:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --surface-2: #eef1f7;
  --text: #1b2433;
  --muted: #5b6678;
  --border: #d9dfeb;
  --accent: #2456d6;
  --accent-soft: #e3ebff;
  --good: #1f7d3d;
  --good-bg: #e4f5ea;
  --bad: #c0392b;
  --bad-bg: #fbe9e7;
  --warn: #b7791f;
  --warn-bg: #fdf3dc;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20, 30, 50, .06), 0 4px 16px rgba(20, 30, 50, .05);
  --font: "Source Sans 3", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "JetBrains Mono", SFMono-Regular, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141d;
    --surface: #171e2b;
    --surface-2: #1f2838;
    --text: #e6ebf5;
    --muted: #93a0b8;
    --border: #2b3750;
    --accent: #6c97ff;
    --accent-soft: #1c2a4d;
    --good: #55c27a;
    --good-bg: #16301f;
    --bad: #ff7d6e;
    --bad-bg: #3a1e1b;
    --warn: #f0b955;
    --warn-bg: #3a2f17;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font-family: var(--font); font-size: 16px; line-height: 1.5; }
button, input, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px 48px; }

/* ---------- Buttons & Eingaben ---------- */
.btn { border: 1px solid var(--border); background: var(--surface); padding: 8px 14px; border-radius: 10px; cursor: pointer; transition: background .15s, border-color .15s; }
.btn:hover:not(:disabled) { background: var(--surface-2); }
.btn:disabled { opacity: .5; cursor: default; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn-primary:hover:not(:disabled) { background: var(--accent); filter: brightness(1.08); }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-danger { color: var(--bad); }
.btn-sm { padding: 4px 10px; font-size: 14px; }
input[type=text], input[type=password], textarea {
  width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); outline: none;
}
input:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
label.field { display: block; margin-bottom: 12px; font-size: 14px; color: var(--muted); }
label.field input { margin-top: 4px; color: var(--text); }

/* ---------- Anmeldung ---------- */
.auth { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.auth-card { width: 100%; max-width: 400px; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 28px; box-shadow: var(--shadow); }
.auth-card h1 { margin: 4px 0 4px; font-size: 24px; letter-spacing: -.01em; }
.eyebrow { font-size: 12px; text-transform: uppercase; letter-spacing: .12em; color: var(--accent); font-weight: 700; }
.muted { color: var(--muted); }
.error-msg { background: var(--bad-bg); color: var(--bad); border-radius: 10px; padding: 8px 12px; margin: 0 0 12px; font-size: 14px; }
.auth-switch { margin-top: 14px; text-align: center; font-size: 14px; }
.link { background: none; border: none; color: var(--accent); cursor: pointer; padding: 0; text-decoration: underline; }

/* ---------- Kopf ---------- */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 0; flex-wrap: wrap; }
.brand { font-weight: 800; letter-spacing: -.01em; display: flex; align-items: center; gap: 10px; }
.brand-logo { width: 40px; height: 40px; border-radius: 10px; flex: none; }
.brand small { display: block; font-weight: 600; font-size: 12px; color: var(--accent); text-transform: uppercase; letter-spacing: .12em; }
.user-menu { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.avatar { width: 34px; height: 34px; border-radius: 50%; display: inline-grid; place-items: center; color: #fff; font-weight: 700; flex: none; object-fit: cover; }
.icon-btn { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); color: var(--muted); cursor: pointer; padding: 0; }
.icon-btn:hover { color: var(--accent); border-color: var(--accent); }
.icon-btn.danger { color: #d93025; }
.icon-btn.danger:hover { color: #fff; background: #d93025; border-color: #d93025; }
.track-tag { font-size: 11px; font-weight: 700; letter-spacing: .04em; background: var(--surface-2); color: var(--muted); border: 1px solid var(--border); border-radius: 6px; padding: 1px 6px; margin-left: 6px; }
.avatar-row { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.avatar-preview .avatar { width: 64px; height: 64px; font-size: 26px; }
.lb-help { font-size: 13px; margin: -6px 0 10px; }
.lb-rank { font-family: var(--mono); font-size: 13px; color: var(--muted); text-align: right; }
.lb-sub { display: block; font-size: 12px; font-weight: 400; color: var(--muted); }
.user-name { font-weight: 600; }

.hero h1 { margin: 8px 0 4px; font-size: clamp(26px, 4vw, 38px); letter-spacing: -.02em; }
.hero p { margin: 0 0 16px; color: var(--muted); max-width: 60ch; }
.pills { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin-bottom: 18px; }
.pill { text-align: left; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; box-shadow: var(--shadow); }
button.pill { cursor: pointer; }
button.pill:hover { border-color: var(--accent); }
.pill .v { font-family: var(--mono); font-size: 26px; font-weight: 700; display: block; }
.pill .l { font-size: 13px; color: var(--muted); }
.pill.good .v { color: var(--good); }
.pill.bad .v { color: var(--bad); }
.note { background: var(--warn-bg); color: var(--warn); border-radius: 10px; padding: 8px 12px; margin-bottom: 12px; font-size: 14px; }

/* ---------- Bestenliste ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.card h2 { margin: 0 0 12px; font-size: 18px; }
.lb-row { display: grid; grid-template-columns: 22px 34px minmax(120px, 300px) 1fr 52px; align-items: center; gap: 10px; padding: 6px 0; }
.lb-row.you .lb-name { font-weight: 700; }
.tag-you { font-size: 11px; background: var(--accent-soft); color: var(--accent); border-radius: 6px; padding: 1px 6px; margin-left: 6px; }
.bar-track { height: 8px; background: var(--surface-2); border-radius: 99px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--accent); border-radius: 99px; transition: width .3s; }
.lb-pct { font-family: var(--mono); text-align: right; font-size: 14px; }

