:root {
  --bg-1: #f1f5f9;
  --bg-2: #e2e8f0;
  --bg-3: #1e3a8a;
  --ink: #0f172a;
  --ink-soft: #64748b;
  --ink-on-dark: #f1f5f9;
  --paper: #ffffff;
  --paper-alt: #f1f5f9;
  --line: #cbd5e1;
  --border-strong: #94a3b8;
  --line-dark: #2563eb;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --accent-dark: #b45309;
  --accent-2: #0ea5e9;
  --ok: #10b981;
  --ok-bg: rgba(16, 185, 129, 0.14);
  --warn: #e11d48;
  --warn-bg: rgba(225, 29, 72, 0.12);
  --pending: #f59e0b;
  --pending-bg: rgba(245, 158, 11, 0.14);
  --star: #d97706;
  font-size: 20px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: linear-gradient(160deg, var(--bg-1) 0%, var(--bg-2) 60%, #cbd5e1 100%);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-user-select: none;
  user-select: none;
}

h1, h2, h3 { margin: 0; }

h1, h2, .btn, .action-btn, .format-card-title,
.quiz-question, .luecken-sentence, .dragdrop-instruction {
  font-weight: 800;
}

.count-number, .points-popup-value, .feedback, .domino-tile, .domino-slot, .dd-tile, .dd-tile-ghost {
  font-family: ui-monospace, "Cascadia Code", "Roboto Mono", Consolas, monospace;
}

/* Die Noten-/Pausen-SVGs in content.js sind fest dunkel (#1a1a1a) gefüllt -
   auf dem jetzt hellen Kartengrund von Natur aus gut lesbar, kein
   Filtertrick mehr nötig (anders als in der ersten, dunklen Testversion). */

/* ---------- Toolbar ---------- */

.toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px;
  background: var(--bg-3);
  color: var(--ink-on-dark);
  position: sticky;
  top: 0;
  z-index: 20;
  flex-wrap: wrap;
  border-bottom: 4px solid var(--line-dark);
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.35);
}

.toolbar h1 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-light);
  white-space: nowrap;
}

/* Führt immer zurück zur App-Übersicht (eigenes Repo) - bewusst getrennt
   vom In-App-"Zurück"-Knopf (der nur zum vorherigen Bildschirm INNERHALB
   der App führt) und deshalb ganz links, dauerhaft sichtbar. */
.toolbar-home-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  line-height: 1.1;
  text-decoration: none;
  color: var(--accent-light);
  padding: 4px 10px;
  border-radius: 10px;
  flex: none;
  margin-left: auto;
}
.toolbar-home-link:hover { background: rgba(255, 255, 255, 0.1); }
.toolbar-home-arrow { font-size: 1.3rem; }
.toolbar-home-label { font-size: 0.62rem; font-weight: 700; margin-top: 1px; }

.toolbar-progress {
  display: flex;
  gap: 16px;
  font-size: 1rem;
  font-weight: 700;
  flex: 1 1 auto;
  justify-content: center;
}

/* Dunkler "Chip"-Knopf, bewusst unabhängig davon, ob er gerade in der
   dunklen Toolbar oder unten über dem hellen Seiteninhalt sitzt - so
   bleibt der Amber-auf-Dunkel-Kontrast überall gleich gut lesbar (Amber
   auf Weiß wäre zu blass). */
.btn {
  font-size: 1.05rem;
  font-weight: 700;
  padding: 10px 18px;
  border: 2px solid var(--line-dark);
  border-radius: 12px;
  background: var(--bg-3);
  color: var(--accent-light);
  cursor: pointer;
  min-height: 44px;
  transition: transform 0.12s ease, background 0.15s;
}
.btn:hover { background: #1d4ed8; }
.btn:active { transform: scale(0.96); }

main {
  padding: 0 24px 140px;
  max-width: 760px;
  margin: 0 auto;
}

/* ---------- Hub: Level-Pills ---------- */

.hub-hint {
  text-align: center;
  color: var(--ink-soft);
  font-weight: 600;
  margin: 22px 0 10px;
}

/* ---------- Hub: Format-Kacheln ---------- */

.format-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  padding: 4px 0 24px;
}

