/* ============================================
   AURONIX GLOBAL - CORPORATE WEBSITE
   Premium Design System
   ============================================ */

:root {
    /* Primary Colors */
    --color-primary: #0f172a;
    --color-primary-light: #1e293b;
    --color-accent: #0ea5e9;
    --color-accent-dark: #0284c7;
    
    /* Neutrals */
    --color-white: #ffffff;
    --color-gray-light: #f8fafc;
    --color-gray-medium: #e2e8f0;
    --color-gray-dark: #64748b;
    --color-black: #0f0f0f;
    
    /* Typography */
    --font-family: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 600;
    --font-weight-bold: 700;

    /* Overlays & motion */
    --color-overlay: linear-gradient(180deg, rgba(15, 23, 42, 0.55) 0%, rgba(15, 23, 42, 0.78) 100%);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    
    /* Border Radius */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.2);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-primary);
    background-color: var(--color-white);
    line-height: 1.6;
    font-size: 16px;
    font-weight: var(--font-weight-regular);
}

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: transparent;
    border-bottom: 1px solid transparent;
    transition: background-color var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom-color: var(--color-gray-medium);
    box-shadow: var(--shadow-sm);
}

/* Header sits over the dark hero: light text until scrolled */
.header .logo-text,
.header .nav-link { color: var(--color-white); }
.header .logo-subtext { color: var(--color-accent); }
.header .lang-btn { color: rgba(255, 255, 255, 0.85); border-color: rgba(255, 255, 255, 0.35); }
.header .lang-btn.active { background-color: var(--color-white); color: var(--color-primary); border-color: var(--color-white); }

.header.scrolled .logo-text,
.header.scrolled .nav-link { color: var(--color-primary); }
.header.scrolled .lang-btn { color: var(--color-gray-dark); border-color: var(--color-gray-medium); }
.header.scrolled .lang-btn.active { background-color: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
}

.logo {
    display: flex;
    flex-direction: column;
    gap: 2px;
    cursor: pointer;
}

.logo-text {
    font-size: 20px;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    letter-spacing: 2px;
}

.logo-subtext {
    font-size: 10px;
    font-weight: var(--font-weight-medium);
    color: var(--color-accent);
    letter-spacing: 2px;
}

.nav {
    display: flex;
    gap: var(--spacing-2xl);
    flex: 1;
    margin-left: var(--spacing-2xl);
}

.nav-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: 14px;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-smooth);
}

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

.nav-link:hover::after {
    width: 100%;
}

.language-selector {
    display: flex;
    gap: var(--spacing-sm);
    margin-left: auto;
}

.lang-btn {
    background: none;
    border: 1px solid var(--color-gray-medium);
    padding: 6px 12px;
    cursor: pointer;
    font-size: 12px;
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-dark);
    transition: all var(--transition-fast);
    border-radius: var(--border-radius);
}

.lang-btn.active {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.lang-btn:hover:not(.active) {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

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

.hero {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.hero-track {
    position: relative;
    width: 100%;
    height: 100vh;
}

.hero-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    /* Brand gradient is the fallback base; photo layered on top with dark overlay */
    background-color: var(--color-primary);
    background-image: var(--color-overlay), var(--slide-img);
    background-size: cover, cover;
    background-position: center, center;
    opacity: 0;
    visibility: hidden;
    transform: scale(1.04);
    transition: opacity 1s var(--ease-out), transform 6s linear, visibility 1s;
    z-index: 0;
}

.hero-slide.is-active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 14px;
    font-weight: var(--font-weight-medium);
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: clamp(32px, 5vw, 58px);
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    line-height: 1.12;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: clamp(17px, 2vw, 22px);
    color: rgba(255, 255, 255, 0.92);
    margin: 0 auto var(--spacing-2xl);
    font-weight: var(--font-weight-light);
    line-height: 1.5;
    max-width: 560px;
}

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

/* Entry animation for active slide content */
.hero-slide.is-active .hero-eyebrow { animation: fadeInUp 0.6s var(--ease-out) 0.15s both; }
.hero-slide.is-active .hero-title { animation: fadeInUp 0.7s var(--ease-out) 0.25s both; }
.hero-slide.is-active .hero-subtitle { animation: fadeInUp 0.7s var(--ease-out) 0.4s both; }
.hero-slide.is-active .hero-buttons { animation: fadeInUp 0.7s var(--ease-out) 0.55s both; }

/* Hero navigation */
.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.4);
    background: rgba(15, 23, 42, 0.25);
    color: var(--color-white);
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    backdrop-filter: blur(6px);
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.hero-arrow:hover { background: var(--color-accent); border-color: var(--color-accent); }
.hero-arrow--prev { left: var(--spacing-2xl); }
.hero-arrow--next { right: var(--spacing-2xl); }

