:root {
    --dark-navy: #0A192F;
    --light-navy: #112240;
    --lightest-navy: #233554;
    --slate: #8892b0;
    --light-slate: #a8b2d1;
    --lightest-slate: #ccd6f6;
    --white: #e6f1ff;
    --green: #64FFDA;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--dark-navy);
    color: var(--light-slate);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
}

a {
    color: var(--green);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--white);
}

ul {
    list-style: none;
}

.header {
    background-color: rgba(10, 25, 47, 0.85);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 100;
    transition: top 0.3s;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1300px;
    margin: 0 auto;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--green);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.nav-list {
    display: flex;
    align-items: center;
}

.nav-item {
    margin-left: 2rem;
}

.nav-link {
    color: var(--lightest-slate);
    font-size: 1rem;
}

.lang-toggle-btn {
    background-color: transparent;
    border: 1px solid var(--green);
    color: var(--green);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

.lang-toggle-btn:hover {
    background-color: rgba(100, 255, 218, 0.1);
}

main {
    padding-top: 80px; /* Adjust based on header height */
    max-width: 1100px;
    margin: 0 auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

.hero {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 0;
}

.hero-title {
    font-size: 3.5rem;
    color: var(--lightest-slate);
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--slate);
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.6rem;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
}

.btn-primary {
    background-color: var(--green);
    color: var(--dark-navy);
    border: 1px solid var(--green);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--green);
}

.section-container {
    padding: 4rem 0;
}

.section-title {
    font-size: 2.5rem;
    color: var(--lightest-slate);
    text-align: center;
    margin-bottom: 3rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.card {
    background-color: var(--light-navy);
    padding: 2rem;
    border-radius: 4px;
    border-left: 3px solid var(--green);
}

.card h3 {
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.footer {
    background-color: var(--light-navy);
    color: var(--slate);
    padding: 3rem 1rem 1rem;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding-bottom: 2rem;
}

.footer-col h4 {
    font-size: 1.2rem;
    color: var(--lightest-slate);
    margin-bottom: 1rem;
}

.footer-col p, .footer-col li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--lightest-navy);
}

/* Content Page Specifics */
.content-section {
    background-color: var(--light-navy);
    padding: 2rem 2.5rem;
    border-radius: 4px;
}

.content-section h2 {
    color: var(--lightest-slate);
    font-size: 1.8rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--lightest-navy);
    padding-bottom: 0.5rem;
}

.content-section h3 {
    color: var(--light-slate);
    font-size: 1.3rem;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
}

.content-section p, .content-section li {
    color: var(--slate);
    margin-bottom: 1rem;
}

.content-section ul {
    list-style: disc;
    padding-left: 20px;
}

.content-section strong {
    color: var(--light-slate);
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none; /* Simple hide for now, can be replaced with a mobile menu */
    }

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

    .section-title {
        font-size: 2rem;
    }
}