/* ---------- Gestaltung „Lernjournal“: Papierton mit feinem Punktraster, Serifen-Überschriften,
   jedes Fach mit eigener Registerfarbe (wie Trennblätter im Ordner).
   Hell: Sandtöne (angelehnt an papertrade) mit Bronze als Akzent. Dunkel: warmes Dunkelbraun mit Petrol. */
:root {
  --bg: #f4ecd8; --bar: #ede5d0; --panel: #faf6ed; --panel-2: #efe7d4; --text: #2a2520; --muted: #6f6553;
  --border: #d9cfbc;
  --accent: #6e5730; --accent-hover: #5a4626; --accent-soft: #e8ddc2; --accent-text: #faf6ed; --cloze: #7a5a24;
  --ok: #2d5f3a; --bad: #8b2020; --meh: #7a5a10;
  --dots: rgba(42, 37, 32, .06);
  --shadow: 0 1px 0 rgba(42, 37, 32, .04), 0 2px 8px rgba(42, 37, 32, .05);
  --shadow-lg: 0 10px 28px rgba(42, 37, 32, .12);
  --radius: 14px; --radius-sm: 10px; color-scheme: light;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  /* Registerfarben: kategoriale Referenzpalette des dataviz-Skills (per Validator geprüft); Fachname steht immer daneben */
  --reg-0: #2a78d6; --reg-1: #eb6834; --reg-2: #1baf7a; --reg-3: #eda100;
  --reg-4: #e87ba4; --reg-5: #008300; --reg-6: #4a3aa7; --reg-7: #e34948;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bar: #171512;
    --bg: #171512; --panel: #201d19; --panel-2: #2a2621; --text: #ece6db; --muted: #a69e90; --border: #38322a;
    --accent: #5fb5bc; --accent-hover: #80c8ce; --accent-soft: #1d3638; --accent-text: #0c1415; --cloze: #6fc4ca;
    --ok: #4ac26b; --bad: #ff6b6b; --meh: #e3b341;
    --dots: rgba(255, 245, 225, .045);
    --shadow: 0 1px 2px rgba(0, 0, 0, .35); --shadow-lg: 0 14px 34px rgba(0, 0, 0, .45);
    --reg-0: #3987e5; --reg-1: #d95926; --reg-2: #199e70; --reg-3: #c98500;
    --reg-4: #d55181; --reg-5: #008300; --reg-6: #9085e9; --reg-7: #e66767;
  }
}
:root[data-theme="dark"] {
    color-scheme: dark;
    --bar: #171512;
    --bg: #171512; --panel: #201d19; --panel-2: #2a2621; --text: #ece6db; --muted: #a69e90; --border: #38322a;
    --accent: #5fb5bc; --accent-hover: #80c8ce; --accent-soft: #1d3638; --accent-text: #0c1415; --cloze: #6fc4ca;
    --ok: #4ac26b; --bad: #ff6b6b; --meh: #e3b341;
    --dots: rgba(255, 245, 225, .045);
    --shadow: 0 1px 2px rgba(0, 0, 0, .35); --shadow-lg: 0 14px 34px rgba(0, 0, 0, .45);
    --reg-0: #3987e5; --reg-1: #d95926; --reg-2: #199e70; --reg-3: #c98500;
    --reg-4: #d55181; --reg-5: #008300; --reg-6: #9085e9; --reg-7: #e66767;
  }

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background-color: var(--bg); color: var(--text); -webkit-font-smoothing: antialiased;
       background-image: radial-gradient(var(--dots) 1px, transparent 1.2px); background-size: 22px 22px;
       font: 16px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Helvetica, Arial, sans-serif; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-hover); }
main { max-width: 960px; margin: 0 auto; padding: 28px 16px 64px; }
h1, h2, h3, .serif { font-family: var(--serif); }
h1 { font-size: 38px; line-height: 1.15; font-weight: 600; letter-spacing: -.01em; margin: 0 0 6px; }
h2 { font-size: 24px; font-weight: 600; letter-spacing: -.005em; margin: 36px 0 14px; }
h3 { font-weight: 600; }
.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.muted { color: var(--muted); font-size: 14px; }
.page-intro { color: var(--muted); margin: 0 0 20px; max-width: 640px; }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px;
         box-shadow: var(--shadow); }
form.panel { display: grid; gap: 16px; margin-top: 20px; }
input[type=file] { width: 100%; padding: 22px 18px; border: 1.5px dashed color-mix(in srgb, var(--accent) 35%, var(--border));
                   border-radius: 12px; background: var(--panel-2); color: var(--muted); font: inherit; font-size: 14px; cursor: pointer; }
input[type=file]:hover { border-color: var(--accent); }
input[type=file]::file-selector-button { font: inherit; font-weight: 600; font-size: 14px; margin-right: 12px; padding: 8px 14px;
                                         border-radius: 8px; border: 0; background: var(--accent); color: var(--accent-text); cursor: pointer; }
label.check { display: flex; flex-wrap: wrap; gap: 2px 8px; align-items: center; }
label.check > input, label.check > select { flex: none; }
.badge.prio1 { border-color: var(--accent); color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Buttons: primär gefüllt, sekundär getönt */
button, .button { font: inherit; font-weight: 600; font-size: 15px; border-radius: var(--radius-sm); padding: 10px 18px;
                  cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center;
                  gap: 6px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-text);
                  transition: background .15s, border-color .15s, color .15s, transform .05s; }
button:hover:not(:disabled), .button:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-text); }
button:active:not(:disabled), .button:active { transform: translateY(1px); }
button:disabled { opacity: .45; cursor: default; }
.secondary, button.secondary, .button.secondary { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.secondary:hover:not(:disabled), .button.secondary:hover { background: var(--accent-soft); color: var(--accent-hover);
                                                           border-color: color-mix(in srgb, var(--accent) 35%, transparent); }
.danger, button.danger { background: transparent; color: var(--bad); border-color: color-mix(in srgb, var(--bad) 45%, transparent); }
.danger:hover:not(:disabled) { background: color-mix(in srgb, var(--bad) 10%, transparent); color: var(--bad);
                               border-color: var(--bad); }
.small, button.small, .button.small { padding: 5px 11px; font-size: 13px; border-radius: 8px; }
.link, button.link { background: none; border: 0; padding: 0; color: var(--accent); cursor: pointer; font: inherit;
                     font-weight: 400; text-decoration: underline; text-underline-offset: 2px; }
.link:hover:not(:disabled) { background: none; color: var(--accent-hover); }

/* Eingabefelder einheitlich */
input[type=text], input[type=number], input[type=password], input:not([type]), select, textarea {
  font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 10px; transition: border-color .15s, box-shadow .15s; }
input[type=text]:focus, input[type=number]:focus, input[type=password]:focus, input:not([type]):focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
input[type=radio], input[type=checkbox] { accent-color: var(--accent); width: 16px; height: 16px; }

