diff --git a/app/admin/horaires/WeekEditor.tsx b/app/admin/horaires/WeekEditor.tsx
index 5be8671..7c0d3f0 100644
--- a/app/admin/horaires/WeekEditor.tsx
+++ b/app/admin/horaires/WeekEditor.tsx
@@ -6,7 +6,6 @@ import { MAX_SLOTS_PER_DAY } from '@/lib/schedule/validate';
 import {
   changedDays,
   DAY_NAMES_FR,
-  DAY_SHORT_FR,
   duplicateToOpenDays,
   validateWeek,
   type WeekDraft,
@@ -20,11 +19,11 @@ type Props = {
 };
 
 /**
- * The reference week, as one row per day.
+ * The reference week.
  *
- * Density is the point: all seven days have to be readable at a glance on a
- * phone held behind the counter, so the whole week fits on one screen and a
- * change can be checked without scrolling back up.
+ * Built for a phone held in one hand behind the counter: one card per day,
+ * native time inputs so the platform keyboard does the work, and the
+ * consequences of a change shown before it is saved rather than after.
  */
 export default function WeekEditor({ initial, canEdit }: Props) {
   const [week, setWeek] = useState<WeekDraft>(initial);
@@ -37,20 +36,15 @@ export default function WeekEditor({ initial, canEdit }: Props) {
   const pendingChanges = useMemo(() => changedDays(saved, week), [saved, week]);
   const blocked = Object.keys(errors).length > 0;
 
-  function touch() {
+  function update(dayOfWeek: number, patch: Partial<WeekDraft[number]>) {
     setMessage(null);
     setServerErrors({});
-  }
-
-  function update(dayOfWeek: number, patch: Partial<WeekDraft[number]>) {
-    touch();
     setWeek((current) =>
       current.map((day) => (day.dayOfWeek === dayOfWeek ? { ...day, ...patch } : day)),
     );
   }
 
   function updateSlot(dayOfWeek: number, index: number, field: 'open' | 'close', value: string) {
-    touch();
     setWeek((current) =>
       current.map((day) =>
         day.dayOfWeek === dayOfWeek
@@ -63,21 +57,36 @@ export default function WeekEditor({ initial, canEdit }: Props) {
           : day,
       ),
     );
+    setMessage(null);
+  }
+
+  function addSlot(dayOfWeek: number) {
+    update(dayOfWeek, {
+      slots: [
+        ...(week.find((day) => day.dayOfWeek === dayOfWeek)?.slots ?? []),
+        { open: '14:00', close: '18:30' },
+      ],
+    });
+  }
+
+  function removeSlot(dayOfWeek: number, index: number) {
+    const day = week.find((entry) => entry.dayOfWeek === dayOfWeek);
+    update(dayOfWeek, { slots: (day?.slots ?? []).filter((_, position) => position !== index) });
   }
 
   function submit() {
-    touch();
+    setMessage(null);
+    setServerErrors({});
     startTransition(async () => {
       const result = await saveWeek(week);
       if (result.ok) {
         setSaved(week);
-        const count = result.changed.length;
         setMessage({
           kind: 'ok',
           text:
-            count === 0
+            result.changed.length === 0
               ? 'Aucun changement à enregistrer.'
-              : `Enregistré — ${count} jour${count > 1 ? 's' : ''} modifié${count > 1 ? 's' : ''}.`,
+              : `Horaires enregistrés (${result.changed.length} jour${result.changed.length > 1 ? 's' : ''} modifié${result.changed.length > 1 ? 's' : ''}).`,
         });
       } else {
         setServerErrors(result.dayErrors ?? {});
@@ -87,166 +96,138 @@ export default function WeekEditor({ initial, canEdit }: Props) {
   }
 
   return (
-    <div className="mt-6">
+    <div className="mt-8">
       {!canEdit ? (
-        <p className="mb-4 rounded-[var(--radius-md)] border border-[var(--line-strong)] bg-[var(--surface-muted)] px-3 py-2 text-sm text-[var(--ink-muted)]">
-          Compte en lecture seule&nbsp;: consultation uniquement.
+        <p className="mb-6 rounded-[var(--radius-md)] border border-[var(--line-strong)] bg-[var(--surface-muted)] px-4 py-3 text-sm text-[var(--ink-muted)]">
+          Ce compte est en lecture seule&nbsp;: les horaires sont consultables mais pas modifiables.
         </p>
       ) : null}
 
