/* =========================================
   AGUEUS | Arquitectura y Gestión
   Hoja de estilos principal
   ========================================= */

/* Variables de diseño */
:root {
    --azul-oscuro: #0f172a;
    --azul-medio: #1e3a5f;
    --azul-acento: #3b82f6;
    --gris-claro: #f8fafc;
    --gris-texto: #475569;
    --gris-borde: #e2e8f0;
    --blanco: #ffffff;
    --fuente-principal: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Espaciados globales para un look más amplio y sobrio */
    --espacio-seccion: 8rem 5%;
    --espacio-contenedor: 1200px;
}

/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--fuente-principal);
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--blanco);
    color: var(--azul-oscuro);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* =========================================
   Navegación
   ========================================= */
header {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--gris-borde);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--azul-oscuro);
    text-decoration: none;
}

.logo span {
    font-weight: 300;
    color: var(--gris-texto);
}

nav a {
    text-decoration: none;
    color: var(--gris-texto);
    margin-left: 2.5rem;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--azul-acento);
}

/* =========================================
   Sección Hero (Imagen + Texto)
   ========================================= */
.hero {
    position: relative;
    padding: 10rem 5%;
    text-align: center;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 600px;
}

/* Imagen de fondo con desenfoque reducido */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background-image: url('fondo.jpg');
    background-size: cover;
    background-position: center;
    filter: blur(3px) brightness(0.95); /* Desenfoque sutil y brillo ajustado */
    transform: scale(1.03); /* Compensa el borde del desenfoque */
}

/* Capa de superposición para asegurar contraste */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(30, 58, 95, 0.75) 100%);
}

/* Contenido por encima de la imagen */
.hero-content {
    position: relative;
    z-index: 3;
    max-width: 850px;
    margin: 0 auto;
    color: var(--blanco);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 2rem;
    line-height: 1.15;
    font-weight: 600;
    letter-spacing: -1.5px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.hero p {
    font-size: 1.2rem;
    max-width: 750px;
    margin: 0 auto 3rem auto;
    font-weight: 300;
    line-height: 1.8;
    text-shadow: 0 1px 5px rgba(0,0,0,0.5);
}

.btn {
    display: inline-block;
    background-color: var(--azul-acento);
    color: var(--blanco);
    padding: 1rem 2.5rem;
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    transition: transform 0.2s, background-color 0.2s;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.btn:hover {
    background-color: #2563eb;
    transform: translateY(-2px);
}

/* =========================================
   Sección de Servicios
   ========================================= */
.servicios {
    padding: var(--espacio-seccion);
    background-color: var(--gris-claro);
    text-align: center;
}

.servicios h2 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    color: var(--azul-oscuro);
    font-weight: 600;
    letter-spacing: -0.5px;
}

.servicios > p {
    color: var(--gris-texto);
    margin-bottom: 5rem;
    font-size: 1.1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.grid-servicios {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    max-width: var(--espacio-contenedor);
    margin: 0 auto;
}

.card {
    background-color: var(--blanco);
    padding: 3rem 2.5rem;
    border-radius: 6px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--gris-borde);
    text-align: left;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.06);
    border-color: var(--azul-acento);
}

.card h3 {
    font-size: 1.2rem;
    margin-bottom: 1.2rem;
    color: var(--azul-oscuro);
    font-weight: 600;
}

.card p {
    color: var(--gris-texto);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* =========================================
   Sección de Contacto
   ========================================= */
.contacto {
    padding: var(--espacio-seccion);
    background-color: var(--blanco);
}

.contacto-container {
    max-width: 650px;
    margin: 0 auto;
    text-align: center;
}

.contacto h2 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    color: var(--azul-oscuro);
    font-weight: 600;
}

.contacto > p {
    color: var(--gris-texto);
    margin-bottom: 3.5rem;
    font-size: 1.1rem;
}

.form-group {
    margin-bottom: 1.8rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.6rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--azul-oscuro);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.2rem;
    border: 1px solid var(--gris-borde);
    border-radius: 4px;
    font-size: 0.95rem;
    font-family: var(--fuente-principal);
    transition: border-color 0.3s, box-shadow 0.3s;
    background-color: var(--gris-claro);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--azul-acento);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
    background-color: var(--blanco);
}

.btn-submit {
    width: 100%;
    padding: 1.1rem;
    background-color: var(--azul-oscuro);
    color: var(--blanco);
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 1rem;
    letter-spacing: 0.5px;
}

.btn-submit:hover {
    background-color: var(--azul-medio);
}

/* =========================================
   Pie de Página
   ========================================= */
footer {
    background-color: var(--azul-oscuro);
    color: var(--blanco);
    padding: 3rem 5%;
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.95;
    letter-spacing: 0.3px;
}

/* =========================================
   Responsive
   ========================================= */
@media (max-width: 768px) {
    .hero {
        padding: 7rem 5%;
        min-height: 500px;
    }
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
    
    header { 
        flex-direction: column; 
        gap: 1rem; 
        padding: 1rem 5%;
    }
    nav a { 
        margin: 0 1rem; 
        font-size: 0.9rem;
    }
    
    .grid-servicios { 
        grid-template-columns: 1fr; 
        gap: 1.5rem;
    }
    
    .servicios, .contacto {
        padding: 5rem 5%;
    }
}