/* ========================================== */
/*          BOTÓN FLOTANTE WHATSAPP          */
/*              PROFESIONAL 2024             */
/* ========================================== */

.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #25d366 0%, #20b954 50%, #128c7e 100%);
    color: white;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 
        0 8px 25px rgba(37, 211, 102, 0.4),
        0 4px 15px rgba(0, 0, 0, 0.15);
    z-index: 9999;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    border: 3px solid rgba(255, 255, 255, 0.2);
}

.whatsapp-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.whatsapp-btn:hover::before {
    opacity: 1;
}

.whatsapp-btn i {
    font-size: 2.2rem;
    z-index: 2;
    transition: all 0.3s ease;
}

.whatsapp-btn .whatsapp-text {
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(37, 211, 102, 0.95);
    color: white;
    padding: 8px 16px;
    border-radius: 25px;
    white-space: nowrap;
    font-size: 0.9rem;
    font-weight: 600;
    margin-right: 15px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-50%) translateX(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    font-family: 'Inter', sans-serif;
}

.whatsapp-btn .whatsapp-text::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -5px;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid rgba(37, 211, 102, 0.95);
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: 
        0 12px 35px rgba(37, 211, 102, 0.5),
        0 8px 25px rgba(0, 0, 0, 0.2);
    background: linear-gradient(135deg, #128c7e 0%, #20b954 50%, #25d366 100%);
}

.whatsapp-btn:hover .whatsapp-text {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

.whatsapp-btn:hover i {
    transform: scale(1.1);
}

.whatsapp-btn:active {
    transform: scale(1.05);
}

/* Animación de flotación */
@keyframes whatsapp-float {
    0%, 100% { 
        transform: translateY(0px); 
    }
    25% { 
        transform: translateY(-8px); 
    }
    50% { 
        transform: translateY(-5px); 
    }
    75% { 
        transform: translateY(-12px); 
    }
}

.whatsapp-btn {
    animation: whatsapp-float 4s ease-in-out infinite;
}

.whatsapp-btn:hover {
    animation-play-state: paused;
}

/* Pulse effect para llamar la atención */
@keyframes whatsapp-pulse {
    0% {
        box-shadow: 
            0 8px 25px rgba(37, 211, 102, 0.4),
            0 4px 15px rgba(0, 0, 0, 0.15),
            0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 
            0 8px 25px rgba(37, 211, 102, 0.4),
            0 4px 15px rgba(0, 0, 0, 0.15),
            0 0 0 15px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 
            0 8px 25px rgba(37, 211, 102, 0.4),
            0 4px 15px rgba(0, 0, 0, 0.15),
            0 0 0 0 rgba(37, 211, 102, 0);
    }
}

.whatsapp-btn.pulse {
    animation: whatsapp-pulse 2s ease-in-out infinite;
}

/* ========================================== */
/*              RESPONSIVE DESIGN            */
/* ========================================== */

/* Tablets */
@media (max-width: 768px) {
    .whatsapp-btn {
        width: 65px;
        height: 65px;
        bottom: 25px;
        right: 25px;
    }
    
    .whatsapp-btn i {
        font-size: 2rem;
    }
    
    .whatsapp-btn .whatsapp-text {
        font-size: 0.85rem;
        padding: 6px 14px;
    }
}

/* Móviles */
@media (max-width: 480px) {
    .whatsapp-btn {
        width: 60px;
        height: 60px;
        bottom: 20px;
        right: 20px;
    }
    
    .whatsapp-btn i {
        font-size: 1.8rem;
    }
    
    .whatsapp-btn .whatsapp-text {
        display: none; /* Ocultar texto en móviles para no saturar */
    }
}

/* Modo oscuro (si se implementa en el futuro) */
@media (prefers-color-scheme: dark) {
    .whatsapp-btn {
        border-color: rgba(255, 255, 255, 0.3);
    }
}

/* Accesibilidad - Reducir movimiento si el usuario lo prefiere */
@media (prefers-reduced-motion: reduce) {
    .whatsapp-btn {
        animation: none !important;
    }
    
    .whatsapp-btn:hover {
        transform: none;
    }
}

/* Estados de enfoque para accesibilidad */
.whatsapp-btn:focus {
    outline: none;
    box-shadow: 
        0 12px 35px rgba(37, 211, 102, 0.5),
        0 8px 25px rgba(0, 0, 0, 0.2),
        0 0 0 3px rgba(37, 211, 102, 0.3);
}

/* ========================================== */
/*            VARIACIONES DE ESTADO          */
/* ========================================== */

/* Botón pulsante para páginas importantes */
.whatsapp-btn.important {
    animation: whatsapp-pulse 2s ease-in-out infinite;
}

/* Botón más discreto para páginas de contenido */
.whatsapp-btn.subtle {
    opacity: 0.9;
    transform: scale(0.9);
}

.whatsapp-btn.subtle:hover {
    opacity: 1;
    transform: scale(1);
}