diff --git a/README.md b/README.md
index 5a341ba..55cef7f 100644
--- a/README.md
+++ b/README.md
@@ -83,6 +83,16 @@ obligatoire, lien facultatif, période en heure de Paris, priorité, groupes AD
- Aucun cache à purger : l'add-in interroge l'API à chaque nouveau message, la bannière apparaît et disparaît
donc à l'heure. Les messages déjà envoyés la conservent tant que l'image reste dans la bibliothèque.
+## Interface du back-office
+
+Aucune dépendance externe ni étape de compilation : tout est servi depuis `backend/public`.
+
+- `css/app.css` : feuille unique. Les couleurs, rayons et polices sont des variables en tête de fichier (`:root`).
+- `js/app.js` : notifications, boîte de confirmation (`data-confirm` sur un formulaire), zone de dépôt (`data-dropzone`),
+ copie (`data-copy`), bouton occupé (`data-busy`). Sans JavaScript, les formulaires restent utilisables.
+- `fonts/` : Atkinson Hyperlegible Next et Mono (licence OFL, fichier joint), hébergées localement.
+- `resources/views/components/icon.blade.php` : icônes Lucide (licence ISC) intégrées, ``.
+
## Syntaxe des templates
| Syntaxe | Effet |
diff --git a/backend/public/css/app.css b/backend/public/css/app.css
new file mode 100644
index 0000000..7d3a89b
--- /dev/null
+++ b/backend/public/css/app.css
@@ -0,0 +1,416 @@
+/*
+ * Back-office et portail « Signatures ».
+ * Feuille unique, sans préprocesseur ni CDN : modifiez les variables ci-dessous pour adapter les couleurs.
+ */
+
+@font-face {
+ font-family: "Atkinson Hyperlegible Next";
+ src: url("../fonts/atkinson-next.woff2") format("woff2");
+ font-weight: 200 800;
+ font-style: normal;
+ font-display: swap;
+}
+@font-face {
+ font-family: "Atkinson Hyperlegible Mono";
+ src: url("../fonts/atkinson-mono.woff2") format("woff2");
+ font-weight: 200 800;
+ font-style: normal;
+ font-display: swap;
+}
+
+:root {
+ /* Texte et surfaces */
+ --ink: #17242e;
+ --muted: #586a77;
+ --line: #dce3e8;
+ --line-strong: #bfcbd4;
+ --bg: #f2f5f7;
+ --surface: #ffffff;
+ --surface-2: #f7f9fa;
+
+ /* Bleu nuit de la barre latérale, bleu canal des actions, jaune soleil en repère */
+ --night: #0f3554;
+ --night-2: #1a4871;
+ --night-ink: #c9dbe9;
+ --accent: #16649a;
+ --accent-strong: #0f4f7d;
+ --accent-soft: #e4f0f8;
+ --sun: #f2b544;
+
+ /* États */
+ --ok: #1c7440;
+ --ok-soft: #e2f3e8;
+ --warn: #8a5300;
+ --warn-soft: #fff1d2;
+ --danger: #b3261e;
+ --danger-soft: #fdeceb;
+
+ --r-s: 6px;
+ --r-m: 10px;
+ --r-l: 14px;
+ --sidebar: 248px;
+ --focus: 0 0 0 3px rgba(22, 100, 154, .28);
+
+ --font: "Atkinson Hyperlegible Next", "Segoe UI", system-ui, sans-serif;
+ --mono: "Atkinson Hyperlegible Mono", Consolas, "Cascadia Mono", monospace;
+}
+
+*, *::before, *::after { box-sizing: border-box; }
+
+html { -webkit-text-size-adjust: 100%; }
+
+body {
+ margin: 0;
+ font-family: var(--font);
+ font-size: 15px;
+ line-height: 1.45;
+ color: var(--ink);
+ background: var(--bg);
+}
+
+h1 { font-size: 26px; line-height: 1.15; font-weight: 700; letter-spacing: -.01em; margin: 0; }
+h2 { font-size: 16px; line-height: 1.3; font-weight: 700; margin: 0 0 12px; }
+p { margin: 0 0 12px; }
+a { color: var(--accent); text-underline-offset: 2px; }
+a:hover { color: var(--accent-strong); }
+code { font-family: var(--mono); font-size: .9em; background: var(--surface-2); border: 1px solid var(--line); border-radius: 4px; padding: 0 4px; }
+strong { font-weight: 700; }
+
+:focus-visible { outline: none; box-shadow: var(--focus); border-radius: var(--r-s); }
+
+.icon { flex: none; vertical-align: -3px; }
+.muted { color: var(--muted); font-size: 13px; }
