diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d3187d3f..bab62122 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,6 +29,7 @@ jobs:
         run: |
           node scripts/rewrite-links.mjs
           node scripts/smoke-test.mjs
+          node scripts/seat-color-test.mjs
           node scripts/seo-audit.mjs
           node scripts/check-outbound-links.mjs
       - name: Verify explicitly indexable build
diff --git a/.github/workflows/pages-stage.yml b/.github/workflows/pages-stage.yml
index 23cf9eb2..3e92d0d1 100644
--- a/.github/workflows/pages-stage.yml
+++ b/.github/workflows/pages-stage.yml
@@ -86,6 +86,7 @@ jobs:
           npm run build
           node scripts/rewrite-links.mjs
           node scripts/smoke-test.mjs
+          node scripts/seat-color-test.mjs
           node scripts/seo-audit.mjs
 
       - name: Stage full site and preview into gh-pages
diff --git a/scripts/seat-color-test.mjs b/scripts/seat-color-test.mjs
new file mode 100644
index 00000000..3ff14619
--- /dev/null
+++ b/scripts/seat-color-test.mjs
@@ -0,0 +1,44 @@
+#!/usr/bin/env node
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { parseSeatColor, seatForeground, seatTypePalette, seatColorStyle } from '../src/lib/seat-colors.js';
+
+// Source-supplied names do not imply a color; the Color field does.
+const sourceTypes = [
+  { Type: 1, Name: 'Ghế Thường', Color: '#7f55db' },
+  { Type: 2, Name: 'VIP', Color: 'rgb(236, 62, 83)' },
+  { Type: 3, Name: 'WAKU WAKU', Color: '#e4a43e' },
+  { Type: 4, Name: 'DOKI DOKI', Color: '#e64f9e' }
+];
+const palette = seatTypePalette(sourceTypes);
+assert.equal(palette.size, 4);
+assert.equal(palette.get('1').color, '#7f55db');
+assert.equal(palette.get('2').color, '#ec3e53');
+assert.equal(palette.get('3').color, '#e4a43e');
+assert.equal(palette.get('4').color, '#e64f9e');
+assert.equal(new Set([...palette.values()].map((type) => type.color)).size, 4);
+assert.equal(seatForeground('#ffffff'), '#132033');
+assert.equal(seatForeground('#151515'), '#ffffff');
+
+// Repeated/missing/invalid colors must not collapse two distinct seat types.
+const ambiguousTypes = seatTypePalette([
+  { Type: '1', Name: 'Ghế Thường', Color: '#7f55db' },
+  { Type: '2', Name: 'WAKU WAKU', Color: '#7f55db' },
+  { Type: '3', Name: 'DOKI DOKI', Color: '' },
+  { Type: '4', Name: 'Khác', Color: 'red;position:absolute' }
+]);
+assert.equal(ambiguousTypes.size, 4);
+assert.equal(new Set([...ambiguousTypes.values()].map((type) => type.color)).size, 4);
+assert.equal(parseSeatColor('#abc'), '#aabbcc');
+assert.equal(parseSeatColor('rgba(0,0,0,0)'), null);
+assert.equal(parseSeatColor('url(javascript:alert(1))'), null);
+assert.match(seatColorStyle(ambiguousTypes.get('4')), /^--seat-type-color:#[0-9a-f]{6};--seat-type-foreground:#[0-9a-f]{6}$/);
+const markup = readFileSync('src/components/SeatMap.astro', 'utf8');
+const css = readFileSync('src/styles/seatmap-redesign.css', 'utf8');
+assert.ok(markup.includes('palette.get(String(seat.cinemaAreaCode))'), 'Seat must resolve by actual source code');
+assert.ok(markup.includes('seatColorStyle(type)'), 'Seat and legend must share the same palette');
+assert.ok(markup.includes('seatmap__counts'), 'Occupancy totals must not be presented as seat type colors');
+assert.ok(!markup.includes("const kind = /vip/"), 'Do not infer type color from names');
+assert.ok(css.includes('background: var(--seat-type-color'), 'Seat type CSS variable missing');
+assert.ok(css.includes('.seatmap__swatch--type'), 'Legend color CSS variable missing');
+console.log('PASS: seat type colors, duplicate/invalid data fallbacks, contrast, rendering and legend');
diff --git a/src/components/SeatMap.astro b/src/components/SeatMap.astro
index a73cf9c8..eedb425e 100644
--- a/src/components/SeatMap.astro
+++ b/src/components/SeatMap.astro
@@ -105,6 +105,7 @@ import '../styles/seatmap-redesign.css';
 
 <script>
