/* books-web – dunkles, modernes Design */

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-hover: #1c2430;
  --border: #2d333b;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #d2995c;
  --accent-pdf: #c9543e;
  --accent-epub: #4a7fb5;
  --serif: Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.wrap {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Header ---------- */
.site-header {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #11161d 0%, var(--bg) 100%);
}

.site-header h1 {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-header .dash { color: var(--accent); }

.tagline {
  color: var(--muted);
  margin-top: 0.4rem;
  font-size: 1.05rem;
}

/* ---------- Hero (Einzelband) ---------- */
.hero {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}

.hero-cover img {
  width: 240px;
  max-width: 40vw;
  border-radius: 6px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.55);
  display: block;
}

.hero-text h2,
.series-head h2 {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3.5vw, 2.3rem);
  margin-bottom: 0.3rem;
}

.subtitle {
  color: var(--accent);
  font-style: italic;
  font-family: var(--serif);
  margin-bottom: 1rem;
}

.hero-text p { margin-bottom: 0.8rem; max-width: 65ch; }

/* ---------- Reihe ---------- */
.series { padding: 3rem 0; }

.series-head { margin-bottom: 2rem; }

.series-desc {
  color: var(--muted);
  max-width: 75ch;
  margin-top: 0.6rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
  align-items: start;
}

/* ---------- Karten ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.card-cover {
  position: relative;
  aspect-ratio: 2 / 3;
  background: #0a0d12;
}

.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.band-badge {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  background: rgba(13, 17, 23, 0.85);
  color: var(--accent);
  border: 1px solid var(--border);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.55rem;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}

.card-body { padding: 1rem 1.1rem 1.2rem; }

.card-body h3 {
  font-family: var(--serif);
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
  min-height: 2.6em;
}

/* ---------- Klappentext (aufklappbar) ---------- */
.klappentext { margin-bottom: 0.9rem; }

.klappentext summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 0.85rem;
  list-style: none;
  user-select: none;
}

.klappentext summary::before {
  content: "▸ ";
  color: var(--accent);
}

.klappentext[open] summary::before { content: "▾ "; }

.klappentext summary:hover { color: var(--text); }

.klappentext p {
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: 0.6rem;
}

/* ---------- Buttons ---------- */
.downloads {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 0.4rem;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  border-radius: 5px;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #0d1117;
  transition: filter 0.15s ease;
}

.btn:hover { filter: brightness(1.15); }

.btn-pdf { background: var(--accent-pdf); color: #fff; }
.btn-epub { background: var(--accent-epub); color: #fff; }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .hero { flex-direction: column; gap: 1.5rem; }
  .hero-cover img { width: 200px; }
  .card-body h3 { min-height: 0; }
}