Add data_visualization/css/base.css

data_visualization/css/base.css

@@ -0,0 +1,112 @@
+:root {
+  /* Farbdefinitionen */
+  --color-bg: #f8f9fa;
+  --color-text: #222;
+  --color-accent: #357edd;
+  --color-border: #ddd;
+
+  /* Typografie und Layoutvariablen */
+  --font-base: 'Helvetica Neue', Arial, sans-serif;
+  --font-size-base: 16px;
+  --spacing-xs: 0.25rem;
+  --spacing-sm: 0.5rem;
+  --spacing-md: 1rem;
+  --spacing-lg: 2rem;
+
+  /* Breakpoints */
+  --bp-sm: 640px;
+  --bp-md: 1024px;
+  --bp-lg: 1440px;
+}
+
+/* Reset & Grundtypografie */
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+
+html {
+  font-size: 100%;
+  scroll-behavior: smooth;
+}
+
+body {
+  background-color: var(--color-bg);
+  color: var(--color-text);
+  font-family: var(--font-base);
+  font-size: var(--font-size-base);
+  line-height: 1.6;
+  -webkit-font-smoothing: antialiased;
+  display: grid;
+  grid-template-rows: auto 1fr auto;
+  min-height: 100vh;
+}
+
+/* Layoutstruktur */
+.app-header,
+.app-main,
+.app-sidebar,
+.app-footer {
+  padding: var(--spacing-md);
+}
+
+.app-header {
+  background-color: var(--color-accent);
+  color: #fff;
+  font-weight: 500;
+}
+
+.app-main {
+  display: grid;
+  gap: var(--spacing-md);
+}
+
+.app-sidebar {
+  background-color: #fff;
+  border-right: 1px solid var(--color-border);
+}
+
+.app-footer {
+  background-color: #eee;
+  text-align: center;
+  font-size: 0.875rem;
+  padding: var(--spacing-sm);
+}
+
+/* Responsives Grid */
+@media (min-width: var(--bp-md)) {
+  body {
+    grid-template-columns: 16rem 1fr;
+    grid-template-areas:
+      'header header'
+      'sidebar main'
+      'footer footer';
+  }
+
+  .app-header {
+    grid-area: header;
+  }
+
+  .app-sidebar {
+    grid-area: sidebar;
+  }
+
+  .app-main {
+    grid-area: main;
+  }
+
+  .app-footer {
+    grid-area: footer;
+  }
+}
+
+/* Footer-Kennzeichnung */
+.app-footer::after {
+  content: '© 2026 Donau2Space.de';
+  display: block;
+  margin-top: var(--spacing-sm);
+  color: var(--color-text);
+  opacity: 0.7;
+  font-size: 0.75rem;
+}