.tdn-mock-app {
  min-height: 100vh;
  background: #f4f1e9;
  color: #20352d;
  font-family: "Be Vietnam Pro", sans-serif;
}

.tdn-mock-app button,
.tdn-mock-app input,
.tdn-mock-app textarea {
  font: inherit;
}

.tdn-mock-shell {
  width: min(960px, calc(100% - 28px));
  margin: 0 auto;
  padding: 20px 0 48px;
}

.tdn-mock-topbar,
.tdn-mock-exam-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  padding: 10px 16px;
  border: 1px solid #d9d3c6;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 6px 18px rgba(46, 55, 48, 0.06);
}

.tdn-mock-topbar button,
.tdn-mock-exam-header > button:first-child {
  border: 0;
  background: transparent;
  color: #405a50;
  cursor: pointer;
  font-weight: 700;
}

.tdn-mock-exam-title {
  text-align: center;
}

.tdn-mock-exam-title strong {
  display: block;
  font-size: 15px;
}

.tdn-mock-exam-title span {
  color: #66776f;
  font-size: 13px;
}

.tdn-mock-timer-wrap span {
  font-weight: 800;
  font-size: 18px;
  font-variant-numeric: tabular-nums;
}

.tdn-mock-timer-wrap span.is-warning {
  color: #b45309;
}

.tdn-mock-timer-wrap span.is-critical {
  color: #b91c1c;
}

.tdn-mock-kicker {
  color: #2f6b55;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tdn-mock-hero,
.tdn-mock-transition-card,
.tdn-mock-result-hero {
  margin-top: 20px;
  padding: 28px;
  border-radius: 22px;
  background: #fff;
  border: 1px solid #e6dfd1;
  box-shadow: 0 10px 28px rgba(46, 55, 48, 0.06);
}

.tdn-mock-hero h1,
.tdn-mock-transition-card h1,
.tdn-mock-result-hero h1 {
  margin: 10px 0 12px;
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1.2;
}

.tdn-mock-intro-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0;
}

.tdn-mock-intro-grid div {
  padding: 14px;
  border-radius: 14px;
  background: #f8f5ef;
}

.tdn-mock-intro-grid strong {
  display: block;
  font-size: 18px;
}

.tdn-mock-intro-grid span {
  color: #66776f;
  font-size: 13px;
}

.tdn-mock-note,
.tdn-mock-last-score {
  font-size: 14px;
  color: #55655d;
}

.tdn-mock-intro-actions,
.tdn-mock-result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.tdn-mock-primary,
.tdn-mock-secondary {
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 0;
  cursor: pointer;
  font-weight: 800;
}

.tdn-mock-primary {
  background: #2f6b55;
  color: #fff;
}

.tdn-mock-secondary {
  background: #fff;
  color: #2f6b55;
  border: 1px solid #c8ddd3;
}

.tdn-mock-question-map {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}

.tdn-mock-nav-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid #d9d3c6;
  background: #fff;
  cursor: pointer;
  font-weight: 700;
}

.tdn-mock-nav-btn.is-active {
  border-color: #2f6b55;
  background: #e8f3ed;
}

.tdn-mock-nav-btn.is-answered {
  background: #f0f7f3;
}

.tdn-mock-nav-btn.is-flagged {
  box-shadow: inset 0 0 0 2px #f59e0b;
}

.tdn-mock-question-card,
.tdn-mock-review-card,
.tdn-mock-advice-card {
  padding: 24px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid #e6dfd1;
}

.tdn-mock-question-card h2,
.tdn-mock-review-card h2 {
  margin: 12px 0 16px;
  font-size: clamp(18px, 3vw, 22px);
  line-height: 1.45;
}

.tdn-mock-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  color: #66776f;
}

.tdn-mock-flag {
  margin-left: auto;
  border: 1px solid #d9d3c6;
  background: #fff;
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 12px;
}

