app/static/css/style.css

:root {
  --primary-color: #0f4f9b; /* Blue accent */
  --primary-hover: #0c3e7a; /* Darker blue accent */
  --bg-color: #121212;      /* Dark background */
  --card-bg: #1e1e1e;       /* Dark card background */
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.7),
                 0 2px 4px -1px rgba(0, 0, 0, 0.6);
  --transition: all 0.3s ease;
  --text-color: #E0E0E0;    /* Main text color */
  --secondary-text: #A0A0A0;/* Secondary text color */
  --input-bg: #2a2a2a;      /* Input/textarea background */
  --input-border: #444444;  /* Input/textarea border */
  --input-focus: #0f4f9b;   /* Focus border color */
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  scrollbar-width: thin;
  scrollbar-color: #0f4f9b #121212
}

/* Width and height of the scrollbar */
::-webkit-scrollbar {
width: 12px;
height: 12px;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Loading spinner styles */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s linear infinite;
  margin-left: 8px;
  vertical-align: middle;
}

.loading-spinner.large {
  width: 40px;
  height: 40px;
  border-width: 3px;
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(18, 18, 18, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.loading-overlay.active {
  opacity: 1;
  visibility: visible;
}

.loading-content {
  background-color: var(--card-bg);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: var(--card-shadow);
  text-align: center;
  min-width: 200px;
}

.loading-text {
  color: var(--text-color);
  font-size: 1.1rem;
  margin-top: 1rem;
}

/* Keyboard shortcut indicator */
.keyboard-shortcut-hint {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(15, 79, 155, 0.1);
  color: var(--primary-color);
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  border: 1px solid rgba(15, 79, 155, 0.2);
  pointer-events: none;
  opacity: 0.7;
  font-family: monospace;
}

.input-section {
  position: relative;
}

/* Card header styles */
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-header .card-title {
  margin-bottom: 0;
}

/* Token search styles */
.search-toggle-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 2px 4px rgba(15, 79, 155, 0.3);
  padding: 0;
  flex-shrink: 0;
}

.search-toggle-btn:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(15, 79, 155, 0.4);
}

.search-toggle-btn.active {
  background-color: var(--primary-hover);
  box-shadow: 0 2px 8px rgba(15, 79, 155, 0.5);
}

.search-toggle-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  flex-shrink: 0;
}

.token-search-container {
  display: none;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 1.25rem;
  background-color: rgba(15, 79, 155, 0.1);
  border-radius: 0.75rem;
  border: 1px solid rgba(15, 79, 155, 0.2);
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  width: 100%;
}

.token-search-container.show {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

.token-search-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.token-search-input {
  flex: 1;
  padding: 0.875rem 1rem;
  border: 2px solid var(--input-border);
  border-radius: 0.5rem;
  background-color: var(--input-bg);
  color: var(--text-color);
  font-size: 1rem;
  transition: var(--transition);
  min-width: 0;
}

.token-search-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(15, 79, 155, 0.1);
}

.token-search-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.token-search-btn {
  padding: 0.5rem 1rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 1px 3px rgba(15, 79, 155, 0.3);
  min-width: 44px;
}

.token-search-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(15, 79, 155, 0.4);
}

.token-search-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.token-search-count {
  color: var(--text-color);
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  background-color: rgba(255, 255, 255, 0.1);
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  min-width: 60px;
  text-align: center;
}

/* Highlighted token styles */
.token.highlighted {
  background-color: #fbbf24 !important;
  color: #1f2937 !important;
  box-shadow: 0 0 0 2px #f59e0b;
  z-index: 1;
  position: relative;
}

.token.highlighted.current {
  background-color: #f59e0b !important;
  color: white !important;
  box-shadow: 0 0 0 3px #f59e0b;
}

/* Token frequency chart styles */
.frequency-chart-container {
  margin-top: 1.5rem;
  padding: 1rem;
  background-color: rgba(15, 79, 155, 0.05);
  border-radius: 0.5rem;
  border: 1px solid rgba(15, 79, 155, 0.1);
}

.frequency-chart-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.frequency-chart {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.frequency-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  background-color: var(--input-bg);
  border-radius: 0.375rem;
  transition: var(--transition);
}

.frequency-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.frequency-token {
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', 'Droid Sans Mono', 'Source Code Pro', monospace;
  font-size: 0.8rem;
  background-color: rgba(15, 79, 155, 0.2);
  color: var(--primary-color);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  min-width: 60px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.frequency-token:hover {
  background-color: var(--primary-color);
  color: white;
}

.frequency-bar-container {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.frequency-bar {
  flex: 1;
  height: 20px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.frequency-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-hover) 100%);
  border-radius: 10px;
  transition: width 0.5s ease;
  position: relative;
}