.format-card {
  --card-accent: var(--accent);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 22px 14px;
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--line);
  border-top: 6px solid var(--card-accent);
  border-radius: 20px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.15);
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.format-card:nth-child(1) { --card-accent: #d97706; }
.format-card:nth-child(2) { --card-accent: #0284c7; }
.format-card:nth-child(3) { --card-accent: #0d9488; }
.format-card:nth-child(4) { --card-accent: #e11d48; }
.format-card:nth-child(5) { --card-accent: #7c3aed; }
.format-card:nth-child(6) { --card-accent: #059669; }

.format-card:hover { transform: translateY(-4px); box-shadow: 0 14px 28px rgba(15, 23, 42, 0.22); }
.format-card:active { transform: translateY(-1px) scale(0.99); }
.format-card.is-done { background: var(--ok-bg); }

.format-card-icon { font-size: 2.2rem; line-height: 1; }
.format-card-title { font-size: 1.05rem; font-weight: 700; }

/* Drei kleine Punkte (Leicht/Mittel/Schwer) statt eines einzelnen Hakens -
   zeigt direkt auf der Kachel, welche Schwierigkeiten schon geschafft
   wurden, ohne dass man erst hineintippen muss. */
.format-card-dots { display: flex; gap: 5px; }
.format-card-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--line);
}
.format-card-dot.is-done { background: var(--ok); }

/* ---------- Zwischenseite: Schwierigkeit wählen ---------- */

.difficulty-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 420px;
  margin: 20px auto 0;
}

.difficulty-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: var(--paper);
  border: 3px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.15);
  cursor: pointer;
  font-family: inherit;
  color: var(--ink);
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.difficulty-card:hover { transform: translateY(-2px); border-color: var(--accent); }
.difficulty-card:active { transform: translateY(0) scale(0.99); }
.difficulty-card.is-suggested { border-color: var(--accent); }

.difficulty-card-title { font-size: 1.2rem; font-weight: 700; }
.difficulty-card-check { color: var(--ok); font-weight: 700; font-size: 0.9rem; }

/* ---------- Format-Bildschirm (gemeinsamer Rahmen) ---------- */

.format-title {
  text-align: center;
  margin: 20px 0 4px;
  font-size: 1.5rem;
  color: var(--accent-dark);
}
.format-hint {
  text-align: center;
  color: var(--ink-soft);
  margin: 0 0 18px;
}

.format-container { min-height: 200px; }

.feedback {
  margin: 16px auto 0;
  max-width: 480px;
  padding: 14px 20px;
  border-radius: 16px;
  text-align: center;
  font-weight: 700;
  font-size: 1.05rem;
}
.feedback[hidden] { display: none; }
.feedback-correct { background: var(--ok-bg); color: #047857; border: 2px solid var(--ok); }
.feedback-wrong { background: var(--pending-bg); color: var(--accent-dark); border: 2px solid var(--pending); }

/* ---------- Memory ---------- */

.memory-grid {
  display: grid;
  grid-template-columns: repeat(var(--memory-cols, 4), 1fr);
  max-width: 480px;
  margin: 0 auto;
  gap: 10px;
}

.memory-card {
  position: relative;
  aspect-ratio: 3 / 4;
  border: 3px solid var(--border-strong);
  border-radius: 12px;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  padding: 0;
  overflow: hidden;
}
.memory-card-back, .memory-card-front {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  text-align: center;
}
.memory-card-back {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: var(--bg-3);
  font-size: 1.8rem;
  font-weight: 700;
}
.memory-card-front { display: none; font-size: 0.8rem; background: var(--paper); color: var(--ink); }
.memory-card.is-flipped .memory-card-back { display: none; }
.memory-card.is-flipped .memory-card-front { display: flex; }
.memory-card-icon { width: 40px; height: 46px; }
.memory-card-icon svg { width: 100%; height: 100%; }
.memory-card.is-matched { border-color: var(--ok); background: var(--ok-bg); }

/* ---------- Verbinden ---------- */

.verbinden-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.verbinden-col { display: flex; flex-direction: column; gap: 10px; }

.verbinden-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 3px solid var(--border-strong);
  border-radius: 12px;
  background: var(--paper);
  color: var(--ink);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}
.verbinden-card:hover { border-color: var(--accent); }
.verbinden-card.is-selected { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.35); }
.verbinden-card.is-matched { border-color: var(--ok); background: var(--ok-bg); cursor: default; }
.verbinden-icon { width: 26px; height: 32px; flex: none; }
.verbinden-icon svg { width: 100%; height: 100%; }