-      <div className="overflow-hidden rounded-[var(--radius-md)] border border-[var(--line)] bg-[var(--surface)]">
-        {week.map((day, position) => {
-          const dayErrors = [
-            ...(errors[day.dayOfWeek] ?? []),
-            ...(serverErrors[day.dayOfWeek] ?? []),
-          ];
+      <div className="space-y-3">
+        {week.map((day) => {
+          const dayErrors = [...(errors[day.dayOfWeek] ?? []), ...(serverErrors[day.dayOfWeek] ?? [])];
           const isChanged = pendingChanges.includes(day.dayOfWeek);
-          const fullName = DAY_NAMES_FR[day.dayOfWeek] ?? '';
 
           return (
-            <div
+            <section
               key={day.dayOfWeek}
-              className={`${position > 0 ? 'border-t border-[var(--line)]' : ''} ${
-                dayErrors.length > 0 ? 'bg-[var(--danger-tint)]' : ''
+              className={`rounded-[var(--radius-md)] border bg-[var(--surface)] p-4 ${
+                dayErrors.length > 0 ? 'border-[var(--danger)]' : 'border-[var(--line)]'
               }`}
             >
-              <div className="flex flex-wrap items-center gap-x-3 gap-y-2 px-3 py-2">
-                <span
-                  className={`w-9 shrink-0 text-sm font-medium tabular-nums ${
-                    day.isClosed ? 'text-[var(--ink-muted)]' : ''
-                  }`}
-                >
-                  <span aria-hidden>{DAY_SHORT_FR[day.dayOfWeek]}</span>
-                  <span className="sr-only">{fullName}</span>
-                </span>
+              <div className="flex flex-wrap items-center gap-3">
+                <h2 className="min-w-28 text-base font-medium">{DAY_NAMES_FR[day.dayOfWeek]}</h2>
 
-                <input
-                  type="checkbox"
-                  role="switch"
-                  aria-label={`Ouvert le ${fullName.toLowerCase()}`}
-                  className="size-4 shrink-0 accent-[var(--accent)]"
-                  checked={!day.isClosed}
-                  disabled={!canEdit}
-                  onChange={(event) =>
-                    update(day.dayOfWeek, {
-                      isClosed: !event.target.checked,
-                      slots:
-                        event.target.checked && day.slots.length === 0
-                          ? [{ open: '10:00', close: '18:30' }]
-                          : day.slots,
-                    })
-                  }
-                />
-
-                {day.isClosed ? (
-                  <span className="text-sm text-[var(--ink-muted)]">Fermé</span>
-                ) : (
-                  <div className="flex flex-wrap items-center gap-x-2 gap-y-1">
-                    {day.slots.map((slot, index) => (
-                      <span key={index} className="flex items-center gap-1">
-                        <input
-                          type="time"
-                          aria-label={`${fullName} — ouverture ${index + 1}`}
-                          value={slot.open}
-                          disabled={!canEdit}
-                          onChange={(event) =>
-                            updateSlot(day.dayOfWeek, index, 'open', event.target.value)
-                          }
-                          className="rounded-[var(--radius-sm)] border border-[var(--line-strong)] bg-[var(--surface)] px-1.5 py-1 text-sm tabular-nums"
-                        />
-                        <span aria-hidden className="text-[var(--ink-muted)]">
-                          –
-                        </span>
-                        <input
-                          type="time"
-                          aria-label={`${fullName} — fermeture ${index + 1}`}
-                          value={slot.close}
-                          disabled={!canEdit}
-                          onChange={(event) =>
-                            updateSlot(day.dayOfWeek, index, 'close', event.target.value)
-                          }
-                          className="rounded-[var(--radius-sm)] border border-[var(--line-strong)] bg-[var(--surface)] px-1.5 py-1 text-sm tabular-nums"
-                        />
-                        {canEdit && day.slots.length > 1 ? (
-                          <button
-                            type="button"
-                            title={`Retirer cette plage du ${fullName.toLowerCase()}`}
-                            aria-label={`Retirer la plage ${index + 1} du ${fullName.toLowerCase()}`}
-                            onClick={() =>
-                              update(day.dayOfWeek, {
-                                slots: day.slots.filter((_, at) => at !== index),
-                              })
-                            }
-                            className="rounded-[var(--radius-sm)] px-1 text-[var(--ink-muted)] hover:text-[var(--danger)]"
-                          >
-                            ×
-                          </button>
-                        ) : null}
-                      </span>
-                    ))}
-                  </div>
-                )}
-
-                {canEdit && !day.isClosed ? (
-                  <span className="ml-auto flex shrink-0 items-center gap-1">
-                    {day.slots.length < MAX_SLOTS_PER_DAY ? (
-                      <button
-                        type="button"
-                        title="Ajouter une plage (pause de midi)"
-                        aria-label={`Ajouter une plage le ${fullName.toLowerCase()}`}
-                        onClick={() =>
-                          update(day.dayOfWeek, {
-                            slots: [...day.slots, { open: '14:00', close: '18:30' }],
-                          })
-                        }
-                        className="rounded-[var(--radius-sm)] border border-[var(--line-strong)] px-2 py-0.5 text-sm text-[var(--ink-muted)] hover:bg-[var(--surface-muted)] hover:text-[var(--ink)]"
-                      >
-                        +&nbsp;plage
-                      </button>
-                    ) : null}
-                    <button
-                      type="button"
-                      title="Appliquer ces horaires aux autres jours ouverts"
-                      aria-label={`Appliquer les horaires du ${fullName.toLowerCase()} aux autres jours ouverts`}
-                      onClick={() => {
-                        touch();
-                        setWeek(duplicateToOpenDays(week, day.dayOfWeek));
-                      }}
-                      className="rounded-[var(--radius-sm)] border border-[var(--line-strong)] px-2 py-0.5 text-sm text-[var(--ink-muted)] hover:bg-[var(--surface-muted)] hover:text-[var(--ink)]"
-                    >
-                      copier
-                    </button>
-                  </span>
-                ) : null}
+                <label className="flex items-center gap-2 text-sm">
+                  <input
+                    type="checkbox"
+                    className="size-4 accent-[var(--accent)]"
+                    checked={!day.isClosed}
+                    disabled={!canEdit}
+                    onChange={(event) =>
+                      update(day.dayOfWeek, {
+                        isClosed: !event.target.checked,
+                        slots:
+                          event.target.checked && day.slots.length === 0
+                            ? [{ open: '10:00', close: '18:30' }]
+                            : day.slots,
+                      })
+                    }
+                  />
+                  Ouvert
+                </label>
 
