diff --git a/src/i18n/de.ts b/src/i18n/de.ts
index c22a0cb..bd551dd 100644
--- a/src/i18n/de.ts
+++ b/src/i18n/de.ts
@@ -500,6 +500,10 @@ export const de = {
   "resources.col.prio.hint": "Höhere Priorität läuft am Stoß durch",
   "resources.col.texture": "Textur",
   "resources.col.material": "Material",
+  "resources.col.foreground": "Vordergrund",
+  "resources.col.foreground.hint": "Farbe der Muster-/Schraffurlinien (Vordergrund)",
+  "resources.col.background": "Hintergrund",
+  "resources.col.background.hint": "Füllfarbe (Poché/Hintergrund)",
   "resources.delete.component": "Bauteil „{name}\" löschen",
 
   // 3D-Material (PBR) — Bibliotheks-Auswahl + Upload.
@@ -553,6 +557,22 @@ export const de = {
   "resources.lineStyle.none": "— ohne —",
   "resources.delete.hatch": "Schraffur „{name}\" löschen",
 
+  // Schraffur-/Linien-Typ (Master-Detail-Editor).
+  "resources.field.type": "Typ",
+  "resources.field.lines": "Striche",
+  "resources.field.image": "Bild",
+  "resources.field.scaleX": "Skalierung X",
+  "resources.field.scaleY": "Skalierung Y",
+  "resources.field.rotation": "Rotation °",
+  "resources.field.amplitude": "Amplitude",
+  "resources.field.wavelength": "Wellenlänge",
+  "resources.hatchKind.vector": "Vektor",
+  "resources.hatchKind.image": "Bild",
+  "resources.lines.parallel": "Parallel",
+  "resources.lines.random": "Zufällig",
+  "resources.lineKind.dash": "Strich",
+  "resources.lineKind.zigzag": "Zickzack",
+
   // Schraffur-Muster.
   "pattern.none": "Ohne",
   "pattern.solid": "Vollfläche",
diff --git a/src/i18n/en.ts b/src/i18n/en.ts
index 5f7bd8c..5a0159c 100644
--- a/src/i18n/en.ts
+++ b/src/i18n/en.ts
@@ -496,6 +496,10 @@ export const en: Record<TranslationKey, string> = {
   "resources.col.prio.hint": "Higher priority runs through at the join",
   "resources.col.texture": "Texture",
   "resources.col.material": "Material",
+  "resources.col.foreground": "Foreground",
+  "resources.col.foreground.hint": "Color of the pattern/hatch lines (foreground)",
+  "resources.col.background": "Background",
+  "resources.col.background.hint": "Fill color (poché/background)",
   "resources.delete.component": "Delete component “{name}”",
 
   // 3D material (PBR) — built-in library + upload.
@@ -548,6 +552,22 @@ export const en: Record<TranslationKey, string> = {
   "resources.lineStyle.none": "— none —",
   "resources.delete.hatch": "Delete hatch “{name}”",
 
+  // Hatch/line type (master-detail editor).
+  "resources.field.type": "Type",
+  "resources.field.lines": "Lines",
+  "resources.field.image": "Image",
+  "resources.field.scaleX": "Scale X",
+  "resources.field.scaleY": "Scale Y",
+  "resources.field.rotation": "Rotation °",
+  "resources.field.amplitude": "Amplitude",
+  "resources.field.wavelength": "Wavelength",
+  "resources.hatchKind.vector": "Vector",
+  "resources.hatchKind.image": "Image",
+  "resources.lines.parallel": "Parallel",
+  "resources.lines.random": "Random",
+  "resources.lineKind.dash": "Dash",
+  "resources.lineKind.zigzag": "Zigzag",
+
   "pattern.none": "None",
   "pattern.solid": "Solid",
   "pattern.insulation": "Insulation",
diff --git a/src/styles.css b/src/styles.css
index 400e16c..1a03053 100644
--- a/src/styles.css
+++ b/src/styles.css
@@ -2315,6 +2315,178 @@ body {
   background: var(--panel-2);
 }
 
