:root {
  --tt-primary: #0d6efd;
  --tt-success: #198754;
  --tt-danger: #dc3545;
  --tt-warning: #ffc107;
  --tt-dark: #212529;
  --tt-light-bg: #f8f9fa;
  --tt-white: #ffffff;
  --tt-text-primary: #212529;
  --tt-text-secondary: #6c757d;
  --tt-border-color: #dee2e6;
  --tt-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --tt-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --tt-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
  --tt-radius: 12px;
  --tt-radius-lg: 16px;
  --tt-transition: all 0.3s ease;
}

[data-theme="dark"] {
  --tt-text-primary: #f8f9fa;
  --tt-text-secondary: #adb5bd;
  --tt-light-bg: #212529;
  --tt-border-color: #495057;
  --tt-white: #343a40;
}

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

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--tt-light-bg);
  color: var(--tt-text-primary);
  transition: var(--tt-transition);
}

.tt-page-layout {
  display: grid;
  align-items: start;
  min-height: 100vh;
}

.tt-app-column {
  min-width: 0;
  overflow: hidden;
}

.tt-promo-column {
  min-width: 0;
  min-height: 100vh;
  padding: 20px;
  border-left: 1px solid var(--tt-border-color);
}

.tt-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  min-height: 100vh;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.tt-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--tt-border-color);
}

.tt-header-left {
  display: flex;
  align-items: center;
  gap: 15px;
}

.tt-logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--tt-primary) 0%, #0854ca 100%);
  border-radius: var(--tt-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tt-white);
  font-weight: bold;
  font-size: 20px;
  box-shadow: var(--tt-shadow-sm);
}

.tt-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--tt-text-primary);
  margin: 0;
}

.tt-header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.tt-btn {
  padding: 8px 16px;
  border: none;
  border-radius: var(--tt-radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--tt-transition);
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  white-space: nowrap;
  background-color: var(--tt-primary);
  color: var(--tt-white);
  box-shadow: var(--tt-shadow-sm);
}

.tt-btn:hover {
  background-color: #0b5ed7;
  transform: translateY(-2px);
  box-shadow: var(--tt-shadow-md);
}

.tt-btn:active {
  transform: translateY(0);
}

.tt-btn-secondary {
  background-color: transparent;
  color: var(--tt-text-primary);
  border: 1px solid var(--tt-border-color);
}

.tt-btn-secondary:hover {
  background-color: var(--tt-light-bg);
  border-color: var(--tt-primary);
}

.tt-btn-success {
  background-color: var(--tt-success);
}

.tt-btn-success:hover {
  background-color: #157347;
}

.tt-btn-danger {
  background-color: var(--tt-danger);
}

.tt-btn-danger:hover {
  background-color: #bd2130;
}

.tt-btn-warning {
  background-color: var(--tt-warning);
  color: var(--tt-text-primary);
}

.tt-btn-warning:hover {
  background-color: #ffb81c;
}

.tt-toggle-btn {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--tt-text-primary);
  transition: var(--tt-transition);
}

.tt-toggle-btn:hover {
  transform: scale(1.1);
  color: var(--tt-primary);
}

.tt-stats-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 15px;
  margin-bottom: 30px;
}

.tt-stat-card {
  background: var(--tt-white);
  padding: 20px;
  border-radius: var(--tt-radius);
  box-shadow: var(--tt-shadow-sm);
  text-align: center;
  transition: var(--tt-transition);
  border-top: 3px solid var(--tt-primary);
}

.tt-stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--tt-shadow-md);
}

.tt-stat-label {
  font-size: 12px;
  color: var(--tt-text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.tt-stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--tt-primary);
  font-family: 'Monaco', 'Menlo', monospace;
}

.tt-typing-area {
  background: var(--tt-white);
  padding: 40px;
  border-radius: var(--tt-radius-lg);
  box-shadow: var(--tt-shadow-md);
  margin-bottom: 30px;
  min-height: 200px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: visible;
}

.tt-typing-area::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--tt-border-color), transparent);
}

.tt-paragraph {
  font-size: var(--tt-fontSize, 20px);
  line-height: 1.8;
  color: var(--tt-text-primary);
  font-family: 'Segoe UI', 'Roboto', sans-serif;
  letter-spacing: 0.3px;
  text-align: justify;
  width: 100%;
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

