/* =====================================================================
   Lernplattform – Designsystem
   Farben als Tokens; dunkler Modus folgt dem System oder dem Schalter.
   ===================================================================== */
:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #f1f3f5;
  --surface-3: #e8ebef;
  --border: #e2e5e9;
  --border-strong: #cdd2d8;
  --text: #1a1e23;
  --text-2: #434a53;
  --muted: #687079;
  --primary: #3b5bdb;
  --primary-hover: #2f4bc0;
  --primary-soft: #edf0fd;
  --primary-text: #ffffff;
  --ok: #2b8a3e;
  --ok-soft: #e8f6eb;
  --fail: #c92a2a;
  --fail-soft: #fdeceb;
  --warn: #a85700;
  --warn-soft: #fff3e0;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .06);
  --shadow-lg: 0 12px 40px rgba(16, 24, 40, .18);
  --term-bg: #0d1117;
  --term-bar: #161b22;
  --term-border: #262c36;
  --radius: 12px;
  --radius-sm: 8px;
  --topbar-h: 60px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1115; --surface: #161a20; --surface-2: #1c2128; --surface-3: #252b33;
    --border: #282e36; --border-strong: #3a414b;
    --text: #e6e9ed; --text-2: #c3c9d1; --muted: #8f98a3;
    --primary: #7d95ff; --primary-hover: #97aaff; --primary-soft: #1d2440; --primary-text: #0e1115;
    --ok: #5fc97c; --ok-soft: #14281b; --fail: #ff7a7a; --fail-soft: #331a1c; --warn: #ffb35c; --warn-soft: #33260f;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4); --shadow: 0 1px 2px rgba(0, 0, 0, .35), 0 4px 16px rgba(0, 0, 0, .3);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, .55);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1115; --surface: #161a20; --surface-2: #1c2128; --surface-3: #252b33;
  --border: #282e36; --border-strong: #3a414b;
  --text: #e6e9ed; --text-2: #c3c9d1; --muted: #8f98a3;
  --primary: #7d95ff; --primary-hover: #97aaff; --primary-soft: #1d2440; --primary-text: #0e1115;
  --ok: #5fc97c; --ok-soft: #14281b; --fail: #ff7a7a; --fail-soft: #331a1c; --warn: #ffb35c; --warn-soft: #33260f;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4); --shadow: 0 1px 2px rgba(0, 0, 0, .35), 0 4px 16px rgba(0, 0, 0, .3);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, .55);
  color-scheme: dark;
}

/* ---------------------------------------------------------------- Basis */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.55 var(--font); -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }
h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -.01em; margin: 0 0 .5em; }
h1 { font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.1rem); font-weight: 750; }
h2 { font-size: 1.35rem; font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 650; }
p { margin: 0 0 1em; }
code, kbd, pre { font-family: var(--mono); }
img { max-width: 100%; height: auto; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.mono { font-family: var(--mono); }
.icon { width: 1.15em; height: 1.15em; flex: none; vertical-align: -.2em; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

.only-dark { display: none; }
:root[data-theme="dark"] .only-dark { display: inline-flex; }
:root[data-theme="dark"] .only-light { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .only-dark { display: inline-flex; }
  :root:not([data-theme="light"]) .only-light { display: none; }
}

.container { max-width: 1120px; margin: 0 auto; padding: 32px 24px 64px; }
.container-wide { max-width: 1320px; }
.container-narrow { max-width: 640px; }

/* ---------------------------------------------------------------- Kopfzeile */
.topbar {
  position: sticky; top: 0; z-index: 50; height: var(--topbar-h);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px); -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner { height: 100%; max-width: 1320px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; letter-spacing: -.01em; }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: grid; place-items: center; width: 32px; height: 32px; border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 55%, #12b886));
  color: #fff;
}
.brand-mark .icon { width: 18px; height: 18px; }
.mainnav { display: flex; gap: 4px; }
.mainnav a { padding: 6px 12px; border-radius: 8px; color: var(--text-2); font-weight: 550; font-size: .95rem; }
.mainnav a:hover { background: var(--surface-2); text-decoration: none; color: var(--text); }
.mainnav a.active { color: var(--primary); background: var(--primary-soft); }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.icon-btn {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 9px; border: 1px solid transparent;
  background: transparent; color: var(--text-2); cursor: pointer;
}
.icon-btn:hover { background: var(--surface-2); color: var(--text); }

