/* ============================================================= */
/* 0. VARIABLES Y RESET */
/* ============================================================= */
:root {
    /* Colores Basados en Ludav */
    --color-primario: #007BFF; /* Azul Corporativo - Botones, Titulares */
    --color-secundario: #00C896; /* Verde/Cyan de Acento - Hover, Iconos */
    --color-texto: #333333;
    --color-fondo: #FFFFFF;
    --color-fondo-seccion: #F8F8F8;
    --color-dark: #1f1f1f; /* Para footer y fondos oscuros */
    
    /* Tipografía y UI/UX */
    --font-principal: 'Poppins', sans-serif;
    --transicion-base: 0.3s ease-in-out;
    --sombra-card: 0 4px 15px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: var(--font-principal);
    color: var(--color-texto);
    background-color: var(--color-fondo);
    line-height: 1.6;
    overflow-x: hidden; /* Previene scroll horizontal */
}

h1, h2, h3 { font-weight: 600; line-height: 1.2; }

section {
    padding: 80px 5%; /* Padding de sección estándar */
    overflow: hidden; /* Para animaciones */
}

/* ============================================================= */
/* 1. BOTONES Y UTILIDADES (UI/UX) */
/* ============================================================= */

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transicion-base);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 1rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    background-color: var(--color-primario);
    color: var(--color-fondo);
    border: 2px solid var(--color-primario);
}
.btn-primary:hover {
    background-color: transparent;
    color: var(--color-primario);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background-color: var(--color-secundario);
    color: var(--color-fondo);
    border: 2px solid var(--color-secundario);
}
.btn-secondary:hover {
    background-color: transparent;
    color: var(--color-secundario);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

/* ============================================================= */
/* 2. HEADER Y NAVEGACIÓN (RESPONSIVO Y FIJO) */
/* ============================================================= */

.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    background-color: var(--color-fondo);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: sticky; 
    top: 0;
    z-index: 1000;
}

.logo img {
    height: 40px; 
    width: auto;
}

/* Menú en escritorio */
.nav-menu {
    display: flex;
    align-items: center;
}
.nav-menu a {
    text-decoration: none;
    color: var(--color-texto);
    margin-left: 25px;
    font-weight: 400;
    transition: color var(--transicion-base);
}
.nav-menu a:not(.btn-cta-nav):hover {
    color: var(--color-secundario);
}
.menu-toggle { display: none; } /* Oculto en escritorio */

/* ============================================================= */
/* 3. SECCIÓN HERO (VISTA PC: DRAMÁTICA Y MODERNA) */
/* ============================================================= */

.hero-section {
    display: flex;
    align-items: center;
    height: 85vh; /* Alto impacto visual */
    position: relative;
    padding: 0; 
    overflow: hidden;
    background-color: var(--color-dark); 
}

.hero-image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: 1;
    opacity: 0.85; /* Sutil opacidad para destacar el texto */
    position: absolute;
    filter: brightness(0.9);
    transition: transform 0.5s ease;
}

.hero-content {
    position: relative;
    z-index: 5;
    max-width: 1200px; 
    margin: 0 auto;
    padding: 0 5%;
    width: 50%; /* Ocupa mitad del ancho sobre la imagen */
    padding-right: 40px; 
    opacity: 0;
    transform: translateX(-20px);
    animation: fadeInSlide 1s forwards 0.5s;
}

.hero-content h1 {
    font-size: 3.5em; 
    margin-bottom: 20px;
    color: var(--color-fondo); /* Texto blanco para contraste */
    line-height: 1.1;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.4); 
}
.hero-content p {
    color: var(--color-fondo);
    font-size: 1.2em;
    margin-bottom: 30px;
}

@keyframes fadeInSlide {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================================= */
/* 4. PROPUESTA DE VALOR (VISTA PC: TARJETAS ELEGANTES) */
/* ============================================================= */

.value-proposition {
    display: flex;
    justify-content: center;
    padding: 60px 5%;
    background-color: var(--color-fondo-seccion);
}

.value-item {
    text-align: center;
    flex-basis: 30%;
    margin: 0 15px; 
    padding: 40px 20px;
    background-color: var(--color-fondo);
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1); 
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.value-item:hover {
    transform: translateY(-10px); /* Efecto flotante */
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.value-item span {
    font-size: 3.5em; 
    color: var(--color-primario);
    margin-bottom: 15px;
    display: block;
}
.value-item h3 {
    margin-bottom: 10px;
    font-size: 1.3em;
}

/* ============================================================= */
/* 5. PORTAFOLIO Y SERVICIOS GRID (PC) */
/* ============================================================= */

.featured-portfolio, .service-list, .full-portfolio-grid {
    text-align: center;
}

.featured-portfolio h2, .service-list h2, .service-list h3 {
    font-size: 2.2em;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 10px;
}
.featured-portfolio h2::after, .service-list h2::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background-color: var(--color-primario);
    margin: 10px auto 0;
}

/* GRILLAS PRINCIPALES */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px; 
    margin-bottom: 50px;
}
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 20px;
    margin-bottom: 60px;
}

/* TARJETAS DE PORTAFOLIO (GALERÍA MODERNA) */
.portfolio-card, .portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    text-align: left;
    display: block; /* Asegura que el <a> o <div> sea un bloque completo */
    text-decoration: none;
}
.portfolio-card:hover, .portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.portfolio-card img, .portfolio-item img {
    width: 100%;
    height: 300px; /* Imágenes más altas para elegancia */
    object-fit: cover;
    display: block;
    filter: brightness(0.9); /* Sutilmente oscurecida */
    transition: all 0.5s ease;
}

