refactor(map): UI 개선 — 3D 명칭, 수심 줌, 레거시 비활성

- "지구본" → "3D" 명칭 변경, 헤더 우측으로 이동
- 레거시 베이스맵 비활성 (주석처리)
- 수심 minzoom 통일: fill 3, borders 5, major 3
- NavigationControl 통합, 기어 버튼 겹침 수정
- constants.ts 미사용 BATHY_ZOOM_RANGES 제거

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/src/app/styles.css

@@ -921,6 +921,182 @@ body {
   border-radius: 8px;
 }
 
+/* ── Map Settings Panel ────────────────────────────────────────────── */
+
+.map-settings-gear {
+  position: absolute;
+  top: 100px;
+  left: 10px;
+  z-index: 850;
+  width: 29px;
+  height: 29px;
+  border-radius: 4px;
+  border: 1px solid var(--border);
+  background: rgba(15, 23, 42, 0.92);
+  backdrop-filter: blur(8px);
+  color: var(--muted);
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 16px;
+  transition: color 0.15s, border-color 0.15s;
+  user-select: none;
+  padding: 0;
+}
+
+.map-settings-gear:hover {
+  color: var(--text);
+  border-color: var(--accent);
+}
+
+.map-settings-gear.open {
+  color: var(--accent);
+  border-color: var(--accent);
+}
+
+.map-settings-panel {
+  position: absolute;
+  top: 10px;
+  left: 48px;
+  z-index: 850;
+  background: rgba(15, 23, 42, 0.95);
+  backdrop-filter: blur(8px);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  padding: 12px;
+  width: 240px;
+  max-height: calc(100vh - 80px);
+  overflow-y: auto;
+}
+
+.map-settings-panel .ms-title {
+  font-size: 11px;
+  font-weight: 700;
+  color: var(--text);
+  letter-spacing: 1px;
+  margin-bottom: 10px;
+}
+
+.map-settings-panel .ms-section {
+  margin-bottom: 10px;
+}
+
+.map-settings-panel .ms-label {
+  font-size: 10px;
+  font-weight: 600;
+  color: var(--text);
+  letter-spacing: 0.5px;
+  margin-bottom: 5px;
+}
+
+.map-settings-panel .ms-row {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  margin-bottom: 4px;
+}
+
+.map-settings-panel .ms-color-input {
+  width: 24px;
+  height: 24px;
+  border: 1px solid var(--border);
+  border-radius: 4px;
+  padding: 0;
+  cursor: pointer;
+  background: transparent;
+  flex-shrink: 0;
+}
+
+.map-settings-panel .ms-color-input::-webkit-color-swatch-wrapper {
+  padding: 1px;
+}
+
+.map-settings-panel .ms-color-input::-webkit-color-swatch {
+  border: none;
+  border-radius: 2px;
+}
+
+.map-settings-panel .ms-hex {
+  font-size: 9px;
+  color: #94a3b8;
+  font-family: monospace;
+}
+
+.map-settings-panel .ms-depth-label {
+  font-size: 10px;
+  color: var(--text);
+  min-width: 48px;
+  text-align: right;
+}
+
+.map-settings-panel select {
+  font-size: 10px;
+  padding: 4px 8px;
+  border-radius: 4px;
+  border: 1px solid var(--border);
+  background: var(--card);
+  color: var(--text);
+  cursor: pointer;
+  outline: none;
+  width: 100%;
+}
+
+.map-settings-panel select:focus {
+  border-color: var(--accent);
+}
+
+.map-settings-panel .ms-reset {
+  width: 100%;
+  font-size: 9px;
+  padding: 5px 8px;
+  border-radius: 4px;
+  border: 1px solid var(--border);
+  background: var(--card);
+  color: var(--muted);
+  cursor: pointer;
+  transition: all 0.15s;
+  margin-top: 4px;
+}
+
+.map-settings-panel .ms-reset:hover {
+  color: var(--text);
+  border-color: var(--accent);
+}
+
+/* ── Depth Legend ──────────────────────────────────────────────────── */
+
+.depth-legend {
+  position: absolute;
+  bottom: 44px;
+  left: 10px;
+  z-index: 800;
+  background: rgba(15, 23, 42, 0.92);
+  backdrop-filter: blur(8px);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  padding: 8px;
+  display: flex;
+  gap: 6px;
+  align-items: stretch;
+}
+
+.depth-legend__bar {
+  width: 14px;
+  border-radius: 3px;
+  min-height: 120px;
+}
+
+.depth-legend__ticks {
+  display: flex;
+  flex-direction: column;
+  justify-content: space-between;
+  font-size: 8px;
+  color: var(--muted);
+  font-family: monospace;
+  padding: 1px 0;
+}
+
 @media (max-width: 920px) {
   .app {
     grid-template-columns: 1fr;

