/* ==========================================================================
   SODERO INGENIERÍA - Identidad Visual Industrial & Editorial Premium
   ========================================================================== */

:root {
    /* Paleta de Colores Principal */
    --color-bg-primary: #F4F3EF;       /* Fondo Marfil / Gris Mineral cálido */
    --color-bg-secondary: #EAE7E0;     /* Marfil tonal para láminas/destacados */
    --color-bg-dark: #0B1F33;          /* Azul Tinta Profundo */
    --color-bg-dark-card: #12253B;     /* Azul Tinta contenedor */
    
    /* Colores de Texto */
    --color-text-main: #1A202C;        /* Texto principal en fondo claro */
    --color-text-muted: #4A5568;       /* Texto secundario en fondo claro (alta legibilidad) */
    --color-text-dark-main: #F4F3EF;   /* Texto en fondo oscuro */
    --color-text-dark-muted: #A0AEC0;  /* Texto secundario en fondo oscuro */

    /* Colores de Acción y Acento */
    --color-action: #C76632;           /* Naranja Técnico (#C76632) */
    --color-action-hover: #A85324;     /* Naranja Técnico Hover */
    --color-accent: #C76632;           /* Naranja Técnico Acento */

    /* Líneas de Referencia y Bordes */
    --color-border: #D2D6DC;           /* Bordes nítidos para fondo claro */
    --color-border-dark: #1E2D45;      /* Bordes nítidos para fondo oscuro */

    /* Tipografías */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Estructura */
    --container-max: 1600px;
}

/* ==========================================================================
   Reset & Accesibilidad
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-primary);
    color: var(--color-text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* Accessibility Utility */
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Micro-Etiquetas Elegantes (Restringidas) */
.tech-label {
    font-family: var(--font-mono);
    font-size: 0.775rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
}

.tech-tag-dark {
    font-family: var(--font-mono);
    font-size: 0.775rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
}

/* Foco Visible */
:focus-visible {
    outline: 2px solid var(--color-action);
    outline-offset: 3px;
}

/* ==========================================================================
   Layout General & Grid
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.section-dark {
    background-color: var(--color-bg-dark);
    color: var(--color-text-dark-main);
    border-bottom: 1px solid var(--color-border-dark);
}

/* Cabecera Editorial de Sección */
.section-header-editorial {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 1rem;
}

.section-dark .section-header-editorial {
    border-bottom-color: var(--color-border-dark);
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: inherit;
}

/* ==========================================================================
   Header & Marca Corporativa (Presencia de Marca & Isotipo SVG 52px)
   ========================================================================== */
.site-header {
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4.5rem; /* 72px en móvil */
}

/* Marca Corporativa Unificada */
.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
}

.brand-isotipo {
    width: 42px; /* 42px en móvil (rango 40-44px) */
    height: 42px;
    min-width: 42px;
    display: block;
    object-fit: contain;
    flex-shrink: 0;
}

.brand-name {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--color-bg-dark); /* Azul Marino #0B1F33 */
    line-height: 1;
}

/* Navegación Desktop Compacta & Discreta */
.main-nav {
    display: none;
}

.nav-link {
    font-family: var(--font-sans);
    font-size: 0.875rem; /* 14px */
    font-weight: 500;
    color: var(--color-text-muted);
    text-decoration: none;
    padding: 0.5rem 0.85rem;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--color-action);
}

.btn-header-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-action);
    color: #FFFFFF !important;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.65rem 1.35rem;
    border: none;
    border-radius: 3px;
    text-decoration: none;
    transition: background-color 0.2s ease;
    margin-left: 0.85rem;
}

.btn-header-cta:hover {
    background-color: var(--color-action-hover);
}

/* Botón Hamburguesa */
.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 2.25rem;
    height: 2.25rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 101;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--color-bg-dark);
    transition: all 0.3s ease;
}

/* Menú Móvil */
.main-nav.mobile-active {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 5.5rem;
    left: 0;
    width: 100%;
    height: calc(100vh - 5.5rem);
    background-color: var(--color-bg-primary);
    padding: var(--spacing-md) 2rem;
    border-top: 1px solid var(--color-border);
    gap: var(--spacing-sm);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ==========================================================================
   Hero Section (Layout Editorial de Alto Nivel)
   ========================================================================== */
.hero-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-primary);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--color-bg-dark);
}

.hero-description {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 540px;
    line-height: 1.7;
    font-weight: 400;
}

.hero-cta-wrapper {
    margin-top: 0.5rem;
}

.btn-technical {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    background-color: var(--color-action);
    color: #FFFFFF;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 1rem 2.25rem;
    border: none;
    border-radius: 3px;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.btn-technical:hover {
    background-color: var(--color-action-hover);
}

