/* Livres d'exemple à feuilleter (livres-exemples.html, de/beispielbuecher.html, en/sample-books.html) */
.demo-container { max-width: 1100px; margin: 0 auto; padding: 2rem 1rem 4rem; }
.demo-breadcrumb { font-size: 0.85rem; color: var(--text-light); margin-bottom: 1.2rem; }
.demo-breadcrumb a { color: var(--text-light); text-decoration: underline; }
.demo-container h1 { font-size: clamp(1.6rem, 4vw, 2.3rem); line-height: 1.25; color: var(--primary); margin-bottom: 0.8rem; }
.demo-intro { font-size: 1.05rem; line-height: 1.7; color: var(--text); max-width: 760px; margin-bottom: 1.6rem; }

.demo-controls { display: flex; flex-wrap: wrap; gap: 14px 28px; margin-bottom: 1.4rem; }
.demo-group { display: flex; flex-direction: column; gap: 8px; }
.demo-group__label { font-size: 0.78rem; font-weight: 800; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.06em; }
.demo-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.demo-pill {
  font-family: var(--font); font-size: 0.92rem; font-weight: 700; color: var(--night-900);
  background: var(--white); border: 2px solid var(--border); border-radius: 100px;
  padding: 7px 16px; cursor: pointer; transition: border-color 0.15s ease, background 0.15s ease;
}
.demo-pill:hover { border-color: var(--sun-400); }
.demo-pill[aria-pressed="true"] { background: var(--sun-400); border-color: var(--sun-400); }
.demo-pill small { font-weight: 600; color: var(--text-light); margin-left: 4px; }
.demo-pill[aria-pressed="true"] small { color: var(--night-900); }

.demo-stage {
  position: relative; background: var(--bg-section); border-radius: var(--radius-xl);
  padding: clamp(14px, 3vw, 36px); display: flex; flex-direction: column; align-items: center; gap: 16px;
}
.demo-book { display: flex; justify-content: center; width: 100%; max-width: 980px; touch-action: pan-y pinch-zoom; user-select: none; }
.demo-page { flex: 0 1 50%; aspect-ratio: 1 / 1; background: var(--creme); box-shadow: 0 10px 30px rgba(20, 35, 74, 0.16); overflow: hidden; }
.demo-page img { width: 100%; height: 100%; display: block; object-fit: cover; }
.demo-page--empty { background: transparent; box-shadow: none; }
.demo-page--left { border-radius: 6px 0 0 6px; }
.demo-page--right { border-radius: 0 6px 6px 0; }
.demo-book--spread .demo-page--left:not(.demo-page--empty) { box-shadow: -6px 10px 30px rgba(20, 35, 74, 0.16), inset -18px 0 24px -18px rgba(0, 0, 0, 0.18); }
.demo-book--spread .demo-page--right:not(.demo-page--empty) { box-shadow: 6px 10px 30px rgba(20, 35, 74, 0.16), inset 18px 0 24px -18px rgba(0, 0, 0, 0.12); }
.demo-book--single .demo-page { flex-basis: 100%; max-width: 560px; border-radius: 6px; }
.demo-book.is-turning .demo-page img { opacity: 0.35; transition: none; }
.demo-page img { transition: opacity 0.25s ease; }

.demo-nav { display: flex; align-items: center; gap: 16px; }
.demo-nav button {
  width: 48px; height: 48px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--primary); color: var(--white); font-size: 1.3rem; line-height: 1;
  box-shadow: var(--shadow-soft); transition: transform 0.15s ease, opacity 0.15s ease;
}
.demo-nav button:hover:not(:disabled) { transform: scale(1.06); }
.demo-nav button:disabled { opacity: 0.3; cursor: default; }
.demo-counter { font-size: 0.92rem; font-weight: 700; color: var(--text-light); min-width: 120px; text-align: center; }
.demo-hint { font-size: 0.82rem; color: var(--text-light); margin: 0; text-align: center; }

.demo-info { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin: 2rem 0; }
.demo-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.2rem 1.4rem; }
.demo-card h2 { font-size: 1.1rem; color: var(--primary); margin: 0 0 0.5rem; }
.demo-card p { font-size: 0.95rem; line-height: 1.6; margin: 0; color: var(--text); }
.demo-cta { text-align: center; margin-top: 1rem; }
.demo-cta p { color: var(--text-light); font-size: 0.92rem; margin-top: 0.7rem; }