:root {
    --primary: #0066CC;
    --primary-dark: #004C99;
    --primary-light: #3399FF;
    --secondary: #00A3A3;
    --bg-light: #F0F8FF;
    --bg-white: #FFFFFF;
    --text-dark: #1A1A2E;
    --text-gray: #4A5568;
    --text-light: #718096;
    --border: #E2E8F0;
    --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);
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

.header {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 102, 204, 0.95);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
}

.nav.scrolled .nav-link {
    color: var(--text-dark);
}

.logo img {
    height: 40px;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    padding-right: 220px;
}

.logo img {
    height: 40px;
    filter: brightness(0) invert(1);
    transition: var(--transition);
}

.nav.scrolled .logo img {
    filter: none;
}

.eu-logo {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 1001;
}

.eu-logo img {
    height: 180px;
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-link {
    color: white;
    font-weight: 500;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition);
    position: relative;
}

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

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

.nav.scrolled .nav-link::after {
    background: var(--primary);
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.nav.scrolled .lang-switch {
    color: var(--text-gray);
}

.lang-btn {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    padding: 4px 8px;
    border-radius: 4px;
}

.lang-btn:hover,
.lang-btn.active {
    color: white;
    background: rgba(255, 255, 255, 0.2);
}

.nav.scrolled .lang-btn:hover,
.nav.scrolled .lang-btn.active {
    color: var(--primary);
    background: var(--bg-light);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: white;
    transition: var(--transition);
}

.nav.scrolled .nav-toggle span {
    background: var(--text-dark);
}

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
}

.hero-content {
    max-width: 800px;
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: 4px;
    text-transform: uppercase;
    font-family: 'Arial Black', 'Helvetica Neue', sans-serif;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.btn-primary:hover {
    background: var(--bg-light);
    border-color: var(--bg-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

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

.certifications {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.cert-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
}

.cert-icon {
    color: #10B981;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.7;
    animation: bounce 2s infinite;
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(10px);
    }
    60% {
        transform: translateY(5px);
    }
}

.section {
    padding: 100px 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-light);
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-dark);
    max-width: 700px;
    margin: 0 auto;
}

.about {
    background: var(--bg-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-text p {
    color: var(--text-gray);
    margin-bottom: 24px;
    font-size: 17px;
    line-height: 1.8;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-stats {
    display: grid;
    gap: 32px;
}

.stat-item {
    padding: 32px;
    background: var(--bg-light);
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-gray);
    font-weight: 500;
}

.services {
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.service-card {
    background: white;
    padding: 40px 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

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

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
}

.service-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--primary);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.service-card p {
    color: var(--text-gray);
    font-size: 15px;
    line-height: 1.7;
}

.partners {
    background: var(--bg-white);
}

.partners-intro {
    text-align: center;
    color: var(--text-gray);
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto 48px;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.partner-flag {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    background: var(--bg-light);
    border-radius: var(--radius);
    font-size: 3rem;
    transition: var(--transition);
    cursor: default;
}

.partner-flag:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
    background: white;
}

.partner-flag[data-country]::after {
    content: attr(data-country);
    font-size: 12px;
    color: var(--text-gray);
    margin-top: 8px;
    font-weight: 500;
}

.innovation {
    background: linear-gradient(135deg, var(--bg-light) 0%, #E6F2FF 100%);
}

.innovation-card {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 48px;
    background: white;
    border-radius: 16px;
    padding: 48px;
    box-shadow: var(--shadow-lg);
    align-items: center;
}

.innovation-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.innovation-content p {
    color: var(--text-gray);
    margin-bottom: 16px;
    line-height: 1.7;
}

.innovation-stats {
    display: flex;
    gap: 48px;
    margin: 32px 0;
    padding: 24px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.innovation-stat {
    display: flex;
    flex-direction: column;
}

.innovation-stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
}

.innovation-stat-label {
    font-size: 14px;
    color: var(--text-light);
}

.innovation-id {
    font-size: 13px;
    color: var(--text-light);
    font-family: monospace;
}

.innovation-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 32px;
    background: var(--bg-light);
    border-radius: var(--radius);
    min-width: 160px;
}

.eu-flag {
    font-size: 4rem;
}

.eu-text {
    font-weight: 700;
    color: var(--text-dark);
}

.eu-subtext {
    font-size: 14px;
    color: var(--text-gray);
    font-weight: 500;
}

.contact {
    background: var(--bg-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary);
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.contact-label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
}

.contact-item a {
    color: var(--primary);
    font-weight: 500;
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-success {
    padding: 16px;
    background: #D1FAE5;
    border: 1px solid #10B981;
    border-radius: var(--radius);
    color: #065F46;
    text-align: center;
}

.contact-form .btn {
    align-self: flex-start;
}

.footer {
    background: var(--text-dark);
    color: white;
    padding: 48px 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

.footer-logo img {
    height: 40px;
}

.footer-links {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

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

    .innovation-card {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .innovation-badge {
        flex-direction: row;
        justify-content: center;
        gap: 16px;
    }
}

@media (max-width: 768px) {
    .eu-logo {
        right: 16px;
    }

    .eu-logo img {
        height: 150px;
    }

    .nav-container {
        padding-right: 24px;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        padding-right: 180px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .eu-logo img {
        height: 150px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        color: var(--text-dark);
        font-size: 16px;
    }

    .lang-switch {
        color: var(--text-gray);
    }

    .hero {
        padding: 100px 24px 60px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-logo {
        max-width: 280px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .innovation-stats {
        flex-direction: column;
        gap: 24px;
        align-items: center;
    }

    .section {
        padding: 64px 0;
    }
}

@media (max-width: 480px) {
    .about-stats {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .innovation-card {
        padding: 32px 24px;
    }

    .innovation-badge {
        flex-direction: column;
    }
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}