/* Estilos generales */
:root {
    --color-primary: #0a2463; /* Azul marino */
    --color-secondary: #8b0000; /* Rojo oscuro */
    --color-light: #f5f5f5;
    --color-dark: #333;
    --color-gray: #777;
    --color-white: #fff;
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
}

/* Optimizaciones de rendimiento */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Mejoras de accesibilidad */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:focus {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* Skip to main content */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px;
    z-index: 100;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-light);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Estilos de navegación */
.main-nav ul {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.main-nav ul li a {
    color: var(--color-white);
    font-weight: 500;
    transition: color 0.3s ease;
}

.main-nav ul li a:hover {
    color: var(--color-secondary);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--color-primary);
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--color-secondary);
}

.btn {
    display: inline-block;
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #6b0000; /* Rojo oscuro más oscuro */
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Header */
header {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 1.5rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: padding 0.3s ease, background 0.3s ease;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.logo img {
    max-width: 200px;
    height: auto;
    margin-bottom: 0.5rem;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
    color: var(--color-white);
}

.logo p {
    font-size: 0.9rem;
    margin: 0;
    color: var(--color-white);
}



/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(10, 36, 99, 0.8), rgba(10, 36, 99, 0.8)), url('https://images.unsplash.com/photo-1578575437130-527eed3abbec?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1470&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    color: var(--color-white);
    text-align: center;
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-logo {
    margin: 0 auto 2rem;
    display: block;
    max-width: 18%; /* PC: tamaño actual */
    height: auto;
    width: 18%;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Services Section */
.services {
    padding: 6rem 0;
    background-color: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background-color: var(--color-light);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.service-card .icon {
    font-size: 2.5rem;
    color: var(--color-secondary);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

/* About Section */
.about {
    padding: 6rem 0;
    background-color: #f9f9f9;
}

.about-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--color-gray);
}

.stats {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    margin-top: 3rem;
    text-align: center;
    gap: 2rem;
}

.stat h3 {
    font-size: 2.5rem;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

.stat p {
    color: var(--color-gray);
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background-color: var(--color-white);
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--color-secondary);
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(10, 36, 99, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Estilos para mensajes de estado del formulario */
.form-status {
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    display: none;
}

.form-status.success {
    display: block;
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-status.error {
    display: block;
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Estilos para el estado de carga */
.form-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.form-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    border: 3px solid var(--color-primary);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Validación visual de campos */
.form-group input:invalid,
.form-group textarea:invalid {
    border-color: var(--color-secondary);
}

.form-group input:valid,
.form-group textarea:valid {
    border-color: #28a745;
}

/* Estilos para dispositivos móviles */
@media screen and (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
    }

    .logo img {
        max-width: 150px;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }

    .hero-logo {
        max-width: 50%;
        width: 50%;
    }
}

@media screen and (max-width: 576px) {
    .logo img {
        max-width: 150px;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }

    .hero-logo {
        max-width: 50%;
        width: 50%;
    }
}

/* Footer */
footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 4rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo-img {
    max-width: 200px;
    height: auto;
    margin-bottom: 1rem;
}

.footer-logo h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-links h4::after,
.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--color-secondary);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-links ul li a {
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: var(--color-secondary);
}

.footer-contact p {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
}

/* Estilos del menú hamburguesa y navegación responsiva */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    position: absolute;
    right: 1rem;
    top: 1.5rem;
    z-index: 1000;
}

.menu-toggle i {
    color: var(--color-white);
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.menu-toggle[aria-expanded="true"] i {
    transform: rotate(90deg);
}

@media screen and (max-width: 768px) {
    header .container {
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem;
        position: relative;
    }

    .menu-toggle {
        display: block;
    }

    .main-nav {
        display: none;
        width: 100%;
        padding: 1rem 0;
        background: var(--color-primary);
        position: absolute;
        top: 100%;
        left: 0;
        z-index: 999;
    }

    .main-nav.show {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }

    .main-nav ul li {
        width: 100%;
        margin: 0;
    }

    .main-nav ul li a {
        display: block;
        padding: 1rem;
        color: var(--color-white);
        text-align: center;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .main-nav ul li a:hover {
        background: rgba(255, 255, 255, 0.1);
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }

    .about-content {
        flex-direction: column;
    }

    .stats {
        flex-direction: column;
        gap: 2rem;
        align-items: center;
    }

    .footer-logo-img {
        max-width: 150px;
    }
}

@media screen and (max-width: 576px) {
    .hero-content h2 {
        font-size: 1.8rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .service-card {
        padding: 1.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Optimizaciones de rendimiento para imágenes */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Optimizaciones para impresión */
@media print {
    .hero {
        background: none !important;
        color: var(--color-dark) !important;
    }
    
    .btn,
    .contact-form,
    nav {
        display: none !important;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
    }
    
    body {
        font-size: 12pt;
    }
}

/* Optimizaciones de rendimiento para animaciones */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

@media screen and (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-logo {
        max-width: 15%;
        width: 15%;
    }
}

@media screen and (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
    }

    .hero-logo {
        max-width: 12%;
        width: 12%;
    }
}