+.spacer { flex: 1; }
+.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
+.nowrap { white-space: nowrap; }
+.right { text-align: right; }
+[hidden] { display: none !important; }
+
+.skip { position: absolute; left: -9999px; }
+.skip:focus { left: 12px; top: 12px; z-index: 50; background: var(--surface); padding: 8px 12px; border-radius: var(--r-s); }
+
+/* ---------------------------------------------------------------- Structure */
+
+.app { min-height: 100vh; }
+.app--nav { display: grid; grid-template-columns: var(--sidebar) minmax(0, 1fr); }
+
+.sidebar {
+ position: sticky; top: 0; height: 100vh; overflow-y: auto;
+ display: flex; flex-direction: column;
+ background: var(--night); color: var(--night-ink);
+ padding: 20px 14px 14px;
+}
+
+.brand { display: block; color: #fff; text-decoration: none; padding: 0 8px 18px; }
+.brand:hover { color: #fff; }
+.brand-name { display: block; font-size: 21px; font-weight: 700; letter-spacing: -.01em; line-height: 1.1; }
+.brand-stroke { display: block; width: 104px; height: 12px; margin: 3px 0 6px -2px; color: var(--sun); }
+.brand-org { display: block; font-size: 12.5px; color: var(--night-ink); }
+
+.nav { display: flex; flex-direction: column; gap: 2px; }
+.nav-group { font-size: 12px; color: #9db6ca; margin: 16px 0 4px; padding: 0 10px; }
+.nav-link {
+ position: relative;
+ display: flex; align-items: center; gap: 10px;
+ padding: 8px 10px; border-radius: var(--r-s);
+ color: var(--night-ink); text-decoration: none; font-weight: 500;
+}
+.nav-link:hover { background: var(--night-2); color: #fff; }
+.nav-link.active { background: var(--night-2); color: #fff; font-weight: 700; }
+.nav-link.active::before { content: ""; position: absolute; left: -14px; top: 7px; bottom: 7px; width: 4px; border-radius: 0 4px 4px 0; background: var(--sun); }
+.nav-link:focus-visible { box-shadow: 0 0 0 3px rgba(242, 181, 68, .55); }
+
+.sidebar-foot { margin-top: auto; padding-top: 16px; display: flex; flex-direction: column; gap: 10px; }
+.user { display: flex; align-items: center; gap: 10px; padding: 10px 8px 2px; border-top: 1px solid rgba(255, 255, 255, .14); }
+.user-name { display: block; color: #fff; font-weight: 600; font-size: 14px; line-height: 1.2; overflow-wrap: anywhere; }
+.user-role { display: block; font-size: 12.5px; color: #9db6ca; }
+.user form { margin-left: auto; }
+.icon-btn {
+ display: inline-flex; align-items: center; justify-content: center;
+ width: 34px; height: 34px; border-radius: var(--r-s);
+ background: transparent; border: 0; color: inherit; cursor: pointer;
+}
+.icon-btn:hover { background: rgba(127, 148, 165, .22); }
+.sidebar .icon-btn { color: var(--night-ink); }
+.sidebar .icon-btn:hover { background: var(--night-2); color: #fff; }
+
+.avatar {
+ flex: none; display: inline-flex; align-items: center; justify-content: center;
+ width: 34px; height: 34px; border-radius: 50%;
+ background: var(--accent-soft); color: var(--accent-strong);
+ font-size: 12.5px; font-weight: 700;
+}
+.sidebar .avatar { background: var(--night-2); color: #fff; }
+
+.content { min-width: 0; }
+main { max-width: 1180px; margin: 0 auto; padding: 28px 28px 56px; }
+
+/* Portail agent : pas de barre latérale, simple bandeau */
+.topbar {
+ display: flex; align-items: center; gap: 12px;
+ background: var(--night); color: var(--night-ink); padding: 10px 20px;
+}
+.topbar .brand { padding: 0; }
+.topbar .brand-stroke { display: none; }
+.topbar .brand-name { font-size: 18px; }
+.topbar .user { border: 0; padding: 0; margin-left: auto; }
+.topbar .icon-btn { color: var(--night-ink); }