apps/web/src/features/mapSettings/MapSettingsPanel.tsx

@@ -0,0 +1,221 @@
+import { useState } from 'react';
+import type { MapStyleSettings, MapLabelLanguage, DepthFontSize, DepthColorStop } from './types';
+import { DEFAULT_MAP_STYLE_SETTINGS } from './types';
+
+interface MapSettingsPanelProps {
+  value: MapStyleSettings;
+  onChange: (next: MapStyleSettings) => void;
+}
+
+const LANGUAGES: { value: MapLabelLanguage; label: string }[] = [
+  { value: 'ko', label: '한국어' },
+  { value: 'en', label: 'English' },
+  { value: 'ja', label: '日本語' },
+  { value: 'zh', label: '中文' },
+  { value: 'local', label: '현지어' },
+];
+
+const FONT_SIZES: { value: DepthFontSize; label: string }[] = [
+  { value: 'small', label: '소' },
+  { value: 'medium', label: '중' },
+  { value: 'large', label: '대' },
+];
+
+function depthLabel(depth: number): string {
+  return `${Math.abs(depth).toLocaleString()}m`;
+}
+
+function hexToRgb(hex: string): [number, number, number] {
+  return [
+    parseInt(hex.slice(1, 3), 16),
+    parseInt(hex.slice(3, 5), 16),
+    parseInt(hex.slice(5, 7), 16),
+  ];
+}
+
+function rgbToHex(r: number, g: number, b: number): string {
+  return `#${[r, g, b].map((c) => Math.round(Math.max(0, Math.min(255, c))).toString(16).padStart(2, '0')).join('')}`;
+}
+
+function interpolateGradient(stops: DepthColorStop[]): DepthColorStop[] {
+  if (stops.length < 2) return stops;
+  const sorted = [...stops].sort((a, b) => a.depth - b.depth);
+  const first = sorted[0];
+  const last = sorted[sorted.length - 1];
+  const [r1, g1, b1] = hexToRgb(first.color);
+  const [r2, g2, b2] = hexToRgb(last.color);
+  return sorted.map((stop, i) => {
+    if (i === 0 || i === sorted.length - 1) return stop;
+    const t = i / (sorted.length - 1);
+    return {
+      depth: stop.depth,
+      color: rgbToHex(
+        r1 + (r2 - r1) * t,
+        g1 + (g2 - g1) * t,
+        b1 + (b2 - b1) * t,
+      ),
+    };
+  });
+}
+
+export function MapSettingsPanel({ value, onChange }: MapSettingsPanelProps) {
+  const [open, setOpen] = useState(false);
+  const [autoGradient, setAutoGradient] = useState(false);
+
+  const update = <K extends keyof MapStyleSettings>(key: K, val: MapStyleSettings[K]) => {
+    onChange({ ...value, [key]: val });
+  };
+
+  const updateDepthStop = (index: number, color: string) => {
+    const next = value.depthStops.map((s, i) => (i === index ? { ...s, color } : s));
+    if (autoGradient && (index === 0 || index === next.length - 1)) {
+      update('depthStops', interpolateGradient(next));
+    } else {
+      update('depthStops', next);
+    }
+  };
+
+  const toggleAutoGradient = () => {
+    const next = !autoGradient;
+    setAutoGradient(next);
+    if (next) {
+      update('depthStops', interpolateGradient(value.depthStops));
+    }
+  };
+
+  return (
+    <>
+      <button
+        className={`map-settings-gear${open ? ' open' : ''}`}
+        onClick={() => setOpen((p) => !p)}
+        title="지도 설정"
+        type="button"
+      >
+        ⚙
+      </button>
+
+      {open && (
+        <div className="map-settings-panel">
+          <div className="ms-title">지도 설정</div>
+
+          {/* ── Language ──────────────────────────────────── */}
+          <div className="ms-section">
+            <div className="ms-label">레이블 언어</div>
+            <select
+              value={value.labelLanguage}
+              onChange={(e) => update('labelLanguage', e.target.value as MapLabelLanguage)}
+            >
+              {LANGUAGES.map((l) => (
+                <option key={l.value} value={l.value}>
+                  {l.label}
+                </option>
+              ))}
+            </select>
+          </div>
+
+          {/* ── Land color ────────────────────────────────── */}
+          <div className="ms-section">
+            <div className="ms-label">육지 색상</div>
+            <div className="ms-row">
+              <input
+                type="color"
+                className="ms-color-input"
+                value={value.landColor}
+                onChange={(e) => update('landColor', e.target.value)}
+              />
+              <span className="ms-hex">{value.landColor}</span>
+            </div>
+          </div>
+
+          {/* ── Water color ───────────────────────────────── */}
+          <div className="ms-section">
+            <div className="ms-label">물 기본색</div>
+            <div className="ms-row">
+              <input
+                type="color"
+                className="ms-color-input"
+                value={value.waterBaseColor}
+                onChange={(e) => update('waterBaseColor', e.target.value)}
+              />
+              <span className="ms-hex">{value.waterBaseColor}</span>
+            </div>
+          </div>
+
+          {/* ── Depth gradient ────────────────────────────── */}
+          <div className="ms-section">
+            <div className="ms-label" style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between' }}>
+              수심 구간 색상
+              <span
+                className={`tog-btn${autoGradient ? ' on' : ''}`}
+                style={{ fontSize: 8, padding: '1px 5px', marginLeft: 8 }}
+                onClick={toggleAutoGradient}
+                title="최소/최대 색상 기준으로 중간 구간을 자동 보간합니다"
+              >
+                자동채우기
+              </span>
+            </div>
+            {value.depthStops.map((stop, i) => {
+              const isEdge = i === 0 || i === value.depthStops.length - 1;
+              const dimmed = autoGradient && !isEdge;
+              return (
+                <div className="ms-row" key={stop.depth} style={dimmed ? { opacity: 0.5 } : undefined}>
+                  <span className="ms-depth-label">{depthLabel(stop.depth)}</span>
+                  <input
+                    type="color"
+                    className="ms-color-input"
+                    value={stop.color}
+                    onChange={(e) => updateDepthStop(i, e.target.value)}
+                    disabled={dimmed}
+                  />
+                  <span className="ms-hex">{stop.color}</span>
+                </div>
+              );
+            })}
+          </div>
+
+          {/* ── Depth font size ───────────────────────────── */}
+          <div className="ms-section">
+            <div className="ms-label">수심 폰트 크기</div>
+            <div className="tog" style={{ gap: 3 }}>
+              {FONT_SIZES.map((fs) => (
+                <div
+                  key={fs.value}
+                  className={`tog-btn${value.depthFontSize === fs.value ? ' on' : ''}`}
+                  onClick={() => update('depthFontSize', fs.value)}
+                >
+                  {fs.label}
+                </div>
+              ))}
+            </div>
+          </div>
+
+          {/* ── Depth font color ──────────────────────────── */}
+          <div className="ms-section">
+            <div className="ms-label">수심 폰트 색상</div>
+            <div className="ms-row">
+              <input
+                type="color"
+                className="ms-color-input"
+                value={value.depthFontColor}
+                onChange={(e) => update('depthFontColor', e.target.value)}
+              />
+              <span className="ms-hex">{value.depthFontColor}</span>
+            </div>
+          </div>
+
+          {/* ── Reset ─────────────────────────────────────── */}
+          <button
+            className="ms-reset"
+            type="button"
+            onClick={() => {
+              onChange(DEFAULT_MAP_STYLE_SETTINGS);
+              setAutoGradient(false);
+            }}
+          >
+            초기화
+          </button>
+        </div>
+      )}
+    </>
+  );
+}

