/* ========================================
   UPCYON - Baterías LiFePO4 para profesionales
   Design system: Clean, white, green accents
   ======================================== */

/* --- Fonts --- */
@font-face {
    font-family: 'Nortica';
    src: url('../fonts/NorticaTypeface-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Nortica';
    src: url('../fonts/NorticaTypeface-Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Nortica';
    src: url('../fonts/NorticaTypeface-SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Nortica';
    src: url('../fonts/NorticaTypeface-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* --- Variables --- */
:root {
    --green: #3A7D44;
    --green-dark: #2D5A3D;
    --green-bright: #5DBF6A;
    --green-light: #E8F5E9;
    --green-glow: rgba(58,125,68,0.35);
    --gold: #D4A843;
    --text: #1A1A1A;
    --text-light: #555;
    --text-muted: #888;
    --bg: #FFFFFF;
    --bg-alt: #F7F9F7;
    --bg-dark: #1A1A1A;
    --hero-bg: #07160A;
    --border: #E0E0E0;
    --radius: 8px;
    --radius-lg: 16px;
    --shadow: 0 2px 12px rgba(0,0,0,0.07);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --shadow-green: 0 8px 30px rgba(58,125,68,0.25);
    --transition: 0.3s ease;
    --container: 1200px;
    --header-h: 72px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
    font-family: 'Nortica', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 400;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--green); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--green-dark); }
ul { list-style: none; }

/* --- Layout --- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: #fff; }
.text-center { text-align: center; }

/* --- Typography --- */
h1, h2, h3, h4 { font-weight: 600; line-height: 1.2; color: var(--text); }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); margin-bottom: 24px; }
h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin-bottom: 16px; }
h3 { font-size: clamp(1.2rem, 3vw, 1.6rem); margin-bottom: 12px; }
h4 { font-size: 1.1rem; margin-bottom: 8px; }
.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 640px;
    margin: 0 auto 48px;
}
.tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--green);
    background: var(--green-light);
    border: 1px solid rgba(58,125,68,0.25);
    border-radius: 100px;
    padding: 5px 14px;
    margin-bottom: 16px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
    justify-content: center;
}
.btn-primary {
    background: var(--green);
    color: #fff;
    border-color: var(--green);
    box-shadow: 0 4px 18px var(--green-glow);
}
.btn-primary:hover {
    background: var(--green-dark);
    border-color: var(--green-dark);
    color: #fff;
    box-shadow: 0 6px 28px rgba(58,125,68,0.5);
    transform: translateY(-1px);
}
.btn-outline {
    background: transparent;
    color: var(--green);
    border-color: var(--green);
}
.btn-outline:hover {
    background: var(--green);
    color: #fff;
}
.btn-outline-light {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.3);
}
.btn-outline-light:hover {
    background: rgba(255,255,255,0.1);
    border-color: #fff;
    color: #fff;
}
.btn-sm { padding: 10px 20px; font-size: 0.85rem; }
.btn-lg { padding: 18px 40px; font-size: 1.05rem; }
.btn-group { display: flex; gap: 16px; flex-wrap: wrap; }

/* ========================================
   HEADER
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    height: var(--header-h);
    transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow); }
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.logo img { height: 36px; width: auto; }
.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}
.main-nav ul {
    display: flex;
    align-items: center;
    gap: 8px;
}
.main-nav a {
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--radius);
    transition: all var(--transition);
}
.main-nav a:hover,
.main-nav a.active { color: var(--green); background: var(--green-light); }
.nav-cta {
    background: var(--green) !important;
    color: #fff !important;
    padding: 10px 20px !important;
}
.nav-cta:hover { background: var(--green-dark) !important; }
.lang-switch {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-left: 12px;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.lang-switch:hover { color: var(--green); border-color: var(--green); }

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: all var(--transition);
    border-radius: 2px;
}