.usermenu { position: relative; }
.usermenu summary { list-style: none; display: flex; align-items: center; gap: 10px; cursor: pointer; padding: 4px 8px 4px 4px; border-radius: 999px; }
.usermenu summary::-webkit-details-marker { display: none; }
.usermenu summary:hover { background: var(--surface-2); }
.usermenu-name { font-weight: 550; font-size: .95rem; max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.usermenu .menu {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 230px; padding: 6px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-lg);
}
.menu-head { display: flex; flex-direction: column; padding: 8px 10px 10px; border-bottom: 1px solid var(--border); margin-bottom: 6px; }
.menu-head .muted { font-size: .85rem; }
.menu a, .menu button {
  display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px 10px; border-radius: 8px; border: 0;
  background: none; color: var(--text); font: inherit; font-size: .95rem; cursor: pointer; text-align: left;
}
.menu a:hover, .menu button:hover { background: var(--surface-2); text-decoration: none; }
.menu form { margin: 0; }

.avatar {
  display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; flex: none;
  background: var(--primary-soft); color: var(--primary); font-weight: 700; font-size: .8rem; letter-spacing: .02em;
}
.avatar-sm { width: 34px; height: 34px; }
.avatar-lg { width: 56px; height: 56px; font-size: 1.1rem; }

/* ---------------------------------------------------------------- Meldungen */
.flash { max-width: 1320px; margin: 16px auto 0; padding: 0 24px; }
.flash-inner {
  display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface); box-shadow: var(--shadow-sm); font-weight: 550;
}
.flash-ok .flash-inner { border-color: color-mix(in srgb, var(--ok) 35%, transparent); background: var(--ok-soft); color: var(--ok); }
.flash-error .flash-inner { border-color: color-mix(in srgb, var(--fail) 35%, transparent); background: var(--fail-soft); color: var(--fail); }
.flash-info .flash-inner { background: var(--primary-soft); color: var(--primary); border-color: color-mix(in srgb, var(--primary) 30%, transparent); }

.alert { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: .95rem; }
.alert .icon { margin-top: 2px; }
.alert-error { background: var(--fail-soft); color: var(--fail); border: 1px solid color-mix(in srgb, var(--fail) 30%, transparent); }
.alert-block { display: block; }
.alert-title { display: flex; gap: 8px; align-items: center; font-weight: 650; margin-bottom: 8px; }
.error-list { margin: 0; padding-left: 20px; }
.error-list li { margin: 4px 0; }
.error-list code { white-space: pre-wrap; word-break: break-word; color: inherit; background: none; font-size: .85rem; }

.note-banner {
  display: flex; gap: 10px; align-items: flex-start; padding: 12px 16px; margin-bottom: 24px; border-radius: var(--radius-sm);
  background: var(--primary-soft); color: var(--text); border: 1px solid color-mix(in srgb, var(--primary) 25%, transparent);
}
.note-banner .icon { color: var(--primary); margin-top: 3px; }

/* ---------------------------------------------------------------- Bausteine */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.card-pad { padding: 24px; }
.card-title { display: flex; align-items: center; gap: 8px; font-size: 1.05rem; margin-bottom: 16px; }
.stack { display: flex; flex-direction: column; gap: 16px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 9px 16px; min-height: 40px;
  border-radius: 9px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text);
  font: inherit; font-weight: 600; font-size: .95rem; cursor: pointer; white-space: nowrap;
  transition: background .15s, border-color .15s, box-shadow .15s, transform .05s;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); box-shadow: 0 1px 2px rgba(0, 0, 0, .12); }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-danger { background: var(--fail); border-color: var(--fail); color: #fff; }
.btn-danger:hover { background: color-mix(in srgb, var(--fail) 85%, #000); }
.btn-ghost { border-color: transparent; background: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }
.btn-sm { min-height: 32px; padding: 5px 10px; font-size: .85rem; border-radius: 7px; }
.btn-lg { min-height: 48px; padding: 12px 22px; font-size: 1rem; }
.btn-block { width: 100%; }
.btn.is-loading { pointer-events: none; opacity: .8; }
.btn.is-loading::before {
  content: ""; width: 14px; height: 14px; border-radius: 50%; border: 2px solid currentColor; border-right-color: transparent;
  animation: spin .7s linear infinite;
}
.btn.is-loading .icon { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }

.tag {
  display: inline-flex; align-items: center; gap: 5px; padding: 2px 9px; border-radius: 999px; font-size: .78rem; font-weight: 650;
  background: var(--primary-soft); color: var(--primary); white-space: nowrap;
}
.tag .icon { width: 13px; height: 13px; }
.tag-soft { background: var(--surface-2); color: var(--text-2); }
.tag-ok { background: var(--ok-soft); color: var(--ok); }
.tag-warn { background: var(--warn-soft); color: var(--warn); }

.progress { display: block; height: 8px; background: var(--surface-3); border-radius: 999px; overflow: hidden; flex: 1; min-width: 60px; }
.progress-bar { display: block; height: 100%; background: linear-gradient(90deg, var(--primary), color-mix(in srgb, var(--primary) 60%, #12b886)); border-radius: inherit; transition: width .4s ease; }

