/* ============================================
   HNB INGENIERÍA — ESTILOS CORPORATIVOS v2.1
   Rediseño evolutivo: misma identidad,
   mejor proporción y limpieza técnica.
   ============================================ */

/* ============================================
   VARIABLES Y CONFIGURACIÓN GLOBAL
   ============================================ */
:root {
    /* Paleta corporativa — sin cambios */
    --color-primary:        #0f172a;
    --color-secondary:      #1e293b;
    --color-accent:         #2563eb;
    --color-accent-dark:    #1e40af;
    --color-accent-light:   #3b82f6;

    --color-text-primary:   #0f172a;
    --color-text-secondary: #475569;
    --color-text-light:     #64748b;

    --color-bg:             #ffffff;
    --color-bg-alt:         #f8fafc;
    --color-bg-dark:        #f1f5f9;
    --color-border:         #e2e8f0;
    --color-border-light:   #f1f5f9;

    --color-success:        #10b981;
    --color-error:          #dc2626;

    /* Tipografía */
    --font-primary:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Roboto', 'Helvetica Neue', sans-serif;

    /* Espaciado */
    --sp-xs:  0.5rem;
    --sp-sm:  1rem;
    --sp-md:  1.5rem;
    --sp-lg:  2rem;
    --sp-xl:  3rem;
    --sp-2xl: 4rem;
    --sp-3xl: 6rem;

    /* Transiciones */
    --tr-fast:   0.15s ease;
    --tr-normal: 0.3s ease;
    --tr-slow:   0.5s ease;

    /* Sombras */
    --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
    --shadow-md:  0 4px 12px rgba(0,0,0,0.10);
    --shadow-lg:  0 10px 24px rgba(0,0,0,0.12);
    --shadow-xl:  0 20px 40px rgba(0,0,0,0.14);
    --shadow-card:0 2px 8px rgba(15,23,42,0.07), 0 1px 3px rgba(15,23,42,0.05);

    /* Radios */
    --r-sm: 4px;
    --r-md: 8px;
    --r-lg: 12px;
    --r-xl: 16px;

    /* Navbar */
    --navbar-height: 72px;
}

/* ============================================
   RESET Y BASE
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

ul, ol { list-style: none; }

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ============================================
   CONTENEDOR
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--sp-md);
}

/* ============================================
   TIPOGRAFÍA COMPARTIDA
   ============================================ */
.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-accent);
    margin-bottom: var(--sp-sm);
}

.section-title {
    font-size: clamp(1.75rem, 3.5vw, 2.25rem);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.2;
    margin-bottom: var(--sp-md);
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 700px;
}

.section-description-centered {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-header {
    text-align: center;
    margin-bottom: var(--sp-2xl);
}

/* ============================================
   BOTONES
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8125rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--r-md);
    transition: all var(--tr-normal);
    white-space: nowrap;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.btn-primary:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-secondary:hover {
    background-color: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
}

.btn-brochure {
    background-color: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}
.btn-brochure:hover {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-brochure-outline {
    background-color: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}
.btn-brochure-outline:hover {
    background-color: var(--color-accent);
    color: #fff;
}

.btn-block { width: 100%; justify-content: center; }

/* Hero-specific buttons */
.btn-hero-primary {
    background-color: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
    padding: 0.9375rem 2rem;
    font-size: 1rem;
}
.btn-hero-primary:hover {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37,99,235,0.35);
}

.btn-hero-secondary {
    background-color: rgba(255,255,255,0.12);
    color: #fff;
    border-color: rgba(255,255,255,0.5);
    padding: 0.9375rem 2rem;
    font-size: 1rem;
    backdrop-filter: blur(4px);
}
.btn-hero-secondary:hover {
    background-color: rgba(255,255,255,0.22);
    border-color: #fff;
    transform: translateY(-2px);
}

/* ============================================
   NAVEGACIÓN
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
    z-index: 1000;
    transition: box-shadow var(--tr-normal), border-color var(--tr-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    border-bottom-color: var(--color-border);
}

.nav-container {
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-lg);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    flex-shrink: 0;
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 50%;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.logo-title {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.04em;
}

.logo-subtitle {
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    letter-spacing: 0.01em;
}

/* Nav links */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 0.375rem 0.625rem;
    border-radius: var(--r-sm);
    transition: color var(--tr-fast), background var(--tr-fast);
    position: relative;
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    background-color: var(--color-bg-alt);
}

.nav-link-cta {
    background-color: var(--color-accent);
    color: #fff !important;
    padding: 0.5rem 1.125rem;
    border-radius: var(--r-md);
    margin-left: 0.25rem;
}

