.player-root { position: relative; }
.player-root:fullscreen { background: var(--white); }
.player-root:fullscreen .player-wrap { min-height: 100vh; }
.player-root:fullscreen ~ header.site-header,
.player-root:fullscreen header.site-header { display: none; }

.player-wrap {
  position: relative;
  display: grid;
  grid-template-columns: 320px 1fr;
  min-height: calc(100vh - 124px);
  transition: grid-template-columns .25s ease;
}
.player-wrap.sidebar-collapsed { grid-template-columns: 0px 1fr; }
@media (max-width: 900px) {
  .player-wrap { grid-template-columns: 1fr; }
  .player-sidebar { max-height: 320px; }
}

.player-sidebar {
  background: var(--white);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  overflow-x: hidden;
  transition: opacity .2s ease;
}
.player-wrap.sidebar-collapsed .player-sidebar { opacity: 0; pointer-events: none; }

.sidebar-collapse-btn, .sidebar-expand-btn {
  position: absolute;
  top: 18px;
  z-index: 5;
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--navy);
  cursor: pointer;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
}
.sidebar-collapse-btn { left: 296px; transition: left .25s ease; }
.player-wrap.sidebar-collapsed ~ .sidebar-collapse-btn,
#sidebar-collapse-btn.hide { display: none; }
.sidebar-expand-btn { left: 12px; display: none; }
.player-root.collapsed .sidebar-collapse-btn { display: none; }
.player-root.collapsed .sidebar-expand-btn { display: block; }

.player-toolbar {
  display: flex; justify-content: flex-end; gap: 10px;
  padding: 20px 48px 0;
}
.toolbar-btn {
  background: var(--white);
  border: 1px solid var(--line);
  color: var(--navy);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}
.toolbar-btn:hover { border-color: var(--navy); background: var(--cream); }
.sidebar-top {
  padding: 32px 28px 20px;
  border-bottom: 1px solid var(--line);
}
.sidebar-back { font-size: 0.82rem; color: var(--text-muted); }
.sidebar-back:hover { color: var(--tan); }
.sidebar-top h2 { margin: 10px 0 14px; color: var(--navy); font-size: 1.3rem; }
.progress-track { height: 6px; border-radius: 999px; background: var(--cream-dark); overflow: hidden; }
.progress-fill { height: 100%; background: var(--tan); width: 0%; transition: width .3s ease; }
.progress-label { font-size: 0.75rem; color: var(--text-muted); margin-top: 6px; }

.module-list { padding: 8px 0; }
.module-block { border-bottom: 1px solid var(--cream-dark); }
.module-header {
  width: 100%;
  background: none; border: none; cursor: pointer;
  text-align: left;
  padding: 16px 28px;
  display: flex; justify-content: space-between; align-items: center;
  gap: 10px;
}
.module-header:hover { background: var(--cream); }
.module-header .mh-text { display: flex; flex-direction: column; gap: 2px; }
.module-header .mh-title { font-weight: 600; color: var(--navy); font-size: 0.92rem; }
.module-header .mh-count { font-size: 0.72rem; color: var(--text-muted); }
.module-header .mh-chevron { color: var(--navy); transition: transform .2s ease; flex-shrink: 0; }
.module-block.open .mh-chevron { transform: rotate(90deg); }

.step-list { display: none; padding-bottom: 8px; }
.module-block.open .step-list { display: block; }
.step-item {
  width: 100%;
  background: none; border: none; cursor: pointer;
  text-align: left;
  padding: 11px 28px 11px 46px;
  display: flex; align-items: center; gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.step-item:hover { background: var(--cream); }
.step-item.active { background: var(--cream); color: var(--navy); font-weight: 600; }
.step-item.locked { opacity: 0.45; cursor: not-allowed; }
.step-item .si-icon { flex-shrink: 0; width: 16px; }
.step-item.done .si-icon::before { content: "✓"; color: var(--tan); }
.step-item.locked .si-icon::before { content: "🔒"; font-size: 0.7rem; }
.step-item:not(.done):not(.locked) .si-icon::before { content: "○"; }

