/* ============================================================
   KI-Kurs „Lernen durch Fragen" — gemeinsames Stylesheet
   Palette: „Ethereal Luminescence" (aus DESIGN.md)
   Tiefes Teal als Basis, Sonnenuntergangs-Orange + Gold als Akzente.
   ============================================================ */

/* ---- Farbtokens & Maße als CSS-Variablen ----
   So sind alle Farben an einer Stelle definiert und leicht änderbar. */
:root {
  --bg:            #001717;   /* Grundhintergrund */
  --surface:       #002425;   /* Karten-Grundfläche */
  --surface-2:     #013031;   /* etwas hellere Fläche */
  --surface-3:     #103b3c;   /* hellste Fläche / Hover */
  --border:        rgba(192, 234, 235, 0.15); /* zarte „Lichtkante" */
  --border-strong: rgba(192, 234, 235, 0.30);

  --text:          #e3f6f6;   /* Haupttext (luminöses Creme-Teal) */
  --text-muted:    #a9c4c4;   /* Nebentext */

  --teal:          #96d1d3;   /* Akzent 1 — „Mitnehmen" */
  --teal-deep:     #004b4d;
  --orange:        #ffb59d;   /* Akzent 2 — „Deine eigene Frage" */
  --orange-deep:   #b83900;
  --gold:          #fcbb37;   /* Akzent 3 — NotebookLM */
  --gold-deep:     #593e00;
  --on-accent:     #00211f;   /* dunkler Text auf hellem Akzent */

  /* Callout-Wichtigkeitsleiter (leise -> laut): blau/grün/gold/orange/rot + violett = Kurs-KI.
     *-deep = dunkler Text AUF dem hellen Akzentbalken (Kontrast >= 7:1 im dunklen Theme). */
  --blue:          #7fb6e6;   /* Callout „Beispiel / Gut zu wissen" */
  --blue-deep:     #06243f;
  --green:         #9bd17a;   /* Callout „Tipp" */
  --green-deep:    #143807;
  --violet:        #c3b3f2;   /* Kurs-KI (Frag-die-KI, ki-Callout, NotebookLM) */
  --violet-deep:   #2a1a5e;
  --red:           #e24b4a;   /* „Sehr wichtig" — Rahmen/Akzent */
  --red-bar:       #b3261e;   /* „Sehr wichtig" — Balken, weißer Text (~6.5:1) */

  --radius:    16px;
  --radius-sm: 10px;
  --maxw:      1240px;
  --sidebar:   280px;
  --topbar-h:  66px;

  --font-head: "Playfair Display", Georgia, serif;
  --font-body: "Manrope", system-ui, sans-serif;

  /* Vom Nutzer wählbare Darstellungsgröße (Einstellungen-Menü, app.js).
     Default 1.1 = Grundschrift gegenüber dem Ur-Zustand um ~1–2 Punkte
     angehoben. Wird per JS auf <html> überschrieben (localStorage). */
  --font-scale: 1.1;

  --page-bg-image: url("bg07.png");
  --course-bg-image: url("bg14-flip-y.png");
}

* { box-sizing: border-box; }

/* `zoom` skaliert wie der Browser-Zoom (inkl. korrekter Viewport-Einheiten). */
html { scroll-behavior: smooth; zoom: var(--font-scale); }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  /* Sanfter Teal→Orange-Verlauf als atmosphärischer Untergrund */
  background-image:
    radial-gradient(900px 500px at 80% -10%, rgba(255,181,157,0.10), transparent 60%),
    radial-gradient(800px 600px at 0% 110%, rgba(150,209,211,0.10), transparent 55%);
  background-attachment: fixed;
}
body.login-page { --page-bg-image: url("bg18.png"); }
body.course-page { --page-bg-image: var(--course-bg-image); overflow: hidden; }

/* Seitenweites, festes Hintergrundbild (bleibt beim Scrollen stehen) */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -2;
  background: var(--page-bg-image) center / cover no-repeat;
}
/* dunkler Schleier darüber, damit Texte/Karten lesbar bleiben */
body::after {
  content: ""; position: fixed; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(0,23,23,.28), rgba(0,23,23,.48));
}

h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 600; line-height: 1.2; }
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Glas-Karten ---- */
.glass {
  background: rgba(0, 36, 37, 0.66);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 30px rgba(0,0,0,0.45);
}

/* ============================================================
   Login-Seite
   ============================================================ */
.login-page { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 22px; padding: 28px; }
.login-card { width: 100%; max-width: 430px; padding: 38px 34px; text-align: center; }
.login-card .brand { justify-content: center; margin-bottom: 16px; }
.login-card h1 { font-size: 30px; color: #fff; margin: 6px 0 4px; }
.login-card .sub { color: var(--text-muted); margin: 0 0 24px; font-size: 15px; }
.login-card form { display: flex; flex-direction: column; gap: 14px; text-align: left; }
.login-card label { font-size: 13px; color: var(--text-muted); display: flex; flex-direction: column; gap: 6px; font-weight: 600; }
.login-card input { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; color: var(--text); font: inherit; font-size: 15px; }
.login-card input:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(252,187,55,.18); }
.login-card .password-field { position: relative; display: block; }
.login-card .password-field input { width: 100%; padding-right: 48px; }
.login-card .password-toggle {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  width: 34px; height: 34px; border-radius: 999px; border: 1px solid var(--border);
  background: rgba(0,23,23,.32); color: var(--text-muted); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
}
.login-card .password-toggle svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.login-card .password-toggle .eye-closed { display: none; }
.login-card .password-toggle.is-visible .eye-open { display: none; }
.login-card .password-toggle.is-visible .eye-closed { display: block; }
.login-card .password-toggle:hover,
.login-card .password-toggle:focus-visible { color: var(--text); border-color: var(--border-strong); outline: none; }
.login-card input.input-error {
  color: var(--orange); border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(255,181,157,.16);
}
.login-card input.input-error::placeholder { color: var(--orange); opacity: 1; }
.login-card .btn { margin-top: 8px; justify-content: center; width: 100%; }
.login-card .err { color: var(--orange); font-size: 13.5px; margin: 4px 0 0; text-align: center; }
.login-card .pw-match { color: var(--orange); font-size: 12.5px; margin: 4px 0 0; }
.login-card .ok-msg { color: var(--teal); font-size: 13.5px; margin: 4px 0 0; text-align: center; }
.login-card .hint { color: var(--text-muted); font-size: 12.5px; margin: 20px 0 0; }
.login-card .hint.forgot-row { margin: 10px 0 0; text-align: right; }
.login-card label .opt { color: var(--text-muted); font-weight: 400; }
.mobile-app-hint[hidden] { display: none !important; }
.mobile-app-hint { position: fixed; inset: 0; z-index: 300; display: grid; place-items: center; padding: 20px; }
.mobile-app-hint__backdrop { position: absolute; inset: 0; background: rgba(0,18,18,.72); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.mobile-app-hint__box { position: relative; z-index: 1; width: min(430px, 100%); padding: 26px 24px; text-align: center; }
.mobile-app-hint__eyebrow { display: inline-block; margin-bottom: 10px; color: var(--gold); font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.mobile-app-hint__box h2 { margin: 0 0 10px; color: #fff; font-size: 24px; line-height: 1.2; }
.mobile-app-hint__box p { margin: 0; color: var(--text-muted); font-size: 14px; line-height: 1.55; }
.mobile-app-hint__note { margin-top: 16px; padding: 12px 14px; border: 1px solid rgba(252,187,55,.28); border-left: 3px solid var(--gold); border-radius: 8px; background: rgba(252,187,55,.1); text-align: left; }
.mobile-app-hint__note strong { display: block; margin-bottom: 4px; color: var(--gold); font-size: 13px; }
.mobile-app-hint__note span { display: block; color: var(--text-muted); font-size: 13.5px; line-height: 1.45; }
.mobile-app-hint__closing { margin-top: 14px !important; }
.mobile-app-hint__actions { display: flex; flex-direction: column; gap: 10px; margin-top: 20px; }
.mobile-app-hint__actions .btn { width: 100%; justify-content: center; }
.pw-rules { list-style: none; margin: 2px 0 0; padding: 0; display: flex; flex-direction: column; gap: 3px; }
.pw-rules li { position: relative; padding-left: 20px; font-size: 12.5px; color: var(--text-muted); }
.pw-rules li::before {
  content: "○"; position: absolute; left: 2px; top: -1px; color: var(--text-muted); font-size: 12px;
}
.pw-rules li.ok { color: var(--teal); }
.pw-rules li.ok::before { content: "✓"; color: var(--teal); }
.video-frame { position: relative; width: 100%; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 12px; background: #000; }
.video-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }
.login-video { width: 100%; max-width: 430px; padding: 8px; }

/* ============================================================
   Kopfzeile (globale Navigation)
   ============================================================ */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 20px;
  padding: 14px 24px;
  background: rgba(0, 18, 18, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-logo { width: 36px; height: 36px; object-fit: contain; flex: 0 0 auto;
  filter: drop-shadow(0 0 10px rgba(255,181,157,.25)); }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text strong { font-family: var(--font-head); font-size: 19px; font-weight: 700; color: var(--text); letter-spacing: .3px; }
.brand-text small { font-size: 13px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase;
  color: #ffc62b; margin-top: 2px; text-shadow: 0 0 10px rgba(255,198,43,.25); }
.topnav { display: flex; align-items: center; gap: 18px; margin-left: 8px; }
.topnav a { color: var(--text-muted); font-size: 15px; }
.topnav a:hover, .topnav a.active { color: var(--text); text-decoration: none; }
.topbar .spacer { flex: 1; }

/* Kopf-Navigation: "Start"-Aufklappmenü + Modul-Liste (additiv) */
.topnav-menu { position: relative; }
.topnav-menu > summary {
  list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 5px;
  color: var(--text-muted); font-size: 15px;
}
.topnav-menu > summary::-webkit-details-marker { display: none; }
.topnav-menu > summary:hover { color: var(--text); }
.topnav-menu > summary .chev { font-size: 11px; transition: transform .18s; }
.topnav-menu[open] > summary { color: var(--text); }
.topnav-menu[open] > summary .chev { transform: rotate(180deg); }
.topnav-dropdown {
  position: absolute; top: calc(100% + 10px); left: 0; z-index: 60;
  min-width: 184px; display: flex; flex-direction: column; gap: 2px;
  padding: 8px; border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(6, 24, 50, .97);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 16px 40px rgba(0,0,0,.4);
}
.topnav-dropdown a {
  display: block; padding: 8px 12px; border-radius: 7px;
  color: var(--text-muted); font-size: 14px;
}
.topnav-dropdown a:hover { background: rgba(190,221,255,.10); color: var(--text); text-decoration: none; }
.topnav-dropdown a.active { color: var(--teal); }
/* Modul-Block im Aufklappmenü (v.a. mobil sichtbar). */
.topnav-dd-mods { margin: 4px 0; padding: 4px 0;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
/* Auf Desktop stehen die Module als Pills oben -> im Menü ausgeblendet. */
@media (min-width: 901px) { .topnav-dd-mods { display: none; } }
.topnav-mods { display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.topnav-mods-label {
  color: var(--text-muted); font-size: 12px; font-weight: 800;
  letter-spacing: .02em;
  margin-right: 2px;
}
.topnav-mod {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 30px; padding: 4px 9px; border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted); font-size: 13.5px; font-weight: 700;
}
.topnav-mod:hover { color: var(--text); border-color: var(--border-strong); text-decoration: none; }
.topnav-mod.active { color: var(--teal); border-color: var(--teal); background: rgba(150,209,211,.12); }

