:root {
    --primary-color: #2c3e50;
    --accent-color: #3498db;
    --text-color: #333;
    --bg-color: #f4f4f9;
    --card-bg: #ffffff;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    margin: 0;
    padding: 0;
}

.article-container {
    max-width: 900px;
    margin: 40px auto;
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.back-nav {
    margin-bottom: 20px;
}

.btn-back {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    transition: color 0.3s;
}

.btn-back:hover {
    color: var(--accent-color);
}

.project-section {
    margin-bottom: 30px;
}

h1 {
    color: var(--primary-color);
    font-size: 2.2rem;
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 20px;
}

h2 {
    color: var(--primary-color);
    margin-top: 20px;
    border-left: 5px solid var(--accent-color);
    padding-left: 15px;
}

h3 {
    color: #555;
    margin-top: 15px;
}

.highlight-box {
    background-color: #e8f4fc;
    border-left: 4px solid var(--accent-color);
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 5px 5px 0;
}

.btn-projet {
    display: inline-block;
    margin-bottom: 20px;
    text-decoration: none;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    padding: 8px 15px;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn-projet:hover {
    background-color: rgba(52, 152, 219, 0.1);
}

/* Groupe de boutons côte à côte */
.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0;
}

/* Bouton GitHub */
.btn-github {
    display: inline-block;
    text-decoration: none;
    color: #fff;
    background-color: #24292e;
    padding: 8px 15px;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn-github:hover {
    background-color: #444d56;
}

/* Bouton téléchargement APK */
.btn-apk {
    display: inline-block;
    text-decoration: none;
    color: #fff;
    background-color: #27ae60;
    padding: 8px 15px;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn-apk:hover {
    background-color: #1e8449;
}

/* Tableau des comptes de démo */
.comptes-box {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 16px 20px;
    margin-top: 20px;
}

.comptes-box h4 {
    margin: 0 0 12px 0;
    color: var(--primary-color);
}

.comptes-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.comptes-table th {
    background-color: var(--primary-color);
    color: #fff;
    padding: 8px 12px;
    text-align: left;
}

.comptes-table td {
    padding: 7px 12px;
    border-bottom: 1px solid #dee2e6;
}

.comptes-table tr:last-child td {
    border-bottom: none;
}

.comptes-table tr:nth-child(even) td {
    background-color: #f1f1f1;
}