:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-card: rgba(31, 41, 55, 0.7);
  --bg-card-hover: rgba(55, 65, 81, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #3b82f6;

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --accent-primary: #3b82f6;
  --accent-primary-hover: #2563eb;
  --accent-secondary: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  --accent-glow: 0 0 25px rgba(59, 130, 246, 0.35);

  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.15);
  --color-error: #ef4444;
  --color-error-bg: rgba(239, 68, 68, 0.15);
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.15);
  --color-prio: #ec4899;
  --color-prio-bg: rgba(236, 72, 153, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: #ffffff;
  --border-color: rgba(0, 0, 0, 0.08);
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  --accent-glow: 0 0 20px rgba(59, 130, 246, 0.2);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(59, 130, 246, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(6, 182, 212, 0.08) 0%, transparent 40%);
  background-attachment: fixed;
}

/* Header */
.app-header {
  background: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--accent-glow);
  color: white;
  font-size: 1.2rem;
  font-weight: 700;
  flex-shrink: 0;
}

.brand-text h1 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, #ffffff 40%, #93c5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

[data-theme="light"] .brand-text h1 {
  background: linear-gradient(120deg, #0f172a 40%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text p {
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Nav Tabs with horizontal scrolling on mobile */
.nav-tabs-wrapper {
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0.2rem 0;
}

.nav-tabs-wrapper::-webkit-scrollbar {
  display: none;
}

.nav-tabs {
  display: flex;
  gap: 0.35rem;
  background: rgba(0, 0, 0, 0.25);
  padding: 0.25rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  width: max-content;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-weight: 500;
  font-size: 0.82rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
  transition: var(--transition);
}

.tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  background: var(--accent-primary);
  color: white;
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.4);
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
  font-size: 0.68rem;
  font-weight: 700;
}

.badge-prio {
  background: var(--color-prio);
  color: white;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.btn-icon {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.btn-icon:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-icon.muted {
  background: var(--color-error-bg);
  border-color: var(--color-error);
  color: var(--color-error);
}

/* Main Container */
.app-container {
  flex: 1;
  max-width: 1300px;
  width: 100%;
  margin: 0 auto;
  padding: 1.25rem;
}

.tab-content {
  display: none;
  animation: fadeIn 0.2s ease;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========================================================
   CARDS & GRIDS
   ======================================================== */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.card-title {
  font-size: 0.98rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-main);
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.stat-box {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.65rem;
  text-align: center;
}

.stat-box .stat-val {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-secondary);
}

.stat-box .stat-lbl {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.15rem;
}

/* Forms */
.form-group {
  margin-bottom: 0.75rem;
}

.form-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.form-select, .form-input {
  width: 100%;
  padding: 0.55rem 0.8rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.85rem;
  transition: var(--transition);
  outline: none;
}

.form-select:focus, .form-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25);
}

.slider-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.slider-group input[type="range"] {
  flex: 1;
  accent-color: var(--accent-primary);
}

.slider-val {
  font-size: 0.78rem;
  color: var(--text-muted);
  width: 32px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Buttons */
.btn-primary {
  width: 100%;
  padding: 0.75rem;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  transition: var(--transition);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-secondary {
  padding: 0.6rem 0.9rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-danger {
  background: var(--color-error);
  color: white;
  border: none;
}

.btn-danger:hover {
  background: #dc2626;
}

/* Mobile Sidebar Toggle Button */
.mobile-filter-toggle {
  display: none;
  margin-bottom: 1rem;
}

/* ========================================================
   SECTION: TIPPSPIEL (AUDIO & TYPING)
   ======================================================== */
.learn-dashboard {
  display: grid;
  grid-template-columns: 310px 1fr;
  gap: 1.25rem;
  align-items: start;
}

.learn-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.learn-main {
  min-height: 520px;
  display: flex;
  flex-direction: column;
}

.session-progress-bar {
  width: 100%;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 1rem;
}