+/* ── Master-Detail (Schraffuren / Linien): Liste links, Detail rechts ──────── */
+.res-md {
+  display: grid;
+  grid-template-columns: 240px 1fr;
+  gap: 14px;
+  align-items: start;
+  min-height: 320px;
+}
+.res-md-list {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  padding: 6px;
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  background: var(--panel-2);
+  max-height: 62vh;
+  overflow-y: auto;
+}
+.res-md-row {
+  display: flex;
+  align-items: center;
+  gap: 9px;
+  width: 100%;
+  padding: 6px 8px;
+  border: 1px solid transparent;
+  border-radius: 8px;
+  background: transparent;
+  color: var(--ink);
+  font-family: inherit;
+  font-size: 12px;
+  text-align: left;
+  cursor: pointer;
+  transition: background 0.12s, border-color 0.12s;
+}
+.res-md-row:hover {
+  background: var(--accent-dim);
+}
+.res-md-row.active {
+  background: var(--accent-dim);
+  border-color: var(--accent-border);
+  color: var(--accent);
+}
+.res-md-row-thumb {
+  flex: 0 0 auto;
+  display: inline-flex;
+}
+.res-md-row-name {
+  flex: 1 1 auto;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font-weight: 550;
+}
+/* Linien-Zeile: Name oben schmal, Swatch daneben rechts. */
+.res-md-row-line .res-line-preview {
+  flex: 0 0 auto;
+  width: 150px;
+  min-width: 0;
+}
+.res-md-listfoot {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  padding: 8px 4px 2px;
+}
+.res-md-empty {
+  padding: 22px 14px;
+  text-align: center;
+  font-size: 12px;
+  color: var(--muted);
+}
+
+/* Detail-Panel (rechts). */
+.res-md-detail {
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  background: var(--panel-2);
+  min-height: 300px;
+}
+.res-md-detail-inner {
+  display: flex;
+  flex-direction: column;
+  gap: 14px;
+  padding: 14px 16px 18px;
+}
+.res-md-head {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+}
+.res-md-rename {
+  flex: 1 1 auto;
+  font-size: 13px;
+  font-weight: 600;
+}
+.res-md-preview {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 16px;
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  background: var(--input);
+  color: var(--ink);
+}
+.res-md-preview .res-line-preview {
+  border: none;
+  background: transparent;
+}
+
+/* Detail-Felder: Label links, Steuerelement rechts. */
+.res-fields {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+.res-field {
+  display: grid;
+  grid-template-columns: 120px 1fr;
+  align-items: center;
+  gap: 12px;
+}
+.res-field-label {
+  font-size: 12px;
+  color: var(--muted);
+}
+.res-field-control {
+  display: flex;
+  align-items: center;
+  min-width: 0;
+}
+.res-field-control > * {
+  min-width: 0;
+}
+
+/* Segmentierter Umschalter (Pillen-Gruppe). */
+.res-seg {
+  display: inline-flex;
+  gap: 2px;
+  padding: 2px;
+  border: 1px solid var(--border);
+  border-radius: 999px;
+  background: var(--input);
+}
+.res-seg-btn {
+  border: none;
+  background: transparent;
+  color: var(--muted);
+  font-family: inherit;
+  font-size: 11px;
+  font-weight: 600;
+  letter-spacing: 0.02em;
+  padding: 4px 14px;
+  border-radius: 999px;
+  cursor: pointer;
+  transition: background 0.12s, color 0.12s;
+}
+.res-seg-btn:hover {
+  color: var(--ink);
+}
+.res-seg-btn.active {
+  background: var(--accent);
+  color: #fff;
+}
+
+/* Schraffur-Swatch (kleine Vorschau in Liste + große im Detail). */
+.res-swatch {
+  border-radius: 3px;
+}
+
 /* ══ Panel-Chrome (Andockrahmen: Docks, Tabs, Panel-Rahmen) ═══════════════════
    Der erweiterbare Rahmen: links/rechts je ein Dock mit Tab-Leiste und dem
    aktiven Panel. Greift dieselben Tokens wie die nav- und res-Klassen (dunkles DOSSIER-
diff --git a/src/ui/ResourceManager.tsx b/src/ui/ResourceManager.tsx
index 2936ca8..33fbd8d 100644
--- a/src/ui/ResourceManager.tsx
+++ b/src/ui/ResourceManager.tsx
@@ -42,6 +42,7 @@ import {
 } from "../materials/ambientcg";
 import { requestMaterialPreview, cancelMaterialPreview } from "../materials/spherePreview";
 import { EyeIcon } from "./EyeIcon";
+import { HatchSwatch, LineSwatch } from "./hatchPreview";
 import { t } from "../i18n";
 
 // ── Auswahl-Optionen (UI-Beschriftung übersetzt, Werte englisch) ───────────
@@ -210,6 +211,62 @@ function DeleteButton({ onClick, title }: { onClick: () => void; title: string }
   );
 }
 
+// ── Master-Detail-Bausteine (DOSSIER-Stil: Liste links, Detail rechts) ──────
+
+/**
+ * Segmentierter Umschalter (Pillen-Gruppe) für kleine, sich ausschließende
+ * Auswahlen — z. B. Schraffur-Typ Vektor/Bild oder Linien-Typ Strich/Zickzack.
+ */
+function Segmented<T extends string>({
+  value,
+  onChange,
+  options,
+}: {
+  value: T;
+  onChange: (v: T) => void;
+  options: { value: T; label: string }[];
+}) {
+  return (
+    <div className="res-seg" role="group">
+      {options.map((o) => (
+        <button
+          key={o.value}
+          type="button"
+          className={`res-seg-btn${value === o.value ? " active" : ""}`}
+          aria-pressed={value === o.value}
+          onClick={() => onChange(o.value)}
+        >
+          {o.label}
+        </button>
+      ))}
+    </div>
+  );
+}
+
+/**
+ * Eine beschriftete Detail-Zeile (Label links, Steuerelement rechts). Bewusst
+ * ein <div> (kein <label>): Zeilen enthalten teils mehrere interaktive Elemente
+ * (Segmented-Buttons), und ein umschließendes <label> würde den Klick an das
+ * ERSTE labelbare Kind umleiten — das würde einen Segment-Klick sofort wieder
+ * zurücksetzen. Die Steuerelemente sind selbst klickbar; ein Label ist unnötig.
+ */
+function FieldRow({
+  label,
+  hint,
+  children,
+}: {
+  label: string;
+  hint?: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <div className="res-field" title={hint}>
+      <span className="res-field-label">{label}</span>
+      <span className="res-field-control">{children}</span>
+    </div>
+  );
+}
+
 // ── Tabellen-Gerüst ────────────────────────────────────────────────────────
 
 /** Eine Spaltendefinition: Titel-Key + optionale rechtsbündige Ausrichtung. */
@@ -283,10 +340,11 @@ function ResCell({
 
