body {
    margin:0;
    padding:0;
    background:#0b0b1f;
    color:white;
    font-family:'Segoe UI', sans-serif;
    text-align:center;
}

header {
    background:#11112b;
    padding:15px;
    box-shadow:0 2px 20px rgba(0,255,234,0.4);
}
header h1 {
    color:#00ffe0;
    text-shadow:0 0 15px #00ffe0,0 0 30px #00ffe0;
    margin:0;
    font-size:2.5em;
}

.controls-global {
    margin:20px;
}
.controls-global button {
    margin:5px;
    padding:12px 22px;
    border:none;
    border-radius:20px;
    background:#00ffe0;
    color:#000;
    font-weight:bold;
    cursor:pointer;
    transition:0.2s;
    box-shadow:0 0 10px #00ffe0,0 0 20px #00ffe0 inset;
}
.controls-global button:hover {
    transform:scale(1.1);
    background:#00c8b0;
}

#timelineContainer { margin:20px auto; width:900px; }
#timeline {
    background:#111;
    border:2px solid #00ffe0;
    border-radius:8px;
    cursor:pointer;
}

.track {
    position:relative;
    border-radius:15px;
    margin:10px auto;
    padding:10px;
    width:900px;
    background: linear-gradient(145deg,#11112b,#1c1c40);
    box-shadow:0 0 25px rgba(0,255,224,0.3);
}

.track h3 {
    margin:0 0 5px 0;
    color:#00ffe0;
    text-shadow:0 0 10px #00ffe0;
}

.track-controls {
    margin-bottom:5px;
}

.track-controls button {
    margin:3px;
    padding:5px 12px;
    border:none;
    border-radius:8px;
    background:#00ffe0;
    font-weight:bold;
    cursor:pointer;
}
.track-controls button:hover {
    background:#00c8b0;
    transform:scale(1.05);
}

canvas.spectrum {
    display:block;
    margin:5px auto;
    background:#111;
    border-radius:6px;
    cursor:pointer;
    box-shadow:0 0 15px #00ffe0;
}