/**
 * ==========================================
 * slider-principal.css - DPI del Perú
 * Estilos del slider principal
 * IMPLEMENTADO: Transición fade (fundido cruzado) para slides
 * ==========================================
 */

.principal-section {
    height: 100vh;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: #000000;
}

/* Contenedor del slider */
.slider-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* TRANSICIÓN FADE PARA SLIDES - FUNDIDO CRUZADO SUAVE */
.slider-container *,
.slider-container *::before,
.slider-container *::after {
    /* Mantener transiciones específicas para el fade */
    transition: none;
    -webkit-transition: none;
    -moz-transition: none;
    -ms-transition: none;
    -o-transition: none;
}

/* EXCEPCIÓN: Transición fade para slides */
.slide {
    transition: opacity 0.8s ease !important;
    -webkit-transition: opacity 0.8s ease !important;
    -moz-transition: opacity 0.8s ease !important;
    -ms-transition: opacity 0.8s ease !important;
    -o-transition: opacity 0.8s ease !important;
}

/* EXCEPCIÓN: Mantener solo la transición de zoom para imágenes de fondo */
.slide-bg {
    transition: transform 8s ease-in-out !important;
    -webkit-transition: transform 8s ease-in-out !important;
    -moz-transition: transform 8s ease-in-out !important;
    -ms-transition: transform 8s ease-in-out !important;
    -o-transition: transform 8s ease-in-out !important;
}

/* Slides individuales */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    z-index: 1;
}

.slide.active {
    opacity: 1;
    z-index: 2;
}

/* Video del principal */
.principal-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    /* Transición fade para videos */
    transition: opacity 0.8s ease !important;
    -webkit-transition: opacity 0.8s ease !important;
    -moz-transition: opacity 0.8s ease !important;
    -ms-transition: opacity 0.8s ease !important;
    -o-transition: opacity 0.8s ease !important;
}

/* Imágenes de fondo de los slides */
.slide-bg {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    transition: transform 8s ease-in-out;
    transform: scale(1);
}

/* Efecto de zoom in/out para imágenes de fondo */
.slide.active .slide-bg {
    animation: zoomIn 8s ease-in-out forwards;
    will-change: transform;
}

/* Efecto de zoom in/out para slides con solo imágenes */
.slide-con-imagen .slide-bg {
    will-change: transform;
}

/* Efecto de zoom in/out para slides con vídeos (deshabilitado) */
.slide-con-video .slide-bg {
    animation: none !important;
    transform: scale(1) !important;
}

/* TRANSICIÓN FADE PARA VÍDEOS - FUNDIDO CRUZADO SUAVE */
.slide:not(.active) .principal-video {
    opacity: 0 !important;
    visibility: hidden !important;
    transition: opacity 0.8s ease, visibility 0.8s ease !important;
    -webkit-transition: opacity 0.8s ease, visibility 0.8s ease !important;
    -moz-transition: opacity 0.8s ease, visibility 0.8s ease !important;
    -ms-transition: opacity 0.8s ease, visibility 0.8s ease !important;
    -o-transition: opacity 0.8s ease, visibility 0.8s ease !important;
}

/* Mostrar solo el vídeo del slide activo */
.slide.active .principal-video {
    opacity: 1 !important;
    visibility: visible !important;
    transition: opacity 0.8s ease, visibility 0.8s ease !important;
    -webkit-transition: opacity 0.8s ease, visibility 0.8s ease !important;
    -moz-transition: opacity 0.8s ease, visibility 0.8s ease !important;
    -ms-transition: opacity 0.8s ease, visibility 0.8s ease !important;
    -o-transition: opacity 0.8s ease, visibility 0.8s ease !important;
}

/* Animación de zoom in (solo acercamiento) - ZOOM MÁS NOTORIO */
@keyframes zoomIn {
    0% {
        transform: scale(1);
    }
    100% {
        transform: scale(1.25);
    }
}

/* Variante para dispositivos móviles - ZOOM MÁS NOTORIO */
@media (max-width: 768px) {
    .slide.active .slide-bg {
        animation: zoomInMobile 8s ease-in-out forwards;
    }
    
    @keyframes zoomInMobile {
        0% {
            transform: scale(1);
        }
        100% {
            transform: scale(1.15);
        }
    }
}

/* Variante para dispositivos muy pequeños - ZOOM EXTRA NOTORIO */
@media (max-width: 480px) {
    .slide.active .slide-bg {
        animation: zoomInMobileSmall 8s ease-in-out forwards;
    }
    
    @keyframes zoomInMobileSmall {
        0% {
            transform: scale(1);
        }
        100% {
            transform: scale(1.4);
        }
    }
}

/* Optimizaciones para navegadores que soportan prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .slide.active .slide-bg {
        animation: none;
        transform: scale(1);
    }
}

/* Overlay para mejorar legibilidad del texto */
.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.15), rgba(0, 0, 0, 0.15));
    z-index: 3;
}

/* Contenido principal del principal */
.principal-content {
    display: flex;
    text-align: center;
    flex-direction: column;
    align-items: center;
    position: relative;
    color: var(--primary-white);
    z-index: 10;
    max-width: 100vh;
    margin-bottom: 15vh;
}

/* Animaciones */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(3.5vh);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.principal-title {
    font-size: 4vh;
    font-weight: 700;
    margin-bottom: 25vh;
    text-shadow: 0.4vh 0.4vh 0.7vh rgba(0, 0, 0, 0.5);
    line-height: 1.2;
    opacity: 0;
    display: none; /* Ocultar todos los títulos por defecto */
}

.principal-title.active {
    display: block; /* Mostrar solo el título activo */
    animation: fadeInUp 1s ease forwards;
    animation-delay: 0.5s;
}

/* Botones CTA del carousel */
.cta-button {
    display: none; /* Ocultar todos los botones por defecto */
    opacity: 0;
    transform: translateY(3.5vh);
    transition: opacity 1s ease, transform 1s ease;
    animation-delay: 0.5s;
}

.cta-button.active {
    display: block; /* Mostrar solo el botón activo */
    opacity: 1;
    transform: translateY(0);
    animation: fadeInUp 1s ease forwards;
}

/* Indicadores del carousel */
.principal-indicators {
    position: absolute;
    bottom: 5vh;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1.5vh;
    z-index: 10;
}

.indicator {
    width: 1vh;
    height: 1vh;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: var(--primary-white);
    transform: scale(1.2);
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.8);
}

@media (max-width: 768px) {
    .principal-title {
        width: 80%;
    }
}
    
@media (max-width: 576px) {
    .principal-content {
        margin-bottom: 25vh;
    }
}

@media (max-width: 480px) {
    .principal-title {
        font-size: 3vh;
        margin-bottom: 16vh;
    }

    .principal-indicators {
        bottom: 15vh;
    }
}