/* =============================
   Reset and Variables
   ============================= */
:root {
  /* Farbpalette */
  --color-bg: #f8f9fa;
  --color-bg-alt: #ffffff;
  --color-text: #212529;
  --color-accent: #007bff;
  --color-border: #dee2e6;

  /* Typografie */
  --font-base: 'Arial', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.5;

  /* Abstände */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Breakpoints */
  --bp-sm: 640px;
  --bp-md: 1024px;
  --bp-lg: 1280px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* =============================
   App Layout
   ============================= */
.app-header {
  flex-shrink: 0;
  background-color: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md);
  text-align: center;
  font-weight: bold;
}

.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: var(--spacing-lg) var(--spacing-md);
}

.app-footer {
  flex-shrink: 0;
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-sm);
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text);
}

.app-footer::after {
  content: "© 2026 Donau2Space.de";
  display: block;
  margin-top: var(--spacing-xs);
  font-size: 0.75rem;
  color: var(--color-text);
}

/* =============================
   Responsive Anpassungen
   ============================= */
@media (min-width: var(--bp-sm)) {
  .app-main {
    padding: var(--spacing-xl);
  }
}

@media (min-width: var(--bp-md)) {
  .app-header {
    font-size: 1.25rem;
  }
}