;
}

.player-content-wrapper {
    display: flex;
    align-items: center;
    gap: 60px;
    width: 100%;
    flex: 1;
}

/* macOS Window focus liquid glass effect */
#jacket-container {
    flex: 0 0 450px;
    height: 450px;
    border-radius: 24px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.6);
    filter: none;
}

#current-jacket {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.5s;
}

.glass-reflection {
    position: absolute;
    top: 0; left: -100%;
    width: 50%; height: 100%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0) 100%);
    transform: skewX(-20deg);
    transition: none;
    animation: shine 6s infinite cubic-bezier(0.19, 1, 0.22, 1);
}

@keyframes shine {
    0% { left: -100%; }
    20% { left: 200%; }
    100% { left: 200%; }
}

/* Hide player controls wrapper */
#player-controls-wrapper {
    display: none;
}

.artist-filter-wrapper {
    position: absolute;
    top: 40px;
    right: 12px;
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    gap: 15px;
    z-index: 100;
}

.artist-filter-list {
    display: flex;
    gap: 15px;
    transition: all 0.6s cubic-bezier(0.19, 1, 0.22, 1);
    opacity: 1;
    max-width: 1000px;
    overflow: hidden;
    padding: 20px;
    margin: -20px;
}

.artist-avatar-wrapper {
    position: relative;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255,255,255,0.4) 0%, rgba(255,255,255,0.1) 100%);
    box-shadow: 
        0 15px 35px rgba(0,0,0,0.15),
        inset 0 1px 1px rgba(255,255,255,0.8),
        inset 0 -1px 1px rgba(255,255,255,0.2),
        0 0 0 1px rgba(255,255,255,0.3);
    cursor: pointer;
    transition: transform 0.6s cubic-bezier(0.19, 1, 0.22, 1), opacity 0.6s cubic-bezier(0.19, 1, 0.22, 1), filter 0.6s cubic-bezier(0.19, 1, 0.22, 1);
    display: flex;
    justify-content: center;
    align-items: center;
}

.artist-avatar-wrapper:active {
    transform: scale(0.95);
}

.artist-avatar-wrapper.hidden {
    opacity: 0.3;
    transform: scale(0.8);
    filter: grayscale(80%);
}

.artist-avatar-wrapper img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    border-radius: 50%;
    background-color: rgba(200, 200, 200, 0.5);
    transition: all 0.8s ease;
}

.close-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 22px;
    height: 22px;
    background: rgba(255, 50, 50, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    color: white;
    font-size: 14px;
    font-weight: bold;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transform: scale(0);
    transition: all 0.6s cubic-bezier(0.19, 1, 0.22, 1);
    backdrop-filter: blur(5px);
}

.artist-avatar-wrapper.selected .close-badge {
    opacity: 1;
    transform: scale(1);
}

.artist-avatar-wrapper.selected {
    box-shadow: 
        0 20px 50px rgba(255,255,255,0.3),
        inset 0 1px 1px rgba(255,255,255,0.8),
        inset 0 -1px 1px rgba(255,255,255,0.2),
        0 0 0 2px rgba(255,255,255,0.8);
}

/* Marquee / Fade-out effect for long titles */
.marquee-container {
    width: 100%;
    overflow: hidden;
    position: relative;
}

.marquee-container.is-overflowing {
    mask-image: linear-gradient(to right, black 85%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, black 85%, transparent 100%);
}

.marquee-content {
    display: inline-block;
    white-space: nowrap;
    will-change: transform;
    min-width: 100%;
}

.marquee-container.is-overflowing .marquee-content {
    /* Animation is now dynamically applied via JS to ensure correct widths are caught */
}

@keyframes marquee-scroll {
    0%, 15% { transform: translateX(0); }
    85%, 100% { transform: translateX(var(--scroll-dist)); }
}

/* Mini Player (Apple Liquid Glass Style) */
.mini-player {
    position: absolute;
    bottom: 120px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    width: 90%;
    max-width: 700px;
    height: 80px;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0.05) 100%);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 40px;
    display: flex;
    align-items: center;
    padding: 10px 20px;
    box-shadow: 
        0 20px 40px rgba(0,0,0,0.3), 
        inset 0 1px 1px rgba(255,255,255,0.4);
    opacity: 0;
    pointer-events: none;
    transition: all 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}

.mini-player.catalog-active {
    bottom: 90px; /* Shift down slightly (about 1/4) in catalog mode */
}

.mini-player.active {
    opacity: 1;
    pointer-events: auto;
}

.mini-volume {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-left: 20px;
    padding-left: 20px;
    border-left: 1px solid rgba(255,255,255,0.2);
}

.mini-volume svg {
    width: 24px;
    height: 24px;
    cursor: pointer;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

