/* ==========================================================================
   V-SeMo – Design System
   ========================================================================== */

:root {
  /* Farben */
  --space-900: #070a14;
  --space-800: #0b0f1f;
  --space-700: #111730;
  --space-600: #1a2244;
  --space-500: #232d57;
  --ink: #1b2030;
  --ink-soft: #4a5165;
  --paper: #f5f7fc;
  --card: #ffffff;
  --line: #e3e7f2;
  --line-dark: rgba(255, 255, 255, 0.1);
  --accent: #4f8cff;
  --accent-deep: #2f6bea;
  --accent-soft: rgba(79, 140, 255, 0.14);
  --gold: #f0b24a;
  --green: #2e9e5b;
  --green-soft: #e3f5ea;
  --red: #d6493f;
  --red-soft: #fdebe9;
  --text-on-dark: #dfe5f4;
  --muted-on-dark: #9aa5c4;

  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 10px 30px rgba(10, 16, 40, 0.10);
  --shadow-lift: 0 18px 44px rgba(10, 16, 40, 0.18);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --max: 1120px;
  --max-text: 760px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--text-on-dark);
  background: var(--space-800);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 0.6em;
  font-weight: 750;
}

h1 { font-size: clamp(1.9rem, 4.2vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: min(var(--max), 100% - 2.5rem);
  margin-inline: auto;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.9rem;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.68rem 1.35rem;
  border-radius: 999px;
  border: 0;
  font: inherit;
  font-weight: 650;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none !important;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff;
  box-shadow: 0 6px 18px rgba(47, 107, 234, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(47, 107, 234, 0.45); }

.btn-ghost {
  background: transparent;
  color: var(--text-on-dark);
  border: 1px solid var(--line-dark);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.07); }

.btn-light {
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--line);
  box-shadow: 0 2px 8px rgba(10, 16, 40, 0.07);
}
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(7, 10, 20, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-dark);
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 66px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  font-size: 1.12rem;
  color: #fff !important;
  text-decoration: none !important;
  letter-spacing: -0.01em;
}
.brand img { width: 36px; height: auto; }
.brand span small { color: var(--muted-on-dark); font-weight: 500; }

.main-nav {
  margin-left: auto;
  display: flex;
  gap: 0.35rem;
}

.main-nav a {
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  color: var(--muted-on-dark);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none !important;
  transition: color 0.15s, background 0.15s;
}
.main-nav a:hover { color: #fff; background: rgba(255, 255, 255, 0.07); }
.main-nav a.is-active { color: #fff; background: rgba(79, 140, 255, 0.22); }

.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: 1px solid var(--line-dark);
  border-radius: 9px;
  padding: 0.45rem 0.6rem;
  color: #fff;
  cursor: pointer;
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 0.8rem 1.25rem 1.1rem;
    background: rgba(7, 10, 20, 0.97);
    border-bottom: 1px solid var(--line-dark);
    display: none;
  }
  .main-nav.is-open { display: flex; }
}

/* --------------------------------------------------------------------------
   Hero (Startseite)
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 9vw, 7.5rem) 0 clamp(3.5rem, 7vw, 6rem);
  background:
    radial-gradient(1100px 500px at 75% -10%, rgba(79, 140, 255, 0.22), transparent 60%),
    radial-gradient(800px 420px at 12% 110%, rgba(240, 178, 74, 0.10), transparent 60%),
    var(--space-900);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 28%, rgba(255,255,255,0.85), transparent 100%),
    radial-gradient(1px 1px at 26% 64%, rgba(255,255,255,0.55), transparent 100%),
    radial-gradient(1.7px 1.7px at 38% 18%, rgba(255,255,255,0.75), transparent 100%),
    radial-gradient(1px 1px at 47% 76%, rgba(255,255,255,0.45), transparent 100%),
    radial-gradient(1.4px 1.4px at 58% 38%, rgba(255,255,255,0.7), transparent 100%),
    radial-gradient(1px 1px at 66% 82%, rgba(255,255,255,0.5), transparent 100%),
    radial-gradient(1.8px 1.8px at 74% 14%, rgba(255,255,255,0.8), transparent 100%),
    radial-gradient(1px 1px at 84% 56%, rgba(255,255,255,0.55), transparent 100%),
    radial-gradient(1.3px 1.3px at 93% 30%, rgba(255,255,255,0.7), transparent 100%),
    radial-gradient(1px 1px at 7% 84%, rgba(255,255,255,0.5), transparent 100%);
  pointer-events: none;
}