/* Mini-Fortschritt + Reset in der Kopfzeile */
.topprogress { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-muted); }
.topprogress .bar { width: 120px; }
.btn-ghost {
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 6px 12px; font: inherit; font-size: 13px; cursor: pointer;
}
.btn-ghost:hover { color: var(--text); border-color: var(--border-strong); }
.menu-toggle { display: none; background: none; border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 6px 10px; cursor: pointer; font-size: 18px; }

/* Immer sichtbarer „KI Coach"-Knopf in der Kopfzeile */
.btn-coach { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
  padding: 8px 15px; border-radius: 999px; font: inherit; font-weight: 700; font-size: 13.5px;
  color: var(--on-accent); text-decoration: none;
  background: linear-gradient(45deg, var(--orange-deep), var(--gold));
  box-shadow: 0 0 14px rgba(252,187,55,.30); }
.btn-coach:hover { text-decoration: none; transform: translateY(-1px); box-shadow: 0 0 20px rgba(252,187,55,.45); }
.btn-notebook {
  display: inline-flex; align-items: center; white-space: nowrap;
  padding: 8px 14px; border-radius: 999px; font: inherit; font-weight: 800; font-size: 13px;
  color: var(--teal); text-decoration: none; border: 1px solid rgba(150,209,211,.38);
  background: rgba(150,209,211,.11);
}
.btn-notebook:hover { color: #fff; border-color: rgba(150,209,211,.65); text-decoration: none; }

/* NotebookLM Hover-Menü (eigener Link) */
.notebook-menu { position: relative; display: inline-flex; }
.notebook-dropdown {
  position: absolute; top: 100%; right: 0; margin-top: 8px;
  width: 290px; padding: 16px; box-sizing: border-box;
  background: rgba(14,26,38,.97); border: 1px solid rgba(150,209,211,.30);
  border-radius: 14px; box-shadow: 0 18px 40px rgba(0,0,0,.45);
  z-index: 120; color: #eaf2f4; text-align: left;
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .16s ease, transform .16s ease, visibility .16s;
}
/* unsichtbare Brücke, damit das Menü beim Rübergehen nicht zuklappt */
.notebook-dropdown::before { content: ""; position: absolute; top: -10px; left: 0; right: 0; height: 12px; }
.notebook-menu:hover .notebook-dropdown,
.notebook-menu:focus-within .notebook-dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.notebook-dropdown .nb-title { display: block; font-size: 13px; font-weight: 800; color: #fff; }
.notebook-dropdown .nb-hint { margin: 6px 0 10px; font-size: 12px; line-height: 1.4; color: rgba(234,242,244,.72); }
.notebook-dropdown .nb-input {
  width: 100%; box-sizing: border-box; padding: 9px 11px; font: inherit; font-size: 13px;
  color: #fff; background: rgba(255,255,255,.06);
  border: 1px solid rgba(150,209,211,.40); border-radius: 9px;
}
.notebook-dropdown .nb-input:focus { outline: none; border-color: rgba(150,209,211,.85); background: rgba(255,255,255,.10); }
.notebook-dropdown .nb-actions { display: flex; gap: 8px; margin-top: 10px; }
.notebook-dropdown .nb-actions button {
  flex: 1; padding: 8px 10px; font: inherit; font-weight: 700; font-size: 12px;
  border-radius: 999px; cursor: pointer; border: 1px solid rgba(150,209,211,.40);
}
.notebook-dropdown .nb-save { color: #08151f; background: var(--teal, #96d1d3); border-color: transparent; }
.notebook-dropdown .nb-save:hover { filter: brightness(1.08); }
.notebook-dropdown .nb-reset { color: #eaf2f4; background: transparent; }
.notebook-dropdown .nb-reset:hover { background: rgba(255,255,255,.08); }
.notebook-dropdown .nb-status { display: block; margin-top: 9px; font-size: 12px; min-height: 1em; color: #8fe0b5; }
.notebook-dropdown .nb-status.err { color: #f3a9a0; }

/* Einstellungen — Header-Button (⚙) + Klick-Popover (Schriftgröße) */
.settings-menu { position: relative; display: inline-flex; }
.btn-settings {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; white-space: nowrap;
  padding: 8px 12px; border-radius: 999px; font: inherit; font-weight: 800; font-size: 13px; line-height: 1;
  color: var(--text-muted); cursor: pointer;
  border: 1px solid var(--border); background: var(--surface-2);
}
.btn-settings:hover { color: #fff; border-color: var(--border-strong); }
.btn-settings .ic { font-size: 15px; line-height: 1; }
.settings-popover {
  position: absolute; top: 100%; right: 0; margin-top: 8px;
  width: 280px; padding: 16px; box-sizing: border-box;
  background: rgba(14,26,38,.97); border: 1px solid rgba(150,209,211,.30);
  border-radius: 14px; box-shadow: 0 18px 40px rgba(0,0,0,.45);
  z-index: 120; color: #eaf2f4; text-align: left;
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .16s ease, transform .16s ease, visibility .16s;
}
.settings-menu.open .settings-popover { opacity: 1; visibility: visible; transform: translateY(0); }
.settings-popover .settings-title { display: block; font-size: 13px; font-weight: 800; color: #fff; margin-bottom: 4px; }
.settings-popover .settings-hint { margin: 0 0 12px; font-size: 12px; line-height: 1.4; color: rgba(234,242,244,.72); }
.settings-seg {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px;
}
.settings-seg .seg-btn {
  min-height: 40px; padding: 8px 6px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--text-muted); font: inherit; font-weight: 700; cursor: pointer;
  transition: background .16s, color .16s, border-color .16s;
}
.settings-seg .seg-btn:hover { color: #fff; border-color: var(--border-strong); }
.settings-seg .seg-btn.active { background: var(--teal); color: var(--on-accent); border-color: transparent; }
.settings-seg .seg-btn:nth-child(1) { font-size: 12px; }
.settings-seg .seg-btn:nth-child(2) { font-size: 13px; }
.settings-seg .seg-btn:nth-child(3) { font-size: 14.5px; }
.settings-seg .seg-btn:nth-child(4) { font-size: 16px; }

/* Kontingent — Header-Button + Klick-Popover */
.quota-menu { position: relative; display: inline-flex; }
.btn-quota {
  display: inline-flex; align-items: center; white-space: nowrap;
  padding: 8px 14px; border-radius: 999px; font: inherit; font-weight: 800; font-size: 13px;
  color: var(--gold); text-decoration: none; cursor: pointer;
  border: 1px solid rgba(252,187,55,.38); background: rgba(252,187,55,.10);
}
.btn-quota:hover { color: #fff; border-color: rgba(252,187,55,.65); }
.quota-popover {
  position: absolute; top: 100%; right: 0; margin-top: 8px;
  width: 300px; padding: 16px; box-sizing: border-box;
  background: rgba(14,26,38,.97); border: 1px solid rgba(150,209,211,.30);
  border-radius: 14px; box-shadow: 0 18px 40px rgba(0,0,0,.45);
  z-index: 120; color: #eaf2f4; text-align: left;
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .16s ease, transform .16s ease, visibility .16s;
}
.quota-menu.open .quota-popover { opacity: 1; visibility: visible; transform: translateY(0); }
.quota-popover .quota-title { display: block; font-size: 13px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.quota-popover .quota-loading,
.quota-popover .quota-error { margin: 0; font-size: 12.5px; color: rgba(234,242,244,.72); }
.quota-popover .quota-error { color: #f3a9a0; }
.quota-row + .quota-row { margin-top: 13px; }
.quota-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.quota-head .quota-label { font-size: 13px; font-weight: 700; color: #fff; }
.quota-head .quota-values { font-size: 12px; color: rgba(234,242,244,.78); white-space: nowrap; }
.quota-row.exceeded .quota-head .quota-values { color: #f3a9a0; }
.quota-bar {
  margin-top: 6px; height: 7px; border-radius: 999px; overflow: hidden;
  background: rgba(255,255,255,.10); border: 1px solid var(--border);
}
.quota-bar-fill { display: block; height: 100%; border-radius: 999px;
  background: var(--teal, #96d1d3); transition: width .25s ease; }
.quota-bar-fill.exceeded { background: #e8675a; }
.quota-reset { display: block; margin-top: 5px; font-size: 11.5px; color: rgba(234,242,244,.62); }

/* Hinweis-Kasten im Download-Bereich */
.download-hint {
  max-width: 720px; margin: 0 0 20px; padding: 16px 20px;
  border-left: 3px solid var(--gold);
}
.download-hint p { margin: 0; color: var(--text-muted); font-size: 14.5px; line-height: 1.55; }
.download-hint p + p { margin-top: 8px; }
.download-hint strong { color: var(--text); }
#download .group-label {
  font-size: 15px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  color: var(--gold);
}
#download .group-label.trainer { color: var(--orange); }

/* ============================================================
   Layout: Seitenleiste + Inhalt
   ============================================================ */
.layout { display: flex; gap: 0; align-items: flex-start; }
body.course-page .layout { height: calc(100dvh - var(--topbar-h)); overflow: hidden; }

.sidebar {
  position: sticky; top: var(--topbar-h);
  width: var(--sidebar); flex: 0 0 var(--sidebar);
  height: calc(100dvh - var(--topbar-h)); overflow-y: auto;
  padding: 22px 16px;
  border-right: 1px solid rgba(190,221,255,.18);
  background:
    linear-gradient(180deg, rgba(14, 42, 84, .78), rgba(5, 20, 48, .92)),
    var(--course-bg-image) center / cover no-repeat,
    rgba(5, 20, 48, .94);
}
.sidebar h3 { font-family: var(--font-body); font-size: 12px; letter-spacing: .08em;
  text-transform: uppercase; color: var(--text-muted); margin: 18px 8px 8px; }
.sidebar .group-label { color: var(--gold); }
.sidebar .group-label.trainer { color: var(--orange); }

.navmod { margin-bottom: 6px; }
.navmod > summary {
  list-style: none; cursor: pointer; padding: 9px 10px; border-radius: 8px;
  display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 600; font-size: 14px;
}
.navmod > summary::-webkit-details-marker { display: none; }
.navmod > summary:hover { background: rgba(190,221,255,.10); }
.navmod > summary .chev { margin-left: auto; transition: transform .2s; color: var(--text-muted); font-size: 12px; }
.navmod[open] > summary .chev { transform: rotate(90deg); }
.navmod .blocks { padding: 2px 0 8px 14px; }
.navmod .blocks a {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px; border-radius: 7px; color: var(--text-muted); font-size: 13.5px;
}
.navmod .blocks a:hover { background: rgba(190,221,255,.10); color: var(--text); text-decoration: none; }
.navmod .blocks a.active { background: rgba(150,209,211,0.16); color: var(--teal); }
.navmod .blocks a .dot { width: 14px; height: 14px; flex: 0 0 14px; border-radius: 50%;
  border: 1.5px solid var(--border-strong); }
.navmod .blocks a.done .dot { background: var(--teal); border-color: var(--teal);
  box-shadow: 0 0 8px rgba(150,209,211,.5); }

