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

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #f5f5f5;
  background: #000;
}

/* Hintergrundbild */

.bg {
  position: fixed;
  inset: 0;
  background: #000 url("./assets/safe-cool.png") center center / cover no-repeat;
  filter: grayscale(40%) brightness(0.35);
  z-index: -2;
}

.center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

/* Karte */

.card {
  max-width: 900px;
  width: 100%;
  background: radial-gradient(circle at top, rgba(255,255,255,0.08), rgba(0,0,0,0.9));
  border-radius: 26px;
  padding: 28px 24px 24px;
  box-shadow:
    0 30px 80px rgba(0,0,0,0.75),
    0 0 0 1px rgba(255,255,255,0.05);
  backdrop-filter: blur(32px);
}

@media (min-width: 900px) {
  .card {
    padding: 40px 46px 32px;
  }
}

/* Header */

.card-header {
  text-align: center;
  margin-bottom: 18px;
}

.stage-label {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin-bottom: 6px;
}

.title {
  margin: 0;
  font-size: clamp(28px, 4vw, 36px);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Blöcke */

.block {
  font-size: 15px;
  line-height: 1.5;
}

.block p {
  margin: 0 0 12px;
}

.block-alt {
  font-family: "Georgia", "Times New Roman", serif;
  font-size: 15px;
}

.alt-intro {
  font-size: 15px;
}

.block-modern {
  margin-top: 12px;
}

.block-modern h2 {
  font-size: 16px;
  margin: 18px 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.block-modern ul {
  padding-left: 20px;
  margin: 0 0 10px;
}

.block-modern li {
  margin-bottom: 4px;
}

.aber {
  margin-top: 4px;
}

.note {
  display: block;
  margin-top: 4px;
  opacity: 0.75;
  font-size: 12px;
}

.bold {
  font-weight: 600;
}

.final-line {
  margin-top: 10px;
  font-weight: 600;
}

/* Divider */

.divider {
  border: 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin: 18px 0 14px;
}

/* Netzwerk-Markierung */

.highlight-network {
  color: #ff3b3b;
  font-weight: 800;
  letter-spacing: 0.08em;
}

/* Footer / Zurück-Button */

.card-footer {
  margin-top: 20px;
  text-align: center;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.28);
  color: #f5f5f5;
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: radial-gradient(circle at top left,
    rgba(255,255,255,0.12),
    rgba(0,0,0,0.9)
  );
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.back-btn:hover {
  background: radial-gradient(circle at top left,
    rgba(255,255,255,0.18),
    rgba(0,0,0,0.95)
  );
  transform: translateY(-1px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.7);
}