+.topbar .icon-btn:hover { background: var(--night-2); color: #fff; }
+.topbar .avatar { background: var(--night-2); color: #fff; }
+
+@media (max-width: 900px) {
+ .app--nav { display: block; }
+ .sidebar { position: static; height: auto; padding: 12px 12px 8px; }
+ .brand { padding: 0 6px 8px; }
+ .brand-stroke, .brand-org, .nav-group { display: none; }
+ .nav { flex-direction: row; overflow-x: auto; gap: 4px; padding-bottom: 6px; scrollbar-width: thin; }
+ .nav-link { white-space: nowrap; }
+ .nav-link.active::before { left: 10px; right: 10px; top: auto; bottom: 2px; width: auto; height: 3px; border-radius: 3px; }
+ .sidebar-foot { flex-direction: row; align-items: center; padding-top: 6px; }
+ .sidebar-foot .user { border: 0; padding: 0; margin-left: auto; }
+ .user-role { display: none; }
+ main { padding: 18px 14px 40px; }
+ h1 { font-size: 22px; }
+}
+
+/* ---------------------------------------------------------------- En-tête de page */
+
+.page-head { display: flex; align-items: flex-start; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
+.page-head > div:first-child { flex: 1; min-width: 240px; }
+.page-head .lead { color: var(--muted); max-width: 78ch; margin: 8px 0 0; }
+.page-title { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
+.page-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
+.back { display: inline-flex; align-items: center; gap: 4px; font-size: 13.5px; text-decoration: none; margin-bottom: 6px; color: var(--muted); }
+.back:hover { color: var(--accent-strong); }
+
+/* ---------------------------------------------------------------- Cartes */
+
+.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-m); padding: 20px; margin-bottom: 16px; }
+.card-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
+.card-head h2 { margin: 0; }
+.card--flush { padding: 0; overflow: hidden; }
+.card--flush > .card-head { padding: 16px 20px 0; }
+.card-foot { padding: 12px 20px; border-top: 1px solid var(--line); background: var(--surface-2); }
+.card--flush > .card-foot:last-child { border-radius: 0 0 var(--r-m) var(--r-m); }
+
+.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
+@media (max-width: 1000px) { .split { grid-template-columns: 1fr; } }
+
+/* Indicateurs du tableau de bord */
+.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin-bottom: 16px; }
+.tile {
+ display: flex; align-items: center; gap: 12px;
+ background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-m);
+ padding: 14px 16px; color: inherit; text-decoration: none;
+}
+a.tile:hover { border-color: var(--accent); color: inherit; }
+.tile-icon { flex: none; display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: var(--r-s); background: var(--accent-soft); color: var(--accent-strong); }
+.tile-value { display: block; font-size: 24px; font-weight: 700; line-height: 1.1; font-variant-numeric: tabular-nums; }
+.tile-label { display: block; color: var(--muted); font-size: 13px; }
+
+/* ---------------------------------------------------------------- Tableaux */
+
+.table-wrap { overflow-x: auto; }
+table.list { width: 100%; border-collapse: collapse; }
+table.list th, table.list td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
+table.list th { font-size: 12.5px; font-weight: 600; color: var(--muted); background: var(--surface-2); white-space: nowrap; }
+table.list th:first-child, table.list td:first-child { padding-left: 20px; }
+table.list th:last-child, table.list td:last-child { padding-right: 20px; }
+table.list tbody tr:last-child td { border-bottom: 0; }
+table.list tbody tr:hover td { background: #fafcfd; }
