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

:root {
    --primary-blue: #1a4b8c;
    --secondary-blue: #2d6bc4;
    --light-blue: #e8f1fc;
    --accent-blue: #4a90d9;
    --dark-blue: #0d2a52;
    --text-dark: #1a1a2e;
    --text-light: #6b7280;
    --white: #ffffff;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 15px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 90px;
    width: auto;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links li a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 15px;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links li a:hover {
    color: var(--primary-blue);
}

.nav-links li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

.nav-links li a:hover::after {
    width: 100%;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--gray-100);
    padding: 8px 15px;
    border-radius: 25px;
}

.lang-current {
    font-weight: 600;
    color: var(--primary-blue);
    font-size: 14px;
}

.lang-link {
    text-decoration: none;
    color: var(--text-light);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.lang-link:hover {
    color: var(--primary-blue);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 50%, var(--secondary-blue) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    text-align: center;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    color: var(--white);
    font-weight: 700;
    margin-bottom: 30px;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-text .subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 10px;
    font-weight: 400;
}

.hero-text .tagline {
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    color: var(--white);
    margin-top: 30px;
    font-weight: 500;
    font-style: italic;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.about {
    padding: 100px 0;
    background: var(--white);
}

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

.about-content p {
    color: var(--text-dark);
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 20px;
    text-align: justify;
}

.about-content strong {
    color: var(--primary-blue);
}

.services {
    padding: 100px 0;
    background: var(--gray-100);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    color: var(--primary-blue);
    text-align: center;
    margin-bottom: 60px;
    font-weight: 700;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--accent-blue);
    margin: 20px auto 0;
    border-radius: 2px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.service-card {
    background: var(--white);
    padding: 35px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-blue);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--light-blue);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.service-icon svg {
    width: 30px;
    height: 30px;
    color: var(--primary-blue);
}

.service-card h3 {
    font-size: 1.3rem;
    color: var(--primary-blue);
    margin-bottom: 15px;
    font-weight: 600;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.7;
}

.tech-fields {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    border-left: 4px solid var(--primary-blue);
    box-shadow: var(--shadow);
}

.tech-fields p {
    color: var(--text-dark);
    font-size: 1.1rem;
    line-height: 1.8;
}

.tech-fields strong {
    color: var(--primary-blue);
}

.tech-fields .highlight {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.2em;
}

.join {
    padding: 100px 0;
    background: var(--white);
}

.jobs-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.job-card {
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.job-title {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
    padding: 25px 30px;
    font-size: 1.4rem;
    font-weight: 600;
}

.job-details {
    padding: 30px;
}

.job-section {
    margin-bottom: 25px;
}

.job-section:last-child {
    margin-bottom: 0;
}

.job-section h4 {
    color: var(--primary-blue);
    font-size: 1.1rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.job-section ul {
    list-style: none;
    padding-left: 0;
}

.job-section ul li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 12px;
    color: var(--text-dark);
    line-height: 1.6;
}

.job-section ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background: var(--accent-blue);
    border-radius: 50%;
}

.partner-card .job-details p {
    font-size: 1.1rem;
    color: var(--text-dark);
    line-height: 1.7;
}

.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--white);
}

.contact-text h4 {
    color: var(--primary-blue);
    font-size: 1rem;
    margin-bottom: 8px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-text p {
    color: var(--text-dark);
    font-size: 1.1rem;
}

.contact-text a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-text a:hover {
    color: var(--accent-blue);
    text-decoration: underline;
}

.footer {
    background: var(--dark-blue);
    color: var(--white);
    padding: 40px 0;
}

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

.copyright {
    margin-bottom: 15px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
}

.privacy a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.privacy a:hover {
    color: var(--accent-blue);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        gap: 0;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        border-bottom: 1px solid var(--gray-200);
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-links li a {
        display: block;
        padding: 15px 0;
    }

    .nav-links li a::after {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-right {
        gap: 15px;
    }

    .lang-switch {
        position: absolute;
        top: 100%;
        right: 20px;
        margin-top: 10px;
        display: none;
    }

    .lang-switch.active {
        display: flex;
    }

    .jobs-container {
        max-width: 100%;
    }

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

    .hero-text h1 {
        font-size: 2rem;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
    }

    .contact-icon {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .logo img {
        height: 50px;
    }

    .lang-switch {
        padding: 6px 12px;
    }

    .lang-current,
    .lang-link {
        font-size: 12px;
    }

    .service-card {
        padding: 25px;
    }

    .job-details {
        padding: 20px;
    }

    .job-title {
        padding: 20px;
        font-size: 1.2rem;
    }
}