/* ========================================
   HERO
   ======================================== */
.hero {
    padding: calc(var(--header-h) + 80px) 0 90px;
    background: var(--hero-bg);
    min-height: 80vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}
/* Dot grid overlay */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(93,191,106,0.12) 1px, transparent 1px);
    background-size: 36px 36px;
    pointer-events: none;
}
/* Green glow bottom-right */
.hero::after {
    content: '';
    position: absolute;
    bottom: -80px;
    right: -80px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(58,125,68,0.18) 0%, transparent 70%);
    pointer-events: none;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero h1 {
    font-size: clamp(2.2rem, 4.5vw, 3.6rem);
    color: #ffffff;
    margin-bottom: 20px;
    line-height: 1.1;
    font-weight: 700;
}
.hero h1 em {
    font-style: normal;
    color: var(--green-bright);
}
.hero .tag {
    background: rgba(93,191,106,0.12);
    color: var(--green-bright);
    border-color: rgba(93,191,106,0.3);
}
.hero-text p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.65);
    margin-bottom: 36px;
    max-width: 520px;
    line-height: 1.7;
}
.hero .btn-outline {
    color: rgba(255,255,255,0.9);
    border-color: rgba(255,255,255,0.3);
}
.hero .btn-outline:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.6);
    color: #fff;
}
/* Hero stats row */
.hero-stats {
    display: flex;
    gap: 36px;
    margin-top: 48px;
    padding-top: 36px;
    border-top: 1px solid rgba(255,255,255,0.1);
    flex-wrap: wrap;
}
.hero-stat { text-align: left; }
.hero-stat-number {
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--green-bright);
    line-height: 1;
    font-family: 'Nortica', sans-serif;
}
.hero-stat-label {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.45);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-top: 4px;
}
.hero-image {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 0;
}
.hero-image > img {
    max-height: 520px;
    max-width: 100%;
    width: auto;
    margin: 0 auto;
    object-fit: contain;
    filter: drop-shadow(0 32px 60px rgba(0,0,0,0.55)) drop-shadow(0 0 80px rgba(58,125,68,0.25));
}
/* Framed product photo — portrait JPEG with background */
.hero-product-frame {
    position: relative;
    width: 100%;
    max-width: 460px;
    /* Fixed aspect ratio: crop portrait photo to show battery label */
    aspect-ratio: 3 / 4;
    border-radius: 20px;
    overflow: hidden;
    box-shadow:
        0 0 0 1px rgba(93,191,106,0.22),
        0 24px 64px rgba(0,0,0,0.55),
        0 0 90px rgba(58,125,68,0.15);
    background: #f0efe9;
}
.hero-product-frame img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 55%;
    border-radius: 20px;
    transition: transform 0.6s ease;
}
.hero-product-frame:hover img {
    transform: scale(1.04);
}

/* ========================================
   CERTIFICATIONS BAR
   ======================================== */
.certs-bar {
    padding: 32px 0;
    border-bottom: 1px solid var(--border);
}
.certs-bar .container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}
.certs-bar h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 0;
    white-space: nowrap;
}
.cert-icons {
    display: flex;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}
.cert-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text);
    opacity: 0.7;
    transition: opacity var(--transition);
}
.cert-icon:hover { opacity: 1; }
.cert-icon svg { width: 36px; height: 36px; }

/* ========================================
   VALUE PROPOSITIONS
   ======================================== */
.value-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}
.value-card {
    text-align: center;
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    background: var(--bg);
    border: 1px solid var(--border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.value-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--green), var(--green-bright));
    opacity: 0;
    transition: opacity var(--transition);
}
.value-card:hover::before { opacity: 1; }
.value-card:hover {
    border-color: rgba(58,125,68,0.3);
    box-shadow: var(--shadow-green);
    transform: translateY(-6px);
}
.value-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    border-radius: 14px;
    background: var(--green-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--green);
    transition: all var(--transition);
}
.value-card:hover .value-icon {
    background: var(--green);
    color: #fff;
    box-shadow: 0 4px 16px var(--green-glow);
}
.value-icon svg { width: 28px; height: 28px; }
.value-card h3 { font-size: 1.05rem; margin-bottom: 8px; font-weight: 700; }
.value-card p { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; }