apps/web/src/features/mapSettings/types.ts

@@ -0,0 +1,32 @@
+export type MapLabelLanguage = 'ko' | 'en' | 'ja' | 'zh' | 'local';
+export type DepthFontSize = 'small' | 'medium' | 'large';
+
+export interface DepthColorStop {
+  depth: number;
+  color: string;
+}
+
+export interface MapStyleSettings {
+  labelLanguage: MapLabelLanguage;
+  landColor: string;
+  waterBaseColor: string;
+  depthStops: DepthColorStop[];
+  depthFontSize: DepthFontSize;
+  depthFontColor: string;
+}
+
+export const DEFAULT_MAP_STYLE_SETTINGS: MapStyleSettings = {
+  labelLanguage: 'ko',
+  landColor: '#1a1a2e',
+  waterBaseColor: '#14606e',
+  depthStops: [
+    { depth: -8000, color: '#010610' },
+    { depth: -4000, color: '#030c1c' },
+    { depth: -2000, color: '#041022' },
+    { depth: -1000, color: '#051529' },
+    { depth: -500, color: '#061a30' },
+    { depth: -100, color: '#08263d' },
+  ],
+  depthFontSize: 'medium',
+  depthFontColor: '#e2e8f0',
+};

apps/web/src/pages/dashboard/DashboardPage.tsx

@@ -24,6 +24,10 @@ import { Topbar } from "../../widgets/topbar/Topbar";
 import { VesselInfoPanel } from "../../widgets/info/VesselInfoPanel";
 import { SubcableInfoPanel } from "../../widgets/subcableInfo/SubcableInfoPanel";
 import { VesselList } from "../../widgets/vesselList/VesselList";
+import { MapSettingsPanel } from "../../features/mapSettings/MapSettingsPanel";
+import { DepthLegend } from "../../widgets/legend/DepthLegend";
+import { DEFAULT_MAP_STYLE_SETTINGS } from "../../features/mapSettings/types";
+import type { MapStyleSettings } from "../../features/mapSettings/types";
 import {
   buildLegacyHitMap,
   computeCountsByType,
@@ -109,8 +113,11 @@ export function DashboardPage() {
   const [showTargets, setShowTargets] = useState(true);
   const [showOthers, setShowOthers] = useState(false);
 
