/* Practice Tests - AWS CCP Quiz */

.pt-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 20px;
}

/* ---- Subject selection ---- */

.pt-subject-card {
  background: var(--bg-tile, #f8f9fa);
  border: 1px solid var(--bg-accent, #dee2e6);
  border-radius: 10px;
  padding: 48px 40px;
  text-align: center;
}

.pt-subject-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-top: 28px;
}

.pt-subject-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: min(240px, 80vw);
}

.pt-subject-btn img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.18);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: block;
}

.pt-subject-btn:hover img {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 28px rgba(0,0,0,0.26);
}

.pt-subject-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-heading, #2c3e50);
  text-align: center;
  line-height: 1.3;
}

/* ---- Test set selection ---- */

.pt-select-card {
  background: var(--bg-tile, #f8f9fa);
  border: 1px solid var(--bg-accent, #dee2e6);
  border-radius: 10px;
  padding: 32px 40px 40px;
}

.pt-back-btn {
  margin-bottom: 16px;
  font-size: 0.85rem;
  padding: 6px 14px;
}

/* ---- Radio group ---- */

.pt-radio-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 24px 0;
}

.pt-radio-section {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--bg-accent, #dee2e6);
}

.pt-section-label {
  display: block;
  padding: 8px 16px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.pt-section-easy   .pt-section-label { background: rgba(39,174,96,0.12);  color: #27ae60; border-bottom: 1px solid rgba(39,174,96,0.2); }
.pt-section-medium .pt-section-label { background: rgba(230,126,34,0.12); color: #e67e22; border-bottom: 1px solid rgba(230,126,34,0.2); }
.pt-section-hard   .pt-section-label { background: rgba(192,57,43,0.12);  color: #c0392b; border-bottom: 1px solid rgba(192,57,43,0.2); }

.pt-radio-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  background: var(--bg-page, #fff);
  transition: background 0.12s;
  font-size: 0.95rem;
  color: var(--text-main, #444);
}

.pt-radio-option + .pt-radio-option {
  border-top: 1px solid var(--bg-accent, #dee2e6);
}

.pt-radio-option:hover {
  background: var(--bg-accent, #f0f1f2);
}

.pt-radio-option input[type="radio"] {
  accent-color: #3498db;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  cursor: pointer;
}

.pt-radio-label {
  flex: 1;
}

/* ---- Select footer ---- */

.pt-select-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--bg-accent, #dee2e6);
  flex-wrap: wrap;
}

/* ---- Landing (shared title/subtitle) ---- */

.pt-landing-card {
  background: var(--bg-tile, #f8f9fa);
  border: 1px solid var(--bg-accent, #dee2e6);
  border-radius: 10px;
  padding: 48px 40px;
  text-align: center;
}

.pt-landing-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--text-heading, #2c3e50);
  margin-bottom: 8px;
}

.pt-landing-subtitle {
  color: var(--text-main, #555);
  font-size: 0.95rem;
  margin-bottom: 32px;
}

.pt-landing-category {
  margin-bottom: 20px;
  text-align: left;
  display: inline-block;
  width: 100%;
  max-width: 380px;
}

.pt-landing-category label {
  display: block;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-main, #555);
  margin-bottom: 6px;
}

.pt-select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--bg-accent, #dee2e6);
  border-radius: 6px;
  background: var(--bg-page, #fff);
  color: var(--text-heading, #2c3e50);
  font-size: 0.95rem;
  cursor: pointer;
}

.pt-select:focus {
  outline: 2px solid #3498db;
  outline-offset: 1px;
}

/* Difficulty badge shown next to selected set name */
.pt-difficulty-badge {
  display: inline-block;
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 3px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-left: 8px;
  vertical-align: middle;
}

.pt-difficulty-badge.easy   { background: rgba(39,174,96,0.15);  color: #27ae60; }
.pt-difficulty-badge.medium { background: rgba(230,126,34,0.15); color: #e67e22; }
.pt-difficulty-badge.hard   { background: rgba(192,57,43,0.15);  color: #c0392b; }

.pt-landing-options {
  margin: 20px auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

