/* ─── CSS-Variablen & Themes ─────────────────────────────────────────── */
:root {
  --bg:          #f5f1ea;
  --bg2:         #ede6dd;
  --surface:     #faf7f2;
  --surface2:    #f5f0e8;
  --border:      #d9cfc3;
  --text:        #3a3a3a;
  --text2:       #5a5a5a;
  --text3:       #808080;
  --accent:      #4da6a0;
  --accent-bg:   #d4eae7;
  --accent-dark: #3d8a7e;
  --danger:      #be123c;
  --danger-bg:   #ffe4e6;
  --warn:        #b45309;
  --warn-bg:     #fef3c7;
  --opt-hover:   #f0e9e0;
  --opt-border:  #9ab5b0;
  --correct-bg:  #d1fae5;
  --correct-bd:  #059669;
  --wrong-bg:    #fee2e2;
  --wrong-bd:    #ef4444;
  --radius:      4px;
  --radius-sm:   4px;
  --shadow:      0 1px 3px rgba(0,0,0,0.05);
  --shadow-md:   0 2px 6px rgba(0,0,0,0.08);
  --transition:  0.12s ease;
}
[data-theme="dark"] {
  --bg:          #2a2a2a;
  --bg2:         #383838;
  --surface:     #323232;
  --surface2:    #3a3a3a;
  --border:      #505050;
  --text:        #e8e3d8;
  --text2:       #aca59a;
  --text3:       #8a8280;
  --accent:      #d9854d;
  --accent-bg:   #4a381f;
  --accent-dark: #c9733d;
  --danger:      #f87171;
  --danger-bg:   #3a1217;
  --warn:        #fbbf24;
  --warn-bg:     #2d2000;
  --opt-hover:   #424242;
  --opt-border:  #7a7a7a;
  --correct-bg:  #0d2d1f;
  --correct-bd:  #2dd4bf;
  --wrong-bg:    #2d0f0f;
  --wrong-bd:    #f87171;
  --shadow:      0 1px 3px rgba(0,0,0,0.3);
  --shadow-md:   0 2px 6px rgba(0,0,0,0.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: 'Georgia', 'Times New Roman', serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
  line-height: 1.65;
}
button { cursor: pointer; border: none; outline: none; font-family: inherit; }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ─── Header ────────────────────────────────────────────────────────── */
header {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  transition: background var(--transition);
}
.header-inner {
  max-width: 900px; margin: 0 auto; padding: 0 16px;
  display: flex; align-items: center; gap: 12px;
}
.app-title {
  font-family: Georgia, serif;
  font-size: 1.25rem;
  font-weight: normal;
  letter-spacing: 0.01em;
  color: var(--text);
  flex: 1;
}
.app-title span {
  color: var(--accent);
  font-style: italic;
}
.timer-container {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  display: none;
  font-family: 'Courier New', monospace;
}
.timer-container.warning { color: var(--warn); }
.timer-container.danger { color: var(--danger); }
.header-controls { display: flex; gap: 8px; align-items: center; }
.btn-icon {
  background: transparent;
  color: var(--text2);
  border: 1px solid var(--border);
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
  cursor: pointer;
}
.btn-icon:hover { background: var(--bg2); color: var(--text); }

/* ─── Main Container ────────────────────────────────────────────────── */
#app { max-width: 900px; margin: 0 auto; padding: 0 16px 80px; }

/* ─── Main Menu ────────────────────────────────────────────────────── */
.main-menu {
  display: none;
  text-align: center;
  padding: 60px 20px;
}
.main-menu.active { display: block; }
.main-menu h2 {
  font-size: 2rem;
  margin-bottom: 40px;
  color: var(--text);
}
.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}
.menu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 20px;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.menu-card:hover {
  background: var(--accent-bg);
  border-color: var(--accent);
  transform: translateY(-2px);
}
.menu-icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
}
.menu-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}
.menu-description {
  font-size: 0.85rem;
  color: var(--text2);
  line-height: 1.5;
}

/* ─── Quiz Container ────────────────────────────────────────────────── */
.quiz-container {
  display: none;
  padding-top: 14px;
}
.quiz-container.active { display: block; }

/* ─── Steuerleiste ─────────────────────────────────────────────────── */
.controls-bar {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  margin: 20px 0 14px;
}
.controls-bar select {
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-size: 0.82rem; padding: 7px 12px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text); cursor: pointer;
  transition: border-color var(--transition);
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239ba3b8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center;
  padding-right: 30px;
}
.controls-bar select:focus { outline: none; border-color: var(--accent); }

