body {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    font-family: 'Century Gothic', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
}

.whatsapp-bg {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    border: 1px solid #374151;
}

.qr-container {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.pulse-animation {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.whatsapp-green {
    background: #13AE72;
}

.text-green {
    color: #13AE72;
}

.border-green {
    border-color: #13AE72;
}

.btn-hover {
    transition: all 0.3s ease;
}

    .btn-hover:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 20px rgba(19, 174, 114, 0.3);
    }

.fade-in {
    animation: fadeIn 0.8s ease-in-out;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }

    50% {
        opacity: .8;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}