.status { margin-top: 16px; }
.error { color: var(--bad); }
.summary { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-top: 24px; }
.item { margin-bottom: 10px; }
.item-head { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.badge { border: 1px solid var(--border); border-radius: 99px; padding: 0 9px; font-size: 12px; line-height: 20px; }
.front { white-space: pre-line; }
.back { white-space: pre-line; color: var(--muted); margin-top: 6px; }
.cloze { color: var(--cloze); font-weight: 600; }
.options { margin: 8px 0 0; padding-left: 0; list-style: none; }
.options li.correct { color: var(--ok); font-weight: 600; }
details { margin-top: 6px; }
summary { cursor: pointer; }
.feedback { display: flex; gap: 6px; margin-top: 12px; flex-wrap: wrap; }
.feedback button { background: transparent; color: var(--muted); border-color: var(--border); padding: 3px 10px;
                   font-size: 13px; font-weight: 500; }
.feedback button:hover:not(:disabled) { background: var(--panel-2); color: var(--text); border-color: var(--border); }
.feedback button.active[data-rating=gut] { color: var(--ok); border-color: var(--ok); }
.feedback button.active[data-rating=falsch] { color: var(--bad); border-color: var(--bad); }
.feedback button.active[data-rating=unnoetig] { color: var(--meh); border-color: var(--meh); }
.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid var(--border); border-top-color: var(--accent);
           border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -2px; margin-right: 6px; }
@keyframes spin { to { transform: rotate(360deg); } }
.steps { list-style: none; margin: 0 0 10px; padding: 0; display: grid; gap: 8px; }
.steps li { display: flex; gap: 8px; align-items: baseline; }
.steps li.todo { color: var(--muted); }
.steps li.done .icon { color: var(--ok); }
.steps .icon { display: inline-block; width: 14px; margin-right: 6px; text-align: center; }
fieldset.modes { border: 0; margin: 0; padding: 0; display: grid; gap: 8px; }
fieldset.modes .sub { margin-left: 26px; }
fieldset.modes .count { flex-wrap: wrap; }
fieldset.modes input[type=number] { width: 76px; padding: 3px 8px; }
.lecture { margin-top: 16px; display: grid; gap: 10px; }
.lecture-head { display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; justify-content: space-between; }
.choice { display: grid; gap: 6px; }
.choice label { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.choice input[type=number] { width: 96px; }
.warn { color: var(--meh); font-size: 14px; }
.bulk { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 10px; }
@media print {
  .topbar, form, .bulk, .feedback, .button, button, summary { display: none !important; }
  .panel { border: 0; padding: 0; box-shadow: none; }
  body { background: #fff; color: #000; }
}

/* ---------- Kopfleiste und Fußzeile (alle Seiten) */
.topbar { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bar) 90%, transparent);
          backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px);
          border-bottom: 1px solid var(--border); }
.topbar-inner { max-width: 960px; margin: 0 auto; padding: 10px 16px; display: flex; align-items: center; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 600;
         font-family: var(--serif); font-size: 19px; white-space: nowrap; }
.brand svg { color: var(--accent); }
.brand:hover { color: var(--text); }

nav.top { display: flex; gap: 2px; margin-left: auto; overflow-x: auto; scrollbar-width: none; }
nav.top::-webkit-scrollbar { display: none; }
nav.top a { padding: 8px 12px 6px; color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500;
            white-space: nowrap; border-bottom: 2px solid transparent; transition: color .15s, border-color .15s; }
nav.top a:hover { color: var(--text); }
nav.top a.active { color: var(--text); border-bottom-color: var(--accent); }
@media (max-width: 640px) {
  .topbar-inner { flex-wrap: wrap; gap: 6px 12px; padding: 8px 16px; }
  nav.top { margin-left: 0; width: 100%; }
  .brand-name { font-size: 15px; }
}
footer { margin-top: 56px; padding-top: 18px; border-top: 1px solid var(--border); font-size: 13px; color: var(--muted);
         display: grid; gap: 8px; }
footer code { font-size: 14px; color: var(--text); letter-spacing: 1px; background: var(--panel-2); padding: 1px 6px;
              border-radius: 6px; }
footer .row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
footer input { width: 210px; }
.notice { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); background: color-mix(in srgb, var(--accent-soft) 55%, var(--panel)); }

.row-actions { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------- Lernen */
.counters { display: inline-grid; grid-template-columns: repeat(3, 48px); text-align: right; font-variant-numeric: tabular-nums; }
.c-new { color: #1a5bc4; } .c-learn { color: var(--bad); } .c-due { color: var(--ok); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .c-new { color: #58a6ff; }
}
:root[data-theme="dark"] .c-new { color: #58a6ff; }

.deck-list { display: grid; gap: 0; margin-top: 12px; }
.deck-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; overflow-wrap: anywhere; gap: 16px; align-items: center;
            padding: 12px 0; border-bottom: 1px solid var(--border); }
.deck-row:last-child { border-bottom: 0; }
.deck-head { font-size: 13px; padding-top: 0; }
.study-head { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; margin-bottom: 16px; }
.study-head strong { flex: 1; }
.study-card { min-height: 280px; display: grid; gap: 14px; align-content: center; font-size: 21px; line-height: 1.5;
              padding: 40px 32px; border-radius: 18px; box-shadow: var(--shadow-lg); max-width: 820px; margin: 0 auto; }
@media (max-width: 600px) { .study-card { padding: 28px 18px; font-size: 19px; min-height: 220px; } }
.card-face { white-space: pre-line; text-align: center; }
.card-extra { white-space: pre-line; text-align: center; color: var(--muted); font-size: 17px; }
.study-card hr { width: 100%; border: 0; border-top: 1px solid var(--border); }
.card-source { font-size: 13px; text-align: center; }
.card-slide { max-width: 100%; border: 1px solid var(--border); border-radius: 6px; justify-self: center; }
.study-card .feedback { justify-content: center; }
.small-note { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; }
.study-controls { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; align-items: center; margin-top: 16px; }
button.rate { display: grid; gap: 0; min-width: 108px; padding: 9px 14px; background: var(--panel); color: var(--text);
              border-color: var(--border); box-shadow: var(--shadow), inset 0 -3px 0 var(--rate-color); }
button.rate:hover:not(:disabled) { background: var(--panel-2); color: var(--text); border-color: var(--border); }
.rate-time { font-size: 12px; font-weight: 500; color: var(--muted); }
.rate-1 { --rate-color: var(--bad); } .rate-2 { --rate-color: var(--meh); } .rate-3 { --rate-color: var(--ok); }
.rate-4 { --rate-color: #1f6feb; }
.done { text-align: center; }
.done .row-actions { justify-content: center; }
@media (max-width: 600px) {
  .deck-row { grid-template-columns: 1fr; gap: 6px; }
  .deck-head { display: none; }
  button.rate { min-width: 70px; flex: 1; }
}

