:root {
  /* Farbvariablen für dunkles Design */
  --color-bg-dark: #0f0f10;
  --color-surface-dark: #1a1a1c;
  --color-text-dark: #e0e0e0;
  --color-accent-dark: #3fa7ff;
  --color-muted-dark: #444;

  /* Typografievariablen */
  --font-base: 'Segoe UI', Roboto, sans-serif;
  --font-size-base: 1rem;
  --line-height-base: 1.5;
}

/* ======================================== */
/* Dark Theme Styles */
/* ======================================== */
body.dark-mode {
  background-color: var(--color-bg-dark);
  color: var(--color-text-dark);
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
}

.chart-container.dark {
  background-color: var(--color-surface-dark);
  border: 1px solid var(--color-muted-dark);
  color: var(--color-text-dark);
}

.event-log.dark {
  background-color: var(--color-surface-dark);
  border-left: 3px solid var(--color-accent-dark);
  color: var(--color-text-dark);
}

.chart-container.dark .axis line,
.chart-container.dark .axis path {
  stroke: var(--color-muted-dark);
}

.chart-container.dark .data-line {
  stroke: var(--color-accent-dark);
}

/* Hover- und Fokuseffekte im dunklen Modus */
a, button, input[type='range'] {
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

body.dark-mode a:hover,
body.dark-mode button:hover {
  color: var(--color-accent-dark);
}

/* Tabellen oder Textlogs */
.event-log.dark table {
  width: 100%;
  border-collapse: collapse;
}

.event-log.dark th,
.event-log.dark td {
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--color-muted-dark);
}

/* Scrollbar Styling */
body.dark-mode::-webkit-scrollbar {
  width: 8px;
}

body.dark-mode::-webkit-scrollbar-track {
  background: var(--color-bg-dark);
}

body.dark-mode::-webkit-scrollbar-thumb {
  background-color: var(--color-muted-dark);
  border-radius: 4px;
}

/* Responsives Verhalten */
@media (min-width: 640px) {
  .chart-container.dark {
    padding: 1rem;
  }
  .event-log.dark {
    padding: 1rem;
  }
}

/* Footer */
footer.dark-mode {
  color: var(--color-muted-dark);
  text-align: center;
  font-size: 0.875rem;
  padding: 1rem 0;
  border-top: 1px solid var(--color-muted-dark);
}

footer.dark-mode::after {
  content: "© 2026 Donau2Space.de";
  display: block;
  margin-top: 0.5rem;
  color: var(--color-text-dark);
}