.pes-app-container {
            --bg-color: #0f172a;
            --panel-bg: #1e293b;
            --accent: #38bdf8;
            --accent-glow: rgba(56, 189, 248, 0.35);
            --text: #FFFFFF;
            --text-muted: #94a3b8;
            --border: #334155;
            --correct: #22c55e;
            --wrong: #ef4444;

            width: 100%;
            max-width: 100%;
            box-sizing: border-box;
            background-color: var(--panel-bg);
            color: var(--text);
            border-radius: 16px;
            padding: clamp(0.75rem, 4cqi, 1.5rem);
            box-shadow: 0 8px 25px rgba(0,0,0,0.4);
            border: 1px solid var(--border);
            text-align: center;
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            user-select: none;
            container-type: inline-size; /* Ativa Container Queries para responsividade perfeita */
        }

        .pes-app-container * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        .pes-app-container header h2 {
            font-size: clamp(1.1rem, 4.5cqi, 1.5rem);
            color: var(--accent);
            margin-bottom: 0.3rem;
            line-height: 1.2;
        }

        .pes-app-container header p {
            font-size: clamp(0.75rem, 2.8cqi, 0.85rem);
            color: var(--text-muted);
            margin-bottom: 1rem;
        }

        .pes-app-container .display-area {
            position: relative;
            width: clamp(100px, 32cqi, 160px);
            height: clamp(100px, 32cqi, 160px);
            margin: 0 auto 1rem auto;
            display: flex;
            justify-content: center;
            align-items: center;
            background: rgba(15, 23, 42, 0.6);
            border-radius: 50%;
            border: 2px solid var(--border);
            box-shadow: inset 0 0 15px rgba(0,0,0,0.5);
        }

        .pes-app-container .number-display {
            font-size: clamp(2.8rem, 11cqi, 4.5rem);
            font-weight: 800;
            color: var(--accent);
            text-shadow: 0 0 20px var(--accent-glow);
            transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

        .pes-app-container .number-display.reveal {
            transform: scale(1.1);
        }

        .pes-app-container .timer-progress {
            position: absolute;
            top: -2px;
            left: -2px;
            width: calc(100% + 4px);
            height: calc(100% + 4px);
            border-radius: 50%;
            pointer-events: none;
        }

        .pes-app-container .timer-svg {
            width: 100%;
            height: 100%;
            transform: rotate(-90deg);
        }

        .pes-app-container .timer-circle {
            fill: none;
            stroke: var(--accent);
            stroke-width: 4;
            stroke-dasharray: 502.65;
            stroke-dashoffset: 502.65;
            stroke-linecap: round;
            transition: stroke-dashoffset 0.1s linear;
        }

        .pes-app-container .instruction {
            font-size: clamp(0.8rem, 3cqi, 0.95rem);
            min-height: 2.5rem;
            margin-bottom: 1rem;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: center;
            line-height: 1.3;
        }

        .pes-app-container .controls {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            margin-bottom: 1rem;
        }

        .pes-app-container .btn {
            background: var(--accent);
            color: var(--bg-color);
            border: none;
            padding: clamp(0.6rem, 2.5cqi, 0.85rem) 1rem;
            font-size: clamp(0.85rem, 3cqi, 1rem);
            font-weight: 700;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.2s ease;
            box-shadow: 0 4px 15px var(--accent-glow);
            width: 100%;
        }

        .pes-app-container .btn:hover:not(:disabled) {
            opacity: 0.9;
            transform: translateY(-2px);
        }

        .pes-app-container .btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
            box-shadow: none;
        }

        .pes-app-container .feedback-btns {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.6rem;
        }

        .pes-app-container .btn-correct {
            background: var(--correct);
            color: #fff;
            box-shadow: 0 4px 15px rgba(34, 197, 94, 0.3);
        }

        .pes-app-container .btn-wrong {
            background: var(--wrong);
            color: #fff;
            box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
        }

        .pes-app-container .stats-panel {
            background: rgba(15, 23, 42, 0.5);
            border-radius: 10px;
            padding: 0.75rem 0.5rem;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0.3rem;
            border: 1px solid rgba(255,255,255,0.05);
        }

        .pes-app-container .stat-item {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .pes-app-container .stat-label {
            font-size: clamp(0.6rem, 2cqi, 0.7rem);
            color: var(--text-muted);
            text-transform: uppercase;
            margin-bottom: 0.1rem;
        }

        .pes-app-container .stat-value {
            font-size: clamp(0.85rem, 3.2cqi, 1.1rem);
            font-weight: bold;
        }

        .pes-app-container .hidden {
            display: none !important;
        }