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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f5f5;
    color: #333;
}

/* Navigation */
nav {
    background: #2c5f2d;
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
    padding: 8px 12px;
    border-radius: 5px;
}

.nav-links a:hover {
    background: #1e3a1e;
}

/* Conteneur principal */
.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
}

/* Titres */
h2 {
    color: #2c5f2d;
    margin: 20px 0;
    border-bottom: 2px solid #2c5f2d;
    padding-bottom: 10px;
}

h3 {
    margin: 15px 0 10px 0;
    color: #2c5f2d;
}

/* Grille des statistiques */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-card h3 {
    color: #666;
    font-size: 14px;
    margin-bottom: 10px;
}

.stat-number {
    font-size: 28px;
    font-weight: bold;
    color: #2c5f2d;
}

.profit .stat-number {
    color: #27ae60;
}

.loss .stat-number {
    color: #e74c3c;
}

/* Alertes */
.alert {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 15px;
    margin: 20px 0;
    border-radius: 5px;
}

.alert ul {
    margin-left: 20px;
    margin-top: 10px;
}

.alert li {
    margin: 5px 0;
}

/* Tableaux */
table {
    width: 100%;
    background: white;
    border-collapse: collapse;
    margin: 20px 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background: #2c5f2d;
    color: white;
}

tr:hover {
    background: #f5f5f5;
}

/* Boutons */
.btn, button[type="submit"] {
    display: inline-block;
    padding: 10px 20px;
    background: #2c5f2d;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.btn:hover, button[type="submit"]:hover {
    background: #1e3a1e;
}

.btn-danger {
    background: #e74c3c;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-small {
    padding: 5px 10px;
    font-size: 12px;
}

/* Formulaires */
form {
    background: white;
    padding: 25px;
    border-radius: 10px;
    margin: 20px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

form input, form select, form textarea {
    width: 100%;
    padding: 10px;
    margin: 10px 0 15px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

form label {
    font-weight: bold;
}

/* Actions */
.actions {
    margin: 20px 0;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    background: #2c3e2f;
    color: white;
    margin-top: 40px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 10px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    table, thead, tbody, th, td, tr {
        display: block;
    }
    
    th {
        display: none;
    }
    
    td {
        border: none;
        position: relative;
        padding-left: 50%;
    }
    
    td:before {
        position: absolute;
        left: 10px;
        width: 45%;
        font-weight: bold;
    }
}