:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --text-color: #333;
    --bg-color: #f4f4f9;
}

body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background-color: var(--primary-color);
    color: white;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
}

.logo {
    font-size: 2rem;
    font-weight: bold;
    text-align: center;
    margin-bottom: 2rem;
    color: white;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

nav ul li {
    margin: 1rem 0;
}

nav ul li a {
    color: white;
    text-decoration: none;
    display: block;
    padding: 0.5rem;
    border-radius: 5px;
    transition: background-color 0.3s;
}

nav ul li a:hover, nav ul li a.active {
    background-color: var(--secondary-color);
}

.lang-switcher {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.lang-switcher button {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: 5px;
    cursor: pointer;
}

main {
    flex: 1;
    padding: 2rem;
    margin-left: 250px;
}

.intro-section {
    max-width: 800px;
    margin: 0 auto;
}

.definition {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-top: 2rem;
}

.definition h2 {
    color: var(--primary-color);
    margin-top: 1.5rem;
}

.definition ul {
    padding-right: 20px;
}

.definition a {
    color: var(--accent-color);
    text-decoration: none;
}

.definition a:hover {
    text-decoration: underline;
}

[data-lang] {
    transition: all 0.3s ease;
}

/* للغة الإنجليزية والفرنسية */
[lang="en"] body, [lang="fr"] body {
    direction: ltr;
    text-align: left;
}

[lang="en"] main, [lang="fr"] main {
    margin-left: 0;
    margin-right: 250px;
}

[lang="en"] .sidebar, [lang="fr"] .sidebar {
    right: 0;
    left: auto;
}

[lang="en"] .definition ul, [lang="fr"] .definition ul {
    padding-right: 0;
    padding-left: 20px;
}