.frequency-count {
  color: var(--secondary-text);
  font-size: 0.8rem;
  font-weight: 500;
  min-width: 40px;
  text-align: right;
}

.chart-toggle-btn {
  background: none;
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  padding: 0.375rem 0.75rem;
  border-radius: 0.375rem;
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: none;
}

.chart-toggle-btn:hover {
  background-color: var(--primary-color);
  color: white;
  transform: none;
  box-shadow: none;
}

.chart-toggle-btn.active {
  background-color: var(--primary-color);
  color: white;
}

/* Track (background) */
::-webkit-scrollbar-track {
background: #121212;
border-radius: 10px;
}

/* Handle (draggable part) */
::-webkit-scrollbar-thumb {
background: #0f4f9b;
border-radius: 10px;
border: 2px solid #121212;
}

/* Handle on hover */
::-webkit-scrollbar-thumb:hover {
background: #0c3e7a;
}


body {
  background-color: var(--bg-color);
  padding: 2rem;
  min-height: 100vh;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(15, 79, 155, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(15, 79, 155, 0.1) 0%, transparent 50%);
  color: var(--text-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  position: relative;
}

.title-section {
  flex-grow: 1;
}

.title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--secondary-text);
  font-size: 1.1rem;
}

.model-selector {
  position: relative;
  min-width: 200px;
}

.model-selector-header {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.model-type-toggle {
  display: flex;
  background-color: var(--card-bg);
  border-radius: 0.5rem;
  padding: 0.25rem;
  overflow: hidden;
}

.toggle-option {
  padding: 0.5rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border-radius: 0.375rem;
  color: var(--secondary-text);
}

.toggle-option.active {
  background-color: var(--primary-color);
  color: white;
}

select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--input-border);
  border-radius: 0.5rem;
  font-size: 1rem;
  color: var(--text-color);
  background-color: var(--input-bg);
  cursor: pointer;
  transition: var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%230f4f9b'%3E%3Cpath d='M7 10l5 5 5-5H7z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.5rem;
}

select:hover, .custom-model-input:hover {
  border-color: var(--primary-color);
}

select:focus, .custom-model-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(15, 79, 155, 0.1);
}

.custom-model-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--input-border);
  border-radius: 0.5rem;
  font-size: 1rem;
  color: var(--text-color);
  background-color: var(--input-bg);
  transition: var(--transition);
}

.input-section {
  margin-bottom: 2rem;
}

textarea {
  width: 100%;
  height: 150px;
  padding: 1.25rem;
  border: 2px solid var(--input-border);
  border-radius: 0.75rem;
  resize: vertical;
  font-size: 1rem;
  margin-bottom: 1rem;
  transition: var(--transition);
  background-color: var(--input-bg);
  color: var(--text-color);
}

textarea:focus {
  outline: none;
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px rgba(15, 79, 155, 0.1);
}

.button-container {
  display: flex;
  justify-content: center;
  width: 100%;
  gap: 1rem;
}

button {
  padding: 0.875rem 2.5rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
  color: #fff;
  border: none;
  border-radius: 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 6px -1px rgba(15, 79, 155, 0.2);
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 8px -1px rgba(15, 79, 155, 0.3);
}

button:active {
  transform: translateY(0);
}

button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.card {
  background-color: var(--card-bg);
  border-radius: 1rem;
  box-shadow: var(--card-shadow);
  padding: 1.5rem;
  margin-bottom: 2rem;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px -2px rgba(0, 0, 0, 0.1);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.card-title::before {
  content: '';
  display: block;
  width: 4px;
  height: 1.25rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
  border-radius: 2px;
}

.token-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 1rem;
  padding: 1rem;
  background-color: #2a2a2a;
  border-radius: 0.5rem;
  max-height: 200px;
  overflow-y: auto;
  transition: max-height 0.3s ease;
}

.token-container.expanded {
  max-height: none;
}

.token {
  padding: 0.375rem 0.75rem;
  border-radius: 0.375rem;
  background-color: var(--input-bg);
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', 'Droid Sans Mono', 'Source Code Pro', monospace;
  font-size: 0.875rem;
  color: var(--text-color);
  cursor: default;
  transition: var(--transition);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.token:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background-color: var(--card-bg);
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px -2px rgba(0, 0, 0, 0.1);
}

.stat-title {
  color: var(--secondary-text);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  color: var(--text-color);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.25rem;
}

.stat-description {
  color: var(--secondary-text);
  font-size: 0.875rem;
}

.expand-button {
  background: none;
  border: none;
  color: var(--primary-color);
  font-size: 0.875rem;
  padding: 0.5rem;
  cursor: pointer;
  display: block;
  margin: 0 auto;
  box-shadow: none;
}

