diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 642c77d..8f0a693 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -10,6 +10,7 @@
       "dependencies": {
         "date-fns": "^4.1.0",
         "lucide-svelte": "^0.503.0",
+        "maplibre-gl": "^6.2.0",
         "mode-watcher": "^1.1.0",
         "pocketbase": "^0.26.0",
         "tippy.js": "^6.3.7"
@@ -821,6 +822,92 @@
         "svelte": "^5"
       }
     },
+    "node_modules/@mapbox/jsonlint-lines-primitives": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/@mapbox/jsonlint-lines-primitives/-/jsonlint-lines-primitives-2.0.3.tgz",
+      "integrity": "sha512-0SElaV0uMxEnxzBhhX9WTuPyUeMsAN/SS0i16tjuba4/mio63MG9khjC1a0JAiPGXAwvwm4UfHJURCN7nyudQg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 22"
+      }
+    },
+    "node_modules/@mapbox/point-geometry": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@mapbox/point-geometry/-/point-geometry-1.1.0.tgz",
+      "integrity": "sha512-YGcBz1cg4ATXDCM/71L9xveh4dynfGmcLDqufR+nQQy3fKwsAZsWd/x4621/6uJaeB9mwOHE6hPeDgXz9uViUQ==",
+      "license": "ISC"
+    },
+    "node_modules/@mapbox/tiny-sdf": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/@mapbox/tiny-sdf/-/tiny-sdf-2.2.0.tgz",
+      "integrity": "sha512-LVL4wgI9YAum5V+LNVQO6QgFBPw7/MIIY4XJPNsPDMrjEwcE+JfKk1LuIl8GnF197ejVdC9QdPaxrx5gfgdGXg==",
+      "license": "BSD-2-Clause"
+    },
+    "node_modules/@mapbox/unitbezier": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@mapbox/unitbezier/-/unitbezier-1.0.0.tgz",
+      "integrity": "sha512-fqd515fjBmANKGGsQ286E2Wvj/XvDFpGzwJxq4CI6jMQue6Oy04uCKp+JWKF00xRTmk6cEu1jPJ9p3xqH8YWqQ==",
+      "license": "BSD-2-Clause"
+    },
+    "node_modules/@mapbox/vector-tile": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/@mapbox/vector-tile/-/vector-tile-3.0.0.tgz",
+      "integrity": "sha512-Qf10S1uIHMk20ri/IVBnpS+esUEkVaR5Hftmz88jTInrpmWgPGJfPe3LVjjlE77trLx8tH6qjTG7uWH9hIq/0Q==",
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "@mapbox/point-geometry": "~1.1.0",
+        "@types/geojson": "^7946.0.16",
+        "pbf": "^5.0.0"
+      }
+    },
+    "node_modules/@maplibre/geojson-vt": {
+      "version": "6.1.1",
+      "resolved": "https://registry.npmjs.org/@maplibre/geojson-vt/-/geojson-vt-6.1.1.tgz",
+      "integrity": "sha512-FVMOcmSP/yqol45t7StApEyTL5/vmqBCuFhH9n+fFuINenhaX+YgHHIt1yJ86S8kln3uJLcMvmEU2cfn6E2eCQ==",
+      "license": "ISC",
+      "dependencies": {
+        "kdbush": "^4.1.0"
+      }
+    },
+    "node_modules/@maplibre/maplibre-gl-style-spec": {
+      "version": "26.2.1",
+      "resolved": "https://registry.npmjs.org/@maplibre/maplibre-gl-style-spec/-/maplibre-gl-style-spec-26.2.1.tgz",
+      "integrity": "sha512-QFKCXkOeSzOr8jF75jm6kySOg+dUvOehPhRi68gcOYPHb7U5JloUq0dJW0Y5/fZV8ygfT0Vp2RWodvq+fyxFWA==",
+      "license": "ISC",
+      "dependencies": {
+        "@mapbox/jsonlint-lines-primitives": "^2.0.3",
+        "@mapbox/unitbezier": "^1.0.0",
+        "json-stringify-pretty-compact": "^4.0.0",
+        "minimist": "^1.2.8",
+        "quickselect": "^3.0.0",
+        "tinyqueue": "^3.0.0"
+      },
+      "bin": {
+        "gl-style-format": "dist/gl-style-format.mjs",
+        "gl-style-migrate": "dist/gl-style-migrate.mjs",
+        "gl-style-validate": "dist/gl-style-validate.mjs"
+      }
+    },
+    "node_modules/@maplibre/mlt": {
