/* ============================================
   POLIUREX INDUSTRIAL - Landing Page Styles
   Sistema de diseño técnico e industrial
   ============================================ */

/* === RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colores principales */
    --primary-blue: #1a4d7a;
    --primary-orange: #f59e0b;
    --graphite: #374151;
    --dark-bg: #1f2937;
    --light-gray: #f3f4f6;
    --white: #ffffff;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-light: #e5e7eb;

    /* Gradientes */
    --gradient-overlay: linear-gradient(135deg, rgba(26, 77, 122, 0.9) 0%, rgba(31, 41, 55, 0.85) 100%);

    /* Tipografía */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

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

    /* Efectos */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

/* === TIPOGRAFÍA === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 1.125rem;
}

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

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
}

/* === BOTONES === */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-orange);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: #d97706;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary-blue);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

.btn:disabled,
button:disabled {
    opacity: 0.7;
    cursor: wait;
    pointer-events: none;
}

/* === HERO SECTION === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-overlay);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    max-width: 900px;
    padding: 0 var(--spacing-md);
}

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

.hero-logo {
    width: 300px;
    height: auto;
    max-width: 90%;
    margin-bottom: 0.5rem;
    position: relative;
    top: -4rem;
    object-fit: contain;
    filter: drop-shadow(0 0 10px rgba(0, 0, 0, 0.3));
    transition: var(--transition);
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.hero-logo:hover {
    transform: scale(1.02);
}

.hero h1 {
    color: var(--white);
    margin-bottom: 1rem;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.5);
    line-height: 1.1;
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    position: relative;
    top: -3rem;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--light-gray);
    margin-bottom: 2rem;
    font-weight: 400;
    line-height: 1.4;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    top: -2rem;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    top: -1rem;
}

/* === PROPUESTA DE VALOR === */
.value-prop {
    background-color: var(--white);
    text-align: center;
    position: relative;
    z-index: 10;
}

.value-prop h2 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.value-intro {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

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

.benefit-card {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: 12px;
    border: 2px solid var(--border-light);
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-orange);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.benefit-card h3 {
    color: var(--primary-blue);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.benefit-card p {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* === PROBLEMA / EDUCACIÓN === */
.problem-section {
    background: linear-gradient(135deg, var(--graphite) 0%, var(--dark-bg) 100%);
    color: var(--white);
}

.problem-section h2 {
    color: var(--white);
}

.problem-list {
    list-style: none;
    max-width: 800px;
    margin: var(--spacing-lg) auto 0;
}

.problem-list li {
    padding: var(--spacing-sm) 0 var(--spacing-sm) 3rem;
    position: relative;
    font-size: 1.125rem;
    color: var(--light-gray);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.problem-list li:before {
    content: "⚠";
    position: absolute;
    left: 0;
    color: var(--primary-orange);
    font-size: 1.5rem;
}

/* === BENEFICIOS TÉCNICOS === */
.technical-benefits {
    background-color: var(--light-gray);
}

.technical-benefits h2 {
    text-align: center;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.tech-card {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--primary-orange);
    transition: var(--transition);
}

.tech-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.tech-card h4 {
    color: var(--primary-blue);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.tech-card p {
    font-size: 0.9375rem;
}

/* === APLICACIONES === */
.applications {
    background-color: var(--white);
}

.applications h2 {
    text-align: center;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.application-card {
    position: relative;
    height: 300px;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.application-card:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-lg);
}

.application-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.application-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.6) 70%, transparent 100%);
    color: var(--white);
}

.application-overlay h3 {
    color: var(--white);
    font-size: 1.25rem;
}

/* === PROCESO === */
.process {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #0f3a5c 100%);
    color: var(--white);
}

.process h2 {
    text-align: center;
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

.process-step {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.process-step:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.step-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    line-height: 60px;
    background: var(--primary-orange);
    color: var(--white);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.process-step h3 {
    color: var(--white);
    margin-bottom: var(--spacing-xs);
}

.process-step p {
    color: var(--light-gray);
    font-size: 0.9375rem;
}

/* === COMPARATIVO === */
.comparison {
    background-color: var(--light-gray);
}

.comparison h2 {
    text-align: center;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-lg);
}

.comparison-table {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.comparison-table th {
    background-color: var(--primary-blue);
    color: var(--white);
    font-weight: 600;
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table tr:nth-child(even) {
    background-color: var(--light-gray);
}

.comparison-table tr.highlight {
    background-color: rgba(245, 158, 11, 0.1);
    font-weight: 600;
}

.comparison-table .check {
    color: #10b981;
    font-weight: 700;
}

.comparison-table .cross {
    color: #ef4444;
}

/* === CTA FINAL === */
.cta-final {
    background: linear-gradient(135deg, var(--graphite) 0%, var(--dark-bg) 100%);
    color: var(--white);
    text-align: center;
}