/* Toggle switch */
.pt-toggle-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  color: var(--text-main, #555);
  font-size: 0.9rem;
}

.pt-toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
}

.pt-toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.pt-toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-accent, #ccc);
  border-radius: 24px;
  transition: background 0.2s;
  cursor: pointer;
}

.pt-toggle-slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  top: 3px;
  background: white;
  border-radius: 50%;
  transition: transform 0.2s;
}

.pt-toggle-switch input:checked + .pt-toggle-slider {
  background: #2ecc71;
}

.pt-toggle-switch input:checked + .pt-toggle-slider::before {
  transform: translateX(20px);
}

/* ---- Buttons ---- */

.pt-btn {
  padding: 10px 26px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.18s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pt-btn-primary {
  background: #2ecc71;
  color: #fff;
}

.pt-btn-primary:hover:not(:disabled) {
  background: #27ae60;
  transform: translateY(-1px);
}

.pt-btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.pt-btn-secondary {
  background: var(--bg-accent, #e9ecef);
  color: var(--text-heading, #2c3e50);
}

.pt-btn-secondary:hover {
  background: #d0d4d9;
  transform: translateY(-1px);
}

.pt-btn-ghost {
  background: transparent;
  color: var(--text-main, #555);
  border: 1px solid var(--bg-accent, #dee2e6);
}

.pt-btn-ghost:hover {
  background: var(--bg-accent, #e9ecef);
}

/* ---- Question Header ---- */

.pt-question-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  gap: 12px;
}

.pt-progress-text {
  color: var(--text-main, #555);
  font-size: 0.88rem;
  white-space: nowrap;
}

.pt-timer {
  font-variant-numeric: tabular-nums;
  color: var(--text-main, #555);
  font-size: 0.88rem;
  white-space: nowrap;
  font-family: monospace;
  letter-spacing: 0.03em;
}

.pt-progress-bar-wrap {
  height: 4px;
  background: var(--bg-accent, #dee2e6);
  border-radius: 2px;
  margin-bottom: 18px;
  overflow: hidden;
}

.pt-progress-bar {
  height: 100%;
  background: #2ecc71;
  border-radius: 2px;
  transition: width 0.3s ease;
  width: 0%;
}

/* ---- Question Card ---- */

.pt-question-card {
  background: var(--bg-tile, #f8f9fa);
  border: 1px solid var(--bg-accent, #dee2e6);
  border-radius: 10px;
  padding: 32px;
}

.pt-type-badge {
  font-size: 0.75rem;
  color: var(--text-main, #888);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 10px 0;
}

.pt-domain-badge {
  display: inline-block;
  font-size: 0.72rem;
  padding: 2px 8px;
  background: rgba(52,152,219,0.12);
  color: #2980b9;
  border-radius: 3px;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.pt-question-text {
  font-size: 1.05rem;
  color: var(--text-heading, #2c3e50);
  line-height: 1.65;
  margin-bottom: 24px;
}

/* ---- Choices ---- */

.pt-choices {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.pt-choice {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 16px;
  background: var(--bg-page, #fff);
  border: 2px solid var(--bg-accent, #dee2e6);
  border-radius: 7px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  line-height: 1.5;
  font-size: 0.95rem;
  color: var(--text-main, #444);
  user-select: none;
}

.pt-choice input[type="radio"],
.pt-choice input[type="checkbox"] {
  margin-top: 3px;
  flex-shrink: 0;
  accent-color: #2ecc71;
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.pt-choice:hover:not(.pt-choice-disabled) {
  border-color: #3498db;
  background: rgba(52,152,219,0.04);
}

.pt-choice.pt-choice-selected {
  border-color: #3498db;
  background: rgba(52,152,219,0.06);
}

.pt-choice.pt-choice-correct {
  border-color: #2ecc71;
  background: rgba(46,204,113,0.08);
}

.pt-choice.pt-choice-wrong {
  border-color: #e74c3c;
  background: rgba(231,76,60,0.07);
}

.pt-choice.pt-choice-missed {
  border-color: #2ecc71;
  background: rgba(46,204,113,0.04);
  opacity: 0.8;
}