/* ============================================================
   UNTERKAPITEL-KREISE (Lesefortschritt) — Sidebar + Kapitel-Footer
   leer = ungelesen · rot-orange gefüllt = gelesen · Ring = aktiver Abschnitt
   ============================================================ */
.uk-dots { display: flex; flex-wrap: wrap; align-items: center; }
.uk-dot {
  appearance: none; -webkit-appearance: none; padding: 0; cursor: pointer;
  border-radius: 50%; background: transparent;
  border: 1.5px solid var(--border-strong);
  transition: background .15s ease, border-color .15s ease, box-shadow .15s ease, transform .12s ease;
}
.uk-dot:hover { border-color: var(--orange); transform: scale(1.18); }
.uk-dot.read { background: var(--orange); border-color: var(--orange); }
.uk-dot.active { border-color: var(--orange); box-shadow: 0 0 0 2px rgba(184,57,0,.30), 0 0 8px rgba(255,181,157,.55); }
.uk-dot.read.active { background: var(--orange); box-shadow: 0 0 0 2px rgba(184,57,0,.45), 0 0 9px rgba(255,181,157,.7); }

/* Sidebar: kompakte Reihe unter dem Kapiteltitel (bricht bei Bedarf in 2. Zeile um) */
.navmod .blocks .navblock { display: block; }
.uk-dots-side { gap: 5px; padding: 1px 10px 6px 32px; }
.uk-dots-side .uk-dot { width: 8px; height: 8px; }

/* Footer: größere, klickbare Reihe unter den Zurück/Weiter-Buttons */
.uk-dots-footer { grid-column: 1 / -1; justify-content: center; gap: 9px; padding-top: 2px; }
.uk-dots-footer .uk-dot { width: 11px; height: 11px; }
.uk-dots-footer:empty { display: none; }

/* Startseite mit Modul-Seitenleiste: Lese-/Fragen-Umschalter dort ausblenden (nur im Kapitel sinnvoll) */
.home-page .mode-panel, .home-page .mode-hint { display: none; }

/* Modus-Reiter (oben in der Seitenleiste) */
.mode-panel {
  padding: 12px;
  margin-bottom: 14px;
  border: 1px solid rgba(252,187,55,.34);
  border-left: 4px solid var(--gold);
  border-radius: 8px;
  background: rgba(252,187,55,.055);
  box-shadow: 0 12px 28px rgba(0,0,0,.16);
}
.mode-title {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 9px;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.mode-title-icon { color: var(--gold); font-size: 13px; }
.modetabs { display: grid; grid-template-columns: 1fr; gap: 8px; }
.modetab {
  display: flex; align-items: center; gap: 8px;
  width: 100%;
  padding: 11px 12px;
  border: 1.5px solid var(--border);
  background: var(--surface-2);
  color: var(--text-muted);
  border-radius: 10px;
  cursor: pointer;
  font: inherit;
  font-size: 12.5px;
  font-weight: 800;
  text-align: left;
  transition: background .16s ease, border-color .16s ease, box-shadow .16s ease, transform .12s ease, color .16s ease;
}
.modetab span {
  width: 22px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px;
  font-weight: 900;
  transition: background .16s ease, color .16s ease;
}

/* Ruhezustand: beide Buttons sind bereits farblich unterscheidbar */
.modetab.questions { border-color: rgba(252,187,55,.34); background: rgba(252,187,55,.07); color: var(--text); }
.modetab.reading   { border-color: rgba(150,209,211,.34); background: rgba(150,209,211,.07); color: var(--text); }
.modetab.questions span { background: rgba(252,187,55,.18); color: var(--gold); }
.modetab.reading span   { background: rgba(150,209,211,.18); color: var(--teal); }

/* Mouseover: deutlich kräftiger + leichtes Anheben */
.modetab.questions:hover {
  border-color: rgba(252,187,55,.7);
  background: rgba(252,187,55,.15);
  box-shadow: 0 6px 16px rgba(252,187,55,.16);
  transform: translateY(-1px);
}
.modetab.reading:hover {
  border-color: rgba(150,209,211,.7);
  background: rgba(150,209,211,.15);
  box-shadow: 0 6px 16px rgba(150,209,211,.16);
  transform: translateY(-1px);
}
.modetab.questions:hover span { background: rgba(252,187,55,.3); }
.modetab.reading:hover span   { background: rgba(150,209,211,.3); }

/* Aktiv: kräftigste Hervorhebung mit Farbring + gefülltem Icon */
.modetab.questions.active {
  background: rgba(252,187,55,.22);
  color: #fff;
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(252,187,55,.28), 0 8px 18px rgba(252,187,55,.2);
}
.modetab.reading.active {
  background: rgba(150,209,211,.22);
  color: #fff;
  border-color: var(--teal);
  box-shadow: 0 0 0 2px rgba(150,209,211,.28), 0 8px 18px rgba(150,209,211,.2);
}
.modetab.questions.active span { background: var(--gold); color: var(--on-accent); }
.modetab.reading.active span   { background: var(--teal); color: var(--on-accent); }
.modetab:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

.mode-hint {
  margin: 14px 0 14px;
  padding: 0 4px;
  color: var(--text-muted);
  font-size: 12.5px;
  line-height: 1.35;
}

/* Info-Icon + Tooltip-Bubble am Titel "Kurs Modus" */
.mode-info {
  margin-left: auto;
  position: relative;
  width: 18px; height: 18px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px;
  background: rgba(252,187,55,.16);
  color: var(--gold);
  font-size: 11px; font-weight: 900; font-style: normal;
  letter-spacing: 0; text-transform: none;
  cursor: help;
}
.mode-info:hover, .mode-info:focus-visible { background: rgba(252,187,55,.3); outline: none; }
.mode-tip {
  position: absolute;
  top: calc(100% + 9px);
  right: -4px;
  width: 232px;
  padding: 11px 13px;
  background: #00211f;
  color: var(--text);
  border: 1px solid rgba(252,187,55,.4);
  border-radius: 10px;
  box-shadow: 0 16px 34px rgba(0,0,0,.45);
  font-size: 11.5px; font-weight: 600; line-height: 1.5;
  letter-spacing: 0; text-transform: none;
  opacity: 0; visibility: hidden; transform: translateY(-5px);
  transition: opacity .16s ease, transform .16s ease, visibility .16s;
  z-index: 60;
}
.mode-tip::before {
  content: ""; position: absolute; bottom: 100%; right: 8px;
  border: 6px solid transparent; border-bottom-color: rgba(252,187,55,.4);
}
.mode-tip strong { color: #fff; font-weight: 800; }
.mode-info:hover .mode-tip,
.mode-info:focus .mode-tip,
.mode-info:focus-within .mode-tip { opacity: 1; visibility: visible; transform: translateY(0); }

/* Lese-Ansicht (Normal-Modus) */
.lesson { padding: 22px 26px; margin: 8px 0 4px; line-height: 1.7; color: var(--text); font-size: 16px; }
.lesson h1, .lesson h2, .lesson h3 { font-family: var(--font-head); color: #fff; margin: 20px 0 8px; line-height: 1.3; }
.lesson h2 { font-size: 23px; } .lesson h3 { font-size: 18px; color: var(--teal); }
.lesson p { margin: 11px 0; }
.lesson ul, .lesson ol { margin: 10px 0 10px 22px; } .lesson li { margin: 5px 0; }
.lesson strong { color: #fff; }
.lesson blockquote { border-left: 3px solid var(--gold); background: rgba(252,187,55,.07);
  margin: 14px 0; padding: 10px 16px; border-radius: 6px; color: var(--text-muted); }
.lesson code { background: var(--surface-3); padding: 1px 6px; border-radius: 4px; font-size: .9em; }
.lesson table { width: 100%; border-collapse: collapse; margin: 16px 0; overflow: hidden; border-radius: 7px; }
.lesson th, .lesson td { border: 1px solid var(--border); padding: 9px 10px; text-align: left; vertical-align: top; }
.lesson th { color: #fff; background: rgba(150,209,211,.10); font-weight: 800; }
.lesson td { color: var(--text-muted); background: rgba(255,255,255,.035); }
.lesson img { max-width: 100%; height: auto; border-radius: 7px; }

.content { flex: 1; min-width: 0; padding: 0; }
body.course-page .content { height: 100%; overflow: hidden; }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 28px; }

/* Fester Kapitelplayer */
.content .wrap#modulinhalt { max-width: 1080px; height: calc(100vh - 57px); padding: 10px 22px 14px; }
body.course-page .content .wrap#modulinhalt { height: calc(100% - 8px); }
.chapter-player {
  position: relative; overflow: hidden; display: grid; grid-template-rows: auto 1fr auto;
  height: 100%; min-height: 0; border: 1px solid var(--border); border-radius: var(--radius);
  /* Content-Fläche im dunklen Marineblau der Seitenleiste (leichter Türkis-Einschlag),
     statt des früheren hellblauen Tons — sonst war helle Schrift schlecht lesbar. */
  background: rgba(5, 20, 48, .62); box-shadow: var(--shadow);
}
.chapter-player::before {
  content:""; position:absolute; inset:0; z-index:0;
  /* Dunkles, deckendes Overlay (wie .sidebar) — das Hintergrundbild scheint nur noch
     dezent durch, die Fläche bleibt dunkel und harmoniert mit der Seitenleiste. */
  background:
    linear-gradient(180deg, rgba(10, 38, 62, .90), rgba(4, 18, 42, .95)),
    var(--course-bg-image) center / cover no-repeat;
  opacity:.98;
}
.chapter-player > * { position: relative; z-index: 1; }
.chapter-header {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 16px;
  padding: 14px 18px 12px; border-bottom: 1px solid rgba(190,221,255,.18); background: rgba(18, 48, 92, .42);
}
.chapter-header-main { min-width: 0; }
.chapter-header h1 { color:#fff; margin: 4px 0 0; font-size: clamp(21px,2.6vw,30px); line-height: 1.12; }
.chapter-kicker { margin: 6px 0 0; color: var(--text-muted); font-size: 12px; font-weight: 700; }
/* Kapitel-Beschreibung klar vom Titel absetzen (sonst klebt sie durch den globalen
   negativen Rand direkt darunter und wirkt wie Teil der Überschrift). */
.chapter-header .blocksummary { margin: 9px 0 0; line-height: 1.5; color: rgba(226,238,255,.86); }
.chapter-header-tools {
  min-width: 170px;
  display: grid;
  gap: 9px;
  justify-items: end;
  flex: 0 0 auto;
}
.chapter-header .progress-row { min-width: 150px; width: 100%; }
.chapter-notebook-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 32px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(150,209,211,.45);
  background: rgba(150,209,211,.13);
  color: var(--teal);
  font-size: 12.5px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}
.chapter-notebook-btn:hover {
  color: #fff;
  border-color: rgba(150,209,211,.72);
  background: rgba(150,209,211,.20);
  text-decoration: none;
}
.chapter-notebook-btn span { color: var(--gold); font-size: 12px; }
.chapter-scroll {
  min-height: 0; overflow: auto; padding: 12px 18px 12px; scroll-behavior: auto;
  background: linear-gradient(180deg, rgba(28, 70, 126, .03), rgba(12, 34, 68, .10));
}
.chapter-scroll:focus-visible { outline: 2px solid var(--gold); outline-offset: -2px; }
.lesson-stream { min-height: 240px; margin-top: 2px; margin-bottom: 2px; padding-top: 18px; padding-bottom: 18px; }
.chapter-footer {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px;
  align-items: center; padding: 9px 12px; border-top: 1px solid rgba(190,221,255,.18); background: rgba(12, 36, 76, .62);
}
.chapter-footer-nav { grid-column: 2; display: flex; gap: 8px; align-items: center; justify-content: center; }
.chapter-nav-btn { min-height: 32px; min-width: 78px; padding: 5px 12px; font-size: 12.5px; }
.chapter-footer button:disabled { opacity:.42; cursor:not-allowed; }
/* „Weiter" = klare Vorwärts-Aktion: warmer Marken-Gradient statt unauffälligem Ghost. */
.chapter-footer .chapter-nav-btn[data-next] {
  background: linear-gradient(45deg, var(--orange-deep), var(--gold));
  color: var(--on-accent); border-color: transparent; font-weight: 800;
  box-shadow: 0 0 14px rgba(252,187,55,.32);
}
.chapter-footer .chapter-nav-btn[data-next]:hover { box-shadow: 0 0 20px rgba(252,187,55,.5); transform: translateY(-1px); }
.chapter-footer .chapter-nav-btn[data-next]:disabled { opacity:.42; box-shadow:none; transform:none; }
.chapter-done { grid-column: 3; justify-self: end; display: inline-flex; align-items: center; gap: 8px; color: var(--text-muted); font-size: 13px; white-space: nowrap; }
.chapter-done input { width: 16px; height: 16px; accent-color: var(--teal); }
.chapter-confirm-backdrop {
  position: fixed; inset: 0; z-index: 120;
  display: grid; place-items: center; padding: 20px;
  background: rgba(0, 18, 18, .72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.chapter-confirm { width: min(420px, 100%); padding: 24px; text-align: center; }
.chapter-confirm h2 { margin: 0 0 8px; color: #fff; font-size: 24px; }
.chapter-confirm p { margin: 0; color: var(--text-muted); font-size: 14px; }
.chapter-confirm-actions { display: flex; justify-content: center; gap: 10px; margin-top: 20px; }
.chapter-confirm-actions .btn-coach,
.chapter-confirm-actions .btn-ghost { min-width: 92px; justify-content: center; }