.nav-link-cta:hover {
    background-color: var(--color-accent-dark) !important;
    color: #fff !important;
}

/* Hamburger toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 34px;
    height: 34px;
    padding: 4px;
    border-radius: var(--r-sm);
    flex-shrink: 0;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2.5px;
    background-color: var(--color-primary);
    transition: all var(--tr-normal);
    border-radius: 2px;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--navbar-height);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    background-image: url('https://images.unsplash.com/photo-1487958449943-2429e8be8625?w=1920&q=85');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
    from { transform: scale(1); }
    to   { transform: scale(1.06); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(15,23,42,0.88) 0%,
        rgba(15,23,42,0.70) 50%,
        rgba(30,41,59,0.60) 100%
    );
}

.hero-container {
    position: relative;
    z-index: 2;
    width: 100%;
    padding-top: var(--sp-2xl);
    padding-bottom: var(--sp-2xl);
}

.hero-content {
    max-width: 720px;
    text-align: center;
    margin: 0 auto;
}

.hero-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--color-accent-light);
    margin-bottom: var(--sp-md);
    border-left: 3px solid var(--color-accent);
    padding-left: 0.75rem;
}

.hero-title {
    font-size: clamp(2.25rem, 5.5vw, 3.75rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--sp-md);
}

.title-main {
    display: block;
    color: #fff;
}

.title-sub {
    display: block;
    color: rgba(255,255,255,0.70);
    font-weight: 400;
    font-size: 0.82em;
}

.hero-description {
    font-size: 1.0625rem;
    color: rgba(255,255,255,0.75);
    line-height: 1.7;
    max-width: 580px;
    margin-bottom: var(--sp-xl);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-sm);
    margin-bottom: var(--sp-2xl);
}

/* Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--sp-lg);
    flex-wrap: wrap;
}

.stat-item {
    text-align: left;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.stat-suffix {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-accent-light);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 0.125rem;
}

.stat-label {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.55);
    margin-top: 0.125rem;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background-color: rgba(255,255,255,0.2);
    flex-shrink: 0;
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--sp-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.375rem;
    color: rgba(255,255,255,0.55);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition: color var(--tr-fast);
    z-index: 3;
    background: none;
    border: none;
}

.scroll-indicator:hover { color: rgba(255,255,255,0.9); }

.scroll-indicator i {
    font-size: 0.875rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%,100% { transform: translateY(0); }
    50%      { transform: translateY(6px); }
}

/* ============================================
   SERVICIOS
   ============================================ */
.services {
    padding: var(--sp-3xl) 0;
    background-color: var(--color-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-md);
    margin-bottom: var(--sp-xl);
}

.service-card {
    display: flex;
    flex-direction: column;
    border-radius: var(--r-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg);
    transition: transform var(--tr-normal), box-shadow var(--tr-normal);
    box-shadow: var(--shadow-card);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.service-card-image {
    height: 200px;
    background-size: cover;
    background-position: center;
    transition: transform var(--tr-slow);
}

.service-card:hover .service-card-image {
    transform: scale(1.04);
}

.service-card-body {
    padding: var(--sp-md) var(--sp-md) var(--sp-lg);
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}

.service-card-icon {
    width: 44px;
    height: 44px;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--r-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    color: var(--color-accent);
    margin-bottom: var(--sp-sm);
    transition: background var(--tr-fast), color var(--tr-fast);
    flex-shrink: 0;
}

.service-card:hover .service-card-icon {
    background-color: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.service-card-title {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.service-card-desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
    flex: 1;
    margin-bottom: var(--sp-sm);
}

.service-card-cta {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-accent);
    display: flex;
    align-items: center;
    gap: 0.375rem;
    transition: gap var(--tr-fast);
    margin-top: auto;
}

.service-card:hover .service-card-cta { gap: 0.625rem; }

/* Services CTA Banner */
.services-cta-banner {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg) var(--sp-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-lg);
    flex-wrap: wrap;
}

.services-cta-content {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-md);
}

.services-cta-content > i {
    font-size: 1.75rem;
    color: var(--color-accent);
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.services-cta-content strong {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.services-cta-content p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* ============================================
   SECCIÓN VR / VISUALIZACIÓN INMERSIVA
   ============================================ */
.vr-section {
    padding: var(--sp-3xl) 0;
    background-color: var(--color-primary);
    position: relative;
    overflow: hidden;
}

.vr-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(ellipse 700px 500px at 10% 50%, rgba(37,99,235,0.12) 0%, transparent 70%),
        radial-gradient(ellipse 500px 300px at 90% 20%, rgba(37,99,235,0.07) 0%, transparent 70%);
    pointer-events: none;
}