.pt-choice.pt-choice-disabled {
  cursor: default;
  pointer-events: none;
}

.pt-choice-key {
  font-weight: 700;
  color: var(--text-heading, #2c3e50);
  min-width: 18px;
  flex-shrink: 0;
}

/* ---- Explanation ---- */

.pt-explanation {
  margin-top: 16px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--bg-accent, #dee2e6);
}

.pt-explanation-item {
  padding: 14px 18px;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-main, #444);
}

.pt-explanation-item + .pt-explanation-item {
  border-top: 1px solid var(--bg-accent, #dee2e6);
}

.pt-explanation-item.pt-exp-correct {
  background: rgba(46,204,113,0.07);
  border-left: 3px solid #2ecc71;
}

.pt-explanation-item.pt-exp-wrong {
  background: rgba(231,76,60,0.05);
  border-left: 3px solid #e74c3c;
}

.pt-explanation-item.pt-exp-neutral {
  background: var(--bg-page, #fff);
  border-left: 3px solid var(--bg-accent, #aaa);
}

.pt-explanation-label {
  font-weight: 700;
  margin-right: 6px;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pt-reference {
  padding: 10px 18px;
  font-size: 0.82rem;
  background: var(--bg-page, #fafafa);
  border-top: 1px solid var(--bg-accent, #dee2e6);
  color: var(--text-main, #666);
}

.pt-reference a {
  color: #3498db;
  text-decoration: none;
}

.pt-reference a:hover {
  text-decoration: underline;
}

/* ---- Result banner ---- */

.pt-result-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 14px;
  font-weight: 600;
  font-size: 0.95rem;
}

.pt-result-banner.correct {
  background: rgba(46,204,113,0.12);
  color: #1e8449;
  border: 1px solid rgba(46,204,113,0.3);
}

.pt-result-banner.incorrect {
  background: rgba(231,76,60,0.1);
  color: #c0392b;
  border: 1px solid rgba(231,76,60,0.3);
}

/* ---- Question Actions ---- */

.pt-question-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
}

/* ---- Keyboard hint ---- */

.pt-keyboard-hint {
  text-align: center;
  margin-top: 14px;
  font-size: 0.78rem;
  color: var(--text-main, #888);
  opacity: 0.75;
}

.pt-keyboard-hint kbd {
  display: inline-block;
  padding: 2px 7px;
  border: 1px solid var(--bg-accent, #ccc);
  border-radius: 3px;
  font-family: monospace;
  font-size: 0.85em;
  background: var(--bg-page, #f5f5f5);
}

/* ---- Summary ---- */

.pt-summary-card {
  background: var(--bg-tile, #f8f9fa);
  border: 1px solid var(--bg-accent, #dee2e6);
  border-radius: 10px;
  padding: 48px 40px;
  text-align: center;
}

.pt-summary-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--text-heading, #2c3e50);
  margin-bottom: 6px;
}

.pt-summary-set-label {
  font-size: 0.85rem;
  color: var(--text-main, #888);
  margin-bottom: 32px;
}

.pt-summary-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin: 0 auto 36px;
  flex-wrap: wrap;
}

.pt-stat-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.pt-stat-value {
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 700;
  color: var(--text-heading, #2c3e50);
}

.pt-stat-value.good { color: #27ae60; }
.pt-stat-value.ok   { color: #e67e22; }
.pt-stat-value.poor { color: #c0392b; }

.pt-stat-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-main, #888);
}

.pt-summary-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---- Mobile ---- */

@media (max-width: 768px) {
  .pt-landing-card,
  .pt-summary-card {
    padding: 28px 20px;
  }

  .pt-question-card {
    padding: 20px 16px;
  }

  .pt-summary-stats {
    gap: 28px;
  }

  .pt-keyboard-hint {
    display: none;
  }

  .pt-question-actions {
    flex-direction: column-reverse;
    align-items: stretch;
  }

  .pt-question-actions .pt-btn {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .pt-container {
    padding: 12px;
  }

  .pt-choice {
    padding: 10px 12px;
    font-size: 0.9rem;
  }
}