+table.list .num { font-variant-numeric: tabular-nums; }
+.cell-title { font-weight: 600; text-decoration: none; }
+.cell-title:hover { text-decoration: underline; }
+.cell-actions { text-align: right; white-space: nowrap; }
+.cell-actions > * { margin: 2px 0 2px 4px; }
+.btn.icon-only { padding: 6px 8px; }
+.person { display: flex; align-items: center; gap: 10px; }
+
+/* Fiche descriptive (libellé / valeur) */
+dl.facts { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 0; margin: 0; }
+dl.facts dt, dl.facts dd { padding: 9px 0; border-bottom: 1px solid var(--line); margin: 0; }
+dl.facts dt { color: var(--muted); font-size: 13px; padding-right: 20px; }
+dl.facts dt:last-of-type, dl.facts dd:last-of-type { border-bottom: 0; }
+
+.empty { text-align: center; padding: 36px 20px; color: var(--muted); }
+.empty .icon { color: var(--line-strong); margin-bottom: 8px; }
+.empty p { margin: 0 auto 12px; max-width: 46ch; }
+.empty p:last-child { margin-bottom: 0; }
+.empty strong { display: block; color: var(--ink); font-size: 16px; margin-bottom: 4px; }
+
+/* ---------------------------------------------------------------- Formulaires */
+
+label { display: block; font-weight: 600; font-size: 13.5px; margin: 14px 0 5px; }
+.card > label:first-child, .card > h2 + label { margin-top: 0; }
+.hint { color: var(--muted); font-size: 13px; margin: 5px 0 0; }
+
+input[type=text], input[type=number], input[type=search], input[type=url], input[type=datetime-local], select, textarea {
+ width: 100%; padding: 8px 10px;
+ border: 1px solid var(--line-strong); border-radius: var(--r-s);
+ font: inherit; color: var(--ink); background: var(--surface);
+}
+input:hover, select:hover, textarea:hover { border-color: #93a5b2; }
+input:focus-visible, select:focus-visible, textarea:focus-visible { border-color: var(--accent); box-shadow: var(--focus); }
+input::placeholder { color: #8797a3; }
+input.small { width: 96px; }
+select { padding-right: 28px; }
+textarea.code { font-family: var(--mono); font-size: 13px; line-height: 1.5; min-height: 280px; resize: vertical; tab-size: 2; background: var(--surface-2); }
+
+fieldset { border: 1px solid var(--line); border-radius: var(--r-s); margin: 14px 0 0; padding: 8px 14px 12px; min-width: 0; }
+fieldset.bare { border: 0; margin: 0; padding: 0; }
+legend { font-weight: 600; font-size: 13.5px; padding: 0 6px; }
+.scroll { max-height: 230px; overflow: auto; }
+
+.field-row { display: flex; gap: 12px; flex-wrap: wrap; }
+.field-row > * { flex: 1; min-width: 190px; }
+
+/* Champ de recherche avec icône */
+.search { position: relative; flex: 1; max-width: 380px; }
+.search .icon { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--muted); }
+.search input { padding-left: 34px; }
+
+/* Cases et boutons radio */
+label.check { display: flex; align-items: flex-start; gap: 8px; font-weight: 400; font-size: 14.5px; margin: 6px 0; cursor: pointer; }
+label.check input { flex: none; width: 17px; height: 17px; margin: 2px 0 0; accent-color: var(--accent); }
+
+/* Interrupteur : une case à cocher habillée */
+.switch { display: inline-flex; align-items: center; gap: 10px; font-weight: 400; font-size: 14.5px; margin: 0; cursor: pointer; }
+.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
+.switch-track { flex: none; position: relative; width: 38px; height: 22px; border-radius: 11px; background: var(--line-strong); transition: background .15s; }
+.switch-track::after { content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: transform .15s; }
+.switch input:checked + .switch-track { background: var(--accent); }