 // ── Bauteile (Components) ──────────────────────────────────────────────────
 
-// Spalten: Name | Farbe | Schnittschraffur | Ansichtsschraffur | Prio | Textur | Material | (löschen).
+// Spalten: Name | Vordergrund | Hintergrund | Schnittschraffur | Ansichtsschraffur | Prio | Textur | Material | (löschen).
 const COMPONENT_COLUMNS: ResColumn[] = [
   { titleKey: "resources.col.name" },
-  { titleKey: "resources.col.color" },
+  { titleKey: "resources.col.foreground", hintKey: "resources.col.foreground.hint" },
+  { titleKey: "resources.col.background", hintKey: "resources.col.background.hint" },
   { titleKey: "resources.col.hatch" },
   { titleKey: "resources.col.viewHatch" },
   {
@@ -299,7 +357,7 @@ const COMPONENT_COLUMNS: ResColumn[] = [
   { titleKey: "" },
 ];
 const COMPONENT_TEMPLATE =
-  "minmax(120px, 1fr) auto minmax(120px, 0.8fr) minmax(120px, 0.8fr) 64px minmax(90px, 0.7fr) minmax(130px, 0.9fr) 36px";
+  "minmax(120px, 1fr) auto auto minmax(120px, 0.8fr) minmax(120px, 0.8fr) 64px minmax(90px, 0.7fr) minmax(130px, 0.9fr) 36px";
 
 /**
  * Material-Zelle der Bauteil-Tabelle: ein Button, der den aktuellen Material-
@@ -782,9 +840,18 @@ function ComponentRow({
         />
       </ResCell>
       <ResCell>
+        {/* Vordergrund = Farbe der Muster-/Schraffurlinien. Fehlt sie, greift
+            als Anzeige-Fallback `color`; das Setzen definiert `foreground`. */}
         <ColorField
-          color={component.color}
-          onChange={(color) => onPatch({ color })}
+          color={component.foreground ?? component.color}
+          onChange={(foreground) => onPatch({ foreground })}
+        />
+      </ResCell>
+      <ResCell>
+        {/* Hintergrund = Füllung (Poché). Fehlt sie, gilt `color` als Fallback. */}
+        <ColorField
+          color={component.background ?? component.color}
+          onChange={(background) => onPatch({ background })}
         />
       </ResCell>
       <ResCell>
@@ -869,21 +936,8 @@ function ComponentsTab({
 
