/* ============================================================
   TulBD Typing Modules Stylesheet v61
   Optimized Typography (24px Bengali / 23px English) & Refined UI
   ============================================================ */

:root {
  --tb-font-bn: 'Noto Sans Bengali', 'Inter', system-ui, -apple-system, sans-serif;
}

/* --- Container & Card --- */
.tb-typing-module {
  width: 100% !important;
  max-width: 100% !important;
  margin: 20px 0 32px !important;
  padding: 32px;
  background: var(--tb-card, #ffffff);
  border: 1px solid var(--tb-border, #e2e8f0);
  border-radius: var(--tb-radius-lg, 22px);
  box-shadow: var(--tb-shadow, 0 8px 28px rgba(20,40,80,.06));
  box-sizing: border-box !important;
}

/* --- Control Blocks & Labels --- */
.tb-section-label {
  display: block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--tb-muted, #667085);
  margin-bottom: 8px;
  text-align: center;
}

.tb-control-block {
  margin-bottom: 18px;
}

.tb-options,
.tb-times {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.tb-options button,
.tb-times button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--tb-radius-pill, 999px);
  border: 1px solid var(--tb-border, #e2e8f0);
  background: var(--tb-surface, #f8fafc);
  color: var(--tb-text-secondary, #475569);
  cursor: pointer;
  white-space: nowrap;
  min-width: max-content;
  flex: 0 0 auto;
  box-sizing: border-box;
  transition: all var(--tb-transition, .18s ease);
}

.tb-options button:hover,
.tb-times button:hover {
  border-color: var(--tb-primary, #1769e0);
  color: var(--tb-primary, #1769e0);
  background: var(--tb-primary-light, #eef5ff);
  transform: translateY(-1px);
}

.tb-options button.active,
.tb-times button.active {
  background: var(--tb-primary, #1769e0);
  border-color: var(--tb-primary, #1769e0);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(23, 105, 224, .25);
}

/* --- Model 1 Two-Column Grid --- */
.tb-model-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: start;
}

.tb-model-controls {
  background: var(--tb-surface, #f8fafc);
  border: 1px solid var(--tb-border, #e2e8f0);
  border-radius: var(--tb-radius, 16px);
  padding: 20px;
}

.tb-model-test {
  min-width: 0;
}

/* --- Model 2 Centered Settings Row --- */
.tb-model2 .tb2-settings {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 24px;
  text-align: center;
}

/* --- Stats Cards --- */
.tb-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.tb-stats span {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--tb-surface, #f8fafc);
  border: 1px solid var(--tb-border, #e2e8f0);
  border-radius: var(--tb-radius, 16px);
  padding: 14px 10px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--tb-muted, #667085);
  transition: transform var(--tb-transition, .18s ease), border-color var(--tb-transition, .18s ease);
}

.tb-stats span:hover {
  transform: translateY(-2px);
  border-color: var(--tb-border-hover, #b9cce7);
}

.tb-stats b {
  margin-top: 4px;
  font-size: 26px;
  font-weight: 800;
  color: var(--tb-text, #14213d);
  line-height: 1.15;
}

#tb-time, #tb2-time {
  color: var(--tb-primary, #1769e0);
}

#tb-wpm, #tb2-wpm {
  color: var(--tb-success, #16a34a);
}

#tb-acc, #tb2-acc {
  color: #0284c7;
}

/* --- Passage Display (24px Optimized Font Size) --- */
.tb-passage {
  width: 100%;
  height: 7.2em;
  max-height: 7.2em;
  min-height: 0;
  padding: 20px 24px;
  background: #f7faff;
  border: 1px solid #dbeafe;
  border-radius: var(--tb-radius, 16px);
  font-family: var(--tb-font-bn);
  font-size: 24px;
  line-height: 2.0;
  color: var(--tb-text, #14213d);
  overflow-y: auto;
  scrollbar-width: thin;
  white-space: pre-wrap;
  word-break: break-word;
  box-sizing: border-box;
  text-align: left;
  user-select: none;
  box-shadow: inset 0 1px 3px rgba(23, 105, 224, .04);
}

.tb-passage:focus {
  outline: 2px solid var(--tb-primary-glow, rgba(23, 105, 224, .25));
}

[data-lang="en"] .tb-passage {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 23px;
  line-height: 1.9;
}

.tb-passage span.tb-correct,
.tb-passage span.correct {
  color: var(--tb-success, #16a34a);
  font-weight: 600;
}