   import { loadSeats } from '../lib/momo-client.js';
+  import { seatTypePalette, seatColorStyle } from '../lib/seat-colors.js';
 
   const root = document.querySelector('[data-seatmap]');
   if (root) {
@@ -143,7 +144,9 @@ import '../styles/seatmap-redesign.css';
 
     function renderSeats(detail, data) {
       const info = data.SeatsInfo;
-      const typeByCode = new Map((info.SeatTypes || []).map((type) => [type.Type, type]));
+      const palette = seatTypePalette(info.SeatTypes || []);
+      const visibleTypes = new Set();
+      let unknownType = false;
       let free = 0;
       let taken = 0;
       const rowsHtml = (info.Seats || []).map((row) => {
@@ -151,29 +154,29 @@ import '../styles/seatmap-redesign.css';
         const cells = row.map((seat) => {
           if (!seat.id) return '<span class="seat seat--gap" aria-hidden="true"></span>';
           const name = `${seat.nameRow}${seat.momoId || ''}`;
-          const type = typeByCode.get(seat.cinemaAreaCode);
-          const color = type?.Color || '';
+          const type = palette.get(String(seat.cinemaAreaCode));
           if (seat.status !== 0) {
             taken++;
             return `<button type="button" class="seat" disabled title="${esc(name)} — đã đặt">${esc(seat.momoId || '')}</button>`;
           }
           free++;
-          const typeName = type?.Name ? ` · ${type.Name}` : '';
-          const normalized = String(type?.Name || '').normalize('NFD').replace(/[\u0300-\u036f]/g, '').toLowerCase();
-          const kind = /vip/.test(normalized) ? 'seat--vip'
-            : /(couple|sweet|doi|double|love)/.test(normalized) ? 'seat--couple'
-            : 'seat--standard';
-          return `<button type="button" class="seat seat--available ${kind}" data-seat="${esc(name)}" data-price="${seat.price || 0}" aria-pressed="false" title="${esc(name + typeName)} — ${vnd.format(seat.price || 0)}₫">${esc(seat.momoId || '')}</button>`;
+          if (type) visibleTypes.add(type.key);
+          else unknownType = true;
+          const seatTypeName = type?.label || 'Chưa xác định loại ghế';
+          const style = type ? seatColorStyle(type)
+            : '--seat-type-color:#637186;--seat-type-foreground:#ffffff';
+          const tooltip = name + ' · ' + seatTypeName + ' — ' + vnd.format(seat.price || 0) + '₫';
+          return `<button type="button" class="seat seat--available" style="${style}" data-seat="${esc(name)}" data-price="${seat.price || 0}" aria-label="${esc(tooltip)}" aria-pressed="false" title="${esc(tooltip)}">${esc(seat.momoId || '')}</button>`;
         }).join('');
         return `<div class="seatmap__row"><span class="seatmap__row-label">${esc(label)}</span>${cells}<span class="seatmap__row-label">${esc(label)}</span></div>`;
       }).join('');
-      const legendTypes = (info.SeatTypes || []).map((type) => {
-        const normalized = String(type.Name || '').normalize('NFD').replace(/[\u0300-\u036f]/g, '').toLowerCase();
-        const kind = /vip/.test(normalized) ? 'seatmap__swatch--vip'
-          : /(couple|sweet|doi|double|love)/.test(normalized) ? 'seatmap__swatch--couple'
-          : 'seatmap__swatch--standard';
-        return `<span><i class="seatmap__swatch ${kind}"></i>${esc(type.Name)}</span>`;
+      const legendTypes = [...visibleTypes].map((key) => {
+        const type = palette.get(key);
+        return `<span><i class="seatmap__swatch seatmap__swatch--type" style="${seatColorStyle(type)}"></i>${esc(type.label)}</span>`;
       }).join('');
+      const unknownLegend = unknownType
+        ? '<span><i class="seatmap__swatch seatmap__swatch--unknown"></i>Chưa rõ loại ghế</span>'
+        : '';
       bodyEl.innerHTML = `<div class="seatmap__map-scroll" data-seatmap-scroll role="region" aria-label="Sơ đồ ghế — cuộn ngang để xem tất cả các ghế" tabindex="0">
           <div class="seatmap__stage">
             <div class="seatmap__screen">MÀN HÌNH</div>