-  const [baseMap, setBaseMap] = useState<BaseMapId>("enhanced");
+  // 레거시 베이스맵 비활성 — 향후 위성/라이트 등 추가 시 재활용
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  const [baseMap, _setBaseMap] = useState<BaseMapId>("enhanced");
   const [projection, setProjection] = useState<MapProjectionId>("mercator");
+  const [mapStyleSettings, setMapStyleSettings] = useState<MapStyleSettings>(DEFAULT_MAP_STYLE_SETTINGS);
 
   const [overlays, setOverlays] = useState<MapToggleState>({
     pairLines: true,
@@ -352,30 +359,28 @@ export function DashboardPage() {
         </div>
 
         <div className="sb">
-          <div className="sb-t">지도 표시 설정</div>
-          <MapToggles value={overlays} onToggle={(k) => setOverlays((prev) => ({ ...prev, [k]: !prev[k] }))} />
-          <div style={{ fontSize: 9, fontWeight: 700, color: "var(--muted)", letterSpacing: 1.5, marginTop: 8, marginBottom: 6 }}>
-            베이스맵
+          <div className="sb-t" style={{ display: "flex", alignItems: "center" }}>
+            지도 표시 설정
+            <div style={{ flex: 1 }} />
+            <div
+              className={`tog-btn ${projection === "globe" ? "on" : ""}`}
+              onClick={() => setProjection((p) => (p === "globe" ? "mercator" : "globe"))}
+              title="3D 지구본 투영: 드래그로 회전, 휠로 확대/축소"
+              style={{ fontSize: 9, padding: "2px 8px" }}
+            >
+              3D
+            </div>
           </div>
-          <div className="tog" style={{ flexWrap: "nowrap", alignItems: "center" }}>
+          <MapToggles value={overlays} onToggle={(k) => setOverlays((prev) => ({ ...prev, [k]: !prev[k] }))} />
+          {/* 베이스맵 선택 — 현재 enhanced 단일 맵 사용, 레거시는 비활성
+          <div className="tog" style={{ flexWrap: "nowrap", alignItems: "center", marginTop: 8 }}>
             <div className={`tog-btn ${baseMap === "enhanced" ? "on" : ""}`} onClick={() => setBaseMap("enhanced")} title="현재 지도(해저지형/3D 표현 포함)">
               기본
             </div>
             <div className={`tog-btn ${baseMap === "legacy" ? "on" : ""}`} onClick={() => setBaseMap("legacy")} title="레거시 대시보드(Carto Dark) 베이스맵">
               레거시
             </div>
-
-            <div style={{ flex: 1 }} />
-
-            <div
-              className={`tog-btn ${projection === "globe" ? "on" : ""}`}
-              onClick={() => setProjection((p) => (p === "globe" ? "mercator" : "globe"))}
-              title="지구본(globe) 투영: 드래그로 회전, 휠로 확대/축소"
-            >
-              지구본
-            </div>
-          </div>
-          {/* Attribution (license) stays visible in the map UI; no need to repeat it here. */}
+          </div> */}
         </div>
 
         <div className="sb">
@@ -722,7 +727,10 @@ export function DashboardPage() {
           hoveredCableId={hoveredCableId}
           onHoverCable={setHoveredCableId}
           onClickCable={(id) => setSelectedCableId((prev) => (prev === id ? null : id))}
+          mapStyleSettings={mapStyleSettings}
         />
+        <MapSettingsPanel value={mapStyleSettings} onChange={setMapStyleSettings} />
+        <DepthLegend depthStops={mapStyleSettings.depthStops} />
         <MapLegend />
         {selectedLegacyVessel ? (
           <VesselInfoPanel vessel={selectedLegacyVessel} allVessels={legacyVesselsAll} onClose={() => setSelectedMmsi(null)} onSelectMmsi={setSelectedMmsi} />

apps/web/src/widgets/legend/DepthLegend.tsx

@@ -0,0 +1,33 @@
+import { useMemo } from 'react';
+import type { DepthColorStop } from '../../features/mapSettings/types';
+
+interface DepthLegendProps {
+  depthStops: DepthColorStop[];
+}
+
+export function DepthLegend({ depthStops }: DepthLegendProps) {
+  const sorted = useMemo(
+    () => [...depthStops].sort((a, b) => a.depth - b.depth),
+    [depthStops],
+  );
+
+  const gradient = useMemo(() => {
+    if (sorted.length === 0) return 'transparent';
+    const stops = sorted.map((s, i) => {
+      const pct = (i / (sorted.length - 1)) * 100;
+      return `${s.color} ${pct.toFixed(0)}%`;
+    });
+    return `linear-gradient(to bottom, ${stops.join(', ')})`;
+  }, [sorted]);
+
+  return (
+    <div className="depth-legend">
+      <div className="depth-legend__bar" style={{ background: gradient }} />
+      <div className="depth-legend__ticks">
+        {sorted.map((s) => (
+          <span key={s.depth}>{Math.abs(s.depth).toLocaleString()}m</span>
+        ))}
+      </div>
+    </div>
+  );
+}