/* ---------- Kreuzen */
.setup { display: grid; gap: 10px; }
.setup input[type=number] { width: 80px; font: inherit; padding: 4px 8px; border-radius: 6px;
                            border: 1px solid var(--border); background: var(--bg); color: var(--text); }
.session-row { display: grid; grid-template-columns: 140px 1fr 70px auto; gap: 12px; align-items: center;
               padding: 10px 0; border-bottom: 1px solid var(--border); }
.progress { height: 6px; background: var(--border); border-radius: 99px; overflow: hidden; margin-bottom: 14px; }
.progress > div { height: 100%; background: var(--accent); }
.exam-question { display: grid; gap: 6px; }
.exam-question p { margin: 4px 0; }
.options-list { display: grid; gap: 8px; margin-top: 8px; }
button.option { display: flex; gap: 12px; align-items: flex-start; text-align: left; background: var(--panel);
                color: var(--text); border-color: var(--border); padding: 10px 12px; }
button.option .letter { font-weight: 700; min-width: 18px; }
button.option.selected { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
button.option.correct { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, var(--panel)); }
button.option.wrong { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 12%, var(--panel)); }
.explanation { margin-top: 12px; padding: 12px; border-radius: 8px; border: 1px solid var(--border); display: grid; gap: 8px; }
.explanation.ok { border-color: var(--ok); } .explanation.bad { border-color: var(--bad); }
.explanation .card-source { text-align: left; }
.summary-box { text-align: center; margin-bottom: 14px; }
.big-score { font-size: 56px; font-weight: 700; line-height: 1.1; }
.score-good { color: var(--ok); } .score-ok { color: var(--meh); } .score-bad { color: var(--bad); }
.progress > div.score-good { background: var(--ok); } .progress > div.score-ok { background: var(--meh); }
.progress > div.score-bad { background: var(--bad); }
.lecture-stats { display: grid; gap: 10px; margin-bottom: 14px; }
.stat-row { display: grid; grid-template-columns: 1fr 160px 110px; gap: 12px; align-items: center; }
.stat-row .progress { margin: 0; }
.review-item { margin-top: 8px; }
.review-item summary { cursor: pointer; }
.review-item .mark { font-weight: 700; }
.review-item.ok .mark { color: var(--ok); } .review-item.bad .mark { color: var(--bad); }
.options li.wrong-answer { color: var(--bad); }
@media (max-width: 600px) {
  .session-row { grid-template-columns: 1fr auto; }
  .stat-row { grid-template-columns: 1fr; gap: 4px; }
}
.deck-row .row-actions { flex-wrap: nowrap; }
@media (max-width: 600px) { .deck-row .row-actions { flex-wrap: wrap; } }
/* Bewertungs-Buttons bleiben auch bei großen Folienbildern sichtbar */
.study-controls { position: sticky; bottom: 0; padding: 10px 0; background: var(--bg); }
.study-card .card-slide { max-height: 55vh; object-fit: contain; }

/* ---------- Diagramme (Fächer). Farben per Validator geprüft (dataviz-Skill):
   Lernstand = einfarbige Blau-Abstufung (ordinal), ungesehen neutral;
   Kreuzen = Blau/Orange statt Grün/Rot (Grün/Rot fällt bei Rot-Grün-Schwäche durch, ΔE 4,1). */
:root {
  --st-unseen: #e2d8c3; --st-learning: #86b6ef; --st-young: #3987e5; --st-mature: #184f95;
  --q-right: #2a78d6; --q-wrong: #eb6834; --q-open: #e2d8c3;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --st-unseen: #3a3a37; --st-learning: #1c5cab; --st-young: #3987e5; --st-mature: #9ec5f4;
    --q-right: #3987e5; --q-wrong: #d95926; --q-open: #3a3a37;
  }
}
:root[data-theme="dark"] {
    --st-unseen: #3a3a37; --st-learning: #1c5cab; --st-young: #3987e5; --st-mature: #9ec5f4;
    --q-right: #3987e5; --q-wrong: #d95926; --q-open: #3a3a37;
  }

.stack { display: flex; gap: 2px; height: 12px; border-radius: 4px; overflow: hidden; min-width: 80px; }
.stack.mini { height: 8px; }
.seg { min-width: 3px; }
.seg.unseen, .swatch.unseen { background: var(--st-unseen); }
.seg.learning, .swatch.learning { background: var(--st-learning); }
.seg.young, .swatch.young { background: var(--st-young); }
.seg.mature, .swatch.mature { background: var(--st-mature); }
.seg.right, .swatch.right { background: var(--q-right); }
.seg.wrong, .swatch.wrong { background: var(--q-wrong); }
.seg.open, .swatch.open, .seg.empty { background: var(--q-open); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 8px; font-size: 14px; color: var(--muted); }
.legend strong { color: var(--text); font-weight: 600; }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: 0; }
.hero { font-size: 40px; font-weight: 700; line-height: 1.1; letter-spacing: -.02em; }
.hero-sub { color: var(--muted); font-size: 14px; margin-bottom: 12px; }

/* ---------- Fächer */
.fach-section { margin-top: 16px; display: grid; gap: 6px; }
.fach-head { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; }
.fach-head h2 { margin: 0; font-size: 18px; flex: 1; min-width: 160px; }
.fach-head h2 a { color: var(--text); text-decoration: none; }
.fach-head h2 a:hover { color: var(--accent); }
.fach-summary { display: grid; grid-template-columns: minmax(80px, 220px) 1fr; gap: 12px; align-items: center; font-size: 14px; }
.deck-fach { font: inherit; font-size: 13px; padding: 2px 6px; border-radius: 6px; border: 1px solid var(--border);
             background: var(--bg); color: var(--muted); margin-top: 4px; max-width: 100%; }
.dashboard { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
.deck-table { display: grid; }
/* feste Spaltenbreiten: jede Zeile ist ein eigenes Grid – mit „auto“ würden Kopf und Werte verrutschen */
.deck-table .tr { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) 150px minmax(0, 1fr) 190px;
                  gap: 14px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); overflow-wrap: anywhere; }
.deck-table .th { font-size: 13px; color: var(--muted); padding-top: 0; }
.deck-table .tr > .counters { width: 150px; grid-template-columns: repeat(3, 50px); }
.deck-table .tr > .row-actions { justify-content: flex-end; }
.cell-stat { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
@media (max-width: 700px) {
  .dashboard { grid-template-columns: 1fr; }
  .deck-table .tr { grid-template-columns: 1fr; gap: 6px; }
  .deck-table .th { display: none; }
  .fach-summary { grid-template-columns: 1fr; }
}

/* ---------- Dialoge */
.app-dialog { width: min(440px, calc(100vw - 32px)); color: var(--text); }
.app-dialog::backdrop { background: rgba(0, 0, 0, .45); }
.app-dialog form { display: grid; gap: 10px; }
.app-dialog input { font: inherit; padding: 6px 10px; border-radius: 6px; border: 1px solid var(--border);
                    background: var(--bg); color: var(--text); }

/* ---------- Fach lernen */
.study-settings { display: grid; gap: 10px; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--border); font-size: 14px; }
.study-settings input[type=number] { width: 80px; font: inherit; padding: 2px 8px; border-radius: 6px;
                                     border: 1px solid var(--border); background: var(--bg); color: var(--text); }
.fach-head .counters { font-size: 14px; }

/* Hintergrundwissen in Erklärungen (nicht aus der Vorlesung) */
.supplement { display: block; margin-top: 8px; color: var(--muted); font-size: 14px; }

/* ---------- Lerneinstellungen */
.settings-panel { margin-top: 24px; }
.settings-panel summary { cursor: pointer; }
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 14px 0; align-items: start; }
.settings-grid label { display: grid; gap: 4px; font-size: 14px; }
.settings-grid input { font: inherit; padding: 4px 8px; border-radius: 6px; border: 1px solid var(--border);
                       background: var(--bg); color: var(--text); max-width: 160px; }
@media (max-width: 600px) { .settings-grid { grid-template-columns: 1fr; } }

