@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;550;700&display=swap');

:root {
  --bg-color: #0b0d10;
  --panel-bg: rgba(20, 24, 33, 0.7);
  --panel-border: rgba(255, 255, 255, 0.06);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.35);
  
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  overflow: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.03) 0%, transparent 40%);
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.15);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* Layout Grid */
.app-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  width: 100vw;
  height: 100vh;
}

/* Sidebar Styling */
.sidebar {
  background: var(--panel-bg);
  border-right: 1px solid var(--panel-border);
  backdrop-filter: blur(16px);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.brand {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-icon {
  width: 2rem;
  height: 2rem;
  background: var(--primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  -webkit-text-fill-color: white; /* Reset fill for icon */
  box-shadow: 0 0 15px var(--primary-glow);
}

.nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.nav-item a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.nav-item.active a, .nav-item a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-item.active a {
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.15) 0%, rgba(99, 102, 241, 0.05) 100%);
  border-left: 3px solid var(--primary);
}

/* Stats Section in Sidebar */
.sidebar-stats {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.sidebar-stats h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.stat-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.65rem;
  font-size: 0.85rem;
}

.stat-item:last-child {
  margin-bottom: 0;
}

.stat-item .label {
  color: var(--text-secondary);
}

.stat-item .value {
  font-weight: 600;
}

.progress-bar-container {
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  margin-top: 0.5rem;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--primary);
  width: 0%;
  border-radius: 3px;
  transition: width 0.4s ease;
}

/* Logout Button */
.logout-form {
  margin-top: auto;
}

.btn-logout {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  background: transparent;
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-logout:hover {
  background: var(--danger-bg);
  border-color: var(--danger);
}

/* Main Area Layout */
.main-content {
  display: grid;
  grid-template-rows: 70px 1fr;
  height: 100vh;
  overflow: hidden;
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  border-bottom: 1px solid var(--panel-border);
  background: rgba(15, 18, 25, 0.4);
  backdrop-filter: blur(10px);
}

.page-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
}

/* Filters & Search */
.controls-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.search-wrapper {
  position: relative;
}

.search-input {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 0.45rem 0.75rem 0.45rem 2rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  width: 200px;
  transition: all 0.2s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  width: 260px;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.1);
}

.search-icon {
  position: absolute;
  left: 0.65rem;
  top: 50%;
  transform: translateY(-50%);
  fill: var(--text-muted);
  width: 14px;
  height: 14px;
}

.filter-btn-group {
  display: flex;
  background: rgba(0, 0, 0, 0.25);
  padding: 3px;
  border-radius: 8px;
  border: 1px solid var(--panel-border);
}

.filter-btn {
  background: transparent;
  border: none;
  padding: 0.4rem 0.85rem;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.825rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn.active, .filter-btn:hover {
  color: var(--text-primary);
}

.filter-btn.active {
  background: rgba(255, 255, 255, 0.08);
}

/* Base Buttons */
.btn-primary {
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.5rem 1rem;
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 0 15px var(--primary-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Main Workspace Grid - Split Screen */
.workspace {
  display: grid;
  grid-template-columns: 350px 1fr;
  height: calc(100vh - 70px);
  overflow: hidden;
}

/* Master List Column */
.master-list-col {
  border-right: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  background: rgba(0, 0, 0, 0.1);
  min-height: 0;
  height: 100%;
}

.list-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  min-height: 0;
}

.recording-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 0.75rem;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.recording-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.recording-card.active {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.08);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.1);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.card-duration {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: monospace;
}

.card-text {
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--text-primary);
  word-break: break-word;
}

.card-text.empty {
  color: var(--text-muted);
  font-style: italic;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-top: 0.25rem;
}

.card-details-small {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Badges */
.badge {
  font-size: 0.725rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  text-transform: capitalize;
}

.badge-sicher {
  background: var(--success-bg);
  color: var(--success);
}

.badge-vermutet {
  background: var(--warning-bg);
  color: var(--warning);
}

.badge-unklar {
  background: var(--danger-bg);
  color: var(--danger);
}

.badge-none {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
}

/* Detail view Panel */
.detail-view-col {
  padding: 2rem;
  overflow-y: auto;
  background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.03) 0%, transparent 60%);
}

.detail-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  text-align: center;
  padding: 3rem;
}

.empty-icon {
  width: 4rem;
  height: 4rem;
  margin-bottom: 1.5rem;
  opacity: 0.2;
}

/* Waveform Visualizer Card */
.player-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  position: relative;
}

.waveform-container {
  background: rgba(0, 0, 0, 0.25);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.02);
  min-height: 80px;
  position: relative;
}

/* Loader style */
.loader {
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-secondary);
  font-size: 0.875rem;
  gap: 0.5rem;
  align-items: center;
}