.hero-dots {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: var(--spacing-sm);
}

.hero-dots button {
    width: 40px;
    height: 4px;
    border: none;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.35);
    cursor: pointer;
    padding: 0;
    transition: background var(--transition-fast);
}

.hero-dots button.is-active { background: var(--color-accent); }

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    padding: 15px 36px;
    font-size: 16px;
    font-weight: var(--font-weight-medium);
    border: none;
    border-radius: 999px;
    cursor: pointer;
    transition: all var(--transition-smooth);
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.4);
}

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

.btn-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
    transform: translateY(-2px);
}

/* ============================================
   SECTIONS - GENERAL STYLES
   ============================================ */

section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    letter-spacing: -1px;
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    color: var(--color-primary);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--color-accent);
    border-radius: 2px;
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about-section {
    background-color: var(--color-white);
    padding: var(--spacing-3xl) 0;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-subtitle {
    font-size: 28px;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.about-text p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-gray-dark);
    text-align: justify;
}

.about-text strong {
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

/* ============================================
   BUSINESS AREAS SECTION
   ============================================ */

.business-areas {
    background-color: var(--color-gray-light);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

/* Frameless image tiles: photo fills the tile, text overlaid at the bottom */
.business-card {
    position: relative;
    min-height: 360px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    cursor: pointer;
    text-align: left;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.business-card .card-media {
    position: absolute;
    inset: 0;
    height: 100%;
    width: 100%;
    margin: 0;
    z-index: 0;
}

/* image only (no veil); the scrim below keeps the text legible */
.business-card .card-media:not(.card-media--split) {
    background-image: var(--card-img);
}

.business-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(8, 15, 30, 0) 28%, rgba(8, 15, 30, 0.55) 62%, rgba(8, 15, 30, 0.92) 100%);
    z-index: 1;
}

.business-card .card-icon,
.business-card .card-title,
.business-card .card-description {
    position: relative;
    z-index: 2;
}

.business-card .card-icon {
    justify-content: flex-start;
    margin-bottom: var(--spacing-sm);
}

.business-card .card-icon svg { width: 42px; height: 42px; }

.business-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

/* Media banner shared by business & product cards */
.card-media {
    position: relative;
    height: 160px;
    background-color: var(--color-primary);
    background-image: linear-gradient(180deg, rgba(15,23,42,0.25) 0%, rgba(15,23,42,0.65) 100%), var(--card-img);
    background-size: cover;
    background-position: center;
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.card-media::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--card-img) center/cover;
    opacity: 0;
    transition: transform var(--transition-slow), opacity var(--transition-slow);
}

.business-card:hover .card-media,
.product-card:hover .card-media {
    background-size: 110%;
}

/* Split media: two clear images side by side (e.g. solar + climate) */
.card-media--split {
    display: flex;
    background-image: none;
    background-color: var(--color-gray-light);
}

.card-media--split .split-half {
    flex: 1;
    min-width: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: transform var(--transition-slow);
}

.card-media--split .split-half + .split-half {
    border-left: 2px solid var(--color-white);
}

.business-card:hover .card-media--split .split-half {
    transform: scale(1.06);
}

.card-icon {
    font-size: 48px;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
}

.card-icon svg {
    width: 64px;
    height: 64px;
    stroke: var(--color-accent);
    fill: none;
}

.card-title {
    font-size: 20px;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

.card-description {
    color: rgba(255, 255, 255, 0.85);
    font-size: 14px;
    line-height: 1.55;
}

/* ============================================
   CLARIA LABS SECTION
   ============================================ */

.claria-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.claria-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 100% 0%, rgba(14, 165, 233, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 0% 100%, rgba(14, 165, 233, 0.05) 0%, transparent 50%);
    z-index: 0;
}

/* Faded brand visual on the right of ClarIA */
.claria-section::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 45%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1677442136019-21780ecad995?auto=format&fit=crop&w=1200&q=60') center/cover;
    -webkit-mask-image: linear-gradient(270deg, rgba(0,0,0,0.5) 0%, transparent 90%);
    mask-image: linear-gradient(270deg, rgba(0,0,0,0.5) 0%, transparent 90%);
    opacity: 0.35;
    z-index: 0;
    pointer-events: none;
}

.claria-content {
    position: relative;
    z-index: 1;
}

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

.claria-section .section-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.claria-section .section-title::after {
    background-color: var(--color-white);
}

.claria-subtitle {
    font-size: 24px;
    font-weight: var(--font-weight-light);
    color: rgba(255, 255, 255, 0.8);
    letter-spacing: 2px;
}