+      "version": "1.1.12",
+      "resolved": "https://registry.npmjs.org/@maplibre/mlt/-/mlt-1.1.12.tgz",
+      "integrity": "sha512-ZeK5w2TTeHOajcLaEQs1KZXw2V9wIKo1PmThlxlsHoXsQsYlBqLJzPOd6tJHRtGTChUY3DPPmjXRArYVvAbmZw==",
+      "license": "(MIT OR Apache-2.0)",
+      "dependencies": {
+        "@mapbox/point-geometry": "^1.1.0"
+      }
+    },
+    "node_modules/@maplibre/vt-pbf": {
+      "version": "4.3.2",
+      "resolved": "https://registry.npmjs.org/@maplibre/vt-pbf/-/vt-pbf-4.3.2.tgz",
+      "integrity": "sha512-j6p0AdjvAR19Z3XaCysle7A4ZSo08tYOzxD0Y9NQylwPAkwJJeYub5b2eVucdeDh7erhv69DahoLOevDRERRUw==",
+      "license": "MIT",
+      "dependencies": {
+        "@mapbox/point-geometry": "^1.1.0",
+        "@types/geojson": "^7946.0.16",
+        "pbf": "^5.1.0"
+      }
+    },
     "node_modules/@napi-rs/lzma-linux-x64-gnu": {
       "version": "1.5.1",
       "resolved": "https://registry.npmjs.org/@napi-rs/lzma-linux-x64-gnu/-/lzma-linux-x64-gnu-1.5.1.tgz",
@@ -1869,6 +1956,12 @@
       "integrity": "sha512-GhdPgy1el4/ImP05X05Uw4cw2/M93BCUmnEvWZNStlCzEKME4Fkk+YpoA5OiHNQmoS7Cafb8Xa3Pya8m1Qrzeg==",
       "license": "MIT"
     },
+    "node_modules/@types/geojson": {
+      "version": "7946.0.16",
+      "resolved": "https://registry.npmjs.org/@types/geojson/-/geojson-7946.0.16.tgz",
+      "integrity": "sha512-6C8nqWur3j98U6+lXDfTUWIfgvZU+EumvpHKcYjujKH7woYyLj2sUmff0tRhrqM7BohUw7Pz3ZB1jj2gW9Fvmg==",
+      "license": "MIT"
+    },
     "node_modules/@types/resolve": {
       "version": "1.20.2",
       "resolved": "https://registry.npmjs.org/@types/resolve/-/resolve-1.20.2.tgz",
@@ -2755,6 +2848,12 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/earcut": {
+      "version": "3.2.3",
+      "resolved": "https://registry.npmjs.org/earcut/-/earcut-3.2.3.tgz",
+      "integrity": "sha512-vnS4AVwp1KHAF13i1vp1/2D5evWy3k5u/iW/B81QVsUZtV8cv2tU0b2VNFlqvh4kYwrFMDdjPCfAmfyJW9y14Q==",
+      "license": "ISC"
+    },
     "node_modules/emoji-regex": {
       "version": "8.0.0",
       "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
@@ -3153,6 +3252,12 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/gl-matrix": {
+      "version": "3.4.4",
+      "resolved": "https://registry.npmjs.org/gl-matrix/-/gl-matrix-3.4.4.tgz",
+      "integrity": "sha512-latSnyDNt/8zYUB6VIJ6PCh2jBjJX6gnDsoCZ7LyW7GkqrD51EWwa9qCoGixj8YqBtETQK/xY7OmpTF8xz1DdQ==",
+      "license": "MIT"
+    },
     "node_modules/glob": {
       "version": "7.2.3",
       "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.3.tgz",
@@ -3583,6 +3688,18 @@
         "node": "^22.14.0 || >=24.0.0"
       }
     },
+    "node_modules/json-stringify-pretty-compact": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/json-stringify-pretty-compact/-/json-stringify-pretty-compact-4.0.0.tgz",
+      "integrity": "sha512-3CNZ2DnrpByG9Nqj6Xo8vqbjT4F6N+tb4Gb28ESAZjYZ5yqvmc56J+/kuIwkaAMOyblTQhUW7PxMkUb8Q36N3Q==",
+      "license": "MIT"
+    },
+    "node_modules/kdbush": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/kdbush/-/kdbush-4.1.0.tgz",
+      "integrity": "sha512-e9vurzrXJQrFX6ckpHP3bvj5l+9CnYzkxDNnNQ1h2QTqdWsUAJgXiKdGNcOa1EY85dU8KbQ+z/FdQdB7P+9yfQ==",
+      "license": "ISC"
+    },
     "node_modules/kleur": {
       "version": "4.1.5",
       "resolved": "https://registry.npmjs.org/kleur/-/kleur-4.1.5.tgz",