/* ============================================================
   Startseite
   ============================================================ */
.course-intro-video { padding: 32px 0 0; }
.intro-video { padding: 10px; }
.hero {
  position: relative; overflow: hidden;
  padding: 96px 28px 88px; text-align: center;
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: url("bg07.png") center/cover no-repeat;
  opacity: .95;
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(0,23,23,.10), rgba(0,23,23,.55) 55%, rgba(0,23,23,.92) 100%);
}
.hero > * { position: relative; z-index: 2; }
.eyebrow { display: inline-block; font-size: 12px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--gold); border: 1px solid var(--border-strong); border-radius: 999px;
  padding: 6px 14px; margin-bottom: 22px; }
.hero h1 { font-size: clamp(34px, 5vw, 60px); margin: 0 0 10px; color: #fff; }
.hero .motto { font-size: clamp(16px, 2.2vw, 21px); color: var(--teal); font-style: italic; margin: 0 auto 26px; }
.hero p.lead { max-width: 640px; margin: 0 auto 30px; color: var(--text); font-size: 18px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px; cursor: pointer;
  font: inherit; font-weight: 700; font-size: 16px;
  padding: 13px 26px; border-radius: 999px; border: none;
  color: var(--on-accent);
  background: linear-gradient(45deg, var(--orange-deep), var(--gold));
  box-shadow: 0 0 22px rgba(252,187,55,.28);
  transition: transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 0 30px rgba(252,187,55,.45); text-decoration: none; }
.btn.secondary { background: var(--surface-2); color: var(--text); border: 1px solid var(--border-strong); box-shadow: none; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-course-cta { min-width: min(280px, 100%); justify-content: center; }

/* „So funktioniert dieser Kurs" */
.section { padding: 56px 0 0; }
.section h2 { font-size: 30px; text-align: center; margin: 0 0 8px; }
.section .sub { text-align: center; color: var(--text-muted); margin: 0 auto 34px; max-width: 620px; }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 190px), 1fr)); gap: 16px; }
.step {
  min-height: 178px; padding: 22px 18px;
  display: flex; flex-direction: column; align-items: flex-start;
}
.step .n { font-family: var(--font-head); font-size: 30px; color: var(--gold); line-height: 1; }
.step h4 { margin: 12px 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--text-muted); font-size: 14px; }

/* NotebookLM */
.notebook-section { padding-top: 58px; }
.notebook-panel {
  position: relative; overflow: hidden;
  display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr); gap: 22px;
  padding: 30px; border-color: rgba(150,209,211,.28);
}
.notebook-panel::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background:
    linear-gradient(135deg, rgba(150,209,211,.12), transparent 46%),
    linear-gradient(315deg, rgba(252,187,55,.12), transparent 48%);
}
.notebook-panel > * { position: relative; z-index: 1; }
.notebook-copy h2 { text-align: left; margin: 8px 0 12px; font-size: clamp(28px,3vw,38px); color: #fff; }
.notebook-copy p { color: var(--text); max-width: 680px; margin: 0; }
.notebook-video-placeholder {
  display: grid; place-items: center; width: 100%; max-width: 680px;
  aspect-ratio: 16 / 9; margin: 0 0 18px;
  border: 1px dashed rgba(252,187,55,.48); border-radius: 10px;
  background:
    linear-gradient(135deg, rgba(252,187,55,.16), rgba(150,209,211,.08)),
    rgba(0,23,23,.38);
  color: var(--gold); font-weight: 800; letter-spacing: .06em; text-transform: uppercase;
  box-shadow: inset 0 0 30px rgba(0,0,0,.18);
}
.notebook-video-placeholder span {
  padding: 8px 14px; border-radius: 999px;
  border: 1px solid rgba(252,187,55,.35); background: rgba(0,23,23,.42);
  font-size: 12px;
}
.notebook-features { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 22px; }
.notebook-features span {
  border: 1px solid rgba(150,209,211,.24); border-radius: 999px;
  padding: 5px 10px; color: var(--teal); background: rgba(150,209,211,.08); font-size: 12.5px; font-weight: 700;
}
.notebook-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.notebook-card {
  align-self: stretch; padding: 18px; border-radius: 8px;
  border: 1px solid rgba(252,187,55,.28); background: rgba(0,23,23,.42);
}
.notebook-card strong { color: var(--gold); }
.notebook-card ul { margin: 12px 0 0 18px; padding: 0; color: var(--text-muted); font-size: 14px; }
.notebook-card li { margin: 7px 0; }

/* Modul-Kacheln */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.mcard { padding: 22px; display: flex; flex-direction: column; gap: 12px; transition: transform .2s, border-color .2s; }
.mcard:hover { transform: translateY(-3px); border-color: var(--border-strong); text-decoration: none; }
.mcard .chip { align-self: flex-start; font-size: 11px; letter-spacing: .06em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px; }
.chip.teilnehmer { color: var(--teal); background: rgba(150,209,211,.12); }
.chip.trainer    { color: var(--orange); background: rgba(255,181,157,.12); }
.mcard h3 { margin: 0; font-size: 21px; color: var(--text); }
.mcard p { margin: 0; color: var(--text-muted); font-size: 14px; }

/* ---- Fortschrittsbalken (überall genutzt) ---- */
.bar { height: 8px; border-radius: 999px; background: var(--surface-3); overflow: hidden; }
.bar > i { display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--teal), var(--gold)); transition: width .4s ease; }
.bar.small { height: 6px; }
.progress-row { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-muted); }
.progress-row .bar { flex: 1; }

/* Download & Druck */
.downloads { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }
.dl { display: flex; align-items: center; gap: 14px; padding: 16px 18px; text-decoration: none;
  transition: transform .2s, border-color .2s; }
.dl:hover { transform: translateY(-2px); border-color: var(--border-strong); text-decoration: none; }
.dl .ic { width: 38px; height: 38px; flex: 0 0 auto; border-radius: 9px; display: flex; align-items: center;
  justify-content: center; font-size: 18px; font-weight: 800; background: rgba(252,187,55,.14); color: var(--gold); }
.dl .t { color: var(--text); font-weight: 600; display: block; }
.dl .s { color: var(--text-muted); font-size: 13px; }
.dl.dl-featured { border-color: rgba(255,181,157,.4); background: rgba(255,181,157,.05); }
.dl.dl-featured .ic { background: rgba(255,181,157,.16); color: var(--orange); }

/* Cache-Hinweis */
.notice { display: flex; gap: 12px; align-items: flex-start; padding: 14px 18px; margin: 36px 0 0;
  border-left: 3px solid var(--gold); }
.notice .ico { color: var(--gold); }
.notice p { margin: 0; font-size: 14px; color: var(--text-muted); }

/* ============================================================
   Kapitel-/Kapitelseite
   ============================================================ */
.crumbs { font-size: 13px; color: var(--text-muted); padding: 22px 0 0; }
.crumbs a { color: var(--text-muted); }
.blockhead { padding: 8px 0 6px; }
.blockhead h1 { font-size: clamp(28px, 4vw, 40px); margin: 6px 0 10px; color: #fff; }
.blockhead .intro { color: var(--text); font-size: 17px; max-width: 720px; }
.blocksummary { max-width: 760px; color: var(--text-muted); font-size: 16px; margin: -2px 0 12px; }
.blockprog { margin: 18px 0 6px; max-width: 360px; }

/* Medien aus generator_v2.py */
.lesson-media-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin: 16px 0 18px; }
.lesson-media { position: relative; margin: 0; overflow: hidden; border: 1px solid var(--border); border-radius: 8px;
  background: rgba(6, 20, 24, .58); box-shadow: var(--shadow-soft); }
.lesson-media img, .lesson-media video { display: block; width: 100%; height: auto; max-height: 420px; object-fit: cover; background: #061418; }
.lesson-media video { aspect-ratio: 16 / 9; }
.lesson-media figcaption { padding: 10px 12px; color: var(--text-muted); font-size: 13.5px; line-height: 1.45;
  border-top: 1px solid var(--border); background: rgba(255,255,255,.035); }
.media-expand-btn {
  position: absolute; top: 10px; right: 10px; z-index: 2;
  width: 34px; height: 34px; border-radius: 999px;
  border: 1px solid rgba(150,209,211,.62); background: rgba(0,18,18,.72);
  color: var(--teal); font: inherit; font-size: 18px; font-weight: 800;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; box-shadow: var(--shadow-soft);
}
.media-expand-btn:hover { color: #fff; border-color: var(--gold); }
.media-overlay {
  position: fixed; inset: 0; z-index: 130; display: grid; place-items: center;
  padding: 24px; background: rgba(0, 18, 18, .78);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.media-overlay-panel {
  position: relative; width: min(1100px, 96vw); padding: 12px;
  border-color: rgba(150,209,211,.36); background: rgba(0,23,23,.88);
}
.media-overlay-panel video {
  display: block; width: 100%; max-height: min(78vh, 720px);
  aspect-ratio: 16 / 9; background: #000; border-radius: 8px;
}
.media-overlay-panel iframe {
  display: block; width: 100%; height: min(78vh, 720px);
  aspect-ratio: 16 / 9; border: 0; background: #000; border-radius: 8px;
}
.media-overlay-close {
  position: absolute; top: -14px; right: -14px; z-index: 2;
  width: 36px; height: 36px; border-radius: 999px;
  border: 1px solid rgba(150,209,211,.62); background: rgba(0,18,18,.95);
  color: var(--text); font: inherit; font-size: 24px; line-height: 1;
  cursor: pointer; box-shadow: var(--shadow-soft);
}
.media-overlay-close:hover { color: #fff; border-color: var(--gold); }