+.switch input:checked + .switch-track::after { transform: translateX(16px); }
+.switch input:focus-visible + .switch-track { box-shadow: var(--focus); }
+.switch input:disabled + .switch-track { opacity: .5; }
+
+/* Même interrupteur sous forme de bouton : il envoie son formulaire au clic (activation d'une campagne) */
+button.switch-btn { position: relative; width: 38px; height: 22px; padding: 0; border: 0; border-radius: 11px; background: var(--line-strong); cursor: pointer; vertical-align: middle; transition: background .15s; }
+button.switch-btn::after { content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: transform .15s; }
+button.switch-btn[aria-checked=true] { background: var(--accent); }
+button.switch-btn[aria-checked=true]::after { transform: translateX(16px); }
+
+/* Choix exclusifs présentés en liste de cartes (portail) */
+.option { display: flex; align-items: flex-start; gap: 10px; padding: 9px 12px; margin: 0; border: 1px solid var(--line); border-radius: var(--r-s); font-weight: 400; font-size: 14.5px; cursor: pointer; }
+.option + .option { margin-top: 6px; }
+fieldset > .option:first-of-type { margin-top: 4px; }
+.option input[type=radio] { flex: none; width: 17px; height: 17px; margin: 2px 0 0; accent-color: var(--accent); }
+.option > span { min-width: 0; }
+.option:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
+
+/* Zone de dépôt de fichier */
+.dropzone {
+ display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
+ min-height: 112px; padding: 16px; margin: 0;
+ border: 1.5px dashed var(--line-strong); border-radius: var(--r-m);
+ background: var(--surface-2); color: var(--muted);
+ font-weight: 400; font-size: 14px; text-align: center; cursor: pointer;
+}
+.dropzone:hover, .dropzone.is-over { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-strong); }
+.dropzone:focus-within { border-color: var(--accent); box-shadow: var(--focus); }
+.dropzone input[type=file] { position: absolute; opacity: 0; width: 1px; height: 1px; }
+.dropzone-name { color: var(--ink); font-weight: 600; overflow-wrap: anywhere; }
+.dropzone u { color: var(--accent); }
+html:not(.js) .dropzone input[type=file] { position: static; opacity: 1; width: auto; height: auto; }
+
+/* ---------------------------------------------------------------- Boutons */
+
+.btn {
+ display: inline-flex; align-items: center; justify-content: center; gap: 7px;
+ padding: 8px 14px; border-radius: var(--r-s);
+ border: 1px solid var(--accent); background: var(--accent); color: #fff;
+ font: inherit; font-size: 14.5px; font-weight: 600; line-height: 1.2;
+ text-decoration: none; cursor: pointer; white-space: nowrap;
+}
+.btn:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: #fff; }
+.btn.secondary { background: var(--surface); color: var(--accent-strong); border-color: var(--line-strong); }
+.btn.secondary:hover { background: var(--accent-soft); border-color: var(--accent); }
+.btn.danger { background: var(--surface); color: var(--danger); border-color: #e3b5b1; }
+.btn.danger:hover { background: var(--danger-soft); border-color: var(--danger); }
+.btn.danger.solid { background: var(--danger); color: #fff; border-color: var(--danger); }
+.btn.danger.solid:hover { background: #8f1d17; }
+.btn.small { padding: 5px 10px; font-size: 13.5px; }
+.btn:disabled, .btn[aria-disabled=true] { opacity: .5; cursor: default; pointer-events: none; }
+.btn .icon { vertical-align: 0; }
+.btn.is-busy .icon { animation: spin .8s linear infinite; }
+@keyframes spin { to { transform: rotate(360deg); } }
+
