/* ============================================
   SERVICIOS Y SOLUCIONES – HOJA DE ESTILOS
   Ingeniería Civil · Diseño moderno responsive
   Paleta: gris · blanco · verde
   ============================================ */

/* --- Importación de tipografía moderna --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- Variables de color y estilos globales --- */
:root {
	    /* Verdes */
    --verde-oscuro: #065f46;
    --verde-medio: #047857;
    --verde-principal: #059669;
    --verde-claro: #10b981;
    --verde-muy-claro: #d1fae5;

    /* Grises */
    --gris-100: #f8fafc;
    --gris-200: #e2e8f0;
    --gris-300: #cbd5e1;
    --gris-500: #64748b;
    --gris-700: #334155;
    --gris-900: #0f172a;

    /* Blanco y sombras */
    --blanco: #ffffff;
    --sombra-suave: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --sombra-media: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --sombra-fuerte: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Radios */
    --radio-sm: 6px;
    --radio-md: 10px;
    --radio-lg: 16px;

    /* Transiciones */
    --transicion: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reseteo básico --- */
*,
*::before,
*::after {
	    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
	    scroll-behavior: smooth;
}

body {
	    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: var(--gris-700);
    background-color: var(--gris-100);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Compensación de scroll para que la barra fija no tape los títulos */
section {
	    scroll-margin-top: 80px;
}

/* ============================================
   BARRA DE NAVEGACIÓN (ESCRITORIO PRIMERO)
   ============================================ */
.navbar {
	    background-color: var(--blanco); /* Fondo 100% sólido para evitar manchas */
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 0 1rem;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.navbar-container {
	    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 70px;
}

/* Logo */
.logo img {
	    display: block;
    max-height: 60px;
    width: auto;
    transition: transform 0.3s ease;
}

.logo:hover img {
	    transform: scale(1.05);
}

/* Checkbox oculto */
.menu-toggle {
	    display: none;
}

/* Botón hamburguesa: OCULTO EN ESCRITORIO */
.menu-icon {
	    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 48px;
    height: 48px;
    cursor: pointer;
    border-radius: 8px;
    transition: background-color 0.25s ease;
}

.menu-icon span {
	    display: block;
    width: 26px;
    height: 3px;
    background-color: #1f2937;
    margin: 3px 0;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.menu-icon:hover {
	    background-color: rgba(16, 185, 129, 0.15);
}

/* Menú horizontal visible por defecto en Escritorio */
.navbar nav {
	    display: block;
}

.navbar nav ul {
	    display: flex;
    justify-content: center;
    align-items: center;
    list-style: none;
    gap: 0.25rem;
}

.navbar nav a {
	    display: block;
    padding: 0.75rem 1.25rem;
    color: #334155;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.01em;
    border-radius: 6px;
    transition: all 0.25s ease;
    position: relative;
}

.navbar nav a::after {
	    content: '';
    position: absolute;
    bottom: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: #059669;
    transition: width 0.25s ease;
}

.navbar nav a:hover {
	    color: #059669;
    background-color: rgba(16, 185, 129, 0.1);
}

.navbar nav a:hover::after {
	    width: 40%;
}

/* ============================================
   SECCIÓN HERO / INICIO
   ============================================ */
.hero {
	    background: linear-gradient(135deg, var(--gris-900) 0%, var(--verde-oscuro) 100%);
    color: var(--blanco);
    text-align: center;
    padding: 6rem 1.5rem 5rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
	    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(45deg, rgba(255,255,255,0.03) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,0.03) 25%, transparent 25%);
    background-size: 40px 40px;
    pointer-events: none;
}

.hero h1 {
	    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero h1::after {
	    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--verde-claro);
    margin: 1.5rem auto 0;
    border-radius: 2px;
}

/* ============================================
   SECCIONES GENERALES
   ============================================ */
section {
	    max-width: 1100px;
    margin: 0 auto;
    padding: 4rem 1.5rem;
}

section h2 {
	    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--gris-900);
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
    position: relative;
    padding-bottom: 0.75rem;
}

section h2::after {
	    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--verde-principal);
    border-radius: 2px;
}

section p {
	    margin-bottom: 1.2rem;
    color: var(--gris-500);
    font-size: 1.05rem;
}

/* ============================================
   SECCIÓN QUIÉNES SOMOS
   ============================================ */
.seccion-bienvenida {
	    background-color: var(--blanco);
    border-radius: var(--radio-lg);
    box-shadow: var(--sombra-media);
    margin-top: 0; /* Ajustado para eliminar encimamiento */
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
    padding: 3rem 2.5rem;
}

