/* =====================================
   CSS Reset und Variablen
   ===================================== */

:root {
  /* Farbvariablen */
  --color-bg: #f6f8fa;
  --color-text: #1b1b1b;
  --color-primary: #2a6bb0;
  --color-accent: #35823f;
  --color-border: #d0d7de;
  
  /* Typografie und Abstände */
  --font-base: 'Segoe UI', system-ui, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.5;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --border-radius: 4px;
  
  /* Breakpoints */
  --breakpoint-sm: 640px;
  --breakpoint-md: 1024px;
  --breakpoint-lg: 1440px;
}

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

html, body {
  height: 100%;
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* =====================================
   App-Shell
   ===================================== */

.app-shell {
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 100%;
  min-height: 100vh;
  width: 100%;
}

.app-shell header,
.app-shell footer {
  background-color: var(--color-primary);
  color: #fff;
  padding: var(--spacing-md);
}

.app-shell main {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.app-shell footer {
  text-align: center;
  font-size: 0.875rem;
}

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

/* Responsiveness */
@media (min-width: var(--breakpoint-md)) {
  .app-shell main {
    padding: var(--spacing-lg);
    gap: var(--spacing-lg);
  }
}