apps/web/src/widgets/map3d/Map3D.tsx

@@ -26,6 +26,7 @@ import { useGlobeOverlays } from './hooks/useGlobeOverlays';
 import { useGlobeInteraction } from './hooks/useGlobeInteraction';
 import { useDeckLayers } from './hooks/useDeckLayers';
 import { useSubcablesLayer } from './hooks/useSubcablesLayer';
+import { useMapStyleSettings } from './hooks/useMapStyleSettings';
 
 export type { Map3DSettings, BaseMapId, MapProjectionId } from './types';
 
@@ -64,6 +65,7 @@ export function Map3D({
   hoveredCableId = null,
   onHoverCable,
   onClickCable,
+  mapStyleSettings,
 }: Props) {
   void onHoverFleet;
   void onClearFleetHover;
@@ -448,6 +450,8 @@ export function Map3D({
     { baseMap, projection, showSeamark: settings.showSeamark, mapSyncEpoch, pulseMapSync },
   );
 
+  useMapStyleSettings(mapRef, mapStyleSettings, { baseMap, mapSyncEpoch });
+
   useZonesLayer(
     mapRef, projectionBusyRef, reorderGlobeFeatureLayers,
     { zones, overlays, projection, baseMap, hoveredZoneId, mapSyncEpoch },

apps/web/src/widgets/map3d/constants.ts

@@ -3,7 +3,6 @@ import {
   OVERLAY_RGB,
   rgba as rgbaCss,
 } from '../../shared/lib/map/palette';
-import type { BathyZoomRange } from './types';
 
 // ── Re-export palette aliases used throughout Map3D ──
 
@@ -158,9 +157,5 @@ export const FLEET_LINE_ML = rgbaCss(OVERLAY_FLEET_RANGE_RGB, 0.65);
 export const FLEET_LINE_ML_HL = rgbaCss(OVERLAY_FLEET_RANGE_RGB, 0.95);
 
 // ── Bathymetry zoom ranges ──
-
-export const BATHY_ZOOM_RANGES: BathyZoomRange[] = [
-  { id: 'bathymetry-fill', mercator: [5, 24], globe: [7, 24] },
-  { id: 'bathymetry-borders', mercator: [5, 24], globe: [7, 24] },
-  { id: 'bathymetry-borders-major', mercator: [3, 24], globe: [7, 24] },
-];
+// NOTE: BATHY_ZOOM_RANGES는 bathymetry.ts에서 로컬 정의 + applyBathymetryZoomProfile()에서 사용
+// 이 파일의 export는 사용처가 없어 제거됨 (2026-02-16)