.claria-description {
    font-size: 18px;
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
    opacity: 0.95;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.claria-services {
    background-color: rgba(255, 255, 255, 0.08);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-2xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.claria-services-title {
    font-size: 22px;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.services-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.services-list li {
    padding: var(--spacing-md);
    padding-left: var(--spacing-lg);
    position: relative;
    opacity: 0.9;
    transition: opacity var(--transition-fast);
}

.services-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.services-list li:hover::before {
    opacity: 1;
}

.claria-section .btn {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   PRODUCTS SECTION
   ============================================ */

.products-section {
    background-color: var(--color-white);
}

/* ---- Generic carousel (solutions) ---- */
.carousel {
    position: relative;
    padding: 0 var(--spacing-3xl);
}

.carousel-viewport {
    overflow: hidden;
}

.carousel-track {
    display: flex;
    gap: var(--spacing-xl);
    transition: transform 0.6s var(--ease-out);
    will-change: transform;
}

.carousel-arrow {
    position: absolute;
    top: 38%;
    transform: translateY(-50%);
    z-index: 4;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--color-gray-medium);
    background: var(--color-white);
    color: var(--color-primary);
    font-size: 26px;
    line-height: 1;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.carousel-arrow:hover { background: var(--color-accent); color: var(--color-white); border-color: var(--color-accent); }
.carousel-arrow:disabled { opacity: 0.35; cursor: default; }
.carousel-arrow--prev { left: 0; }
.carousel-arrow--next { right: 0; }

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.carousel-dots button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background: var(--color-gray-medium);
    cursor: pointer;
    padding: 0;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.carousel-dots button.is-active { background: var(--color-accent); transform: scale(1.25); }

/* ---- Product cards ---- */
.products-grid { gap: var(--spacing-xl); }

.product-card {
    flex: 0 0 calc((100% - 2 * var(--spacing-xl)) / 3);
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: all var(--transition-smooth);
    border: 1px solid var(--color-gray-medium);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.product-card .card-media {
    height: 180px;
    margin-bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-icon {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    color: var(--color-white);
}

.product-icon svg { width: 72px; height: 72px; }

.product-body {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.product-name {
    font-size: 19px;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.product-desc {
    color: var(--color-gray-dark);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    flex: 1;
}

.card-link {
    align-self: flex-start;
    color: var(--color-accent);
    font-weight: var(--font-weight-medium);
    font-size: 14px;
    text-decoration: none;
    transition: gap var(--transition-fast);
}

.card-link::after { content: ' →'; }
.card-link:hover { color: var(--color-accent-dark); }

/* ============================================
   B2B SECTION
   ============================================ */

.b2b-section {
    position: relative;
    background-color: var(--color-primary);
    background-image:
        linear-gradient(180deg, rgba(15, 23, 42, 0.86) 0%, rgba(15, 23, 42, 0.92) 100%),
        url('https://images.pexels.com/photos/8204363/pexels-photo-8204363.jpeg?auto=compress&cs=tinysrgb&w=1600');
    background-size: cover;
    background-position: center;
    color: var(--color-white);
}

.b2b-section .section-title { color: var(--color-white); }

.b2b-description {
    font-size: 18px;
    text-align: center;
    max-width: 900px;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
}

.b2b-benefits {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl) var(--spacing-2xl);
    max-width: 900px;
    margin: 0 auto;
}

.b2b-benefits .benefit-item h4 { color: var(--color-white); }

.benefit-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.benefit-icon {
    width: 40px;
    height: 40px;
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
    font-size: 20px;
}

.benefit-item h4 {
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    font-size: 16px;
}

/* ============================================
   WHY SECTION
   ============================================ */

.why-section {
    position: relative;
    background-color: #eef4fb;
    background-image:
        radial-gradient(circle at 82% 0%, rgba(14, 165, 233, 0.10) 0%, transparent 45%),
        linear-gradient(180deg, #e8f1fb 0%, #f8fafc 65%);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    max-width: 1100px;
    margin: 0 auto;
}

.why-card {
    padding: var(--spacing-xl);
    border: 1px solid var(--color-gray-medium);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-smooth);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.why-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-6px);
}

.why-card h3 {
    color: var(--color-primary);
    font-size: 18px;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.why-card p {
    color: var(--color-gray-dark);
    font-size: 15px;
    line-height: 1.6;
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact-section {
    position: relative;
    background-color: var(--color-gray-light);
    background-image:
        linear-gradient(180deg, rgba(248, 250, 252, 0.90) 0%, rgba(248, 250, 252, 0.94) 100%),
        url('https://images.pexels.com/photos/37320179/pexels-photo-37320179.jpeg?auto=compress&cs=tinysrgb&w=1600');
    background-size: cover;
    background-position: center;
}