+button.link { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }
+form.inline { display: inline; }
+
+/* ---------------------------------------------------------------- Étiquettes et messages */
+
+.badge { display: inline-flex; align-items: center; gap: 6px; padding: 2px 9px; border-radius: 999px; font-size: 12.5px; font-weight: 600; background: var(--accent-soft); color: var(--accent-strong); white-space: nowrap; }
+.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
+.badge.ok { background: var(--ok-soft); color: var(--ok); }
+.badge.warn { background: var(--warn-soft); color: var(--warn); }
+.badge.off { background: #edf1f4; color: var(--muted); }
+.badge.plain::before { display: none; }
+
+.alert { display: flex; gap: 10px; align-items: flex-start; padding: 11px 14px; border-radius: var(--r-s); margin-bottom: 16px; border: 1px solid; }
+.alert .icon { margin-top: 1px; }
+.alert > div { min-width: 0; }
+.notice { background: var(--warn-soft); color: var(--warn); border-color: #ecd28f; }
+.errors { background: var(--danger-soft); color: var(--danger); border-color: #f0c0bb; }
+.flash { background: var(--ok-soft); color: var(--ok); border-color: #b7dfc5; }
+
+/* Notification de confirmation (message de session) */
+.toasts { position: fixed; bottom: 20px; right: 20px; z-index: 40; display: flex; flex-direction: column; gap: 8px; max-width: min(460px, calc(100vw - 32px)); }
+.toast {
+ display: flex; gap: 10px; align-items: flex-start;
+ background: var(--ink); color: #fff; padding: 12px 12px 12px 14px;
+ border-radius: var(--r-m); box-shadow: 0 10px 30px rgba(15, 53, 84, .28);
+ overflow-wrap: anywhere;
+}
+.toast > .icon { color: #7fd9a0; margin-top: 1px; }
+.toast .icon-btn { width: 26px; height: 26px; margin: -3px -3px 0 auto; color: #c9d5de; }
+.toast.is-leaving { opacity: 0; transform: translateY(6px); transition: opacity .2s, transform .2s; }
+html:not(.js) .toasts { position: static; max-width: none; margin-bottom: 16px; }
+html:not(.js) .toast .icon-btn { display: none; }
+
+/* Boîte de confirmation */
+dialog.dialog { border: 0; border-radius: var(--r-l); padding: 0; width: min(440px, calc(100vw - 32px)); color: var(--ink); box-shadow: 0 24px 60px rgba(15, 53, 84, .35); }
+dialog.dialog::backdrop { background: rgba(15, 35, 50, .45); }
+.dialog-body { padding: 22px 22px 6px; }
+.dialog-body h2 { font-size: 18px; margin-bottom: 8px; }
+.dialog-body p { color: var(--muted); margin: 0; }
+.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; padding: 18px 22px 20px; }
+
+/* ---------------------------------------------------------------- Écrans */
+
+/* Variables cliquables de l'éditeur de template */
+.chips { display: flex; flex-wrap: wrap; gap: 6px; }
+.chips button { background: var(--accent-soft); color: var(--accent-strong); border: 1px solid transparent; border-radius: var(--r-s); padding: 3px 9px; font: 13px var(--mono); cursor: pointer; }
+.chips button:hover { border-color: var(--accent); }
+
+iframe.sig { display: block; width: 100%; min-height: 270px; border: 1px solid var(--line); border-radius: var(--r-s); background: #fff; resize: vertical; }
+iframe.sig.short { min-height: 150px; }
+
+/* Bibliothèque d'images */
+.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
+.media { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-m); overflow: hidden; }
+.media-thumb {
+ display: flex; align-items: center; justify-content: center; height: 130px; padding: 12px;
+ /* damier : rend visibles les zones transparentes d'un logo */
+ background: #fff repeating-conic-gradient(#eef2f5 0% 25%, #fff 0% 50%) 0 0 / 16px 16px;