.player-content { padding: 56px 48px 80px; overflow-y: auto; }
.player-content-inner { max-width: 820px; margin: 0 auto; }
.player-content h1 { color: var(--navy); margin-bottom: 32px; font-size: 2rem; font-weight: 400; }

.step-card {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px;
  min-height: 260px;
  line-height: 1.65;
}
.step-card h3 { color: var(--navy); margin-top: 0; }
.info-badges { display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0; }
.info-badge {
  background: var(--lavender-soft);
  border: none;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--navy);
}
.info-box {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  color: var(--text-muted);
}
.info-todo {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--gold-dark);
  font-style: italic;
}

.placeholder-card {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  gap: 10px;
  padding: 40px 20px;
  color: var(--text-muted);
}
.placeholder-card .ph-icon { font-size: 2rem; }

.step-actions { margin-top: 40px; display: flex; justify-content: flex-end; gap: 12px; }
.step-actions .btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Flashcards */
.flashcard-deck { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.flashcard {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 16/9;
  perspective: 1200px;
  cursor: pointer;
}
.flashcard-inner {
  position: relative; width: 100%; height: 100%;
  transition: transform .5s;
  transform-style: preserve-3d;
}
.flashcard.flipped .flashcard-inner { transform: rotateY(180deg); }
.flashcard-face {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  border-radius: 14px;
  box-shadow: var(--shadow);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  text-align: center;
  font-weight: 600;
  color: var(--white);
  font-size: 1.05rem;
}
.flashcard-face.front { background: var(--navy); }
.flashcard-face.back { background: var(--lavender); color: var(--navy); transform: rotateY(180deg); }
.flashcard-nav { display: flex; gap: 14px; align-items: center; }
.flashcard-nav button {
  background: var(--white); border: 1px solid var(--line); color: var(--navy);
  border-radius: 999px; width: 36px; height: 36px; cursor: pointer; font-size: 1rem;
}
.flashcard-counter { font-size: 0.85rem; color: var(--text-muted); }

/* Paywall */
.paywall-screen {
  grid-column: 1 / -1;
  min-height: calc(100vh - 68px);
  display: flex; align-items: center; justify-content: center;
  background: var(--cream);
  padding: var(--sp-6);
}
.paywall-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-10) var(--sp-8);
  max-width: 440px;
  width: 100%;
  text-align: center;
}
.paywall-icon { font-size: 2.2rem; margin-bottom: var(--sp-4); }
.paywall-card h1 { font-size: 1.4rem; color: var(--navy); margin: 0 0 var(--sp-3); }
.paywall-card p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: var(--sp-6); }
.paywall-actions { display: flex; flex-direction: column; gap: var(--sp-3); }
.paywall-back { display: block; margin-top: var(--sp-6); font-size: 0.86rem; color: var(--text-muted); }
.paywall-back:hover { color: var(--navy); }


/* ---------- Lernmodus: Vollbild & Menü ausblenden ---------- */
body.focus-mode header.site-header { display: none; }
body.focus-mode .player-wrap { min-height: 100vh; }
.player-root:fullscreen { background: var(--white); width: 100vw; height: 100vh; }
.player-root:fullscreen .player-wrap { min-height: 100vh; }
.toolbar-btn.active { background: var(--navy); color: var(--white); border-color: var(--navy); }

/* ---------- Kostenlose Vorschau ---------- */
.free-tag {
  margin-left: auto; font-size: 0.7rem; font-weight: 600;
  background: var(--tan); color: #fff; padding: 2px 8px; border-radius: 999px;
}
.step-item.locked .free-tag { display: none; }

.paywall-inline {
  text-align: center; padding: 48px 32px;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
}
.paywall-inline .pw-icon { font-size: 2.2rem; }
.paywall-inline h3 { margin: 0; color: var(--navy); font-size: 1.3rem; font-weight: 400; }
.paywall-inline p { margin: 0; color: var(--navy); font-size: 0.98rem; max-width: 460px; line-height: 1.6; }
.pw-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 10px; }