 // ── Schraffuren (Hatches) ──────────────────────────────────────────────────
 
-// Spalten: Name | Muster | Maßstab | Winkel | Farbe | Linienstil | (löschen).
-const HATCH_COLUMNS: ResColumn[] = [
-  { titleKey: "resources.col.name" },
-  { titleKey: "resources.col.pattern" },
-  { titleKey: "resources.col.scale", align: "right" },
-  { titleKey: "resources.col.angle", align: "right" },
-  { titleKey: "resources.col.relativeToWall" },
-  { titleKey: "resources.col.color" },
-  { titleKey: "resources.col.lineStyle" },
-  { titleKey: "" },
-];
-const HATCH_TEMPLATE =
-  "minmax(110px, 1fr) minmax(120px, 0.9fr) 64px 60px 64px auto minmax(120px, 0.9fr) 36px";
-
-function HatchRow({
+/** Detail-Panel EINER Schraffur (rechte Seite des Master-Detail-Layouts). */
+function HatchDetail({
   hatch,
   lineStyles,
   onPatch,
@@ -894,71 +948,155 @@ function HatchRow({
   onPatch: (patch: Partial<HatchStyle>) => void;
   onDelete: () => void;
 }) {
-  // Sentinel-Eintrag „— ohne —", da lineStyleId optional ist.
   const NONE = "__none__";
   const lineOptions = [
     { value: NONE, label: t("resources.lineStyle.none") },
     ...lineStyles.map((l) => ({ value: l.id, label: l.name })),
   ];
+  const kind = hatch.kind ?? "vector";
+  const lines = hatch.lines ?? "parallel";
+
+  /** Wechselt den Typ; beim Umschalten auf „Bild" Default-Bildparameter setzen. */
+  const setKind = (k: "vector" | "image") => {
+    if (k === "image" && !hatch.image) {
+      onPatch({ kind: k, image: { src: "", scaleX: 1, scaleY: 1, rotation: 0 } });
+    } else {
+      onPatch({ kind: k });
+    }
+  };
+
+  /** Merge-Patch für die Bild-Parameter (behält bestehende Werte). */
+  const patchImage = (part: Partial<NonNullable<HatchStyle["image"]>>) => {
+    const cur = hatch.image ?? { src: "", scaleX: 1, scaleY: 1, rotation: 0 };
+    onPatch({ image: { ...cur, ...part } });
+  };
+
+  /** Datei → Data-URL (readAsDataURL) → image.src. */
+  const loadImage = (file: File | null) => {
+    if (!file) return;
+    const r = new FileReader();
+    r.onload = () => patchImage({ src: String(r.result ?? "") });
+    r.readAsDataURL(file);
+  };
+
   return (
-    <ResRow>
-      <ResCell>
-        <TextField
-          value={hatch.name}
-          onChange={(name) => onPatch({ name })}
-          placeholder={t("resources.hatches.placeholder")}
-        />
-      </ResCell>
-      <ResCell>
-        <SelectField
-          value={hatch.pattern}
-          onChange={(pattern) => onPatch({ pattern })}
-          options={PATTERN_OPTIONS.map((o) => ({
-            value: o.value,
-            label: t(o.labelKey),
-          }))}
-        />
-      </ResCell>
-      <ResCell align="right">
-        <NumberField
-          value={hatch.scale}
-          onChange={(scale) => onPatch({ scale })}
-          step={0.1}
-          min={0.01}
-        />
-      </ResCell>
-      <ResCell align="right">
-        <NumberField
-          value={hatch.angle}
-          onChange={(angle) => onPatch({ angle })}
-          step={5}
-        />
-      </ResCell>
-      <ResCell>
+    <div className="res-md-detail-inner">
+      <div className="res-md-head">
         <input
-          type="checkbox"
-          checked={!!hatch.relativeToWall}
-          onChange={(e) => onPatch({ relativeToWall: e.target.checked })}
-          title={t("resources.col.relativeToWall.hint")}
+          className="res-input res-md-rename"
+          value={hatch.name}
+          placeholder={t("resources.hatches.placeholder")}
+          onChange={(e) => onPatch({ name: e.target.value })}
         />
-      </ResCell>
-      <ResCell>
-        <ColorField color={hatch.color} onChange={(color) => onPatch({ color })} />
-      </ResCell>
-      <ResCell>
-        <SelectField
-          value={hatch.lineStyleId ?? NONE}
-          onChange={(v) => onPatch({ lineStyleId: v === NONE ? undefined : v })}
-          options={lineOptions}
-        />
-      </ResCell>
-      <ResCell>
         <DeleteButton
           onClick={onDelete}
           title={t("resources.delete.hatch", { name: hatch.name })}
         />
-      </ResCell>
-    </ResRow>
+      </div>
+
+      <div className="res-md-preview">
+        <HatchSwatch hatch={hatch} size={128} />
+      </div>
+
+      <div className="res-fields">
+        <FieldRow label={t("resources.field.type")}>
+          <Segmented
+            value={kind}
+            onChange={setKind}
+            options={[
+              { value: "vector", label: t("resources.hatchKind.vector") },
+              { value: "image", label: t("resources.hatchKind.image") },
+            ]}
+          />
+        </FieldRow>
+
+        {kind === "vector" ? (
+          <>
+            <FieldRow label={t("resources.field.lines")}>
+              <Segmented
+                value={lines}
+                onChange={(v) => onPatch({ lines: v })}
+                options={[
+                  { value: "parallel", label: t("resources.lines.parallel") },
+                  { value: "random", label: t("resources.lines.random") },
+                ]}
+              />
+            </FieldRow>
+            <FieldRow label={t("resources.col.pattern")}>
+              <SelectField
+                value={hatch.pattern}
+                onChange={(pattern) => onPatch({ pattern })}
+                options={PATTERN_OPTIONS.map((o) => ({
+                  value: o.value,
+                  label: t(o.labelKey),
+                }))}
+              />
+            </FieldRow>
+            <FieldRow label={t("resources.col.scale")}>
+              <NumberField
+                value={hatch.scale}
+                onChange={(scale) => onPatch({ scale })}
+                step={0.1}
+                min={0.01}
+              />
+            </FieldRow>
+            <FieldRow label={t("resources.col.angle")}>
+              <NumberField
+                value={hatch.angle}
+                onChange={(angle) => onPatch({ angle })}
+                step={5}
+              />
+            </FieldRow>
+            <FieldRow
+              label={t("resources.col.relativeToWall")}
+              hint={t("resources.col.relativeToWall.hint")}
+            >
+              <input
+                type="checkbox"
+                checked={!!hatch.relativeToWall}
+                onChange={(e) => onPatch({ relativeToWall: e.target.checked })}
+              />
+            </FieldRow>
+            <FieldRow label={t("resources.col.lineStyle")}>
+              <SelectField
+                value={hatch.lineStyleId ?? NONE}
+                onChange={(v) => onPatch({ lineStyleId: v === NONE ? undefined : v })}
+                options={lineOptions}
+              />
+            </FieldRow>
+          </>
+        ) : (
+          <>
+            <FieldRow label={t("resources.field.image")}>
+              <ImagePickButton onFile={loadImage} />
+            </FieldRow>
+            <FieldRow label={t("resources.field.scaleX")}>
+              <NumberField
+                value={hatch.image?.scaleX ?? 1}
+                onChange={(scaleX) => patchImage({ scaleX })}
+                step={0.1}
+                min={0.05}
+              />
+            </FieldRow>
+            <FieldRow label={t("resources.field.scaleY")}>
+              <NumberField
+                value={hatch.image?.scaleY ?? 1}
+                onChange={(scaleY) => patchImage({ scaleY })}
+                step={0.1}
+                min={0.05}
+              />
+            </FieldRow>
+            <FieldRow label={t("resources.field.rotation")}>
+              <NumberField
+                value={hatch.image?.rotation ?? 0}
+                onChange={(rotation) => patchImage({ rotation })}
+                step={5}
+              />
+            </FieldRow>
+          </>
+        )}
+      </div>
+    </div>
   );
 }
 