apps/web/src/widgets/map3d/hooks/useMapStyleSettings.ts

@@ -0,0 +1,179 @@
+import { useEffect, useRef, type MutableRefObject } from 'react';
+import maplibregl from 'maplibre-gl';
+import type { MapStyleSettings, MapLabelLanguage, DepthColorStop, DepthFontSize } from '../../../features/mapSettings/types';
+import type { BaseMapId } from '../types';
+import { kickRepaint, onMapStyleReady } from '../lib/mapCore';
+
+/* ── Depth font size presets ──────────────────────────────────────── */
+const DEPTH_FONT_SIZE_MAP: Record<DepthFontSize, unknown[]> = {
+  small: ['interpolate', ['linear'], ['zoom'], 7, 8, 9, 9, 11, 11, 13, 13],
+  medium: ['interpolate', ['linear'], ['zoom'], 7, 10, 9, 12, 11, 14, 13, 16],
+  large: ['interpolate', ['linear'], ['zoom'], 7, 12, 9, 15, 11, 18, 13, 20],
+};
+
+/* ── Helpers ──────────────────────────────────────────────────────── */
+function darkenHex(hex: string, factor = 0.85): string {
+  const r = parseInt(hex.slice(1, 3), 16);
+  const g = parseInt(hex.slice(3, 5), 16);
+  const b = parseInt(hex.slice(5, 7), 16);
+  return `#${[r, g, b].map((c) => Math.round(c * factor).toString(16).padStart(2, '0')).join('')}`;
+}
+
+function lightenHex(hex: string, factor = 1.3): string {
+  const r = parseInt(hex.slice(1, 3), 16);
+  const g = parseInt(hex.slice(3, 5), 16);
+  const b = parseInt(hex.slice(5, 7), 16);
+  return `#${[r, g, b].map((c) => Math.min(255, Math.round(c * factor)).toString(16).padStart(2, '0')).join('')}`;
+}
+
+/* ── Apply functions ──────────────────────────────────────────────── */
+
+function applyLabelLanguage(map: maplibregl.Map, lang: MapLabelLanguage) {
+  const style = map.getStyle();
+  if (!style?.layers) return;
+  for (const layer of style.layers) {
+    if (layer.type !== 'symbol') continue;
+    const layout = (layer as { layout?: Record<string, unknown> }).layout;
+    if (!layout?.['text-field']) continue;
+    if (layer.id === 'bathymetry-labels') continue;
+    const textField =
+      lang === 'local'
+        ? ['get', 'name']
+        : ['coalesce', ['get', `name:${lang}`], ['get', 'name']];
+    try {
+      map.setLayoutProperty(layer.id, 'text-field', textField);
+    } catch {
+      // ignore
+    }
+  }
+}
+
+function applyLandColor(map: maplibregl.Map, color: string) {
+  const style = map.getStyle();
+  if (!style?.layers) return;
+  const waterRegex = /(water|sea|ocean|river|lake|coast|bay)/i;
+  const darkVariant = darkenHex(color, 0.8);
+  for (const layer of style.layers) {
+    const id = layer.id;
+    if (id.startsWith('bathymetry-')) continue;
+    if (id.startsWith('subcables-')) continue;
+    if (id.startsWith('zones-')) continue;
+    if (id.startsWith('ships-')) continue;
+    if (id.startsWith('pair-')) continue;
+    if (id.startsWith('fc-')) continue;
+    if (id.startsWith('fleet-')) continue;
+    if (id.startsWith('predict-')) continue;
+    if (id === 'deck-globe') continue;
+    const sourceLayer = String((layer as Record<string, unknown>)['source-layer'] ?? '');
+    const isWater = waterRegex.test(id) || waterRegex.test(sourceLayer);
+    if (isWater) continue;
+    try {
+      if (layer.type === 'background') {
+        map.setPaintProperty(id, 'background-color', color);
+      } else if (layer.type === 'fill') {
+        map.setPaintProperty(id, 'fill-color', darkVariant);
+      }
+    } catch {
+      // ignore
+    }
+  }
+}
+
+function applyWaterBaseColor(map: maplibregl.Map, fillColor: string) {
+  const style = map.getStyle();
+  if (!style?.layers) return;
+  const waterRegex = /(water|sea|ocean|river|lake|coast|bay)/i;
+  const lineColor = darkenHex(fillColor, 0.85);
+  for (const layer of style.layers) {
+    const id = layer.id;
+    if (id.startsWith('bathymetry-')) continue;
+    const sourceLayer = String((layer as Record<string, unknown>)['source-layer'] ?? '');
+    if (!waterRegex.test(id) && !waterRegex.test(sourceLayer)) continue;
+    try {
+      if (layer.type === 'fill') {
+        map.setPaintProperty(id, 'fill-color', fillColor);
+      } else if (layer.type === 'line') {
+        map.setPaintProperty(id, 'line-color', lineColor);
+      }
+    } catch {
+      // ignore
+    }
+  }
+}
+
+function applyDepthGradient(map: maplibregl.Map, stops: DepthColorStop[]) {
+  if (!map.getLayer('bathymetry-fill')) return;
+  const depth = ['to-number', ['get', 'depth']];
+  const sorted = [...stops].sort((a, b) => a.depth - b.depth);
+  const expr: unknown[] = ['interpolate', ['linear'], depth];
+  const deepest = sorted[0];
+  if (deepest) expr.push(-11000, darkenHex(deepest.color, 0.5));
+  for (const s of sorted) {
+    expr.push(s.depth, s.color);
+  }
+  const shallowest = sorted[sorted.length - 1];
+  if (shallowest) expr.push(0, lightenHex(shallowest.color, 1.8));
+  try {
+    map.setPaintProperty('bathymetry-fill', 'fill-color', expr as never);
+  } catch {
+    // ignore
+  }
+}
+
+function applyDepthFontSize(map: maplibregl.Map, size: DepthFontSize) {
+  const expr = DEPTH_FONT_SIZE_MAP[size];
+  for (const layerId of ['bathymetry-labels', 'bathymetry-landforms']) {
+    if (!map.getLayer(layerId)) continue;
+    try {
+      map.setLayoutProperty(layerId, 'text-size', expr);
+    } catch {
+      // ignore
+    }
+  }
+}
+
+function applyDepthFontColor(map: maplibregl.Map, color: string) {
+  for (const layerId of ['bathymetry-labels', 'bathymetry-landforms']) {
+    if (!map.getLayer(layerId)) continue;
+    try {
+      map.setPaintProperty(layerId, 'text-color', color);
+    } catch {
+      // ignore
+    }
+  }
+}
+
+/* ── Hook ──────────────────────────────────────────────────────────── */
+export function useMapStyleSettings(
+  mapRef: MutableRefObject<maplibregl.Map | null>,
+  settings: MapStyleSettings | undefined,
+  opts: { baseMap: BaseMapId; mapSyncEpoch: number },
+) {
+  const settingsRef = useRef(settings);
+  useEffect(() => {
+    settingsRef.current = settings;
+  });
+
+  const { baseMap, mapSyncEpoch } = opts;
+
+  useEffect(() => {
+    const map = mapRef.current;
+    const s = settingsRef.current;
+    if (!map || !s) return;
+
+    const stop = onMapStyleReady(map, () => {
+      applyLabelLanguage(map, s.labelLanguage);
+      applyLandColor(map, s.landColor);
+      applyWaterBaseColor(map, s.waterBaseColor);
+      if (baseMap === 'enhanced') {
+        applyDepthGradient(map, s.depthStops);
+        applyDepthFontSize(map, s.depthFontSize);
+        applyDepthFontColor(map, s.depthFontColor);
+      }
+      kickRepaint(map);
+    });
+
+    return () => stop();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [settings, baseMap, mapSyncEpoch]);
+}