.score { display: inline-block; white-space: nowrap; padding: 2px 8px; border-radius: 6px; font-weight: 700; font-size: .85rem; font-variant-numeric: tabular-nums; }
.score-ok { background: var(--ok-soft); color: var(--ok); }
.score-fail { background: var(--fail-soft); color: var(--fail); }

.page-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 28px; }
.page-head h1 { margin-bottom: 4px; }
.page-head p { margin: 0; }
.section-title { font-size: 1.1rem; margin: 36px 0 14px; }
.kicker {
  display: inline-flex; align-items: center; gap: 6px; font-size: .78rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .06em; color: var(--primary);
}
.kicker .icon { width: 15px; height: 15px; }

.stat-row { display: flex; gap: 12px; margin: 0; flex-wrap: wrap; }
.stat { margin: 0; }
.stat-row .stat { padding: 10px 16px; border-radius: var(--radius-sm); background: var(--surface); border: 1px solid var(--border); min-width: 120px; }
.stat dt { font-size: .78rem; color: var(--muted); font-weight: 600; }
.stat dd { margin: 0; font-size: 1.6rem; font-weight: 750; font-variant-numeric: tabular-nums; line-height: 1.2; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin: 0; }
.stat-grid .stat { padding: 18px 20px; display: flex; flex-direction: column; gap: 2px; }
.stat-grid .stat dd { font-size: 2rem; }
.stat-warn { border-color: color-mix(in srgb, var(--warn) 45%, transparent); }
.stat-warn dd { color: var(--warn); }

.empty { text-align: center; padding: 48px 24px; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.empty > .icon { width: 36px; height: 36px; color: var(--muted); margin-bottom: 6px; }
.empty .btn { margin-top: 10px; }

/* ---------------------------------------------------------------- Formulare */
.form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field > span { font-weight: 600; font-size: .9rem; }
.field small { font-size: .8rem; }
input[type="text"], input[type="password"], input[type="email"], select, textarea {
  width: 100%; padding: 10px 12px; min-height: 42px; border-radius: 9px; border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--text); font: inherit; font-size: 1rem;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 22%, transparent);
}
input:disabled { opacity: .85; }
.inline-form { margin: 8px 12px 12px; }

/* ---------------------------------------------------------------- Login */
.page-login { background:
  radial-gradient(1000px 500px at 10% -10%, color-mix(in srgb, var(--primary) 16%, transparent), transparent 60%),
  radial-gradient(800px 500px at 110% 110%, color-mix(in srgb, #12b886 14%, transparent), transparent 60%), var(--bg); }
.login-wrap { min-height: calc(100vh - var(--topbar-h)); display: grid; place-items: center; padding: 32px 16px; }
.login-card { width: 100%; max-width: 410px; padding: 32px; box-shadow: var(--shadow); }
.login-head { text-align: center; margin-bottom: 24px; }
.login-head h1 { font-size: 1.6rem; margin: 14px 0 6px; }
.login-head p { font-size: .95rem; margin: 0; }
.login-mark { display: inline-grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; color: #fff;
  background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 55%, #12b886)); box-shadow: var(--shadow); }
.login-mark .icon { width: 26px; height: 26px; }
.login-foot { text-align: center; font-size: .82rem; margin: 20px 0 0; }

/* ---------------------------------------------------------------- Startseite & Kurse */
.resume {
  display: grid; grid-template-columns: auto 1fr minmax(120px, 200px) auto; align-items: center; gap: 18px;
  padding: 18px 22px; color: var(--text); margin-bottom: 8px; transition: border-color .15s, box-shadow .15s;
}
.resume:hover { text-decoration: none; border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); box-shadow: var(--shadow); }
.resume-icon { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 12px; background: var(--primary-soft); color: var(--primary); }
.resume-text { display: flex; flex-direction: column; min-width: 0; }
.resume-text strong { font-size: 1.1rem; }
.resume-text .muted { font-size: .9rem; }
.resume-progress { display: flex; align-items: center; gap: 10px; }
.resume-go { color: var(--primary); }

.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.course-card { display: flex; flex-direction: column; gap: 10px; padding: 22px; color: var(--text); transition: transform .15s, box-shadow .15s, border-color .15s; }
.course-card:hover { text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--primary) 35%, var(--border)); }
.course-card h3 { font-size: 1.2rem; margin: 2px 0 0; }
.course-card p { margin: 0; font-size: .95rem; flex: 1; }
.course-card-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.course-card-meta { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .85rem; color: var(--muted); }
.course-card-meta span { display: inline-flex; align-items: center; gap: 5px; }
.course-card-progress { display: flex; align-items: center; gap: 10px; margin-top: 6px; }