.tb-passage span.tb-wrong,
.tb-passage span.wrong {
  color: var(--tb-danger, #dc2626);
  background: var(--tb-danger-bg, #fef2f2);
  border-radius: 3px;
  text-decoration: underline;
  font-weight: 600;
}

.tb-passage span.tb-current,
.tb-passage span.current {
  background: #dbeafe;
  color: var(--tb-primary, #1769e0);
  border-radius: 4px;
  font-weight: 700;
  box-shadow: 0 0 0 2px rgba(23, 105, 224, .3);
}

.tb-passage span.is-space.tb-current,
.tb-passage span.is-space.current {
  display: inline-block;
  min-width: 0.5em;
}

/* --- Live Feedback & Input Wrap --- */
.typing-input-wrap {
  position: relative;
  width: 100%;
  min-height: 180px;
  margin: 18px 0;
  border-radius: var(--tb-radius, 16px);
  overflow: hidden;
  background: #ffffff;
  border: 1px solid var(--tb-border, #e2e8f0);
  transition: border-color var(--tb-transition, .18s ease), box-shadow var(--tb-transition, .18s ease);
}

.typing-input-wrap:focus-within {
  border-color: var(--tb-primary, #1769e0);
  box-shadow: 0 0 0 3px var(--tb-primary-glow, rgba(23, 105, 224, .18));
}

.typing-input-wrap textarea {
  position: relative;
  z-index: 2;
  display: block;
  width: 100%;
  min-height: 180px;
  margin: 0 !important;
  padding: 20px 24px !important;
  font-family: var(--tb-font-bn) !important;
  font-size: 24px !important;
  line-height: 2.0 !important;
  background: transparent !important;
  color: transparent !important;
  -webkit-text-fill-color: transparent !important;
  caret-color: transparent !important;
  border: none !important;
  outline: none !important;
  resize: vertical;
  box-sizing: border-box;
}

.typing-input-wrap textarea.tb-hide-caret {
  caret-color: transparent !important;
}

.tb-fake-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  margin-bottom: -0.15em;
  background: var(--tb-text, #14213d);
  animation: tb-blink 1s step-end infinite;
  vertical-align: baseline;
}

@keyframes tb-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.typing-input-wrap textarea::selection {
  background: transparent;
}

.typing-input-wrap textarea::-moz-selection {
  background: transparent;
}

[data-lang="en"] .typing-input-wrap textarea {
  font-family: 'Inter', system-ui, sans-serif !important;
  font-size: 23px !important;
  line-height: 1.9 !important;
}

.typing-input-wrap textarea::placeholder {
  color: transparent !important;
  -webkit-text-fill-color: transparent !important;
}

.typing-mirror {
  position: absolute;
  z-index: 1;
  inset: 0;
  padding: 20px 24px;
  box-sizing: border-box;
  font-family: var(--tb-font-bn);
  font-size: 24px;
  line-height: 2.0;
  white-space: pre-wrap;
  overflow: auto;
  overflow-wrap: break-word;
  word-break: break-word;
  text-align: left;
  pointer-events: none;
  background: #ffffff;
  border-radius: var(--tb-radius, 16px);
  color: var(--tb-text, #14213d);
}

[data-lang="en"] .typing-mirror {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 23px;
  line-height: 1.9;
}

.typing-mirror .typing-hint {
  color: var(--tb-muted, #667085);
  font-style: italic;
  font-size: 20px;
}

.typing-mirror .correct {
  color: var(--tb-success, #16a34a) !important;
  -webkit-text-fill-color: var(--tb-success, #16a34a) !important;
  font-weight: 600;
}

.typing-mirror .wrong {
  color: var(--tb-danger, #dc2626) !important;
  -webkit-text-fill-color: var(--tb-danger, #dc2626) !important;
  background: var(--tb-danger-bg, #fef2f2);
  border-radius: 2px;
}

/* --- Action Buttons --- */
.tb-model-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.tb-model-actions button,
#tb-start,
#tb-stop,
#tb2-start,
#tb2-stop {
  min-height: 46px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--tb-radius-pill, 999px);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--tb-transition, .18s ease);
}

#tb-start,
#tb2-start {
  background: var(--tb-primary, #1769e0);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(23, 105, 224, .25);
  min-width: 170px;
}

#tb-start:hover:not(:disabled),
#tb2-start:hover:not(:disabled) {
  background: var(--tb-primary-hover, #1256bd);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(23, 105, 224, .32);
}

