/* ============================================
   VARIABLES Y RESET
   ============================================ */

:root {
    /* Colores principales - Propuesta 3: Industrial Tech */
    --color-primary: #0B2C44;
    --color-primary-dark: #1a3a52;
    --color-primary-light: #26A69A;
    --color-secondary: #2E2E2E;
    --color-accent: #2E7D32;
    --color-text: #e0e0e0;
    --color-text-light: #a0a0a0;
    --color-bg: #0f1a24;
    --color-bg-light: #1a2a3a;
    --color-bg-dark: #0a0e1a;
    --color-bg-card: #1e2d3d;
    
    /* Colores específicos Industrial Tech */
    --color-industrial-blue: #0B2C44;
    --color-industrial-teal: #26A69A;
    
    /* Tipografía */
    --font-primary: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Transiciones */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: #e0e0e0;
    line-height: 1.6;
    background-color: var(--color-bg);
    overflow-x: hidden;
}

/* ============================================
   UTILIDADES
   ============================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   HEADER Y NAVEGACIÓN
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 26, 36, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    height: 80px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--color-text);
}

.logo {
    width: 50px;
    height: 50px;
    transition: var(--transition);
    object-fit: contain;
    display: block;
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.05em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: #e0e0e0;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: var(--spacing-xs) 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a:focus::after {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--color-primary-light);
}

.btn-contact {
    background: var(--color-primary);
    color: white !important;
    padding: var(--spacing-xs) var(--spacing-md) !important;
    border-radius: 6px;
    transition: var(--transition);
}

.btn-contact::after {
    display: none;
}

.btn-contact:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(11, 44, 68, 0.3);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: #e0e0e0;
    transition: var(--transition);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    margin-top: 80px;
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #0f1a24 0%, #1a2a3a 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, rgba(11, 44, 68, 0.4) 0%, rgba(38, 166, 154, 0.2) 100%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #c0c0c0;
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.hero-description {
    font-size: 1.125rem;
    color: #c0c0c0;
    margin-bottom: var(--spacing-md);
}

.hero-tagline {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.tagline-item {
    font-weight: 600;
    color: var(--color-primary-light);
    font-size: 1rem;
}

.tagline-separator {
    color: var(--color-text-light);
    font-weight: 300;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-visual {
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    opacity: 0.1;
    z-index: 0;
    pointer-events: none;
}

.hero-graphic {
    width: 100%;
    height: 100%;
}

/* ============================================
   BOTONES
   ============================================ */

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-family: var(--font-primary);
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(11, 44, 68, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(11, 44, 68, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--color-primary);
    border: 2px solid white;
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: var(--color-primary-light);
    color: white;
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(38, 166, 154, 0.4);
}

/* ============================================
   SERVICIOS
   ============================================ */

.services {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.service-card {
    background: var(--color-bg-card);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
    transition: var(--transition);
    border: 1px solid rgba(38, 166, 154, 0.2);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(38, 166, 154, 0.3);
    border-color: var(--color-primary-light);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: var(--spacing-sm);
}

.service-description {
    color: #c0c0c0;
    line-height: 1.7;
}

/* ============================================
   INDUSTRIAS
   ============================================ */

.industries {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

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

.industries-text p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.features-list {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
    color: #e0e0e0;
}

.check-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.industries-commitment {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary-light);
    margin-top: var(--spacing-md);
    font-style: italic;
}

.industries-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.industries-graphic {
    width: 100%;
    max-width: 500px;
    height: auto;
}

/* ============================================
   NOSOTROS / COMPROMISO
   ============================================ */

.about {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.commitments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.commitment-card {
    background: var(--color-bg-card);
    padding: var(--spacing-md);
    border-radius: 12px;
    border-left: 4px solid var(--color-primary-light);
    transition: var(--transition);
}

.commitment-card:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(11, 44, 68, 0.1);
}

.commitment-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: var(--spacing-xs);
}

.commitment-card p {
    color: #c0c0c0;
    line-height: 1.6;
}

/* ============================================
   CONTACTO
   ============================================ */

.contact {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

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

.contact-description {
    font-size: 1.125rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: #e0e0e0;
    font-size: 1.125rem;
}

.contact-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 500;
    color: #e0e0e0;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-sm);
    border: 2px solid rgba(38, 166, 154, 0.3);
    border-radius: 6px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--color-bg-card);
    color: #e0e0e0;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(38, 166, 154, 0.2);
}

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

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--color-bg-dark);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-brand .logo-text {
    color: white;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    margin-top: var(--spacing-xs);
}

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

.footer-column h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-column a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--color-bg);
        flex-direction: column;
        padding: var(--spacing-lg);
        transition: var(--transition);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    }

    .nav-menu.active {
        left: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle,
    .hero-description {
        font-size: 1.125rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

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

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

@media (max-width: 640px) {
    .hero-title {
        font-size: 1.875rem;
    }

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

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

    .btn {
        width: 100%;
        text-align: center;
    }
}

/* ============================================
   ANIMACIONES
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card,
.commitment-card {
    animation: fadeInUp 0.6s ease-out backwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }
.service-card:nth-child(5) { animation-delay: 0.5s; }
.service-card:nth-child(6) { animation-delay: 0.6s; }