.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; font-size: .88rem; color: var(--muted); margin-bottom: 18px; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--primary); }
.crumbs .icon { width: 14px; height: 14px; }
.crumbs span { color: var(--text-2); }

.course-hero { display: grid; grid-template-columns: 1fr 220px; gap: 32px; padding: 30px; }
.course-hero h1 { margin: 10px 0 12px; }
.course-hero .prose { color: var(--text-2); margin-bottom: 16px; }
.course-hero-side { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; text-align: center; }
.course-hero-side p { margin: 0; }
.ring {
  --p: 0; width: 132px; height: 132px; border-radius: 50%; display: grid; place-items: center;
  background: conic-gradient(var(--primary) calc(var(--p) * 1%), var(--surface-3) 0);
}
.ring > span { width: 108px; height: 108px; border-radius: 50%; background: var(--surface); display: flex; flex-direction: column; align-items: center; justify-content: center; }
.ring strong { font-size: 1.6rem; font-variant-numeric: tabular-nums; line-height: 1.1; }
.ring small { color: var(--muted); font-size: .8rem; }

.module-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.module-link {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 16px; padding: 16px 18px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}
a.module-link:hover { text-decoration: none; border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); box-shadow: var(--shadow); }
.module-status { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 11px; background: var(--surface-2); color: var(--text-2); }
.is-done .module-status { background: var(--ok-soft); color: var(--ok); }
.is-locked .module-link { opacity: .6; cursor: not-allowed; }
.type-lab.is-open .module-status, .type-quiz.is-open .module-status { background: var(--primary-soft); color: var(--primary); }
.module-info { display: flex; flex-direction: column; min-width: 0; }
.module-kicker { font-size: .78rem; font-weight: 650; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.module-title { font-weight: 650; font-size: 1.02rem; }
.module-desc { font-size: .9rem; color: var(--muted); }
.module-end { display: flex; align-items: center; gap: 12px; color: var(--muted); }

/* ---------------------------------------------------------------- Modulseiten */
.module-layout { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 36px; align-items: start; }
.module-side { position: sticky; top: calc(var(--topbar-h) + 20px); max-height: calc(100vh - var(--topbar-h) - 40px); overflow: auto; }
.side-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.side-head { list-style: none; padding: 16px 16px 14px; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 10px; cursor: default; }
.side-head::-webkit-details-marker { display: none; }
.side-title { font-weight: 700; }
.side-progress { display: flex; align-items: center; gap: 10px; }
.side-list { list-style: none; margin: 0; padding: 8px; }
.side-list a, .side-locked { display: flex; align-items: flex-start; gap: 10px; padding: 8px 10px; border-radius: 8px; color: var(--text-2); font-size: .92rem; line-height: 1.35; }
.side-list a:hover { background: var(--surface-2); text-decoration: none; color: var(--text); }
.side-locked { opacity: .55; }
.side-icon { display: inline-flex; color: var(--muted); margin-top: 1px; }
.side-list .is-done .side-icon { color: var(--ok); }
.side-list .is-current a { background: var(--primary-soft); color: var(--primary); font-weight: 650; }
.side-list .is-current .side-icon { color: var(--primary); }

.module-main { min-width: 0; max-width: 820px; }
.module-head { margin-bottom: 24px; }
.module-head h1 { margin: 8px 0 0; }
.module-actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 14px; margin: 32px 0 8px; padding-top: 24px; border-top: 1px solid var(--border); }
.module-actions form { margin: 0; }
.done-note { display: inline-flex; align-items: center; gap: 8px; color: var(--ok); font-weight: 600; margin-right: auto; }

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 28px; }
.pager-link {
  display: flex; align-items: center; gap: 12px; padding: 14px 16px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface); color: var(--text); font-weight: 600; min-width: 0;
}
.pager-link:hover { text-decoration: none; border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }
.pager-link span { display: flex; flex-direction: column; min-width: 0; }
.pager-link small { color: var(--muted); font-weight: 600; font-size: .78rem; }
.pager-next { justify-content: flex-end; text-align: right; grid-column: 2; }
.pager-link .icon { color: var(--muted); }