/* ---------- Prüfungssimulation */
.exam-grid { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.exam-grid button { min-width: 36px; padding: 4px 8px; font-size: 14px; background: var(--panel); color: var(--muted); border-color: var(--border); }
.exam-grid button.done { color: var(--text); border-color: var(--accent); }
.exam-grid button.current { box-shadow: 0 0 0 2px var(--accent); color: var(--text); }
#exam-clock { font-variant-numeric: tabular-nums; }

/* ---------- Feedback (aussortierte Karten/Fragen) */
.feedback-note { align-self: center; font-size: 13px; }
.sorted-out-note { font-size: 14px; margin-bottom: 14px; }
.badge.flag-falsch { color: var(--bad); border-color: var(--bad); }
.badge.flag-unnoetig { color: var(--meh); border-color: var(--meh); }
.edit-form { display: grid; gap: 10px; }
.edit-field { display: grid; gap: 4px; font-size: 14px; }
.edit-field > span { color: var(--muted); }
.edit-form textarea, .edit-form input[type=text], #view > .row select {
  font: inherit; padding: 6px 10px; border-radius: 6px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); width: 100%; box-sizing: border-box; }
.edit-form textarea { resize: vertical; }
.option-edit { display: grid; grid-template-columns: auto auto minmax(0, 1fr); gap: 8px; align-items: center; }
#view > .row select { width: auto; max-width: 100%; }


/* ---------- Startseite „Heute“ */
.greeting { margin-bottom: 22px; }
.greeting .muted { font-size: 15px; }
.today-hero { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 28px; align-items: center; padding: 26px 28px; }
.goal { display: grid; justify-items: center; gap: 6px; }
.goal-edit { font-size: 13px; }
.today-main { display: grid; gap: 12px; }
.today-main .big { font-size: 22px; font-weight: 650; letter-spacing: -.01em; line-height: 1.3; }
.today-main .row-actions .button { padding: 12px 22px; font-size: 16px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px; border-radius: 99px; font-size: 14px;
        background: var(--panel-2); color: var(--text); }
.chip strong { font-weight: 650; }
.chip.accent { background: var(--accent-soft); color: var(--accent); }
@media (max-width: 640px) {
  .today-hero { grid-template-columns: 1fr; justify-items: center; text-align: center; gap: 18px; padding: 22px 18px; }
  .today-main .row-actions, .chips { justify-content: center; }
}

/* Fortschrittsring (Tagesziel, Lernstand pro Fach) */
.ring { display: block; }
.ring .track { stroke: var(--panel-2); }
.ring .bar { stroke: var(--accent); transition: stroke-dashoffset .6s ease; }
.ring-wrap { position: relative; display: grid; place-items: center; }
.ring-label { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; line-height: 1.15; }
.ring-label strong { font-size: 26px; letter-spacing: -.02em; }
.ring-label span { font-size: 12px; color: var(--muted); }
.ring-wrap.small .ring-label strong { font-size: 14px; }

.subject-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.subject-card { display: grid; gap: 14px; transition: box-shadow .2s, transform .2s, border-color .2s; }
.subject-card:hover { box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--accent) 25%, var(--border)); }
.subject-top { display: flex; gap: 14px; align-items: center; }
.subject-top h3 { margin: 0; font-size: 17px; letter-spacing: -.01em; overflow-wrap: anywhere; }
.subject-top h3 a { color: var(--text); text-decoration: none; }
.subject-top h3 a:hover { color: var(--accent); }
.subject-card .counters { font-size: 14px; grid-template-columns: repeat(3, auto); gap: 14px; text-align: left; }
.subject-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.empty-state { text-align: center; padding: 40px 24px; display: grid; gap: 12px; justify-items: center; }
.empty-state .big { font-size: 20px; font-weight: 650; }

/* Aktivitätskalender: einfarbige Abstufung im Akzentton (hell Bronze, dunkel Petrol) (sequenziell, hell → dunkel); Werte stehen im Tooltip */
:root { --heat-0: #e9dfc9; --heat-1: #dccaa1; --heat-2: #c2a56e; --heat-3: #9a7a41; --heat-4: #6a5126; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --heat-0: #2c2823; --heat-1: #1d3a3c; --heat-2: #2a6266; --heat-3: #3f8f95; --heat-4: #7cc9ce; }
}
:root[data-theme="dark"] { --heat-0: #2c2823; --heat-1: #1d3a3c; --heat-2: #2a6266; --heat-3: #3f8f95; --heat-4: #7cc9ce; }

.heatmap-scroll { overflow-x: auto; padding: 2px 4px 4px 2px; }
.heatmap { display: grid; grid-template-rows: repeat(7, 13px); grid-auto-flow: column; grid-auto-columns: 13px; gap: 3px;
           width: max-content; }
.heatmap .cell { border-radius: 3px; background: var(--heat-0); }
.heatmap .cell.l1 { background: var(--heat-1); } .heatmap .cell.l2 { background: var(--heat-2); }
.heatmap .cell.l3 { background: var(--heat-3); } .heatmap .cell.l4 { background: var(--heat-4); }
.heatmap .cell.today { box-shadow: 0 0 0 1.5px var(--text); }
.heat-months { display: grid; grid-auto-flow: column; grid-auto-columns: 16px; font-size: 11px; color: var(--muted);
               height: 16px; width: max-content; }
.heat-legend { display: flex; align-items: center; gap: 3px; font-size: 12px; color: var(--muted); }
.heat-legend .cell { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }
.heat-foot { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; justify-content: space-between; margin-top: 10px; }
.stat-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.stat-tile { background: var(--panel-2); border-radius: var(--radius-sm); padding: 12px 14px; }
.stat-tile strong { display: block; font-size: 22px; letter-spacing: -.02em; }
.stat-tile span { font-size: 13px; color: var(--muted); }

/* Tagesziel während des Lernens */
.goal-pill { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.goal-pill .bar { width: 72px; height: 6px; border-radius: 99px; background: var(--panel-2); overflow: hidden; }
.goal-pill .bar > div { height: 100%; background: var(--accent); border-radius: 99px; transition: width .4s ease; }
.goal-pill.reached { color: var(--accent); font-weight: 600; }
.focus-mode footer { display: none; }

/* Zurückhaltende Aktionen (seltene oder destruktive Buttons), damit „Lernen“ hervorsticht */
.ghost, button.ghost, .button.ghost { background: transparent; color: var(--muted); border-color: transparent; font-weight: 500; }
.ghost:hover:not(:disabled), .button.ghost:hover { background: var(--panel-2); color: var(--text); border-color: transparent; }
.ghost.danger-text:hover:not(:disabled) { color: var(--bad); background: color-mix(in srgb, var(--bad) 8%, transparent); }
.setup { gap: 12px; }
.setup label.check.sub { margin-left: 26px; }

