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

body {
    background-color: #080808;
    overflow: hidden;
    min-height: 100vh;
}

/* Photoshop-style transparency checkerboard, very dark/subtle */
.bg-checker {
    position: fixed;
    inset: 0;
    z-index: -999;
    background-image:
        conic-gradient(#0d0d0d 90deg, #060606 90deg 180deg,
                       #0d0d0d 180deg 270deg, #060606 270deg);
    background-size: 32px 32px;
    background-position: 0 0;
}

/* particles canvas sits above checker, below gradient */
#particles {
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
}
#particles canvas {
    position: absolute !important;
    top: 0; left: 0;
    width: 100% !important;
    height: 100% !important;
}

/* Faint bottom-darker gradient (barely visible) */
.bg-gradient {
    position: fixed;
    inset: 0;
    z-index: -133;
    pointer-events: none;
    background: linear-gradient(to top,
        rgb(17, 17, 17) 0%,
        rgba(17, 17, 17, 0.7) 20%);
}

.container {
    max-width: 828px;
    margin: 20px auto 0;
    display: flex;
    justify-content: center;
}

.logo img {
    height: 42px;
    user-select: none;
    -webkit-user-select: none;
    -webkit-user-drag: none;
    pointer-events: none;
    transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.25s ease;
    will-change: transform, opacity;
}

.logo {
    position: relative;
    display: inline-block;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
}

/* Easter-egg tag message (same vibe as the cover tag) */
.logo-egg {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    background: #000;
    color: #e9e9e9;
    font: 500 12px/1 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    white-space: nowrap;
    padding: 8px 12px;
    border-radius: 7px;
    border: 1px solid #222;
    opacity: 0;
    pointer-events: none;
    z-index: 100;
    transition: opacity 0.22s ease, transform 0.22s ease;
}
.logo-egg::before {
    content: "";
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-bottom-color: #000;
}
.logo-egg.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.logo:hover img { transform: scale(1.12); opacity: 0.75; }
.logo img.hold { transform: scale(0.9); opacity: 0.6; transition: transform 0.08s, opacity 0.08s; }
.logo img.bounce { animation: bounce 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards; }

@keyframes bounce {
    0%{transform:scale(0.9);opacity:0.6;} 35%{transform:scale(0.88);opacity:0.55;}
    55%{transform:scale(1.08);opacity:0.8;} 75%{transform:scale(0.95);opacity:0.9;}
    90%{transform:scale(1.02);} 100%{transform:scale(1);opacity:1;}
}

/* ===== Player widget ===== */
.player {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.player-box {
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 0;
    background: hsla(0, 0%, 7%, 0.8);
     backdrop-filter: blur(4px);
    border: 1px solid #1d1d1d50;
    border-radius: 16px;
    padding: 12px;
    width: 356px;
    height: 88px;
    box-sizing: border-box;
}

.cover-slot {
    position: relative;
    width: 64px;
    height: 64px;
    flex-shrink: 0;
}

/* Ghost placeholder that stays in the slot while cover flies */
.cover-slot::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 8px;
    border: 1.5px dashed #222;
    opacity: 0;
    transition: opacity 0.2s ease;
}
.cover-slot.empty::before { opacity: 1; }

.cover {
    position: relative;
    z-index: 1;
    width: 64px;
    height: 64px;
    border-radius: 8px;
    object-fit: cover;
    cursor: grab;
    user-select: none;
    -webkit-user-select: none;
    -webkit-user-drag: none;
    touch-action: none;
    transform-origin: center;
    /* spring-back transition, removed while actively dragging */
    transition: transform 0.55s cubic-bezier(0.22, 1.4, 0.4, 1),
                box-shadow 0.25s ease;
    will-change: transform;
}

.cover.grabbing {
    cursor: grabbing;
    transition: box-shadow 0.2s ease; /* no transform transition during drag */
    z-index: 50;
    box-shadow: 0 18px 40px rgba(0,0,0,0.55);
}

.cover-slot:hover .cover:not(.grabbing) { transform: scale(1.04); }

/* Locked after download: inactive + faded */
.cover.used {
    opacity: 0.12;
    cursor: not-allowed;
    pointer-events: none;
}
.cover-slot.locked { cursor: not-allowed; }
.cover-slot:hover .cover.used { transform: scale(1) !important; }
/* no tag once downloaded */
.cover-slot.locked:hover .tag { opacity: 0 !important; }

/* Hover tag */
.tag {
    position: absolute;
    bottom: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background: #000;
    color: #e9e9e9;
    font: 500 12px/1 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    white-space: nowrap;
    padding: 7px 11px;
    border-radius: 7px;
    opacity: 0;
    pointer-events: none;
    z-index: 60;
    transition: opacity 0.18s ease, transform 0.18s ease;
}
.tag::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: #000;
}
.cover-slot:hover .tag { opacity: 1; transform: translateX(-50%) translateY(0); }
.cover-slot.dragging .tag { opacity: 0 !important; }

.arrow {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3a3a3a;
    transition: color 0.2s ease, transform 0.2s ease;
}
.arrow svg { width: 22px; height: 22px; }
.arrow.active { color: #777; transform: translateX(3px); }

.drop-zone {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
    border: 1.5px dashed #2a2a2a;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3a3a3a;
    transition: border-color 0.18s ease, color 0.18s ease,
                background 0.18s ease, transform 0.18s ease;
}
.drop-zone svg { width: 22px; height: 22px; }
.drop-zone.over {
    border-color: #6a6a6a;
    color: #cfcfcf;
    background: #161616;
    transform: scale(1.08);
}
.drop-zone.done { border-color: #ffffff3f; color: #ffffff; }