/* ========================================
   BOTÓN FLOTANTE DE WHATSAPP
   ======================================== */

.whatsapp-float {
    position: fixed;
    bottom: 25px;
    left: 25px;
    z-index: 1000;
    animation: slideInUp 0.8s ease-out;
}

.whatsapp-btn {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    padding: 12px 20px 12px 12px;
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    min-width: 60px;
    max-width: 280px;
}

.whatsapp-btn:hover {
    background: linear-gradient(135deg, #128C7E 0%, #25D366 100%);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(37, 211, 102, 0.4);
    color: white;
    text-decoration: none;
}

.whatsapp-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.whatsapp-btn:hover::before {
    left: 100%;
}

.whatsapp-icon {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    flex-shrink: 0;
}

.whatsapp-icon i {
    font-size: 20px;
    animation: pulse 2s infinite;
}

.whatsapp-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    opacity: 0;
    max-width: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.whatsapp-label {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 2px;
}

.whatsapp-subtitle {
    font-size: 12px;
    opacity: 0.9;
}

.whatsapp-close {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    background: #ff4757;
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 12px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.whatsapp-close:hover {
    background: #ff3742;
    transform: scale(1.1);
}

/* Estados del botón */
.whatsapp-float.expanded .whatsapp-text {
    opacity: 1;
    max-width: 200px;
}

.whatsapp-float.expanded .whatsapp-close {
    display: flex;
}

.whatsapp-float.minimized .whatsapp-btn {
    padding: 12px;
    min-width: 60px;
}

.whatsapp-float.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateX(-100px) translateY(20px);
}

/* Animaciones */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateX(-100px) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0) translateY(0);
    }
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Notificación de mensaje */
.whatsapp-notification {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: #ff4757;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: bold;
    animation: bounce 1s infinite;
}

/* Responsive */
@media (max-width: 768px) {
    .whatsapp-float {
        bottom: 20px;
        left: 20px;
    }
    
    .whatsapp-btn {
        padding: 10px 16px 10px 10px;
    }
    
    .whatsapp-icon {
        width: 32px;
        height: 32px;
        margin-right: 10px;
    }
    
    .whatsapp-icon i {
        font-size: 18px;
    }
    
    .whatsapp-label {
        font-size: 13px;
    }
    
    .whatsapp-subtitle {
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .whatsapp-float {
        bottom: 15px;
        left: 15px;
    }
    
    .whatsapp-text {
        max-width: 150px;
    }
}

/* Tema claro */
@media (prefers-color-scheme: light) {
    .whatsapp-btn {
        box-shadow: 0 8px 25px rgba(37, 211, 102, 0.25);
    }
    
    .whatsapp-btn:hover {
        box-shadow: 0 12px 35px rgba(37, 211, 102, 0.35);
    }
}

/* Accesibilidad */
@media (prefers-reduced-motion: reduce) {
    .whatsapp-float {
        animation: none;
    }
    
    .whatsapp-icon i {
        animation: none;
    }
    
    .whatsapp-notification {
        animation: none;
    }
}

/* Estados de hover mejorados */
.whatsapp-btn:focus {
    outline: 3px solid rgba(37, 211, 102, 0.3);
    outline-offset: 2px;
}

.whatsapp-btn:active {
    transform: translateY(-1px);
}