                 {isChanged ? (
-                  <span
-                    aria-label="modifié"
-                    title="Modifié, pas encore enregistré"
-                    className="size-1.5 shrink-0 rounded-full bg-[var(--accent)]"
-                  />
+                  <span className="rounded-[var(--radius-sm)] bg-[var(--accent-tint)] px-2 py-0.5 text-xs text-[var(--accent-ink)]">
+                    modifié
+                  </span>
                 ) : null}
               </div>
 
+              {day.isClosed ? (
+                <p className="mt-3 text-sm text-[var(--ink-muted)]">Fermé toute la journée.</p>
+              ) : (
+                <div className="mt-3 space-y-2">
+                  {day.slots.map((slot, index) => (
+                    <div key={index} className="flex flex-wrap items-center gap-2">
+                      <input
+                        type="time"
+                        aria-label={`${DAY_NAMES_FR[day.dayOfWeek]} — ouverture ${index + 1}`}
+                        value={slot.open}
+                        disabled={!canEdit}
+                        onChange={(event) =>
+                          updateSlot(day.dayOfWeek, index, 'open', event.target.value)
+                        }
+                        className="rounded-[var(--radius-sm)] border border-[var(--line-strong)] bg-[var(--surface)] px-2 py-1.5 text-base tabular-nums"
+                      />
+                      <span aria-hidden className="text-[var(--ink-muted)]">
+                        –
+                      </span>
+                      <input
+                        type="time"
+                        aria-label={`${DAY_NAMES_FR[day.dayOfWeek]} — fermeture ${index + 1}`}
+                        value={slot.close}
+                        disabled={!canEdit}
+                        onChange={(event) =>
+                          updateSlot(day.dayOfWeek, index, 'close', event.target.value)
+                        }
+                        className="rounded-[var(--radius-sm)] border border-[var(--line-strong)] bg-[var(--surface)] px-2 py-1.5 text-base tabular-nums"
+                      />
+                      {canEdit && day.slots.length > 1 ? (
+                        <button
+                          type="button"
+                          onClick={() => removeSlot(day.dayOfWeek, index)}
+                          className="rounded-[var(--radius-sm)] px-2 py-1.5 text-sm text-[var(--ink-muted)] underline-offset-2 hover:underline"
+                        >
+                          Retirer
+                        </button>
+                      ) : null}
+                    </div>
+                  ))}
+
+                  {canEdit && day.slots.length < MAX_SLOTS_PER_DAY ? (
+                    <button
+                      type="button"
+                      onClick={() => addSlot(day.dayOfWeek)}
+                      className="text-sm text-[var(--accent-ink)] underline-offset-2 hover:underline"
+                    >
+                      + Ajouter une plage (pause de midi)
+                    </button>
+                  ) : null}
+
+                  {canEdit ? (
+                    <div>
+                      <button
+                        type="button"
+                        onClick={() => setWeek(duplicateToOpenDays(week, day.dayOfWeek))}
+                        className="text-sm text-[var(--ink-muted)] underline-offset-2 hover:underline"
+                      >
+                        Dupliquer sur les autres jours ouverts
+                      </button>
+                    </div>
+                  ) : null}
+                </div>
+              )}
+
               {dayErrors.length > 0 ? (
-                <ul role="alert" className="px-3 pb-2 text-sm text-[var(--danger)]">
+                <ul role="alert" className="mt-3 space-y-1 text-sm text-[var(--danger)]">
                   {dayErrors.map((error) => (
                     <li key={error}>{error}</li>
                   ))}
                 </ul>
               ) : null}
-            </div>
+            </section>
           );
         })}
       </div>
 