.tt-lang-hindi .tt-paragraph {
  font-family: 'Nirmala UI', 'Noto Sans Devanagari', 'Mangal', sans-serif;
  line-height: 2.2;
  letter-spacing: 0;
}

.tt-char {
  position: relative;
  transition: var(--tt-transition);
}

.tt-char.tt-correct {
  color: var(--tt-success);
  background-color: rgba(25, 135, 84, 0.1);
}

.tt-char.tt-incorrect {
  color: var(--tt-danger);
  background-color: rgba(220, 53, 69, 0.1);
  text-decoration: underline wavy var(--tt-danger);
}

.tt-char.tt-current {
  background-color: var(--tt-primary);
  color: var(--tt-white);
  border-radius: 2px;
  padding: 0 2px;
  animation: tt-cursor-blink 1s infinite;
}

.tt-char.tt-space.tt-incorrect::after {
  content: '·';
  color: var(--tt-danger);
  font-weight: bold;
}

.tt-char.tt-space.tt-correct::after {
  content: '·';
  color: var(--tt-success);
  opacity: 0.5;
}

.tt-hidden-input {
  position: absolute;
  left: -9999px;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}

.tt-control-panel {
  display: flex;
  gap: 10px;
  margin-bottom: 30px;
  flex-wrap: wrap;
  justify-content: center;
}

.tt-control-panel .tt-btn {
  min-width: 100px;
}

.tt-main-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 30px;
  flex: 1;
  margin-bottom: 30px;
}

.tt-keyboard-container {
  background: var(--tt-white);
  padding: 20px;
  border-radius: var(--tt-radius);
  box-shadow: var(--tt-shadow-sm);
}

.tt-keyboard-label {
  font-size: 12px;
  color: var(--tt-text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 15px;
  letter-spacing: 0.5px;
}

.tt-keyboard {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tt-key-row {
  display: flex;
  gap: 4px;
  justify-content: center;
}

.tt-key {
  min-width: 30px;
  height: 30px;
  padding: 4px;
  background-color: var(--tt-light-bg);
  border: 1px solid var(--tt-border-color);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 500;
  cursor: default;
  transition: var(--tt-transition);
  user-select: none;
  color: var(--tt-text-primary);
}

.tt-key.tt-key-wide {
  flex: 1;
}

.tt-key.tt-key-special {
  background-color: var(--tt-text-secondary);
  color: var(--tt-white);
  border-color: var(--tt-text-secondary);
}

.tt-key.tt-key-pressed {
  background-color: var(--tt-primary);
  color: var(--tt-white);
  border-color: var(--tt-primary);
  transform: scale(0.95);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.tt-key.tt-key-correct {
  background-color: var(--tt-success);
  color: var(--tt-white);
  border-color: var(--tt-success);
}

.tt-key.tt-key-error {
  background-color: var(--tt-danger);
  color: var(--tt-white);
  border-color: var(--tt-danger);
  animation: tt-key-flash 0.3s ease;
}

.tt-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.tt-tips-card {
  background: var(--tt-white);
  padding: 20px;
  border-radius: var(--tt-radius);
  box-shadow: var(--tt-shadow-sm);
}

.tt-tips-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--tt-text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tt-tips-list {
  list-style: none;
  font-size: 13px;
  color: var(--tt-text-secondary);
  line-height: 1.6;
}

.tt-tips-list li {
  padding: 6px 0;
  display: flex;
  gap: 8px;
}

.tt-tips-list li::before {
  content: '→';
  color: var(--tt-primary);
  font-weight: bold;
  flex-shrink: 0;
}

.tt-result-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.tt-result-modal.tt-show {
  display: flex;
}

.tt-result-content {
  background: var(--tt-white);
  padding: 40px;
  border-radius: var(--tt-radius-lg);
  max-width: 500px;
  width: 100%;
  box-shadow: var(--tt-shadow-lg);
  animation: tt-modal-slide-up 0.3s ease;
}

.tt-result-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 20px;
  text-align: center;
  color: var(--tt-text-primary);
}

.tt-result-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  margin-bottom: 25px;
}

.tt-result-stat {
  padding: 15px;
  background-color: var(--tt-light-bg);
  border-radius: var(--tt-radius);
  text-align: center;
}

.tt-result-stat-label {
  font-size: 12px;
  color: var(--tt-text-secondary);
  margin-bottom: 5px;
  text-transform: uppercase;
  font-weight: 600;
}

.tt-result-stat-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--tt-primary);
  font-family: 'Monaco', 'Menlo', monospace;
}

