/* ======================================
   WHATSAPP ENTRY ANIMATION
   ====================================== */

/* Estado inicial del botón (fuera de pantalla) */
.whatsapp-container {
    animation: whatsappEntry 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
    animation-delay: 0.5s; /* Pequeño delay para que cargue la página primero */
    opacity: 0;
    transform: translateX(100px) translateY(100px) scale(0.9);
}

/* Animación de entrada */
@keyframes whatsappEntry {
    from {
        opacity: 0;
        transform: translateX(100px) translateY(100px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateX(0) translateY(0) scale(1);
    }
}

/* Efectos de hover para desktop */
.whatsapp-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 35px rgba(37, 211, 102, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Efecto de foco para accesibilidad */
.whatsapp-btn:focus {
    outline: 2px solid rgba(37, 211, 102, 0.6);
    outline-offset: 3px;
    transform: scale(1.05);
    box-shadow: 0 15px 35px rgba(37, 211, 102, 0.4);
}

/* ======================================
   RESPONSIVE ADJUSTMENTS
   ====================================== */

/* En tablets */
@media (max-width: 768px) {
    .whatsapp-container {
        bottom: 20px;
        right: 20px;
    }

    .whatsapp-btn {
        padding: 12px 16px;
        width: 70px;
        font-size: 15px;
    }

    .whatsapp-btn:hover {
        width: 280px;
    }

    .whatsapp-icon {
        width: 35px;
        height: 35px;
    }

    /* Ajustar animación para tablet */
    .whatsapp-container {
        animation-duration: 0.6s;
    }
}

/* En móviles pequeños */
@media (max-width: 480px) {
    .whatsapp-container {
        bottom: 15px;
        right: 15px;
    }

    .whatsapp-btn {
        padding: 10px 14px;
        width: 60px;
        font-size: 14px;
    }

    .whatsapp-btn:hover {
        width: 250px;
    }

    .whatsapp-icon {
        width: 30px;
        height: 30px;
    }

    /* Animación más rápida en móvil */
    .whatsapp-container {
        animation-duration: 0.5s;
        animation-delay: 0.3s;
    }
}

/* ======================================
   OPTIMIZACIONES PARA ACCESIBILIDAD
   ====================================== */

/* Soporte para dispositivos con modo de movimiento reducido */
@media (prefers-reduced-motion: reduce) {
    .whatsapp-container {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }

    .whatsapp-btn:hover,
    .whatsapp-btn:focus {
        transform: scale(1.03); /* Scale más sutil sin movimiento */
        box-shadow: 0 12px 25px rgba(37, 211, 102, 0.3);
    }
}

/* Soporte para dispositivos touch (sin hover) */
@media (hover: none) and (pointer: coarse) {
    .whatsapp-btn:active {
        transform: scale(0.97);
        transition: transform 0.15s ease;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    }
}

/* ======================================
   EFECTOS VISUALES ADICIONALES
   ====================================== */

/* Efecto de brillo sutil en el icono */
.whatsapp-icon {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    transition: filter 0.3s ease;
}

.whatsapp-btn:hover .whatsapp-icon {
    filter: drop-shadow(0 3px 8px rgba(0, 0, 0, 0.15));
}

/* Efecto de ripple sutil al hacer click */
.whatsapp-btn:active {
    transform: scale(0.97);
    transition: transform 0.15s ease;
}

/* ======================================
   VARIACIONES PARA DIFERENTES ESTADOS
   ====================================== */

/* Estado de carga (opcional) */
.whatsapp-btn.loading {
    pointer-events: none;
    opacity: 0.8;
}

/* Estado de éxito (feedback visual) */
.whatsapp-btn.success {
    background: #4CAF50 !important;
    animation: successPulse 0.6s ease-in-out;
}

@keyframes successPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.whatsapp-btn.success::after {
    content: '✓';
    position: absolute;
    right: 15px;
    font-size: 18px;
    font-weight: bold;
    animation: fadeInCheck 0.3s ease-out;
}

@keyframes fadeInCheck {
    from {
        opacity: 0;
        transform: scale(0.5) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ======================================
   OPTIMIZACIONES DE PERFORMANCE
   ====================================== */

/* Usar GPU acceleration */
.whatsapp-container,
.whatsapp-btn {
    will-change: transform, opacity;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

/* Optimizar para navegadores */
.whatsapp-container,
.whatsapp-btn {
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}