/* Vorschau-Hinweisleiste über dem Player */
.preview-bar {
  grid-column: 1 / -1;
  background: var(--tan); color: #fff;
  padding: 12px 24px; text-align: center; font-size: 0.95rem; font-weight: 500;
  display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap;
}
.preview-bar a { color: #fff; text-decoration: underline; font-weight: 700; }

/* ============================================================
   Vollbild, ablenkungsfreies Lernen
   Alles ausser dem Inhalt verschwindet: Kopfzeile, Seitenmenü,
   Werkzeugleiste. Navigiert wird über die schlanke Leiste oben.
   ============================================================ */
.player-root:fullscreen,
.player-root:-webkit-full-screen {
  background: var(--white);
  width: 100vw; height: 100vh;
  overflow: hidden;
}

/* Seitenmenü und dessen Schalter komplett ausblenden */
.player-root.fs-on .player-toolbar,
.player-root.fs-on .preview-bar { display: none !important; }

.player-root.fs-on .player-wrap { min-height: 100vh; height: 100vh; padding: 0; }
.player-root.fs-on .player-sidebar { padding-top: 72px; }
.player-root.fs-on .sidebar-collapse-btn { top: 84px; }
.player-root.fs-on .sidebar-expand-btn { display: none; }
.player-root.fs-on .player-content {
  height: 100vh; padding: 84px 40px 96px; overflow-y: auto;
}
/* Ohne Menü bekommt der Inhalt die volle Breite */
.player-root.fs-on.collapsed .player-content { padding-left: 40px; }
.player-root.fs-on .player-content-inner { max-width: 760px; }

/* Kopfzeile der Website im Vollbild ebenfalls weg */
body.is-fullscreen header.site-header,
body.is-fullscreen footer.site-footer { display: none; }

/* Schlanke Steuerleiste */
.fs-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 60;
  display: flex; align-items: center; gap: var(--sp-4);
  padding: 12px 20px;
  background: rgba(252, 248, 245, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.fs-bar[hidden] { display: none; }

.fs-nav {
  width: 38px; height: 38px; border-radius: 50%; flex-shrink: 0;
  border: 1.5px solid var(--line); background: var(--white); cursor: pointer;
  display: flex; align-items: center; justify-content: center; color: var(--navy);
  transition: border-color .16s ease, background .16s ease;
}
.fs-nav svg { width: 18px; height: 18px; }
.fs-nav:hover:not(:disabled) { border-color: var(--navy); background: var(--cream); }
.fs-nav:disabled { opacity: 0.3; cursor: default; }

.fs-meta { display: flex; flex-direction: column; gap: 1px; min-width: 0; flex: 1; }
.fs-meta strong { font-size: 0.96rem; font-weight: 700; color: var(--navy); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fs-meta span { font-size: 0.78rem; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.fs-track { width: 140px; height: 5px; border-radius: 999px; background: var(--cream-dark); overflow: hidden; flex-shrink: 0; }
.fs-track span { display: block; height: 100%; background: var(--tan); border-radius: 999px; transition: width .3s ease; }

.fs-exit {
  display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0;
  border: 1.5px solid var(--line); background: var(--white); border-radius: 999px;
  padding: 9px 16px; cursor: pointer;
  font: 600 0.86rem var(--font); color: var(--navy);
  transition: border-color .16s ease, background .16s ease;
}
.fs-exit svg { width: 15px; height: 15px; }
.fs-exit:hover { border-color: var(--navy); background: var(--cream); }
.fs-exit kbd {
  font: 600 0.72rem var(--font); background: var(--cream-dark); color: var(--brown);
  padding: 2px 7px; border-radius: 5px; border: none;
}

@media (max-width: 760px) {
  .player-root.fs-on .player-content { padding: 76px 20px 64px; }
  .fs-track { display: none; }
  .fs-exit kbd { display: none; }
  .fs-meta span { display: none; }
}

/* Ersatz-Vollbild für Browser ohne Element-Vollbild (iPhone-Safari) */
body.fs-fallback { overflow: hidden; }
body.fs-fallback .player-root {
  position: fixed; inset: 0; z-index: 500;
  background: var(--white); overflow: hidden;
}