/* Gemeinsames Gerüst für Übersichts- und Kapitelseiten (Themen mit Einzelseiten) */
/* Übersicht & Kapitelseiten */
.page-head{max-width:1180px;margin:auto;padding:110px 20px 4px}.page-head .mini{margin-top:12px}.page-head h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.05;margin:.25rem 0 .8rem}.page-head .lead{margin:0}
.overview-head{max-width:1180px;margin:auto;padding:120px 20px 8px}.overview-head h1{font-size:clamp(2.4rem,6vw,4.6rem);line-height:1;margin:0 0 .8rem}.overview-head p{font-size:1.12rem;max-width:640px;color:var(--color-muted);margin:0}
.group{padding:30px 0 6px}.group h2{font-size:1.05rem;letter-spacing:.09em;text-transform:uppercase;color:var(--color-accent-text);margin:0 0 14px}
.chapters{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.chapter-card{display:flex;flex-direction:column;gap:6px;min-height:150px;text-decoration:none;color:var(--color-text);background:var(--color-surface);border:1px solid var(--color-line);border-radius:18px;padding:20px;box-shadow:var(--shadow-sm);transition:transform .2s,border-color .2s}
.chapter-card:hover,.chapter-card:focus-visible{border-color:var(--color-accent);transform:translateY(-2px)}
.chapter-card .num{font-family:var(--font-heading);font-size:2rem;line-height:1;color:var(--color-accent-text)}.chapter-card h3{margin:0;font-size:1.2rem}.chapter-card p{margin:0;color:var(--color-muted);font-size:.95rem}
.chapter-card .state{margin-top:auto;font-size:.85rem;font-weight:800;color:var(--color-accent-text);min-height:1.3em}.chapter-card.done{border-color:var(--color-accent);background:var(--color-accent-tint)}
.overview-progress{max-width:420px;margin-top:22px}.overview-progress .mini{margin:6px 0 0}
.chapter-foot{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;border-top:1px solid var(--color-line);margin-top:34px;padding-top:22px}
.chapter-foot a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;font-weight:700}
@media(prefers-reduced-motion:reduce){.chapter-card{transition:none}.chapter-card:hover{transform:none}}
.page-head .section-kicker{text-transform:uppercase;letter-spacing:.11em;color:var(--color-accent-text);font-weight:800;font-size:.77rem}
.page-head .lead{font-size:1.08rem;color:var(--color-muted);max-width:900px;margin:0}
.overview-head .lead-list{margin:18px 0 0;padding-left:20px;color:var(--color-muted);max-width:640px}
.overview-note{max-width:640px;margin-top:22px}
.mini{font-size:.9rem;color:var(--color-muted)}
/* Kapitel abschließen: Umriss in der Themenfarbe, beim Überfahren leichte Füllung, erledigt = volle Füllung + Haken */
.done-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:8px 20px;border-radius:999px;border:2px solid var(--color-primary);background:transparent;color:var(--color-primary);font:inherit;font-weight:700;cursor:pointer;transition:background-color .25s ease,color .25s ease,gap .25s ease}
.done-btn:hover{background:color-mix(in srgb,var(--color-primary) 10%,transparent)}
.done-btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px}
.done-btn .done-icon{width:0;opacity:0;transform:scale(.4);transition:width .25s ease,opacity .25s ease,transform .3s cubic-bezier(.3,1.6,.5,1)}
.done-btn .done-icon path{stroke-dasharray:24;stroke-dashoffset:24;transition:stroke-dashoffset .35s ease .1s}
.done-btn.is-done{background:var(--color-primary);color:var(--color-primary-content)}
.done-btn.is-done:hover{background:color-mix(in srgb,var(--color-primary) 88%,var(--color-text))}
.done-btn.is-done .done-icon{width:20px;opacity:1;transform:none}
.done-btn.is-done .done-icon path{stroke-dashoffset:0}
@media(prefers-reduced-motion:reduce){.done-btn,.done-btn .done-icon,.done-btn .done-icon path{transition:none}}
/* kleiner Zurück-Knopf über dem Titel der Themen-Übersichten (zur Startseite) */
.back-btn{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:6px 16px 6px 12px;margin-bottom:14px;border-radius:999px;border:1.5px solid color-mix(in srgb,var(--color-primary) 55%,transparent);color:var(--color-primary);font-size:.92rem;font-weight:700;text-decoration:none;transition:background-color .2s ease,border-color .2s ease}
.back-btn:hover{background:color-mix(in srgb,var(--color-primary) 10%,transparent);border-color:var(--color-primary)}
.back-btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px}
.back-btn svg{transition:transform .2s ease}.back-btn:hover svg{transform:translateX(-2px)}
@media(prefers-reduced-motion:reduce){.back-btn,.back-btn svg{transition:none}.back-btn:hover svg{transform:none}}

/* Videoplayer, lädt erst auf Klick (js/video.js) */
.video{position:relative;aspect-ratio:16/9;margin:12px 0 4px;border:1px solid var(--color-line);border-radius:12px;overflow:hidden;background:var(--color-surface-2)}.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.video-load{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;width:100%;padding:0 16px 3.6rem;border:0;background:transparent;color:var(--color-text);font:inherit;font-weight:800;cursor:pointer}.video-play{display:grid;place-items:center;width:52px;height:52px;border-radius:50%;background:var(--color-primary);color:var(--color-primary-content);font-size:1.3rem;padding-left:3px}.video-load:hover .video-play,.video-load:focus-visible .video-play{transform:scale(1.08)}.video small{position:absolute;left:0;right:0;bottom:8px;padding:0 14px;text-align:center;line-height:1.35;color:var(--color-muted);font-size:.78rem;pointer-events:none}
.video small .video-revoke{pointer-events:auto;background:none;border:0;padding:4px 2px;font:inherit;color:inherit;text-decoration:underline;cursor:pointer}