@@ -975,32 +1113,55 @@ function HatchesTab({
   onDeleteHatch: (id: string) => void;
   onImportHatches: (hatches: Omit<HatchStyle, "id">[]) => void;
 }) {
+  const [selectedId, setSelectedId] = useState<string | null>(null);
+  const hatches = project.hatches;
+  // Auswahl gegen die Liste validieren (nach Delete/Add stabil bleiben).
+  const selected = hatches.find((h) => h.id === selectedId) ?? hatches[0];
+
   return (
     <div className="res-tab">
       <div className="res-hint">{t("resources.hatches.hint")}</div>
-      <ResTable columns={HATCH_COLUMNS} template={HATCH_TEMPLATE}>
-        {project.hatches.map((h) => (
-          <HatchRow
-            key={h.id}
-            hatch={h}
-            lineStyles={project.lineStyles}
-            onPatch={(patch) => onPatchHatch(h.id, patch)}
-            onDelete={() => onDeleteHatch(h.id)}
-          />
-        ))}
-        {project.hatches.length === 0 && (
-          <EmptyState text={t("resources.hatches.empty")} />
-        )}
-      </ResTable>
-      <div className="res-add-row">
-        <button className="res-add" onClick={onAddHatch}>
-          <span className="res-add-plus">+</span> {t("resources.add")}
-        </button>
-        <FileImportButton
-          accept=".pat,text/plain"
-          label={t("resources.import.pat")}
-          onText={(text) => onImportHatches(patToHatches(text))}
-        />
+      <div className="res-md">
+        <div className="res-md-list">
+          {hatches.map((h) => (
+            <button
+              key={h.id}
+              className={`res-md-row${selected?.id === h.id ? " active" : ""}`}
+              onClick={() => setSelectedId(h.id)}
+            >
+              <span className="res-md-row-thumb">
+                <HatchSwatch hatch={h} size={30} />
+              </span>
+              <span className="res-md-row-name">{h.name}</span>
+            </button>
+          ))}
+          {hatches.length === 0 && (
+            <div className="res-md-empty">{t("resources.hatches.empty")}</div>
+          )}
+          <div className="res-md-listfoot">
+            <button className="res-add" onClick={onAddHatch}>
+              <span className="res-add-plus">+</span> {t("resources.add")}
+            </button>
+            <FileImportButton
+              accept=".pat,text/plain"
+              label={t("resources.import.pat")}
+              onText={(text) => onImportHatches(patToHatches(text))}
+            />
+          </div>
+        </div>
+        <div className="res-md-detail">
+          {selected ? (
+            <HatchDetail
+              key={selected.id}
+              hatch={selected}
+              lineStyles={project.lineStyles}
+              onPatch={(patch) => onPatchHatch(selected.id, patch)}
+              onDelete={() => onDeleteHatch(selected.id)}
+            />
+          ) : (
+            <div className="res-md-empty">{t("resources.hatches.empty")}</div>
+          )}
+        </div>
       </div>
     </div>
   );
@@ -1008,40 +1169,8 @@ function HatchesTab({
 
 // ── Linien (Line Styles) ───────────────────────────────────────────────────
 
-/** Kleine Vorschau eines Linienstils (Stärke + Strichmuster) als SVG. */
-function LinePreview({ style }: { style: LineStyle }) {
-  // Stärke (mm) optisch skaliert auf 1–6 px für die Vorschau.
-  const px = Math.max(1, Math.min(6, style.weight * 6));
-  const dasharray = style.dash ? style.dash.map((d) => d * 4).join(" ") : undefined;
-  return (
-    <svg className="res-line-preview" viewBox="0 0 120 12" preserveAspectRatio="none">
-      <line
-        x1={4}
-        y1={6}
-        x2={116}
-        y2={6}
-        stroke={style.color}
-        strokeWidth={px}
-        strokeDasharray={dasharray}
-        strokeLinecap="butt"
-      />
-    </svg>
-  );
-}
-
-// Spalten: Name | Stärke (mm) | Farbe | Strich | Vorschau | (löschen).
-const LINE_COLUMNS: ResColumn[] = [
-  { titleKey: "resources.col.name" },
-  { titleKey: "resources.col.weight", align: "right" },
-  { titleKey: "resources.col.color" },
-  { titleKey: "resources.col.stroke" },
-  { titleKey: "resources.col.preview" },
-  { titleKey: "" },
-];
-const LINE_TEMPLATE =
-  "minmax(110px, 1fr) 80px auto minmax(120px, 0.9fr) minmax(90px, 1fr) 36px";
-
-function LineStyleRow({
+/** Detail-Panel EINES Linienstils (rechte Seite des Master-Detail-Layouts). */
