diff --git a/spike_visualizer/css/components.css b/spike_visualizer/css/components.css
new file mode 100644
index 0000000..7b19b53
--- /dev/null
+++ b/spike_visualizer/css/components.css
@@ -0,0 +1,166 @@
+/* ============================
+   Filter Panel
+   ============================ */
+
+.filter-panel {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 1rem;
+  align-items: center;
+  background-color: #f4f4f4;
+  border-bottom: 1px solid #ccc;
+  padding: 0.75rem 1.25rem;
+}
+
+.filter-label {
+  font-weight: 600;
+  color: #333;
+  margin-right: 0.25rem;
+}
+
+.filter-control {
+  padding: 0.4rem 0.6rem;
+  border-radius: 4px;
+  border: 1px solid #bbb;
+  background-color: #fff;
+  transition: border-color 0.2s ease, background-color 0.2s ease;
+}
+
+.filter-control:hover,
+.filter-control:focus {
+  border-color: #888;
+  background-color: #f9f9f9;
+  outline: none;
+}
+
+/* ============================
+   Chart Container
+   ============================ */
+
+.chart-container {
+  position: relative;
+  flex: 1;
+  min-height: 400px;
+  background-color: #fff;
+  border: 1px solid #ddd;
+  border-radius: 6px;
+  overflow: hidden;
+  margin-top: 1rem;
+}
+
+.d3-chart {
+  width: 100%;
+  height: 100%;
+  cursor: crosshair;
+}
+
+.tooltip {
+  position: absolute;
+  pointer-events: none;
+  background-color: rgba(50, 50, 50, 0.9);
+  color: #fff;
+  padding: 0.5rem 0.75rem;
+  border-radius: 4px;
+  font-size: 0.875rem;
+  line-height: 1.2;
+  z-index: 10;
+  opacity: 0;
+  transition: opacity 0.15s ease;
+}
+
+.tooltip.visible {
+  opacity: 1;
+}
+
+/* ============================
+   Tabellen- & Summary-Stile
+   ============================ */
+
+.spike-table {
+  width: 100%;
+  border-collapse: collapse;
+  margin-top: 1rem;
+  font-size: 0.9rem;
+}
+
+.spike-table th,
+.spike-table td {
+  padding: 0.5rem 0.75rem;
+  text-align: left;
+  border-bottom: 1px solid #ddd;
+}
+
+.spike-table th {
+  background-color: #f0f0f0;
+  font-weight: 600;
+}
+
+.spike-table tr:hover {
+  background-color: #fafafa;
+}
+
+.metric-summary {
+  display: flex;
+  flex-wrap: wrap;
+  justify-content: space-between;
+  gap: 1rem;
+  margin-top: 1.5rem;
+  padding: 0.75rem 1rem;
+  background-color: #f9f9f9;
+  border: 1px solid #ddd;
+  border-radius: 4px;
+}
+
+.metric-summary .metric-item {
+  flex: 1;
+  min-width: 120px;
+}
+
+.metric-summary .metric-label {
+  font-size: 0.85rem;
+  color: #555;
+}
+
+.metric-summary .metric-value {
+  font-size: 1.1rem;
+  font-weight: 600;
+  color: #222;
+}
+
+/* ============================
+   Responsive Anpassungen
+   ============================ */
+
+@media (max-width: 768px) {
+  .filter-panel {
+    flex-direction: column;
+    align-items: stretch;
+  }
+
+  .chart-container {
+    min-height: 300px;
+  }
+
+  .metric-summary {
+    flex-direction: column;
+  }
+}
+
+/* ============================
+   Footer Copyright
+   ============================ */
+
+footer {
+  text-align: center;
+  font-size: 0.8rem;
+  color: #777;
+  margin-top: 2rem;
+  padding: 1rem 0;
+  border-top: 1px solid #ddd;
+}
+
+footer::after {
+  content: "© 2026 Donau2Space.de";
+  display: block;
+  margin-top: 0.5rem;
+}
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