#global-volume-slider {
    width: 100px;
    height: 6px;
    cursor: pointer;
    accent-color: #fff;
    background: rgba(255,255,255,0.2);
    border-radius: 3px;
    appearance: none;
    outline: none;
}
#global-volume-slider::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}

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

.spinning-record {
    border-radius: 50%;
    animation: spin 6s linear infinite;
}

#mini-jacket {
    height: 60px;
    width: 60px;
    object-fit: cover;
    margin-right: 20px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

.mini-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
}

#mini-track {
    font-size: 1.4rem;
    font-weight: bold;
    margin: 0;
    white-space: nowrap;
}

#mini-ep {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    margin: 4px 0 0 0;
    white-space: nowrap;
}

/* Responsive Design for Smartphones */
@media (max-width: 768px) {
    /* Base */
    html {
        font-size: 14px;
    }
    .tap-text {
        font-size: 1.5rem;
        letter-spacing: 2px;
        padding: 0 10px;
    }
    .tap-subtext {
        font-size: 0.9rem;
    }
    .back-btn {
        top: 15px;
        left: 15px;
        padding: 8px 16px;
        font-size: 14px;
        z-index: 1000;
    }

    /* EP Selection Mode */
    .artist-filter-wrapper {
        top: 15px;
        right: 15px;
        gap: 8px;
    }
    .artist-avatar-wrapper {
        width: 40px;
        height: 40px;
    }
    .ep-carousel-container {
        padding-top: 60px;
    }
    .ep-selection-title {
        font-size: 2rem;
        margin-bottom: 10px;
    }
    .ep-list {
        padding: 10px 10px 120px 10px;
        gap: 15px;
        max-height: calc(100vh - 180px); /* Adjust for mobile */
    }
    .ep-card {
        width: 140px;
        height: 140px;
    }
    .ep-card-title {
        font-size: 1rem;
        bottom: 10px;
        left: 10px;
        right: 10px;
    }
    .ep-card-artist {
        font-size: 0.8rem;
        bottom: 25px;
        left: 10px;
        right: 10px;
    }

    /* Catalog Mode */
    #catalog-mode {
        align-items: flex-start;
        overflow-y: auto;
        padding-bottom: 100px; /* Space for mini player */
    }
    .player-container {
        padding-top: 70px;
        padding-bottom: 20px;
        height: auto;
        justify-content: flex-start;
        margin: 0 auto;
    }
    .player-content-wrapper {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }
    #jacket-container {
        flex: 0 0 250px;
        width: 250px;
        height: 250px;
    }
    .catalog-info-container {
        width: 100%;
    }
    .ep-header h1 {
        font-size: 2.2rem;
        white-space: normal; /* Allow title to wrap on mobile */
    }
    .artist-info-group {
        gap: 10px;
    }
    .catalog-details {
        height: auto;
        margin-top: 10px;
    }
    .catalog-meta {
        margin-bottom: 15px;
        flex-direction: column;
        gap: 10px;
    }
    .catalog-price {
        font-size: 2.5rem;
    }
    .catalog-desc-box {
        padding: 15px;
    }
    .catalog-desc-box p {
        font-size: 1.2rem;
    }
    .catalog-tracklist {
        height: auto;
        overflow-y: visible;
        flex: none;
        padding-bottom: 120px;
        margin-top: 15px;
        align-items: center; /* Center images */
    }
    .catalog-track-item {
        font-size: 1.2rem;
        width: 100%;
    }

    /* Mini Player */
    .mini-player, .mini-player.catalog-active {
        bottom: 10px;
        left: 50%;
        transform: translateX(-50%);
        width: 95%;
        padding: 10px;
        border-radius: 20px;
    }
    #mini-jacket {
        width: 45px;
        height: 45px;
        margin-right: 10px;
    }
    #mini-track {
        font-size: 1.1rem;
    }
    #mini-ep {
        font-size: 0.9rem;
    }
    /* Hide the volume slider and social links on mobile to save space */
    #global-volume-slider, #mini-social-links {
        display: none !important;
    }
    .mini-volume {
        margin-left: 10px;
        padding-left: 10px;
    }
}

/* Image Modal (Lightbox) */
.image-modal {
    display: flex;
    position: fixed;
    z-index: -1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, z-index 0s linear 0.3s;
}

.image-modal.active {
    z-index: 2000;
    opacity: 1;
    pointer-events: auto;
    transition: opacity 0.3s ease, z-index 0s;
}

.image-modal-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    cursor: pointer;
}

.image-modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.8);
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.19, 1, 0.22, 1);
    z-index: 2001;
}

.image-modal.active .image-modal-content {
    transform: scale(1);
}

.image-modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 30px;
    font-weight: bold;
    cursor: pointer;
    z-index: 2002;
    transition: transform 0.2s;
}

.image-modal-close:active {
    transform: scale(0.8);
}