.expand-button:hover {
  text-decoration: underline;
  transform: none;
  box-shadow: none;
}

.error-message {
  color: #EF4444;
  background-color: #3a1f1f;
  border: 1px solid #562626;
  padding: 1rem;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
  display: none;
}

.display-limit-notice {
  background-color: #4b2b07;
  border: 1px solid #7c4a02;
  color: #FFD591;
  padding: 0.75rem;
  border-radius: 0.5rem;
  margin-top: 1rem;
  font-size: 0.875rem;
  display: none;
}

/* File drop zone styles */
.file-drop-zone {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 79, 155, 0.15);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.file-drop-zone.active {
  opacity: 1;
  pointer-events: all;
}

.drop-indicator {
  background-color: var(--card-bg);
  border: 2px dashed var(--primary-color);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  width: 60%;
  max-width: 400px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.drop-indicator p {
  margin-bottom: 0.5rem;
  color: var(--text-color);
  font-size: 1.2rem;
}

.file-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.file-upload-icon {
  position: fixed;
  bottom: 20px;
  left: 20px;
  width: 45px;
  height: 45px;
  background-color: var(--card-bg);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.file-upload-icon:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.file-upload-icon span {
  font-size: 1.5rem;
  color: var(--primary-color);
}

.file-info {
  position: fixed;
  bottom: 20px;
  left: 75px;
  background-color: var(--card-bg);
  color: var(--primary-color);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 1rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  max-width: 270px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  z-index: 100;
  display: none;
}

.file-detach {
  margin-left: 8px;
  display: inline-block;
  width: 18px;
  height: 18px;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--text-color);
  border-radius: 50%;
  text-align: center;
  line-height: 16px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.file-detach:hover {
  background-color: rgba(255, 0, 0, 0.2);
  color: #ff6b6b;
  transform: scale(1.1);
}

.preview-notice {
  background-color: #273c56;
  border: 1px solid #365a82;
  color: #89b4e8;
  padding: 0.75rem;
  border-radius: 0.5rem;
  margin-top: 1rem;
  font-size: 0.875rem;
  display: none;
}

.custom-model-wrapper {
  position: relative;
}

.model-badge {
  position: absolute;
  top: -10px;
  right: -5px;
  background: linear-gradient(135deg, #22c55e 0%, #15803d 100%);
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
  transform: scale(0);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  z-index: 10;
}

.model-badge.show {
  transform: scale(1);
}

.custom-model-help {
  display: inline-block;
  width: 16px;
  height: 16px;
  line-height: 16px;
  font-size: 11px;
  font-weight: bold;
  text-align: center;
  background-color: var(--secondary-text);
  color: var(--card-bg);
  border-radius: 50%;
  margin-left: 5px;
  cursor: help;
  vertical-align: middle;
}

.tooltip {
  position: absolute;
  top: 100%;
  left: 0;
  width: 280px;
  background-color: #333;
  color: #fff;
  padding: 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.8rem;
  margin-top: 0.5rem;
  z-index: 100;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.custom-model-help:hover + .tooltip {
  opacity: 1;
  visibility: visible;
}

/* Tokenizer info icon and tooltip styles */
.tokenizer-info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
  color: white;
  border-radius: 50%;
  position: absolute;
  left: -32px; /* Position to the left of the selector */
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  font-size: 12px;
  font-weight: bold;
  transition: all 0.2s ease;
  z-index: 10;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.tokenizer-info-icon:hover {
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3);
}

/* Watermark styles */
.watermark {
  position: fixed;
  bottom: 20px;
  right: 20px;
  color: var(--primary-color);
  font-size: 1.4rem;
  font-weight: 700;
  opacity: 0.25; /* Semi-transparent */
  z-index: 100;
  transition: opacity 0.3s ease;
  text-decoration: none;
  pointer-events: auto; /* Ensure it remains clickable */
}

.watermark:hover {
  opacity: 0.6; /* Increase opacity on hover */
}

.tokenizer-info-tooltip {
  position: absolute;
  top: calc(100% + 8px);
  left: -30px; /* Adjust position to align with the icon */
  width: 300px;
  background-color: var(--card-bg);
  color: var(--text-color);
  border: 1px solid var(--primary-color);
  border-radius: 0.75rem;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  padding: 1rem;
  z-index: 1000; /* Increase z-index to ensure visibility */
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  pointer-events: none; /* Initially disable pointer events */
}

.tokenizer-info-icon:not(.tooltip-disabled):hover + .tokenizer-info-tooltip {
opacity: 1;
visibility: visible;
pointer-events: auto; 
}

.tokenizer-info-tooltip:hover {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.tokenizer-info-header {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--primary-color);
}

