:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-secondary: #64748b;--color-secondary-hover: #475569;--color-danger: #dc2626;--color-danger-hover: #b91c1c;--color-success: #16a34a;--color-background: #f8fafc;--color-surface: #ffffff;--color-text: #1e293b;--color-text-muted: #64748b;--color-border: #e2e8f0;--color-border-focus: #2563eb;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.5;color:var(--color-text);background-color:var(--color-background);min-height:100vh}input,select,button{font-family:inherit;font-size:inherit}input,select{padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background-color:var(--color-surface);color:var(--color-text);transition:border-color .2s,box-shadow .2s}input:focus,select:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 3px #2563eb1a}input::placeholder{color:var(--color-text-muted)}input[type=number]{text-align:right}button{cursor:pointer;border:none;padding:10px 20px;border-radius:var(--radius-sm);font-weight:500;transition:background-color .2s,transform .1s}button:active{transform:scale(.98)}button:disabled{opacity:.5;cursor:not-allowed}h1{font-size:1.75rem;font-weight:700}h2{font-size:1.125rem;font-weight:600;color:var(--color-text);margin-bottom:16px}table{width:100%;border-collapse:collapse}th{text-align:left;font-weight:600;padding:12px 8px;background-color:var(--color-background);border-bottom:2px solid var(--color-border);font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-muted)}td{padding:8px;border-bottom:1px solid var(--color-border);vertical-align:middle}@media(max-width:768px){body{font-size:13px}}.app{max-width:1200px;margin:0 auto;padding:20px;min-height:100vh;display:flex;flex-direction:column}.app-header{text-align:center;margin-bottom:32px;padding-bottom:16px;border-bottom:2px solid var(--color-border)}.app-header h1{color:var(--color-primary)}.app-main{flex:1;display:flex;flex-direction:column;gap:24px}.app-footer{margin-top:32px;padding-top:16px;border-top:1px solid var(--color-border);text-align:center;color:var(--color-text-muted);font-size:.875rem}.form-section{background-color:var(--color-surface);padding:24px;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-weight:500;font-size:.875rem;color:var(--color-text-muted)}.form-group input,.form-group select{width:100%}.form-group-small{max-width:150px}.input-readonly{background-color:var(--color-background);color:var(--color-text-muted);cursor:not-allowed}.table-container{overflow-x:auto;margin-bottom:16px}.articles-table{min-width:700px;table-layout:fixed;width:100%}.articles-table th:nth-child(1),.articles-table td:nth-child(1){width:35%}.articles-table th:nth-child(2),.articles-table td:nth-child(2),.articles-table th:nth-child(3),.articles-table td:nth-child(3),.articles-table th:nth-child(4),.articles-table td:nth-child(4){width:10%}.articles-table th:nth-child(5),.articles-table td:nth-child(5){width:8%}.articles-table th:nth-child(6),.articles-table td:nth-child(6){width:12%;text-align:right}.articles-table th:nth-child(7),.articles-table td:nth-child(7){width:50px;text-align:center}.articles-table td.cell-designation{width:100%}.cell-designation{display:flex;flex-direction:column;gap:4px}.cell-designation input{width:100%;min-width:150px}.input-description{font-size:.85em;color:var(--color-text-muted)}.input-full{width:100%;min-width:100px}.input-number{width:100%;min-width:80px;text-align:right}.input-number-lg{min-width:100px}.input-select{width:100%;min-width:70px}.cell-total{text-align:right;font-weight:600;white-space:nowrap}.btn-remove{background-color:var(--color-danger);color:#fff;padding:8px;font-size:.875rem;display:flex;align-items:center;justify-content:center;min-width:32px;min-height:32px}.btn-remove:hover:not(:disabled){background-color:var(--color-danger-hover)}.btn-add{background-color:var(--color-primary);color:#fff}.btn-add:hover{background-color:var(--color-primary-hover)}.articles-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.produit-select-wrapper{flex:1;max-width:300px}.produit-select{width:100%;padding:10px 12px;border:1px solid var(--color-primary);border-radius:var(--radius-sm);background-color:var(--color-surface);color:var(--color-primary);font-weight:500;cursor:pointer}.produit-select:hover{background-color:#2563eb0d}.bottom-section{display:grid;grid-template-columns:1fr 