/* NotebookLM-Aufruf (Kurs-KI-Familie -> violett wie .callout--ki / .ask-ki) */
.callout-nb { display: flex; gap: 14px; align-items: flex-start; padding: 18px 20px; margin: 24px 0 8px;
  border: 1px solid rgba(195,179,242,.30); border-left: 4px solid var(--violet);
  background: rgba(195,179,242,.06); }
.callout-nb .ico { color: var(--violet); font-size: 22px; }
.callout-nb h4 { margin: 0 0 4px; color: var(--violet); font-family: var(--font-body); font-weight: 700; font-size: 15px; }
.callout-nb p { margin: 0; font-size: 14px; color: var(--text-muted); }

/* ── Typisierte Callouts (:::callout <typ>) — Element-Stylebook Ebene 2 (Web+App identisch).
   Design „Kopfbalken": Icon+Label dunkel auf hellem Akzentbalken, Lesetext darunter IMMER
   neutral hell (Farbe nur im Rahmen — Lesbarkeits-Konvention wie GitHub-Alerts/Material).
   Ausnahme „wichtig": dunkelroter Balken mit weißem Text (lauteste Stufe, sparsam!). ── */
.callout { margin: 22px 0; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.callout-head { display: flex; align-items: center; gap: 9px; padding: 8px 14px; line-height: 1.35; }
.callout-ico { flex: 0 0 auto; font-size: 15px; line-height: 1; }
.callout-label { font-size: 11.5px; letter-spacing: .07em; text-transform: uppercase; font-weight: 800; }
.callout-body { padding: 12px 15px 13px; min-width: 0; }
.callout-body > :first-child { margin-top: 0; }
.callout-body > :last-child { margin-bottom: 0; }
.callout-body p { font-size: 14.5px; color: var(--text); margin: 8px 0 0; line-height: 1.65; }
.callout--info    { border-color: rgba(127,182,230,.30); background: rgba(127,182,230,.06); }
.callout--info    > .callout-head { background: var(--blue); color: var(--blue-deep); }
.callout--tipp    { border-color: rgba(155,209,122,.30); background: rgba(155,209,122,.06); }
.callout--tipp    > .callout-head { background: var(--green); color: var(--green-deep); }
.callout--merken  { border-color: rgba(252,187,55,.32);  background: rgba(252,187,55,.06); }
.callout--merken  > .callout-head { background: var(--gold); color: #3a2700; }
.callout--ki      { border-color: rgba(195,179,242,.32); background: rgba(195,179,242,.06); }
.callout--ki      > .callout-head { background: var(--violet); color: var(--violet-deep); }
.callout--warnung { border-color: rgba(255,181,157,.32); background: rgba(255,181,157,.06); }
.callout--warnung > .callout-head { background: var(--orange); color: #4a1b00; }
.callout--wichtig { border-color: rgba(226,75,74,.40);   background: rgba(226,75,74,.08); }
.callout--wichtig > .callout-head { background: var(--red-bar); color: #ffffff; }

/* ── Aufklapp-/Kursfassungs-Boxen (:::ausklapp / :::kursfassung) — deutlich klickbar:
   Kopfzeile wie ein Knopf (Pfeil dreht beim Öffnen, Hover, „Aufklappen"-Etikett).
   Vorher ungestylt (nacktes <details>) -> Klickbarkeit war unsichtbar. ── */
.lesson-collapse { margin: 20px 0; border: 1px solid rgba(150,209,211,.35); border-radius: 12px;
  background: rgba(150,209,211,.05); overflow: hidden; }
.lesson-collapse > summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: 10px;
  padding: 11px 14px; font-weight: 700; font-size: 14.5px; color: var(--teal);
  background: rgba(150,209,211,.10); transition: background .18s; }
.lesson-collapse > summary::-webkit-details-marker { display: none; }
.lesson-collapse > summary::before { content: "▸"; font-size: 15px; line-height: 1; transition: transform .18s; }
.lesson-collapse[open] > summary::before { transform: rotate(90deg); }
.lesson-collapse > summary::after { content: "Aufklappen"; margin-left: auto; flex: 0 0 auto; font-size: 11px;
  letter-spacing: .06em; text-transform: uppercase; font-weight: 700; color: var(--text-muted);
  border: 1px solid var(--border); border-radius: 999px; padding: 3px 9px; }
.lesson-collapse[open] > summary::after { content: "Zuklappen"; }
.lesson-collapse > summary:hover { background: rgba(150,209,211,.16); }
.lesson-collapse-body { padding: 12px 15px 13px; }
.lesson-collapse-body > :first-child { margin-top: 0; }
.lesson-collapse-body > :last-child { margin-bottom: 0; }

/* ── Kopierbarer Prompt-Kasten (prompt-Fence) — Web+App identisch ── */
.prompt-box { margin: 18px 0; border: 1px solid var(--border); border-radius: 10px; background: rgba(255,255,255,.03); overflow: hidden; }
.prompt-box-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 8px 12px; border-bottom: 1px solid var(--border); }
.prompt-box-tag { font-size: 11px; letter-spacing: .07em; text-transform: uppercase; font-weight: 700; color: var(--gold); }
.prompt-box-copy { flex: 0 0 auto; font-size: 13px; padding: 4px 11px; border-radius: 7px; border: 1px solid var(--border); background: transparent; color: var(--text-muted); cursor: pointer; }
.prompt-box-copy:hover { color: var(--gold); border-color: rgba(252,187,55,.45); background: rgba(252,187,55,.10); }
.prompt-box-text { margin: 0; padding: 12px 14px; white-space: pre-wrap; word-break: break-word; font-size: 13.5px; line-height: 1.55; color: var(--text); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

/* Fragenkarte */
.qcard { padding: 18px 20px; margin: 16px 0; transition: border-color .2s; }
.qcard.done { border-color: rgba(150,209,211,.45); }
.qtop { display: flex; gap: 14px; align-items: flex-start; }
.qnum { font-family: var(--font-head); font-size: 22px; color: var(--teal); line-height: 1.2; flex: 0 0 auto; min-width: 26px; }
.qbody { flex: 1; min-width: 0; }
.qtext { font-size: 18px; color: var(--text); margin: 0; }
.qactions { display: flex; gap: 10px; align-items: center; margin-top: 14px; flex-wrap: wrap; }

/* Checkbox „erledigt" */
.check { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none;
  font-size: 14px; color: var(--text-muted); }
.check input { position: absolute; opacity: 0; width: 0; height: 0; }
.check .box { width: 20px; height: 20px; border-radius: 6px; border: 1.5px solid var(--border-strong);
  display: inline-flex; align-items: center; justify-content: center; transition: all .15s; }
.check .box::after { content: "✓"; color: var(--on-accent); font-size: 13px; opacity: 0; }
.check input:checked + .box { background: var(--teal); border-color: var(--teal); box-shadow: 0 0 10px rgba(150,209,211,.5); }
.check input:checked + .box::after { opacity: 1; }
.check input:checked ~ .lbl { color: var(--teal); }
.check input:focus-visible + .box { outline: 2px solid var(--gold); outline-offset: 2px; }

.btn-copy { background: var(--surface-2); border: 1px solid var(--border); color: var(--text-muted);
  border-radius: 999px; padding: 6px 14px; font: inherit; font-size: 13px; cursor: pointer; }
.btn-copy:hover { color: var(--text); border-color: var(--border-strong); }
/* „Mitnehmen" (aufklappbar) */
.mitnehmen { margin-top: 14px; border-top: 1px dashed var(--border); padding-top: 10px; }
.mitnehmen > summary { list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  color: var(--teal); font-size: 13.5px; font-weight: 600; }
.mitnehmen > summary::-webkit-details-marker { display: none; }
.mitnehmen > summary .tag { font-size: 11px; letter-spacing: .05em; text-transform: uppercase;
  background: rgba(150,209,211,.14); color: var(--teal); padding: 2px 8px; border-radius: 999px; }
.mitnehmen p { margin: 10px 0 2px; font-size: 14px; color: var(--text-muted); }

/* „Deine eigene Frage" — wärmster Akzent */
.qcard.eigene { border: 1px solid rgba(255,181,157,.40); border-left: 4px solid var(--orange);
  background: rgba(255,181,157,.05); }
.qcard.eigene .qnum, .qcard.eigene .qtext { color: var(--orange); }
.qcard.eigene .badge { display: inline-block; font-size: 11px; letter-spacing: .06em; text-transform: uppercase;
  color: var(--orange); background: rgba(255,181,157,.14); padding: 3px 10px; border-radius: 999px; margin-bottom: 8px; }
.qcard.eigene .check input:checked + .box { background: var(--orange); border-color: var(--orange); box-shadow: 0 0 10px rgba(255,181,157,.5); }
.qcard.eigene .check input:checked ~ .lbl { color: var(--orange); }

/* Frage als anklickbarer Prompt (Fragenmodus): Klick -> an die Kurs-KI,
   Kopier-Icon daneben. .qtext (18px/Farbe) bleibt erhalten; hier nur Button-Reset. */
.qtext-row { display: flex; align-items: flex-start; gap: 10px; }
.qtext-ask { flex: 1 1 auto; min-width: 0; text-align: left; white-space: normal; cursor: pointer; position: relative;
  font-family: inherit; background: rgba(0,23,23,.35); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 11px 13px 11px 34px; transition: background .18s, border-color .18s, transform .15s; }
.qtext-ask::before { content: "✦"; position: absolute; left: 13px; top: 11px; color: var(--gold); font-weight: 700; }
.qtext-ask:hover { background: rgba(252,187,55,.10); border-color: rgba(252,187,55,.40); transform: translateY(-1px); }
.qtext-ask:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.qcopy-icon { flex: 0 0 auto; width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 8px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text-muted);
  cursor: pointer; font-size: 15px; transition: color .18s, border-color .18s, background .18s; }
.qcopy-icon:hover { color: var(--gold); border-color: rgba(252,187,55,.45); background: rgba(252,187,55,.10); }
.qcopy-icon svg, .ask-ki-copy svg { width: 16px; height: 16px; display: block; }
.qcard.eigene .qtext-ask:hover { background: rgba(255,181,157,.10); border-color: rgba(255,181,157,.38); }
.qcard.eigene .qcopy-icon:hover { color: var(--orange); border-color: rgba(255,181,157,.45); background: rgba(255,181,157,.10); }