/* ---------- Lernen-Übersicht: Semester-Kapitel, Fach-Registerkarten, aufklappbare Vorlesungen */
.page-head { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: flex-end; justify-content: space-between; margin-bottom: 8px; }
.chapter { display: flex; align-items: center; gap: 12px; margin: 34px 0 12px; }
.chapter-num { font-family: var(--serif); font-size: 46px; line-height: 1; color: var(--accent); min-width: 32px; }
.chapter-rule { flex: 1; height: 1px; background: var(--border); }
.filter-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.chip-btn { background: transparent; color: var(--muted); border: 1px solid var(--border); border-radius: 99px;
            padding: 5px 14px; font-size: 14px; font-weight: 500; }
.chip-btn:hover:not(:disabled) { background: var(--panel-2); color: var(--text); border-color: var(--border); }
.chip-btn.active, .chip-btn.active:hover:not(:disabled) { background: var(--text); color: var(--bg); border-color: var(--text); }

.fach-card { position: relative; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
             box-shadow: var(--shadow); padding: 16px 18px 16px 26px; margin-bottom: 10px; display: grid; gap: 4px; }
.fach-card::before { content: ""; position: absolute; left: -1px; top: -1px; bottom: -1px; width: 7px;
                     background: var(--reg, var(--border)); border-radius: var(--radius) 0 0 var(--radius); }
.fach-card.loose { padding-left: 18px; }
.fach-card.loose::before { display: none; }
.fach-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(70px, 140px) auto auto; gap: 18px; align-items: center; }
.fach-title h3 { margin: 0; font-size: 21px; line-height: 1.25; overflow-wrap: anywhere; }
.fach-title h3 a { color: var(--text); text-decoration: none; }
.fach-title h3 a:hover { color: var(--accent); }
.fach-row .row-actions { flex-wrap: nowrap; align-items: center; }
.chevron { display: inline-block; width: 7px; height: 7px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
           transform: rotate(45deg) translateY(-2px); margin-left: 4px; transition: transform .2s; }
[aria-expanded="true"] .chevron { transform: rotate(-135deg) translate(-1px, -1px); }
.deck-lines { display: grid; margin-top: 10px; border-top: 1px dashed var(--border); }
.fach-card.loose .deck-lines { border-top: 0; margin-top: 0; }
.deck-line { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 16px; align-items: center; padding: 10px 0;
             border-bottom: 1px solid color-mix(in srgb, var(--border) 60%, transparent); }
.deck-line:last-child { border-bottom: 0; padding-bottom: 0; }
.deck-name { overflow-wrap: anywhere; }
.deck-name a { color: var(--text); text-decoration: none; font-weight: 500; }
.deck-name a:hover { color: var(--accent); }
.deck-line .row-actions { flex-wrap: nowrap; }
@media (max-width: 720px) {
  .fach-row { grid-template-columns: minmax(0, 1fr) auto; gap: 10px 14px; }
  .fach-progress { grid-column: 1 / -1; order: 3; }
  .fach-row > .counters { order: 2; }
  .fach-row .row-actions { grid-column: 1 / -1; order: 4; flex-wrap: wrap; }
  .deck-line { grid-template-columns: minmax(0, 1fr) auto; }
  .deck-line .row-actions { grid-column: 1 / -1; }
  .chapter-num { font-size: 38px; }
}

/* Dialoge mit Formular */
.dialog-form { display: grid; gap: 14px; }
.dialog-form h3 { margin: 0; font-size: 22px; }
.dialog-form select, .dialog-form input[type=text] { width: 100%; }

/* Fächer auf der Startseite tragen ihre Registerfarbe */
.subject-card.register { position: relative; padding-left: 26px; }
.subject-card.register::before { content: ""; position: absolute; left: -1px; top: -1px; bottom: -1px; width: 7px;
                                 background: var(--reg); border-radius: var(--radius) 0 0 var(--radius); }
.subject-top h3 { font-size: 20px; }
.fach-hero { border-left: 7px solid var(--reg); padding: 2px 0 2px 16px; margin: 18px 0 22px; }
.fach-hero h1 { margin: 0; }
.today-main .big { font-family: var(--serif); font-size: 26px; font-weight: 600; line-height: 1.25; }
.ring-label strong { font-family: var(--serif); font-weight: 600; }
.subject-card .counters { justify-self: start; }
.greeting h1 { font-size: 44px; }

/* Hell/Dunkel-Schalter in der Kopfleiste */
.theme-toggle { flex: none; width: 36px; height: 36px; padding: 0; border-radius: 99px; background: transparent;
                color: var(--muted); border: 1px solid var(--border); }
.theme-toggle:hover:not(:disabled) { background: var(--panel-2); color: var(--text); border-color: var(--border); }
.theme-toggle svg { display: block; }
@media (max-width: 640px) { .theme-toggle { margin-left: auto; order: 1; } nav.top { order: 2; } }

/* ---------- Kreuzen-Startseite (Struktur angelehnt an via medici, im Lernjournal-Stil) */
main.wide { max-width: 1120px; }
.quiz-layout { display: grid; grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr); gap: 22px; align-items: start; }
.quiz-layout h2, .list-panel h2 { margin-top: 26px; }
.tile-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.tile { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; min-height: 136px;
        padding: 18px 12px; background: var(--panel); color: var(--text); border: 1px solid var(--border);
        border-radius: var(--radius); box-shadow: var(--shadow); text-align: center; font-weight: 500;
        transition: border-color .15s, transform .15s, box-shadow .15s; }
.tile svg { color: var(--accent); margin-bottom: 4px; }
.tile:hover:not(:disabled) { background: var(--panel); color: var(--text); border-color: var(--accent);
                             box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.tile:disabled { opacity: .5; }
.tile-title { font-family: var(--serif); font-size: 18px; font-weight: 600; line-height: 1.2; }
.tile-text { font-size: 13px; color: var(--muted); font-weight: 400; }

/* Statistik als „Tintenfeld“: dunkel auf hell bzw. hell auf dunkel */
.ink-panel { background: var(--text); color: var(--bg); border-radius: var(--radius); box-shadow: var(--shadow-lg);
             display: grid; overflow: hidden; }
.ink-stat { display: grid; gap: 2px; padding: 18px 22px; }
.ink-stat + .ink-stat { border-top: 1px solid color-mix(in srgb, var(--bg) 18%, transparent); }
.ink-stat .eyebrow { color: color-mix(in srgb, var(--bg) 65%, transparent); }
.ink-stat strong { font-family: var(--serif); font-size: 34px; font-weight: 600; line-height: 1.1; }
.ink-stat > span:last-child:not(.eyebrow) { font-size: 13px; color: color-mix(in srgb, var(--bg) 70%, transparent); }

