:root {
  --bg: #0f1419;
  --panel: #1a222c;
  --panel2: #232d3a;
  --text: #e8eef4;
  --muted: #9aa8b6;
  --accent: #3d9cf0;
  --accent2: #2dd4a8;
  --warn: #f0b429;
  --danger: #f07178;
  --border: #2e3a48;
  --radius: 12px;
  --font: "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1b3a55 0%, transparent 50%),
              radial-gradient(900px 500px at 100% 0%, #16352f 0%, transparent 45%),
              var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.top {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
  gap: 1rem; padding: 0.9rem 1.4rem;
  background: rgba(15,20,25,0.85); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; backdrop-filter: blur(8px); z-index: 10;
}
.brand a { color: var(--text); font-weight: 700; font-size: 1.05rem; text-decoration: none; }
.brand .sub { display: block; color: var(--muted); font-size: 0.8rem; }
.topnav { display: flex; flex-wrap: wrap; gap: 0.85rem; align-items: center; font-size: 0.95rem; }
.who { color: var(--muted); }
.wrap { max-width: 980px; margin: 0 auto; padding: 1.5rem 1.2rem 3rem; }
.foot { max-width: 980px; margin: 0 auto; padding: 1rem 1.2rem 2rem; color: var(--muted); font-size: 0.85rem; }
h1 { font-size: 1.6rem; margin: 0.2rem 0 0.8rem; }
h2 { font-size: 1.15rem; margin: 0 0 0.6rem; }
.lede { color: var(--muted); margin-bottom: 1.4rem; }
.muted { color: var(--muted); }
.badge {
  display: inline-block; background: var(--panel2); border: 1px solid var(--border);
  border-radius: 6px; padding: 0.1rem 0.45rem; font-size: 0.85rem; font-weight: 700;
  color: var(--accent2); margin-right: 0.35rem;
}
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.1rem 1.2rem; margin-bottom: 1.1rem;
}
.grid.modules { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; }
.stats { list-style: none; padding: 0; margin: 0 0 1rem; color: var(--muted); font-size: 0.95rem; }
.stats li { margin: 0.25rem 0; }
.btn {
  display: inline-block; border: 1px solid var(--border); background: var(--panel2);
  color: var(--text); padding: 0.55rem 0.95rem; border-radius: 8px; cursor: pointer;
  font: inherit; text-decoration: none;
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn.primary { background: linear-gradient(135deg, #2a7fd4, #1f9f7a); border-color: transparent; font-weight: 600; }
.btn.ghost { background: transparent; }
.stage-bar, .stages {
  display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0.8rem 0 1.2rem;
}
.stage {
  flex: 1; min-width: 120px; text-align: center; padding: 0.7rem 0.6rem;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  color: var(--text); text-decoration: none; font-weight: 600;
}
.stage:hover { border-color: var(--accent); text-decoration: none; }
.stage.active { border-color: var(--accent2); box-shadow: 0 0 0 1px var(--accent2); }
.stage-bar.big .stage { padding: 1.1rem 0.8rem; }
.stage small { display: block; font-weight: 400; color: var(--muted); margin-top: 0.25rem; }
.login-card {
  max-width: 420px; margin: 3rem auto; background: var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem;
}
.stack { display: flex; flex-direction: column; gap: 0.85rem; }
label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.92rem; }
input[type=text], input[type=password], input:not([type]) {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 0.55rem 0.7rem; color: var(--text); font: inherit;
}
.hint { color: var(--muted); font-size: 0.88rem; margin-top: 1rem; }
.flashes { max-width: 980px; margin: 0.8rem auto 0; padding: 0 1.2rem; }
.flash { padding: 0.7rem 0.9rem; border-radius: 8px; margin-bottom: 0.5rem; }
.flash.ok { background: rgba(45,212,168,0.15); border: 1px solid rgba(45,212,168,0.4); }
.flash.error { background: rgba(240,113,120,0.15); border: 1px solid rgba(240,113,120,0.4); }
.notice, .didactic-tag {
  font-size: 0.88rem; color: var(--warn); background: rgba(240,180,41,0.08);
  border: 1px dashed rgba(240,180,41,0.45); border-radius: 8px; padding: 0.55rem 0.75rem;
}
.didactic-tag { display: inline-block; margin-bottom: 0.5rem; }
.lesson-list { list-style: none; padding: 0; margin: 0; }
.lesson-list li { border-bottom: 1px solid var(--border); }
.lesson-list a {
  display: grid; grid-template-columns: 7rem 1fr auto; gap: 0.6rem; align-items: center;
  padding: 0.7rem 0.2rem; color: var(--text); text-decoration: none;
}
.lesson-list a:hover { background: rgba(255,255,255,0.03); }
.lesson-list .cid { color: var(--accent2); font-weight: 700; font-size: 0.9rem; }
.lesson-list .ok { color: var(--accent2); font-size: 0.85rem; }
.lesson-list li.done .ttl { color: var(--muted); }
.bsi-box {
  background: var(--panel2); border-left: 3px solid var(--accent);
  padding: 0.8rem 1rem; border-radius: 0 8px 8px 0; margin: 1rem 0;
}
.callout { border-radius: 10px; padding: 0.9rem 1rem; margin: 1rem 0; }
.callout.praxis { background: rgba(45,212,168,0.08); border: 1px solid rgba(45,212,168,0.35); }
.callout.fehler { background: rgba(240,113,120,0.08); border: 1px solid rgba(240,113,120,0.35); }
.option {
  display: flex; gap: 0.6rem; align-items: flex-start;
  background: var(--panel2); border: 1px solid var(--border); border-radius: 8px;
  padding: 0.65rem 0.75rem; cursor: pointer;
}
.option:hover { border-color: var(--accent); }
.option input { margin-top: 0.25rem; }
.exam-q { border: 1px solid var(--border); border-radius: 10px; padding: 0.8rem; margin: 0; }
.exam-q legend { padding: 0 0.4rem; font-weight: 600; }
.pager { display: flex; justify-content: space-between; gap: 1rem; margin-top: 1rem; }
.actions { margin-top: 1.2rem; }
.progress-line { color: var(--muted); font-size: 0.9rem; }
.crumb { color: var(--muted); font-size: 0.9rem; }
table.log { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
table.log th, table.log td { text-align: left; padding: 0.45rem 0.4rem; border-bottom: 1px solid var(--border); vertical-align: top; }
table.log th { color: var(--muted); font-weight: 600; }
.prose { white-space: pre-wrap; }
@media (max-width: 640px) {
  .lesson-list a { grid-template-columns: 1fr; gap: 0.2rem; }
}
.daily-banner { border-color: rgba(61,156,240,0.5); }
.card.auto { opacity: 0.98; }
.card.hw { box-shadow: 0 0 0 1px rgba(45,212,168,0.25); }
.grid.modules { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.meta-line{font-size:.92rem;color:var(--muted);margin:.4rem 0}