body {
            display: flex;
            justify-content: center;
            align-items: flex-start;
            min-height: 100vh;
            margin: 0;
            background-color: #f8fafc;
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            padding: 20px 0;
        }

        .container {
            text-align: left; 
            padding: 10px;
            width: 100%;
            max-width: 1200px;
        }

        .main-layout {
            display: flex;
            flex-direction: row; 
            flex-wrap: wrap; /* Permite empilhar no celular */
            align-items: flex-start; 
            justify-content: center;
            gap: 20px; 
        }

        .view-panel {
            display: flex;
            flex-direction: row;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            flex: 1; /* Ocupa o espaço que sobrar */
            min-width: 300px;
        }

        .canvas-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            background: white;
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
        }

        canvas {
            display: block;
            cursor: grab;
            border-radius: 8px;
            user-select: none;
            -webkit-user-select: none;
            max-width: 100%; /* Garante que não vaza da tela no mobile */
            height: auto;
        }
        canvas:active { cursor: grabbing; }

        .control-panel {
            flex: 0 0 320px; /* Largura fixa no PC */
            background-color: #f1f5f9; 
            padding: 20px;
            border-radius: 12px;
            border: 1px solid #e2e8f0;
            display: flex;
            flex-direction: column;
            gap: 15px;
            max-height: 90vh;
            overflow-y: auto; /* Barra de rolagem se a tela for baixa */
        }

        .control-panel h3 { margin: 0 0 5px 0; color: #1e293b; font-size: 1.1rem; border-bottom: 2px solid #cbd5e1; padding-bottom: 5px; }
        .control-panel p { margin: 0; color: #64748b; font-size: 0.9rem; line-height: 1.4; }

        .inputs-container { display: flex; flex-direction: column; gap: 8px; margin-top: 5px; }
        .input-group {
            display: flex; align-items: center; justify-content: space-between; 
            background: white; padding: 6px 10px; border-radius: 6px; border: 1px solid #cbd5e1;
        }
        .input-group label { font-weight: bold; color: #475569; font-size: 0.9rem; }
        .input-group input { width: 60px; padding: 4px; border: 1px solid #cbd5e1; border-radius: 4px; text-align: center; font-size: 1rem; outline: none; }
        .input-group input:focus { border-color: #38bdf8; }

        .info-panel { margin-top: 5px; padding-top: 10px; border-top: 1px solid #e2e8f0; }
        .info-panel h4 { margin: 0 0 5px 0; color: #1e293b; font-size: 0.95rem; }
        
        .morfologia-panel { margin-top: 10px; border-top: 1px solid #e2e8f0; padding-top: 10px; }
        .morfologia-panel h4 { margin: 0 0 10px 0; color: #1e293b; font-size: 1rem; }
        
        .qrs-grid { display: flex; gap: 15px; }
        .qrs-col { flex: 1; display: flex; flex-direction: column; gap: 5px; }
        .qrs-row { display: flex; align-items: center; gap: 5px; font-weight: bold; font-size: 0.8rem; }
        
        .qrs-canvas {
            background-color: #fff;
            background-image: linear-gradient(rgba(255, 150, 150, 0.3) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 150, 150, 0.3) 1px, transparent 1px);
            background-size: 10px 10px; 
            border-radius: 4px; border: 1px solid #cbd5e1;
            width: 100%; height: 35px;
        }
        .angle-list { display: flex; flex-direction: column; gap: 4px; margin-top: 5px; }
        .angle-item { background: #e2e8f0; padding: 4px 8px; border-radius: 4px; display: flex; justify-content: space-between; font-size: 0.85rem; border: 1px solid transparent; transition: 0.2s; }
        /* RESPONSIVIDADE PARA CELULAR/TABLET */
        @media (max-width: 900px) {
            .main-layout { flex-direction: column; align-items: center; }
            .control-panel { flex: none; width: 100%; max-width: 500px; box-sizing: border-box; }
        }