* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #1a1a1a;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.game-wrapper {
    width: 100%;
    max-width: 450px;
}

header {
    text-align: center;
    color: #ffffff;
    margin-bottom: 30px;
}

header h3 {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    color: #b0b0b0;
    margin-bottom: 10px;
}

header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #ffffff;
}

header p {
    font-size: 16px;
    color: #b0b0b0;
}

.game-container {
    background: #2a2a2a;
    border: 2px solid #6E88B0;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.input-group {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
    align-items: center;
}

.number-display {
    background: linear-gradient(135deg, #6E88B0 0%, #5a7399 100%);
    color: #F2E0D0;
    font-size: 42px;
    font-weight: bold;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(110, 136, 176, 0.3);
}

input[type="number"] {
    flex: 1;
    padding: 15px;
    font-size: 18px;
    border: 2px solid #6E88B0;
    border-radius: 8px;
    background-color: #1a1a1a;
    color: #F2E0D0;
    transition: all 0.3s ease;
}

input[type="number"]:focus {
    outline: none;
    border-color: #F2E0D0;
    box-shadow: 0 0 10px rgba(242, 224, 208, 0.3);
}

input[type="number"]::placeholder {
    color: #666;
}

input[type="number"]:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-submit {
    background: linear-gradient(135deg, #6E88B0 0%, #5a7399 100%);
    color: #F2E0D0;
    border: none;
    padding: 15px 25px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(110, 136, 176, 0.4);
    white-space: nowrap;
}

.btn-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(110, 136, 176, 0.5);
    background: linear-gradient(135deg, #7a95c0 0%, #6E88B0 100%);
}

.btn-submit:active:not(:disabled) {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.feedback {
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    padding: 12px;
    border-radius: 8px;
    min-height: 20px;
    color: #F2E0D0;
}

.feedback.success {
    background-color: rgba(76, 175, 80, 0.2);
    color: #4CAF50;
    border: 1px solid #4CAF50;
}

.feedback.low {
    background-color: rgba(76, 175, 80, 0.2);
    color: #4CAF50;
    border: 1px solid #4CAF50;
}

.feedback.high {
    background-color: rgba(244, 67, 54, 0.2);
    color: #f44336;
    border: 1px solid #f44336;
}

.feedback.warning {
    background-color: rgba(255, 193, 7, 0.2);
    color: #FFC107;
    border: 1px solid #FFC107;
}

.stats-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.stat-box {
    flex: 1;
    background: #1a1a1a;
    border: 2px solid #6E88B0;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 12px;
    color: #b0b0b0;
    margin-bottom: 8px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.stat-value {
    display: block;
    font-size: 32px;
    font-weight: bold;
    color: #F2E0D0;
}

.separator {
    height: 1px;
    background: linear-gradient(90deg, transparent, #6E88B0, transparent);
    margin: 20px 0;
}

.history-section {
    margin-bottom: 20px;
}

.history-section h4 {
    font-size: 12px;
    color: #b0b0b0;
    margin-bottom: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.history-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 35px;
}

.badge {
    background: #1a1a1a;
    border: 2px solid #6E88B0;
    color: #F2E0D0;
    padding: 8px 14px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
}

.badge.baixo {
    border-color: #4CAF50;
    color: #4CAF50;
    background: rgba(76, 175, 80, 0.1);
}

.badge.alto {
    border-color: #f44336;
    color: #f44336;
    background: rgba(244, 67, 54, 0.1);
}

.badge.acerto {
    border-color: #4CAF50;
    color: #F2E0D0;
    background: #4CAF50;
    font-weight: 700;
}

.btn-reset {
    width: 100%;
    background: linear-gradient(135deg, #F2E0D0 0%, #E8D4BC 100%);
    color: #2a2a2a;
    border: none;
    padding: 15px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(242, 224, 208, 0.3);
}

.btn-reset:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(242, 224, 208, 0.4);
    background: linear-gradient(135deg, #E8D4BC 0%, #DEC8A8 100%);
}

.btn-reset:active {
    transform: translateY(0);
}

/* Responsivo */
@media (max-width: 480px) {
    header h1 {
        font-size: 32px;
    }

    .game-container {
        padding: 20px;
    }

    .input-group {
        flex-direction: column;
        gap: 12px;
    }

    .number-display {
        width: 80px;
        height: 80px;
        font-size: 32px;
    }

    input[type="number"] {
        width: 100%;
    }

    .btn-submit {
        width: 100%;
    }

    .badge {
        padding: 6px 12px;
        font-size: 12px;
    }
}