@@ -181,11 +184,15 @@ import '../styles/seatmap-redesign.css';
           </div>
         </div>
         <p class="seatmap__scroll-hint" data-seatmap-hint hidden>↔ Vuốt ngang để xem toàn bộ ghế</p>
-        <div class="seatmap__legend">
-          <span><i class="seatmap__swatch seatmap__swatch--standard"></i>Ghế trống (${free})</span>
-          <span><i class="seatmap__swatch seatmap__swatch--taken"></i>Đã đặt (${taken})</span>
-          <span><i class="seatmap__swatch seatmap__swatch--selected"></i>Đang chọn</span>
+        <div class="seatmap__counts" aria-label="Thống kê trạng thái ghế">
+          <span>Còn trống <strong>${free}</strong></span>
+          <span>Đã đặt <strong>${taken}</strong></span>
+        </div>
+        <div class="seatmap__legend" aria-label="Chú thích màu ghế">
           ${legendTypes}
+          ${unknownLegend}
+          <span><i class="seatmap__swatch seatmap__swatch--taken"></i>Đã đặt</span>
+          <span><i class="seatmap__swatch seatmap__swatch--selected"></i>Đang chọn</span>
         </div>`;
       const scroller = bodyEl.querySelector('[data-seatmap-scroll]');
       const hint = bodyEl.querySelector('[data-seatmap-hint]');
diff --git a/src/lib/seat-colors.js b/src/lib/seat-colors.js
new file mode 100644
index 00000000..109a9b4e
--- /dev/null
+++ b/src/lib/seat-colors.js
@@ -0,0 +1,80 @@
+/**
+ * Visual seat colors derive from SeatsInfo.SeatTypes, not guesses based on
+ * names such as VIP, WAKU WAKU, DOKI DOKI, or Sweetbox.
+ */
+const FALLBACK_COLORS = Object.freeze([
+  '#8056d9', '#ef4763', '#eb9b3c', '#d846a6',
+  '#228ea8', '#34a173', '#c2a42f', '#6372d6',
+  '#a96a4f', '#a44fa1', '#5374aa', '#b9617c'
+]);
+
+export function parseSeatColor(raw) {
+  if (typeof raw !== 'string') return null;
+  const color = raw.trim();
+  const hex3 = /^#([0-9a-f]{3})$/i.exec(color);
+  if (hex3) return '#' + [...hex3[1]].map((x) => x + x).join('').toLowerCase();
+  const hex6 = /^#([0-9a-f]{6})$/i.exec(color);
+  if (hex6) return '#' + hex6[1].toLowerCase();
+  const rgb = /^rgb\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*\)$/i.exec(color);
+  if (rgb) {
+    const values = rgb.slice(1).map(Number);
+    if (values.every((x) => x >= 0 && x <= 255)) {
+      return '#' + values.map((x) => x.toString(16).padStart(2, '0')).join('');
+    }
+  }
+  return null;
+}
+
+function hslToRgb(h, s, l) {
+  const f = (n) => {
+    const k = (n + h * 12) % 12;
+    const a = s * Math.min(l, 1 - l);
+    return Math.round(255 * (l - a * Math.max(-1, Math.min(k - 3, 9 - k, 1))));
+  };
+  return [f(0), f(8), f(4)];
+}
+
+function fallbackColor(used, index) {
+  for (let offset = 0; offset < FALLBACK_COLORS.length; offset++) {
+    const color = FALLBACK_COLORS[(index + offset) % FALLBACK_COLORS.length];
+    if (!used.has(color)) return color;
+  }
+  const hue = (index * 137.508) % 360;
+  const rgb = hslToRgb(hue / 360, 0.55, 0.48);
+  return '#' + rgb.map((v) => v.toString(16).padStart(2, '0')).join('');
+}
+
+/** Numeric label contrast against a given RGB background. */
+export function seatForeground(hex) {
+  const rgb = [1, 3, 5].map((i) => parseInt(hex.slice(i, i + 2), 16) / 255);
+  const luminance = rgb.map((x) => x <= 0.04045 ? x / 12.92 : ((x + 0.055) / 1.055) ** 2.4)
+    .reduce((a, x, i) => a + x * [0.2126, 0.7152, 0.0722][i], 0);
+  return luminance > 0.18 ? '#132033' : '#ffffff';
+}
+
+export function seatTypePalette(types = []) {
+  const colors = new Set();
+  const palette = new Map();
+  for (const [index, type] of types.entries()) {
+    if (type?.Type === undefined || type.Type === null) continue;
+    const key = String(type.Type);
+    if (palette.has(key)) continue;
+    let color = parseSeatColor(type.Color);
+    // Treat repeated upstream colors as ambiguous and render a distinct
+    // fallback, so different labels cannot look like the same category.