/* Thin divider between "Por Qué Auronix" and "Solicitar Información" */
.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: min(1100px, 90%);
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(14, 165, 233, 0.55) 50%, transparent 100%);
}

/* Two columns: info left, form right */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: stretch;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-heading {
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.contact-text {
    font-size: 17px;
    line-height: 1.7;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-2xl);
}

.contact-detail {
    margin-bottom: var(--spacing-lg);
    font-size: 16px;
}

.contact-detail-label {
    display: block;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-detail a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
}

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

.contact-whatsapp {
    margin-top: var(--spacing-xl);
}

.whatsapp-icon {
    display: inline-block;
    margin-top: var(--spacing-md);
    color: #25D366;
    line-height: 0;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.whatsapp-icon:hover {
    transform: scale(1.12);
    color: #1da851;
}

.contact-form {
    background-color: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-gray-medium);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--color-gray-medium);
    border-radius: var(--border-radius);
    background-color: var(--color-gray-light);
    color: var(--color-primary);
    font-family: var(--font-family);
    font-size: 16px;
    transition: all var(--transition-smooth);
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background-color: var(--color-white);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.contact-form .btn-primary {
    width: 100%;
    margin-top: var(--spacing-md);
}

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

.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    font-size: 16px;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
}

/* ============================================
   ANIMATIONS
   ============================================ */

/* Modal details styles */
.modal { display: none; position: fixed; inset: 0; z-index: 2000; }
.modal[aria-hidden="false"] { display: block; }
.modal-overlay { position: absolute; inset: 0; background: rgba(8,24,50,0.5); backdrop-filter: blur(4px); }
.modal-content { position: relative; width: 100%; max-width: 760px; margin: 6vh auto; background: var(--color-white); border-radius: 12px; padding: var(--spacing-2xl); box-shadow: 0 10px 30px rgba(2,6,23,0.15); z-index: 2; }
.modal-close { position: absolute; top: 12px; right: 12px; background: none; border: none; font-size: 28px; cursor: pointer; color: var(--color-gray-dark); }
.modal-title { font-size: 22px; color: var(--color-primary); margin-bottom: var(--spacing-md); }
.modal-body { color: var(--color-gray-dark); line-height: 1.8; font-size: 16px; }
.modal-body p { margin-bottom: var(--spacing-md); }
.modal-body p:last-child { margin-bottom: 0; }
.modal-body strong { color: var(--color-primary); }

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
    will-change: opacity, transform;
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* Offset anchors so the fixed header doesn't cover section tops */
section[id] { scroll-margin-top: 90px; }

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

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
    .hero-slide { transform: none; }
    .reveal { opacity: 1; transform: none; }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
    
    .nav {
        flex: 100%;
        order: 3;
        gap: var(--spacing-lg);
        margin-left: 0;
        justify-content: center;
    }
    
    .language-selector {
        margin-left: 0;
        order: 2;
    }
    
    .hero-content { text-align: center; margin: 0 auto; }
    .hero-buttons { justify-content: center; }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-arrow { display: none; }

    .business-grid {
        grid-template-columns: 1fr 1fr;
        max-width: 560px;
    }

    /* 2 cards per view on tablet */
    .product-card {
        flex-basis: calc((100% - var(--spacing-xl)) / 2);
    }
    .carousel { padding: 0 var(--spacing-2xl); }

    .b2b-benefits {
        grid-template-columns: 1fr 1fr;
        max-width: 480px;
    }

    .why-grid {
        grid-template-columns: 1fr 1fr;
        max-width: 560px;
    }

    .contact-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        max-width: 520px;
    }

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

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

    .b2b-benefits {
        grid-template-columns: 1fr;
        max-width: 320px;
    }

    .why-grid {
        grid-template-columns: 1fr;
        max-width: 320px;
    }

    .business-grid {
        grid-template-columns: 1fr;
        max-width: 340px;
    }

    /* 1 card per view on phones */
    .product-card {
        flex-basis: 100%;
    }
    .carousel { padding: 0; }
    .carousel-arrow { width: 40px; height: 40px; font-size: 22px; }
    .carousel-arrow--prev { left: var(--spacing-xs); }
    .carousel-arrow--next { right: var(--spacing-xs); }
    
    .nav-link {
        font-size: 13px;
    }
    
    .logo-text {
        font-size: 16px;
    }
    
    section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section-title {
        font-size: 24px;
        margin-bottom: var(--spacing-xl);
    }
}