:root {
  --primary: #00d4ff;
  --secondary: #0972ff;
  --background: #001533;
  --text-light: #ffffff;
  --card-bg: rgba(255, 255, 255, 0.08);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Roboto', sans-serif;
  font-size: 16px;
  background: var(--background);
  color: var(--text-light);
  line-height: 1.6;
  margin: 0;
  padding: 20px;
  min-height: 100vh;
}

h1, h2, h3 {
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.3rem; }

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: var(--secondary);
}

#header {
  text-align: center;
  margin-bottom: 20px;
}
#header img {
  max-width: 40px;
  vertical-align: middle;
  margin-right: 8px;
}

/* --- 3‑Spalten Layout --- */
#page {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.column {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  transition: var(--transition);
}
.column:hover {
  transform: translateY(-5px);
}

.column h3 {
  border-bottom: 1px solid rgba(255,255,255,0.2);
  padding-bottom: 8px;
  margin-bottom: 12px;
  text-align:center;
}

.column ul {
  list-style: none;
}
.column li {
  margin-bottom: 10px;
}
.column a {
  display: block;
  padding: 6px 8px;
  border-radius: 6px;
  transition: var(--transition);
}
.column a:hover {
  background: rgba(255,255,255,0.15);
  color: #fff;
}

/* Responsive */
@media (min-width: 600px) {
  #page { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  #page { grid-template-columns: repeat(3, 1fr); }
}