.player-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.left-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-play-pause {
  background: var(--primary);
  color: white;
  border: none;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
}

.btn-play-pause:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.5);
}

.btn-play-pause svg {
  width: 18px;
  height: 18px;
  fill: white;
}

.loop-toggle {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--panel-border);
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.825rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

.loop-toggle:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.loop-toggle.active {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--primary);
  color: #a5b4fc;
}

.speed-control {
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.2);
  padding: 3px;
  border-radius: 8px;
  border: 1px solid var(--panel-border);
}

.speed-chip {
  background: transparent;
  border: none;
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 500;
}

.speed-chip.active, .speed-chip:hover {
  color: var(--text-primary);
}

.speed-chip.active {
  background: rgba(255, 255, 255, 0.08);
}

/* Form Container Card */
.form-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 2rem;
  backdrop-filter: blur(12px);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-group-full {
  grid-column: 1 / span 2;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--panel-border);
  padding: 0.75rem;
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.95rem;
  width: 100%;
  transition: all 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
}

.form-select {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--panel-border);
  padding: 0.725rem;
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.95rem;
  width: 100%;
  transition: all 0.2s ease;
  cursor: pointer;
}

.form-select:focus {
  outline: none;
  border-color: var(--primary);
}

.form-select option {
  background-color: var(--bg-color);
  color: var(--text-primary);
}

.form-textarea {
  min-height: 80px;
  resize: vertical;
}

.confidence-selector {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
}

.confidence-btn {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--panel-border);
  padding: 0.65rem;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.confidence-btn:hover {
  background: rgba(255, 255, 255, 0.05);
}

.confidence-btn[data-value="sicher"].active {
  background: var(--success-bg);
  border-color: var(--success);
  color: var(--success);
}

.confidence-btn[data-value="vermutet"].active {
  background: var(--warning-bg);
  border-color: var(--warning);
  color: var(--warning);
}

.confidence-btn[data-value="unklar"].active {
  background: var(--danger-bg);
  border-color: var(--danger);
  color: var(--danger);
}

/* Warnings and Hints */
.similarity-banner {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: #ffedd5;
  display: none;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.similarity-banner .actions {
  display: flex;
  gap: 0.5rem;
}

.btn-small {
  padding: 0.3rem 0.6rem;
  font-size: 0.75rem;
  border-radius: 4px;
}

/* Helper layout for save/delete */
.detail-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.5rem;
}

.detail-actions-right {
  display: flex;
  gap: 1rem;
}

.btn-delete-recording {
  background: transparent;
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.15);
}

.btn-delete-recording:hover {
  background: var(--danger-bg);
  border-color: var(--danger);
}

/* Metadata summary block */
.meta-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  background: rgba(0, 0, 0, 0.15);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  font-size: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.02);
}

.meta-summary-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.meta-summary-item span:first-child {
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.65rem;
  letter-spacing: 0.05em;
}

.meta-summary-item span:last-child {
  color: var(--text-secondary);
  font-weight: 550;
}

/* Autocomplete Suggestion Dropdown */
.autocomplete-wrapper {
  position: relative;
  width: 100%;
}

.autocomplete-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #181d28;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  margin-top: 4px;
  max-height: 180px;
  overflow-y: auto;
  z-index: 100;
  box-shadow: 0 8px 16px rgba(0,0,0,0.5);
  display: none;
}

.autocomplete-item {
  padding: 0.65rem 1rem;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: all 0.15s ease;
  display: flex;
  justify-content: space-between;
}

.autocomplete-item:hover, .autocomplete-item.selected {
  background: rgba(99, 102, 241, 0.15);
  color: var(--text-primary);
}

.autocomplete-item .count-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Keyboard Shortcut Box */
.shortcuts-legend {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 1rem;
  font-size: 0.75rem;
}

.shortcuts-legend h4 {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.5rem;
}

.shortcut-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-secondary);
}

kbd {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  padding: 0.1rem 0.35rem;
  font-family: monospace;
  font-weight: 600;
  color: var(--text-primary);
}

/* Vocabulary Maintenance Page */
.vocab-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
}

.vocab-header-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.vocab-table-container {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.vocab-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.vocab-table th, .vocab-table td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--panel-border);
}

.vocab-table th {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(0, 0, 0, 0.15);
}

.vocab-table tr:last-child td {
  border-bottom: none;
}

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

.vocab-word {
  font-family: 'Outfit', sans-serif;
  font-weight: 550;
  color: var(--text-primary);
}

.vocab-count {
  font-weight: 600;
  color: var(--primary);
}

.vocab-actions {
  display: flex;
  gap: 0.5rem;
}

/* Modal Dialog */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
}

.modal-card {
  background: #141822;
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  width: 450px;
  max-width: 90%;
  padding: 1.75rem;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.modal-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
}