.vr-section .section-tag  { color: var(--color-accent-light); }
.vr-section .section-title { color: #fff; }
.vr-section .section-description { color: rgba(255,255,255,0.65); }

.vr-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--sp-2xl);
    align-items: flex-start;
    position: relative;
    z-index: 1;
}

/* VR Features */
.vr-description {
    display: flex;
    flex-direction: column;
    gap: var(--sp-lg);
}

.vr-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-md);
}

.vr-feature-icon {
    width: 44px;
    height: 44px;
    background-color: rgba(37,99,235,0.18);
    border: 1px solid rgba(37,99,235,0.35);
    border-radius: var(--r-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    color: var(--color-accent-light);
    flex-shrink: 0;
}

.vr-feature h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 0.3rem;
}

.vr-feature p {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.6;
}

/* VR Videos */
.vr-videos-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: rgba(255,255,255,0.85);
    margin-bottom: var(--sp-md);
    letter-spacing: -0.01em;
}

.vr-videos-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-md);
    margin-bottom: var(--sp-sm);
}

.vr-video-card {
    background-color: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--r-lg);
    overflow: hidden;
    transition: border-color var(--tr-normal);
}

.vr-video-card:hover {
    border-color: rgba(37,99,235,0.5);
}

.vr-video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    background-color: rgba(0,0,0,0.4);
    overflow: hidden;
}

.vr-video-wrapper iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.vr-video-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    cursor: default;
}

.vr-video-placeholder-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.625rem;
    text-align: center;
    padding: var(--sp-md);
}

.vr-video-placeholder-inner i {
    font-size: 2.5rem;
    color: rgba(255,255,255,0.25);
}

.vr-video-placeholder-inner p {
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.45);
    font-weight: 500;
}

.vr-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent-light);
    background: rgba(37,99,235,0.2);
    border: 1px solid rgba(37,99,235,0.3);
    border-radius: 100px;
    padding: 0.25rem 0.625rem;
}

.vr-video-info {
    padding: var(--sp-sm) var(--sp-md);
}

.vr-video-info h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: rgba(255,255,255,0.85);
    margin-bottom: 0.3rem;
}

.vr-video-info p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    line-height: 1.55;
}

.vr-note {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.4);
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

/* ============================================
   NOSOTROS
   ============================================ */
.about {
    padding: var(--sp-3xl) 0;
    background-color: var(--color-bg-alt);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-2xl);
    margin-bottom: var(--sp-2xl);
    align-items: start;
}

.about-content .section-title { margin-bottom: var(--sp-sm); }

.about-text {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: var(--sp-md);
}

.about-mission {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-md);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-accent);
    border-radius: var(--r-md);
    padding: var(--sp-md);
    margin-top: var(--sp-lg);
}

.about-mission-icon {
    color: var(--color-accent);
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.about-mission h3 {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.375rem;
}

.about-mission p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Valores */
.values-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--sp-lg);
    letter-spacing: -0.01em;
}

.values-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-sm);
}

.value-item {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--r-lg);
    padding: var(--sp-md);
    transition: box-shadow var(--tr-normal), transform var(--tr-normal);
}

.value-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.value-icon {
    width: 36px;
    height: 36px;
    background-color: var(--color-bg-alt);
    border-radius: var(--r-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9375rem;
    color: var(--color-accent);
    margin-bottom: 0.625rem;
}

.value-item h4 {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.3rem;
}

.value-item p {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.55;
}

/* Competencias */
.competencies {
    border-top: 1px solid var(--color-border);
    padding-top: var(--sp-2xl);
}

.competencies-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--sp-xl);
    text-align: center;
    letter-spacing: -0.01em;
}

.competencies-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-md);
}

.competency-item {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg);
    text-align: center;
    transition: transform var(--tr-normal), box-shadow var(--tr-normal);
}

.competency-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.competency-icon {
    font-size: 1.75rem;
    color: var(--color-accent);
    margin-bottom: var(--sp-sm);
}

.competency-item h4 {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.375rem;
}

.competency-item p {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.55;
}

/* ============================================
   PROYECTOS / EXPERIENCIA
   ============================================ */
.projects {
    padding: var(--sp-3xl) 0;
    background-color: var(--color-bg);
}

.sectors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-md);
    margin-bottom: var(--sp-2xl);
}

.sector-card {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg);
    transition: transform var(--tr-normal), box-shadow var(--tr-normal), border-color var(--tr-normal);
}

.sector-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.sector-icon {
    font-size: 1.75rem;
    color: var(--color-accent);
    margin-bottom: var(--sp-sm);
}

