General usability improvements

* Reevaluate all featuers stroke widths for shadow, casing, stroke
* Shadow width is important to make sure all features are easily clickable
* Casing width is important to see oneway arrows
* Make sure all line styles have normal and low-zoom variants
* Show directional arrows for all waterway types

css/40_railways.css

@@ -8,48 +8,77 @@
     color: #555;
     fill: #eee;
 }
+
+/* narrow widths */
+
+path.shadow.tag-railway {
+    stroke-width: 16;
+}
+path.casing.tag-railway {
+    stroke-width: 7;
+}
 path.stroke.tag-railway {
-    stroke: #eee;
     stroke-width: 2;
     stroke-linecap: butt;
     stroke-dasharray: 12,12;
 }
+
+.low-zoom path.shadow.tag-railway {
+    stroke-width: 12;
+}
+.low-zoom path.casing.tag-railway {
+    stroke-width: 5;
+}
+.low-zoom path.stroke.tag-railway {
+    stroke-width: 2;
+    stroke-dasharray: 6,6;
+}
+
+
+/* styles */
+
 path.casing.tag-railway {
     stroke: #555;
-    stroke-width: 4;
 }
+path.stroke.tag-railway {
+    stroke: #eee;
+}
+
 
 .preset-icon .icon.tag-railway-disused,
 .preset-icon .icon.tag-railway-abandoned {
     color: #999;
     fill: #eee;
 }
-path.stroke.tag-railway-abandoned {
-    stroke: #eee;
-}
 path.casing.tag-railway-abandoned {
     stroke: #999;
 }
+path.stroke.tag-railway-abandoned {
+    stroke: #eee;
+}
+
 
 .preset-icon .icon.tag-railway-subway {
     color: #222;
     fill: #bbb;
 }
-path.stroke.tag-railway-subway {
-    stroke: #bbb;
-}
 path.casing.tag-railway-subway {
     stroke: #222;
 }
+path.stroke.tag-railway-subway {
+    stroke: #bbb;
+}
 
+
+path.casing.tag-railway-platform {
+    stroke: none;
+}
 path.stroke.tag-railway-platform {
     stroke: #999;
     stroke-width: 4;
     stroke-dasharray: none;
 }
-path.casing.tag-railway-platform {
-    stroke: none;
-}
+
 
 .area.stroke.tag-railway {
     stroke: white;