.session-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent-gradient);
  transition: width 0.3s ease;
}

.session-meta-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.badge-tag {
  background: var(--bg-tertiary);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.badge-prio-active {
  background: var(--color-prio-bg);
  color: var(--color-prio);
  border-color: var(--color-prio);
}

.flashcard-stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.flashcard-stage::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
}

.tts-big-btn {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: var(--accent-gradient);
  border: none;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--accent-glow);
  margin-bottom: 1.25rem;
  transition: var(--transition);
  outline: none;
}

.tts-big-btn:hover {
  transform: scale(1.06);
}

.tts-big-btn.speaking {
  animation: pulseSpeaking 1.2s infinite ease-in-out;
}

@keyframes pulseSpeaking {
  0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7); }
  70% { box-shadow: 0 0 0 18px rgba(59, 130, 246, 0); }
  100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
}

.card-hint-text {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

/* Letter Slots (Responsive) */
.letter-slots-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  margin: 0.75rem 0 1.5rem;
  max-width: 900px;
  width: 100%;
}

.letter-slot {
  width: clamp(26px, 4.5vw, 40px);
  height: clamp(36px, 6vw, 50px);
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1rem, 3.2vw, 1.35rem);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-main);
  transition: all 0.15s ease;
  user-select: none;
}

.letter-slot.space {
  width: clamp(10px, 2vw, 18px);
  background: transparent;
  border: none;
}

.letter-slot.punct {
  background: transparent;
  border-color: transparent;
  color: var(--text-muted);
}

.letter-slot.current {
  border-color: var(--accent-primary);
  background: rgba(59, 130, 246, 0.12);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.35);
  animation: cursorBlink 1s infinite;
}

.letter-slot.revealed {
  border-color: var(--color-success);
  background: var(--color-success-bg);
  color: var(--color-success);
  animation: popIn 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.letter-slot.revealed-skip {
  border-color: var(--color-warning);
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.letter-slot.error-shake {
  animation: shake 0.35s ease;
  border-color: var(--color-error);
  background: var(--color-error-bg);
}

@keyframes popIn {
  0% { transform: scale(0.7); }
  100% { transform: scale(1); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

/* On-Screen Mobile Keyboard */
.mobile-keyboard-container {
  width: 100%;
  max-width: 650px;
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.5rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.kb-row {
  display: flex;
  justify-content: center;
  gap: 0.25rem;
}

.kb-key {
  flex: 1;
  max-width: 44px;
  height: 42px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
  transition: var(--transition);
}

.kb-key:active {
  background: var(--accent-primary);
  color: white;
  transform: scale(0.94);
}

.kb-key-wide {
  flex: 1.5;
  max-width: 65px;
  font-size: 0.85rem;
}

.card-controls {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1rem;
}

.btn-skip {
  padding: 0.65rem 1.25rem;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.btn-skip:hover {
  background: var(--color-error-bg);
  border-color: var(--color-error);
  color: var(--color-error);
}

#hidden-type-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  left: -9999px;
}

.card-feedback-overlay {
  margin-top: 0.75rem;
  font-size: 0.92rem;
  font-weight: 600;
  min-height: 24px;
}

.feedback-success { color: var(--color-success); }
.feedback-skip { color: var(--color-warning); }

.feedback-error-counter {
  color: var(--color-error);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  background: var(--color-error-bg);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  border: 1px solid rgba(239, 68, 68, 0.3);
  animation: popIn 0.2s ease;
}

.error-dots {
  letter-spacing: 2px;
  font-size: 0.9rem;
}

.error-prio-box {
  width: 100%;
  max-width: 520px;
  margin: 1rem auto 0.5rem auto;
  animation: popIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.prio-notice-content {
  background: var(--bg-tertiary);
  border: 1.5px solid var(--color-warning);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.15), 0 0 15px rgba(236, 72, 153, 0.15);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.25rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  align-items: center;
}