.sector-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.sector-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Capacidades */
.project-capabilities {
    background-color: var(--color-secondary);
    border-radius: var(--r-xl);
    padding: var(--sp-2xl);
}

.project-capabilities h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: var(--sp-lg);
    letter-spacing: -0.01em;
}

.capabilities-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-sm);
}

.capability-item {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
    line-height: 1.5;
}

.capability-item i {
    color: var(--color-success);
    font-size: 0.8125rem;
    margin-top: 0.2rem;
    flex-shrink: 0;
}

/* ============================================
   CONTACTO
   ============================================ */
.contact {
    padding: var(--sp-3xl) 0;
    background-color: var(--color-bg-alt);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: var(--sp-2xl);
    align-items: start;
}

.contact-info .section-title { margin-bottom: var(--sp-sm); }

.contact-intro {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--sp-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--sp-md);
    margin-bottom: var(--sp-xl);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-sm);
}

.contact-icon {
    width: 40px;
    height: 40px;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--r-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9375rem;
    color: var(--color-accent);
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.2rem;
}

.contact-text a,
.contact-text p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    display: block;
    transition: color var(--tr-fast);
}

.contact-text a:hover { color: var(--color-accent); }

.contact-brochure {
    margin-bottom: var(--sp-lg);
}

.social-links h4 {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.625rem;
}

.social-icons { display: flex; gap: 0.625rem; }

.social-icon {
    width: 38px;
    height: 38px;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--r-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--color-text-secondary);
    transition: all var(--tr-fast);
}

.social-icon:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
}

/* Formulario */
.contact-form-container {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--r-xl);
    padding: var(--sp-xl);
    box-shadow: var(--shadow-card);
}

.contact-form { display: flex; flex-direction: column; gap: var(--sp-md); }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.form-group label span {
    color: var(--color-error);
}

.form-group input,
.form-group select,
.form-group textarea {
    font-family: inherit;
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--r-md);
    padding: 0.6875rem 0.875rem;
    transition: border-color var(--tr-fast), box-shadow var(--tr-fast);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-light);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
    background-color: var(--color-bg);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2364748b' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.875rem center;
    padding-right: 2.5rem;
}

.form-group textarea { resize: vertical; min-height: 120px; }

.btn-submit { width: 100%; justify-content: center; }

.form-message {
    padding: 0.875rem 1rem;
    border-radius: var(--r-md);
    font-size: 0.9rem;
    font-weight: 500;
    display: none;
}

.form-message.success {
    background-color: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
    display: block;
}

.form-message.error {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
    display: block;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--color-primary);
    padding: var(--sp-2xl) 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.75fr 1fr 1fr 1.2fr;
    gap: var(--sp-xl);
    padding-bottom: var(--sp-2xl);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    margin-bottom: var(--sp-sm);
}

.footer-logo img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    opacity: 0.9;
    border-radius: 50%;
}

.footer-logo span {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
}

.footer-tagline {
    font-size: 0.8125rem;
    font-weight: 600;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--sp-sm);
}

.footer-description {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
    line-height: 1.65;
    margin-bottom: var(--sp-md);
}

.footer-brochure-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-accent-light);
    transition: color var(--tr-fast);
}

.footer-brochure-link:hover { color: #fff; }

.footer-links h4,
.footer-contact h4 {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(255,255,255,0.4);
    margin-bottom: var(--sp-md);
}

.footer-links ul,
.footer-contact ul {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.footer-links ul li a {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
    transition: color var(--tr-fast);
}

.footer-links ul li a:hover { color: #fff; }

.footer-contact ul li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
}

.footer-contact ul li i {
    color: var(--color-accent-light);
    font-size: 0.8125rem;
    width: 14px;
    flex-shrink: 0;
}

.footer-contact ul li a {
    color: rgba(255,255,255,0.6);
    transition: color var(--tr-fast);
}

.footer-contact ul li a:hover { color: #fff; }

.footer-bottom {
    padding: var(--sp-md) 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-md);
    flex-wrap: wrap;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.35);
}

.footer-legal {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.25) !important;
}

/* ============================================
   PÁGINAS DE SERVICIOS
   ============================================ */
.service-hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: flex-end;
    padding-bottom: var(--sp-2xl);
    padding-top: var(--navbar-height);
    overflow: hidden;
}

.service-hero-background {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}

.service-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15,23,42,0.92) 0%, rgba(15,23,42,0.55) 60%, rgba(15,23,42,0.3) 100%);
}

.service-hero-container { position: relative; z-index: 2; }

.service-hero-content { max-width: 720px; }

.service-icon-large {
    width: 60px;
    height: 60px;
    background-color: rgba(37,99,235,0.2);
    border: 2px solid rgba(37,99,235,0.5);
    border-radius: var(--r-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-accent-light);
    margin-bottom: var(--sp-md);
}

