feat: add contact link to settings, update lake labels and sidebar icons, and enhance KPI flow visualization

src/components/SettingsModal.tsx

@@ -114,6 +114,31 @@ const SettingsModal = ({ language, setLanguage, theme, setTheme, onClose }: Prop
           </div>
         </div>
 
+        {/* Contact */}
+        <div style={{ marginBottom: '2rem' }}>
+          <label style={{ display: 'block', marginBottom: '0.75rem', color: 'var(--text-muted)', fontSize: '0.85rem', textTransform: 'uppercase', letterSpacing: '1px' }}>
+            {dict.contact}
+          </label>
+          <a
+            href="mailto:info@hladinator.cz"
+            style={{
+              display: 'inline-flex',
+              alignItems: 'center',
+              gap: '0.5rem',
+              color: 'var(--color-cyan)',
+              fontSize: '0.95rem',
+              textDecoration: 'none',
+              fontWeight: 500,
+              opacity: 0.9,
+              transition: 'opacity 0.2s'
+            }}
+            onMouseOver={(e) => e.currentTarget.style.opacity = '1'}
+            onMouseOut={(e) => e.currentTarget.style.opacity = '0.9'}
+          >
+            ✉ info@hladinator.cz
+          </a>
+        </div>
+
         {/* Buy me a coffee */}
         <div style={{ borderTop: '1px solid var(--border-color)', paddingTop: '1.5rem', textAlign: 'center' }}>
           <a