:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --bg-color: #f3f4f6;
    --surface: #ffffff;
    --surface-alt: #f8fafc;
    --text: #1f2937;
    --border: #e5e7eb;
}

body {
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}

main {
    background-color: var(--surface);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    max-width: 650px;
    width: 100%;
}

h1 { text-align: center; color: var(--primary); margin-top: 0; margin-bottom: 25px;}
h3 { font-size: 14px; text-transform: uppercase; color: #64748b; margin: 0 0 10px 0; letter-spacing: 0.5px; }

/* Blocs de niveaux */
.level-block {
    background-color: var(--surface-alt);
    border: 1px solid var(--border);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
}

/* Boutons de sélection (Tabs) */
.tab-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tab-group button {
    flex: 1;
    background-color: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 10px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
}
.tab-group button:hover { border-color: var(--primary); }
.tab-group button.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Sous-menu spécifique au QR Code */
#qr-data-tabs { margin-top: 15px; border-top: 1px dashed var(--border); padding-top: 15px; }
#qr-data-tabs .tab-group button { font-size: 13px; padding: 8px; }

/* Formulaires */
label { display: block; margin-top: 10px; font-weight: 500; font-size: 14px; }
input[type="text"], input[type="tel"], input[type="email"], input[type="number"], 
input[type="datetime-local"], select, textarea, input[type="file"] {
    width: 100%; padding: 10px; margin-top: 5px;
    border: 1px solid var(--border); border-radius: 6px;
    box-sizing: border-box; font-family: inherit; font-size: 14px;
}

/* Zone d'erreur bwip-js */
#error-msg {
    display: none; background-color: #fee2e2; color: #b91c1c;
    padding: 10px; border-radius: 6px; margin-top: 10px; font-size: 14px; text-align: center;
}

/* Personnalisation */
.custom-zone { display: flex; gap: 15px; align-items: flex-end; }
.color-group { display: flex; gap: 15px; }
input[type="color"] { cursor: pointer; border: none; padding: 0; width: 40px; height: 35px; border-radius: 4px; }
.btn-danger { background-color: #ef4444; color: white; border: none; padding: 10px; border-radius: 6px; cursor: pointer; }

/* Boutons principaux */
.btn-main { background-color: var(--primary); color: white; border: none; padding: 12px; border-radius: 6px; cursor: pointer; font-size: 16px; width: 100%; font-weight: bold; margin-top: 15px; }
.btn-success { background-color: #10b981; color: white; border: none; padding: 8px 12px; border-radius: 6px; cursor: pointer; }

/* Loader et Résultats */
.loader { border: 4px solid var(--border); border-top: 4px solid var(--primary); border-radius: 50%; width: 30px; height: 30px; animation: spin 1s linear infinite; margin: 20px auto; display: none; }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

#result-container { margin-top: 25px; text-align: center; }
#single-result canvas { border: 1px solid var(--border); border-radius: 8px; margin-bottom: 15px; background: white; max-width: 100%; }
.download-actions { display: flex; justify-content: center; gap: 10px; }

/* Grille Batch */
#batch-result { display: flex; flex-wrap: wrap; gap: 15px; justify-content: center; }
.batch-item { background: var(--surface-alt); border: 1px solid var(--border); padding: 10px; border-radius: 8px; display: flex; flex-direction: column; align-items: center; width: 150px; }
.batch-item canvas { max-width: 130px; background: white; margin-bottom: 10px; }
.batch-item span { font-size: 12px; width: 100%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 10px; }

/* Historique */
#history-section ul { list-style: none; padding: 0; margin: 0; }
#history-section li { background: var(--surface-alt); padding: 10px; border-radius: 6px; margin-bottom: 5px; font-size: 14px; cursor: pointer; border: 1px solid var(--border); }
#history-section li:hover { border-color: var(--primary); }
/* Espacement pour les boutons de téléchargement en lot */
#batch-actions {
    display: flex;
    gap: 15px; /* Ajustez cette valeur pour modifier l'espace entre les boutons */
    margin-bottom: 20px; /* Ajoute un peu d'espace avant la grille des codes */
}

/* On s'assure que les boutons prennent chacun la moitié de l'espace disponible */
#batch-actions .btn-main {
    flex: 1; 
}

/* Boutons principaux */
.btn-danger { background-color: #ef4444; color: white; border: none; padding: 10px; border-radius: 6px; cursor: pointer; }
.btn-secondary { background-color: #e5e7eb; color: var(--text); border: 1px solid var(--border); padding: 8px 12px; border-radius: 6px; cursor: pointer; height: 35px; transition: background-color 0.2s;} /* NOUVELLE LIGNE */
.btn-secondary:hover { background-color: #d1d5db; } /* NOUVELLE LIGNE */