body {
    margin: 0;
    font-family: Arial;
    background: #0a0a0f;
    color: white;
    overflow: hidden;
}

/* SIDEBAR */
.sidebar {
    width: 240px;
    height: 100vh;
    background: #000;
    padding: 20px;
    box-shadow: 0 0 40px rgba(29,185,84,0.15);
}

.sidebar h1 {
    color: #1DB954;
    text-shadow: 0 0 10px #1DB954;
}

/* MAIN */
.container {
    display: flex;
    height: 100vh;
}

/* MAIN CONTENT */
.main {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

/* CARDS */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 15px;
}

.card {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    padding: 15px;
    border-radius: 14px;
    cursor: pointer;
    transition: 0.3s;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.card:hover {
    transform: scale(1.06);
    box-shadow: 0 0 25px rgba(29,185,84,0.4);
}

/* PLAYER */
.player {
    position: fixed;
    bottom: 0;
    left: 240px;
    right: 0;
    height: 90px;
    background: rgba(20,20,25,0.9);
    backdrop-filter: blur(15px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    border-top: 1px solid rgba(29,185,84,0.2);
}

/* VISUALIZER */
.visualizer {
    display: flex;
    gap: 3px;
    align-items: flex-end;
    height: 40px;
}

.bar {
    width: 4px;
    height: 10px;
    background: #1DB954;
    animation: bounce 1s infinite ease-in-out;
    box-shadow: 0 0 10px #1DB954;
}

.bar:nth-child(2) { animation-delay: 0.1s; }
.bar:nth-child(3) { animation-delay: 0.2s; }
.bar:nth-child(4) { animation-delay: 0.3s; }
.bar:nth-child(5) { animation-delay: 0.4s; }

@keyframes bounce {
    0%,100% { height: 10px; }
    50% { height: 40px; }
}

/* BUTTON */
button {
    background: #1DB954;
    border: none;
    padding: 10px 15px;
    border-radius: 30px;
    color: white;
    cursor: pointer;
    box-shadow: 0 0 15px rgba(29,185,84,0.5);
}

button:hover {
    transform: scale(1.1);
}