.hero .container { position: relative; }

.hero h1 {
  max-width: 17ch;
  color: #fff;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, #79a6ff, #f0b24a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .lead {
  max-width: 56ch;
  font-size: 1.12rem;
  color: var(--muted-on-dark);
  margin-bottom: 2rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }

/* --------------------------------------------------------------------------
   Dunkle Sektionen (Startseite, Übersichten)
   -------------------------------------------------------------------------- */

.section { padding: clamp(3rem, 7vw, 5.5rem) 0; }
.section-alt { background: var(--space-700); }

.section-head { max-width: 640px; margin-bottom: 2.4rem; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { color: #fff; }
.section-head p { color: var(--muted-on-dark); }

.split {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: clamp(1.6rem, 4vw, 3.5rem);
  align-items: center;
}
.split.reverse { grid-template-columns: 1fr 280px; }
.split h2 { color: #fff; }
.split p { color: var(--muted-on-dark); }
.split figure { margin: 0; }
.split img { margin-inline: auto; }

@media (max-width: 820px) {
  .split, .split.reverse { grid-template-columns: 1fr; }
  .split.reverse figure { order: -1; }
  .split img { max-width: 240px; }
}

.portrait {
  border-radius: var(--radius);
  filter: drop-shadow(0 14px 30px rgba(0, 0, 0, 0.45));
}

/* --------------------------------------------------------------------------
   Karten (Module / Applets)
   -------------------------------------------------------------------------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.4rem;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  color: var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }

.card-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--space-600);
}
.card-media img { width: 100%; height: 100%; object-fit: cover; }

.card-body {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.15rem 1.25rem 1.3rem;
  flex: 1;
}
.card-body h3 { margin: 0; font-size: 1.06rem; }
.card-body p { margin: 0; color: var(--ink-soft); font-size: 0.93rem; flex: 1; }
.card-body .btn { align-self: flex-start; margin-top: 0.5rem; }

.badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-deep);
}

/* Zitatbox für Literaturgrundlagen */
.citation {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--muted-on-dark);
  border-left: 3px solid var(--gold);
  padding: 0.2rem 0 0.2rem 1rem;
  max-width: 70ch;
  margin: 0 0 2rem;
  text-wrap: pretty;
}
.citation strong { color: var(--text-on-dark); }

/* --------------------------------------------------------------------------
   Kurs-Layout (Modulseiten)
   -------------------------------------------------------------------------- */

body.course { background: var(--paper); color: var(--ink); }

.course-layout {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: clamp(1.5rem, 3.5vw, 3.2rem);
  width: min(var(--max), 100% - 2.5rem);
  margin-inline: auto;
  padding: 2.4rem 0 4rem;
  align-items: start;
}

/* Seitenleiste */
.course-nav {
  position: sticky;
  top: 86px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 0.9rem 1.2rem;
  box-shadow: var(--shadow);
  max-height: calc(100vh - 110px);
  overflow-y: auto;
}

.course-nav-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0 0.7rem 0.7rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 0.55rem;
}

.course-nav ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.course-nav a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.7rem;
  border-radius: var(--radius-sm);
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 550;
  text-decoration: none !important;
  transition: background 0.13s, color 0.13s;
}
.course-nav a:hover { background: var(--accent-soft); color: var(--accent-deep); }
.course-nav .is-current a {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff;
}