+ border-bottom: 1px solid var(--line);
+}
+.media-thumb img { max-width: 100%; max-height: 100%; }
+.media-body { padding: 12px 14px; flex: 1; }
+.media-name { font-weight: 600; overflow-wrap: anywhere; }
+.media-foot { display: flex; gap: 6px; padding: 10px 14px; border-top: 1px solid var(--line); background: var(--surface-2); }
+
+.thumb { display: block; max-width: 88px; max-height: 56px; border: 1px solid var(--line); border-radius: 4px; background: #fff; }
+.preview-img { display: block; max-width: 100%; max-height: 160px; margin-top: 10px; border: 1px solid var(--line); border-radius: var(--r-s); background: #fff; }
+
+/* Pagination */
+.pager { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
+
+/* État de la synchronisation */
+.sync { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
+.sync-dot { flex: none; width: 10px; height: 10px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px var(--ok-soft); }
+.sync-dot.warn { background: var(--warn); box-shadow: 0 0 0 4px var(--warn-soft); }
+.sync p { margin: 0; }
+
+@media (prefers-reduced-motion: reduce) {
+ *, *::before, *::after { animation: none !important; transition: none !important; }
+}
diff --git a/backend/public/fonts/OFL.txt b/backend/public/fonts/OFL.txt
new file mode 100644
index 0000000..9459440
--- /dev/null
+++ b/backend/public/fonts/OFL.txt
@@ -0,0 +1,93 @@
+Copyright 2020-2024 The Atkinson Hyperlegible Next Project Authors (https://github.com/googlefonts/atkinson-hyperlegible-next) AtkinsonHyperlegibleNext-Italic[wght].ttf: Copyright 2020-2024 The Atkinson Hyperlegible Next Project Authors (https://github.com/googlefonts/atkinson-hyperlegible-next)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded,
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.
diff --git a/backend/public/fonts/atkinson-mono.woff2 b/backend/public/fonts/atkinson-mono.woff2
new file mode 100644
index 0000000..f5c1081
Binary files /dev/null and b/backend/public/fonts/atkinson-mono.woff2 differ
diff --git a/backend/public/fonts/atkinson-next.woff2 b/backend/public/fonts/atkinson-next.woff2
new file mode 100644
index 0000000..a9ca4bd
Binary files /dev/null and b/backend/public/fonts/atkinson-next.woff2 differ
diff --git a/backend/public/js/app.js b/backend/public/js/app.js
new file mode 100644
index 0000000..dfabd9b
--- /dev/null
+++ b/backend/public/js/app.js
@@ -0,0 +1,111 @@
+/*
+ * Comportements communs du back-office (aucune dépendance).
+ * Chaque bloc s'active par un attribut data-* : sans JavaScript, les formulaires fonctionnent quand même.
+ */
+(() => {
+ 'use strict';
+
+ // --- Navigation en bandeau (petits écrans) : l'entrée active reste visible ---------------------
+ const current = document.querySelector('.nav .nav-link.active');
+ if (current && current.parentElement.scrollWidth > current.parentElement.clientWidth) {
+ current.parentElement.scrollLeft = current.offsetLeft - 16;
+ }
+
+ // --- Notifications : fermeture manuelle, et automatique après quelques secondes ----------------
+ const dismiss = (toast) => {
+ toast.classList.add('is-leaving');
+ setTimeout(() => toast.remove(), 220);
+ };
+ document.querySelectorAll('[data-toast]').forEach((toast) => {
+ let timer = setTimeout(() => dismiss(toast), 9000);
+ toast.addEventListener('mouseenter', () => clearTimeout(timer));
+ toast.addEventListener('mouseleave', () => { timer = setTimeout(() => dismiss(toast), 4000); });
+ toast.querySelector('[data-dismiss]')?.addEventListener('click', () => { clearTimeout(timer); dismiss(toast); });
+ });
+
+ // --- Confirmation :