/* ---------------------------------------------------------------- Fließtext (Markdown) */
.prose { font-size: 1.02rem; line-height: 1.7; overflow-wrap: break-word; }
.prose > :first-child { margin-top: 0; }
.prose > :last-child { margin-bottom: 0; }
.prose h2 { font-size: 1.4rem; margin: 2em 0 .6em; }
.prose h3 { font-size: 1.15rem; margin: 1.6em 0 .5em; }
.prose h4 { font-size: 1rem; margin: 1.4em 0 .4em; }
.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 1em; }
.prose li { margin: .25em 0; }
.prose li > p { margin: 0 0 .4em; }
.prose strong { font-weight: 650; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 2em 0; }
.prose blockquote { margin: 1.2em 0; padding: .2em 1em; border-left: 3px solid var(--border-strong); color: var(--text-2); }
.prose :not(pre) > code {
  font-size: .86em; padding: .15em .4em; border-radius: 5px; background: var(--surface-2);
  border: 1px solid var(--border); color: var(--text); white-space: break-spaces;
}
.prose kbd { font-size: .82em; padding: .1em .45em; border-radius: 5px; border: 1px solid var(--border-strong); border-bottom-width: 2px; background: var(--surface); }
.prose pre, .solution-code {
  margin: 1.1em 0; padding: 14px 16px; border-radius: 10px; overflow-x: auto; font-size: .88rem; line-height: 1.55;
  background: var(--term-bg); color: #e6edf3; border: 1px solid var(--term-border);
}
.prose .hl { margin: 1.1em 0; border-radius: 10px; background: var(--term-bg) !important; }
.prose .hl pre { margin: 0; }
.prose table { display: block; width: max-content; max-width: 100%; overflow-x: auto; border-collapse: collapse; margin: 1.2em 0; font-size: .95rem; }
.prose th, .prose td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; vertical-align: top; }
.prose th { background: var(--surface-2); font-weight: 650; }
.prose td code { white-space: nowrap; }
.prose dl dt { font-weight: 650; margin-top: .8em; }
.prose dl dd { margin: .2em 0 0 1.2em; }
.prose img { border-radius: 10px; border: 1px solid var(--border); }

.prose .admonition {
  margin: 1.4em 0; padding: 14px 18px; border-radius: 10px; border: 1px solid var(--border);
  border-left: 4px solid var(--primary); background: var(--primary-soft);
}
.prose .admonition > :last-child { margin-bottom: 0; }
.prose .admonition-title { font-weight: 700; margin-bottom: .35em; color: var(--primary); }
.prose .admonition.tip, .prose .admonition.hint, .prose .admonition.success { border-left-color: var(--ok); background: var(--ok-soft); }
.prose .admonition.tip .admonition-title, .prose .admonition.hint .admonition-title, .prose .admonition.success .admonition-title { color: var(--ok); }
.prose .admonition.warning, .prose .admonition.caution, .prose .admonition.important { border-left-color: var(--warn); background: var(--warn-soft); }
.prose .admonition.warning .admonition-title, .prose .admonition.caution .admonition-title, .prose .admonition.important .admonition-title { color: var(--warn); }
.prose .admonition.danger, .prose .admonition.error { border-left-color: var(--fail); background: var(--fail-soft); }
.prose .admonition.danger .admonition-title, .prose .admonition.error .admonition-title { color: var(--fail); }
.prose .admonition.example { border-left-color: var(--border-strong); background: var(--surface-2); }
.prose .admonition.example .admonition-title { color: var(--text-2); }

/* ---------------------------------------------------------------- Quiz */
.quiz { display: flex; flex-direction: column; gap: 16px; margin-top: 24px; }
.question { padding: 22px 24px; }
.question fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.q-head { float: left; width: 100%; display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 0; margin-bottom: 10px; }
.q-head + * { clear: both; }
.q-num { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.q-hint { font-size: .78rem; font-weight: 650; color: var(--primary); background: var(--primary-soft); padding: 1px 8px; border-radius: 999px; }
.q-result { margin-left: auto; display: inline-flex; align-items: center; gap: 5px; font-weight: 700; font-size: .9rem; }
.q-ok { border-color: color-mix(in srgb, var(--ok) 45%, var(--border)); }
.q-ok .q-result { color: var(--ok); }
.q-fail { border-color: color-mix(in srgb, var(--fail) 45%, var(--border)); }
.q-fail .q-result { color: var(--fail); }
.q-text { margin-bottom: 14px; font-weight: 550; }
.options { display: flex; flex-direction: column; gap: 8px; }
.option {
  display: flex; align-items: flex-start; gap: 12px; padding: 11px 14px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); cursor: pointer; transition: border-color .12s, background .12s;
}
.option:hover { border-color: var(--border-strong); background: var(--surface-2); }
.option:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); }
.option input { margin: 4px 0 0; accent-color: var(--primary); width: 17px; height: 17px; flex: none; }
.option-text code { font-size: .9em; padding: .1em .35em; border-radius: 4px; background: var(--surface-2); border: 1px solid var(--border); }
fieldset:disabled .option { cursor: default; }
.option.opt-correct { border-color: var(--ok); background: var(--ok-soft); }
.option.opt-wrong { border-color: var(--fail); background: var(--fail-soft); }
.q-input { font-family: var(--mono); max-width: 520px; }
.q-solution { margin: 10px 0 0; font-size: .92rem; color: var(--text-2); }
.q-explain { display: flex; gap: 10px; margin-top: 16px; padding: 12px 14px; border-radius: 10px; background: var(--surface-2); font-size: .95rem; }
.q-explain > .icon { color: var(--warn); margin-top: 4px; }

