/* =========================================
   CSS Reset & Root Variables
   ========================================= */

:root {
  --color-bg: #f9fafb;
  --color-text: #222222;
  --color-accent: #0066cc;
  --color-muted: #6b7280;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --font-base: 'Arial', sans-serif;
  --font-size-base: 16px;
  --max-width: 1200px;
  --breakpoint-sm: 640px;
  --breakpoint-md: 1024px;
}

/* CSS Reset */

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

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

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

/* =========================================
   App Shell Layout
   ========================================= */

.app-header {
  background-color: #ffffff;
  border-bottom: 1px solid #e5e7eb;
  padding: var(--spacing-md);
  text-align: center;
  font-weight: bold;
}

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

.app-footer {
  background-color: #ffffff;
  border-top: 1px solid #e5e7eb;
  text-align: center;
  padding: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--color-muted);
}

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

/* =========================================
   Responsive Adjustments
   ========================================= */

@media (min-width: var(--breakpoint-sm)) {
  .app-header {
    text-align: left;
    padding: var(--spacing-lg);
  }

  .app-main {
    padding: var(--spacing-lg);
  }
}

@media (min-width: var(--breakpoint-md)) {
  .app-header,
  .app-footer {
    padding: var(--spacing-lg) var(--spacing-md);
  }
}