#tb-stop,
#tb2-stop {
  background: #ffffff;
  color: var(--tb-danger, #dc2626);
  border-color: #fca5a5;
}

#tb-stop:hover:not(:disabled),
#tb2-stop:hover:not(:disabled) {
  border-color: var(--tb-danger, #dc2626);
  color: #ffffff;
  background: var(--tb-danger, #dc2626);
}

button:disabled,
#tb-start:disabled,
#tb-stop:disabled,
#tb2-start:disabled,
#tb2-stop:disabled {
  opacity: .5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* --- Results Card --- */
#tb-result,
#tb2-result {
  margin-top: 20px;
  min-height: 0;
}

.tb-result-card {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 20px;
  background: var(--tb-surface, #f8fafc);
  border: 1px solid var(--tb-border, #e2e8f0);
  border-radius: var(--tb-radius, 16px);
  text-align: center;
  box-shadow: var(--tb-shadow-sm, 0 2px 8px rgba(20,40,80,.04));
}

.tb-result-card small {
  display: block;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--tb-muted, #667085);
  margin-bottom: 4px;
}

.tb-result-card b {
  font-size: 24px;
  font-weight: 800;
  color: var(--tb-text, #14213d);
}

/* --- Legend & Help --- */
.tb-typing-legend {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--tb-border, #e2e8f0);
  font-size: 13px;
  font-weight: 600;
  color: var(--tb-text-secondary, #475569);
}

.tb-typing-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tb-typing-legend i {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.tb-typing-legend i.correct {
  background: var(--tb-success, #16a34a);
}

.tb-typing-legend i.wrong {
  background: var(--tb-danger, #dc2626);
}

.tb-typing-legend i.current {
  background: var(--tb-primary, #1769e0);
}

.tb-practice-help {
  width: 100% !important;
  max-width: 100% !important;
  margin: 0 0 32px !important;
  padding: 24px 28px;
  background: var(--tb-card, #ffffff);
  border: 1px solid var(--tb-border, #e2e8f0);
  border-radius: var(--tb-radius, 16px);
  box-shadow: var(--tb-shadow-sm, 0 2px 8px rgba(20,40,80,.04));
  box-sizing: border-box !important;
}

.tb-practice-help h3 {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 800;
  color: var(--tb-text, #14213d);
}

.tb-practice-help ul {
  margin: 0;
  padding-left: 20px;
  color: var(--tb-text-secondary, #475569);
  line-height: 1.7;
}

.tb-practice-help li {
  margin-bottom: 6px;
}

/* ============================================================
   English Typing Speed Test (Homepage-style Module)
   ============================================================ */
.home-typing-model.english-typing-speed-module {
  width: 100% !important;
  max-width: 100% !important;
  margin: 20px 0 32px !important;
  padding: 32px;
  background: var(--tb-card, #ffffff);
  border: 1px solid var(--tb-border, #e2e8f0);
  border-radius: var(--tb-radius-lg, 22px);
  box-shadow: var(--tb-shadow, 0 8px 28px rgba(20,40,80,.06));
  box-sizing: border-box !important;
}

/* ============================================================
   Responsive Breakpoints
   ============================================================ */
@media (max-width: 900px) {
  .tb-model-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .tb-typing-module {
    padding: 24px;
  }
}

@media (max-width: 650px) {
  .tb-typing-module {
    padding: 18px 14px;
    border-radius: var(--tb-radius, 16px);
  }
  .tb-options button,
  .tb-times button {
    padding: 8px 16px;
    font-size: 13px;
    min-width: max-content;
    white-space: nowrap;
    flex: 0 0 auto;
  }
  .tb-passage {
    font-size: 20px !important;
    line-height: 1.85 !important;
    padding: 14px !important;
  }
  .typing-input-wrap textarea,
  .typing-mirror {
    font-size: 20px !important;
    line-height: 1.85 !important;
    padding: 14px !important;
    min-height: 150px;
  }
  .typing-input-wrap {
    min-height: 150px;
  }
  .tb-stats b {
    font-size: 20px;
  }
  .tb-result-card {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    padding: 14px;
  }
  .tb-result-card div:first-child {
    grid-column: auto;
  }
  .tb-result-card b {
    font-size: 20px;
  }
  .tb-model-actions button,
  #tb-start,
  #tb-stop,
  #tb2-start,
  #tb2-stop {
    flex: 1;
    min-width: 0;
    padding: 10px 14px;
  }
}