.step-no {
  flex: none;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--line);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ink-soft);
}
.is-current .step-no { background: rgba(255, 255, 255, 0.2); border-color: transparent; color: #fff; }

.vsemo-mark {
  flex: none;
  width: 22px;
  height: 22px;
  object-fit: contain;
}

/* Umschalter (mobil) */
.toc-toggle {
  display: none;
  position: fixed;
  left: 1rem;
  bottom: 1rem;
  z-index: 70;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  border: 0;
  background: var(--space-700);
  color: #fff;
  font: inherit;
  font-weight: 650;
  font-size: 0.9rem;
  box-shadow: var(--shadow-lift);
  cursor: pointer;
}

@media (max-width: 920px) {
  .course-layout { grid-template-columns: 1fr; }
  .toc-toggle { display: inline-flex; }
  .course-nav {
    position: fixed;
    inset: auto 1rem 4.4rem 1rem;
    z-index: 69;
    max-height: 60vh;
    display: none;
  }
  .course-nav.is-open { display: block; }
}

/* Inhaltsbereich */
.course-main { max-width: var(--max-text); }

.step-meta {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin-bottom: 0.7rem;
}

.course-main h1 { color: var(--ink); font-size: clamp(1.7rem, 3.6vw, 2.3rem); margin-bottom: 1.1rem; }
.course-main h2 { color: var(--ink); font-size: 1.35rem; margin-top: 2.2rem; }

.course-main figure {
  margin: 1.6rem 0;
  text-align: center;
}
.course-main figure img {
  display: inline-block;
  border-radius: var(--radius-sm);
}
.course-main figure.framed img {
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 0.5rem;
}
.course-main figcaption {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 0.6rem;
}

.figure-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  margin: 1.6rem 0;
  align-items: center;
}
.figure-row figure { margin: 0; }
@media (max-width: 600px) { .figure-row { grid-template-columns: 1fr; } }

/* Video */
.video-frame {
  margin: 1.8rem 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
  box-shadow: var(--shadow-lift);
}
.video-frame video { display: block; width: 100%; height: auto; }

/* Iframe-Einbettungen (GeoGebra, Prezi) */
.embed-frame {
  margin: 1.8rem 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
  aspect-ratio: 16 / 9;
}
.embed-frame iframe { display: block; width: 100%; height: 100%; border: 0; }

/* GeoGebra-Applets haben eigene feste Seitenverhältnisse */
.embed-frame.ggb-2d { aspect-ratio: 7 / 5; }
.embed-frame.ggb-3d { aspect-ratio: 1 / 1; max-width: 560px; margin-inline: auto; }

/* Hinweis-/Merkkästen */
.callout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  margin: 1.8rem 0;
  padding: 1.05rem 1.2rem;
  border-radius: var(--radius-sm);
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow);
}
.callout.gold { border-left-color: var(--gold); }
.callout-icon { font-size: 1.25rem; line-height: 1.5; }
.callout-body p:last-child { margin-bottom: 0; }
.callout-title {
  display: block;
  font-weight: 750;
  margin-bottom: 0.25rem;
}

/* Aufgabenkasten */
.task {
  margin: 1.8rem 0;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.task-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.25rem;
  background: linear-gradient(135deg, var(--space-600), var(--space-700));
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
}
.task-body { padding: 1.15rem 1.25rem 1.3rem; }
.task-body > p:last-child { margin-bottom: 0; }

/* Aufklappbare Auflösung */
details.reveal {
  margin: 1.4rem 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow);
  overflow: hidden;
}
details.reveal summary {
  list-style: none;
  cursor: pointer;
  padding: 0.9rem 1.2rem;
  font-weight: 700;
  color: var(--accent-deep);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  user-select: none;
}
details.reveal summary::-webkit-details-marker { display: none; }
details.reveal summary::after {
  content: "";
  margin-left: auto;
  width: 9px;
  height: 9px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.18s ease;
}
details.reveal[open] summary::after { transform: rotate(225deg); }
details.reveal .reveal-body {
  padding: 0.2rem 1.2rem 1.2rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}
details.reveal .reveal-body > p:last-child { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   Quiz
   -------------------------------------------------------------------------- */