/* ============================================================
   "Frag die Kurs-KI" — interaktiver Hybrid-Fragepunkt (Lesemodus, kursweit)
   ============================================================ */
.ask-ki { margin: 20px 0; padding: 14px 16px 16px; border-radius: var(--radius);
  border: 1px solid rgba(195,179,242,.34); border-left: 4px solid var(--violet); background: rgba(195,179,242,.07); }
.ask-ki-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 9px; }
.ask-ki-tag { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; letter-spacing: .07em;
  text-transform: uppercase; font-weight: 800; color: var(--violet); }
.ask-ki-copy { flex: 0 0 auto; width: 30px; height: 30px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 8px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text-muted);
  cursor: pointer; font-size: 15px; transition: color .18s, border-color .18s, background .18s; }
.ask-ki-copy:hover { color: var(--violet); border-color: rgba(195,179,242,.45); background: rgba(195,179,242,.12); }
.ask-ki-q { display: block; width: 100%; text-align: left; white-space: normal; cursor: pointer; position: relative;
  font-family: var(--font-body); font-size: 16.5px; line-height: 1.5; font-weight: 600; color: var(--text);
  background: rgba(0,23,23,.4); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px 14px 12px 38px; transition: border-color .18s, background .18s, transform .15s; }
.ask-ki-q::before { content: "✦"; position: absolute; left: 14px; top: 12px; color: var(--violet); font-weight: 700; }
.ask-ki-q:hover { border-color: rgba(195,179,242,.5); background: rgba(195,179,242,.10); transform: translateY(-1px); }
.ask-ki-q:focus-visible { outline: 2px solid var(--violet); outline-offset: 2px; }
.ask-ki-var { color: var(--violet); background: rgba(195,179,242,.14); border-radius: 5px; padding: 0 4px; font-style: normal; }
.ask-ki-hint { font-size: 14px; color: var(--text-muted); margin: 10px 0 0; line-height: 1.6;
  background: rgba(150,209,211,.07); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 13px; }
.ask-ki-hint-tag { display: inline-block; font-size: 11px; letter-spacing: .05em; text-transform: uppercase;
  color: var(--teal); background: rgba(150,209,211,.14); padding: 2px 8px; border-radius: 999px; margin-right: 8px; font-weight: 700; }
.ask-ki-hint strong { color: var(--text); }

/* Anbieter-Karte (Modul 09 "Was geht mit KI") — je Anbieter eine abgehobene Karte */
.anbieter-card { margin: 22px 0; padding: 18px 20px 20px; border: 1px solid var(--border);
  border-left: 4px solid var(--teal); border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(150,209,211,.06), rgba(150,209,211,.02)); }
.anbieter-card .anbieter-name { margin: 0 0 4px; font-size: 20px; color: #fff;
  display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.anbieter-body > p:first-child { margin-top: 6px; color: var(--text); }
.anbieter-body table { width: 100%; border-collapse: collapse; margin: 14px 0 4px; border-radius: 7px; overflow: hidden; }
.anbieter-body th, .anbieter-body td { border: 1px solid var(--border); padding: 8px 11px; text-align: left; vertical-align: top; }
.anbieter-body th { color: #fff; background: rgba(150,209,211,.12); font-weight: 800; font-size: 14px; }
.anbieter-body td { color: var(--text-muted); background: rgba(255,255,255,.025); font-size: 14.5px; }
.anbieter-body td:first-child { color: var(--teal); font-weight: 700; white-space: nowrap; }
.anbieter-body .ask-ki { margin: 14px 0 2px; }

/* Zurück/Weiter */
.pager { display: flex; justify-content: space-between; gap: 14px; margin-top: 40px; }
.pager a { flex: 1; padding: 16px 18px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface); color: var(--text); }
.pager a:hover { border-color: var(--border-strong); text-decoration: none; }
.pager a.next { text-align: right; }
.pager .k { display: block; font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .06em; }

/* „kopiert!"-Hinweis */
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--teal); color: var(--on-accent); padding: 10px 20px; border-radius: 999px;
  font-weight: 600; font-size: 14px; opacity: 0; pointer-events: none; transition: all .3s; z-index: 100; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============================================================
   Responsiv
   ============================================================ */
/* ============================================================
   Nutzer-Leiste in der Kopfzeile
   ============================================================ */
.profilbar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.profilbar .who { font-size: 12px; color: var(--text-muted); }
.profilbar .user-name { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; color: var(--text); }

/* ============================================================
   Bild-Bänder zwischen Abschnitten
   ============================================================ */
.quoteband {
  position: relative; overflow: hidden;
  margin: 64px 0 8px; border-radius: var(--radius);
  padding: 64px 28px; text-align: center;
}
.quoteband::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: url("band.png") center/cover no-repeat; opacity: .9;
}
.quoteband::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(0,23,23,.55), rgba(0,23,23,.78));
}
.quoteband > * { position: relative; z-index: 2; }
.quoteband .q { font-family: var(--font-head); font-style: italic; font-size: clamp(20px,3vw,30px);
  color: #fff; margin: 0 auto; max-width: 760px; }
.quoteband .by { color: var(--gold); font-size: 14px; margin-top: 12px; letter-spacing: .04em; }

/* Modul-Kopfbanner (Bild direkt als background-image am Element gesetzt) */
.modhead { position: relative; overflow: hidden; border-radius: var(--radius); margin: 22px 0 10px;
  padding: 56px 28px; background-size: cover; background-position: center; min-height: 180px; }
.modhead::after { content:""; position:absolute; inset:0; z-index:1;
  background: linear-gradient(180deg, rgba(0,23,23,.25), rgba(0,23,23,.72)); }
.modhead > * { position: relative; z-index: 2; }
.modhead h1 { font-size: clamp(26px,4vw,38px); color:#fff; margin: 8px 0 0; text-shadow: 0 2px 12px rgba(0,0,0,.5); }
.modhead p { color: #eef; margin: 8px 0 0; max-width: 680px; text-shadow: 0 1px 6px rgba(0,0,0,.5); }

/* Kapitel-Abschnitt mit eigenem Hintergrundbild (Bild je Kapitel per inline-Style) */
.blockband { position: relative; overflow: hidden; border-radius: var(--radius);
  margin: 30px 0; padding: 30px 26px 14px; background-size: cover; background-position: center; }
.blockband::before { content:""; position:absolute; inset:0; z-index:0;
  background: linear-gradient(180deg, rgba(0,23,23,.38), rgba(0,23,23,.60) 45%, rgba(0,23,23,.80)); }
.blockband > * { position: relative; z-index: 1; }
.blockband .blockhead h1 { text-shadow: 0 2px 12px rgba(0,0,0,.55); }

/* Sektion mit zartem Bild-Hintergrund (z. B. Trainer-Bereich) */
.section.onimage { position: relative; overflow: hidden; border-radius: var(--radius); padding: 44px 28px; margin-top: 64px; }
.section.onimage::before { content:""; position:absolute; inset:0; z-index:0;
  background: url("dawn.png") center/cover no-repeat; opacity:.5; }
.section.onimage::after { content:""; position:absolute; inset:0; z-index:1;
  background: linear-gradient(180deg, rgba(0,23,23,.78), rgba(0,23,23,.9)); }
.section.onimage > * { position: relative; z-index: 2; }

/* Trainer-Inhalte: standardmäßig verborgen, per JS eingeblendet */
.trainer-only[hidden] { display: none !important; }

/* ============================================================
   Integrierter Kurschat
   ============================================================ */
.course-chat {
  position: fixed;
  right: 0;
  top: 76px;
  bottom: 18px;
  width: min(380px, calc(100vw - 28px));
  z-index: 80;
  transform: translateX(calc(100% - 50px));
  transition: transform .25s ease;
  pointer-events: none;
}
body.course-chat-open .course-chat { transform: translateX(0); }
body.course-chat-expanded .course-chat {
  width: min(760px, calc(100vw - 28px));
}
.course-chat-tab {
  position: absolute;
  left: 0;
  bottom: 96px;
  width: 50px;
  height: 100px;
  border: 1px solid rgba(150,209,211,.62);
  border-right: 0;
  border-radius: 14px 0 0 14px;
  background: rgba(150,209,211,.94);
  color: #002323;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 2px;
  font-weight: 800;
  font-size: 12px;
  cursor: pointer;
  pointer-events: auto;
  box-shadow: var(--shadow);
}
.course-chat-tab span { font-size: 15px; line-height: 1; }
.course-chat-tab b { line-height: 1; }
.course-chat-tab small { color: #003b3b; font-size: 10px; line-height: 1; }
.course-chat-box {
  height: 100%;
  margin-left: 50px;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-right: 0;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  background: rgba(0,18,18,.96);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  pointer-events: auto;
}
.course-chat-title { display: flex; align-items: center; gap: 10px; min-width: 0; }
.course-chat-title-icon {
  width: 36px; height: 36px; flex: 0 0 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px;
  color: var(--gold);
  background: rgba(252,187,55,.13);
  border: 1px solid rgba(252,187,55,.25);
}
.course-chat-title-icon svg,
.course-chat-avatar svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.course-chat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}
.course-chat-head strong { display: block; color: var(--text); }
.course-chat-head small { display: block; color: var(--text-muted); margin-top: 2px; }
.course-chat-head-actions { display: flex; align-items: center; gap: 8px; }
.course-chat-expand {
  min-width: 36px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
  font-size: 17px;
  font-weight: 800;
  cursor: pointer;
}
.course-chat-expand:hover { border-color: var(--gold); color: #fff; }
.course-chat-close {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
.course-chat-log {
  min-height: 0;
  overflow: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.course-chat-msg {
  max-width: 92%;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
.course-chat-avatar {
  width: 30px; height: 30px; flex: 0 0 30px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.045);
}
.course-chat-bubble {
  min-width: 0;
  padding: 11px 13px;
  border-radius: 12px;
  border: 1px solid var(--border);
}
.course-chat-msg p,
.course-chat-msg li {
  margin: 0;
  color: var(--text);
  font-size: 14px;
  line-height: 1.45;
}
.course-chat-msg p + p { margin-top: 9px; }
.course-chat-msg ul { margin: 8px 0 0 18px; padding: 0; }
.course-chat-msg li { margin: 4px 0; }
.course-chat-msg h4 { margin: 2px 0 7px; color: var(--gold); font-family: var(--font-body); font-size: 14px; }
.course-chat-msg strong { color: #fff; }
.course-chat-msg code {
  padding: 1px 5px;
  border-radius: 5px;
  color: var(--gold);
  background: rgba(252,187,55,.10);
  font-size: .92em;
}
.course-chat-msg.assistant { align-self: flex-start; }
.course-chat-msg.assistant .course-chat-avatar { color: var(--gold); border-color: rgba(252,187,55,.28); background: rgba(252,187,55,.10); }
.course-chat-msg.assistant .course-chat-bubble { background: rgba(150,209,211,.08); border-color: rgba(150,209,211,.24); }
.course-chat-msg.user { align-self: flex-end; flex-direction: row-reverse; }
.course-chat-msg.user .course-chat-avatar { color: var(--teal); border-color: rgba(150,209,211,.30); background: rgba(150,209,211,.10); }
.course-chat-msg.user .course-chat-bubble { background: rgba(255,224,161,.10); border-color: rgba(252,187,55,.20); }
.course-chat-msg.thinking { min-width: 142px; }
/* Abgesetzte Kontingent-Hinweiskarte (HTTP 429) */
.course-chat-msg.quota .course-chat-avatar { color: var(--gold); border-color: rgba(252,187,55,.30); background: rgba(252,187,55,.12); }
.course-chat-msg.quota .course-chat-bubble {
  background: rgba(252,187,55,.08);
  border-color: rgba(252,187,55,.32);
  border-left: 3px solid var(--gold);
}
.typing-dots { display: inline-flex; align-items: center; gap: 4px; margin-left: 4px; }
.typing-dots i {
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: var(--gold);
  opacity: .35;
  animation: typingPulse 1s infinite ease-in-out;
}
.typing-dots i:nth-child(2) { animation-delay: .16s; }
.typing-dots i:nth-child(3) { animation-delay: .32s; }
@keyframes typingPulse {
  0%, 80%, 100% { transform: translateY(0); opacity: .35; }
  40% { transform: translateY(-4px); opacity: 1; }
}
.course-chat-form {
  display: block;
  padding: 12px;
  border-top: 1px solid var(--border);
}
.course-chat-input-wrap {
  position: relative;
  min-width: 0;
}
.course-chat-form textarea {
  width: 100%;
  min-height: 44px;
  max-height: 130px;
  resize: vertical;
  border-radius: 12px;
  border: 1px solid rgba(190,221,255,.24);
  /* Dunkles Marineblau wie die Seitenleiste — sonst ist das Feld heller (helle Schrift
     auf hellblauem Grund schlecht lesbar). Gleicher Ton wie .sidebar-Basis. */
  background: rgba(5, 20, 48, .94);
  color: #fff;
  padding: 11px 86px 11px 13px;
  font: inherit;
  font-size: 14px;
  display: block;
}
.course-chat-form textarea::placeholder { color: rgba(227,246,246,.62); }
.course-chat-form textarea:focus-visible { outline: 2px solid rgba(150,209,211,.75); border-color: rgba(150,209,211,.72); }
.course-chat-form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  border: 0;
  border-radius: 999px;
  padding: 0;
  background: var(--gold);
  color: var(--on-accent);
  font-weight: 800;
  cursor: pointer;
}
.course-chat-send span[aria-hidden="true"] { font-size: 15px; line-height: 1; }
.course-chat-form .course-chat-record {
  position: absolute;
  right: 45px;
  bottom: 7px;
  width: 32px;
  height: 32px;
  min-height: 32px;
  min-width: 32px;
  padding: 0;
  border-radius: 999px;
  background: rgba(0, 23, 23, .72);
  color: var(--text);
  border: 1px solid var(--border);
  font-size: 10px;
  line-height: 1;
  box-shadow: none;
}
.course-chat-form .course-chat-send {
  position: absolute;
  right: 7px;
  bottom: 7px;
  width: 32px;
  height: 32px;
  min-width: 32px;
  min-height: 32px;
  box-shadow: 0 0 0 3px rgba(252,187,55,.10);
}
.course-chat-form .course-chat-record:hover {
  border-color: var(--gold);
  color: #fff;
}
.course-chat-form .course-chat-record svg {
  width: 17px; height: 17px;
  display: block; margin: 0 auto;
  fill: none; stroke: currentColor; stroke-width: 2;
  stroke-linecap: round; stroke-linejoin: round;
}
.course-chat-form .course-chat-record.recording {
  background: var(--orange);
  color: var(--on-accent);
  border-color: transparent;
  animation: micRecPulse 1.1s infinite ease-in-out;
}
/* Mikrofon blinkt waehrend der Aufnahme: man sieht, dass man reinsprechen kann. */
.course-chat-form .course-chat-record.recording svg {
  animation: micBlink 1s infinite ease-in-out;
}
@keyframes micBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: .2; }
}
@keyframes micRecPulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(255,181,157,.18); }
  50% { box-shadow: 0 0 0 8px rgba(255,181,157,.05); }
}
.course-chat-form.transcribing .course-chat-record {
  cursor: progress;
  opacity: .75;
}
.course-chat-form .course-chat-send.stop {
  min-width: 32px;
  background: var(--orange);
  color: var(--on-accent);
}
.course-chat-form.busy .course-chat-record { opacity: .55; cursor: not-allowed; }
.course-chat-form.busy .course-chat-send { cursor: pointer; }
@keyframes micPulse {
  0%, 100% { transform: scale(.8); opacity: .65; }
  50% { transform: scale(1.15); opacity: 1; }
}
.course-chat-note {
  margin: 0;
  padding: 0 14px 14px;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.35;
}