.session-lists { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 22px; align-items: start; }
.list-panel { display: grid; gap: 10px; align-content: start; }
.list-panel h2 { margin-bottom: 4px; }
.empty-note { background: var(--panel); border: 1px dashed var(--border); border-radius: var(--radius); padding: 22px; text-align: center; margin: 0; }
.session-card { position: relative; overflow: hidden; display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 16px;
                align-items: center; padding: 14px 40px 18px 18px; background: var(--panel); border: 1px solid var(--border);
                border-radius: var(--radius); box-shadow: var(--shadow); transition: border-color .15s, box-shadow .15s; }
.session-card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); box-shadow: var(--shadow-lg); }
.session-main { display: grid; gap: 2px; justify-items: start; min-width: 0; }
.session-title { font-family: var(--serif); font-size: 19px; font-weight: 600; color: var(--text); text-decoration: none;
                 overflow-wrap: anywhere; line-height: 1.25; }
.session-title::after { content: ""; position: absolute; inset: 0; }  /* ganze Karte klickbar */
.session-title:hover { color: var(--accent); }
.badge.mode-learn { border-color: color-mix(in srgb, var(--accent) 45%, transparent); color: var(--accent); }
.badge.mode-exam { background: var(--text); color: var(--bg); border-color: var(--text); }
.session-count { display: grid; gap: 6px; justify-items: end; font-size: 14px; font-variant-numeric: tabular-nums; }
.result-chips { display: flex; gap: 4px; }
.result-chips span { padding: 1px 9px; border-radius: 99px; font-size: 13px; font-weight: 600; }
.chip-right { background: color-mix(in srgb, var(--q-right) 16%, transparent); color: color-mix(in srgb, var(--q-right) 75%, var(--text)); }
.chip-wrong { background: color-mix(in srgb, var(--q-wrong) 18%, transparent); color: color-mix(in srgb, var(--q-wrong) 70%, var(--text)); }
.session-score { display: grid; justify-items: center; min-width: 64px; }
.session-score strong { font-family: var(--serif); font-size: 26px; font-weight: 600; line-height: 1.1; }
.session-delete { position: absolute; top: 6px; right: 6px; z-index: 1; width: 28px; height: 28px; padding: 0; font-size: 18px; line-height: 1; }
.session-bar { position: absolute; left: 0; right: 0; bottom: 0; height: 4px; display: flex; background: var(--panel-2); }
.session-bar .seg.right { background: var(--q-right); } .session-bar .seg.wrong { background: var(--q-wrong); }
.session-bar .seg.pending { background: color-mix(in srgb, var(--accent) 55%, transparent); }
.field-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field-pair input { width: 100%; }
.quick-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(70px, 140px) auto; gap: 18px; align-items: center; }
.quick-row .row-actions { justify-content: flex-end; }
@media (max-width: 860px) {
  .quiz-layout, .session-lists { grid-template-columns: 1fr; gap: 0; }
  .tile-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ink-panel { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ink-stat + .ink-stat { border-top: 0; border-left: 1px solid color-mix(in srgb, var(--bg) 18%, transparent); }
  .ink-stat { padding: 14px; } .ink-stat strong { font-size: 24px; }
}
@media (max-width: 560px) {
  .session-card { grid-template-columns: minmax(0, 1fr) auto; }
  .session-count { grid-column: 1; grid-row: 2; justify-items: start; }
  .session-score { grid-column: 2; grid-row: 1 / span 2; }
  .quick-row { grid-template-columns: 1fr; gap: 10px; }
  .quick-row .row-actions { justify-content: flex-start; }
  .tile { min-height: 118px; }
}

/* Themen innerhalb eines Fachs */
.thema-group { display: grid; padding: 4px 0 6px 14px; border-left: 2px solid color-mix(in srgb, var(--reg, var(--border)) 45%, transparent);
               margin: 10px 0 2px; }
.thema-group .deck-line { padding-left: 4px; }
.thema-head { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 16px; align-items: center; padding: 4px 0 6px; }
.thema-name { font-family: var(--serif); font-size: 17px; font-weight: 600; }
.thema-head .row-actions { flex-wrap: nowrap; }
.thema-rest { margin: 4px 0 2px; }
.add-topic { margin-top: 8px; }
@media (max-width: 720px) {
  .thema-head { grid-template-columns: minmax(0, 1fr) auto; }
  .thema-head .row-actions { grid-column: 1 / -1; }
}
.fach-card.topic-card { margin-left: 28px; padding-top: 12px; padding-bottom: 12px; }
.fach-card.topic-card::before { opacity: .45; }
.fach-card.topic-card h3 { font-size: 17px; }
@media (max-width: 560px) { .fach-card.topic-card { margin-left: 14px; } }
.thema-group.loose-topic { border-left-style: dashed; }

/* Vorlesungen per Maus in Fächer/Themen ziehen */
.deck-line { position: relative; padding-left: 18px; }
.deck-line[draggable="true"] { cursor: grab; }
.deck-line[draggable="true"]:active { cursor: grabbing; }
.drag-handle { position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 9px; height: 16px; color: var(--muted);
               background-image: radial-gradient(currentColor 1.1px, transparent 1.3px); background-size: 4.5px 5.33px;
               opacity: .35; transition: opacity .15s; }
.deck-line:hover .drag-handle { opacity: .9; }
.deck-line.dragging { opacity: .4; }
.drop-over { outline: 2px dashed var(--accent); outline-offset: 3px;
             background-color: color-mix(in srgb, var(--accent-soft) 55%, transparent); }
.thema-group.drop-over { border-radius: 10px; }
.drop-hint { margin: 2px 0 0; font-size: 13px; }
.just-moved { animation: just-moved 1.8s ease-out; border-radius: 8px; }
@keyframes just-moved { from { background-color: var(--accent-soft); } to { background-color: transparent; } }
@media (hover: none) { .drag-handle { display: none; } .deck-line { padding-left: 0; } }
.thema-toggle { display: inline-flex; align-items: center; gap: 8px; padding: 0; background: none; border: 0; color: var(--text);
                font: inherit; text-align: left; cursor: pointer; }
.thema-toggle:hover:not(:disabled) { background: none; border: 0; color: var(--accent); }
.thema-toggle .chevron { margin-left: 0; flex: none; transform: rotate(-45deg); }
.thema-toggle[aria-expanded="true"] .chevron { transform: rotate(45deg) translate(-2px, -2px); }
.thema-lines { display: grid; }
.key-backup-notice { margin-bottom: 22px; }
.key-code { font-size: 16px; letter-spacing: 1px; background: var(--panel); border: 1px solid var(--border); padding: 4px 10px;
            border-radius: 8px; }