.portfolio-card:hover img, .portfolio-item:hover img {
    transform: scale(1.05);
    filter: brightness(1); /* Aclara en hover */
}

.card-info, .item-details {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0)); /* Degradado elegante */
    color: var(--color-fondo);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    opacity: 0; /* Oculto inicialmente */
    transition: opacity 0.4s ease;
}
.portfolio-card:hover .card-info, .portfolio-item:hover .item-details {
    opacity: 1; 
}

.card-info h4, .item-details h3 {
    color: var(--color-secundario);
    font-size: 1.3em;
    margin-bottom: 5px;
}
.card-info p, .item-details p {
    font-size: 0.9em;
}

/* TARJETAS DE SERVICIO */
.service-card {
    background-color: var(--color-fondo);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}
.service-card:hover {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    border-left: 5px solid var(--color-secundario); /* Acento visual en hover */
}
.service-card span {
    font-size: 3em;
    color: var(--color-primario);
    margin-bottom: 15px;
    display: block;
}
.service-card h4 {
    font-size: 1.2em;
    margin-bottom: 10px;
}


/* ESTILOS DE PÁGINAS INTERNAS */
.page-title-hero {
    height: 40vh;
    background-size: cover;
    background-position: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--color-fondo);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.6);
}
.page-title-hero h1 {
    font-size: 3em;
}
.page-title-hero p {
    font-size: 1.1em;
}


/* FILTROS DEL PORTAFOLIO */
.portfolio-filters {
    padding: 30px 5%;
    background-color: var(--color-fondo-seccion);
    text-align: center;
    border-bottom: 1px solid #e0e0e0;
}
.filter-btn {
    background: transparent;
    border: none;
    color: var(--color-texto);
    padding: 10px 20px;
    margin: 0 10px;
    cursor: pointer;
    font-weight: 600;
    transition: color 0.3s, border-bottom 0.3s;
    text-transform: uppercase;
}
.filter-btn:hover, .filter-btn.active {
    color: var(--color-primario);
    border-bottom: 3px solid var(--color-primario);
}
.full-portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    padding: 60px 5%;
}

/* ============================================================= */
/* 6. FOOTER */
/* ============================================================= */

.main-footer {
    padding: 30px 5%;
    background-color: var(--color-dark);
    color: var(--color-fondo);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9em;
}

.social-links a {
    color: var(--color-fondo);
    margin-left: 15px;
    font-size: 1.5em;
    transition: color var(--transicion-base);
}
.social-links a:hover {
    color: var(--color-secundario);
}

/* ============================================================= */
/* 7. ANIMACIONES (Clases de apoyo para JS) */
/* ============================================================= */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}


/* ============================================================= */
/* 8. MEDIAS QUERIES (RESPONSIVO MÓVIL) */
/* ============================================================= */

/* TABLET (Max-width: 900px) */
@media (max-width: 900px) {
    
    .hero-content h1 { font-size: 2.5em; }

    /* Grillas a 2 columnas en Tablet */
    .portfolio-grid, .service-grid, .full-portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

/* MÓVIL (Max-width: 600px) */
@media (max-width: 600px) {
    
    section { padding: 40px 5%; } /* Menos padding en móvil */

    /* Menú Hamburguesa */
    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: 70%;
        height: 100vh;
        flex-direction: column;
        background-color: var(--color-dark);
        padding-top: 80px;
        transform: translateX(100%); 
        transition: transform 0.4s ease-in-out;
    }
    .nav-menu.open { transform: translateX(0); }
    .nav-menu a { margin: 15px 0; color: var(--color-fondo); font-size: 1.1rem; }
    
    .menu-toggle {
        display: block; 
        font-size: 2em;
        cursor: pointer;
        z-index: 1001;
    }
    .menu-toggle.open { color: var(--color-secundario); }
    
    /* Hero en Móvil */
    .hero-section {
        flex-direction: column;
        height: auto;
        min-height: 80vh;
    }
    .hero-image {
        position: relative;
        width: 100%;
        height: 300px;
        order: 1;
    }
    .hero-content {
        width: 100%;
        padding: 40px 0;
        order: 2; 
        text-align: center;
        color: var(--color-texto);
    }
    .hero-content h1 {
        font-size: 2em;
        color: var(--color-texto);
        text-shadow: none;
    }
    .hero-content p {
        color: var(--color-texto);
    }
    .hero-section { background-color: var(--color-fondo-seccion); }


    /* Columnas Únicas para Grillas */
    .value-proposition, .portfolio-grid, .service-grid, .full-portfolio-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    /* Footer en Móvil */
    .main-footer {
        flex-direction: column;
        text-align: center;
    }
    .social-links { margin-top: 15px; }
    
    /* Ajuste para tarjetas de Portafolio en móvil (menos altura) */
    .portfolio-card img, .portfolio-item img {
        height: 200px; 
    }
    
    /* Filtros en móvil (centrados) */
    .portfolio-filters {
        display: flex;
        overflow-x: auto; /* Permite scroll horizontal si hay muchos botones */
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch; /* Suaviza el scroll en iOS */
        padding-left: 0;
        padding-right: 0;
    }
    .filter-btn {
        flex-shrink: 0; /* Evita que los botones se encojan */
        margin: 0 8px;
    }
}