1fr;gap:24px}@media(max-width:900px){.bottom-section{grid-template-columns:1fr}}.summary-section{background-color:var(--color-surface)}.summary-content{display:flex;flex-direction:column;gap:12px}.summary-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid var(--color-border)}.summary-row-tva{color:var(--color-text-muted);font-size:.875rem}.summary-row-total{border-bottom:none;border-top:2px solid var(--color-text);padding-top:12px;margin-top:4px;font-size:1.25rem;font-weight:700}.summary-value{font-weight:600;font-variant-numeric:tabular-nums}.actions-section{text-align:center}.actions-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}.btn-primary{background-color:var(--color-primary);color:#fff;padding:12px 32px;font-size:1rem}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-hover)}.btn-secondary{background-color:var(--color-secondary);color:#fff;padding:12px 32px;font-size:1rem}.btn-secondary:hover{background-color:var(--color-secondary-hover)}.validation-message{margin-top:16px;color:var(--color-text-muted);font-size:.875rem}.config-section{display:flex;flex-direction:column;gap:16px;margin-top:24px;padding-top:24px;border-top:2px dashed var(--color-border)}.collapsible-section{padding:0}.section-toggle{width:100%;display:flex;justify-content:space-between;align-items:center;padding:16px 24px;background:none;border:none;cursor:pointer;text-align:left}.section-toggle:hover{background-color:var(--color-background)}.section-toggle h2{margin:0;color:var(--color-text-muted)}.toggle-icon{font-size:.75rem;color:var(--color-text-muted);transition:transform .2s}.toggle-icon.open{transform:rotate(180deg)}.section-content{padding:0 24px 24px}.section-actions{display:flex;gap:8px;margin-bottom:16px}.btn-preset{padding:6px 16px;font-size:.75rem;font-weight:600;background-color:var(--color-secondary);color:#fff;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:background-color .2s}.btn-preset:hover{background-color:var(--color-secondary-hover)}.form-group-logo{grid-column:1 / -1}.logo-upload{display:flex;align-items:flex-start}.logo-preview{display:flex;flex-direction:column;align-items:center;gap:8px}.logo-preview img{max-width:150px;max-height:100px;object-fit:contain;border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:8px;background-color:var(--color-background)}.btn-remove-logo{background-color:var(--color-danger);color:#fff;padding:6px 16px;font-size:.75rem}.btn-remove-logo:hover{background-color:var(--color-danger-hover)}.logo-placeholder{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.logo-input{display:none}.logo-label{display:inline-block;padding:10px 20px;background-color:var(--color-primary);color:#fff;border-radius:var(--radius-sm);cursor:pointer;font-weight:500;transition:background-color .2s}.logo-label:hover{background-color:var(--color-primary-hover)}.logo-hint{font-size:.75rem;color:var(--color-text-muted)}.produits-list{display:flex;flex-direction:column;gap:16px;margin-bottom:16px}.produit-item{display:flex;gap:12px;align-items:flex-start;padding:16px;background-color:var(--color-background);border-radius:var(--radius-md)}.produit-fields{flex:1;display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;align-items:end}.produit-item .form-group{margin:0}.produit-item .form-group-small{max-width:none}.prix-ht-display{display:block;padding:8px 12px;background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-weight:600;color:var(--color-text)}.empty-message{color:var(--color-text-muted);text-align:center;padding:24px;font-style:italic}.produits-actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center}.btn-small{padding:8px 16px;font-size:.875rem}@media(max-width:768px){.app{padding:12px}.form-section{padding:16px}.form-grid{grid-template-columns:1fr}.form-group-small{max-width:none}.actions-buttons{flex-direction:column}.btn-primary,.btn-secondary{width:100%}.articles-actions{flex-direction:column;align-items:stretch}.produit-select-wrapper{max-width:none}.produit-fields{grid-template-columns:1fr}.section-toggle{padding:12px 16px}.section-content{padding:0 16px 16px}}