/* ---------- Layout ---------- */
.layout { display: grid; grid-template-columns: 300px 1fr; gap: 16px; margin-top: 16px; align-items: start; }
@media (max-width: 860px) { .layout { grid-template-columns: 1fr; } }
.topics { max-height: 78vh; overflow: auto; padding: 8px; }
@media (max-width: 860px) { .topics { max-height: 260px; } }
.topic-btn { display: block; width: 100%; text-align: left; background: transparent; border: 1px solid transparent; border-radius: 10px; padding: 8px 10px; cursor: pointer; }
.topic-btn:hover { background: var(--surface-2); }
.topic-btn.active { background: var(--accent-soft); border-color: var(--accent); }
.topic-btn .row1 { display: flex; justify-content: space-between; gap: 8px; font-size: 14px; }
.topic-btn .cnt { font-family: var(--mono); color: var(--muted); font-size: 13px; white-space: nowrap; }
.topic-btn .bar-track { margin-top: 6px; height: 5px; }
.topics hr { border: none; border-top: 1px solid var(--border); margin: 8px 0; }

/* ---------- Quiz ---------- */
.quiz-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.qtopic { font-size: 12px; text-transform: uppercase; letter-spacing: .1em; color: var(--accent); font-weight: 700; }
.qcounter { font-family: var(--mono); font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.flag-btn { border: 1px solid var(--border); background: var(--surface); border-radius: 8px; padding: 2px 8px; cursor: pointer; filter: grayscale(1); opacity: .7; }
.flag-btn.active { filter: none; opacity: 1; border-color: var(--bad); background: var(--bad-bg); }
.question { font-size: 20px; font-weight: 600; line-height: 1.35; margin: 4px 0 16px; white-space: pre-wrap; }
.choices { display: grid; gap: 10px; }
.choice { display: grid; grid-template-columns: 30px 1fr; gap: 10px; padding: 12px; border: 1px solid var(--border); border-radius: 10px; cursor: pointer; background: var(--surface); }
.choice:hover:not(.locked) { border-color: var(--accent); background: var(--accent-soft); }
.choice.selected { border-color: var(--accent); background: var(--accent-soft); }
.choice .letter { width: 28px; height: 28px; border-radius: 8px; background: var(--surface-2); display: grid; place-items: center; font-family: var(--mono); font-weight: 700; font-size: 14px; }
.choice .exp { display: none; margin-top: 6px; font-size: 14px; color: var(--muted); }
.choice.locked { cursor: default; }
.choice.locked .exp { display: block; }
.choice.correct { border-color: var(--good); background: var(--good-bg); }
.choice.correct .letter { background: var(--good); color: #fff; }
.choice.wrong { border-color: var(--bad); background: var(--bad-bg); }
.choice.wrong .letter { background: var(--bad); color: #fff; }
.choice.missed { border-color: var(--warn); background: var(--warn-bg); border-style: dashed; }
.choice.dim { opacity: .65; }
.multi-hint { font-size: 14px; color: var(--muted); }
.feedback { min-height: 28px; margin: 14px 0 4px; font-weight: 700; }
.feedback.good { color: var(--good); }
.feedback.bad { color: var(--bad); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.open-row { display: flex; gap: 8px; }
.verdict { font-weight: 700; margin: 14px 0 8px; }
.verdict.good { color: var(--good); }
.verdict.bad { color: var(--bad); }
.answer-box { border-radius: 10px; padding: 10px 12px; margin-bottom: 8px; background: var(--surface-2); white-space: pre-wrap; }
.answer-box b { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 2px; }
.answer-box.good-box { background: var(--good-bg); }
.answer-box.bad-box { background: var(--bad-bg); }
.quiz-anim { animation: pop .25s ease; }
@keyframes pop { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- Tabelle ---------- */
.progress-card { margin-top: 16px; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding: 6px 8px; }
td { padding: 8px; border-top: 1px solid var(--border); font-size: 14px; }
td.mono, td.pct { font-family: var(--mono); white-space: nowrap; }
td.pct { text-align: right; }
td.bar { width: 28%; min-width: 80px; }

/* ---------- Modal ---------- */
.modal-overlay { position: fixed; inset: 0; background: rgba(8, 12, 20, .55); display: grid; place-items: center; padding: 16px; z-index: 50; }
.modal { background: var(--surface); border-radius: 16px; width: 100%; max-width: 760px; max-height: 88vh; display: flex; flex-direction: column; border: 1px solid var(--border); }
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.modal-head h3 { margin: 0; font-size: 18px; }
.modal-body { padding: 18px; overflow: auto; }
.review-item { border-bottom: 1px solid var(--border); padding-bottom: 18px; margin-bottom: 18px; }
.review-item:last-child { border: none; margin: 0; }
.rt-row { margin-bottom: 12px; }
.rt-head { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 4px; gap: 8px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; align-items: end; }
.section-title { margin: 22px 0 10px; font-size: 16px; }
.section-title:first-child { margin-top: 0; }
.inline-check { display: flex; align-items: center; gap: 6px; font-size: 14px; }
.inline-check input { width: auto; }
.ok-msg { background: var(--good-bg); color: var(--good); border-radius: 10px; padding: 8px 12px; margin-bottom: 12px; font-size: 14px; }
.footer { text-align: center; margin-top: 32px; color: var(--muted); font-size: 13px; }

.side-title { font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted, #8a93a6); font-weight: 700; padding: 6px 4px 2px; }
.qsrc { text-transform: none; letter-spacing: 0; font-weight: 500; color: var(--muted, #8a93a6); }

.auth-logo { display: block; width: 64px; height: 64px; border-radius: 16px; margin: 0 0 14px; }