apps/web/src/widgets/map3d/layers/bathymetry.ts

@@ -6,10 +6,13 @@ import maplibregl, {
 import type { BaseMapId, BathyZoomRange, MapProjectionId } from '../types';
 import { getLayerId, getMapTilerKey } from '../lib/mapCore';
 
+export const SHALLOW_WATER_FILL_DEFAULT = '#14606e';
+export const SHALLOW_WATER_LINE_DEFAULT = '#114f5c';
+
 const BATHY_ZOOM_RANGES: BathyZoomRange[] = [
-  { id: 'bathymetry-fill', mercator: [6, 24], globe: [8, 24] },
-  { id: 'bathymetry-borders', mercator: [6, 24], globe: [8, 24] },
-  { id: 'bathymetry-borders-major', mercator: [4, 24], globe: [8, 24] },
+  { id: 'bathymetry-fill', mercator: [3, 24], globe: [3, 24] },
+  { id: 'bathymetry-borders', mercator: [5, 24], globe: [5, 24] },
+  { id: 'bathymetry-borders-major', mercator: [3, 24], globe: [3, 24] },
 ];
 
 export function injectOceanBathymetryLayers(style: StyleSpecification, maptilerKey: string) {
@@ -66,7 +69,7 @@ export function injectOceanBathymetryLayers(style: StyleSpecification, maptilerK
     type: 'fill',
     source: oceanSourceId,
     'source-layer': 'contour',
-    minzoom: 5,
+    minzoom: 3,
     maxzoom: 24,
     paint: {
       'fill-color': bathyFillColor,
@@ -79,7 +82,7 @@ export function injectOceanBathymetryLayers(style: StyleSpecification, maptilerK
     type: 'line',
     source: oceanSourceId,
     'source-layer': 'contour',
-    minzoom: 5,
+    minzoom: 5,  // fill은 3부터, borders는 5부터
     maxzoom: 24,
     paint: {
       'line-color': 'rgba(255,255,255,0.06)',
@@ -159,22 +162,22 @@ export function injectOceanBathymetryLayers(style: StyleSpecification, maptilerK
     type: 'symbol',
     source: oceanSourceId,
     'source-layer': 'contour_line',
-    minzoom: 10,
+    minzoom: 7,
     filter: bathyMajorDepthFilter as unknown as unknown[],
     layout: {
       'symbol-placement': 'line',
       'text-field': depthLabel,
       'text-font': ['Noto Sans Regular', 'Open Sans Regular'],
-      'text-size': ['interpolate', ['linear'], ['zoom'], 10, 12, 12, 14, 14, 15],
+      'text-size': ['interpolate', ['linear'], ['zoom'], 7, 10, 9, 12, 11, 14, 13, 16],
       'text-allow-overlap': false,
-      'text-padding': 2,
+      'text-padding': 4,
       'text-rotation-alignment': 'map',
     },
     paint: {
-      'text-color': 'rgba(226,232,240,0.72)',
-      'text-halo-color': 'rgba(2,6,23,0.82)',
-      'text-halo-width': 1.0,
-      'text-halo-blur': 0.6,
+      'text-color': 'rgba(226,232,240,0.78)',
+      'text-halo-color': 'rgba(2,6,23,0.88)',
+      'text-halo-width': 1.2,
+      'text-halo-blur': 0.5,
     },
   } as unknown as LayerSpecification;
 