.result-banner {
  display: flex; flex-wrap: wrap; align-items: center; gap: 16px; padding: 18px 20px; border-radius: var(--radius); margin-bottom: 24px;
  border: 1px solid var(--border);
}
.result-banner.is-ok { background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.result-banner.is-fail { background: var(--fail-soft); border-color: color-mix(in srgb, var(--fail) 35%, transparent); }
.result-icon { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 50%; background: var(--surface); flex: none; }
.is-ok .result-icon { color: var(--ok); }
.is-fail .result-icon { color: var(--fail); }
.result-text { display: flex; flex-direction: column; flex: 1; min-width: 220px; }
.result-text strong { font-size: 1.15rem; }
.result-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------------------------------------------------------------- Lab */
.page-lab { overflow: hidden; }
.lab-main { height: calc(100vh - var(--topbar-h)); height: calc(100dvh - var(--topbar-h)); }
.lab { display: grid; grid-template-columns: minmax(360px, 460px) minmax(0, 1fr); height: 100%; }
.lab-side { overflow-y: auto; padding: 24px 24px 40px; border-right: 1px solid var(--border); background: var(--bg); }
.lab-side .module-head { margin-bottom: 16px; }
.lab-side .module-head h1 { font-size: 1.55rem; }
.lab-intro { font-size: .97rem; }
.tasks-title { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 26px 0 10px; }
.tasks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.task { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; transition: border-color .2s, background .2s; }
.task-head { display: flex; align-items: flex-start; gap: 12px; }
.task-state {
  display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; flex: none; margin-top: -1px;
  background: var(--surface-2); color: var(--text-2); font-size: .8rem; font-weight: 700; border: 1px solid var(--border-strong);
}
.task-state .icon { width: 15px; height: 15px; }
.task-state .st-ok, .task-state .st-fail { display: none; }
.task.is-ok { border-color: color-mix(in srgb, var(--ok) 45%, var(--border)); }
.task.is-ok .task-state { background: var(--ok); border-color: var(--ok); color: #fff; }
.task.is-ok .st-num { display: none; }
.task.is-ok .st-ok { display: inline-flex; }
.task.is-fail { border-color: color-mix(in srgb, var(--fail) 40%, var(--border)); }
.task.is-fail .task-state { background: var(--fail-soft); border-color: var(--fail); color: var(--fail); }
.task.is-fail .st-num { display: none; }
.task.is-fail .st-fail { display: inline-flex; }
.task-title { flex: 1; font-weight: 650; line-height: 1.4; }
.task-title code { font-size: .88em; padding: .1em .35em; border-radius: 4px; background: var(--surface-2); border: 1px solid var(--border); }
.task-points { font-size: .78rem; color: var(--muted); font-weight: 650; white-space: nowrap; margin-top: 2px; }
.task-body { margin: 8px 0 0 38px; font-size: .94rem; color: var(--text-2); }
.task-feedback { margin: 10px 0 0 38px; padding: 8px 12px; border-radius: 8px; background: var(--fail-soft); color: var(--fail); font-size: .88rem; white-space: pre-wrap; }
.hint { margin: 10px 0 0 38px; font-size: .92rem; }
.hint summary { cursor: pointer; display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-weight: 600; list-style: none; }
.hint summary::-webkit-details-marker { display: none; }
.hint[open] summary { margin-bottom: 6px; }
.hint .prose { padding: 10px 12px; border-radius: 8px; background: var(--surface-2); font-size: .92rem; }
.hint-admin summary { color: var(--warn); }
.solution-code { margin: 0; font-size: .82rem; }

.tasks-note { margin: -4px 0 12px; }
.lab-check { margin-top: 18px; padding: 12px 14px; display: flex; flex-direction: column; gap: 10px; position: sticky; bottom: 12px; box-shadow: var(--shadow); }
.lab-check-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.lab-check-info { display: flex; flex-direction: column; flex: 1; min-width: 120px; line-height: 1.3; }
.lab-check-info strong { font-size: .95rem; }
.score-pill { font-size: 1.05rem; font-weight: 800; padding: 4px 10px; border-radius: 9px; font-variant-numeric: tabular-nums; }
.score-pill.is-ok { background: var(--ok-soft); color: var(--ok); }
.score-pill.is-fail { background: var(--fail-soft); color: var(--fail); }
.lab-message { font-size: .92rem; padding: 10px 12px; border-radius: 8px; }
.lab-message.is-ok { background: var(--ok-soft); color: var(--ok); font-weight: 600; }
.lab-message.is-fail { background: var(--surface-2); color: var(--text-2); }
.lab-message.is-error { background: var(--fail-soft); color: var(--fail); }
.lab-side .pager { grid-template-columns: 1fr; }
.lab-side .pager-next { grid-column: auto; }