.quiz-options { display: flex; flex-direction: column; gap: 0.65rem; margin-top: 0.4rem; }

.quiz-option { border-radius: var(--radius-sm); }

.quiz-option-btn {
  width: 100%;
  text-align: left;
  font: inherit;
  font-weight: 550;
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.14s, background 0.14s;
}
.quiz-option-btn:hover { border-color: var(--accent); background: var(--accent-soft); }

.quiz-option.is-right .quiz-option-btn {
  border-color: var(--green);
  background: var(--green-soft);
}
.quiz-option.is-wrong .quiz-option-btn {
  border-color: var(--red);
  background: var(--red-soft);
}

.quiz-feedback {
  display: none;
  margin-top: 0.45rem;
  padding: 0.95rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}
.quiz-option.is-open .quiz-feedback { display: block; }
.quiz-option.is-right .quiz-feedback { background: var(--green-soft); border: 1px solid #bfe5cd; }
.quiz-option.is-wrong .quiz-feedback { background: var(--red-soft); border: 1px solid #f3c8c4; }
.quiz-feedback p:last-child { margin-bottom: 0; }
.quiz-feedback img { margin: 0.8rem auto; border-radius: var(--radius-sm); }

/* --------------------------------------------------------------------------
   V-SeMo-Startkachel
   -------------------------------------------------------------------------- */

.vsemo-launch {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1.3rem;
  align-items: center;
  margin: 1.8rem 0;
  padding: 1.4rem 1.5rem;
  border-radius: var(--radius);
  background:
    radial-gradient(500px 200px at 90% -30%, rgba(79, 140, 255, 0.35), transparent 70%),
    linear-gradient(135deg, var(--space-700), var(--space-800));
  color: var(--text-on-dark);
  box-shadow: var(--shadow-lift);
}
.vsemo-launch img { width: 110px; }
.vsemo-launch h3 { color: #fff; margin-bottom: 0.3rem; }
.vsemo-launch p { color: var(--muted-on-dark); font-size: 0.95rem; margin-bottom: 0.9rem; }
@media (max-width: 560px) {
  .vsemo-launch { grid-template-columns: 1fr; text-align: center; }
  .vsemo-launch img { margin-inline: auto; }
  .vsemo-launch .btn { margin-inline: auto; }
}

/* --------------------------------------------------------------------------
   Dunkle Kursseiten (Schwarzes Loch, Lichtablenkung)
   -------------------------------------------------------------------------- */

body.course-dark {
  background:
    radial-gradient(900px 460px at 85% -5%, rgba(79, 140, 255, 0.10), transparent 60%),
    var(--space-900);
  color: var(--text-on-dark);
}
body.course-dark .course-main h1,
body.course-dark .course-main h2 { color: #fff; }
body.course-dark .step-meta { color: #79a6ff; }

body.course-dark .course-nav {
  background: var(--space-700);
  border-color: var(--line-dark);
  box-shadow: none;
}
body.course-dark .course-nav-title { color: var(--muted-on-dark); border-color: var(--line-dark); }
body.course-dark .course-nav a { color: var(--muted-on-dark); }
body.course-dark .course-nav a:hover { background: rgba(79, 140, 255, 0.16); color: #fff; }
body.course-dark .course-nav .is-current a {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff;
}
body.course-dark .course-nav .is-current .step-no { background: rgba(255, 255, 255, 0.2); border-color: transparent; color: #fff; }
body.course-dark .step-no { background: var(--space-600); border-color: var(--line-dark); color: var(--muted-on-dark); }