.tdn-mock-flag.is-on {
  border-color: #f59e0b;
  background: #fffbeb;
}

.tdn-mock-choices {
  display: grid;
  gap: 10px;
}

.tdn-mock-choice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  text-align: left;
  padding: 14px 16px;
  border: 1px solid #d9d3c6;
  border-radius: 14px;
  background: #fff;
  cursor: pointer;
}

.tdn-mock-choice.is-selected {
  border-color: #2f6b55;
  background: #edf7f1;
}

.tdn-mock-choice b {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: #eef2ef;
}

.tdn-mock-short-input,
.tdn-mock-textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #d9d3c6;
  border-radius: 14px;
  background: #fff;
}

.tdn-mock-textarea {
  min-height: 140px;
  resize: vertical;
}

.tdn-mock-exam-footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
}

.tdn-mock-exam-footer button {
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid #c8d5ce;
  background: #fff;
  color: #20352d;
  cursor: pointer;
  font-weight: 800;
}

.tdn-mock-exam-footer button:disabled {
  cursor: not-allowed;
  opacity: 1;
  color: #4a5f56;
  background: #f3f0ea;
  border-color: #ddd7cb;
}

.tdn-mock-exam-footer .tdn-mock-secondary {
  background: #fff;
  color: #2f6b55;
  border: 1px solid #c8ddd3;
}

.tdn-mock-exam-footer .tdn-mock-primary {
  justify-self: end;
  background: #2f6b55;
  color: #fff;
  border-color: #2f6b55;
}

.tdn-mock-exam-footer .tdn-mock-primary:disabled {
  background: #2f6b55;
  color: #fff;
  opacity: 0.72;
}

.tdn-mock-visual img {
  max-width: 100%;
  border-radius: 12px;
  margin: 12px 0;
}

.tdn-mock-transition-shell {
  display: grid;
  place-items: center;
  min-height: 70vh;
}

.tdn-mock-transition-card {
  max-width: 520px;
  text-align: center;
}

.tdn-mock-result-hero {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: center;
}

.tdn-mock-score-ring {
  width: 120px;
  height: 120px;
  border-radius: 999px;
  display: grid;
  place-content: center;
  text-align: center;
  background: #edf7f1;
  border: 4px solid #2f6b55;
}

.tdn-mock-score-ring strong {
  font-size: 36px;
  line-height: 1;
}

.tdn-mock-section-results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.tdn-mock-section-card {
  padding: 16px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid #e6dfd1;
}

.tdn-mock-section-card strong {
  display: block;
  font-size: 22px;
  margin-top: 4px;
}

.tdn-mock-review-feedback {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 14px;
  background: #f8f5ef;
}

.tdn-mock-review-feedback.is-correct {
  background: #edf7f1;
}

.tdn-mock-review-feedback.is-wrong {
  background: #fef2f2;
}

.tdn-mock-review-answer p {
  margin: 8px 0 0;
  white-space: pre-wrap;
}

.tdn-mock-review-practice a,
.tdn-mock-advice-topic a {
  color: #2f6b55;
  font-weight: 700;
}

.tdn-mock-advice-topic {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid #e6dfd1;
}

.tdn-mock-set-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 12px 0 4px;
  padding: 12px 14px;
  border-radius: 14px;
  background: linear-gradient(135deg, #edf7f1, #f8f5ef);
  border: 1px solid #c8ddd3;
}

.tdn-mock-set-cta p {
  margin: 0;
  flex: 1 1 200px;
  font-size: 14px;
  line-height: 1.45;
}

.tdn-mock-set-cta button,
.tdn-mock-set-cta a.button-link {
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 0;
  background: #2f6b55;
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.tdn-mock-set-cta .is-secondary {
  background: #fff;
  color: #2f6b55;
  border: 1px solid #c8ddd3;
}

@media (max-width: 720px) {
  .tdn-mock-intro-grid,
  .tdn-mock-section-results {
    grid-template-columns: 1fr;
  }

  .tdn-mock-result-hero {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .tdn-mock-exam-footer {
    grid-template-columns: 1fr;
  }

  .tdn-mock-exam-footer .tdn-mock-primary {
    justify-self: stretch;
  }
}