.lab-term { display: flex; flex-direction: column; min-width: 0; min-height: 0; background: var(--term-bg); }
.lab-term.is-full { position: fixed; inset: 0; z-index: 200; }
.term-bar {
  display: flex; align-items: center; gap: 14px; height: 44px; padding: 0 12px 0 16px; flex: none;
  background: var(--term-bar); border-bottom: 1px solid var(--term-border); color: #c9d1d9; font-size: .85rem;
}
.term-dots { display: flex; gap: 6px; }
.term-dots i { width: 11px; height: 11px; border-radius: 50%; background: #3a404a; }
.term-dots i:first-child { background: #ff5f57; } .term-dots i:nth-child(2) { background: #febc2e; } .term-dots i:nth-child(3) { background: #28c840; }
.term-title { display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: .82rem; color: #8b949e; }
.term-status { display: inline-flex; align-items: center; gap: 6px; font-size: .78rem; font-weight: 600; color: #8b949e; }
.term-status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #6e7681; }
.term-status[data-state="connected"] { color: #3fb950; }
.term-status[data-state="connected"]::before { background: #3fb950; box-shadow: 0 0 0 3px rgba(63, 185, 80, .2); }
.term-status[data-state="busy"]::before { background: #d29922; animation: pulse 1s ease-in-out infinite; }
.term-status[data-state="error"] { color: #f85149; }
.term-status[data-state="error"]::before { background: #f85149; }
@keyframes pulse { 50% { opacity: .35; } }
.term-actions { margin-left: auto; display: flex; gap: 4px; }
.term-btn {
  display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 10px; border-radius: 7px; border: 1px solid transparent;
  background: transparent; color: #c9d1d9; font: inherit; font-size: .8rem; font-weight: 600; cursor: pointer;
}
.term-btn:hover:not(:disabled) { background: #21262d; border-color: #30363d; }
.term-btn:disabled { opacity: .4; cursor: not-allowed; }
.term-btn .icon { width: 15px; height: 15px; }
.term-btn .when-full { display: none; }
.is-full .term-btn .when-full { display: inline-flex; }
.is-full .term-btn .when-normal { display: none; }
.term-body { position: relative; flex: 1; min-height: 0; }
.terminal-host { position: absolute; inset: 0; padding: 10px 4px 6px 12px; }
.terminal-host .xterm { height: 100%; }
.terminal-host .xterm-viewport { scrollbar-width: thin; scrollbar-color: #30363d transparent; }
.term-overlay {
  position: absolute; inset: 0; display: grid; place-items: center; padding: 24px;
  background: radial-gradient(600px 300px at 50% 40%, rgba(88, 110, 255, .14), transparent 70%), rgba(13, 17, 23, .94);
}
.term-overlay-box { max-width: 440px; text-align: center; color: #c9d1d9; }
.term-overlay-box h2 { color: #f0f6fc; margin: 14px 0 8px; font-size: 1.35rem; }
.term-overlay-box p { color: #8b949e; font-size: .95rem; margin-bottom: 22px; }
.term-overlay-icon { display: inline-grid; place-items: center; width: 56px; height: 56px; border-radius: 16px; background: #161b22; border: 1px solid #30363d; color: #7d95ff; }
.term-overlay-icon .icon { width: 28px; height: 28px; }
.term-overlay .btn-primary { --primary: #5b7bff; --primary-hover: #7088ff; --primary-text: #fff; }

/* ---------------------------------------------------------------- Konto & Verwaltung */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 28px; overflow-x: auto; }
.tabs a { display: inline-flex; align-items: center; gap: 8px; padding: 10px 14px; color: var(--text-2); font-weight: 600; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tabs a:hover { color: var(--text); text-decoration: none; }
.tabs a.active { color: var(--primary); border-bottom-color: var(--primary); }
.admin-grid { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 24px; align-items: start; }
.toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; }
.toolbar p { margin: 0; }
.toolbar form { margin: 0; }
.back-link { display: inline-flex; align-items: center; gap: 4px; font-size: .9rem; color: var(--muted); margin-bottom: 16px; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: .94rem; }
.table th { text-align: left; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 700; padding: 12px 16px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.table td { padding: 12px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table .nowrap { white-space: nowrap; }
.table-compact td, .table-compact th { padding: 9px 14px; }
.table form { margin: 0; display: inline; }
.row-muted td { opacity: .6; }
.user-cell { display: flex; align-items: center; gap: 12px; color: var(--text); }
.user-cell:hover { text-decoration: none; }
.user-cell:hover strong { color: var(--primary); }
.icon-cell { width: 36px; color: var(--muted); }
.icon-cell.is-done { color: var(--ok); }

