/* Florian Bliefert – Autorenseite. Keine externen Ressourcen (Fonts etc.), alles lokal. */

:root {
  --ink: #14202e;
  --ink-soft: #4a5868;
  --paper: #fbfaf7;
  --paper-alt: #f1eee7;
  --line: #ddd8cc;
  --navy: #173a5e;
  --navy-deep: #0f2740;
  --accent: #c93d1e;
  --accent-hover: #a8321a;
  --radius: 10px;
  --serif: "Iowan Old Style", "Charter", "Georgia", "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --wrap: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--navy); }
h1, h2, h3 { font-family: var(--serif); line-height: 1.2; margin: 0 0 .6em; font-weight: 600; }
h1 { font-size: clamp(2rem, 4.2vw, 3.1rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section-alt { background: var(--paper-alt); }
.eyebrow {
  font-size: .8rem; text-transform: uppercase; letter-spacing: .14em;
  color: var(--accent); font-weight: 600; margin-bottom: .8em;
}
.lead { font-size: 1.2rem; color: var(--ink-soft); max-width: 46em; }
.small { font-size: .9rem; color: var(--ink-soft); }

/* Buttons */
.btn {
  display: inline-block; padding: 14px 26px; border-radius: 999px;
  font-weight: 600; text-decoration: none; border: 2px solid transparent;
  transition: background .15s, color .15s, border-color .15s;
  font-size: 1rem; cursor: pointer; font-family: var(--sans);
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { border-color: var(--navy); color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: #fff; }
.btn-light { background: #fff; color: var(--navy-deep); }
.btn-light:hover { background: var(--paper-alt); }
.btn-small { padding: 8px 16px; font-size: .9rem; background: var(--navy); color: #fff; }
.btn-block { display: block; text-align: center; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 1.6em 0 1em; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(251, 250, 247, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { font-family: var(--serif); font-size: 1.25rem; font-weight: 600; color: var(--ink); text-decoration: none; white-space: nowrap; }
.site-header nav { display: flex; align-items: center; gap: 22px; }
.site-header nav a { text-decoration: none; color: var(--ink-soft); font-size: .95rem; }
.site-header nav a:hover { color: var(--ink); }
.site-header nav .nav-cta { background: var(--accent); color: #fff; padding: 8px 16px; border-radius: 999px; font-weight: 600; }
.site-header nav .nav-cta:hover { background: var(--accent-hover); color: #fff; }

/* Hero */
.hero { padding: 72px 0 88px; background: linear-gradient(180deg, var(--paper) 0%, var(--paper-alt) 100%); }
.hero-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 64px; align-items: center; }
.meta { font-size: .9rem; color: var(--ink-soft); }
.hero-cover { display: flex; justify-content: center; }
.hero-cover img {
  width: 100%; max-width: 340px; height: auto;
  border-radius: 2px 4px 4px 2px;
  box-shadow: 0 1px 2px rgba(0,0,0,.1), 0 24px 48px -12px rgba(15,39,64,.45);
}

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.card h3 { color: var(--navy); }
.card p { margin: 0; color: var(--ink-soft); }

/* Zielgruppen */
.audience { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin: 32px 0 48px; }
.audience h3 { border-top: 3px solid var(--accent); padding-top: 14px; }
.audience p { color: var(--ink-soft); }

.cite-box { background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--navy); border-radius: var(--radius); padding: 26px 28px; }
.cite-apa { font-family: var(--serif); font-size: 1.05rem; }
.cite-box summary { cursor: pointer; color: var(--navy); font-weight: 600; }
.cite-box pre { background: var(--paper-alt); padding: 16px; border-radius: 6px; overflow-x: auto; font-size: .82rem; line-height: 1.5; }