.cta-final h2 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.cta-description {
    font-size: 1.125rem;
    color: var(--light-gray);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-lg);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: var(--spacing-sm);
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--white);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-orange);
    background: rgba(255, 255, 255, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.form-group select option {
    background-color: var(--dark-bg);
    color: var(--white);
}

/* === FOOTER === */
footer {
    background-color: var(--dark-bg);
    color: var(--light-gray);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-logo {
    width: 250px;
    height: auto;
    filter: drop-shadow(0 0 5px rgba(0, 0, 0, 0.2));
    margin-bottom: var(--spacing-sm);
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.footer-section p,
.footer-section a {
    color: var(--light-gray);
    font-size: 0.9375rem;
    text-decoration: none;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.footer-section a:hover {
    color: var(--primary-orange);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
}

/* === WHATSAPP FLOTANTE === */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: var(--primary-orange);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    background-color: #d97706;
}

.whatsapp-float svg {
    width: 32px;
    height: 32px;
    fill: var(--white);
}

/* === ANIMACIONES === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* === VIDEO SHOWCASE === */
.video-showcase {
    background-color: var(--white);
    padding: var(--spacing-xl) 0;
}

.video-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-lg);
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
}

.video-wrapper {
    flex: 1;
    min-width: 300px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: #000;
}

.video-wrapper video {
    width: 100%;
    display: block;
}

.video-info {
    flex: 1;
    min-width: 300px;
}

.video-info h2 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.video-info p {
    font-size: 1.2rem;
}

/* === PARTNERS SCROLLER === */
.partners-scroller {
    background-color: var(--white);
    padding: var(--spacing-lg) 0;
    overflow: hidden;
    border-top: 1px solid var(--border-light);
}

.partners-scroller h2 {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-md);
}

.marquee {
    display: flex;
    overflow: hidden;
    user-select: none;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.marquee-content {
    display: flex;
    flex-shrink: 0;
    min-width: 100%;
    gap: var(--spacing-md);
    animation: scroll 30s linear infinite;
}

@keyframes scroll {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(-50%);
    }
}

.marquee-item,
.marquee-item-product {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    white-space: nowrap;
    opacity: 0.3;
    transition: var(--transition);
    padding: 0 var(--spacing-md);
}

.marquee-item-product {
    color: var(--primary-orange);
    font-style: italic;
}

.marquee:hover .marquee-content {
    animation-play-state: paused;
}

.marquee-item:hover,
.marquee-item-product:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* === MEGA SCROLLER (Doble Carril) === */
.mega-scroller {
    background-color: var(--light-gray);
    padding: var(--spacing-xl) 0;
    overflow: hidden;
}

.mega-scroller .section-title {
    text-align: center;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

.mega-scroller .section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
}

.track-header {
    text-align: center;
    color: var(--primary-blue);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
    display: block;
    opacity: 0.8;
}

.marquee-track {
    display: flex;
    overflow: hidden;
    user-select: none;
    margin-bottom: var(--spacing-md);
}

.marquee-content {
    display: flex;
    flex-shrink: 0;
    gap: var(--spacing-md);
    animation: scroll-left 40s linear infinite;
    align-items: center;
}

.marquee-content.reverse {
    animation: scroll-right 40s linear infinite;
}

@keyframes scroll-left {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(-50%);
    }
}

@keyframes scroll-right {
    from {
        transform: translateX(-50%);
    }

    to {
        transform: translateX(0);
    }
}

.mega-scroller:hover .marquee-content {
    animation-play-state: paused;
}

/* Carril de Galería (Logos Aliados) */
.gallery-track .gallery-item {
    width: 200px;
    height: 120px;
    background: white;
    padding: 10px;
    flex-shrink: 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-track .gallery-item img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
}

.gallery-track .gallery-item:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* Carril de Materiales y Aliados */
.material-track {
    background: var(--white);
    padding: var(--spacing-sm) 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.marquee-label {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    white-space: nowrap;
    opacity: 0.4;
    transition: var(--transition);
    padding: 0 var(--spacing-md);
}

.marquee-divider {
    color: var(--primary-orange);
    font-weight: 300;
    font-size: 1.5rem;
    opacity: 0.3;
}

.marquee-label:hover {
    opacity: 1;
    color: var(--primary-orange);
    transform: scale(1.05);
}

/* === RESPONSIVE === */
/* === GALERÍA DE PROYECTOS (DYNAMIC) === */
@media (max-width: 768px) {
    .gallery-track .gallery-item {
        width: 140px;
        height: 90px;
    }

    .marquee-label {
        font-size: 1.125rem;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .hero {
        min-height: 100vh;
        padding: 3rem 0;
    }

    .hero-logo {
        width: 200px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .benefits-grid,
    .tech-grid,
    .applications-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .comparison-table {
        font-size: 0.875rem;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .comparison-table table {
        min-width: 600px;
    }

    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.8125rem;
        white-space: nowrap;
    }

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

    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.6rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }
}