@@ -3939,6 +4056,38 @@
       "license": "ISC",
       "optional": true
     },
+    "node_modules/maplibre-gl": {
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/maplibre-gl/-/maplibre-gl-6.2.0.tgz",
+      "integrity": "sha512-PaNYtxWmYgIdDHshXsnU3Pho+H9IPme9H6dTjZbFWNazi+Q5QgKgIlu2GiSGVtOZ77/Fz3n5/1/kGM6ETzu0Lg==",
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "@mapbox/point-geometry": "^1.1.0",
+        "@mapbox/tiny-sdf": "^2.2.0",
+        "@mapbox/unitbezier": "^1.0.0",
+        "@mapbox/vector-tile": "^3.0.0",
+        "@maplibre/geojson-vt": "^6.1.1",
+        "@maplibre/maplibre-gl-style-spec": "^26.2.1",
+        "@maplibre/mlt": "^1.1.12",
+        "@maplibre/vt-pbf": "^4.3.2",
+        "@types/geojson": "^7946.0.16",
+        "earcut": "^3.2.3",
+        "gl-matrix": "^3.4.4",
+        "kdbush": "^4.1.0",
+        "murmurhash-js": "^1.0.0",
+        "pbf": "^5.1.2",
+        "potpack": "^2.1.0",
+        "quickselect": "^3.0.0",
+        "tinyqueue": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=16.14.0",
+        "npm": ">=8.1.0"
+      },
+      "funding": {
+        "url": "https://github.com/maplibre/maplibre-gl-js?sponsor=1"
+      }
+    },
     "node_modules/math-intrinsics": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/math-intrinsics/-/math-intrinsics-1.1.0.tgz",
@@ -4020,7 +4169,6 @@
       "version": "1.2.8",
       "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.8.tgz",
       "integrity": "sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA==",
-      "dev": true,
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/ljharb"
@@ -4359,6 +4507,12 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/murmurhash-js": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/murmurhash-js/-/murmurhash-js-1.0.0.tgz",
+      "integrity": "sha512-TvmkNhkv8yct0SVBSy+o8wYzXjE4Zz3PCesbfs8HiCXXdcTuocApFv11UWlNFWKYsP2okqrhb7JNlSm9InBhIw==",
+      "license": "MIT"
+    },
     "node_modules/nanoid": {
       "version": "3.3.11",
       "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.11.tgz",
@@ -4656,6 +4810,18 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/pbf": {
+      "version": "5.1.2",
+      "resolved": "https://registry.npmjs.org/pbf/-/pbf-5.1.2.tgz",
+      "integrity": "sha512-mnvGdvOrIvJOBGUEdGkrVXjN8E/VkIJCkf2eS1DH2yv82ORUlLttmDt0rWY38yYZmVwciZwBUvHM20qxBZf40w==",
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "resolve-protobuf-schema": "^2.1.0"
+      },
+      "bin": {
+        "pbf": "bin/pbf"
+      }
+    },
     "node_modules/picocolors": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
@@ -4743,6 +4909,12 @@
         "node": ">=4"
       }
     },
+    "node_modules/potpack": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/potpack/-/potpack-2.1.0.tgz",
+      "integrity": "sha512-pcaShQc1Shq0y+E7GqJqvZj8DTthWV1KeHGdi0Z6IAin2Oi3JnLCOfwnCo84qc+HAp52wT9nK9H7FAJp5a44GQ==",
+      "license": "ISC"
+    },
     "node_modules/prebuild-install": {
       "version": "7.1.3",
       "resolved": "https://registry.npmjs.org/prebuild-install/-/prebuild-install-7.1.3.tgz",
@@ -4794,6 +4966,12 @@
         "node": ">=10"
       }
     },
+    "node_modules/protocol-buffers-schema": {
+      "version": "3.6.1",
+      "resolved": "https://registry.npmjs.org/protocol-buffers-schema/-/protocol-buffers-schema-3.6.1.tgz",
