* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  background: #f4f4f5;
  color: #111827;
  min-height: 100vh;
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px;
}

/* Header – gelbes Design wie Thai-App */
.app-header {
  background: linear-gradient(90deg, #f97316, #facc15);
  border-radius: 18px;
  padding: 16px 20px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: #111827;
}

.app-header h1 {
  font-size: 1.6rem;
  margin-bottom: 4px;
}

.subtitle {
  font-size: 0.95rem;
  color: #1f2937;
}

.badge {
  background: rgba(255, 255, 255, 0.85);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.9rem;
  white-space: nowrap;
  border: 1px solid rgba(148, 163, 184, 0.7);
}

/* Hauptbereich */
.app-main {
  background: #f9fafb;
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

/* Übersicht / Karten */
.section-title {
  font-size: 1.3rem;
  margin-bottom: 4px;
}

.section-subtitle {
  font-size: 0.95rem;
  color: #6b7280;
  margin-bottom: 16px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
}

.category-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 14px 16px;
  border: 1px solid #e5e7eb;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.1s ease, border-color 0.1s ease;
}

.category-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
  border-color: #f97316;
}

.category-card-header {
  display: flex;
  gap: 10px;
  align-items: center;
}

.category-emoji {
  font-size: 1.6rem;
}

.category-card-title {
  font-size: 1rem;
  font-weight: 600;
}

.category-card-subtitle {
  font-size: 0.9rem;
  color: #6b7280;
}

.category-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: #6b7280;
}

.category-card-link {
  font-weight: 600;
  color: #f97316;
}

/* Kategorie-Ansicht */
.view {
  display: none;
}

.view.active {
  display: block;
}

/* Zurück-Button – extra groß */
.back-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 14px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 1px solid #d1d5db;
  background: #ffffff;
  color: #111827;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.12s ease, transform 0.12s ease, box-shadow 0.12s ease;
}

.back-button:hover {
  background: #f3f4f6;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.06);
}

.category-header {
  margin-bottom: 12px;
}

.category-label {
  font-size: 0.85rem;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.category-title {
  font-size: 1.3rem;
  margin-bottom: 4px;
}

.category-description {
  font-size: 0.95rem;
  color: #6b7280;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
  background: #e5e7eb;
  border-radius: 999px;
  padding: 4px;
}

.tab-button {
  flex: 1;
  padding: 9px 10px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: #4b5563;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.tab-button.active {
  background: #ffffff;
  color: #111827;
  box-shadow: 0 6px 14px rgba(15, 23, 42, 0.08);
}

/* Inhalt */
.content-area {
  margin-top: 6px;
}

.placeholder {
  color: #6b7280;
  font-size: 0.95rem;
}

/* Lernkarten */
.phrase-card {
  background: #ffffff;
  border-radius: 14px;
  border: 1px solid #e5e7eb;
  padding: 12px 14px;
  margin-bottom: 10px;
}

.phrase-main {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.phrase-sub {
  font-size: 0.95rem;
  color: #111827;
}

.phrase-phonetic {
  font-size: 0.9rem;
  color: #6366f1;
  margin-top: 2px;
}

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

/* Allgemeine Buttons (Audio, Quiz, Mic) – größer */
.audio-button,
.quiz-option,
.quiz-next-button,
.mic-button {
  border-radius: 999px;
  border: 1px solid #d1d5db;
  background: #ffffff;
  color: #111827;
  padding: 9px 18px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.12s ease, border 0.12s ease, transform 0.12s ease, box-shadow 0.12s ease;
}

.audio-button:hover,
.quiz-option:hover,
.quiz-next-button:hover,
.mic-button:hover {
  background: #f3f4f6;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
}

/* Quiz Status */
.quiz-option.correct {
  background: #22c55e;
  border-color: #16a34a;
  color: #ffffff;
}

.quiz-option.wrong {
  background: #ef4444;
  border-color: #b91c1c;
  color: #ffffff;
}

.quiz-question {
  margin-bottom: 10px;
}

.quiz-meta {
  font-size: 0.9rem;
  color: #6b7280;
  margin-bottom: 8px;
}

.quiz-feedback {
  margin-top: 8px;
  font-size: 0.95rem;
}

.quiz-feedback.correct {
  color: #16a34a;
}

.quiz-feedback.wrong {
  color: #ea580c;
}

/* Aussprache */
.pronunciation-text {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.recognized-text {
  margin-top: 8px;
  font-size: 0.9rem;
  color: #6b7280;
}

.app-footer {
  margin-top: 18px;
  text-align: center;
  font-size: 0.85rem;
  color: #6b7280;
}

/* Responsive */
@media (max-width: 800px) {
  .app {
    padding: 12px;
  }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
  }
}