/* =========================================================
   PHPautomation — Buchwebseite
   Stil: sachlich, klassisch, Verlags-Ästhetik
   Konsistent mit ~/php-buch-website/style.css (statische Landing-Page)
   ========================================================= */

:root {
  --color-paper: #faf8f4;
  --color-ink: #1a1a1a;
  --color-ink-soft: #3a3a3a;
  --color-ink-muted: #6a6a6a;
  --color-rule: #d6d0c4;
  --color-accent: #8b2a2a;
  --color-accent-soft: #f3e8e8;

  --font-serif: 'Crimson Pro', 'Source Serif Pro', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-width: 1100px;
  --gutter: clamp(1.5rem, 4vw, 3rem);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-ink);
  background-color: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.page-wrap,
.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--gutter);
}

/* ---------- Skip-Link (a11y) ---------- */
.skip {
  position: absolute;
  left: -9999px;
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 0.5rem 1rem;
  z-index: 1000;
}
.skip:focus { left: 0; top: 0; }

/* ---------- Site-Header ---------- */
.site-header {
  border-bottom: 1px solid var(--color-rule);
  background-color: var(--color-paper);
  padding: 1rem 0;
  margin-bottom: 2rem;
}

.site-header .nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-ink);
  font-family: var(--font-serif);
}

.brand-mark {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 600;
  font-size: 1.5rem;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

.brand-name {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-header nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.site-header nav a {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color 0.15s ease;
}
.site-header nav a:hover,
.site-header nav a:focus-visible { color: var(--color-accent); }

/* ---------- Eyebrow / Section-Heads ---------- */
.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin-bottom: 1rem;
}

/* ---------- Hero: Cover + Buchinfo ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(280px, 380px) 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  padding: 2rem 0 4rem;
  border-bottom: 1px solid var(--color-rule);
  margin-bottom: 4rem;
}

.cover { text-align: center; }

.cover img {
  width: 100%;
  max-width: 380px;
  height: auto;
  display: block;
  margin: 0 auto;
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.08),
    0 8px 24px rgba(0, 0, 0, 0.18),
    0 20px 48px rgba(0, 0, 0, 0.12);
  border-radius: 2px;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  cursor: zoom-in;
}

.cover img:hover {
  transform: translateY(-4px);
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.08),
    0 12px 32px rgba(0, 0, 0, 0.22),
    0 28px 56px rgba(0, 0, 0, 0.14);
}

.book-info h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin-bottom: 0.5rem;
}

.book-info .subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-style: italic;
  font-weight: 400;
  color: var(--color-ink-soft);
  margin-bottom: 2rem;
}

.meta {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-ink-muted);
  border-top: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
  padding: 1rem 0;
  margin-bottom: 2rem;
}
.meta p { margin: 0.25rem 0; }

.meta-label {
  display: inline-block;
  min-width: 5rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.7rem;
  color: var(--color-ink-soft);
  margin-right: 0.75rem;
}

/* ---------- CTA ---------- */
.cta { margin-top: 1rem; }

.cta-button,
.button-primary {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-paper);
  background-color: var(--color-accent);
  padding: 0.875rem 2rem;
  border-radius: 2px;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.2s ease;
  border: none;
  cursor: pointer;
}
.cta-button:hover,
.button-primary:hover {
  background-color: #6e1f1f;
  transform: translateY(-1px);
}
.cta-button:focus-visible,
.button-primary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

/* ---------- Section-Headings (h2 in Inhalts-Elementen) ---------- */
section { margin-bottom: 4rem; }

h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-rule);
}

.klappentext p,
.themen p,
.bestellen p {
  margin-bottom: 1.25rem;
  max-width: 65ch;
}

.zielgruppe,
blockquote {
  font-style: italic;
  color: var(--color-ink-soft);
  border-left: 3px solid var(--color-accent);
  padding: 0.5rem 0 0.5rem 1.25rem;
  margin-top: 1.5rem !important;
}

/* ---------- Themen-Grid ---------- */
.themen-grid,
ul.themen {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.5rem 2rem;
  font-size: 1rem;
  line-height: 1.5;
}

.themen-grid li,
ul.themen li {
  padding: 0.625rem 0 0.625rem 1.5rem;
  position: relative;
  border-bottom: 1px dotted var(--color-rule);
}

.themen-grid li::before,
ul.themen li::before {
  content: "§";
  position: absolute;
  left: 0;
  top: 0.625rem;
  color: var(--color-accent);
  font-weight: 600;
  font-family: var(--font-serif);
}

code {
  font-family: 'JetBrains Mono', Consolas, Monaco, monospace;
  font-size: 0.85em;
  background-color: var(--color-accent-soft);
  padding: 0.1em 0.35em;
  border-radius: 2px;
}

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 5rem;
  padding-top: 2rem;
  padding-bottom: 2rem;
  border-top: 1px solid var(--color-rule);
  text-align: center;
}

.site-footer p {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-ink-muted);
  letter-spacing: 0.02em;
  margin: 0.4rem 0;
}

.site-footer a {
  color: var(--color-ink-soft);
  text-decoration: underline;
  text-decoration-color: var(--color-rule);
}
.site-footer a:hover { color: var(--color-accent); }

/* ---------- Lightbox (Cover-Click) ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  background-color: rgba(20, 20, 20, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  cursor: zoom-out;
  opacity: 0;
  transition: opacity 0.25s ease;
  padding: 2rem;
}
.lightbox.visible { opacity: 1; }
.lightbox img {
  max-width: min(90vw, 600px);
  max-height: 90vh;
  height: auto;
  box-shadow:
    0 10px 40px rgba(0, 0, 0, 0.6),
    0 30px 80px rgba(0, 0, 0, 0.5);
  border-radius: 2px;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    text-align: center;
  }
  .cover img { max-width: 280px; }
  .meta p { text-align: center; }
  .zielgruppe, blockquote { text-align: left; }
  .themen-grid, ul.themen { grid-template-columns: 1fr; }
  .site-header .nav { flex-direction: column; align-items: flex-start; }
}

/* ---------- Print ---------- */
@media print {
  body { background: white; }
  .cta-button,
  .button-primary,
  .cover img:hover {
    transform: none;
    box-shadow: none;
  }
  .site-header, .site-footer { display: none; }
}

/* ---------- Reveal-Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html { scroll-behavior: auto; }
  .cover img { transition: none; }
}