*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #FF9B7B;--accent: #FFD4C4;--dark: #2D1B14;--bg: #FFF8F5;--in-tune: #7BCF8E;--flat: #FF7B7B;--sharp: #7BB8FF}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--dark);height:100dvh;display:flex;flex-direction:column;overflow:hidden;-webkit-user-select:none;user-select:none}header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--accent)}.logo{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:var(--dark)}.settings-btn{background:none;border:none;font-size:20px;cursor:pointer;color:var(--dark);opacity:.5}.graph-container{flex:1;position:relative;margin:0 12px;min-height:0}.graph-labels{position:absolute;left:0;top:0;bottom:0;width:32px;display:flex;flex-direction:column;justify-content:space-between;padding:8px 0;z-index:1}.graph-label{font-size:10px;font-weight:600;color:var(--dark);opacity:.25;text-align:right;line-height:1}.graph-label.active{opacity:.8;color:var(--primary)}canvas#pitchGraph{position:absolute;left:36px;top:0;width:calc(100% - 36px);height:100%;border-radius:12px;background:#ff9b7b0a}.bottom-area{padding:20px;flex-shrink:0}.start-btn{width:100%;padding:18px;border:none;border-radius:16px;font-size:17px;font-weight:700;cursor:pointer;transition:all .2s;background:var(--primary);color:#fff;letter-spacing:.5px}.start-btn:active{transform:scale(.97)}.start-btn.recording{background:var(--dark)}.idle-hint{text-align:center;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:var(--dark);opacity:.15;font-size:14px;font-weight:600;pointer-events:none}