       {canEdit ? (
-        <div className="sticky bottom-0 mt-4 flex flex-wrap items-center gap-x-3 gap-y-2 border-t border-[var(--line)] bg-[var(--canvas)] py-3">
+        <div className="sticky bottom-0 mt-6 flex flex-wrap items-center gap-3 border-t border-[var(--line)] bg-[var(--canvas)] py-4">
           <button
             type="button"
             onClick={submit}
             disabled={pending || blocked || pendingChanges.length === 0}
-            className="rounded-[var(--radius-md)] bg-[var(--accent)] px-4 py-2 font-medium text-[var(--on-accent)] transition-colors hover:bg-[var(--accent-hover)] disabled:cursor-not-allowed disabled:opacity-40"
+            className="rounded-[var(--radius-md)] bg-[var(--accent)] px-5 py-2.5 font-medium text-[var(--on-accent)] transition-colors hover:bg-[var(--accent-hover)] disabled:cursor-not-allowed disabled:opacity-40"
           >
             {pending ? 'Enregistrement…' : 'Enregistrer'}
           </button>
@@ -256,20 +237,23 @@ export default function WeekEditor({ initial, canEdit }: Props) {
               type="button"
               onClick={() => {
                 setWeek(saved);
-                touch();
+                setMessage(null);
+                setServerErrors({});
               }}
               className="text-sm text-[var(--ink-muted)] underline-offset-2 hover:underline"
             >
-              Annuler
+              Annuler les modifications
             </button>
           ) : null}
 
           <p className="text-sm text-[var(--ink-muted)]" aria-live="polite">
             {blocked
-              ? 'Corrigez les erreurs signalées.'
+              ? 'Corrigez les erreurs ci-dessus.'
               : pendingChanges.length === 0
                 ? 'Aucune modification.'
-                : `Sera modifié : ${pendingChanges.map((d) => DAY_SHORT_FR[d]).join(', ')}.`}
+                : `${pendingChanges.length} jour${pendingChanges.length > 1 ? 's' : ''} sera modifié : ${pendingChanges
+                    .map((dayOfWeek) => DAY_NAMES_FR[dayOfWeek])
+                    .join(', ')}.`}
           </p>
         </div>
       ) : null}
@@ -277,7 +261,7 @@ export default function WeekEditor({ initial, canEdit }: Props) {
       {message ? (
         <p
           role="status"
-          className={`mt-3 rounded-[var(--radius-md)] px-3 py-2 text-sm ${
+          className={`mt-4 rounded-[var(--radius-md)] px-4 py-3 text-sm ${
             message.kind === 'ok'
               ? 'bg-[var(--success-tint)] text-[var(--success)]'
               : 'bg-[var(--danger-tint)] text-[var(--danger)]'
diff --git a/app/admin/horaires/page.tsx b/app/admin/horaires/page.tsx
index 6f8269e..dae5c3e 100644
--- a/app/admin/horaires/page.tsx
+++ b/app/admin/horaires/page.tsx
@@ -22,11 +22,11 @@ export default async function HoursPage() {
   );
 
   return (
-    <main className="mx-auto max-w-3xl px-4 py-8">
+    <main className="mx-auto max-w-3xl px-4 py-10">
       <h1 className="text-2xl">Horaires fixes</h1>
-      <p className="mt-1 text-sm text-[var(--ink-muted)]">
-        Semaine de référence. Fermetures ponctuelles, vacances et jours fériés priment sur ces
-        horaires.
+      <p className="mt-2 max-w-prose text-[var(--ink-muted)]">
+        La semaine de référence. Les fermetures ponctuelles, les vacances et les jours fériés se
+        règlent ailleurs et priment sur ces horaires.
       </p>
 
       <WeekEditor initial={initial} canEdit={session?.user?.role === 'admin'} />
diff --git a/lib/schedule/week.ts b/lib/schedule/week.ts
index 8853355..857b613 100644
--- a/lib/schedule/week.ts
+++ b/lib/schedule/week.ts
@@ -12,17 +12,6 @@ import { validateSlots } from './validate';
 /** Monday first: how the week is read, and how the screen draws it. */
 export const WEEK_ORDER = [1, 2, 3, 4, 5, 6, 0] as const;
 
-/** Three letters, for the dense week table. */
-export const DAY_SHORT_FR: Record<number, string> = {
-  0: 'Dim',
-  1: 'Lun',
-  2: 'Mar',
-  3: 'Mer',
-  4: 'Jeu',
-  5: 'Ven',
-  6: 'Sam',
-};
-
 export const DAY_NAMES_FR: Record<number, string> = {
   0: 'Dimanche',
   1: 'Lundi',