/* ========================================
   TECHNOLOGY PREVIEW (Home)
   ======================================== */
.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
}
.tech-grid .tech-card {
    flex: 0 0 calc(33.333% - 16px);
    max-width: calc(33.333% - 16px);
}
.tech-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    background: var(--bg);
    border: 1px solid var(--border);
    transition: all var(--transition);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.tech-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(circle at 50% -20%, rgba(58,125,68,0.07), transparent 65%);
    opacity: 0;
    transition: opacity var(--transition);
}
.tech-card:hover::after { opacity: 1; }
.tech-card:hover {
    border-color: var(--green);
    box-shadow: var(--shadow-green);
    transform: translateY(-4px);
}
.tech-card-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    color: var(--green);
    position: relative;
    z-index: 1;
}
.tech-card h3 { font-size: 1rem; margin-bottom: 8px; font-weight: 700; position: relative; z-index: 1; }
.tech-card p { font-size: 0.88rem; color: var(--text-light); position: relative; z-index: 1; }

/* ========================================
   SECTORS
   ======================================== */
.sectors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.sector-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 280px;
    display: flex;
    align-items: flex-end;
    background: var(--bg-dark);
}
.sector-card img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.5;
    transition: opacity var(--transition);
}
.sector-card:hover img { opacity: 0.35; }
.sector-card-content {
    position: relative;
    z-index: 1;
    padding: 32px;
    color: #fff;
}
.sector-card h3 { color: #fff; font-size: 1.4rem; }
.sector-card p { color: rgba(255,255,255,0.8); font-size: 0.9rem; }

/* ========================================
   PRODUCTS GRID
   ======================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 32px;
}
.product-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg);
    transition: all var(--transition);
}
.product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}
.product-card-image {
    aspect-ratio: 4/3;
    overflow: hidden;
    background: #f5f5f5;
}
.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}
.product-card:hover .product-card-image img { transform: scale(1.03); }
.product-card-body { padding: 24px; }
.product-card-body h3 { margin-bottom: 4px; }
.product-card-capacity {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--green);
    margin-bottom: 12px;
}
.product-card-specs {
    display: flex;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.product-card-specs span {
    display: flex;
    align-items: center;
    gap: 4px;
}
.product-card-desc {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 16px;
}
.product-card-footer {
    display: flex;
    gap: 12px;
}

/* ========================================
   PRODUCT DETAIL
   ======================================== */
.product-detail { padding-top: calc(var(--header-h) + 40px); padding-bottom: 80px; }
.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}
.product-gallery { position: sticky; top: calc(var(--header-h) + 24px); }
.product-gallery-main {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #f5f5f5;
    margin-bottom: 12px;
}
.product-gallery-main img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.product-gallery-thumbs { display: flex; gap: 12px; }
.product-gallery-thumbs img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 2px solid var(--border);
    cursor: pointer;
    transition: border-color var(--transition);
}
.product-gallery-thumbs img.active,
.product-gallery-thumbs img:hover { border-color: var(--green); }

.product-info .tag { margin-bottom: 8px; }
.product-info h1 { margin-bottom: 8px; }
.product-capacity-badge {
    display: inline-block;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--green);
    margin-bottom: 20px;
}

.specs-table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.specs-table tr { border-bottom: 1px solid var(--border); }
.specs-table td { padding: 12px 0; font-size: 0.92rem; }
.specs-table td:first-child { font-weight: 500; color: var(--text); width: 45%; }
.specs-table td:last-child { color: var(--text-light); }

.product-features { margin: 24px 0; }
.product-features li {
    padding: 8px 0;
    padding-left: 28px;
    position: relative;
    font-size: 0.92rem;
    color: var(--text-light);
}
.product-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--green-light);
    border: 2px solid var(--green);
}

