@import url('https://fonts.googleapis.com/css2?family=Montserrat&display=swap');

body, h1, h2, h3 {
  font-family: 'Montserrat', sans-serif;
}

body {
  font-size: 18px;
  margin: 0;
}

/* =========================
   TYPOGRAFIE
========================= */
h1 { font-size: 60px; }
h2 { font-size: 48px; }
h3 { font-size: 32px; }

/* =========================
   BERG FARBPALETTE
========================= */
:root {
  --mountain-dark: #050b1a;     /* tiefes Nachtblau */
  --mountain-mid:  #0b1f3a;     /* Bergschatten-Blau */
  --mountain-light:#1f3b5c;     /* eisiges Blau */
  --snow-accent:   #bfe9ff;     /* Eislicht */
  --danger-accent: #ff3b2f;     /* Warnrot (Gipfel / Gefahr) */

  --mountain-gradient: linear-gradient(
    135deg,
    var(--mountain-dark) 0%,
    var(--mountain-mid) 35%,
    var(--mountain-light) 70%,
    #3a4a5c 100%
  );
}

/* =========================
   HINTERGRUND
========================= */
body {
  background: var(--mountain-gradient);
  background-attachment: fixed;
  background-size: cover;
  color: white;
}

/* =========================
   HEADER / OBERE LEISTE
========================= */
header {
  background: linear-gradient(
    90deg,
    #020617,
    #0b1f3a,
    #111827
  );

  border-bottom: 3px solid var(--snow-accent);

  box-shadow: 0 10px 25px rgba(0,0,0,0.6);

  padding: 20px;
}

/* Navigation im Header */
nav a {
  color: var(--snow-accent);
  text-decoration: none;
  margin: 0 15px;
  font-size: 18px;
  transition: 0.3s;
}

nav a:hover {
  color: var(--danger-accent);
  text-shadow: 0 0 10px var(--danger-accent);
}

/* =========================
   INHALTSBEREICHE
========================= */
main, footer {
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(8px);

  margin: 20px;
  padding: 20px;
  border-radius: 12px;

  border: 1px solid rgba(255,255,255,0.08);
}

/* =========================
   BERG-KARTEN
========================= */
.mountain-card {
  background: rgba(255,255,255,0.06);
  border-left: 5px solid var(--snow-accent);

  padding: 20px;
  margin: 20px 0;

  border-radius: 12px;

  transition: 0.3s;
}

.mountain-card:hover {
  transform: translateY(-5px);
  border-left: 5px solid var(--danger-accent);
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
}

/* =========================
   TITEL STYLE
========================= */
h1 {
  text-align: center;
  letter-spacing: 3px;
}

h2 {
  color: var(--snow-accent);
}

h3 {
  color: #dbeafe;
}