+    if (!color || colors.has(color)) color = fallbackColor(colors, index);
+    colors.add(color);
+    palette.set(key, {
+      key,
+      label: String(type.Name || 'Loại ghế ' + key),
+      color,
+      foreground: seatForeground(color)
+    });
+  }
+  return palette;
+}
+
+/** CSS custom properties can only receive normalized hex colors above. */
+export function seatColorStyle(type) {
+  return '--seat-type-color:' + type.color + ';--seat-type-foreground:' + type.foreground;
+}
diff --git a/src/styles/seatmap-redesign.css b/src/styles/seatmap-redesign.css
index 8330099a..a251c124 100644
--- a/src/styles/seatmap-redesign.css
+++ b/src/styles/seatmap-redesign.css
@@ -40,13 +40,18 @@
   width: 30px; height: 30px; font-size: 10px; font-weight: 800;
   background: #7850d6; color: #fff; transition: background .14s, box-shadow .14s, transform .14s;
 }
-.seatmap .seat--available.seat--vip { background: #ec3e53; color: white; }
-.seatmap .seat--available.seat--couple { background: #d936a8; color: white; min-width: 47px; }
-.seatmap .seat:hover:not(:disabled) {
-  background: #9978f0; border-color: #f9edff; color: #fff; transform: translateY(-2px);
+.seatmap .seat--available {
+  background: var(--seat-type-color, #637186);
+  color: var(--seat-type-foreground, #ffffff);
+}
+.seatmap .seat--available:hover:not(:disabled) {
+  background: var(--seat-type-color, #637186);
+  color: var(--seat-type-foreground, #ffffff);
+  border-color: #faf4ff;
+  box-shadow: 0 0 0 2px rgba(255,255,255,.35);
+  filter: brightness(1.12);
+  transform: translateY(-2px);
 }
-.seatmap .seat--available.seat--vip:hover:not(:disabled) { background: #fb6576; }
-.seatmap .seat--available.seat--couple:hover:not(:disabled) { background: #f064c7; }
 .seatmap .seat:disabled {
   background: #53505b; border-color: transparent; color: #c3becd;
   text-decoration: none; cursor: not-allowed; opacity: .7;
@@ -55,18 +60,30 @@
   background: #19b3a8; border-color: #b7fff7; color: #061d25;
   box-shadow: 0 0 0 2px rgba(25,179,168,.23); transform: none;
 }
+/* Selected seat must stay teal even when hovered (hover specificity is higher). */
+.seatmap .seat--available[aria-pressed="true"]:hover:not(:disabled) {
+  background: #19b3a8; color: #061d25; border-color: #b7fff7;
+  filter: none; transform: none;
+}
 .seatmap .seat--gap { visibility: hidden; }
 .seatmap .seatmap__legend {
   max-width: 760px; margin: 24px auto 0; padding-top: 18px;
   border-top: 1px solid rgba(255,255,255,.1); justify-content: center; gap: 12px 20px;
   color: #d2ccd9; font-size: 11px; line-height: 1.5;
 }
-.seatmap .seatmap__swatch { width: 16px; height: 16px; border: 0; border-radius: 4px; background: #7850d6; }
-.seatmap .seatmap__swatch--standard { background: #7850d6; }
-.seatmap .seatmap__swatch--vip { background: #ec3e53; }
-.seatmap .seatmap__swatch--couple { background: #d936a8; }
+.seatmap .seatmap__swatch { width: 16px; height: 16px; border: 0; border-radius: 4px; display: inline-block; }
+.seatmap .seatmap__swatch--type { background: var(--seat-type-color, #637186); }
+.seatmap .seatmap__swatch--unknown { background: #637186; }
 .seatmap .seatmap__swatch--taken { background: #53505b; }
 .seatmap .seatmap__swatch--selected { background: #19b3a8; }
+.seatmap .seatmap__counts {
+  display: flex; justify-content: center; gap: 22px; flex-wrap: wrap;
+  padding: 15px 0 0; margin: 10px auto 0; border-top: 1px solid rgba(255,255,255,.12);
+  font-size: 12px; color: #c9c6d1;
+}
+.seatmap .seatmap__counts strong { color: #fff; margin-left: 5px; font-variant-numeric: tabular-nums; }
+.seatmap .seatmap__legend { border-top: 0; padding-top: 9px; margin-top: 0; }
+.seatmap .seatmap__legend span { white-space: normal; }
 .seatmap .seatmap__scroll-hint { color: #e0d6ec; font-size: 12px; margin: 3px 0 14px; }
 .seatmap .seatmap__status { color: #c8c4d3; font-size: 13px; line-height: 1.65; }
 .seatmap .seatmap__status button { background: #2b354c; color: #fff; border-color: #667084; }