/* ============================
   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;
}