:root {
  --bg: #f4f1ec;
  --card: #ffffff;
  --text: #2a2622;
  --muted: #8a8378;
  --accent: #046a38;        /* Portugal-Grün */
  --accent2: #c8102e;       /* Portugal-Rot */
  --gold: #f5b301;
  --ok: #2e8b57;
  --err: #c8102e;
  --border: #e2ddd4;
  --shadow: 0 2px 12px rgba(0,0,0,.07);
  --radius: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1a17;
    --card: #262320;
    --text: #ede8e0;
    --muted: #9a938a;
    --border: #38342f;
    --shadow: 0 2px 12px rgba(0,0,0,.35);
  }
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--text);
  min-height: 100vh; display: flex; flex-direction: column;
}
header {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--bg); z-index: 10;
}
header .flag { font-size: 22px; }
header h1 { font-size: 18px; font-weight: 700; flex: 1; }
header button {
  background: none; border: 1px solid var(--border); border-radius: 10px;
  color: var(--text); padding: 6px 12px; font-size: 14px; cursor: pointer;
}
main { flex: 1; width: 100%; max-width: 640px; margin: 0 auto; padding: 18px; padding-bottom: 90px; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mode-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 16px; cursor: pointer; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 6px; transition: transform .1s;
}
.mode-card:active { transform: scale(.97); }
.mode-card .emoji { font-size: 28px; }
.mode-card .title { font-weight: 700; font-size: 15px; }
.mode-card .sub { font-size: 12.5px; color: var(--muted); }
.mode-card .due-badge {
  align-self: flex-start; background: var(--accent2); color: #fff;
  font-size: 11px; padding: 2px 8px; border-radius: 999px; font-weight: 600;
}

.stats-bar {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; margin-bottom: 16px; box-shadow: var(--shadow);
  display: flex; justify-content: space-between; text-align: center;
}
.stats-bar .stat .num { font-size: 20px; font-weight: 800; color: var(--accent); }
.stats-bar .stat .lbl { font-size: 11px; color: var(--muted); }

.section-title { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 18px 0 10px; }

/* Übungsansicht */
.exercise { display: flex; flex-direction: column; gap: 14px; }
.progress-line { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.progress-track { flex: 1; height: 6px; background: var(--border); border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--accent); border-radius: 999px; transition: width .3s; }

.card-box {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 28px 22px; min-height: 180px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  text-align: center;
}
.card-box .prompt { font-size: 24px; font-weight: 700; line-height: 1.35; }
.card-box .hint { font-size: 13px; color: var(--muted); }
.card-box .answer { font-size: 20px; font-weight: 600; color: var(--accent); line-height: 1.35; }
.card-box .note { font-size: 13px; color: var(--muted); font-style: italic; margin-top: 4px; }
.card-box .meta { font-size: 11.5px; color: var(--muted); }
.card-box.correct { border-color: var(--ok); }
.card-box.wrong { border-color: var(--err); }

.btn-row { display: flex; gap: 10px; }
.btn {
  flex: 1; padding: 14px; border-radius: 12px; border: none; font-size: 15px;
  font-weight: 700; cursor: pointer; color: #fff; background: var(--accent);
  transition: filter .15s;
}
.btn:active { filter: brightness(.9); }
.btn.secondary { background: var(--card); color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--err); }
.btn.warn { background: var(--gold); color: #2a2622; }
.btn.ok { background: var(--ok); }
.btn:disabled { opacity: .45; cursor: default; }

.options { display: flex; flex-direction: column; gap: 10px; }
.option {
  background: var(--card); border: 1.5px solid var(--border); border-radius: 12px;
  padding: 14px 16px; font-size: 16px; cursor: pointer; text-align: left; color: var(--text);
  transition: border-color .15s, background .15s;
}
.option.sel-correct { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, var(--card)); }
.option.sel-wrong { border-color: var(--err); background: color-mix(in srgb, var(--err) 12%, var(--card)); }
.option:disabled { cursor: default; }

input.text-answer {
  width: 100%; padding: 14px 16px; font-size: 17px; border-radius: 12px;
  border: 1.5px solid var(--border); background: var(--card); color: var(--text); outline: none;
}
input.text-answer:focus { border-color: var(--accent); }
input.text-answer.correct { border-color: var(--ok); }
input.text-answer.wrong { border-color: var(--err); }

.feedback { text-align: center; font-size: 15px; font-weight: 600; min-height: 22px; }
.feedback.ok { color: var(--ok); }
.feedback.err { color: var(--err); }

/* Satzbau */
.chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; min-height: 48px;
  padding: 12px; border: 1.5px dashed var(--border); border-radius: 12px; }
.chips.target { background: var(--card); }
.chip {
  background: var(--card); border: 1.5px solid var(--accent); color: var(--text);
  border-radius: 999px; padding: 8px 14px; font-size: 15px; cursor: pointer; font-weight: 600;
}
.chip.placed { border-color: var(--border); }

/* Fortschritt */
.prog-list { display: flex; flex-direction: column; gap: 10px; }
.prog-row { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; }
.prog-row .head { display: flex; justify-content: space-between; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.prog-row .head span:last-child { color: var(--muted); font-weight: 400; font-size: 12.5px; }
.bar { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; display: flex; }
.bar .seg-learned { background: var(--accent); height: 100%; }
.bar .seg-learning { background: var(--gold); height: 100%; }

/* Referenz-Tabellen */
table.conj { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 12px; overflow: hidden; font-size: 14px; }
table.conj th, table.conj td { padding: 8px 12px; border-bottom: 1px solid var(--border); text-align: left; }
table.conj th { background: color-mix(in srgb, var(--accent) 10%, var(--card)); font-size: 13px; }
.conj-block { margin-bottom: 16px; }
.conj-block h3 { font-size: 14px; margin-bottom: 6px; }

.filter-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.filter-chip {
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  border-radius: 999px; padding: 6px 12px; font-size: 13px; cursor: pointer;
}
.filter-chip.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.done-box { text-align: center; padding: 40px 20px; }
.done-box .big { font-size: 44px; }
.done-box h2 { margin: 10px 0 6px; }
.done-box p { color: var(--muted); font-size: 14px; }

.footer-note { text-align: center; font-size: 11.5px; color: var(--muted); margin-top: 24px; }