/* Reset et variables */
:root {
    --primary: #2c3e50;
    --secondary: #3498db;
    --light: #ecf0f1;
    --dark: #2c3e50;
    --danger: #e74c3c;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: var(--light);
    color: var(--dark);
}

header {
    background-color: var(--primary);
    color: white;
    text-align: center;
    padding: 2rem 1rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 1rem 0;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 1rem;
    font-weight: bold;
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

section {
    margin-bottom: 3rem;
    padding: 1.5rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

section h2 {
    margin-bottom: 1rem;
    color: var(--primary);
    font-size: 1.8rem;
}

.articles {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.article {
    background-color: var(--light);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--secondary);
}

.article h3 {
    margin-bottom: 0.5rem;
    color: var(--secondary);
}

.article p {
    margin-bottom: 0.5rem;
}

.article a {
    color: var(--danger);
    text-decoration: none;
    font-weight: bold;
}

form {
    display: flex;
    flex-direction: column;
    max-width: 500px;
    margin: 0 auto;
}

input, textarea, button {
    margin-bottom: 1rem;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

button {
    background-color: var(--primary);
    color: white;
    cursor: pointer;
    border: none;
}

button:hover {
    background-color: var(--secondary);
}

footer {
    background-color: var(--primary);
    color: white;
    text-align: center;
    padding: 1rem;
    position: fixed;
    bottom: 0;
    width: 100%;
}