.btn {
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-size: 0.82rem; font-weight: 500; padding: 6px 12px;
  border-radius: var(--radius-sm); transition: all var(--transition);
  letter-spacing: 0.02em;
}
.btn-ghost {
  background: transparent; color: var(--text2);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg2); color: var(--text); }
.btn-ghost.active { background: transparent; border-color: var(--accent); color: var(--accent); }
.btn-primary {
  background: var(--accent); color: white; border: 1px solid transparent;
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-primary:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-danger {
  background: transparent; color: var(--danger);
  border: 1px solid var(--danger-bg);
}
.btn-danger:hover { background: var(--danger-bg); }
.spacer { flex: 1; }

/* ─── Back Button Area ─────────────────────────────────────────────── */
.back-button-area {
  margin-bottom: 14px;
}
.btn-back {
  color: var(--text2);
  border: 1px solid var(--border);
  background: transparent;
  font-size: 0.82rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-back:hover { background: var(--bg2); color: var(--text); }

/* ─── Fortschritt ──────────────────────────────────────────────────── */
.progress-section { margin-bottom: 20px; }
.progress-meta {
  display: flex; justify-content: space-between; align-items: center;
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-size: 0.78rem; color: var(--text3); margin-bottom: 8px;
}
.progress-meta strong { color: var(--text2); }
.progress-bar-wrap {
  height: 4px; background: var(--bg2);
  border-radius: 0; overflow: hidden; border: none;
}
.progress-bar {
  height: 100%; background: var(--accent);
  border-radius: 0; transition: width 0.3s ease;
}
.progress-stats {
  display: flex; gap: 16px; margin-top: 8px;
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-size: 0.75rem; color: var(--text3);
}
.stat { display: flex; align-items: center; gap: 5px; }
.stat-dot {
  width: 8px; height: 8px; border-radius: 50%; display: inline-block;
}
.stat-dot.correct { background: #059669; }
.stat-dot.wrong { background: #ef4444; }
.stat-dot.skipped { background: var(--border); }

/* ─── Quiz Card ────────────────────────────────────────────────────── */
.quiz-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: none;
  animation: none;
}
.question-meta {
  display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px;
}
.badge {
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; padding: 3px 8px; border-radius: 99px;
}
.badge-thema { background: var(--accent-bg); color: var(--accent); }
.badge-diff-easy { background: #d1fae5; color: #065f46; }
.badge-diff-medium { background: #fef3c7; color: #92400e; }
.badge-diff-hard { background: #fee2e2; color: #991b1b; }
[data-theme="dark"] .badge-diff-easy { background: #0d2d1f; color: #34d399; }
[data-theme="dark"] .badge-diff-medium { background: #2d2000; color: #fbbf24; }
[data-theme="dark"] .badge-diff-hard { background: #2d0f0f; color: #f87171; }
.badge-multi { background: var(--warn-bg); color: var(--warn); }

.question-text {
  font-size: 1.05rem; color: var(--text);
  margin-bottom: 24px; line-height: 1.7;
}
.q-counter {
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-size: 0.75rem; color: var(--text3); margin-bottom: 4px;
}

/* ─── Aussagen ─────────────────────────────────────────────────────── */
.aussagen-list {
  margin: 0 0 12px; display: flex; flex-direction: column; gap: 1px;
}
.aussagen-list-label {
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--text3); margin-bottom: 4px;
}
.aussage-item {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 4px 0; border-radius: 0;
  background: transparent; border: none; font-size: 0.9rem;
  line-height: 1.38; color: var(--text); transition: none;
}
.aussage-num {
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-weight: 600; font-size: 0.75rem;
  min-width: 16px; height: 16px; border-radius: 0;
  background: transparent; border: none; color: var(--text2);
  display: flex; align-items: center; justify-content: flex-start;
  flex-shrink: 0; margin-top: 2px;
}
.options-divider-label {
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--text3);
  margin: 2px 0 6px; padding-top: 6px; border-top: 1px solid var(--border);
}