.tt-rating-section {
  text-align: center;
  margin-bottom: 25px;
  padding: 20px;
  background: linear-gradient(135deg, rgba(13, 110, 253, 0.1), rgba(25, 135, 84, 0.1));
  border-radius: var(--tt-radius);
}

.tt-rating-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--tt-primary);
  margin-bottom: 10px;
}

.tt-rating-badge {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--tt-primary);
  color: var(--tt-white);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}

.tt-result-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.tt-result-actions .tt-btn {
  flex: 1;
  min-width: 120px;
  justify-content: center;
}

.tt-settings-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.tt-settings-modal.tt-show {
  display: flex;
}

.tt-settings-content {
  background: var(--tt-white);
  padding: 30px;
  border-radius: var(--tt-radius-lg);
  max-width: 600px;
  width: 100%;
  box-shadow: var(--tt-shadow-lg);
  max-height: 80vh;
  overflow-y: auto;
  animation: tt-modal-slide-up 0.3s ease;
}

.tt-settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--tt-border-color);
}

.tt-settings-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--tt-text-primary);
}

.tt-close-btn {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--tt-text-secondary);
  transition: var(--tt-transition);
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tt-close-btn:hover {
  color: var(--tt-text-primary);
  background-color: var(--tt-light-bg);
  border-radius: var(--tt-radius);
}

.tt-settings-group {
  margin-bottom: 25px;
}

.tt-settings-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--tt-text-primary);
  margin-bottom: 10px;
  display: block;
}

.tt-settings-options {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tt-radio-btn {
  position: relative;
  cursor: pointer;
}

.tt-radio-btn input[type="radio"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.tt-radio-label {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px solid var(--tt-border-color);
  border-radius: var(--tt-radius);
  background-color: var(--tt-light-bg);
  cursor: pointer;
  transition: var(--tt-transition);
  font-size: 13px;
  font-weight: 500;
}

.tt-radio-btn input[type="radio"]:checked + .tt-radio-label {
  background-color: var(--tt-primary);
  color: var(--tt-white);
  border-color: var(--tt-primary);
}

.tt-checkbox-group {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background-color: var(--tt-light-bg);
  border-radius: var(--tt-radius);
}

.tt-checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--tt-primary);
}

.tt-checkbox-label {
  cursor: pointer;
  font-size: 14px;
  color: var(--tt-text-primary);
  flex: 1;
  margin: 0;
}

.tt-slider-group {
  display: flex;
  align-items: center;
  gap: 15px;
}

.tt-slider {
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: var(--tt-border-color);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.tt-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--tt-primary);
  cursor: pointer;
  transition: var(--tt-transition);
}

.tt-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.tt-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--tt-primary);
  cursor: pointer;
  border: none;
  transition: var(--tt-transition);
}

.tt-slider::-moz-range-thumb:hover {
  transform: scale(1.2);
}

.tt-slider-value {
  min-width: 50px;
  text-align: right;
  font-weight: 600;
  color: var(--tt-primary);
  font-family: 'Monaco', 'Menlo', monospace;
}

.tt-settings-footer {
  display: flex;
  gap: 10px;
  padding-top: 20px;
  border-top: 1px solid var(--tt-border-color);
  justify-content: flex-end;
}

.tt-leaderboard-card {
  background: var(--tt-white);
  padding: 20px;
  border-radius: var(--tt-radius);
  box-shadow: var(--tt-shadow-sm);
}

.tt-leaderboard-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--tt-text-primary);
}

.tt-leaderboard-list {
  list-style: none;
  font-size: 13px;
}

.tt-leaderboard-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--tt-border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tt-leaderboard-item:last-child {
  border-bottom: none;
}

.tt-leaderboard-rank {
  font-weight: 700;
  color: var(--tt-primary);
  min-width: 30px;
}

.tt-leaderboard-wpm {
  color: var(--tt-success);
  font-weight: 600;
}

.tt-empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--tt-text-secondary);
}

.tt-empty-state-icon {
  font-size: 48px;
  margin-bottom: 15px;
  opacity: 0.5;
}

.tt-empty-state-text {
  font-size: 14px;
}

@keyframes tt-cursor-blink {
  0%, 49% {
    opacity: 1;
  }
  50%, 100% {
    opacity: 0.3;
  }
}

@keyframes tt-modal-slide-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes tt-key-flash {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes tt-pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}