.product-actions { display: flex; flex-direction: column; gap: 12px; margin-top: 32px; }

/* ========================================
   TECHNOLOGY PAGE
   ======================================== */
.tech-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 60px 0;
}
.tech-section:nth-child(even) { direction: rtl; }
.tech-section:nth-child(even) > * { direction: ltr; }
.tech-section-content h2 { margin-bottom: 16px; }
.tech-section-content p { color: var(--text-light); margin-bottom: 16px; }
.tech-section-visual {
    background: var(--bg-alt);
    border-radius: var(--radius-lg);
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}
.tech-section-visual svg,
.tech-section-visual img { max-width: 100%; max-height: 280px; }

.tech-benefits {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}
.tech-benefit {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.92rem;
}
.tech-benefit-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--green-light);
    color: var(--green);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}

/* ========================================
   CALCULATOR
   ======================================== */
.calc-container { max-width: 900px; margin: 0 auto; }
.calc-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 32px;
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 4px;
}
.calc-tab {
    flex: 1;
    padding: 14px 24px;
    border: none;
    background: none;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    border-radius: var(--radius);
    transition: all var(--transition);
}
.calc-tab.active {
    background: var(--bg);
    color: var(--green);
    box-shadow: var(--shadow);
    font-weight: 600;
}
.calc-panel { display: none; }
.calc-panel.active { display: block; }

.appliance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}
.appliance-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition);
}
.appliance-item.selected { border-color: var(--green); background: var(--green-light); }
.appliance-check {
    width: 22px;
    height: 22px;
    border: 2px solid var(--border);
    border-radius: 4px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
}
.appliance-item.selected .appliance-check {
    background: var(--green);
    border-color: var(--green);
    color: #fff;
}
.appliance-info { flex: 1; }
.appliance-name { font-weight: 500; font-size: 0.92rem; }
.appliance-watts { font-size: 0.8rem; color: var(--text-muted); }
.appliance-hours {
    width: 60px;
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.85rem;
    text-align: center;
}

.pro-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 32px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.88rem; font-weight: 500; }
.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.92rem;
    transition: border-color var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--green);
}

.calc-results {
    margin-top: 32px;
    border: 2px solid var(--green);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.calc-results-header {
    background: var(--green);
    color: #fff;
    padding: 16px 24px;
    font-weight: 600;
    font-size: 1.05rem;
}
.calc-results-body { padding: 24px; }
.results-table { width: 100%; border-collapse: collapse; }
.results-table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 2px solid var(--border);
}
.results-table td { padding: 14px 16px; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
.results-table tr:last-child td { border-bottom: none; }
.results-table .recommended { background: var(--green-light); font-weight: 600; }
.autonomy-value { font-weight: 700; color: var(--green); font-size: 1.1rem; }

/* ========================================
   BLOG
   ======================================== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 32px;
}
.blog-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg);
    transition: all var(--transition);
}
.blog-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.blog-card-image { aspect-ratio: 16/9; overflow: hidden; }
.blog-card-image img { width: 100%; height: 100%; object-fit: cover; }
.blog-card-body { padding: 24px; }
.blog-card h3 { margin-bottom: 8px; }
.blog-card p { font-size: 0.9rem; color: var(--text-light); }

/* ========================================
   CONTACT FORM
   ======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start;
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.contact-info-card {
    padding: 32px;
    background: var(--bg-alt);
    border-radius: var(--radius-lg);
}
.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 24px;
}
.contact-info-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--green-light);
    color: var(--green);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
    background: linear-gradient(135deg, #071a0a 0%, #0e2e12 60%, #163319 100%);
    color: #fff;
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(93,191,106,0.1) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { color: #fff; margin-bottom: 16px; font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
.cta-section p { color: rgba(255,255,255,0.7); margin-bottom: 36px; max-width: 560px; margin-left: auto; margin-right: auto; font-size: 1.05rem; }