body.course-dark .callout,
body.course-dark .task,
body.course-dark details.reveal {
  background: var(--space-700);
  border-color: var(--line-dark);
  box-shadow: none;
}
body.course-dark .callout { border-left-color: var(--accent); }
body.course-dark .callout.gold { border-left-color: var(--gold); }
body.course-dark .task-header { background: rgba(255, 255, 255, 0.06); }
body.course-dark details.reveal summary { color: #79a6ff; }
body.course-dark details.reveal .reveal-body { border-top-color: var(--line-dark); }
body.course-dark .quiz-option-btn {
  background: var(--space-600);
  border-color: var(--line-dark);
  color: var(--text-on-dark);
}
body.course-dark .quiz-option-btn:hover { border-color: var(--accent); background: rgba(79, 140, 255, 0.16); }
body.course-dark .quiz-option.is-right .quiz-feedback,
body.course-dark .quiz-option.is-wrong .quiz-feedback { color: var(--ink); }
body.course-dark figcaption { color: var(--muted-on-dark); }
body.course-dark .pager { border-top-color: var(--line-dark); }
body.course-dark .video-frame { box-shadow: 0 18px 44px rgba(0, 0, 0, 0.6); }

/* Bilder mit rein schwarzem Hintergrund: Schwarz verschmilzt mit dem Seitenhintergrund */
body.course-dark .img-blend {
  mix-blend-mode: screen;
  border-radius: 0;
}

/* Fotos (kein reines Schwarz) zusätzlich weich auslaufen lassen */
body.course-dark .img-fade {
  -webkit-mask-image: radial-gradient(ellipse 100% 100% at center, #000 35%, transparent 82%);
  mask-image: radial-gradient(ellipse 100% 100% at center, #000 35%, transparent 82%);
}
body.course-dark figure:has(> .img-blend) {
  margin-inline: calc(-1 * clamp(0rem, 3vw, 2rem));
}

/* --------------------------------------------------------------------------
   Vor/Zurück-Navigation
   -------------------------------------------------------------------------- */

.pager {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
}
.pager .spacer { flex: 1; }

/* Lernziele-Liste */
.goal-list {
  counter-reset: goal;
  list-style: none;
  margin: 1.6rem 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.goal-list li {
  counter-increment: goal;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  box-shadow: var(--shadow);
}
.goal-list li::before {
  content: counter(goal);
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff;
  font-size: 0.82rem;
  font-weight: 750;
  margin-top: 0.1rem;
}

/* Parallax-/Bildbanner */
.banner {
  position: relative;
  min-height: 320px;
  background-size: cover;
  background-position: center;
  border-radius: var(--radius);
  margin: 1.8rem 0;
  overflow: hidden;
}
.banner .credit {
  position: absolute;
  right: 0.7rem;
  bottom: 0.4rem;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.75);
  background: rgba(0, 0, 0, 0.45);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
  background: var(--space-900);
  border-top: 1px solid var(--line-dark);
  color: var(--muted-on-dark);
  padding: 2.6rem 0 2.2rem;
  font-size: 0.92rem;
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem 2.5rem;
  align-items: center;
}
.site-footer .foot-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #fff;
  font-weight: 700;
}
.site-footer .foot-brand img { width: 28px; }
.site-footer nav { display: flex; gap: 1.4rem; margin-left: auto; }
.site-footer a { color: var(--muted-on-dark); }
.site-footer a:hover { color: #fff; }
.site-footer .legal { width: 100%; font-size: 0.8rem; color: #5f6a8c; }

/* --------------------------------------------------------------------------
   Statische Textseiten (Impressum, Datenschutz)
   -------------------------------------------------------------------------- */

.prose-page {
  background: var(--card);
  color: var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(1.6rem, 4vw, 3rem);
  margin: 2.5rem auto 4rem;
  max-width: 820px;
}
.prose-page h1, .prose-page h2, .prose-page h3, .prose-page h4 { color: var(--ink); }
.prose-page h2 { margin-top: 2rem; font-size: 1.35rem; }
.prose-page h3 { margin-top: 1.5rem; font-size: 1.1rem; }