.verbinden-duration { flex-direction: column; align-items: flex-start; gap: 6px; }
.verbinden-bar { height: 10px; border-radius: 5px; background: var(--accent-2); display: block; }

/* ---------- Lückentext ---------- */

.luecken-wrap { text-align: center; }
.luecken-progress { color: var(--ink-soft); font-weight: 600; margin-bottom: 10px; }
.luecken-sentence {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.5;
  margin: 0 0 20px;
}
.luecken-blank {
  display: inline-block;
  min-width: 60px;
  border-bottom: 3px dashed var(--accent);
  color: var(--accent-light);
}
.luecken-choices, .quiz-choices {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.luecken-choice, .quiz-choice {
  padding: 12px 20px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.12s ease, border-color 0.15s;
}
.luecken-choice:hover, .quiz-choice:hover { border-color: var(--accent); transform: translateY(-2px); }

/* ---------- Domino ---------- */

.domino-label { color: var(--ink-soft); font-weight: 700; margin: 14px 0 8px; }
.domino-pool, .domino-chain { display: flex; flex-wrap: wrap; gap: 8px; }
.domino-chain { min-height: 70px; }

.domino-tile {
  display: flex;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 700;
  border: 3px solid var(--border-strong);
  border-radius: 10px;
  background: var(--paper);
  color: var(--ink);
  cursor: grab;
  touch-action: none;
  padding: 8px 10px;
  gap: 6px;
  min-height: 56px;
}
.domino-tile.is-placed { cursor: pointer; touch-action: auto; }
.domino-tile-ghost { box-shadow: 0 10px 22px rgba(15, 23, 42, 0.25); }
.domino-tile-icon { width: 24px; height: 30px; flex: none; }
.domino-tile-icon svg { width: 100%; height: 100%; }
.domino-tile-count { font-size: 0.72rem; color: var(--ink-soft); }
.domino-divider { width: 2px; align-self: stretch; background: var(--line); }
.domino-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px dashed var(--line);
  border-radius: 10px;
  color: var(--ink-soft);
  min-width: 70px;
  min-height: 56px;
  padding: 4px;
}
.domino-slot.drag-over { border-color: var(--accent); background: rgba(245, 158, 11, 0.14); }
.domino-slot.is-filled { border-style: solid; border-color: var(--border-strong); padding: 0; }
.domino-slot.is-wrong { border-color: var(--warn); background: var(--warn-bg); }
.domino-hint { display: block; color: var(--ink-soft); font-weight: 400; font-size: 0.85rem; margin-top: 2px; }
.domino-tile.is-start-tile { position: relative; cursor: default; border-color: var(--accent); }
.domino-start-badge {
  position: absolute;
  top: -10px;
  left: 6px;
  background: var(--accent);
  color: var(--ink-on-dark, #fff);
  font-size: 0.62rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 6px;
  letter-spacing: 0.02em;
}

/* ---------- Quiz ---------- */

.quiz-wrap { text-align: center; }
.quiz-progress { color: var(--ink-soft); font-weight: 600; margin-bottom: 10px; }
.quiz-question { font-size: 1.25rem; font-weight: 700; margin: 0 0 20px; }

/* ---------- Drag & Drop ---------- */

.dragdrop-progress { color: var(--ink-soft); font-weight: 600; text-align: center; margin-bottom: 6px; }
.dragdrop-instruction { text-align: center; font-weight: 600; margin: 0 0 18px; }

.dragdrop-zones { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 20px; }
.dragdrop-zones-build { flex-direction: column; align-items: center; }

.dragdrop-build-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.dd-note-preview {
  width: 80px;
  height: 112px;
  flex: none;
  padding: 8px;
  border: 3px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
}
.dd-note-preview svg { width: 100%; height: 100%; display: block; }
.dragdrop-build-row .dragdrop-zones { margin-bottom: 0; }

.dd-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 110px;
  min-height: 90px;
  padding: 10px;
  border: 3px dashed var(--line);
  border-radius: 14px;
  justify-content: center;
}
.dd-zone.is-filled { border-style: solid; background: var(--ok-bg); border-color: var(--ok); }
.dd-zone.drag-over { border-color: var(--accent); background: rgba(245, 158, 11, 0.14); }
.dd-zone-label { font-size: 0.75rem; font-weight: 700; color: var(--ink-soft); }

