:root {
            --neon-red: #ff0000;
            --dark-bg: #050505;
            --card-bg: #0d0d0d;
        }

        body {
            background-color: var(--dark-bg);
            color: white;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            margin: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            min-height: 100vh;
            overflow-x: hidden;
        }

        .main-container {
            max-width: 1000px;
            width: 90%;
            margin-top: 30px;
            text-align: center;
        }

        /* PAINEL CENTRAL */
        .heart-monitor {
            background: #000;
            border: 2px solid #1a1a1a;
            border-radius: 15px;
            padding: 30px;
            position: relative;
            box-shadow: 0 0 30px rgba(255, 0, 0, 0.15);
            margin-bottom: 40px;
            overflow: hidden;
            min-height: 220px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .blink { animation: blinker 0.5s linear 3; }
        @keyframes blinker {
            50% { color: var(--neon-red); text-shadow: 0 0 30px var(--neon-red); }
        }

        #heartCanvas {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 80px;
            opacity: 0.3;
            pointer-events: none;
        }

        .chamada-cliente { position: relative; z-index: 2; }
        .atendimento-label { color: var(--neon-red); font-size: 12px; text-transform: uppercase; letter-spacing: 3px; margin-bottom: 10px; }
        .nome-atual { font-size: 52px; font-weight: 800; color: #fff; text-shadow: 0 0 20px rgba(255, 255, 255, 0.2); margin: 10px 0; text-transform: uppercase; }

        .proximos-container {
            margin-top: 20px;
            padding-top: 15px;
            border-top: 1px solid #1a1a1a;
            display: flex;
            justify-content: center;
            gap: 30px;
            font-size: 14px;
            color: #555;
        }

        .horario-item {
            color: var(--neon-red);
            font-weight: bold;
            font-family: 'Courier New', monospace;
            margin-right: 5px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        /* CARDS PRESERVADOS */
        .stat-card {
            background: var(--card-bg);
            padding: 25px;
            border-radius: 12px;
            border-left: 5px solid var(--neon-red);
            text-align: left;
            transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            cursor: pointer;
            border-top: 1px solid rgba(255,0,0,0.05);
            border-right: 1px solid rgba(255,0,0,0.05);
        }

        .stat-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 25px rgba(255, 0, 0, 0.25);
            border-color: var(--neon-red);
            background: #111;
        }

        .label { font-size: 11px; color: #777; text-transform: uppercase; letter-spacing: 2px; }
        .stat-value { font-size: 24px; font-family: 'Courier New', monospace; color: var(--neon-red); font-weight: bold; }
        .sub-label { font-size: 12px; color: #aaa; text-transform: uppercase; }

        .status-pulse { animation: pulse-red 2s infinite; }
        @keyframes pulse-red {
            0% { opacity: 1; }
            50% { opacity: 0.5; }
            100% { opacity: 1; }
        }

        /* CONTROLES */
        .controles-painel {
            display: flex;
            gap: 15px;
            justify-content: center;
            margin-bottom: 20px;
        }

        .btn-chamar {
            background: var(--neon-red);
            color: white;
            border: none;
            padding: 20px 40px;
            border-radius: 8px;
            cursor: pointer;
            font-weight: bold;
            font-size: 16px;
            box-shadow: 0 4px 15px rgba(255,0,0,0.3);
            transition: 0.3s;
            text-transform: uppercase;
        }

        .btn-voltar-atendimento {
            background: #1a1a1a;
            color: #777;
            border: 1px solid #333;
            padding: 20px 30px;
            border-radius: 8px;
            cursor: pointer;
            font-weight: bold;
            transition: 0.3s;
            text-transform: uppercase;
        }

        .btn-chamar:hover { background: #cc0000; transform: scale(1.05); }
        .btn-voltar-atendimento:hover { background: #222; color: #fff; border-color: #555; }
        .btn-voltar { color: #555; text-decoration: none; font-size: 13px; margin-top: 15px; display: inline-block; }
    
        .btn-voltar-principal {
    display: inline-block;
    margin-top: 30px;
    padding: 15px 35px;
    background-color: transparent;
    color: #ffffff;
    text-decoration: none;
    font-weight: 800;
    font-size: 14px;
    border: 2px solid var(--neon-red);
    border-radius: 5px;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 0 15px rgba(255, 0, 0, 0.3);
}

.btn-voltar-principal:hover {
    background-color: var(--neon-red);
    color: #000; /* Texto fica preto no fundo vermelho para contraste */
    box-shadow: 0 0 30px var(--neon-red), 0 0 50px rgba(255, 0, 0, 0.6);
    transform: translateY(-3px);
}

/* Ajuste no botão de reset para não competir visualmente */
button[onclick="resetarSistema()"] {
    display: block;
    width: 100%;
    opacity: 0.3;
    margin-top: 20px;
}

button[onclick="resetarSistema()"]:hover {
    opacity: 1;
    color: var(--neon-red) !important;
}