@media (max-width: 900px) {
  .step { min-height: 164px; }
  .cards { grid-template-columns: 1fr; }
  .notebook-panel { grid-template-columns: 1fr; padding: 22px; }
  .notebook-copy h2 { text-align: center; }
  .notebook-copy p { text-align: center; }
  .notebook-video-placeholder { margin-left: auto; margin-right: auto; }
  .notebook-features, .notebook-actions { justify-content: center; }
  /* Kopf-Navigation bleibt mobil bedienbar: nur das "Start"-Aufklappmenü
     (enthält Module + alte Einträge). Die Inline-Modul-Pills haben oben keinen
     Platz und werden ausgeblendet — die Module stehen dafür IM Menü. */
  .topnav { display: flex; gap: 8px; margin-left: 4px; flex: 0 0 auto; }
  .topnav-mods { display: none; }
  .topnav-menu { flex: 0 0 auto; }
  .topnav-menu > summary { font-size: 14px; }
  .topnav-dropdown { left: 0; max-height: 70vh; overflow-y: auto; }
  .menu-toggle { display: inline-block; }
  .sidebar {
    position: fixed; left: 0; top: var(--topbar-h); z-index: 40;
    transform: translateX(-100%); transition: transform .25s;
    width: 86%; max-width: 320px;
    background:
      linear-gradient(180deg, rgba(14, 42, 84, .86), rgba(5, 20, 48, .96)),
      var(--course-bg-image) center / cover no-repeat,
      rgba(5, 20, 48, .98);
  }
  .sidebar.open { transform: translateX(0); }
  .content .wrap#modulinhalt { height: calc(100dvh - var(--topbar-h)); padding: 8px; }
  .chapter-player { border-radius: 0; border-left: 0; border-right: 0; }
  .chapter-header { display: block; padding: 13px 14px 10px; }
  .chapter-header-tools { margin-top: 12px; justify-items: stretch; min-width: 0; }
  .chapter-notebook-btn { width: 100%; }
  .chapter-header .progress-row { margin-top: 12px; min-width: 0; }
  .chapter-scroll { padding: 14px 14px 72px; }
  .chapter-footer {
    position: sticky; bottom: 0;
    grid-template-columns: 1fr;
    padding: 8px; gap: 7px;
  }
  .chapter-done { grid-column: auto; justify-self: center; }
  .chapter-footer-nav { grid-column: auto; order: -1; }
  .topprogress .label { display: none; }
  .course-chat {
    top: var(--topbar-h);
    bottom: 0;
    transform: translateX(calc(100% - 48px));
  }
  body.course-chat-expanded .course-chat { width: calc(100vw - 8px); }
  .course-chat-box { border-radius: 0; }
  .course-chat-tab { bottom: 132px; width: 48px; }
}

@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .step { min-height: auto; }
  .hero-course-cta { width: 100%; }
}

/* ============================================================
   PROJEKT-WERKSTATT (Modul 08) — additiv, bestehende Tokens
   ============================================================ */

/* Schwierigkeit / Meta-Badges */
.wk-stars { display: inline-flex; gap: 2px; }
.wk-star { color: var(--border-strong); font-size: 14px; line-height: 1; }
.wk-star.on { color: var(--gold); }
.wk-meta-item { display: inline-flex; align-items: center; gap: 4px; font-size: 12.5px;
  color: var(--text-muted); background: rgba(150,209,211,.10); border: 1px solid var(--border);
  padding: 3px 10px; border-radius: 999px; }

/* (B) Projekt-Übersicht im Einführungskapitel */
.wk-overview { margin-top: 8px; }
.wk-card-grid { display: grid; gap: 14px; margin-top: 14px; }
.wk-card { padding: 0; overflow: hidden; }
.wk-card-open { display: flex; flex-direction: column; gap: 8px; align-items: flex-start;
  width: 100%; text-align: left; background: none; border: 0; color: inherit; cursor: pointer;
  font: inherit; padding: 18px 20px 14px; }
.wk-card-open:hover .wk-card-titel { color: var(--gold); }
.wk-card-nr { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--teal); font-weight: 700; }
.wk-card-titel { font-family: var(--font-head); font-size: 21px; color: var(--text); line-height: 1.2; transition: color .15s; }
.wk-card-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.wk-card-summary { font-size: 14px; color: var(--text-muted); }
.wk-card-mehr { margin: 0 20px 16px; }
.wk-card-mehr p { color: var(--text-muted); }
.wk-card-go { margin-top: 6px; }
.wk-list { margin: 6px 0 2px; padding-left: 20px; }
.wk-list li { font-size: 14px; color: var(--text-muted); margin: 4px 0; }

/* (C) Projektseite — Steckbrief-Kopf */
.chapter-projekt .chapter-scroll { padding-bottom: 40px; }
.wk-steckbrief { padding: 20px 22px; margin: 4px 0 18px; }
.wk-badges { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.wk-steckbrief-details { margin-top: 12px; display: grid; gap: 4px; }
.wk-steckbrief-details .mitnehmen { margin-top: 8px; }
.wk-steckbrief-details .mitnehmen:first-child { margin-top: 0; border-top: 0; padding-top: 0; }
.wk-intro { margin: 0 0 22px; }

/* Schritte */
.wk-steps { display: grid; gap: 22px; margin: 8px 0 22px; }
.wk-step { border-left: 3px solid rgba(150,209,211,.35); padding-left: 18px; }
/* Werkstatt als Schritt-Stepper (paginiert, ein Prompt pro Seite) */
.wk-stepwrap { display: block; }
.wk-stepwrap .wk-steps { margin: 0; }
.wk-overview > * + * { margin-top: 16px; }
.wk-probier-step { border-left: 3px solid rgba(255,181,157,.5); padding-left: 18px; }
.wk-probier-step .wk-probier-tag { display: inline-block; color: var(--orange); font-size: 12px; font-weight: 700; letter-spacing: .03em; margin: 0 0 6px; }
.wk-probier-step h3 { margin: 0 0 10px; }
.wk-step-head { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 12px; }
.wk-step-nr { flex: 0 0 auto; width: 34px; height: 34px; border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-size: 17px; color: var(--on-accent);
  background: linear-gradient(45deg, var(--teal-deep), var(--teal)); }
.wk-step-title h3 { margin: 0; font-size: 19px; color: var(--text); }
.wk-step-ziel { margin: 4px 0 0; font-size: 14.5px; color: var(--text-muted); }
.wk-step-erklaer { display: grid; gap: 4px; margin: 4px 0; }

/* Prompt-Karte */
.wk-prompt { padding: 14px 16px; margin: 12px 0; background: rgba(0,23,23,.55); }
.wk-prompt-text { margin: 0; white-space: pre-wrap; word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13.5px; line-height: 1.55; color: var(--text); }
.wk-var { color: var(--gold); background: rgba(252,187,55,.12);
  border-radius: 5px; padding: 0 3px; font-style: normal; }
code.wk-var { font-size: 12.5px; }
.wk-prompt-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; align-items: center; }
.wk-ask-ki { cursor: pointer; border: 0; }

/* Werkstatt-Übungsmaterial (Kopf-Bereich): Kopier-Zugang + ausklappbare Anzeige */
.wk-material { margin-top: 14px; border-top: 1px solid var(--border); padding-top: 12px; }
.wk-material-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.wk-material-copy { cursor: pointer; border: 0; }
.wk-material-body { margin-top: 10px; }

/* "Worauf du achtest" + Warnungs-Tag */
.wk-achten { font-size: 14.5px; color: var(--text); margin: 12px 0 0;
  background: rgba(150,209,211,.07); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 14px; }
.wk-achten-tag { display: inline-block; font-size: 11px; letter-spacing: .05em; text-transform: uppercase;
  color: var(--teal); background: rgba(150,209,211,.14); padding: 2px 8px; border-radius: 999px; margin-right: 8px; }
.wk-muster { display: block; color: var(--text-muted); }
.mitnehmen .tag.warn { color: var(--orange); background: rgba(255,181,157,.16); }
.wk-warn-details > summary { color: var(--orange); }
.wk-hinweis { margin: 12px 0 0; border-color: rgba(150,209,211,.30); border-left-color: var(--teal);
  background: rgba(150,209,211,.06); }
.wk-hinweis .ico { color: var(--teal); }

