/* ========== STYLES GÉNÉRAUX ========== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f0f2f5;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 20px auto;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    padding: 24px;
}

/* ========== NAVIGATION ========== */
.navbar {
    background: white;
    border-bottom: 1px solid #e0e0e0;
    padding: 12px 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.navbar-brand {
    font-size: 1.4rem;
    font-weight: bold;
    color: #007bff;
    text-decoration: none;
}

.navbar-menu {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.navbar-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 6px 0;
    border-bottom: 2px solid transparent;
    transition: 0.2s;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    color: #007bff;
    border-bottom-color: #007bff;
}

/* ========== BOUTONS ========== */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: 0.2s;
}

.btn-primary {
    background: #007bff;
    color: white;
}
.btn-primary:hover {
    background: #0056b3;
}

.btn-success {
    background: #28a745;
    color: white;
}
.btn-success:hover {
    background: #1e7e34;
}

.btn-warning {
    background: #ffc107;
    color: #333;
}
.btn-warning:hover {
    background: #e0a800;
}

.btn-danger {
    background: #dc3545;
    color: white;
}
.btn-danger:hover {
    background: #c82333;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}
.btn-secondary:hover {
    background: #5a6268;
}

/* ========== TABLEAUX ========== */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}

th, td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
}

th {
    background: #f2f2f2;
    font-weight: 600;
}

/* ========== FORMULAIRES ========== */
input, select, textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
}

label {
    font-weight: 600;
    display: block;
    margin-bottom: 5px;
}

/* ========== MESSAGES ========== */
.error {
    background: #f8d7da;
    color: #721c24;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 16px;
}

.success {
    background: #d4edda;
    color: #155724;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 16px;
}

.info {
    background: #d1ecf1;
    color: #0c5460;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 16px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }
    .container {
        margin: 12px;
        padding: 16px;
    }
    table, thead, tbody, th, td, tr {
        display: block;
    }
    thead {
        display: none;
    }
    tr {
        border: 1px solid #ccc;
        margin-bottom: 12px;
        border-radius: 8px;
    }
    td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        border: none;
        border-bottom: 1px solid #eee;
        padding: 10px;
    }
    td:before {
        content: attr(data-label);
        font-weight: bold;
        width: 40%;
    }
}