.dd-pool { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }

.dd-tile {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border: 3px solid var(--border-strong);
  border-radius: 12px;
  background: var(--paper);
  color: var(--ink);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: grab;
  touch-action: none;
}
.dd-tile.is-placed { cursor: pointer; }
.dd-tile-icon { width: 24px; height: 30px; flex: none; }
.dd-tile-icon svg { width: 100%; height: 100%; }

.dd-tile-ghost {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border: 3px solid var(--border-strong);
  border-radius: 12px;
  background: var(--paper);
  color: var(--ink);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.25);
}

.drag-ghost {
  position: fixed;
  z-index: 999;
  pointer-events: none;
  opacity: 0.92;
  transform: translate(-50%, -50%);
}

/* ---------- Bottom-Bar / Einstellungen / Punkte-Overlay ---------- */

.bottom-bar {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 12px;
}

.action-btn {
  padding: 16px 36px;
  border: 2px solid var(--ok);
  border-radius: 999px;
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, #34d399 0%, var(--ok) 100%);
  box-shadow: 0 10px 22px rgba(16, 185, 129, 0.45);
  cursor: pointer;
  min-height: 56px;
  min-width: 180px;
  transition: transform 0.12s ease;
}
.action-btn:hover { transform: translateY(-2px); }
.action-btn:active { transform: scale(0.97); }
.action-btn[hidden] { display: none; }

.bottom-bar .btn-secondary { border-radius: 999px; box-shadow: 0 10px 22px rgba(15, 23, 42, 0.25); }

.settings-panel {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 100px;
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.28);
  padding: 18px 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px 28px;
  z-index: 25;
  max-height: 70vh;
  overflow-y: auto;
}
.settings-panel[hidden] { display: none; }

.volume-label {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
  font-size: 1rem;
  font-weight: 600;
  flex: 1 1 190px;
  max-width: 260px;
}
.volume-label input[type="range"] { width: 100%; accent-color: var(--accent); }
.reset-btn { flex: 0 0 auto; }

/* Eigene, volle Zeile unten im Einstellungen-Flyout statt zwischen den
   Reglern zu verschwinden - klar als eigener, dauerhaft erreichbarer
   Menüpunkt erkennbar (Zwei-Klick-Regel: Einstellungen -> Impressum). */
.settings-legal-link {
  flex: 1 1 100%;
  text-align: center;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.85rem;
  text-decoration: none;
}
.settings-legal-link:hover { text-decoration: underline; }

.points-popup {
  position: fixed;
  top: 32%;
  left: 50%;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 32px;
  background: linear-gradient(135deg, var(--star) 0%, var(--accent) 100%);
  color: var(--bg-3);
  border: 2px solid var(--accent-dark);
  border-radius: 999px;
  box-shadow: 0 18px 36px rgba(245, 158, 11, 0.5);
  font-size: 2rem;
  font-weight: 800;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.5);
  opacity: 0;
}
.points-popup[hidden] { display: none; }
.points-popup.is-animating { animation: pointsPopupPop 1.4s ease-out forwards; }
.points-popup-stars { font-size: 1.4rem; animation: pointsPopupSpin 1.4s ease-out; }
@keyframes pointsPopupPop {
  0% { transform: translate(-50%, -50%) scale(0.4); opacity: 0; }
  15% { transform: translate(-50%, -50%) scale(1.15); opacity: 1; }
  30% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  80% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  100% { transform: translate(-50%, -60%) scale(0.85); opacity: 0; }
}
@keyframes pointsPopupSpin {
  0% { transform: rotate(-20deg) scale(0.6); }
  30% { transform: rotate(20deg) scale(1.2); }
  60% { transform: rotate(-8deg) scale(1); }
  100% { transform: rotate(0deg) scale(1); }
}

/* ---------- Responsive ---------- */

@media (max-width: 480px) {
  .toolbar { justify-content: center; }
  .verbinden-grid { grid-template-columns: 1fr; }
  .points-popup { font-size: 1.5rem; padding: 14px 22px; }
  .action-btn { min-width: 0; padding: 14px 22px; font-size: 1rem; white-space: nowrap; }
  .bottom-bar .btn-secondary { padding: 10px 14px; font-size: 0.95rem; white-space: nowrap; }
}