.btn-full-width {
    width: 100%;
}

/* Lámina Técnica Minimalista Abstracta */
.hero-cad-wrapper {
    position: relative;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    aspect-ratio: 4 / 3;
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    box-shadow: 0 4px 20px rgba(11, 31, 51, 0.04);
}

.cad-canvas {
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(to right, rgba(11, 31, 51, 0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(11, 31, 51, 0.04) 1px, transparent 1px);
    background-size: 24px 24px;
    border: 1px dashed var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.cad-svg-placeholder {
    width: 90%;
    height: 90%;
}

/* ==========================================================================
   Servicios & Capacidades Editoriales
   ========================================================================== */
.services-editorial-grid {
    display: flex;
    flex-direction: column;
}

.service-module {
    display: grid;
    grid-template-columns: 1fr;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border-dark);
    gap: 1.25rem;
    position: relative;
    transition: background-color 0.2s ease;
}

.service-module:hover {
    background-color: rgba(255, 255, 255, 0.015);
}

.service-number {
    font-family: var(--font-mono);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
}

.service-body h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-text-dark-main);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.service-body p {
    color: var(--color-text-dark-muted);
    font-size: 1.05rem;
    line-height: 1.7;
    max-width: 720px;
}

.service-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.service-tag {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--color-border-dark);
    padding: 0.3rem 0.75rem;
    color: var(--color-text-dark-muted);
    border-radius: 3px;
}

/* ==========================================================================
   Sección Nosotros Editorial
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.about-editorial-text p {
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
    color: var(--color-text-main);
    line-height: 1.75;
}

.about-specs {
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.spec-item {
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0.6rem;
}

.spec-item:last-child {
    border-bottom: none;
}

.spec-label {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-action);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.spec-value {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--color-bg-dark);
}

/* ==========================================================================
   Formulario de Contacto
   ========================================================================== */
.section-contact {
    padding: var(--spacing-lg) 0;
}

.contact-header {
    margin-bottom: var(--spacing-md);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.contact-info-panel {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.contact-info-block {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.contact-info-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-bg-dark);
}

.contact-info-text {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.contact-form-technical {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--color-text-main);
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.85rem;
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    font-family: var(--font-sans);
    font-size: 0.975rem;
    color: var(--color-text-main);
    border-radius: 3px;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-action);
    background-color: #FFFFFF;
}

/* Mensajes de Estado */
.form-status-message {
    display: none;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    line-height: 1.5;
    padding: 0.85rem 1rem;
    border: 1px solid transparent;
    border-radius: 3px;
    margin-bottom: 0.5rem;
}

.form-status-message.success {
    display: block;
    background-color: #EEF7EE;
    border-color: #2E7D32;
    color: #1B5E20;
}

.form-status-message.error {
    display: block;
    background-color: #FDF2F2;
    border-color: #D32F2F;
    color: #C62828;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background-color: var(--color-bg-dark);
    color: var(--color-text-dark-muted);
    border-top: 1px solid var(--color-border-dark);
    padding: var(--spacing-md) 0;
    font-size: 0.85rem;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: space-between;
}

.footer-legal a {
    color: var(--color-text-dark-main);
    text-decoration: underline;
}

/* ==========================================================================
   Media Queries Desktop (Min-width: 992px)
   ========================================================================== */
@media (min-width: 992px) {
    .header-inner {
        height: 5.25rem; /* 84px - Respiración holgada en escritorio (rango 80-88px) */
    }

    .brand-logo {
        gap: 1.1rem;
    }

    .brand-isotipo {
        width: 52px; /* 52px - Tamaño destacado (rango 48-56px) */
        height: 52px;
        min-width: 52px;
    }

    .brand-name {
        font-size: 1.375rem; /* 22px - Tipografía fuerte y sobria (rango 20-24px) */
    }

    .menu-toggle {
        display: none;
    }

    .main-nav {
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 1rem;
        position: static;
        width: auto;
        height: auto;
        background-color: transparent;
        padding: 0;
        border: none;
    }

    .hero-grid {
        grid-template-columns: 1.1fr 0.9fr;
        gap: 4rem;
        align-items: center;
    }

    .hero-title {
        font-size: 3.25rem;
    }

    .hero-cad-wrapper {
        max-width: 520px;
        margin-left: auto;
    }

    .service-module {
        grid-template-columns: 70px 1fr;
        align-items: start;
    }

    .about-grid {
        grid-template-columns: 3fr 2fr;
    }

    .contact-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-inner {
        flex-direction: row;
        align-items: center;
    }
}

/* ==========================================================================
   Animaciones de Scroll (Reveal)
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Retrasos para elementos en grid (cascada) */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }