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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  color: #111;
  background: #ffffff;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* HEADER */
header {
  background: #ffffff;
  color: #111;
  padding: 1rem 1.5rem 0.75rem;
  border-bottom: 1px solid #111;
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-container {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.logo img {
  height: 60px;
  width: auto;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
  font-size: 0.95rem;
  justify-content: center;
}

nav a {
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

nav a:hover {
  background: #111;
  color: #fff;
}

.nav-link-disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* HERO */
.hero {
  background: #ffffff;
  color: #111;
  padding: 2.5rem 1.5rem 3rem;
}

.hero-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
  text-align: center;
}

/* Buchcover */
.cover-frame {
  max-width: 320px;
  border-radius: 6px;
  overflow: hidden;
  box-shadow:
    0 14px 28px rgba(0,0,0,0.25),
    0 10px 10px rgba(0,0,0,0.22);
}

.hero-meta {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  opacity: 0.7;
  margin-bottom: 0.25rem;
}

.hero-title {
  font-size: clamp(1.8rem, 2.8vw + 1rem, 2.4rem);
  margin-bottom: 0.4rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-subtitle {
  font-size: 1rem;
  max-width: 34rem;
  margin: 0 auto 0.75rem;
}

/* Buttons */
.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: center;
  margin-top: 0.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  border: none;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s ease;
}

.btn-primary {
  background: #111;
  color: #fff;
  box-shadow: 0 6px 16px rgba(0,0,0,0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.35);
  background: #000;
}

.btn-ghost {
  background: transparent;
  color: #111;
  border: 1px solid #111;
}

.btn-ghost:hover {
  background: #111;
  color: #fff;
}

.hero-note {
  font-size: 0.8rem;
  opacity: 0.7;
}

/* MAIN */
main {
  max-width: 960px;
  margin: 2.5rem auto 3rem;
  padding: 0 1.5rem;
}

section {
  margin-bottom: 2.5rem;
}

h2 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

p {
  margin-bottom: 0.8rem;
  font-size: 0.98rem;
}

.divider {
  height: 1px;
  background: #ddd;
  margin: 1.5rem 0 1.75rem;
}

/* Kontakt / Impressum */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.info-box {
  background: #fff;
  border-radius: 10px;
  padding: 1.3rem 1.4rem;
  box-shadow: 0 4px 18px rgba(0,0,0,0.05);
  font-size: 0.95rem;
}

.info-box h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.info-box a {
  text-decoration: underline;
}

/* FOOTER */
footer {
  border-top: 1px solid #ddd;
  padding: 1rem 1.5rem 1.5rem;
  background: #ffffff;
  font-size: 0.9rem;
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-links a {
  text-decoration: underline;
}

/* MOBILE */
@media (max-width: 720px) {
  header {
    position: static;
  }
}