.progress-course { margin-bottom: 12px; overflow: hidden; }
.progress-course summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 18px; cursor: pointer; list-style: none; }
.progress-course summary::-webkit-details-marker { display: none; }
.progress-course[open] summary { border-bottom: 1px solid var(--border); }
.pc-title { display: flex; flex-direction: column; }
.pc-bar { display: flex; align-items: center; gap: 10px; width: 200px; }

.user-head { display: flex; align-items: center; gap: 18px; margin-bottom: 8px; }
.user-head h2 { margin: 0 0 2px; }
.user-head p { margin: 0; }
.credentials { padding: 20px 22px; margin-bottom: 20px; border-color: color-mix(in srgb, var(--ok) 45%, var(--border)); background: var(--ok-soft); }
.credentials-head { display: flex; align-items: center; gap: 10px; color: var(--ok); margin-bottom: 14px; }
.credentials-list { display: grid; gap: 8px; margin: 0 0 12px; }
.credentials-list > div { display: grid; grid-template-columns: 130px 1fr; align-items: center; gap: 12px; }
.credentials-list dt { font-weight: 600; font-size: .9rem; color: var(--text-2); }
.credentials-list dd { margin: 0; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.credentials code { font-size: .95rem; padding: 3px 8px; border-radius: 6px; background: var(--surface); border: 1px solid var(--border); }
.credentials .pw { font-size: 1.05rem; font-weight: 700; letter-spacing: .03em; }
.credentials p { margin: 0; }
.danger-zone { border-color: color-mix(in srgb, var(--fail) 35%, var(--border)); }
.danger-zone p { margin: -8px 0 14px; }

/* ---------------------------------------------------------------- Responsiv */
@media (max-width: 1080px) {
  .module-layout { grid-template-columns: 1fr; gap: 20px; }
  .module-side { position: static; max-height: none; }
  .side-box:not([open]) .side-head { border-bottom: 0; }
  .side-head { cursor: pointer; }
  .admin-grid { grid-template-columns: 1fr; }
}
@media (max-width: 980px) {
  .page-lab { overflow: auto; }
  .lab-main { height: auto; }
  .lab { grid-template-columns: 1fr; height: auto; }
  .lab-side { border-right: 0; padding: 20px 16px; }
  .lab-term { height: 62vh; height: 62dvh; order: -1; }
  .lab-check { bottom: 8px; }
  .term-btn span { display: none; }
}
@media (max-width: 720px) {
  .container { padding: 20px 16px 48px; }
  .topbar-inner { padding: 0 16px; gap: 14px; }
  .brand-name { display: none; }
  .usermenu-name { display: none; }
  .mainnav a { padding: 6px 9px; font-size: .9rem; }
  .flash { padding: 0 16px; }
  .page-head { flex-direction: column; align-items: stretch; margin-bottom: 20px; }
  .stat-row .stat { flex: 1; min-width: 0; padding: 8px 12px; }
  .stat-row dd { font-size: 1.3rem; }
  .resume { grid-template-columns: auto 1fr auto; padding: 16px; }
  .resume-progress { display: none; }
  .course-grid { grid-template-columns: 1fr; }
  .course-hero { grid-template-columns: 1fr; padding: 22px; gap: 20px; }
  .course-hero-side { flex-direction: row; flex-wrap: wrap; justify-content: flex-start; text-align: left; }
  .ring { width: 96px; height: 96px; }
  .ring > span { width: 78px; height: 78px; }
  .ring strong { font-size: 1.2rem; }
  .module-link { padding: 12px 14px; gap: 12px; }
  .module-status { width: 34px; height: 34px; }
  .pager { grid-template-columns: 1fr; }
  .pager-next { grid-column: auto; }
  .question { padding: 18px 16px; }
  .module-actions { justify-content: stretch; }
  .module-actions .btn, .module-actions form { width: 100%; }
  .module-actions form .btn { width: 100%; }
  .term-title { display: none; }
  .task-body, .task-feedback, .hint { margin-left: 0; }
  .credentials-list > div { grid-template-columns: 1fr; gap: 2px; }
  .pc-bar { width: 110px; }
  .table th, .table td { padding: 10px 12px; }
}