/* --- Global Styles & Variables --- */
:root {
    --primary-color: #0a2540;
    --secondary-color: #007bff;
    --accent-color: #00d4ff;
    --text-color: #333;
    --bg-color: #f8f9fa;
    --white: #ffffff;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
body {
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}
a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: var(--accent-color);
}
h1, h2, h3 {
    color: var(--primary-color);
    font-weight: 700;
}
img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

/* --- Header & Navigation --- */
.header {
    background-color: var(--white);
    box-shadow: var(--box-shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}
.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}
.nav-menu ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
}
.nav-menu li {
    margin-left: 25px;
}
.nav-menu a {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1rem;
}
.lang-switcher {
    margin-left: 30px;
    font-size: 0.9rem;
}
.lang-switcher a {
    margin: 0 5px;
    text-transform: uppercase;
    font-weight: bold;
}
.lang-switcher a.active {
    color: var(--accent-color);
    text-decoration: underline;
}

/* --- Main Content --- */
.main-content {
    padding: 60px 0;
}
.main-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}
.main-content .lead {
    font-size: 1.25rem;
    color: #555;
    margin-bottom: 40px;
}

/* --- Blog Post List --- */
.post-item {
    background: var(--white);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 30px;
}
.post-item h3 {
    margin-top: 0;
}

/* --- Footer --- */
.footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 40px 0;
    margin-top: 60px;
    text-align: center;
}
.footer a {
    color: var(--accent-color);
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
    }
    .nav-menu {
        margin-top: 15px;
    }
    .main-content h1 {
        font-size: 2rem;
    }
}