@@ -183,21 +186,21 @@ export function injectOceanBathymetryLayers(style: StyleSpecification, maptilerK
     type: 'symbol',
     source: oceanSourceId,
     'source-layer': 'landform',
-    minzoom: 8,
+    minzoom: 6,
     filter: ['has', 'name'] as unknown as unknown[],
     layout: {
       'text-field': ['get', 'name'] as unknown as unknown[],
       'text-font': ['Noto Sans Italic', 'Noto Sans Regular', 'Open Sans Italic', 'Open Sans Regular'],
-      'text-size': ['interpolate', ['linear'], ['zoom'], 8, 11, 10, 12, 12, 13],
+      'text-size': ['interpolate', ['linear'], ['zoom'], 6, 10, 8, 12, 10, 13, 12, 14],
       'text-allow-overlap': false,
       'text-anchor': 'center',
       'text-offset': [0, 0.0],
     },
     paint: {
-      'text-color': 'rgba(148,163,184,0.70)',
-      'text-halo-color': 'rgba(2,6,23,0.85)',
-      'text-halo-width': 1.0,
-      'text-halo-blur': 0.7,
+      'text-color': 'rgba(148,163,184,0.75)',
+      'text-halo-color': 'rgba(2,6,23,0.88)',
+      'text-halo-width': 1.2,
+      'text-halo-blur': 0.6,
     },
   } as unknown as LayerSpecification;
 
@@ -209,8 +212,8 @@ export function injectOceanBathymetryLayers(style: StyleSpecification, maptilerK
   // Brighten base-map water fills so shallow coasts, rivers & lakes blend naturally
   // with the bathymetry gradient instead of appearing as near-black voids.
   const waterRegex = /(water|sea|ocean|river|lake|coast|bay)/i;
-  const SHALLOW_WATER_FILL = '#14606e';
-  const SHALLOW_WATER_LINE = '#114f5c';
+  const SHALLOW_WATER_FILL = SHALLOW_WATER_FILL_DEFAULT;
+  const SHALLOW_WATER_LINE = SHALLOW_WATER_LINE_DEFAULT;
   for (const layer of layers) {
     const id = getLayerId(layer);
     if (!id) continue;
@@ -272,6 +275,19 @@ export function applyBathymetryZoomProfile(map: maplibregl.Map, baseMap: BaseMap
   }
 }
 
+function applyKoreanLabels(style: StyleSpecification) {
+  if (!style.layers) return;
+  const koTextField = ['coalesce', ['get', 'name:ko'], ['get', 'name']];
+  for (const layer of style.layers as unknown as LayerSpecification[]) {
+    if ((layer as { type?: string }).type !== 'symbol') continue;
+    const layout = (layer as Record<string, unknown>).layout as
+      | Record<string, unknown>
+      | undefined;
+    if (!layout?.['text-field']) continue;
+    layout['text-field'] = koTextField;
+  }
+}
+
 export async function resolveInitialMapStyle(signal: AbortSignal): Promise<string | StyleSpecification> {
   const key = getMapTilerKey();
   if (!key) return '/map/styles/osm-seamark.json';
@@ -282,11 +298,14 @@ export async function resolveInitialMapStyle(signal: AbortSignal): Promise<strin
   const res = await fetch(styleUrl, { signal, headers: { accept: 'application/json' } });
   if (!res.ok) throw new Error(`MapTiler style fetch failed: ${res.status} ${res.statusText}`);
   const json = (await res.json()) as StyleSpecification;
+  applyKoreanLabels(json);
   injectOceanBathymetryLayers(json, key);
   return json;
 }
 
 export async function resolveMapStyle(baseMap: BaseMapId, signal: AbortSignal): Promise<string | StyleSpecification> {
-  if (baseMap === 'legacy') return '/map/styles/carto-dark.json';
+  // 레거시 베이스맵 비활성 — 향후 위성/라이트 테마 등 추가 시 재활용
+  // if (baseMap === 'legacy') return '/map/styles/carto-dark.json';
+  void baseMap;
   return resolveInitialMapStyle(signal);
 }

apps/web/src/widgets/map3d/types.ts

@@ -4,6 +4,7 @@ import type { SubcableGeoJson } from '../../entities/subcable/model/types';
 import type { ZonesGeoJson } from '../../entities/zone/api/useZones';
 import type { MapToggleState } from '../../features/mapToggles/MapToggles';
 import type { FcLink, FleetCircle, PairLink } from '../../features/legacyDashboard/model/types';
+import type { MapStyleSettings } from '../../features/mapSettings/types';
 
 export type Map3DSettings = {
   showSeamark: boolean;
@@ -50,6 +51,7 @@ export interface Map3DProps {
   hoveredCableId?: string | null;
   onHoverCable?: (cableId: string | null) => void;
   onClickCable?: (cableId: string | null) => void;
+  mapStyleSettings?: MapStyleSettings;
 }
 
 export type DashSeg = {