.pos-payment-terminal {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 20px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    max-width: 100%;
}

.pos-payment-terminal .payment-header {
    text-align: center;
    margin-bottom: 16px;
    font-size: 14px;
    color: #6c757d;
    font-weight: 500;
}

.pos-payment-terminal .numeric-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    width: 100%;
}

.pos-payment-terminal .numeric-grid button {
    height: 56px;
    font-size: 18px;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    background: #ffffff;
    color: #2c3e50;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.pos-payment-terminal .numeric-grid button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

.pos-payment-terminal .numeric-grid button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.pos-payment-terminal .numeric-grid button:hover::before {
    left: 100%;
}

.pos-payment-terminal .numeric-grid button:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.pos-payment-terminal .numeric-grid .btn-error {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
}

.pos-payment-terminal .numeric-grid .btn-error:hover {
    background: linear-gradient(135deg, #c0392b 0%, #a93226 100%);
}

.pos-payment-terminal .numeric-grid .btn-confirm {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    grid-row: span 2;
    height: auto;
    min-height: 124px;
}

.pos-payment-terminal .numeric-grid .btn-confirm:hover {
    background: linear-gradient(135deg, #2980b9 0%, #1f6391 100%);
}

.pos-payment-terminal .numeric-grid .btn-percentage {
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
    color: white;
    font-size: 14px;
}

.pos-payment-terminal .numeric-grid .btn-percentage:hover {
    background: linear-gradient(135deg, #e67e22 0%, #d35400 100%);
}

.pos-payment-terminal .numeric-grid .btn-double-wide {
    grid-column: span 2;
}

.pos-payment-terminal .numeric-grid .btn-decimal {
    background: linear-gradient(135deg, #95a5a6 0%, #7f8c8d 100%);
    color: white;
}

.pos-payment-terminal .numeric-grid .btn-decimal:hover {
    background: linear-gradient(135deg, #7f8c8d 0%, #6c7b7d 100%);
}

@media (max-width: 768px) {
    .pos-payment-terminal {
        padding: 16px;
    }
    
    .pos-payment-terminal .numeric-grid {
        gap: 10px;
    }
    
    .pos-payment-terminal .numeric-grid button {
        height: 50px;
        font-size: 16px;
    }
    
    .pos-payment-terminal .numeric-grid .btn-confirm {
        min-height: 110px;
    }
}

@media (min-width: 768px) and (max-width: 1300px) {
    .pos-payment-terminal {
        padding: 18px;
    }
    
    .pos-payment-terminal .numeric-grid {
        gap: 14px;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .pos-payment-terminal .numeric-grid button {
        height: 58px;
        font-size: 18px;
    }
    
    .pos-payment-terminal .numeric-grid .btn-confirm {
        min-height: 130px;
    }
}

@media (min-width: 1300px) {
    
    .pos-payment-terminal .numeric-grid button {
        height: 60px;
        font-size: 20px;
    }
    
    .pos-payment-terminal .numeric-grid .btn-confirm {
        min-height: 132px;
    }
}