/* ---------- Kreuzen-Sitzung im via-medici-Stil: Kästchen, Fragenleiste, Uhr mit Pause */
.question-meta { display: flex; gap: 10px; align-items: center; margin-bottom: 4px; }
.answer-list { display: grid; margin: 14px -20px -20px; border-top: 1px solid var(--border); }
.answer-row { display: flex; gap: 14px; align-items: center; width: 100%; text-align: left; padding: 14px 20px;
              background: transparent; color: var(--text); border: 0; border-bottom: 1px solid var(--border); border-radius: 0;
              font: inherit; font-weight: 400; font-size: 16px; cursor: default; transition: background .12s; }
.answer-row:last-child { border-bottom: 0; border-radius: 0 0 var(--radius) var(--radius); }
button.answer-row { cursor: pointer; }
button.answer-row:hover:not(:disabled) { background: var(--panel-2); color: var(--text); border-color: var(--border); }
button.answer-row:active:not(:disabled) { transform: none; }
.answer-row .box { flex: none; width: 28px; height: 28px; border: 1.5px solid color-mix(in srgb, var(--accent) 55%, var(--border));
                   border-radius: 5px; display: grid; place-items: center; font-weight: 700; font-size: 16px; background: var(--panel); }
.answer-row .letter { color: var(--muted); min-width: 30px; font-variant-numeric: tabular-nums; }
.answer-row .answer-text { flex: 1; }
.answer-tag { display: block; margin-top: 2px; font-size: 12px; font-weight: 600; color: var(--ok); }
.answer-row.selected .box { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
/* richtig = Grün (zusätzlich ✓ und „richtige Antwort“), falsch = Orange (✗) */
.answer-row.correct { background: color-mix(in srgb, var(--ok) 14%, transparent); }
.answer-row.correct .box { border-color: var(--ok); color: var(--ok); }
.answer-row.wrong { background: color-mix(in srgb, var(--q-wrong) 14%, transparent); }
.answer-row.wrong .box { border-color: var(--q-wrong); color: var(--q-wrong); }
.answer-row.missed { background: color-mix(in srgb, var(--ok) 9%, transparent); }
.answer-row.missed .box { border-color: var(--ok); border-style: dashed; }
.exam-question .explanation { margin-top: 30px; }
.exam-grid button.right { border-color: var(--ok); color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, var(--panel)); }
.exam-grid button.wrong { border-color: var(--q-wrong); color: color-mix(in srgb, var(--q-wrong) 70%, var(--text));
                          background: color-mix(in srgb, var(--q-wrong) 12%, var(--panel)); }
.exam-grid button:hover:not(:disabled) { background: var(--panel-2); color: var(--text); }
.clock-box { display: inline-flex; gap: 8px; align-items: center; font-variant-numeric: tabular-nums; }
.clock-box strong { min-width: 44px; }
.seg-toggle { display: inline-flex; border: 1px solid var(--border); border-radius: 99px; overflow: hidden; }
.seg-toggle button { background: transparent; color: var(--muted); border: 0; border-radius: 0; padding: 4px 12px; font-size: 13px; font-weight: 500; }
.seg-toggle button:hover:not(:disabled) { background: var(--panel-2); color: var(--text); border: 0; }
.seg-toggle button.active, .seg-toggle button.active:hover:not(:disabled) { background: var(--text); color: var(--bg); }
.key-hint { text-align: center; font-size: 12px; margin-top: 10px; }
.paused-panel { text-align: center; padding: 48px 20px; display: grid; gap: 6px; justify-items: center; }
.paused-panel h2 { margin: 0; }
@media (max-width: 600px) {
  .answer-list { margin: 12px -20px -20px; }
  .answer-row { padding: 12px 16px; gap: 10px; font-size: 15px; }
  .answer-row .letter { min-width: 24px; }
}

/* ---------- Lerneinstellungen: Zeiten der Bewertungsknöpfe */
.settings-form h4 { margin: 18px 0 8px; }
.settings-form h4:first-child { margin-top: 6px; }
.settings-form .settings-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); margin: 0; }
.setting { display: grid; gap: 4px; font-size: 14px; align-content: start; }
.setting-label { font-weight: 600; }
.setting-input { display: flex; gap: 8px; align-items: center; }
.setting-input input { width: 96px; max-width: none; }
.setting-input input[type=text] { width: 120px; }
.setting-hint { font-size: 12px; }
.rate-preview { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
span.rate { display: grid; justify-items: center; min-width: 96px; padding: 8px 12px; border: 1px solid var(--border);
            border-radius: var(--radius-sm); background: var(--panel); font-weight: 600; font-size: 14px;
            box-shadow: var(--shadow), inset 0 -3px 0 var(--rate-color); }
.app-dialog.wide-dialog { width: min(720px, calc(100vw - 32px)); max-height: calc(100vh - 48px); overflow: auto; }

/* ---------- Individuelle Sitzung: Auswahlbaum (Semester › Fach › Thema › Vorlesung) */
.pick-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 18px; align-items: start; }
.pick-panel { padding: 0; overflow: hidden; }
.pick-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px 18px;
             border-bottom: 1px solid var(--border); background: var(--panel-2); }
.pick-tree { display: grid; }
.tree-row { display: grid; grid-template-columns: 28px minmax(0, 1fr) auto; gap: 6px; align-items: center;
            padding: 9px 18px 9px calc(10px + var(--indent, 0px)); border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
            position: relative; }
.tree-row:hover { background: color-mix(in srgb, var(--panel-2) 60%, transparent); }
.tree-row.depth-1 { --indent: 22px; } .tree-row.depth-2 { --indent: 44px; } .tree-row.depth-3 { --indent: 66px; }
.tree-row.fach::before { content: ""; position: absolute; left: calc(var(--indent) + 2px); top: 10px; bottom: 10px; width: 4px;
                         border-radius: 2px; background: var(--reg); }
.tree-toggle { width: 26px; height: 26px; padding: 0; background: none; border: 0; color: var(--muted); border-radius: 6px; }
.tree-toggle:hover:not(:disabled) { background: var(--panel-2); color: var(--text); border: 0; }
.tree-toggle .chevron { margin: 0; transform: rotate(-45deg); }
.tree-toggle[aria-expanded="true"] .chevron { transform: rotate(45deg) translate(-2px, -2px); }
.tree-spacer { width: 26px; }
.tree-label { display: flex; align-items: center; gap: 10px; min-width: 0; cursor: pointer; }
.tree-label input { flex: none; width: 18px; height: 18px; }
.tree-name { overflow-wrap: anywhere; }
.tree-row.semester { background: var(--panel-2); }
.tree-row.semester .tree-name { font-weight: 600; letter-spacing: .08em; text-transform: uppercase; font-size: 12px; color: var(--muted); }
.tree-num { font-family: var(--serif); font-size: 26px; line-height: 1; color: var(--accent); }
.tree-row.fach .tree-name { font-family: var(--serif); font-size: 18px; font-weight: 600; }
.tree-row.thema .tree-name { font-weight: 600; }
.tree-meta { font-size: 12px; white-space: nowrap; }
.tree-count { font-size: 13px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.pick-side { position: sticky; top: 76px; display: grid; gap: 16px; }
.pick-summary { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 8px; }
.pick-total { font-family: var(--serif); font-size: 40px; line-height: 1; }
.pick-side .seg-toggle { flex-wrap: wrap; border-radius: 12px; }
.pick-side input[type=number] { width: 90px; }
.pick-start { width: 100%; padding: 12px; font-size: 16px; }
@media (max-width: 820px) {
  .pick-layout { grid-template-columns: 1fr; }
  .pick-side { position: static; }
  .tree-meta { display: none; }
}

/* ---------- Kreuz-Statistik nach Semester › Fach › Thema */
.ink-link { display: block; padding: 14px 22px; color: var(--bg); font-weight: 600; font-size: 14px; text-decoration: none;
            border-top: 1px solid color-mix(in srgb, var(--bg) 18%, transparent); }
.ink-link:hover { color: var(--bg); background: color-mix(in srgb, var(--bg) 10%, transparent); }
.stats-overview { margin-bottom: 18px; }
.stats-overview .stat-tile { display: grid; gap: 2px; }
.stat-sub { font-size: 12px; }
.pick-head .legend { margin: 0; font-size: 12px; }
.stats-row { grid-template-columns: 28px minmax(0, 1.3fr) minmax(120px, 1fr) 76px 76px 150px; gap: 12px; }
.stats-progress { display: grid; gap: 4px; font-size: 12px; }
.stats-num { display: grid; justify-items: end; font-family: var(--serif); font-size: 20px; font-weight: 600; line-height: 1.1;
             font-variant-numeric: tabular-nums; }
.stats-num small { font-family: -apple-system, BlinkMacSystemFont, sans-serif; font-size: 11px; font-weight: 500; color: var(--muted); }
.stats-row > button, .stats-row > span:last-child { justify-self: end; }
@media (max-width: 820px) {
  .stats-row { grid-template-columns: 28px minmax(0, 1fr) 64px 64px; }
  .stats-progress { grid-column: 2 / -1; grid-row: 2; }
  .stats-row > :last-child { grid-column: 2 / -1; justify-self: start; }
  .stats-overview { grid-template-columns: 1fr; }
}