/* ========================================
   CERTIFICATION DETAIL CARDS (Nosotros)
   ======================================== */
.certs-detail-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.cert-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 0;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.cert-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--green), var(--green-bright));
    opacity: 0;
    transition: opacity var(--transition);
}
.cert-card:hover::before { opacity: 1; }
.cert-card:hover {
    border-color: rgba(58,125,68,0.3);
    box-shadow: var(--shadow-green);
    transform: translateY(-4px);
}
.cert-card-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
}
.cert-badge-pill {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--green);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 800;
    color: white;
    letter-spacing: 0.5px;
    text-align: center;
    line-height: 1.2;
    transition: all var(--transition);
}
.cert-card:hover .cert-badge-pill {
    background: var(--green-dark);
    box-shadow: 0 4px 14px var(--green-glow);
}
.cert-card-name {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text);
    line-height: 1.2;
}
.cert-card-std {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
    margin-top: 3px;
}
.cert-card-desc {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 16px;
}
.cert-card-value {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--green);
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

@media (max-width: 1024px) {
    .certs-detail-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .certs-detail-grid { grid-template-columns: 1fr; }
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 60px 0 0; }
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-logo { filter: brightness(0) invert(1); margin-bottom: 16px; }
.site-footer h4 { color: #fff; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 16px; }
.site-footer ul li { margin-bottom: 8px; }
.site-footer a { color: rgba(255,255,255,0.7); }
.site-footer a:hover { color: #fff; }
.footer-social { display: flex; gap: 12px; margin-top: 16px; }
.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    transition: all var(--transition);
}
.footer-social a:hover { border-color: var(--green); color: var(--green); }
.cert-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.cert-badge {
    padding: 4px 10px;
    font-size: 0.7rem;
    font-weight: 600;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    color: rgba(255,255,255,0.6);
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    font-size: 0.85rem;
}

/* ========================================
   PAGE HEADER (inner pages)
   ======================================== */
.page-header {
    padding: calc(var(--header-h) + 48px) 0 48px;
    background: var(--bg-alt);
}
.breadcrumb {
    display: flex;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--green); }
.breadcrumb span { color: var(--text-muted); }

/* ========================================
   ALERT / MESSAGES
   ======================================== */
.alert {
    padding: 16px 24px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    font-size: 0.92rem;
}
.alert-success { background: var(--green-light); color: var(--green-dark); border: 1px solid var(--green); }
.alert-error { background: #FEE; color: #C00; border: 1px solid #FAA; }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-image { display: none; }
    .value-grid { grid-template-columns: repeat(2, 1fr); }
    .sectors-grid { grid-template-columns: 1fr; }
    .product-detail-grid { grid-template-columns: 1fr; }
    .product-gallery { position: static; }
    .tech-section { grid-template-columns: 1fr; }
    .tech-section:nth-child(even) { direction: ltr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .tech-grid .tech-card { flex: 0 0 calc(50% - 12px); max-width: calc(50% - 12px); }
}

@media (max-width: 768px) {
    :root { --header-h: 64px; }
    .section { padding: 56px 0; }
    .container { padding: 0 16px; }

    .nav-toggle { display: flex; }
    .main-nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg);
        padding: 24px;
        transform: translateX(100%);
        transition: transform var(--transition);
        z-index: 999;
    }
    .main-nav.open { transform: translateX(0); }
    .main-nav ul { flex-direction: column; gap: 4px; }
    .main-nav a { display: block; padding: 14px 16px; font-size: 1rem; }
    .nav-cta { text-align: center; margin-top: 8px; }
    .lang-switch { margin: 16px 0 0; display: block; text-align: center; }

    .value-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .blog-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .pro-inputs { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .btn-group { flex-direction: column; }
    .certs-bar .container { flex-direction: column; gap: 16px; }
    .tech-grid .tech-card { flex: 0 0 100%; max-width: 100%; }
}

/* ========================================
   ANIMATIONS
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }