/* ============================
   CSS Reset & Variablen
   ============================ */

:root {
  --color-primary: #1e88e5;
  --color-accent: #e53935;
  --color-success: #43a047;
  --color-warning: #fbc02d;
  --color-text: #212121;
  --color-text-light: #fafafa;
  --bg-light: #f5f5f5;
  --bg-dark: #212121;
  --font-base: 'Segoe UI', Arial, sans-serif;
  --font-size-base: 16px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --max-content-width: 1200px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
}

html {
  box-sizing: border-box;
  font-size: 100%;
  scroll-behavior: smooth;
}

*, *::before, *::after {
  box-sizing: inherit;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--bg-light);
  line-height: 1.5;
  display: flex;
  flex-direction: column;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

a:hover, a:focus {
  color: var(--color-primary);
}

/* ============================
   Body & Grundlayout
   ============================ */

.app-header {
  background-color: var(--bg-dark);
  color: var(--color-text-light);
  padding: var(--spacing-md);
  text-align: center;
}

.app-footer {
  background-color: var(--bg-dark);
  color: var(--color-text-light);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: center;
  margin-top: auto;
  font-size: 0.875rem;
}

.app-footer::after {
  content: '© 2026 Donau2Space.de';
  display: block;
  margin-top: var(--spacing-xs);
}

main {
  width: 100%;
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: var(--spacing-md);
  flex: 1;
}

@media (min-width: 640px) {
  body {
    font-size: 1.0625rem;
  }
}

@media (min-width: 1024px) {
  body {
    font-size: 1.125rem;
  }
}