/* Anpass-Hinweis */
.wk-anpass { margin: 18px 0; }
.wk-anpass-vars { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px !important; }

/* "Probier den Unterschied" — Warnstil, zugeklappt */
.wk-probier { margin: 18px 0; border: 1px solid rgba(255,181,157,.34); border-left: 4px solid var(--orange);
  background: rgba(255,181,157,.05); border-radius: var(--radius); }
.wk-probier > summary { list-style: none; cursor: pointer; display: flex; flex-wrap: wrap; align-items: center;
  gap: 10px; padding: 16px 18px; color: var(--text); font-weight: 700; font-size: 15px; }
.wk-probier > summary::-webkit-details-marker { display: none; }
.wk-probier-tag { font-size: 11px; letter-spacing: .05em; text-transform: uppercase;
  color: var(--orange); background: rgba(255,181,157,.16); padding: 3px 10px; border-radius: 999px; }
.wk-probier-body { padding: 0 18px 18px; }
.wk-probier-body .lesson { padding: 0; background: none; border: 0; box-shadow: none; margin-bottom: 12px; }

/* Transfer / Reflexion */
.wk-transfer { padding: 20px 22px; margin: 22px 0 8px; }
.wk-transfer .lesson { padding: 0; background: none; border: 0; box-shadow: none; }
.wk-transfer-frage { margin-top: 14px; padding: 14px 16px; border-radius: var(--radius-sm);
  border: 1px solid rgba(252,187,55,.30); border-left: 4px solid var(--gold); background: rgba(252,187,55,.06); }
.wk-transfer-tag { display: inline-block; font-size: 11px; letter-spacing: .05em; text-transform: uppercase;
  color: var(--gold); font-weight: 700; margin-bottom: 6px; }
.wk-transfer-frage p { margin: 0; font-size: 16px; color: var(--text); }

@media (max-width: 720px) {
  .wk-step { padding-left: 14px; }
  .wk-prompt-actions { flex-direction: column; align-items: stretch; }
  .wk-prompt-actions .btn-coach, .wk-prompt-actions .btn-copy { justify-content: center; text-align: center; }
}

/* ============================================================
   SCROLL-MODUS — additiv, nur für Projektseiten + Werkstatt-Intro
   (Body-Klasse .course-scroll wird in app.js renderChapter() gesetzt).
   Ziel: Aktionsfenster kleiner, Hauptfenster scrollbar (Stream + darunter
   die Projekt-Übersicht erreichbar), Seitenleiste unabhängig scrollbar.
   Normale Lese-/Fragen-Kapitel sind NICHT betroffen (keine Klasse gesetzt).
   ============================================================ */
/* overflow:visible (nicht auto) -> die normale Dokument-/Viewport-Scrollbar
   greift; auto auf body würde einen geklammerten, kürzeren Innen-Scroll erzeugen. */
body.course-page.course-scroll { overflow: visible; }
/* Layoutkette aus dem Vollhöhen-Lock lösen, damit die SEITE scrollt. */
body.course-page.course-scroll .layout {
  height: auto; min-height: calc(100dvh - var(--topbar-h)); overflow: visible;
}
body.course-page.course-scroll .content { height: auto; overflow: visible; }
body.course-page.course-scroll .content .wrap#modulinhalt { height: auto; }
/* Aktionsfenster wächst mit dem Inhalt statt feste Resthöhe zu beanspruchen.
   grid-template-rows von "auto 1fr auto" auf reine auto-Zeilen, damit die
   mittlere Zeile (.chapter-scroll) nicht künstlich gestreckt wird. */
body.course-page.course-scroll .chapter-player {
  height: auto; max-height: none; overflow: visible;
  grid-template-rows: auto auto auto;
}
/* Innerer Scroll entfällt -> Stream + Übersichtsboxen fließen in den Seiten-Scroll. */
body.course-page.course-scroll .chapter-scroll {
  overflow: visible; min-height: 0;
  /* Platz für den unten klebenden Footer (v.a. mobil). */
  padding-bottom: 24px;
}
/* Aktionsfenster KLEINER in der Relation: Lese-/Stream-Bereich begrenzen,
   damit der Stream nicht die ganze Höhe einnimmt und die Übersicht sichtbar wird. */
body.course-page.course-scroll .lesson-stream {
  max-height: calc(100dvh - var(--topbar-h) - 320px);
  min-height: 200px; overflow: auto;
}
/* Seitenleiste unabhängig scrollbar halten, während die Seite scrollt.
   Nur Desktop: auf Mobil bleibt die Sidebar das fixierte Off-Canvas-Menü. */
@media (min-width: 901px) {
  body.course-page.course-scroll .sidebar {
    position: sticky; top: var(--topbar-h); align-self: flex-start;
    height: auto; max-height: calc(100dvh - var(--topbar-h)); overflow-y: auto;
  }
}
@media (max-width: 900px) {
  body.course-page.course-scroll .content .wrap#modulinhalt { height: auto; }
  /* Auf Mobil keine künstliche Stream-Höhe — die ganze Seite scrollt ohnehin. */
  body.course-page.course-scroll .lesson-stream { max-height: none; overflow: visible; }
}

/* ============================================================
   Sidebar: Modulname (-> Eröffnungsseite) vs. Pfeil (-> Kapitel auf/zu)
   Löst das alte <details>/<summary>-Verhalten ab (zwei klare Klickziele).
============================================================ */
.navmod-head { display: flex; align-items: stretch; gap: 2px; }
.navmod-name {
  flex: 1 1 auto; text-align: left; background: none; border: 0; cursor: pointer;
  color: var(--text); font: inherit; font-weight: 600; font-size: 14px;
  padding: 8px 8px 8px 10px; border-radius: 8px; line-height: 1.3;
}
.navmod-name:hover { background: rgba(190,221,255,.10); }
.navmod-name.active-mod { background: rgba(150,209,211,0.16); color: var(--teal); }
.navmod-toggle {
  flex: 0 0 auto; width: 36px; background: none; border: 0; cursor: pointer;
  color: var(--text-muted); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
}
.navmod-toggle:hover { background: rgba(190,221,255,.10); color: var(--text); }
.navmod-toggle .chev { font-size: 12px; transition: transform .2s; display: inline-block; }
.navmod.open .navmod-toggle .chev { transform: rotate(90deg); }
.navmod .blocks { display: none; }
.navmod.open .blocks { display: block; }

/* ============================================================
   Modul-Eröffnungsseite (Vorstellungsseite)
============================================================ */
.modul-intro { max-width: 980px; margin: 0 auto; padding: 0 0 60px; }
.modul-intro-head {
  position: relative; overflow: hidden; border-radius: var(--radius);
  margin: 22px 0 18px; padding: 34px 30px; min-height: 200px;
  background-size: cover; background-position: center;
}
.modul-intro-head::after { content:""; position:absolute; inset:0; z-index:1;
  background: linear-gradient(180deg, rgba(8,16,28,.30), rgba(8,16,28,.80)); }
.modul-intro-head-inner { position: relative; z-index: 2; }
.modul-intro-head h1 { font-size: clamp(26px,4vw,40px); color:#fff; margin: 8px 0 0; text-shadow: 0 2px 12px rgba(0,0,0,.5); }
.modul-intro-head .chapter-kicker { color:#cfe3ff; }
.modul-intro-meta { color:#eef; margin: 8px 0 0; font-size: 14px; text-shadow: 0 1px 6px rgba(0,0,0,.5); }
.modul-intro-start { margin-top: 18px; font-size: 16px; padding: 12px 22px; }
.modul-intro-body { display: flex; flex-direction: column; gap: 18px; }
.modul-intro-text { font-size: 16px; }
.video-frame video { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; object-fit: contain; background:#000; }
.video-frame img.intro-media-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.intro-video-cap { color: var(--text-muted); font-size: 13px; margin: 8px 2px 0; }
.intro-video-ph .video-frame { background: linear-gradient(135deg, #1a2740, #0e1726); display: flex; align-items: center; justify-content: center; }
.intro-video-ph-inner { display: flex; flex-direction: column; align-items: center; gap: 10px; color: #9fb6d6; font-size: 14px; }
.intro-video-ph-icon { font-size: 30px; width: 64px; height: 64px; border-radius: 50%;
  display:flex; align-items:center; justify-content:center;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18); }

/* Kapitelliste auf der Eröffnungsseite (leichte Karten, aktive Links) */
.mi-kapitel-titel { font-size: 18px; margin: 8px 0 12px; }
.mi-card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); gap: 12px; }
.mi-card { padding: 4px; display: flex; flex-direction: column; position: relative; }
.mi-card-open {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  display: flex; flex-direction: column; gap: 4px; padding: 12px 12px 10px; border-radius: 10px; color: var(--text);
}
.mi-card-open:hover { background: rgba(190,221,255,.08); }
.mi-card-nr { color: var(--text); font-size: 12px; font-weight: 700; letter-spacing: .03em; }
.mi-card-titel { font-weight: 600; font-size: 15px; line-height: 1.3; }
.mi-card-metas { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 2px; }
.mi-card-meta { color: var(--text-muted); font-size: 12px; }
.mi-card-mehr { margin: 0 8px 8px; }
/* Kurzüberblick lesbarer (weiß statt Teal-Grün) + Akkordeon nur mobil, Desktop = Hover-Popover */
.mi-card-mehr > summary { color: var(--text); }
.mi-card-mehr > summary .tag { color: var(--text); background: rgba(150,209,211,.20); }
.mi-card-mehr p { color: var(--text); }
.mi-card-pop { display: none; }
@media (hover: hover) and (pointer: fine) {
  .mi-card-mehr { display: none; }                          /* kein Tap-Akkordeon am Desktop */
  .mi-card:hover, .mi-card:focus-within { z-index: 5; }     /* Popover über Nachbarkarten */
  .mi-card-pop {
    display: block; position: absolute; left: 8px; right: 8px; top: calc(100% - 6px); z-index: 40;
    padding: 12px 14px; border-radius: var(--radius-sm);
    background: var(--surface-3); border: 1px solid var(--border-strong);
    box-shadow: 0 14px 34px rgba(0,0,0,.5);
    opacity: 0; transform: translateY(-6px); pointer-events: none;   /* opacity statt visibility -> Text bleibt im A11y-Baum */
    transition: opacity .15s ease, transform .15s ease;
  }
  .mi-card:hover .mi-card-pop, .mi-card:focus-within .mi-card-pop {
    opacity: 1; transform: translateY(0); pointer-events: auto;
  }
  .mi-card-pop-tag { display: inline-block; font-size: 11px; letter-spacing: .05em; text-transform: uppercase;
    color: var(--text); background: rgba(150,209,211,.20); padding: 2px 8px; border-radius: 999px; margin-bottom: 6px; }
  .mi-card-pop p { margin: 0; font-size: 14px; color: var(--text); line-height: 1.5; }
}

/* Task F: Abschnitts-Indikator in der Kapitel-Fußzeile + etwas Luft zwischen Abschnitten */
.chapter-section-indicator { color: var(--text-muted); font-size: 12.5px; font-weight: 600; white-space: nowrap; padding: 0 4px; }
.lesson-stream h3 { margin-top: 1.4em; }
.lesson-stream h3:first-child { margin-top: .2em; }
.lesson-stream h4 { margin-top: 1.05em; }