+      "integrity": "sha512-VG2K63Igkiv9p76tk1lilczEK1cT+kCjKtkdhw1dQZV3k3IXJbd3o6Ho8b9zJZaHSnT2hKe4I+ObmX9w6m5SmQ==",
+      "license": "MIT"
+    },
     "node_modules/pump": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/pump/-/pump-3.0.4.tgz",
@@ -4815,6 +4993,12 @@
         "node": ">=6"
       }
     },
+    "node_modules/quickselect": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/quickselect/-/quickselect-3.0.0.tgz",
+      "integrity": "sha512-XdjUArbK4Bm5fLLvlm5KpTFOiOThgfWWI4axAZDWg4E/0mKdZyI9tNEfds27qCi1ze/vwTR16kvmmGhRra3c2g==",
+      "license": "ISC"
+    },
     "node_modules/rc": {
       "version": "1.2.8",
       "resolved": "https://registry.npmjs.org/rc/-/rc-1.2.8.tgz",
@@ -4892,6 +5076,15 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/resolve-protobuf-schema": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/resolve-protobuf-schema/-/resolve-protobuf-schema-2.1.0.tgz",
+      "integrity": "sha512-kI5ffTiZWmJaS/huM8wZfEMer1eRd7oJQhDuxeCLe3t7N7mX3z94CN0xPxBQxFYQTSNz9T0i+v6inKqSdK8xrQ==",
+      "license": "MIT",
+      "dependencies": {
+        "protocol-buffers-schema": "^3.3.1"
+      }
+    },
     "node_modules/retry": {
       "version": "0.12.0",
       "resolved": "https://registry.npmjs.org/retry/-/retry-0.12.0.tgz",
@@ -5657,6 +5850,12 @@
         "url": "https://github.com/sponsors/SuperchupuDev"
       }
     },
+    "node_modules/tinyqueue": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/tinyqueue/-/tinyqueue-3.0.0.tgz",
+      "integrity": "sha512-gRa9gwYU3ECmQYv3lslts5hxuIa90veaEcxDYuu3QGOIAEM2mOZkVHp48ANJuu1CURtRdHKUBY5Lm1tHV+sD4g==",
+      "license": "ISC"
+    },
     "node_modules/tinyrainbow": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/tinyrainbow/-/tinyrainbow-3.1.1.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index 17bb93b..87b66b4 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -43,6 +43,7 @@
   "dependencies": {
     "date-fns": "^4.1.0",
     "lucide-svelte": "^0.503.0",
+    "maplibre-gl": "^6.2.0",
     "mode-watcher": "^1.1.0",
     "pocketbase": "^0.26.0",
     "tippy.js": "^6.3.7"
diff --git a/frontend/src/lib/components/ElevationProfile.svelte b/frontend/src/lib/components/ElevationProfile.svelte
new file mode 100644
index 0000000..b8ff0ba
--- /dev/null
+++ b/frontend/src/lib/components/ElevationProfile.svelte
@@ -0,0 +1,92 @@
+<script lang="ts">
+    /**
+     * Höhenprofil als SVG-Fläche. Beim Überfahren meldet die Komponente den
+     * Index des Punktes; die Elternkomponente reicht ihn an die Karte weiter,
+     * damit dort dieselbe Stelle hervorgehoben wird.
+     */
+    let {
+        elevation,
+        onhover,
+        height = '120px',
+    }: {
+        elevation: { d: number; ele: number }[]
+        onhover?: (index: number | null) => void
+        height?: string
+    } = $props()
+
+    // Internes Koordinatensystem; das SVG skaliert über viewBox mit.
+    const W = 1000
+    const H = 200
+
+    const stats = $derived.by(() => {
+        if (elevation.length < 2) return null
+
+        const eles = elevation.map((p) => p.ele)
+        const min = Math.min(...eles)
+        const max = Math.max(...eles)
+        const totalD = elevation[elevation.length - 1].d || 1
+        // Bei flachen Strecken wäre die Spanne 0 und die Division ungültig.
