.itm-piano-wrapper {
    --bg-dark: #0a0a0a;
    --bg-panel: #141414;
    --brand-primary: #ff0000;
    --brand-secondary: #333;
    --key-white: #fffff0;
    --key-black: #111;
    --text-light: #ffffff;
    --text-dim: #888888;
    
    font-family: 'Roboto Condensed', sans-serif;
    width: 100%;
    position: relative;
    box-sizing: border-box;
    /* Container prevents overflow during scaling */
    overflow: hidden; 
}

.itm-piano-wrapper * { box-sizing: border-box; user-select: none; }

.itm-piano-wrapper .piano-rack {
    /* Fixed design width for perfect layout */
    width: 800px;
    margin: 0 auto;
    background: var(--bg-panel);
    border: 1px solid #333;
    border-top: 3px solid var(--brand-primary);
    border-radius: 6px;
    padding: 20px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    position: relative;
    
    /* SCALING LOGIC - FIXED: Anchor to top left to prevent shifting right */
    transform-origin: top left;
}

/* Toolbar */
.itm-piano-wrapper .piano-toolbar {
    display: flex; justify-content: space-between; align-items: center;
    background: #000; padding: 15px; border-radius: 4px; border-bottom: 1px solid #333;
    margin-bottom: 20px; gap: 15px;
}

.itm-piano-wrapper .brand {
    font-family: 'Orbitron', sans-serif; color: var(--brand-primary); 
    font-size: 1.2rem; letter-spacing: 1px; font-weight: bold;
    white-space: nowrap;
}

.itm-piano-wrapper .controls { display: flex; gap: 20px; align-items: center; }

.itm-piano-wrapper .control-group { display: flex; flex-direction: column; gap: 4px; }
.itm-piano-wrapper .control-group label { font-size: 0.65rem; color: #666; font-weight: bold; letter-spacing: 1px; }

/* Inputs */
.itm-piano-wrapper .lcd-select {
    background: #111; color: #fff; border: 1px solid #444; padding: 5px 10px;
    font-family: inherit; font-size: 0.85rem; border-radius: 3px; cursor: pointer;
}

.itm-piano-wrapper .octave-btns { display: flex; align-items: center; background: #111; border-radius: 3px; border: 1px solid #444; }
.itm-piano-wrapper .btn-oct {
    background: transparent; border: none; color: #888; width: 30px; height: 25px; cursor: pointer;
}
.itm-piano-wrapper .btn-oct:hover { color: #fff; background: #222; }
.itm-piano-wrapper #oct-display { font-family: 'Orbitron', monospace; color: var(--brand-primary); width: 20px; text-align: center; font-size: 0.9rem; }

.itm-piano-wrapper input[type="range"].mini-slider {
    -webkit-appearance: none; width: 80px; height: 4px; background: #333; border-radius: 2px;
}
.itm-piano-wrapper input[type="range"].mini-slider::-webkit-slider-thumb {
    -webkit-appearance: none; width: 12px; height: 12px; background: var(--brand-primary); border-radius: 50%; cursor: pointer;
}

/* Keyboard */
.itm-piano-wrapper .keys-container {
    display: flex; justify-content: center; position: relative; height: 220px;
    background: #000; padding: 2px; border-radius: 4px; overflow: hidden;
}

.itm-piano-wrapper .key {
    position: relative; cursor: pointer; border-radius: 0 0 4px 4px;
    transition: background 0.1s, transform 0.05s;
}

.itm-piano-wrapper .key.white {
    width: 60px; height: 100%; background: var(--key-white);
    border: 1px solid #ccc; border-top: none; margin: 0 1px;
    z-index: 1;
}
.itm-piano-wrapper .key.white:active, .itm-piano-wrapper .key.white.active {
    background: #ddd; transform: translateY(2px); box-shadow: inset 0 -5px 10px rgba(0,0,0,0.2);
    border-bottom: 4px solid var(--brand-primary);
}

.itm-piano-wrapper .key.black {
    width: 40px; height: 60%; background: var(--key-black);
    position: absolute; top: 0; z-index: 2;
    border: 1px solid #000; border-radius: 0 0 3px 3px;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.5);
}
.itm-piano-wrapper .key.black:active, .itm-piano-wrapper .key.black.active {
    background: #333; border-bottom: 2px solid var(--brand-primary);
}

/* Labels on Keys */
.itm-piano-wrapper .key span {
    position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%);
    font-size: 0.7rem; color: #888; pointer-events: none;
}
.itm-piano-wrapper .key.black span { bottom: 5px; color: #555; }

/* Footer */
.itm-piano-wrapper .piano-footer {
    display: flex; justify-content: space-between; align-items: center;
    margin-top: 15px; padding: 0 10px;
}
.itm-piano-wrapper .note-lcd {
    font-family: 'Orbitron', monospace; font-size: 1.5rem; color: var(--brand-primary);
    background: #000; padding: 5px 15px; border: 1px solid #333; border-radius: 4px; width: 80px; text-align: center;
}
.itm-piano-wrapper .kb-hint { font-size: 0.8rem; color: #555; }

/* Overlay */
.itm-piano-wrapper .overlay-screen {
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.85); z-index: 100;
    display: flex; align-items: center; justify-content: center;
    backdrop-filter: blur(5px); transition: opacity 0.3s;
}
.itm-piano-wrapper .start-btn {
    background: var(--brand-primary); color: white; border: none; padding: 15px 30px;
    font-family: 'Orbitron', sans-serif; font-size: 1.2rem; cursor: pointer;
    border-radius: 4px; box-shadow: 0 0 20px rgba(255, 0, 0, 0.4);
}
.itm-piano-wrapper .start-btn:hover { transform: scale(1.05); }

/* Responsive */
@media (max-width: 600px) {
    /* Stack toolbar controls on mobile */
    .itm-piano-wrapper .piano-toolbar { justify-content: center; flex-direction: column; }
    .itm-piano-wrapper .controls { flex-wrap: wrap; justify-content: center; }
}