+function LineStyleDetail({
   style,
   onPatch,
   onDelete,
@@ -1050,48 +1179,99 @@ function LineStyleRow({
   onPatch: (patch: Partial<LineStyle>) => void;
   onDelete: () => void;
 }) {
+  const kind = style.kind ?? "dash";
+
+  /** Wechselt den Typ; beim Umschalten auf „Zickzack" Default-Parameter setzen. */
+  const setKind = (k: "dash" | "zigzag") => {
+    if (k === "zigzag" && !style.zigzag) {
+      onPatch({ kind: k, zigzag: { amplitude: 1, wavelength: 4 } });
+    } else {
+      onPatch({ kind: k });
+    }
+  };
+
+  /** Merge-Patch für die Zickzack-Parameter. */
+  const patchZig = (part: Partial<NonNullable<LineStyle["zigzag"]>>) => {
+    const cur = style.zigzag ?? { amplitude: 1, wavelength: 4 };
+    onPatch({ zigzag: { ...cur, ...part } });
+  };
+
   return (
-    <ResRow>
-      <ResCell>
-        <TextField
+    <div className="res-md-detail-inner">
+      <div className="res-md-head">
+        <input
+          className="res-input res-md-rename"
           value={style.name}
-          onChange={(name) => onPatch({ name })}
           placeholder={t("resources.lines.placeholder")}
+          onChange={(e) => onPatch({ name: e.target.value })}
         />
-      </ResCell>
-      <ResCell align="right">
-        <NumberField
-          value={style.weight}
-          onChange={(weight) => onPatch({ weight })}
-          step={0.05}
-          min={0.01}
-          max={2}
-          list="pen-weights"
-        />
-      </ResCell>
-      <ResCell>
-        <ColorField color={style.color} onChange={(color) => onPatch({ color })} />
-      </ResCell>
-      <ResCell>
-        <SelectField
-          value={dashKey(style.dash)}
-          onChange={(key) => {
-            const opt = DASH_OPTIONS.find((o) => o.key === key);
-            if (opt) onPatch({ dash: opt.dash });
-          }}
-          options={DASH_OPTIONS.map((o) => ({ value: o.key, label: t(o.labelKey) }))}
-        />
-      </ResCell>
-      <ResCell>
-        <LinePreview style={style} />
-      </ResCell>
-      <ResCell>
         <DeleteButton
           onClick={onDelete}
           title={t("resources.delete.lineStyle", { name: style.name })}
         />
-      </ResCell>
-    </ResRow>
+      </div>
+
+      <div className="res-md-preview">
+        <LineSwatch style={style} width={220} height={40} />
+      </div>
+
+      <div className="res-fields">
+        <FieldRow label={t("resources.field.type")}>
+          <Segmented
+            value={kind}
+            onChange={setKind}
+            options={[
+              { value: "dash", label: t("resources.lineKind.dash") },
+              { value: "zigzag", label: t("resources.lineKind.zigzag") },
+            ]}
+          />
+        </FieldRow>
+        <FieldRow label={t("resources.col.weight")}>
+          <NumberField
+            value={style.weight}
+            onChange={(weight) => onPatch({ weight })}
+            step={0.05}
+            min={0.01}
+            max={2}
+            list="pen-weights"
+          />
+        </FieldRow>
+        <FieldRow label={t("resources.col.color")}>
+          <ColorField color={style.color} onChange={(color) => onPatch({ color })} />
+        </FieldRow>
+        {kind === "zigzag" ? (
+          <>
+            <FieldRow label={t("resources.field.amplitude")}>
+              <NumberField
+                value={style.zigzag?.amplitude ?? 1}
+                onChange={(amplitude) => patchZig({ amplitude })}
+                step={0.1}
+                min={0.05}
+              />
+            </FieldRow>
+            <FieldRow label={t("resources.field.wavelength")}>
+              <NumberField
+                value={style.zigzag?.wavelength ?? 4}
+                onChange={(wavelength) => patchZig({ wavelength })}
+                step={0.5}
+                min={0.5}
+              />
+            </FieldRow>
+          </>
+        ) : (
+          <FieldRow label={t("resources.col.stroke")}>
+            <SelectField
+              value={dashKey(style.dash)}
+              onChange={(key) => {
+                const opt = DASH_OPTIONS.find((o) => o.key === key);
+                if (opt) onPatch({ dash: opt.dash });
+              }}
+              options={DASH_OPTIONS.map((o) => ({ value: o.key, label: t(o.labelKey) }))}
+            />
+          </FieldRow>
+        )}
+      </div>
+    </div>
   );
 }
 