.service-hero-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.02em;
    margin-bottom: var(--sp-sm);
}

.service-hero-description {
    font-size: 1.0625rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    max-width: 560px;
}

/* Service detail */
.service-detail {
    padding: var(--sp-3xl) 0;
    background-color: var(--color-bg);
}

.service-detail-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--sp-2xl);
    align-items: start;
}

.service-main-content .section-title { margin-bottom: var(--sp-lg); }

.service-intro {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: var(--sp-xl);
    border-left: 3px solid var(--color-accent);
    padding-left: var(--sp-md);
}

.service-features-detailed,
.service-software,
.service-norms {
    margin-bottom: var(--sp-xl);
}

.service-features-detailed h3,
.service-software h3,
.service-norms h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--sp-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.service-features-detailed h3 i,
.service-software h3 i,
.service-norms h3 i {
    color: var(--color-accent);
    font-size: 0.9375rem;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: var(--sp-sm);
}

.features-list li {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
    padding: var(--sp-sm) var(--sp-md);
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--r-md);
}

.software-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-sm);
}

.software-item {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--r-md);
    padding: var(--sp-sm) var(--sp-md);
}

.software-item strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.software-item p {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.norms-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.norms-list li {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    padding: 0.5rem 0.75rem;
    background: var(--color-bg-alt);
    border-radius: var(--r-sm);
    border-left: 2px solid var(--color-accent);
}

/* Sidebar */
.service-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--sp-md);
    position: sticky;
    top: calc(var(--navbar-height) + var(--sp-lg));
}

.sidebar-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg);
}

.sidebar-card h4 {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-card h4 i { color: var(--color-accent); }

.sidebar-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--sp-md);
}

.services-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.services-links li a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-accent);
    font-weight: 500;
    transition: color var(--tr-fast);
}

.services-links li a::before {
    content: '→';
    font-size: 0.8125rem;
}

.services-links li a:hover { color: var(--color-accent-dark); }

/* ============================================
   RESPONSIVE — TABLET  (≤ 1024px)
   ============================================ */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .competencies-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .sectors-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--sp-lg);
    }

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

    .vr-description {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        gap: var(--sp-md);
    }

    .service-detail-grid {
        grid-template-columns: 1fr 280px;
        gap: var(--sp-xl);
    }
}

/* ============================================
   RESPONSIVE — MOBILE  (≤ 768px)
   ============================================ */
@media (max-width: 768px) {

    :root { --navbar-height: 64px; }

    /* Navbar */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background-color: var(--color-bg);
        flex-direction: column;
        align-items: stretch;
        padding: var(--sp-md);
        gap: 0.25rem;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        opacity: 0;
        transition: transform var(--tr-normal), opacity var(--tr-normal);
        pointer-events: none;
        z-index: 999;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-link {
        padding: 0.75rem 1rem;
        border-radius: var(--r-md);
        text-align: left;
    }

    .nav-link-cta {
        margin: var(--sp-xs) 0 0;
        text-align: center;
        justify-content: center;
    }

    /* Hero */
    .hero-title {
        font-size: clamp(1.875rem, 7vw, 2.5rem);
    }

    .hero-stats {
        gap: var(--sp-md);
    }

    .stat-number { font-size: 1.625rem; }

    /* Servicios */
    .services-grid {
        grid-template-columns: 1fr;
    }

    .service-card-image { height: 180px; }

    .services-cta-banner {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--sp-md);
    }

    /* VR */
    .vr-videos-grid {
        grid-template-columns: 1fr;
    }

    .vr-description {
        grid-template-columns: 1fr;
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
    }

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

    /* Competencies */
    .competencies-grid {
        grid-template-columns: 1fr;
    }

    /* Sectors */
    .sectors-grid {
        grid-template-columns: 1fr 1fr;
    }

    /* Capacidades */
    .capabilities-list {
        grid-template-columns: 1fr;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form-container {
        padding: var(--sp-md);
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--sp-lg);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    /* Service pages */
    .service-detail-grid {
        grid-template-columns: 1fr;
    }

    .service-sidebar {
        position: static;
    }

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

/* ============================================
   RESPONSIVE — SMALL MOBILE  (≤ 480px)
   ============================================ */
@media (max-width: 480px) {
    .sectors-grid {
        grid-template-columns: 1fr;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn-hero-primary,
    .btn-hero-secondary {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        flex-wrap: wrap;
    }

    .stat-divider { display: none; }
}

/* ============================================
   ANIMACIONES SCROLL-REVEAL
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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