.seccion-bienvenida p:last-child {
	    margin-bottom: 0;
}

/* ============================================
   SECCIÓN EXPERIENCIAS
   ============================================ */
.seccion-experiencia {
	    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding-top: 2rem;
}

.seccion-experiencia h2 {
	    grid-column: 1 / -1;
}

.bloque-experiencia {
	    background-color: var(--blanco);
    padding: 2rem;
    border-radius: var(--radio-md);
    border: 1px solid var(--gris-200);
    border-left: 5px solid var(--verde-principal);
    box-shadow: var(--sombra-suave);
    transition: all var(--transicion);
}

.bloque-experiencia:hover {
	    transform: translateY(-5px);
    box-shadow: var(--sombra-fuerte);
    border-left-color: var(--verde-claro);
}

.bloque-experiencia h3 {
	    color: var(--gris-900);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.bloque-experiencia p {
	    font-size: 0.95rem;
    margin-bottom: 0;
}

/* ============================================
   SECCIÓN CONTACTO
   ============================================ */
.seccion-contacto {
	    margin-bottom: 2rem;
}

.datos-contacto {
	    background-color: var(--blanco);
    padding: 2.5rem;
    border-radius: var(--radio-lg);
    box-shadow: var(--sombra-media);
    border: 1px solid var(--gris-200);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.datos-contacto p {
	    margin-bottom: 0;
    padding: 1rem;
    background-color: var(--gris-100);
    border-radius: var(--radio-sm);
    border-left: 3px solid var(--verde-claro);
    transition: background-color var(--transicion);
}

.datos-contacto p:hover {
	    background-color: var(--verde-muy-claro);
}

.datos-contacto strong {
	    display: block;
    color: var(--gris-900);
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   PIE DE PÁGINA
   ============================================ */
footer {
	    background-color: var(--gris-900);
    color: var(--gris-300);
    text-align: center;
    padding: 2.5rem 1.5rem;
    font-size: 0.9rem;
    border-top: 4px solid var(--verde-principal);
}

footer p {
	    margin-bottom: 0.5rem;
}

footer a {
	    color: var(--verde-claro);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transicion);
}

footer a:hover {
	    color: var(--blanco);
    text-decoration: underline;
}

/* ============================================
   COMPORTAMIENTO RESPONSIVE (MÓVIL Y TABLET)
   ============================================ */
@media (max-width: 768px) {
	    .navbar-container {
	        flex-wrap: wrap;
    }

    /* Mostrar botón hamburguesa solo en pantallas pequeñas */
    .menu-icon {
	        display: flex;
    }

    /* Ocultar menú por defecto en móvil */
    .navbar nav {
	        display: none;
        width: 100%;
        order: 3;
    }

    /* Mostrar menú al activar el checkbox */
    .menu-toggle:checked ~ nav {
	        display: block;
    }

    .navbar nav ul {
	        flex-direction: column;
        align-items: stretch;
        padding: 0.5rem 0 1rem;
        gap: 0.15rem;
    }

    .navbar nav a {
	        text-align: center;
        padding: 0.75rem 1rem;
    }

    .navbar nav a::after {
	        bottom: 0.4rem;
    }

    /* Animación de 3 rayas a X */
    .menu-toggle:checked ~ .menu-icon span:nth-child(1) {
	        transform: translateY(9px) rotate(45deg);
    }
    .menu-toggle:checked ~ .menu-icon span:nth-child(2) {
	        opacity: 0;
    }
    .menu-toggle:checked ~ .menu-icon span:nth-child(3) {
	        transform: translateY(-9px) rotate(-45deg);
    }

    .hero {
	        padding: 4rem 1.5rem 3rem;
    }

    .seccion-bienvenida {
	        padding: 2rem 1.5rem;
    }

    section {
	        padding: 3rem 1rem;
    }

    .seccion-experiencia {
	        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .datos-contacto {
	        grid-template-columns: 1fr;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
	    .logo img {
	        max-height: 45px;
    }

    .hero h1 {
	        font-size: 1.8rem;
    }

    section h2 {
	        font-size: 1.5rem;
    }

    .bloque-experiencia {
	        padding: 1.25rem;
    }

    .datos-contacto p {
	        font-size: 0.9rem;
        padding: 0.75rem;
    }
}