/* ─── Optionen ─────────────────────────────────────────────────────── */
.options-list { display: flex; flex-direction: column; gap: 8px; }
.option-btn {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 12px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface2); color: var(--text);
  font-size: 0.9rem; line-height: 1.55; text-align: left;
  transition: border-color var(--transition), background var(--transition);
  font-family: inherit;
}
.option-btn:not(.disabled):hover {
  border-color: var(--opt-border); background: var(--opt-hover); transform: none;
}
.option-btn.selected {
  border-color: var(--accent); background: var(--accent-bg);
}
.option-btn.correct-answer {
  border-color: var(--correct-bd); background: var(--correct-bg);
}
.option-btn.wrong-answer {
  border-color: var(--wrong-bd); background: var(--wrong-bg);
}
.option-btn.disabled { pointer-events: none; }
.option-key {
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-weight: 700; font-size: 0.78rem; letter-spacing: 0.05em;
  min-width: 22px; height: 22px; border-radius: 6px;
  background: var(--bg2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 1px; transition: all var(--transition);
}
.option-btn.selected .option-key { background: var(--accent); border-color: var(--accent); color: white; }
.option-btn.correct-answer .option-key { background: var(--correct-bd); border-color: var(--correct-bd); color: white; }
.option-btn.wrong-answer .option-key { background: var(--wrong-bd); border-color: var(--wrong-bd); color: white; }

/* ─── Feedback Box ────────────────────────────────────────────────── */
.feedback-box {
  margin-top: 16px; padding: 12px 14px; border-radius: var(--radius-sm);
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-size: 0.87rem; line-height: 1.55; display: none;
}
.feedback-box.visible { display: block; }
.feedback-correct { background: var(--correct-bg); border: 1px solid var(--correct-bd); color: var(--correct-bd); }
.feedback-wrong { background: var(--wrong-bg); border: 1px solid var(--wrong-bd); color: var(--danger); }
.feedback-icon { font-size: 1rem; margin-right: 6px; }
.feedback-explanation { margin-top: 6px; color: var(--text2); font-style: italic; }

/* ─── Quiz Actions ──────────────────────────────────────────────────── */
.quiz-actions {
  display: flex; gap: 10px; margin-top: 22px;
  flex-wrap: wrap; align-items: center;
  justify-content: flex-start;
}
#cancelPrüfungBtn {
  order: -1;
  margin-right: auto;
}
.multi-hint {
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-size: 0.75rem; color: var(--text3); font-style: italic;
}

.multi-hint-top {
  margin-left: auto;
  white-space: nowrap;
}

/* ─── Result Card ──────────────────────────────────────────────────── */
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  box-shadow: none;
  animation: none;
}
.result-icon { font-size: 3.5rem; margin-bottom: 14px; }
.result-title {
  font-size: 1.5rem; color: var(--text); margin-bottom: 8px;
}
.result-sub {
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
  font-size: 0.9rem; color: var(--text2); margin-bottom: 26px;
}
.result-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 14px; margin-bottom: 28px;
}
.result-stat {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 10px;
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
}
.result-stat-num {
  font-size: 1.8rem; font-weight: 700;
  color: var(--accent); display: block;
}
.result-stat-label {
  font-size: 0.72rem; color: var(--text3);
  text-transform: uppercase; letter-spacing: 0.06em;
  margin-top: 2px; display: block;
}
.result-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ─── Stats Panel ──────────────────────────────────────────────────── */
.stats-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 10px;
  text-align: center;
  font-family: -apple-system, sans-serif;
}
.stat-card-label {
  font-size: 0.7rem;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}
.stat-card-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
}
.stats-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  margin-top: 20px;
}
.stats-title:first-child { margin-top: 0; }
.topic-table {
  font-size: 0.85rem;
  font-family: -apple-system, sans-serif;
}
.topic-row {
  display: flex;
  justify-content: space-between;
  padding: 8px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.topic-row:last-child { border-bottom: none; }
.topic-name { flex: 1; }
.topic-stats { text-align: right; color: var(--text2); }

/* ─── Empty State ──────────────────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 60px 20px;
  color: var(--text3);
  font-family: -apple-system, 'Helvetica Neue', sans-serif;
}
.empty-state .empty-icon { font-size: 3rem; margin-bottom: 12px; }
.empty-state p { font-size: 0.95rem; }

/* ─── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 560px) {
  .quiz-card { padding: 20px 18px; }
  .result-grid { grid-template-columns: repeat(3, 1fr); }
  .app-title { font-size: 1rem; }
  .result-stat-num { font-size: 1.4rem; }
  .menu-grid { grid-template-columns: 1fr; }
  .exam-grid { grid-template-columns: 1fr; }
}

/* ──────── EXAM SELECTION ──────────────────────────────────────────── */
.exam-selection-panel {
  padding: 1.5rem;
}

.exam-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.exam-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow);
  min-height: 90px;
}

.exam-card:hover {
  border-color: var(--accent);
  background: var(--accent-bg);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.exam-date {
  font-weight: 600;
  color: var(--text);
  text-align: center;
  font-size: 0.95rem;
}