@@ -1108,6 +1288,10 @@ function LinesTab({
   onDeleteLineStyle: (id: string) => void;
   onImportLineStyles: (styles: Omit<LineStyle, "id">[]) => void;
 }) {
+  const [selectedId, setSelectedId] = useState<string | null>(null);
+  const styles = project.lineStyles;
+  const selected = styles.find((l) => l.id === selectedId) ?? styles[0];
+
   return (
     <div className="res-tab">
       {/* Vorschlagswerte für die Strichstärke (Standard-Stiftbreiten in mm). */}
@@ -1117,28 +1301,46 @@ function LinesTab({
         ))}
       </datalist>
       <div className="res-hint">{t("resources.lines.hint")}</div>
-      <ResTable columns={LINE_COLUMNS} template={LINE_TEMPLATE}>
-        {project.lineStyles.map((l) => (
-          <LineStyleRow
-            key={l.id}
-            style={l}
-            onPatch={(patch) => onPatchLineStyle(l.id, patch)}
-            onDelete={() => onDeleteLineStyle(l.id)}
-          />
-        ))}
-        {project.lineStyles.length === 0 && (
-          <EmptyState text={t("resources.lines.empty")} />
-        )}
-      </ResTable>
-      <div className="res-add-row">
-        <button className="res-add" onClick={onAddLineStyle}>
-          <span className="res-add-plus">+</span> {t("resources.add")}
-        </button>
-        <FileImportButton
-          accept=".lin,text/plain"
-          label={t("resources.import.lin")}
-          onText={(text) => onImportLineStyles(linToStyles(text))}
-        />
+      <div className="res-md">
+        <div className="res-md-list">
+          {styles.map((l) => (
+            <button
+              key={l.id}
+              className={`res-md-row res-md-row-line${
+                selected?.id === l.id ? " active" : ""
+              }`}
+              onClick={() => setSelectedId(l.id)}
+            >
+              <span className="res-md-row-name">{l.name}</span>
+              <LineSwatch style={l} width={150} height={14} />
+            </button>
+          ))}
+          {styles.length === 0 && (
+            <div className="res-md-empty">{t("resources.lines.empty")}</div>
+          )}
+          <div className="res-md-listfoot">
+            <button className="res-add" onClick={onAddLineStyle}>
+              <span className="res-add-plus">+</span> {t("resources.add")}
+            </button>
+            <FileImportButton
+              accept=".lin,text/plain"
+              label={t("resources.import.lin")}
+              onText={(text) => onImportLineStyles(linToStyles(text))}
+            />
+          </div>
+        </div>
+        <div className="res-md-detail">
+          {selected ? (
+            <LineStyleDetail
+              key={selected.id}
+              style={selected}
+              onPatch={(patch) => onPatchLineStyle(selected.id, patch)}
+              onDelete={() => onDeleteLineStyle(selected.id)}
+            />
+          ) : (
+            <div className="res-md-empty">{t("resources.lines.empty")}</div>
+          )}
+        </div>
       </div>
     </div>
   );
diff --git a/src/ui/hatchPreview.tsx b/src/ui/hatchPreview.tsx
new file mode 100644
index 0000000..e6f8638
--- /dev/null
+++ b/src/ui/hatchPreview.tsx
@@ -0,0 +1,308 @@
+// Live-SVG-Vorschau (Swatch) für Schraffuren und Linienstile — eigenständig.
+//
+// Bewusst OHNE Rückgriff auf die Plan-Renderer (generatePlan/toRenderScene):
+// diese Datei zeichnet die Muster direkt aus den HatchStyle-/LineStyle-Parametern
+// als SVG nach, damit die Vorschau im Ressourcen-Manager auch dann konsistent
+// bleibt, während der Plan-Renderer separat umgebaut wird. Die Farbe kommt hier
+// bewusst NICHT vom (deprecated) HatchStyle.color, sondern über `currentColor`
+// aus dem umgebenden CSS (var(--ink)) — die echte Vordergrundfarbe stammt im Plan
+// vom Bauteil/Attribut. Bezeichner englisch, Kommentare deutsch (CONVENTIONS.md).
+
+import { useId } from "react";
+import type { HatchStyle, LineStyle } from "../model/types";
+
+// ── Kleiner deterministischer PRNG (mulberry32) ────────────────────────────
+// Für „random"-Striche: stabil pro Seed, damit die Vorschau bei gleichem
+// Maßstab/Winkel nicht bei jedem Render „springt".
+function mulberry32(seed: number): () => number {
+  let a = seed >>> 0;
+  return () => {
+    a |= 0;
+    a = (a + 0x6d2b79f5) | 0;
+    let t = Math.imul(a ^ (a >>> 15), 1 | a);
+    t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t;
+    return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
+  };
+}
+
+/**
+ * Parallele Linienschar über die Box (w×h) unter `angleDeg`, Abstand `spacing`
+ * px senkrecht zur Linienrichtung. Liefert fertige <line>-Elemente, die die Box
+ * komplett überdecken (Clip übernimmt der Aufrufer).
+ */
+function parallelLines(
+  w: number,
+  h: number,
+  angleDeg: number,
+  spacing: number,
+  strokeWidth: number,
+  keyPrefix: string,
+): React.ReactNode[] {
+  const a = (angleDeg * Math.PI) / 180;
+  const cos = Math.cos(a);
+  const sin = Math.sin(a);
+  // Senkrechte zur Linienrichtung.
+  const px = -sin;
+  const py = cos;
+  const cx = w / 2;
+  const cy = h / 2;
+  const half = Math.hypot(w, h); // Linien lang genug, um die Box zu überdecken.
+  const step = Math.max(spacing, 1.2);
+  const n = Math.ceil(half / step) + 2;
+  const out: React.ReactNode[] = [];
+  for (let k = -n; k <= n; k++) {
+    const mx = cx + k * step * px;
+    const my = cy + k * step * py;
+    out.push(
+      <line
+        key={`${keyPrefix}${k}`}
+        x1={mx - cos * half}
+        y1={my - sin * half}
+        x2={mx + cos * half}
+        y2={my + sin * half}
+        stroke="currentColor"
+        strokeWidth={strokeWidth}
+      />,
+    );
+  }
+  return out;
+}
+
+/**
+ * Live-SVG-Swatch einer Schraffur. Rendert:
+ *   • Bild-Schraffur (`kind==="image"`) als gekachelten <pattern>/<image>-Fill
+ *     mit unabhängiger Skalierung (scaleX/scaleY) und Rotation.
+ *   • Vektor-Schraffur nach `pattern`: solid/none/diagonal/crosshatch/insulation.
+ *     Untermodus `lines==="random"` verteilt kurze Striche zufällig (Kies/Splitt).
+ * `scale` verdichtet/streckt das Muster, `angle` dreht es.
+ */
+export function HatchSwatch({
+  hatch,
+  size = 34,
+}: {
+  hatch: HatchStyle;
+  size?: number;
+}) {
+  const rawId = useId().replace(/[^a-zA-Z0-9_-]/g, "");
+  const clipId = `hsc_${rawId}`;
+  const patId = `hsp_${rawId}`;