/* Kaufen */
.buy { background: var(--navy-deep); color: #fff; }
.buy h2 { color: #fff; }
.buy p { color: rgba(255,255,255,.8); }
.buy-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; align-items: center; }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 32px; margin: 28px 0 0; }
.facts dt { font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: rgba(255,255,255,.6); }
.facts dd { margin: 2px 0 0; font-weight: 600; }
.shops { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.15); border-radius: var(--radius); padding: 28px; }
.shops-label { margin: 22px 0 10px; font-size: .85rem; text-transform: uppercase; letter-spacing: .1em; }
.shop-links { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.shop-links a { color: #fff; border: 1px solid rgba(255,255,255,.35); padding: 8px 16px; border-radius: 999px; text-decoration: none; font-size: .95rem; }
.shop-links a:hover { background: rgba(255,255,255,.12); }
.buy .small { color: rgba(255,255,255,.65); margin: 0; }

/* Autor */
.author-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 64px; align-items: start; }
.portrait { position: sticky; top: 96px; }
.portrait img { width: 100%; height: auto; aspect-ratio: 2 / 3; object-fit: cover; border-radius: var(--radius); box-shadow: 0 20px 40px -16px rgba(15,39,64,.45); }
.stats { list-style: none; padding: 0; margin: 32px 0 8px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.stats li { border-top: 3px solid var(--accent); padding-top: 12px; }
.stats strong { display: block; font-family: var(--serif); font-size: 2rem; line-height: 1.1; color: var(--navy); }
.stats span { font-size: .9rem; color: var(--ink-soft); }

/* Keynotes */
.section-dark { background: var(--navy); color: #fff; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark .lead { color: rgba(255,255,255,.82); }
.section-dark .eyebrow { color: #ff9f85; }
.talks-group { margin: 44px 0 0; font-size: .85rem; font-family: var(--sans); text-transform: uppercase; letter-spacing: .12em; color: rgba(255,255,255,.7); }
.talks { list-style: none; padding: 0; margin: 16px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.talks li {
  display: flex; flex-direction: column; gap: 6px;
  border: 1px solid rgba(255,255,255,.2); border-radius: var(--radius);
  padding: 24px; background: rgba(255,255,255,.04);
}
.talk-year { font-size: .85rem; letter-spacing: .1em; color: #ff9f85; font-weight: 600; }
.talk-place { font-family: var(--serif); font-size: 1.35rem; }
.talk-title { color: rgba(255,255,255,.8); font-style: italic; }

/* Publikationen */
.pub-group { margin-top: 40px; color: var(--navy); }
.pubs { list-style: none; padding: 0; margin: 0; }
.pubs li { display: grid; grid-template-columns: 64px 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.pub-year { font-variant-numeric: tabular-nums; color: var(--ink-soft); font-weight: 600; }
.pub-body strong { font-weight: 600; }
.pub-more { margin-top: 32px; }
.pub-more summary { cursor: pointer; font-weight: 600; color: var(--navy); }
.pub-more .pubs { margin-top: 12px; }
.pub-note { margin-top: 28px; }

/* Abschluss */
.closing { background: var(--paper-alt); text-align: center; }
.closing-inner { max-width: 720px; }
.closing p { color: var(--ink-soft); font-size: 1.15rem; }

/* Rechtliche Seiten */
.legal .wrap { max-width: 760px; }
.legal h1 { font-size: clamp(1.8rem, 3.4vw, 2.4rem); margin-bottom: 1em; }
.legal h2 { font-size: 1.25rem; margin-top: 2em; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0; font-size: .9rem; color: var(--ink-soft); }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-inner p { margin: 0; }
.footer-inner nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.footer-inner a { color: var(--ink-soft); }

/* Responsive */
@media (max-width: 900px) {
  .hero-grid, .buy-inner, .author-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-cover { order: -1; }
  .hero-cover img { max-width: 240px; }
  .cards, .audience { grid-template-columns: 1fr 1fr; }
  .portrait { max-width: 320px; position: static; }
  .talks { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .site-header nav a:not(.nav-cta) { display: none; }
  .section { padding: 64px 0; }
  .wrap { padding: 0 16px; }
  .cards, .audience, .facts, .stats, .talks { grid-template-columns: 1fr; }
  .pubs li { grid-template-columns: 52px 1fr; gap: 10px; }
}