/* ============================================
   EDNEO TECH - Base Styles
   Layout, Typography, Components (NO COLORS)
   ============================================ */

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Typography Scale */
:root {
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 2rem;
    --font-4xl: 2.5rem;
    --font-5xl: 3rem;
    
    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
}

/* Spacing Scale */
:root {
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ============================================
   HEADER
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: all 0.3s ease;
}

.header.scrolled {
    padding: var(--space-sm) 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

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

.logo-img {
    height: 40px;
    width: auto;
}

.logo-name {
    height: 24px;
    width: auto;
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.lang-switcher a {
    text-decoration: none;
    font-size: var(--font-sm);
    font-weight: var(--font-medium);
    padding: var(--space-xs) var(--space-sm);
    transition: opacity 0.2s ease;
}

.lang-switcher a:hover {
    opacity: 0.7;
}

.lang-switcher .active {
    font-weight: var(--font-bold);
}

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

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-4xl) var(--space-md) var(--space-2xl);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.8) 100%);
}

.hero-content {
    max-width: 900px;
    z-index: 1;
}

.hero-title {
    font-size: clamp(var(--font-3xl), 5vw, var(--font-5xl));
    font-weight: var(--font-bold);
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: clamp(var(--font-lg), 2vw, var(--font-2xl));
    font-weight: var(--font-medium);
    margin-bottom: var(--space-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Theme Switcher */
.theme-switcher {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.theme-btn {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-sm);
    font-weight: var(--font-medium);
    text-decoration: none;
    border: 2px solid currentColor;
    border-radius: 4px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.theme-btn:hover {
    opacity: 0.8;
}

.theme-btn.active {
    border-width: 2px;
}

/* CTA Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-base);
    font-weight: var(--font-semibold);
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.btn-primary {
    padding: var(--space-md) var(--space-2xl);
    font-size: var(--font-lg);
}

.btn-secondary {
    border: 2px solid currentColor;
}

/* ============================================
   COMPANY INTRO
   ============================================ */

.company-intro {
    padding: var(--space-3xl) var(--space-md);
    text-align: center;
}

.company-intro h2 {
    font-size: var(--font-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-lg);
}

.company-intro p {
    font-size: var(--font-lg);
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto var(--space-md);
}

.company-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
    flex-wrap: wrap;
}

.company-meta span {
    font-size: var(--font-sm);
    opacity: 0.8;
}

/* ============================================
   SECTION STYLES
   ============================================ */

.section {
    padding: var(--space-3xl) var(--space-md);
}

.section-title {
    text-align: center;
    font-size: var(--font-3xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-2xl);
    position: relative;
    padding-bottom: var(--space-md);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
}

.section-subtitle {
    text-align: center;
    font-size: var(--font-lg);
    font-weight: var(--font-medium);
    margin-bottom: var(--space-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   PRODUCT CATEGORIES GRID
   ============================================ */

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.category-card {
    text-align: center;
    padding: var(--space-xl);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.category-card:hover {
    transform: translateY(-5px);
}

.category-icon {
    font-size: var(--font-4xl);
    margin-bottom: var(--space-md);
}

.category-title {
    font-size: var(--font-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-sm);
}

.category-description {
    font-size: var(--font-sm);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
    opacity: 0.8;
}

.category-products {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.category-products span {
    font-size: var(--font-sm);
    opacity: 0.8;
}

.category-cta {
    margin-top: auto;
}

/* ============================================
   FEATURED PRODUCTS
   ============================================ */

.featured-grid {
    display: grid;
    gap: var(--space-3xl);
}

.featured-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.featured-item.reverse {
    direction: rtl;
}

.featured-item.reverse > * {
    direction: ltr;
}

.featured-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.featured-content h3 {
    font-size: var(--font-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-md);
}

.featured-content p {
    font-size: var(--font-lg);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.featured-features {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.featured-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-size: var(--font-base);
}

.featured-features li::before {
    content: '•';
    font-size: var(--font-xl);
    line-height: 1;
    margin-top: 2px;
}

.featured-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: flex-start;
}

/* ============================================
   INVESTOR SECTION
   ============================================ */

.investor-overview {
    background: linear-gradient(135deg, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.2) 100%);
    padding: var(--space-3xl) var(--space-md);
}

.investor-content {
    max-width: 800px;
    margin: 0 auto;
}

.investor-content h2 {
    font-size: var(--font-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-lg);
    text-align: center;
}

.investor-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.investor-stat {
    text-align: center;
}

.investor-stat-value {
    font-size: var(--font-3xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-xs);
}

.investor-stat-label {
    font-size: var(--font-sm);
    opacity: 0.8;
}

.investor-cta {
    text-align: center;
}

/* ============================================
   CERTIFICATIONS
   ============================================ */

.certifications {
    padding: var(--space-3xl) var(--space-md);
    text-align: center;
}

.certifications h2 {
    font-size: var(--font-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-xl);
}

.certs-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-2xl);
    flex-wrap: wrap;
}

.cert-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.cert-logo {
    height: 60px;
    width: auto;
    opacity: 0.8;
}

.cert-label {
    font-size: var(--font-sm);
    font-weight: var(--font-medium);
}

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

.footer {
    padding: var(--space-3xl) var(--space-md) var(--space-xl);
    text-align: center;
    border-top: 1px solid currentColor;
    opacity: 0.9;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-logo {
    height: 40px;
    margin-bottom: var(--space-lg);
}

.footer-company {
    font-size: var(--font-sm);
    margin-bottom: var(--space-md);
}

.footer-address {
    font-size: var(--font-sm);
    margin-bottom: var(--space-lg);
    opacity: 0.8;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.footer-links a {
    text-decoration: none;
    font-size: var(--font-sm);
    transition: opacity 0.2s ease;
}

.footer-links a:hover {
    opacity: 0.7;
}

.footer-lang {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.footer-lang a {
    text-decoration: none;
    font-size: var(--font-sm);
    padding: var(--space-xs) var(--space-sm);
}

.footer-copyright {
    font-size: var(--font-xs);
    opacity: 0.6;
    margin-top: var(--space-xl);
}

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

/* Mobile First - Base styles already mobile-friendly */

/* Tablet - 768px */
@media (min-width: 768px) {
    html {
        font-size: 17px;
    }
    
    .hero {
        padding-top: calc(var(--space-4xl) + 80px);
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .featured-item {
        grid-template-columns: 1fr 1fr;
    }
}

/* Desktop - 992px */
@media (min-width: 992px) {
    html {
        font-size: 18px;
    }
    
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .company-meta {
        gap: var(--space-2xl);
    }
    
    .featured-actions {
        gap: var(--space-lg);
    }
}

/* Large Desktop - 1200px */
@media (min-width: 1200px) {
    .container {
        padding: 0;
    }
    
    .header-content {
        padding: 0;
    }
    
    .hero {
        padding-left: 0;
        padding-right: 0;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center {
    text-align: center;
}

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

.text-right {
    text-align: right;
}

.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

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

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

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

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }