diff --git a/backend/alembic/versions/0d7cc7e3efb9_add_vote_deadline_to_communes.py b/backend/alembic/versions/0d7cc7e3efb9_add_vote_deadline_to_communes.py
new file mode 100644
index 0000000..efb4816
--- /dev/null
+++ b/backend/alembic/versions/0d7cc7e3efb9_add_vote_deadline_to_communes.py
@@ -0,0 +1,30 @@
+"""add vote_deadline to communes
+
+Revision ID: 0d7cc7e3efb9
+Revises: 25f534648ea7
+Create Date: 2026-02-23 00:37:23.451137
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '0d7cc7e3efb9'
+down_revision: Union[str, None] = '25f534648ea7'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('communes', sa.Column('vote_deadline', sa.DateTime(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('communes', 'vote_deadline')
+    # ### end Alembic commands ###
diff --git a/backend/app/models/models.py b/backend/app/models/models.py
index b9b9438..a209f52 100644
--- a/backend/app/models/models.py
+++ b/backend/app/models/models.py
@@ -29,6 +29,7 @@ class Commune(Base):
     description = Column(Text, default="")
     is_active = Column(Boolean, default=True)
     created_at = Column(DateTime, default=datetime.utcnow)
+    vote_deadline = Column(DateTime, nullable=True)
 
     tariff_params = relationship("TariffParams", back_populates="commune", uselist=False)
     households = relationship("Household", back_populates="commune")
diff --git a/backend/app/routers/communes.py b/backend/app/routers/communes.py
index a4f3d53..302e117 100644
--- a/backend/app/routers/communes.py
+++ b/backend/app/routers/communes.py
@@ -67,6 +67,8 @@ async def update_commune(
         commune.description = data.description
     if data.is_active is not None:
         commune.is_active = data.is_active
+    if data.vote_deadline is not None:
+        commune.vote_deadline = data.vote_deadline
 
     await db.commit()
     await db.refresh(commune)
diff --git a/backend/app/schemas/schemas.py b/backend/app/schemas/schemas.py
index cce8571..c6a3509 100644
--- a/backend/app/schemas/schemas.py
+++ b/backend/app/schemas/schemas.py
@@ -35,6 +35,7 @@ class CommuneUpdate(BaseModel):
     name: str | None = None
     description: str | None = None
     is_active: bool | None = None
+    vote_deadline: datetime | None = None
 
 
 class CommuneOut(BaseModel):
@@ -44,6 +45,7 @@ class CommuneOut(BaseModel):
     description: str
     is_active: bool
     created_at: datetime
+    vote_deadline: datetime | None = None
 
     model_config = {"from_attributes": True}
 
diff --git a/frontend/app/components/charts/VoteOverlayChart.vue b/frontend/app/components/charts/VoteOverlayChart.vue
index 592c8dc..77cff19 100644
--- a/frontend/app/components/charts/VoteOverlayChart.vue
+++ b/frontend/app/components/charts/VoteOverlayChart.vue
@@ -19,14 +19,14 @@
 
       <!-- Vote curves (semi-transparent) -->
       <g v-for="(vote, i) in votes" :key="i">
-        <path :d="getVotePath(vote, 1)" fill="none" stroke="#3b82f6" stroke-width="1" opacity="0.3" />
-        <path :d="getVotePath(vote, 2)" fill="none" stroke="#ef4444" stroke-width="1" opacity="0.3" />
+        <path :d="getVotePath(vote, 1)" fill="none" stroke="#3b82f6" stroke-width="1.5" opacity="0.4" />
+        <path :d="getVotePath(vote, 2)" fill="none" stroke="#ef4444" stroke-width="1.5" opacity="0.4" />
       </g>
 
       <!-- Median curve (if available) -->
       <g v-if="medianVote">
-        <path :d="getVotePath(medianVote, 1)" fill="none" stroke="#1e40af" stroke-width="3" />
-        <path :d="getVotePath(medianVote, 2)" fill="none" stroke="#991b1b" stroke-width="3" />
+        <path :d="getVotePath(medianVote, 1)" fill="none" stroke="#1e40af" stroke-width="4" />
+        <path :d="getVotePath(medianVote, 2)" fill="none" stroke="#991b1b" stroke-width="4" />
       </g>
 
       <!-- Axis labels -->
@@ -108,5 +108,13 @@ onMounted(async () => {
 .overlay-chart svg {
   width: 100%;
   height: auto;
+  background: white;
+  border-radius: 8px;
+  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+}
+
+.overlay-chart svg path {
+  stroke-linecap: round;
+  stroke-linejoin: round;
 }
 </style>
diff --git a/frontend/app/pages/admin/communes/[slug]/index.vue b/frontend/app/pages/admin/communes/[slug]/index.vue
index 1df709e..aaeb1b8 100644
--- a/frontend/app/pages/admin/communes/[slug]/index.vue
+++ b/frontend/app/pages/admin/communes/[slug]/index.vue
@@ -29,6 +29,29 @@
       </NuxtLink>
     </div>
 
+    <!-- Vote deadline -->
+    <div class="card" style="margin-bottom: 2rem;">
+      <h3 style="margin-bottom: 1rem;">Parametres du vote</h3>
+      <div style="display: flex; gap: 1rem; align-items: flex-end; flex-wrap: wrap;">
+        <div>
+          <label style="display: block; font-size: 0.8rem; color: var(--color-text-muted); margin-bottom: 0.25rem;">
+            Date limite de vote
+          </label>
+          <input
+            v-model="voteDeadline"
+            type="datetime-local"
+            class="form-input"
+            style="width: 260px;"
+          />
+        </div>
+        <button class="btn btn-primary" @click="saveDeadline" :disabled="savingDeadline">
+          <span v-if="savingDeadline" class="spinner" style="width: 1rem; height: 1rem;"></span>
+          Enregistrer
+        </button>
+        <span v-if="deadlineSaved" style="color: #059669; font-size: 0.85rem;">Enregistre !</span>
+      </div>
+    </div>
+
     <!-- Stats -->
     <div v-if="stats" class="card" style="margin-bottom: 2rem;">
       <h3 style="margin-bottom: 1rem;">Statistiques foyers</h3>
@@ -145,6 +168,26 @@ const search = ref('')
 const page = ref(1)
 const perPage = 20
 
+// Vote deadline
+const voteDeadline = ref('')
+const savingDeadline = ref(false)
+const deadlineSaved = ref(false)
+
+async function saveDeadline() {
+  savingDeadline.value = true
+  deadlineSaved.value = false
+  try {
+    await api.put(`/communes/${slug}`, {
+      vote_deadline: voteDeadline.value ? new Date(voteDeadline.value).toISOString() : null,
+    })
+    deadlineSaved.value = true
+  } catch (e: any) {
+    alert(e.message || 'Erreur')
+  } finally {
+    savingDeadline.value = false
+  }
+}
+
 const filteredHouseholds = computed(() => {
   if (!search.value) return households.value
   const q = search.value.toLowerCase()
@@ -173,6 +216,10 @@ function statusBadge(status: string) {
 onMounted(async () => {
   try {
     commune.value = await api.get<any>(`/communes/${slug}`)
+    if (commune.value.vote_deadline) {
+      // Format for datetime-local input (YYYY-MM-DDTHH:mm)
+      voteDeadline.value = commune.value.vote_deadline.slice(0, 16)
+    }
   } catch (e: any) {
     return
   }
diff --git a/frontend/app/pages/commune/[slug]/index.vue b/frontend/app/pages/commune/[slug]/index.vue
index 258dba4..aae4e5b 100644
--- a/frontend/app/pages/commune/[slug]/index.vue
+++ b/frontend/app/pages/commune/[slug]/index.vue
@@ -1,5 +1,6 @@
 <template>
   <div v-if="commune">
+    <!-- ── 1. Header ── -->
     <div class="page-header">
       <NuxtLink to="/" style="color: var(--color-text-muted); font-size: 0.875rem;">&larr; Toutes les communes</NuxtLink>
       <h1>{{ commune.name }}</h1>
@@ -13,16 +14,9 @@
     </div>
 
     <template v-else-if="curveData">
-      <!-- CMS content (published by admin) -->
-      <div v-if="contentPages.length" style="margin-bottom: 1.5rem;">
-        <div v-for="page in contentPages" :key="page.slug" class="card" style="margin-bottom: 1rem;">
-          <h3 style="margin-bottom: 0.5rem;">{{ page.title }}</h3>
-          <div class="cms-body" v-html="renderMarkdown(page.body_markdown)"></div>
-        </div>
-      </div>
 
       <!-- ═══════════════════════════════════════════════════════
-           GRAPH 1: Interactive Bezier curve — Prix au m3
+           2. COURBE INTERACTIVE — Position dominante, pleine largeur
            ═══════════════════════════════════════════════════════ -->
       <div class="card" style="margin-bottom: 1.5rem;">
         <div style="display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 0.5rem;">
@@ -45,8 +39,8 @@
 
         <!-- Zoom controls -->
         <div class="zoom-bar">
-          <button class="btn btn-secondary btn-xs" @click="zoomPreset('tier1')" title="Zoom tier 1">Tier 1</button>
-          <button class="btn btn-secondary btn-xs" @click="zoomPreset('tier2')" title="Zoom tier 2">Tier 2</button>
+          <button class="btn btn-secondary btn-xs" @click="zoomPreset('tier1')" title="Zoom population">Population</button>
+          <button class="btn btn-secondary btn-xs" @click="zoomPreset('tier2')" title="Zoom cas exceptionnels">Cas exceptionnels</button>
           <button class="btn btn-secondary btn-xs" @click="zoomIn">+</button>
           <button class="btn btn-secondary btn-xs" @click="zoomOut">-</button>
           <button class="btn btn-secondary btn-xs" @click="zoomReset">Reset</button>
@@ -55,183 +49,236 @@
           </span>
         </div>
 
-        <div class="editor-layout">
-          <!-- SVG: Prix au m3 vs Volume (the Bezier curve) -->
-          <div class="chart-container">
-            <svg
-              ref="svgRef"
-              :viewBox="`0 0 ${W} ${H}`"
-              preserveAspectRatio="xMidYMid meet"
-              @mousemove="onMouseMove"
-              @mouseup="onMouseUp"
-              @mouseleave="onMouseUp"
-              @touchmove.prevent="onTouchMove"
-              @touchend="onMouseUp"
-              @wheel.prevent="onWheel"
-            >
-              <!-- Grid -->
-              <g>
-                <line v-for="v in gridVols" :key="'gv'+v"
-                  :x1="cx(v)" :y1="cy(0)" :x2="cx(v)" :y2="cy(zoomPriceMax)"
-                  stroke="#e2e8f0" stroke-width="0.5" />
-                <line v-for="p in gridPrices" :key="'gp'+p"
-                  :x1="cx(zoomVolMin)" :y1="cy(p)" :x2="cx(zoomVolMax)" :y2="cy(p)"
-                  stroke="#e2e8f0" stroke-width="0.5" />
-                <text v-for="v in gridVols" :key="'lv'+v"
-                  :x="cx(v)" :y="H - 2" text-anchor="middle" font-size="10" fill="#94a3b8">
-                  {{ v }}
-                </text>
-                <text v-for="p in gridPrices" :key="'lp'+p"
-                  :x="margin.left - 4" :y="cy(p) + 3" text-anchor="end" font-size="10" fill="#94a3b8">
-                  {{ p.toFixed(p < 1 ? 1 : 0) }}
-                </text>
-                <text :x="W / 2" :y="H - 0" text-anchor="middle" font-size="10" fill="#64748b">
-                  volume (m3)
-                </text>
-                <text :x="12" :y="margin.top - 4" font-size="10" fill="#64748b">
-                  EUR/m3
-                </text>
-              </g>
-
-              <!-- Outlier vote curves (semi-transparent) -->
-              <g v-if="showOutliers && outlierVotes.length">
-                <template v-for="(vote, i) in outlierVotes" :key="'ov'+i">
-                  <path :d="outlierPath(vote, 1)" fill="none" stroke="#93c5fd" stroke-width="1" opacity="0.25" />
-                  <path :d="outlierPath(vote, 2)" fill="none" stroke="#fca5a5" stroke-width="1" opacity="0.25" />
-                </template>
-              </g>
-
-              <!-- Tangent lines (control arms) -->
-              <line :x1="cx(cp.p1.x)" :y1="cy(cp.p1.y)" :x2="cx(cp.p2.x)" :y2="cy(cp.p2.y)"
-                stroke="#93c5fd" stroke-width="1" stroke-dasharray="4" />
-              <line :x1="cx(cp.p3.x)" :y1="cy(cp.p3.y)" :x2="cx(cp.p4.x)" :y2="cy(cp.p4.y)"
-                stroke="#93c5fd" stroke-width="1" stroke-dasharray="4" />
-              <line :x1="cx(cp.p4.x)" :y1="cy(cp.p4.y)" :x2="cx(cp.p5.x)" :y2="cy(cp.p5.y)"
-                stroke="#fca5a5" stroke-width="1" stroke-dasharray="4" />
-              <line :x1="cx(cp.p6.x)" :y1="cy(cp.p6.y)" :x2="cx(cp.p7.x)" :y2="cy(cp.p7.y)"
-                stroke="#fca5a5" stroke-width="1" stroke-dasharray="4" />
-
-              <!-- Bezier curve: tier 1 (blue, thicker = focus) -->
-              <path :d="tier1Path" fill="none" stroke="#2563eb" stroke-width="3" />
-              <!-- Bezier curve: tier 2 (red) -->
-              <path :d="tier2Path" fill="none" stroke="#dc2626" stroke-width="2" />
-
-              <!-- Inflection reference lines -->
-              <line :x1="cx(bp.vinf)" :y1="cy(zoomPriceMin)" :x2="cx(bp.vinf)" :y2="cy(localP0)"
-                stroke="#94a3b8" stroke-width="1" stroke-dasharray="4" />
-              <line :x1="cx(zoomVolMin)" :y1="cy(localP0)" :x2="cx(bp.vinf)" :y2="cy(localP0)"
-                stroke="#94a3b8" stroke-width="1" stroke-dasharray="4" />
-
-              <!-- p0 label -->
-              <text :x="cx(zoomVolMin) + 30" :y="cy(localP0) - 6" font-size="12" fill="#1e293b" font-weight="600">
-                p0 = {{ localP0.toFixed(2) }} EUR/m3
+        <!-- SVG: full-width, no side panel -->
+        <div class="chart-container">
+          <svg
+            ref="svgRef"
+            :viewBox="`0 0 ${W} ${H}`"
+            preserveAspectRatio="xMidYMid meet"
+            @mousemove="onMouseMove"
+            @mouseup="onMouseUp"
+            @mouseleave="onMouseUp"
+            @touchmove.prevent="onTouchMove"
+            @touchend="onMouseUp"
+            @wheel.prevent="onWheel"
+          >
+            <!-- Grid -->
+            <g>
+              <line v-for="v in gridVols" :key="'gv'+v"
+                :x1="cx(v)" :y1="cy(0)" :x2="cx(v)" :y2="cy(zoomPriceMax)"
+                stroke="#e2e8f0" stroke-width="0.5" />
+              <line v-for="p in gridPrices" :key="'gp'+p"
+                :x1="cx(zoomVolMin)" :y1="cy(p)" :x2="cx(zoomVolMax)" :y2="cy(p)"
+                stroke="#e2e8f0" stroke-width="0.5" />
+              <text v-for="v in gridVols" :key="'lv'+v"
+                :x="cx(v)" :y="H - 2" text-anchor="middle" font-size="12" fill="#64748b">
+                {{ v }}
               </text>
-
-              <!-- Draggable control points -->
-              <circle v-for="(pt, key) in dragPoints" :key="key"
-                :cx="cx(pt.x)" :cy="cy(pt.y)"
-                :r="dragging === key ? 9 : 7"
-                :fill="ptColors[key]" stroke="white" stroke-width="2"
-                style="cursor: grab;"
-                @mousedown.prevent="startDrag(key)"
-                @touchstart.prevent="startDrag(key)"
-              />
-              <text v-for="(pt, key) in dragPoints" :key="'l-'+key"
-                :x="cx(pt.x) + 10" :y="cy(pt.y) - 10"
-                font-size="11" :fill="ptColors[key]" font-weight="500">
-                {{ ptLabels[key] }}
+              <text v-for="p in gridPrices" :key="'lp'+p"
+                :x="margin.left - 4" :y="cy(p) + 3" text-anchor="end" font-size="12" fill="#64748b">
+                {{ p.toFixed(p < 1 ? 1 : 0) }}
               </text>
-            </svg>
+              <text :x="W / 2" :y="H - 0" text-anchor="middle" font-size="12" fill="#475569">
+                volume (m3)
+              </text>
+              <text :x="12" :y="margin.top - 4" font-size="12" fill="#475569">
+                EUR/m3
+              </text>
+            </g>
+
+            <!-- Outlier vote curves (semi-transparent) -->
+            <g v-if="showOutliers && outlierVotes.length">
+              <template v-for="(vote, i) in outlierVotes" :key="'ov'+i">
+                <path :d="outlierPath(vote, 1)" fill="none" stroke="#93c5fd" stroke-width="1" opacity="0.25" />
+                <path :d="outlierPath(vote, 2)" fill="none" stroke="#fca5a5" stroke-width="1" opacity="0.25" />
+              </template>
+            </g>
+
+            <!-- Tangent lines (control arms) -->
+            <line :x1="cx(cp.p1.x)" :y1="cy(cp.p1.y)" :x2="cx(cp.p2.x)" :y2="cy(cp.p2.y)"
+              stroke="#93c5fd" stroke-width="1" stroke-dasharray="4" />
+            <line :x1="cx(cp.p3.x)" :y1="cy(cp.p3.y)" :x2="cx(cp.p4.x)" :y2="cy(cp.p4.y)"
+              stroke="#93c5fd" stroke-width="1" stroke-dasharray="4" />
+            <line :x1="cx(cp.p4.x)" :y1="cy(cp.p4.y)" :x2="cx(cp.p5.x)" :y2="cy(cp.p5.y)"
+              stroke="#fca5a5" stroke-width="1" stroke-dasharray="4" />
+            <line :x1="cx(cp.p6.x)" :y1="cy(cp.p6.y)" :x2="cx(cp.p7.x)" :y2="cy(cp.p7.y)"
+              stroke="#fca5a5" stroke-width="1" stroke-dasharray="4" />
+
+            <!-- Bezier curve: population (blue, thicker = focus) -->
+            <path :d="tier1Path" fill="none" stroke="#2563eb" stroke-width="3" />
+            <!-- Bezier curve: cas exceptionnels (red) -->
+            <path :d="tier2Path" fill="none" stroke="#dc2626" stroke-width="2" />
+
+            <!-- Inflection reference lines -->
+            <line :x1="cx(bp.vinf)" :y1="cy(zoomPriceMin)" :x2="cx(bp.vinf)" :y2="cy(localP0)"
+              stroke="#94a3b8" stroke-width="1" stroke-dasharray="4" />
+            <line :x1="cx(zoomVolMin)" :y1="cy(localP0)" :x2="cx(bp.vinf)" :y2="cy(localP0)"
+              stroke="#94a3b8" stroke-width="1" stroke-dasharray="4" />
+
+            <!-- p0 label -->
+            <text :x="cx(zoomVolMin) + 30" :y="cy(localP0) - 6" font-size="12" fill="#1e293b" font-weight="600">
+              p0 = {{ localP0.toFixed(2) }} EUR/m3
+            </text>
+
+            <!-- Draggable control points -->
+            <circle v-for="(pt, key) in dragPoints" :key="key"
+              :cx="cx(pt.x)" :cy="cy(pt.y)"
+              :r="dragging === key ? 9 : 7"
+              :fill="ptColors[key]" stroke="white" stroke-width="2"
+              style="cursor: grab;"
+              @mousedown.prevent="startDrag(key)"
+              @touchstart.prevent="startDrag(key)"
+            />
+            <text v-for="(pt, key) in dragPoints" :key="'l-'+key"
+              :x="cx(pt.x) + 10" :y="cy(pt.y) - 10"
+              font-size="11" :fill="ptColors[key]" font-weight="500">
+              {{ ptLabels[key] }}
+            </text>
+          </svg>
+        </div>
+      </div>
+
+      <!-- ═══════════════════════════════════════════════════════
+           3. SECTION AUTHENTIFICATION
+           ═══════════════════════════════════════════════════════ -->
+      <div class="card" style="margin-bottom: 1.5rem;">
+        <h3 style="margin-bottom: 0.75rem;">Authentification</h3>
+
+        <div v-if="isCitizenAuth" class="alert alert-success">
+          Vous etes authentifie. Vous pouvez ajuster la courbe et sauvegarder votre vote.
+        </div>
+
+        <div v-else class="auth-options">
+          <!-- Code foyer -->
+          <div class="auth-option">
+            <h4>Code foyer</h4>
+            <p style="font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 0.75rem;">
+              Entrez le code a 8 caracteres recu par courrier.
+            </p>
+            <div v-if="authError" class="alert alert-error" style="margin-bottom: 0.5rem;">{{ authError }}</div>
+            <form @submit.prevent="authenticate" style="display: flex; gap: 0.5rem;">
+              <input v-model="authCode" type="text" maxlength="8" placeholder="Code foyer"
+                class="form-input" style="flex: 1; text-transform: uppercase; font-family: monospace; letter-spacing: 0.15em;" />
+              <button type="submit" class="btn btn-primary" :disabled="authLoading">OK</button>
+            </form>
           </div>
 
-          <!-- Right panel: parameters + impacts -->
-          <div class="side-panel">
-            <div class="card" style="margin-bottom: 1rem;">
-              <h4 style="margin-bottom: 0.5rem;">Parametres de la courbe</h4>
-              <div class="param-grid">
-                <div class="param-row">
-                  <span class="param-label">v<sub>inf</sub></span>
-                  <span class="param-val">{{ bp.vinf.toFixed(0) }} m3</span>
-                </div>
-                <div class="param-row">
-                  <span class="param-label">a</span>
-                  <span class="param-val">{{ bp.a.toFixed(3) }}</span>
-                </div>
-                <div class="param-row">
-                  <span class="param-label">b</span>
-                  <span class="param-val">{{ bp.b.toFixed(3) }}</span>
-                </div>
-                <div class="param-row">
-                  <span class="param-label">c</span>
-                  <span class="param-val">{{ bp.c.toFixed(3) }}</span>
-                </div>
-                <div class="param-row">
-                  <span class="param-label">d</span>
-                  <span class="param-val">{{ bp.d.toFixed(3) }}</span>
-                </div>
-                <div class="param-row">
-                  <span class="param-label">e</span>
-                  <span class="param-val">{{ bp.e.toFixed(3) }}</span>
-                </div>
-                <div class="param-row" style="grid-column: span 2; border-top: 1px solid var(--color-border); padding-top: 0.5rem;">
-                  <span class="param-label" style="font-weight: 600;">p<sub>0</sub></span>
-                  <span class="param-val" style="font-size: 1.1rem;">{{ localP0.toFixed(2) }} EUR/m3</span>
-                </div>
-              </div>
-            </div>
-
-            <!-- Impact table -->
-            <div class="card" style="margin-bottom: 1rem;">
-              <h4 style="margin-bottom: 0.5rem;">Impact par volume</h4>
-              <table class="table table-sm">
-                <thead>
-                  <tr><th>Vol.</th><th>Ancien</th><th>Nouveau RP</th><th>Nouveau RS</th></tr>
-                </thead>
-                <tbody>
-                  <tr v-for="imp in impacts" :key="imp.volume">
-                    <td>{{ imp.volume }} m3</td>
-                    <td>{{ imp.old_price.toFixed(0) }} EUR</td>
-                    <td :class="imp.new_price_rp > imp.old_price ? 'text-up' : 'text-down'">
-                      {{ imp.new_price_rp.toFixed(0) }} EUR
-                    </td>
-                    <td :class="imp.new_price_rs > imp.old_price ? 'text-up' : 'text-down'">
-                      {{ imp.new_price_rs.toFixed(0) }} EUR
-                    </td>
-                  </tr>
-                </tbody>
-              </table>
-            </div>
-
-            <!-- Vote action -->
-            <div class="card">
-              <div v-if="!isCitizenAuth">
-                <p style="font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 0.75rem;">
-                  Pour soumettre votre vote, entrez votre code foyer :
-                </p>
-                <div v-if="authError" class="alert alert-error" style="margin-bottom: 0.5rem;">{{ authError }}</div>
-                <form @submit.prevent="authenticate" style="display: flex; gap: 0.5rem;">
-                  <input v-model="authCode" type="text" maxlength="8" placeholder="Code foyer"
-                    class="form-input" style="flex: 1; text-transform: uppercase; font-family: monospace; letter-spacing: 0.15em;" />
-                  <button type="submit" class="btn btn-primary" :disabled="authLoading">OK</button>
-                </form>
-              </div>
-              <div v-else>
-                <button class="btn btn-primary" style="width: 100%;" @click="submitVote" :disabled="submitting">
-                  <span v-if="submitting" class="spinner" style="width: 1rem; height: 1rem;"></span>
-                  Soumettre mon vote
-                </button>
-                <div v-if="voteSuccess" class="alert alert-success" style="margin-top: 0.5rem;">
-                  Vote enregistre !
-                </div>
-              </div>
-            </div>
+          <!-- Duniter -->
+          <div class="auth-option" style="opacity: 0.5;">
+            <h4>Duniter</h4>
+            <p style="font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 0.75rem;">
+              Authentification par identite numerique Duniter.
+            </p>
+            <button class="btn btn-secondary" disabled>Bientot disponible</button>
           </div>
         </div>
       </div>
 
       <!-- ═══════════════════════════════════════════════════════
-           GRAPH 2: Static baseline — Modele lineaire actuel
-           (= 1er graph de eau.py — CurrentModel)
+           4. SECTION VOTE
+           ═══════════════════════════════════════════════════════ -->
+      <div class="card" style="margin-bottom: 1.5rem;">
+        <h3 style="margin-bottom: 0.5rem;">Votre vote</h3>
+        <p style="font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 1rem;">
+          Ajustez la courbe ci-dessus, puis sauvegardez. C'est votre vote. Modifiable a tout moment. La derniere position compte.
+        </p>
+        <button
+          class="btn btn-primary btn-lg"
+          @click="submitVote"
+          :disabled="!isCitizenAuth || submitting || isVoteClosed"
+        >
+          <span v-if="submitting" class="spinner" style="width: 1rem; height: 1rem;"></span>
+          Sauvegarder mon vote
+        </button>
+        <p v-if="!isCitizenAuth" style="font-size: 0.8rem; color: var(--color-text-muted); margin-top: 0.5rem;">
+          Authentifiez-vous pour voter.
+        </p>
+        <p v-else-if="isVoteClosed" style="font-size: 0.8rem; color: #dc2626; margin-top: 0.5rem;">
+          Le vote est clos.
+        </p>
+        <div v-if="voteSuccess" class="alert alert-success" style="margin-top: 0.75rem;">
+          Vote enregistre !
+        </div>
+      </div>
+
+      <!-- ═══════════════════════════════════════════════════════
+           5. COMPTE A REBOURS
+           ═══════════════════════════════════════════════════════ -->
+      <div v-if="commune.vote_deadline" class="card" style="margin-bottom: 1.5rem;">
+        <h3 style="margin-bottom: 0.5rem;">Echeance du vote</h3>
+        <div v-if="isVoteClosed" style="font-size: 1.1rem; color: #dc2626; font-weight: 600;">
+          Le vote est clos.
+        </div>
+        <div v-else class="countdown">
+          <span class="countdown-unit"><strong>{{ countdown.days }}</strong>j</span>
+          <span class="countdown-unit"><strong>{{ countdown.hours }}</strong>h</span>
+          <span class="countdown-unit"><strong>{{ countdown.minutes }}</strong>m</span>
+          <span class="countdown-unit"><strong>{{ countdown.seconds }}</strong>s</span>
+        </div>
+      </div>
+
+      <!-- ═══════════════════════════════════════════════════════
+           6. PARAMETRES COURBE + TABLE IMPACTS (2 colonnes)
+           ═══════════════════════════════════════════════════════ -->
+      <div class="params-impacts-layout" style="margin-bottom: 1.5rem;">
+        <div class="card">
+          <h4 style="margin-bottom: 0.5rem;">Parametres de la courbe</h4>
+          <div class="param-grid">
+            <div class="param-row">
+              <span class="param-label">v<sub>inf</sub></span>
+              <span class="param-val">{{ bp.vinf.toFixed(0) }} m3</span>
+            </div>
+            <div class="param-row">
+              <span class="param-label">a</span>
+              <span class="param-val">{{ bp.a.toFixed(3) }}</span>
+            </div>
+            <div class="param-row">
+              <span class="param-label">b</span>
+              <span class="param-val">{{ bp.b.toFixed(3) }}</span>
+            </div>
+            <div class="param-row">
+              <span class="param-label">c</span>
+              <span class="param-val">{{ bp.c.toFixed(3) }}</span>
+            </div>
+            <div class="param-row">
+              <span class="param-label">d</span>
+              <span class="param-val">{{ bp.d.toFixed(3) }}</span>
+            </div>
+            <div class="param-row">
+              <span class="param-label">e</span>
+              <span class="param-val">{{ bp.e.toFixed(3) }}</span>
+            </div>
+            <div class="param-row" style="grid-column: span 2; border-top: 1px solid var(--color-border); padding-top: 0.5rem;">
+              <span class="param-label" style="font-weight: 600;">p<sub>0</sub></span>
+              <span class="param-val" style="font-size: 1.1rem;">{{ localP0.toFixed(2) }} EUR/m3</span>
+            </div>
+          </div>
+        </div>
+
+        <div class="card">
+          <h4 style="margin-bottom: 0.5rem;">Impact par volume</h4>
+          <table class="table table-sm">
+            <thead>
+              <tr><th>Vol.</th><th>Ancien</th><th>Nouveau RP</th><th>Nouveau RS</th></tr>
+            </thead>
+            <tbody>
+              <tr v-for="imp in impacts" :key="imp.volume">
+                <td>{{ imp.volume }} m3</td>
+                <td>{{ imp.old_price.toFixed(0) }} EUR</td>
+                <td :class="imp.new_price_rp > imp.old_price ? 'text-up' : 'text-down'">
+                  {{ imp.new_price_rp.toFixed(0) }} EUR
+                </td>
+                <td :class="imp.new_price_rs > imp.old_price ? 'text-up' : 'text-down'">
+                  {{ imp.new_price_rs.toFixed(0) }} EUR
+                </td>
+              </tr>
+            </tbody>
+          </table>
+        </div>
+      </div>
+
+      <!-- ═══════════════════════════════════════════════════════
+           7. TARIFICATION ACTUELLE (baseline lineaire)
            ═══════════════════════════════════════════════════════ -->
       <div class="card" style="margin-bottom: 1.5rem;">
         <h3 style="margin-bottom: 0.5rem;">Tarification actuelle (modele lineaire)</h3>
@@ -244,7 +291,6 @@
           <div class="chart-container">
             <h4 style="text-align: center; font-size: 0.85rem; margin-bottom: 0.25rem;">Facture totale (EUR)</h4>
             <svg :viewBox="`0 0 ${W2} ${H2}`" preserveAspectRatio="xMidYMid meet">
-              <!-- Grid -->
               <g>
                 <line v-for="v in gridVols2" :key="'bg1v'+v"
                   :x1="cx2(v)" :y1="cy2bill(0)" :x2="cx2(v)" :y2="cy2bill(maxBill)"
@@ -257,11 +303,8 @@
                 <text v-for="b in gridBills" :key="'bg1lb'+b"
                   :x="margin2.left - 4" :y="cy2bill(b) + 3" text-anchor="end" font-size="9" fill="#94a3b8">{{ b }}</text>
               </g>
-              <!-- RP curve -->
               <polyline :points="baselineBillRP" fill="none" stroke="#2563eb" stroke-width="1.5" />
-              <!-- RS curve -->
               <polyline :points="baselineBillRS" fill="none" stroke="#dc2626" stroke-width="1.5" />
-              <!-- Legend -->
               <g :transform="`translate(${W2 - 100}, 15)`">
                 <line x1="0" y1="0" x2="15" y2="0" stroke="#2563eb" stroke-width="1.5" />
                 <text x="18" y="3" font-size="9" fill="#1e293b">RP/PRO</text>
@@ -276,7 +319,6 @@
           <div class="chart-container">
             <h4 style="text-align: center; font-size: 0.85rem; margin-bottom: 0.25rem;">Prix au m<sup>3</sup> (EUR)</h4>
             <svg :viewBox="`0 0 ${W2} ${H2}`" preserveAspectRatio="xMidYMid meet">
-              <!-- Grid -->
               <g>
                 <line v-for="v in gridVols2" :key="'bg2v'+v"
                   :x1="cx2(v)" :y1="cy2price(0)" :x2="cx2(v)" :y2="cy2price(pmax)"
@@ -289,11 +331,8 @@
                 <text v-for="p in gridPrices2" :key="'bg2lp'+p"
                   :x="margin2.left - 4" :y="cy2price(p) + 3" text-anchor="end" font-size="9" fill="#94a3b8">{{ p }}</text>
               </g>
-              <!-- RP price/m3 curve (hyperbolic) -->
               <polyline :points="baselinePriceRP" fill="none" stroke="#2563eb" stroke-width="1.5" />
-              <!-- RS price/m3 curve -->
               <polyline :points="baselinePriceRS" fill="none" stroke="#dc2626" stroke-width="1.5" />
-              <!-- p0 baseline line -->
               <line :x1="cx2(0)" :y1="cy2price(curveData.p0_linear)" :x2="cx2(vmax)" :y2="cy2price(curveData.p0_linear)"
                 stroke="#94a3b8" stroke-width="1" stroke-dasharray="4" />
               <text :x="cx2(vmax) - 5" :y="cy2price(curveData.p0_linear) - 5" text-anchor="end"
@@ -306,8 +345,10 @@
         </div>
       </div>
 
-      <!-- Tariff params info -->
-      <div class="card">
+      <!-- ═══════════════════════════════════════════════════════
+           8. INFORMATIONS TARIFAIRES
+           ═══════════════════════════════════════════════════════ -->
+      <div class="card" style="margin-bottom: 1.5rem;">
         <h3 style="margin-bottom: 0.75rem;">Informations tarifaires</h3>
         <div v-if="params" class="grid grid-5-info">
           <div><strong>{{ params.recettes.toLocaleString() }} EUR</strong><br/><span class="info-label">Recettes cibles</span></div>
@@ -317,6 +358,17 @@
           <div><strong>{{ params.vmax }} m3</strong><br/><span class="info-label">Volume max</span></div>
         </div>
       </div>
+
+      <!-- ═══════════════════════════════════════════════════════
+           9. CONTENU CMS — deplace en fin de page
+           ═══════════════════════════════════════════════════════ -->
+      <div v-if="contentPages.length" style="margin-bottom: 1.5rem;">
+        <div v-for="page in contentPages" :key="page.slug" class="card" style="margin-bottom: 1rem;">
+          <h3 style="margin-bottom: 0.5rem;">{{ page.title }}</h3>
+          <div class="cms-body" v-html="renderMarkdown(page.body_markdown)"></div>
+        </div>
+      </div>
+
     </template>
   </div>
 
@@ -367,6 +419,39 @@ const isCitizenAuth = computed(() => authStore.isCitizen && authStore.communeSlu
 const submitting = ref(false)
 const voteSuccess = ref(false)
 
+// ── Countdown ──
+const countdown = reactive({ days: 0, hours: 0, minutes: 0, seconds: 0 })
+const isVoteClosed = ref(false)
+let countdownInterval: ReturnType<typeof setInterval> | null = null
+
+function updateCountdown() {
+  if (!commune.value?.vote_deadline) return
+  const now = Date.now()
+  const deadline = new Date(commune.value.vote_deadline).getTime()
+  const diff = deadline - now
+  if (diff <= 0) {
+    isVoteClosed.value = true
+    countdown.days = 0
+    countdown.hours = 0
+    countdown.minutes = 0
+    countdown.seconds = 0
+    if (countdownInterval) {
+      clearInterval(countdownInterval)
+      countdownInterval = null
+    }
+    return
+  }
+  isVoteClosed.value = false
+  countdown.days = Math.floor(diff / 86400000)
+  countdown.hours = Math.floor((diff % 86400000) / 3600000)
+  countdown.minutes = Math.floor((diff % 3600000) / 60000)
+  countdown.seconds = Math.floor((diff % 60000) / 1000)
+}
+
+onUnmounted(() => {
+  if (countdownInterval) clearInterval(countdownInterval)
+})
+
 // ── Chart 1: Interactive Bezier with zoom ──
 const W = 620
 const H = 380
@@ -534,8 +619,6 @@ function handleDrag(pt: { x: number; y: number }) {
       break
     }
   }
-  // p0 stays fixed during drag — curve updates reactively via bp → cp → SVG paths
-  // Server will compute authoritative p0 + impacts on mouseUp
 }
 
 let serverTimeout: ReturnType<typeof setTimeout> | null = null
@@ -691,10 +774,19 @@ onMounted(async () => {
     for (let i = 0; i < (stats.pro_count || 0); i++) hh.push({ volume_m3: avgVol, status: 'PRO' })
     households.value = hh
 
-    // Load all vote curves for outlier overlay (public endpoint needed)
+    // Load all vote curves for outlier overlay
     try {
       outlierVotes.value = await api.get<any[]>(`/communes/${slug}/votes/current/overlay`)
     } catch { /* endpoint may not exist yet */ }
+
+    // Default zoom to "Population" preset
+    zoomPreset('tier1')
+
+    // Start countdown if deadline set
+    if (c.vote_deadline) {
+      updateCountdown()
+      countdownInterval = setInterval(updateCountdown, 1000)
+    }
   } catch (e: any) {
     loadError.value = e.message
   } finally {
@@ -746,24 +838,52 @@ function renderMarkdown(md: string): string {
 
 .toggle-label input { cursor: pointer; }
 
-.editor-layout {
-  display: grid;
-  grid-template-columns: 1fr 320px;
-  gap: 1rem;
-}
-@media (max-width: 900px) {
-  .editor-layout { grid-template-columns: 1fr; }
-}
-
 .chart-container svg {
   width: 100%;
   height: auto;
   user-select: none;
 }
 
-.side-panel .card {
-  background: var(--color-bg);
+.chart-container svg path {
+  stroke-linecap: round;
+  stroke-linejoin: round;
+  transition: stroke-width 0.2s ease;
+}
+
+.chart-container svg circle {
+  transition: r 0.2s ease, fill 0.2s ease;
+}
+
+.chart-container svg circle:hover {
+  r: 10;
+  fill: #1d4ed8;
+}
+
+/* Auth options: 2 columns */
+.auth-options {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 1rem;
+}
+@media (max-width: 700px) {
+  .auth-options { grid-template-columns: 1fr; }
+}
+
+.auth-option {
   border: 1px solid var(--color-border);
+  border-radius: 8px;
+  padding: 1rem;
+  background: var(--color-bg);
+}
+
+/* Params + impacts: 2 columns */
+.params-impacts-layout {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 1rem;
+}
+@media (max-width: 700px) {
+  .params-impacts-layout { grid-template-columns: 1fr; }
 }
 
 .param-grid {
@@ -814,6 +934,24 @@ function renderMarkdown(md: string): string {
   font-size: 0.85rem;
 }
 
+/* Vote button */
+.btn-lg {
+  padding: 0.75rem 2rem;
+  font-size: 1.1rem;
+  font-weight: 600;
+}
+
+/* Countdown */
+.countdown {
+  display: flex;
+  gap: 0.75rem;
+  font-size: 1.5rem;
+}
+.countdown-unit strong {
+  font-size: 2rem;
+  font-weight: 700;
+}
+
 .cms-body { line-height: 1.7; font-size: 0.9rem; }
 .cms-body :deep(h2) { font-size: 1.2rem; margin: 0.75rem 0 0.5rem; }
 .cms-body :deep(h3) { font-size: 1.05rem; margin: 0.5rem 0 0.25rem; }