@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Montserrat', sans-serif;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    height: 100vh;
    display: flex;
    align-items: center; /* Centrado vertical */
    justify-content: center; /* Centrado horizontal */
    color: white;
    text-align: center;
    overflow: hidden;
}

.container {
    padding: 20px;
    max-width: 95%;
    z-index: 1;
}

/* Estilo específico para INTEGRA BILL */
.brand-name {
    font-size: clamp(2.5rem, 10vw, 5rem);
    font-weight: 700;
    text-transform: uppercase; /* Forzar mayúsculas */
    letter-spacing: 4px;
    margin-bottom: 5px;
    /* Efecto Dorado Metálico */
    background: linear-gradient(to bottom, #cf972d 22%, #f7ef8a 45%, #b58212 50%, #f7ef8a 63%, #cf972d 86%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInDown 1s ease-out;
}

.main-title {
    font-size: clamp(1.2rem, 4vw, 2rem);
    text-transform: uppercase;
    color: #ffffff;
    opacity: 0.9;
    margin-bottom: 30px;
    letter-spacing: 2px;
    animation: fadeIn 1.5s ease-out;
}

.sub-titulo {
    font-size: clamp(1rem, 3vw, 1.5rem);
    font-weight: 400;
    color: #00d4ff;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 20px;
    display: inline-block;
    animation: fadeInUp 1.2s ease-out;
}

/* Animaciones */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.glow {
    position: absolute;
    width: 50vw;
    height: 50vw;
    background: rgba(207, 151, 45, 0.05); /* Brillo sutil dorado */
    filter: blur(100px);
    border-radius: 50%;
    z-index: 0;
}

/* Estilos del Botón de WhatsApp - Lado Derecho y Dorado */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px; /* Cambiado a la derecha */
    width: 65px;
    height: 65px;
    background-color: #25d366; /* Verde base */
    color: #cf972d; /* El icono ahora es dorado */
    border: 3px solid #cf972d; /* Borde dorado para que resalte más */
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    z-index: 999;
    transition: all 0.3s ease;
    animation: pulse-gold 2s infinite;
}

.whatsapp-btn svg {
    width: 38px;
    height: 38px;
    fill: #f7ef8a; /* Dorado claro para el icono */
}

.whatsapp-btn:hover {
    transform: scale(1.1) rotate(5deg);
    background-color: #128c7e; /* Verde más oscuro al pasar el mouse */
    border-color: #f7ef8a;
}

/* Animación de pulsación con aura dorada */
@keyframes pulse-gold {
    0% {
        box-shadow: 0 0 0 0 rgba(207, 151, 45, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(207, 151, 45, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(207, 151, 45, 0);
    }
}

/* Responsive para el botón */
@media (max-width: 768px) {
    .whatsapp-btn {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
    }
    .whatsapp-btn svg {
        width: 30px;
        height: 30px;
    }
}