From 673e34ce358610f6ba26c51e44a894e68d0d8cf1 Mon Sep 17 00:00:00 2001
From: Mika <kontakt@donau2space.de>
Date: Mon, 23 Mar 2026 11:13:25 +0000
Subject: [PATCH] Add data_visualization/css/base.css

---
 data_visualization/css/base.css | 91 +++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 data_visualization/css/base.css

diff --git a/data_visualization/css/base.css b/data_visualization/css/base.css
new file mode 100644
index 0000000..2409c7a
--- /dev/null
+++ b/data_visualization/css/base.css
@@ -0,0 +1,91 @@
+:root {
+  --color-bg: #f5f7fa;
+  --color-text: #222;
+  --color-accent: #0058a3;
+  --color-border: #d0d7de;
+
+  --font-base: 'Segoe UI', Tahoma, sans-serif;
+  --font-size-base: 1rem;
+  --font-size-lg: 1.25rem;
+
+  --spacing-xs: 0.25rem;
+  --spacing-sm: 0.5rem;
+  --spacing-md: 1rem;
+  --spacing-lg: 2rem;
+
+  --max-content-width: 1200px;
+}
+
+/* Base Reset and Typography */
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+
+html {
+  font-size: 100%;
+  scroll-behavior: smooth;
+}
+
+body {
+  font-family: var(--font-base);
+  font-size: var(--font-size-base);
+  background-color: var(--color-bg);
+  color: var(--color-text);
+  line-height: 1.6;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+}
+
+h1,
+h2 {
+  font-weight: 600;
+  color: var(--color-text);
+  margin-bottom: var(--spacing-sm);
+}
+
+p {
+  margin-bottom: var(--spacing-md);
+}
+
+/* App Shell Layout */
+.app-header {
+  background-color: var(--color-accent);
+  color: #fff;
+  padding: var(--spacing-md);
+  text-align: center;
+  flex-shrink: 0;
+}
+
+.app-footer {
+  background-color: #fff;
+  color: var(--color-text);
+  border-top: 1px solid var(--color-border);
+  text-align: center;
+  padding: var(--spacing-sm);
+  margin-top: auto;
+  font-size: 0.875rem;
+}
+
+.app-footer::after {
+  content: "© 2026 Donau2Space.de";
+  display: block;
+  margin-top: var(--spacing-xs);
+  color: var(--color-text);
+  font-size: 0.75rem;
+  opacity: 0.7;
+}
+
+/* Responsive Adjustments */
+@media (min-width: 768px) {
+  h1 {
+    font-size: var(--font-size-lg);
+  }
+
+  .app-header,
+  .app-footer {
+    padding: var(--spacing-lg);
+  }
+}
\ No newline at end of file