+        const span = max - min || 1
+
+        return { min, max, totalD, span }
+    })
+
+    const path = $derived.by(() => {
+        if (!stats) return ''
+        const { min, totalD, span } = stats
+
+        const pts = elevation.map((p) => {
+            const x = (p.d / totalD) * W
+            const y = H - ((p.ele - min) / span) * H
+            return `${x.toFixed(1)},${y.toFixed(1)}`
+        })
+
+        // Fläche schließen: runter zur Grundlinie und zurück zum Anfang
+        return `M ${pts.join(' L ')} L ${W},${H} L 0,${H} Z`
+    })
+
+    let hoverX = $state<number | null>(null)
+
+    function handleMove(e: MouseEvent) {
+        if (!elevation.length) return
+
+        const rect = (e.currentTarget as SVGElement).getBoundingClientRect()
+        const ratio = (e.clientX - rect.left) / rect.width
+        const idx = Math.round(ratio * (elevation.length - 1))
+        const clamped = Math.max(0, Math.min(elevation.length - 1, idx))
+
+        hoverX = ratio * W
+        onhover?.(clamped)
+    }
+
+    function handleLeave() {
+        hoverX = null
+        onhover?.(null)
+    }
+</script>
+
+{#if stats}
+    <div class="w-full" style:height>
+        <svg
+            viewBox="0 0 {W} {H}"
+            preserveAspectRatio="none"
+            class="w-full h-full"
+            role="img"
+            aria-label="Höhenprofil"
+            onmousemove={handleMove}
+            onmouseleave={handleLeave}
+        >
+            <path d={path} fill="rgb(14 165 233 / 0.2)" stroke="rgb(14 165 233)" stroke-width="2" vector-effect="non-scaling-stroke" />
+            {#if hoverX !== null}
+                <line x1={hoverX} y1="0" x2={hoverX} y2={H} stroke="rgb(14 165 233)" stroke-width="1" vector-effect="non-scaling-stroke" />
+            {/if}
+        </svg>
+    </div>
+    <div class="flex justify-between text-xs text-muted-foreground mt-1">
+        <span>{Math.round(stats.min)} m</span>
+        <span>{(stats.totalD / 1000).toFixed(1)} km</span>
+        <span>{Math.round(stats.max)} m</span>
+    </div>
+{:else}
+    <p class="text-sm text-muted-foreground">Keine Höhendaten vorhanden.</p>
+{/if}
diff --git a/frontend/src/lib/components/TrailMap.svelte b/frontend/src/lib/components/TrailMap.svelte
new file mode 100644
index 0000000..215d297
--- /dev/null
+++ b/frontend/src/lib/components/TrailMap.svelte
@@ -0,0 +1,207 @@
+<script lang="ts">
+    /**
+     * Karte für einen Trail. Bewusst ohne Store-Zugriff: Alles kommt über
+     * Props, Ereignisse gehen über Callback-Props zurück. Damit ist die
+     * Komponente in Liste, Detailseite und Setzmodus gleichermaßen nutzbar.
+     */
+    import { onMount } from 'svelte'
+    import * as maplibregl from 'maplibre-gl'
+    import type { Map as MapLibreMap, Marker } from 'maplibre-gl'
+    import 'maplibre-gl/dist/maplibre-gl.css'
+
+    type LineGeoJSON = { type: 'LineString'; coordinates: [number, number][] }
+    type MarkerData = {
+        id: string
+        lat: number
+        lng: number
+        color: string
+        resolved: boolean
+        label: string
+    }
+
+    let {
+        geojson = null,
+        bounds = null,
+        markers = [],
+        status = 'offen',
+        placing = false,
+        highlightIndex = null,
+        onplace,
+        onmarkerclick,
+        height = '420px',
+    }: {
+        geojson?: LineGeoJSON | null
+        bounds?: [[number, number], [number, number]] | null
+        markers?: MarkerData[]
+        status?: 'offen' | 'eingeschraenkt' | 'gesperrt'
+        placing?: boolean
+        highlightIndex?: number | null
+        onplace?: (coords: { lat: number; lng: number }) => void
+        onmarkerclick?: (id: string) => void
+        height?: string
+    } = $props()
+
+    // Kachelquelle als Konstante, damit sie sich später leicht gegen eine
+    // Outdoor-Karte mit Höhenlinien tauschen lässt.
+    const TILES = 'https://tile.openstreetmap.org/{z}/{x}/{y}.png'
+    const ATTRIBUTION = '&copy; OpenStreetMap-Mitwirkende'
+
+    // Fallback, wenn ein Trail noch keine Version hat: Hersbruck.
