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

:root {
    --primary-color: #4a9eff;
    --secondary-color: #6bb3ff;
    --accent-color: #7cc3ff;
    --dark-bg: #0a0e1a;
    --darker-bg: #050810;
    --card-bg: #131722;
    --light-bg: #1a1f2e;
    --text-light: #e2e8f0;
    --text-muted: #94a3b8;
    --border-color: #1e293b;
    --border-hover: #334155;
    --gradient-1: linear-gradient(135deg, #1a4d7a 0%, #2d7fc1 100%);
    --gradient-2: linear-gradient(135deg, #2d7fc1 0%, #4a9eff 100%);
    --gradient-dark: linear-gradient(135deg, #0a0e1a 0%, #131722 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(74, 158, 255, 0.2);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-light);
    background: var(--dark-bg);
    line-height: 1.7;
    font-size: 16px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

.container {
    width: 1200px;
    max-width: 95%;
    margin: 0 auto;
    padding: 0 20px;
}

/* HEADER */
header {
    background: var(--card-bg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.nav nav {
    display: flex;
    gap: 35px;
    align-items: center;
}

.nav a {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    position: relative;
    padding: 5px 0;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

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

.nav a:hover::after,
.nav a.active::after {
    width: 100%;
}

.nav a.active {
    color: var(--accent-color);
    font-weight: 600;
}

.lang-switcher {
    display: flex;
    gap: 5px;
    align-items: center;
    margin-left: 20px;
}

.lang-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.lang-btn:hover {
    background: var(--light-bg);
    color: var(--text-light);
    border-color: var(--border-hover);
}

.lang-btn.active {
    background: var(--gradient-2);
    color: var(--text-light);
    border-color: var(--accent-color);
    box-shadow: var(--shadow-glow);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon img {
    max-height: 50px;
    width: auto;
    filter: brightness(1.1);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--accent-color);
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* HERO */
.hero {
    background: var(--gradient-dark);
    color: var(--text-light);
    padding: 100px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(74,158,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero img {
    max-width: 800px;
    width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 30px;
}

.hero p {
    font-size: 22px;
    font-weight: 300;
    margin: 25px 0 35px;
    opacity: 0.9;
    letter-spacing: 0.5px;
}

.button {
    display: inline-block;
    padding: 16px 40px;
    background: var(--gradient-2);
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: 50px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* SECTION */
.section {
    padding: 100px 0;
    background: var(--dark-bg);
}

.section:nth-child(even) {
    background: var(--darker-bg);
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-light);
    line-height: 1.2;
}

.section-line {
    width: 80px;
    height: 4px;
    background: var(--gradient-2);
    border-radius: 2px;
    margin-bottom: 60px;
    box-shadow: var(--shadow-glow);
}

/* TWO COLUMN */
.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.two-column:last-child {
    margin-bottom: 0;
}

.two-column.reverse {
    direction: rtl;
}

.two-column.reverse > * {
    direction: ltr;
}

.two-column img {
    width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

.two-column img:hover {
    transform: scale(1.02);
    border-color: var(--border-hover);
}

.two-column p {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-muted);
}

.two-column h3 {
    font-size: 28px;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 20px;
}

/* PRODUCT GRID - VERTICAL LAYOUT */
.products {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-top: 50px;
}

.product {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 0;
    align-items: stretch;
}

.product:nth-child(even) {
    direction: rtl;
}

.product:nth-child(even) > * {
    direction: ltr;
}

.product:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
    border-color: var(--accent-color);
}

.product img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    margin-bottom: 0;
    border-radius: 0;
    min-height: 250px;
}

.product-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product h4 {
    font-size: 26px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.product p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-muted);
}

/* TECHNOLOGY */
.technology-section {
    display: flex;
    flex-direction: column;
    gap: 80px;
    margin-top: 50px;
}

.tech-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.tech-item:hover {
    box-shadow: var(--shadow-md), var(--shadow-glow);
    border-color: var(--accent-color);
}

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

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

.tech-video {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.tech-video iframe {
    width: 100%;
    height: 315px;
    border: none;
    display: block;
}

.tech-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--accent-color);
    line-height: 1.3;
}

.tech-content p {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-muted);
}

/* CONTACT */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    margin-bottom: 60px;
    align-items: start;
}

.contact-left {
    display: flex;
    flex-direction: column;
}

.contact-right {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.contact-right h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 25px;
    margin-top: 0;
    color: var(--accent-color);
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.contact-right h3:not(:first-of-type) {
    margin-top: 40px;
}

.contact-right p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 15px;
    color: var(--text-muted);
}

.contact-right strong {
    color: var(--accent-color);
    font-weight: 600;
}

.map-container {
    width: 100%;
    margin-top: 0;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.map-container iframe {
    width: 100%;
    height: 500px;
    border: none;
    display: block;
}

form {
    max-width: 600px;
    margin: 0 auto;
}

input, textarea {
    width: 100%;
    margin-bottom: 20px;
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--card-bg);
    color: var(--text-light);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.2);
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted);
}

/* FOOTER */
footer {
    background: var(--darker-bg);
    color: var(--text-muted);
    padding: 50px 0;
    margin-top: 0;
    font-size: 14px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* CORPORATE */
.corporate-content h3 {
    font-size: 28px;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 20px;
    margin-top: 40px;
}

.corporate-content h3:first-of-type {
    margin-top: 0;
}

.corporate-content p {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-muted);
    margin-bottom: 30px;
}

h3 {
    font-size: 28px;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 20px;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .nav nav {
        gap: 20px;
        flex-wrap: wrap;
    }
    
    .two-column,
    .tech-item,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product {
        grid-template-columns: 1fr;
    }
    
    .product:nth-child(even) {
        direction: ltr;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .hero {
        padding: 60px 0 50px;
    }
    
    .product-content {
        padding: 25px;
    }
}