.modal-body {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

/* Login Page Styling */
.login-body {
  background-color: var(--bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  width: 100vw;
}

.login-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  padding: 2.5rem;
  width: 400px;
  backdrop-filter: blur(20px);
  box-shadow: 0 15px 35px rgba(0,0,0,0.4);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  text-align: center;
}

.login-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.login-logo .icon {
  width: 3.5rem;
  height: 3.5rem;
  background: var(--primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: white;
  box-shadow: 0 0 20px var(--primary-glow);
}

.login-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.75rem;
  color: var(--text-primary);
  margin-top: 0.5rem;
}

.login-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  text-align: left;
}

.login-error {
  background: var(--danger-bg);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  line-height: 1.4;
}

/* Toast Message styling */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  background: #181d28;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 0.85rem 1.25rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  color: var(--text-primary);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 250px;
  animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.toast-success {
  border-left: 3px solid var(--success);
}

.toast-error {
  border-left: 3px solid var(--danger);
}

@keyframes slideIn {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* --- Enhanced Spacing & Trimming UI --- */
.trimming-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 1rem 1.25rem;
  backdrop-filter: blur(12px);
  margin-top: 0.25rem;
  margin-bottom: 0.25rem;
}

.trimming-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  flex-wrap: wrap;
}

.trimming-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.trimming-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-danger-outline {
  border-color: var(--danger) !important;
  color: var(--danger) !important;
}

.btn-danger-outline:hover {
  background: var(--danger-bg) !important;
}

/* Form Spacings */
.form-card {
  gap: 1.75rem;
}

.form-grid {
  gap: 1.75rem 1.5rem;
}

.detail-actions {
  padding-top: 1.75rem;
  border-top: 1px solid var(--panel-border);
  margin-top: 0.5rem;
}

.detail-container {
  gap: 1.75rem;
}

/* --- Full Responsiveness (Mobile, Tablet, Desktop) --- */
@media (max-width: 1100px) {
  .app-container {
    grid-template-columns: 240px 1fr;
  }
  .workspace {
    grid-template-columns: 320px 1fr;
  }
}

@media (max-width: 900px) {
  body {
    overflow-y: auto;
  }
  .app-container {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: auto;
    min-height: 100vh;
  }

  .sidebar {
    width: 100%;
    height: auto;
    padding: 1.25rem 1.5rem;
    border-right: none;
    border-bottom: 1px solid var(--panel-border);
  }

  .brand {
    margin-bottom: 1rem;
  }

  .nav-menu {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .nav-item a {
    padding: 0.6rem 0.85rem;
    font-size: 0.875rem;
  }

  .sidebar-stats {
    margin-top: 1rem;
    margin-bottom: 0;
  }

  .main-content {
    grid-template-rows: auto 1fr;
    height: auto;
    overflow: visible;
  }

  .top-bar {
    padding: 1.25rem 1.5rem;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    height: auto;
  }

  .controls-container {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    width: 100%;
  }

  .search-wrapper, .search-input {
    width: 100% !important;
  }

  .filter-btn-group {
    width: 100%;
    justify-content: space-between;
  }

  .filter-btn {
    flex: 1;
    text-align: center;
  }

  .workspace {
    display: flex;
    flex-direction: column;
    height: auto;
    overflow: visible;
  }

  .master-list-col {
    width: 100%;
    max-height: 380px;
    border-right: none;
    border-bottom: 1px solid var(--panel-border);
  }

  .detail-view-col {
    width: 100%;
    padding: 1.25rem;
    height: auto;
  }

  .form-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .form-group-full {
    grid-column: 1;
  }

  .shortcuts-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 580px) {
  .player-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .left-controls {
    justify-content: space-between;
    width: 100%;
  }

  .speed-control {
    width: 100%;
    justify-content: space-around;
  }

  .speed-chip {
    flex: 1;
    text-align: center;
  }

  .confidence-selector {
    grid-template-columns: 1fr;
  }

  .detail-actions {
    flex-direction: column-reverse;
    align-items: stretch;
    gap: 0.75rem;
  }

  .detail-actions-right {
    width: 100%;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .shortcuts-grid {
    grid-template-columns: 1fr;
  }

  .trimming-content {
    flex-direction: column;
    align-items: stretch;
  }

  .trimming-actions {
    width: 100%;
    justify-content: space-between;
  }

  .trimming-actions button {
    flex: 1;
    text-align: center;
  }

  .vocab-container {
    padding: 1rem;
  }

  .vocab-header-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .vocab-table-container {
    overflow-x: auto;
  }
}