+    const FALLBACK_CENTER: [number, number] = [11.4318, 49.5089]
+
+    const LINE_COLORS = {
+        offen: '#16a34a',
+        eingeschraenkt: '#ca8a04',
+        gesperrt: '#dc2626',
+    } as const
+
+    let container: HTMLDivElement
+    let map = $state<MapLibreMap | null>(null)
+    let ready = $state(false)
+    let markerObjects: Marker[] = []
+    let highlightMarker: Marker | null = null
+
+    onMount(() => {
+        const instance = new maplibregl.Map({
+            container,
+            style: {
+                version: 8,
+                sources: {
+                    osm: {
+                        type: 'raster',
+                        tiles: [TILES],
+                        tileSize: 256,
+                        attribution: ATTRIBUTION,
+                    },
+                },
+                layers: [{ id: 'osm', type: 'raster', source: 'osm' }],
+            },
+            center: FALLBACK_CENTER,
+            zoom: 11,
+        })
+        map = instance
+
+        instance.addControl(new maplibregl.NavigationControl(), 'top-right')
+        instance.addControl(new maplibregl.ScaleControl(), 'bottom-left')
+
+        instance.on('load', () => {
+            ready = true
+        })
+
+        instance.on('click', (e) => {
+            if (placing) onplace?.({ lat: e.lngLat.lat, lng: e.lngLat.lng })
+        })
+
+        return () => {
+            instance.remove()
+            map = null
+        }
+    })
+
+    // Trail-Linie zeichnen bzw. aktualisieren
+    $effect(() => {
+        if (!map || !ready) return
+
+        const data = geojson
+        const color = LINE_COLORS[status] ?? LINE_COLORS.offen
+        const src = map.getSource('trail') as maplibregl.GeoJSONSource | undefined
+
+        if (!data) {
+            if (src) {
+                src.setData({ type: 'FeatureCollection', features: [] })
+            }
+            return
+        }
+
+        const feature = { type: 'Feature' as const, properties: {}, geometry: data }
+
+        if (src) {
+            src.setData(feature)
+            map.setPaintProperty('trail-line', 'line-color', color)
+        } else {
+            map.addSource('trail', { type: 'geojson', data: feature })
+            map.addLayer({
+                id: 'trail-line',
+                type: 'line',
+                source: 'trail',
+                layout: { 'line-join': 'round', 'line-cap': 'round' },
+                paint: { 'line-color': color, 'line-width': 4 },
+            })
+        }
+    })
+
+    // Kartenausschnitt auf den Track setzen
+    $effect(() => {
+        if (!map || !ready || !bounds) return
+        map.fitBounds(bounds, { padding: 40, duration: 400, maxZoom: 16 })
+    })
+
+    // Marker neu aufbauen — bei überschaubaren Mengen einfacher und
+    // zuverlässiger als einzelne Aktualisierungen.
+    $effect(() => {
+        if (!map || !ready) return
+
+        for (const m of markerObjects) m.remove()
+        markerObjects = []
+
+        for (const data of markers) {
+            const el = document.createElement('button')
+            el.type = 'button'
+            el.title = data.label
+            el.setAttribute('aria-label', data.label)
+            el.style.cssText = `
+                width: 18px; height: 18px; border-radius: 9999px;
+                border: 2px solid white; cursor: pointer; padding: 0;
+                background: ${data.color};
+                opacity: ${data.resolved ? '0.35' : '1'};
+                box-shadow: 0 1px 4px rgba(0,0,0,.4);
+            `
+            el.addEventListener('click', (ev) => {
+                ev.stopPropagation()
+                onmarkerclick?.(data.id)
+            })
+
+            markerObjects.push(
+                new maplibregl.Marker({ element: el })
+                    .setLngLat([data.lng, data.lat])
+                    .addTo(map),
+            )
+        }
+    })
+
+    // Stelle aus dem Höhenprofil hervorheben
+    $effect(() => {
+        if (!map || !ready) return
+
+        highlightMarker?.remove()
+        highlightMarker = null
+
+        const coords = geojson?.coordinates
+        if (highlightIndex == null || !coords?.length) return
+
+        const idx = Math.max(0, Math.min(coords.length - 1, highlightIndex))
+        const el = document.createElement('div')
+        el.style.cssText = `
+            width: 12px; height: 12px; border-radius: 9999px;
+            background: #0ea5e9; border: 2px solid white;
+            box-shadow: 0 1px 4px rgba(0,0,0,.4);
+        `
+
+        highlightMarker = new maplibregl.Marker({ element: el })
+            .setLngLat(coords[idx])
+            .addTo(map)
+    })
+</script>
+
+<div
+    bind:this={container}
+    style:height
+    class="w-full rounded-lg overflow-hidden border"
+    class:cursor-crosshair={placing}
+></div>
+
+{#if placing}
+    <p class="text-sm text-muted-foreground mt-2">
+        Klicke auf die Karte, um die Stelle zu markieren.
+    </p>
+{/if}