+  const w = size;
+  const h = size;
+
+  // Grundabstand der Musterlinien (px), über den Maßstab moduliert.
+  const scale = hatch.scale > 0 ? hatch.scale : 1;
+  const spacing = Math.max(3, 8 / Math.sqrt(scale));
+  const angle = hatch.angle || 0;
+
+  let inner: React.ReactNode = null;
+
+  if (hatch.kind === "image") {
+    // Bild-Kachel: Basiskachel skaliert mit scaleX/scaleY, gedreht via
+    // patternTransform. Fehlt die Quelle, zeigen wir einen dezenten Rahmen.
+    const src = hatch.image?.src;
+    const base = Math.max(6, size * 0.6);
+    const tileW = Math.max(2, base * (hatch.image?.scaleX ?? 1));
+    const tileH = Math.max(2, base * (hatch.image?.scaleY ?? 1));
+    const rot = hatch.image?.rotation ?? 0;
+    if (src) {
+      inner = (
+        <>
+          <defs>
+            <pattern
+              id={patId}
+              patternUnits="userSpaceOnUse"
+              width={tileW}
+              height={tileH}
+              patternTransform={`rotate(${rot})`}
+            >
+              <image
+                href={src}
+                x={0}
+                y={0}
+                width={tileW}
+                height={tileH}
+                preserveAspectRatio="none"
+              />
+            </pattern>
+          </defs>
+          <rect x={0} y={0} width={w} height={h} fill={`url(#${patId})`} />
+        </>
+      );
+    } else {
+      inner = (
+        <text
+          x={w / 2}
+          y={h / 2}
+          textAnchor="middle"
+          dominantBaseline="central"
+          fontSize={9}
+          fill="currentColor"
+          opacity={0.5}
+        >
+          ?
+        </text>
+      );
+    }
+  } else if (hatch.pattern === "solid") {
+    inner = <rect x={0} y={0} width={w} height={h} fill="currentColor" />;
+  } else if (hatch.pattern === "none") {
+    inner = null;
+  } else if (hatch.lines === "random") {
+    // Zufällig verteilte kurze Striche (deterministisch geseedet).
+    const rnd = mulberry32(Math.round(scale * 1000) + Math.round(angle));
+    const count = Math.round(18 * Math.min(2, scale)) + 6;
+    const len = Math.max(3, 6 / Math.sqrt(scale));
+    const out: React.ReactNode[] = [];
+    for (let i = 0; i < count; i++) {
+      const cx = rnd() * w;
+      const cy = rnd() * h;
+      const ang = rnd() * Math.PI;
+      const dx = (Math.cos(ang) * len) / 2;
+      const dy = (Math.sin(ang) * len) / 2;
+      out.push(
+        <line
+          key={i}
+          x1={cx - dx}
+          y1={cy - dy}
+          x2={cx + dx}
+          y2={cy + dy}
+          stroke="currentColor"
+          strokeWidth={0.9}
+          strokeLinecap="round"
+        />,
+      );
+    }
+    inner = out;
+  } else if (hatch.pattern === "crosshatch") {
+    inner = [
+      ...parallelLines(w, h, angle, spacing, 0.8, "a"),
+      ...parallelLines(w, h, angle + 90, spacing, 0.8, "b"),
+    ];
+  } else if (hatch.pattern === "insulation") {
+    // Dämmung: eine gewellte Schar quer über die Box (angenähert als Zickzack).
+    const rows = Math.max(2, Math.round(h / Math.max(6, spacing)));
+    const out: React.ReactNode[] = [];
+    for (let r = 0; r < rows; r++) {
+      const y = ((r + 0.5) / rows) * h;
+      const amp = Math.min(h / rows / 2, 3);
+      const waves = Math.max(2, Math.round(w / 6));
+      let d = `M 0 ${y}`;
+      for (let i = 1; i <= waves; i++) {
+        const x = (i / waves) * w;
+        const yy = y + (i % 2 === 0 ? -amp : amp);
+        d += ` L ${x.toFixed(1)} ${yy.toFixed(1)}`;
+      }
+      out.push(
+        <path key={r} d={d} fill="none" stroke="currentColor" strokeWidth={0.8} />,
+      );
+    }
+    inner = out;
+  } else {
+    // "diagonal" (Default): eine parallele Schar.
+    inner = parallelLines(w, h, angle, spacing, 0.8, "d");
+  }
+
+  return (
+    <svg
+      className="res-swatch"
+      width={w}
+      height={h}
+      viewBox={`0 0 ${w} ${h}`}
+      style={{ display: "block" }}
+    >
+      <defs>
+        <clipPath id={clipId}>
+          <rect x={0} y={0} width={w} height={h} rx={3} />
+        </clipPath>
+      </defs>
+      <rect
+        x={0.5}
+        y={0.5}
+        width={w - 1}
+        height={h - 1}
+        rx={3}
+        fill="var(--input)"
+        stroke="var(--border)"
+        strokeWidth={1}
+      />
+      <g clipPath={`url(#${clipId})`}>{inner}</g>
+    </svg>
+  );
+}
+
+/**
+ * Live-SVG-Swatch eines Linienstils. `kind==="zigzag"` zeichnet eine Zickzack-/
+ * Wellenlinie aus `amplitude`/`wavelength` (mm Papier, optisch skaliert); sonst
+ * eine gerade Linie mit `dash`-Strichmuster. `weight` (mm) wird auf eine
+ * sichtbare Pixelstärke abgebildet. Farbe über `currentColor`.
+ */
+export function LineSwatch({
+  style,
+  width = 120,
+  height = 22,
+}: {
+  style: LineStyle;
+  width?: number;
+  height?: number;
+}) {
+  const px = Math.max(1, Math.min(6, style.weight * 6));
+  const midY = height / 2;
+  const x0 = 4;
+  const x1 = width - 4;
+
+  let path: React.ReactNode;
+  if (style.kind === "zigzag") {
+    const amp = Math.max(1, Math.min(height / 2 - 2, (style.zigzag?.amplitude ?? 1) * 4));
+    const wl = Math.max(4, (style.zigzag?.wavelength ?? 4) * 4);
+    let d = `M ${x0} ${midY}`;
+    // Halbperioden-Segmente: abwechselnd nach oben/unten.
+    let x = x0;
+    let up = true;
+    let seg = 0;
+    while (x < x1) {
+      const nx = Math.min(x + wl / 2, x1);
+      const ny = midY + (up ? -amp : amp);
+      d += ` L ${nx.toFixed(1)} ${ny.toFixed(1)}`;
+      x = nx;
+      up = !up;
+      seg++;
+      if (seg > 200) break;
+    }
+    path = (
+      <path
+        d={d}
+        fill="none"
+        stroke="currentColor"
+        strokeWidth={px}
+        strokeLinejoin="round"
+        strokeLinecap="round"
+      />
+    );
+  } else {
+    const dasharray = style.dash ? style.dash.map((d) => d * 4).join(" ") : undefined;
+    path = (
+      <line
+        x1={x0}
+        y1={midY}
+        x2={x1}
+        y2={midY}
+        stroke="currentColor"
+        strokeWidth={px}
+        strokeDasharray={dasharray}
+        strokeLinecap="butt"
+      />
+    );
+  }
+
+  return (
+    <svg
+      className="res-line-preview"
+      width={width}
+      height={height}
+      viewBox={`0 0 ${width} ${height}`}
+      preserveAspectRatio="none"
+    >
+      {path}
+    </svg>
+  );
+}