.prio-notice-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-warning);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.prio-notice-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.5px;
  word-break: break-word;
}

.btn-space-continue {
  margin-top: 0.3rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--accent-gradient);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-full);
  padding: 0.6rem 1.4rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
  transition: var(--transition);
}

.btn-space-continue:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.btn-space-continue:active {
  transform: translateY(0) scale(0.97);
}

.space-key-pill {
  display: inline-block;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 6px;
  padding: 0.15rem 0.5rem;
  font-size: 0.82rem;
  font-weight: 700;
  box-shadow: 0 2px 0 rgba(0,0,0,0.25);
}

/* ========================================================
   SECTION: KARTEIKARTEN (LESEN & BLÄTTERN) - NEU!
   ======================================================== */
.flashcards-layout {
  display: grid;
  grid-template-columns: 310px 1fr;
  gap: 1.25rem;
  align-items: start;
}

.fc-card-viewport {
  min-height: 480px;
  display: flex;
  flex-direction: column;
}

.fc-card {
  flex: 1;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.fc-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
}

.fc-star-btn {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  background: transparent;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--text-dim);
  transition: var(--transition);
}

.fc-star-btn:hover {
  transform: scale(1.2);
}

.fc-star-btn.is-prio {
  color: var(--color-prio);
}

.fc-key-tag {
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--accent-secondary);
  background: rgba(6, 182, 212, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
}

.fc-street-title {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  line-height: 1.2;
  color: var(--text-main);
}

.fc-districts-box {
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.fc-district-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
}

.fc-district-pill {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main);
}

.fc-plz-row {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Nav Controls for Flashcards */
.fc-nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.25rem;
  gap: 1rem;
}

.fc-nav-btn {
  flex: 1;
  padding: 0.85rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* ========================================================
   DIRECTORY & TABLE
   ======================================================== */
.directory-header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
}

.search-input {
  width: 100%;
  padding: 0.6rem 0.9rem 0.6rem 2.4rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.88rem;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.table-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.street-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.street-table th {
  background: var(--bg-tertiary);
  padding: 0.75rem 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.street-table td {
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

.street-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.street-name-cell {
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-prio-toggle {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.2rem;
  font-size: 1.1rem;
  transition: var(--transition);
}

.btn-prio-toggle:hover {
  transform: scale(1.2);
}

.btn-prio-toggle.is-prio {
  color: var(--color-prio);
}

.action-btns {
  display: flex;
  gap: 0.3rem;
}

.btn-sm-action {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
}

.table-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.pagination-controls {
  display: flex;
  gap: 0.35rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}

.modal-overlay.active {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 100%;
  padding: 1.5rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

/* ========================================================
   RESPONSIVE / MOBILE OPTIMISIERUNG (< 800px)
   ======================================================== */
@media (max-width: 820px) {
  .app-header {
    flex-wrap: wrap;
    padding: 0.5rem 0.75rem;
  }

  .brand-text p {
    display: none; /* Platz sparen */
  }

  .nav-tabs-wrapper {
    order: 3;
    width: 100%;
    margin-top: 0.35rem;
  }

  .learn-dashboard, .flashcards-layout {
    grid-template-columns: 1fr;
  }

  .learn-sidebar, .fc-sidebar {
    display: none; /* Mobile collapse */
  }

  .learn-sidebar.mobile-open, .fc-sidebar.mobile-open {
    display: flex;
  }

  .mobile-filter-toggle {
    display: flex;
    width: 100%;
  }

  .app-container {
    padding: 0.75rem;
  }

  .flashcard-stage {
    padding: 1.5rem 0.75rem;
  }

  .tts-big-btn {
    width: 64px;
    height: 64px;
    margin-bottom: 0.85rem;
  }

  .fc-card {
    padding: 2rem 1rem;
    min-height: 360px;
  }

  .fc-street-title {
    font-size: 1.5rem;
  }

  .table-pagination {
    flex-direction: column;
    gap: 0.75rem;
  }
}