.tokenizer-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin: 0.75rem 0;
}

.tokenizer-info-item {
  display: flex;
  flex-direction: column;
}

.tokenizer-info-label {
  font-size: 0.75rem;
  color: var(--secondary-text);
  margin-bottom: 0.25rem;
}

.tokenizer-info-value {
  font-size: 0.95rem;
  font-weight: 500;
}

.special-tokens-container {
  margin-top: 0.75rem;
  background-color: rgba(15, 79, 155, 0.1);
  border-radius: 0.5rem;
  padding: 0.5rem;
  max-height: 100px;
  overflow-y: auto;
}

.special-token-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.25rem;
  font-size: 0.8rem;
}

.token-name {
  color: var(--secondary-text);
}

.token-value {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 1px 4px;
  border-radius: 2px;
  font-family: monospace;
}

.tokenizer-info-loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100px;
}

.tokenizer-info-spinner {
  width: 30px;
  height: 30px;
  border: 3px solid var(--primary-color);
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 1s linear infinite;
}

.tokenizer-info-error {
  color: #f87171;
  font-size: 0.9rem;
  text-align: center;
  padding: 1rem;
}

/* Mobile responsiveness improvements */
@media (max-width: 768px) {
  body {
    padding: 1rem;
  }
  
  .container {
    max-width: 100%;
  }
  
  .header {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }
  
  .title {
    font-size: 2rem;
  }
  
  .subtitle {
    font-size: 1rem;
  }
  
  .model-selector {
    width: 100%;
  }
  
  .model-type-toggle {
    justify-content: center;
  }
  
  .toggle-option {
    flex: 1;
    text-align: center;
  }
  
  textarea {
    height: 120px;
    font-size: 16px; /* Prevents zoom on iOS */
  }
  
  .keyboard-shortcut-hint {
    top: 5px;
    right: 5px;
    font-size: 0.7rem;
    padding: 0.2rem 0.4rem;
  }
  
  .search-toggle-btn {
    width: 32px;
    height: 32px;
    min-width: 32px;
    min-height: 32px;
  }
  
  .search-toggle-btn svg {
    width: 16px;
    height: 16px;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .stat-card {
    padding: 1rem;
  }
  
  .stat-value {
    font-size: 1.5rem;
  }
  
  .token-container {
    max-height: 150px;
    font-size: 0.8rem;
  }
  
  .token {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
  }
  
  .token-search-container {
    padding: 1rem;
  }
  
  .token-search-row {
    flex-direction: column;
    gap: 1rem;
  }
  
  .token-search-controls {
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  .token-search-btn {
    flex: 1;
    min-width: 60px;
  }
  
  .token-search-count {
    order: -1;
    width: 100%;
    text-align: center;
    margin-bottom: 0.5rem;
  }
  
  .token-search-input {
    font-size: 16px; /* Prevents zoom on iOS */
  }
  
  .frequency-chart-container {
    margin-top: 1rem;
    padding: 0.75rem;
  }
  
  .frequency-chart-title {
    flex-direction: column;
    gap: 0.75rem;
    align-items: stretch;
    text-align: center;
  }
  
  .frequency-item {
    flex-direction: column;
    gap: 0.5rem;
    align-items: stretch;
  }
  
  .frequency-token {
    align-self: flex-start;
    min-width: auto;
  }
  
  .frequency-bar-container {
    width: 100%;
  }
  
  .tokenizer-info-tooltip {
    width: 280px;
    left: -50px;
  }
  
  .tokenizer-info-grid {
    grid-template-columns: 1fr;
  }
  
  .file-info {
    max-width: 200px;
    font-size: 0.8rem;
  }
  
  .loading-content {
    padding: 1.5rem;
    min-width: 150px;
  }
  
  .loading-text {
    font-size: 1rem;
  }
  
  .button-container {
    flex-direction: column;
    align-items: stretch;
  }
  
  button {
    padding: 1rem 2rem;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  body {
    padding: 0.5rem;
  }
  
  .title {
    font-size: 1.75rem;
  }
  
  .card {
    padding: 1rem;
  }
  
  .stat-card {
    padding: 0.75rem;
  }
  
  .token-container {
    padding: 0.75rem;
    gap: 0.25rem;
  }
  
  .token {
    padding: 0.2rem 0.4rem;
    font-size: 0.7rem;
  }
  
  .tokenizer-info-tooltip {
    width: 260px;
    left: -60px;
  }
  
  .frequency-chart-container {
    padding: 0.5rem;
  }
  
  .frequency-item {
    padding: 0.375rem;
  }
  
  .frequency-token {
    font-size: 0.7rem;
    padding: 0.2rem 0.4rem;
  }
}