body {
    font-family: Arial,Helvetica,sans-serif;
    margin: 0;
    background: #f6f7fb;
    color: #111
}

.center-card {
    max-width: 420px;
    margin: 120px auto;
    padding: 20px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(0,0,0,.08);
    text-align: center
}

    .center-card input {
        width: 100%;
        padding: 10px;
        margin: 8px 0;
        border-radius: 6px;
        border: 1px solid #ddd
    }

    .center-card button {
        padding: 10px 14px;
        border-radius: 8px;
        border: none;
        background: #4a6cf7;
        color: #fff;
        cursor: pointer
    }

header {
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fff;
    margin-bottom: 10px
}

.controls-row {
    display: flex;
    gap: 8px;
    align-items: center
}

    .controls-row input {
        padding: 8px;
        border-radius: 8px;
        border: 1px solid #ddd
    }

    .controls-row button {
        padding: 8px;
        border-radius: 8px;
        border: none;
        background: #4a6cf7;
        color: #fff
    }

main {
    display: flex;
    gap: 20px;
    max-width: 1000px;
    margin: 10px auto;
    padding: 0 12px
}

.left {
    flex: 1
}

.right {
    width: 360px
}

.list {
    background: #fff;
    border-radius: 10px;
    padding: 10px;
    box-shadow: 0 6px 18px rgba(0,0,0,.05);
    max-height: 60vh;
    overflow: auto
}

.track {
    display: flex;
    justify-content: space-between;
    padding: 8px;
    border-bottom: 1px solid #f0f0f0
}

    .track b {
        display: block
    }

.player.card {
    padding: 14px;
    border-radius: 10px;
    background: #fff;
    box-shadow: 0 6px 18px rgba(0,0,0,.05)
}

.controls {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 8px
}

.big-controls {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-top: 12px;
}

.big-controls button {
  font-size: 26px;
  padding: 14px 20px;
  border-radius: 14px;
}

.volume-controls {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 10px;
}

.volume-controls button {
  font-size: 20px;
  padding: 10px 16px;
  border-radius: 12px;
}