/* ---------- Anmelden, Konto, Admin */
main.auth-page { max-width: 520px; }
.auth-head { display: flex; align-items: center; gap: 14px; margin-top: 30px; }
.auth-head svg { color: var(--accent); flex: none; }
.auth-head h1 { margin: 0; font-size: clamp(28px, 9vw, 38px); }
.auth-tabs { margin-bottom: 16px; width: 100%; }
.auth-tabs button { flex: 1; }
.dialog-form input[type=password] { width: 100%; }
.konto-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin-top: 16px; }
.budget-box { display: grid; gap: 8px; }
.budget-bar { height: 10px; border-radius: 99px; background: var(--panel-2); overflow: hidden; }
.budget-bar > div { height: 100%; background: var(--accent); border-radius: 99px; }
.admin-list { padding: 4px 20px; }
.admin-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 16px; align-items: center; padding: 12px 0;
             border-bottom: 1px solid var(--border); }
.admin-row:last-child { border-bottom: 0; }
.admin-cost { display: grid; justify-items: end; font-size: 13px; }
.admin-cost strong { font-family: var(--serif); font-size: 18px; }
.invite-link { display: block; padding: 10px 12px; background: var(--panel-2); border-radius: 8px; overflow-wrap: anywhere; font-size: 13px; }
@media (max-width: 640px) { .admin-row { grid-template-columns: 1fr; gap: 6px; } .admin-cost { justify-items: start; } }
main.legal { max-width: 720px; }
main.legal h1 { margin-top: 14px; }
main.legal li { margin-bottom: 6px; }

/* ---------- Feed-Modus (TikTok-artig): eine Karte pro Bildschirm, wischen statt klicken */
body.feed-open { overflow: hidden; }
.feed { position: fixed; inset: 0; z-index: 40; display: grid; grid-template-rows: auto minmax(0, 1fr);
        background-color: var(--bg); background-image: radial-gradient(var(--dots) 1px, transparent 1.2px); background-size: 22px 22px;
        padding: env(safe-area-inset-top) 0 env(safe-area-inset-bottom); }
.feed-top { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-bottom: 1px solid var(--border);
            background: color-mix(in srgb, var(--bar, var(--bg)) 92%, transparent); }
.feed-title { flex: 1; min-width: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 2px 12px; font-size: 14px; }
.feed-title strong { font-family: var(--serif); font-size: 16px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }
.feed-title .counters { font-size: 13px; grid-template-columns: repeat(3, 34px); }
.feed-top .goal-pill .bar { width: 48px; }
.feed-icon { width: 40px; height: 40px; padding: 0; border-radius: 99px; flex: none; font-size: 22px; font-weight: 400;
             background: var(--panel); color: var(--text); border: 1px solid var(--border); box-shadow: var(--shadow); }
.feed-icon:hover:not(:disabled) { background: var(--panel-2); color: var(--text); border-color: var(--border); }
.feed-stage { position: relative; overflow: hidden; touch-action: pan-x; }
.feed-card { position: absolute; inset: 14px 78px 14px 14px; display: grid; grid-template-rows: auto minmax(0, 1fr) auto;
             gap: 10px; padding: 18px 18px 14px; background: var(--panel); border: 1px solid var(--border); border-radius: 22px;
             box-shadow: var(--shadow-lg); transition: transform .3s cubic-bezier(.2, .8, .2, 1), opacity .3s; cursor: pointer;
             will-change: transform; contain: layout paint; }
.feed-card.feed-old { pointer-events: none; }
.feed-card.revealed { cursor: default; }
.feed-meta { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: 12px; }
.feed-content { overflow-y: auto; overscroll-behavior: contain; display: grid; gap: 14px; align-content: center;
                font-size: 22px; line-height: 1.45; text-align: center; padding: 4px 2px; }
.feed-content .card-face { font-size: inherit; }
.feed-content .card-extra { font-size: 17px; }
.feed-content .card-slide { max-width: 100%; max-height: 38vh; object-fit: contain; }
.feed-content .feedback { justify-content: center; }
.feed-content hr { width: 60%; border: 0; border-top: 1px solid var(--border); }
.feed-hint { text-align: center; font-size: 12px; }
.feed-card.dragging { transition: none; box-shadow: var(--shadow); }  /* beim Ziehen leichter Schatten: weniger Rechenlast */
.feed-card.leaving-up { animation: feed-out-up .3s cubic-bezier(.4, 0, .2, 1) forwards; }
.feed-card.leaving-down { animation: feed-out-down .3s cubic-bezier(.4, 0, .2, 1) forwards; }
@keyframes feed-out-up { to { transform: translate3d(0, -105%, 0); opacity: 0; } }
@keyframes feed-out-down { to { transform: translate3d(0, 105%, 0); opacity: 0; } }
.feed-card.entering-up { animation: feed-in-up .34s cubic-bezier(.2, .8, .2, 1); }
.feed-card.entering-down { animation: feed-in-down .34s cubic-bezier(.2, .8, .2, 1); }
@keyframes feed-in-up { from { transform: translate3d(0, 85%, 0); } to { transform: translate3d(0, 0, 0); } }
@keyframes feed-in-down { from { transform: translate3d(0, -85%, 0); } to { transform: translate3d(0, 0, 0); } }
.feed-side { position: absolute; right: 10px; bottom: 18px; display: grid; gap: 10px; justify-items: center; transition: opacity .2s; }
.feed-side.inactive .feed-rate { opacity: .35; pointer-events: none; }
.feed-rate { width: 58px; min-height: 58px; padding: 6px 2px; border-radius: 16px; display: grid; gap: 1px; justify-items: center;
             background: var(--panel); color: var(--text); border: 1px solid var(--border);
             box-shadow: var(--shadow), inset 0 -3px 0 var(--rate-color); font-weight: 600; font-size: 12px; }
.feed-rate:hover:not(:disabled) { background: var(--panel-2); color: var(--text); border-color: var(--border); }
.feed-rate-time { font-size: 11px; font-weight: 500; color: var(--muted); }
.feed-done { display: grid; align-content: center; justify-items: center; text-align: center; cursor: default; inset: 14px; }
@media (min-width: 760px) {
  /* zentriert ohne transform – so bleibt transform frei für das Wischen */
  .feed-card { inset: 20px 0; margin-inline: auto; width: min(620px, calc(100% - 200px)); }
  .feed-side { right: calc(50% - min(310px, (100% - 200px) / 2) - 84px); bottom: 24px; }
  .feed-done { inset: 20px 0; }
}