.onec-trainer-shell {
  padding-top: 32px;
  padding-bottom: 64px;
}

.onec-trainer-shell:has(.onec-trainer-panel--list) {
  max-width: min(100% - 2 * var(--sp6, 24px), 1360px);
}

.onec-trainer-app {
  min-height: 70vh;
}

.onec-trainer-empty,
.onec-trainer-panel,
.onec-trainer-card,
.onec-trainer-banner,
.onec-trainer-results {
  background: #fff;
  border: 1px solid rgba(1, 105, 111, 0.12);
  border-radius: 24px;
  box-shadow: 0 16px 40px rgba(1, 105, 111, 0.08);
}

.onec-trainer-empty,
.onec-trainer-banner,
.onec-trainer-results {
  padding: 24px;
}

.onec-trainer-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  gap: 12px;
  margin-bottom: 20px;
}

.onec-trainer-topbar > div:first-child {
  flex: 1 1 auto;
  min-width: 0;
}

.onec-trainer-topbar h1,
.onec-trainer-topbar h2,
.onec-trainer-panel h2,
.onec-trainer-panel h3 {
  margin: 0;
}

.onec-trainer-subtitle {
  color: rgba(24, 37, 39, 0.68);
  margin-top: 8px;
}

.onec-trainer-answer-head {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 10px;
}

.onec-trainer-answer-kind {
  color: rgba(24, 37, 39, 0.68);
  font-size: 0.98rem;
}

.onec-trainer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

@media (max-width: 780px) {
  .onec-trainer-grid {
    grid-template-columns: 1fr;
  }
}

.onec-trainer-tile {
  min-height: 96px;
  border-radius: 20px;
  border: 1px solid rgba(1, 105, 111, 0.14);
  background: linear-gradient(180deg, #ffd833 0%, #f2c400 100%);
  color: #1f1f1f;
  font-weight: 700;
  text-align: left;
  padding: 18px 20px;
  box-shadow: 0 10px 24px rgba(1, 105, 111, 0.08);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.onec-trainer-tile:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(1, 105, 111, 0.12);
}

.onec-trainer-panel {
  padding: 20px;
}

.onec-trainer-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.onec-trainer-topbar .onec-trainer-toolbar {
  flex-wrap: nowrap;
  margin-bottom: 0;
  flex: 0 0 auto;
}

.onec-trainer-chip,
.onec-trainer-button {
  border: 1px solid rgba(1, 105, 111, 0.16);
  background: #fff;
  color: #14363a;
  border-radius: 999px;
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.onec-trainer-button--primary,
.onec-trainer-chip--active {
  background: #01696f;
  color: #fff;
}

.onec-trainer-card {
  padding: 24px;
}

.onec-trainer-question-card {
  display: flex;
  flex-direction: column;
  min-height: 860px;
  box-sizing: border-box;
}

.onec-trainer-question-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.onec-trainer-question-card__scroll {
  flex: 0 0 auto;
  max-height: min(42vh, 360px);
  overflow-y: auto;
  margin-bottom: 12px;
  padding-right: 4px;
  -webkit-overflow-scrolling: touch;
}

.onec-trainer-answer-form {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.onec-trainer-answer-form .onec-trainer-options {
  flex: 1;
  min-height: 300px;
  align-content: start;
  margin-bottom: 0;
}

.onec-trainer-answer-form .onec-trainer-feedback-slot {
  flex-shrink: 0;
}

.onec-trainer-answer-form .onec-trainer-actions {
  margin-top: auto;
  margin-bottom: 0;
}

@media (max-width: 780px) {
  .onec-trainer-question-card {
    min-height: 720px;
  }

  .onec-trainer-answer-form .onec-trainer-options {
    min-height: 240px;
  }
}

.onec-trainer-question-text {
  font-size: 1.28rem;
  line-height: 1.55;
  margin: 0 0 18px;
  font-weight: 700;
  overflow-wrap: break-word;
  word-break: normal;
  hyphens: auto;
}

.onec-trainer-question-text br {
  line-height: 1.7;
}

.onec-trainer-image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 16px;
  border: 1px solid rgba(1, 105, 111, 0.12);
  margin: 0 0 16px;
}

.onec-trainer-options {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.onec-trainer-option {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 16px 18px;
  border-radius: 16px;
  border: 1px solid rgba(1, 105, 111, 0.15);
  background: #fff;
  cursor: pointer;
}

.onec-trainer-option input {
  width: 22px;
  height: 22px;
  margin: 0;
  flex: 0 0 auto;
}

.onec-trainer-option span {
  line-height: 1.45;
}

.onec-trainer-option--correct {
  background: rgba(76, 198, 103, 0.16);
  border-color: rgba(76, 198, 103, 0.42);
}

.onec-trainer-option--wrong {
  background: rgba(233, 81, 74, 0.12);
  border-color: rgba(233, 81, 74, 0.35);
}

.onec-trainer-feedback-slot {
  min-height: 2.5rem;
  display: flex;
  align-items: center;
  margin: 10px 0 14px;
}

.onec-trainer-feedback {
  margin: 0;
  padding: 8px 14px 8px 10px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
}

.onec-trainer-feedback::before {
  content: "";
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  flex: 0 0 1.25rem;
  background-position: center;
  background-repeat: no-repeat;
  background-size: 0.72rem 0.72rem;
}

.onec-trainer-feedback--good {
  background: rgba(76, 198, 103, 0.14);
  color: #1f6f33;
}

.onec-trainer-feedback--good::before {
  background-color: rgba(31, 111, 51, 0.14);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath fill='none' stroke='%231f6f33' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round' d='M2.5 6.2 5 8.7 9.5 3.8'/%3E%3C/svg%3E");
}

.onec-trainer-feedback--bad {
  border-radius: 14px;
  align-items: flex-start;
  padding-top: 10px;
  padding-bottom: 10px;
  background: rgba(233, 81, 74, 0.12);
  color: #8e2723;
}

.onec-trainer-feedback--bad::before {
  margin-top: 0.05rem;
  background-color: rgba(142, 39, 35, 0.12);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath fill='none' stroke='%238e2723' stroke-width='1.8' stroke-linecap='round' d='M3.2 3.2 8.8 8.8M8.8 3.2 3.2 8.8'/%3E%3C/svg%3E");
}

.onec-trainer-list {
  display: grid;
  gap: 12px;
}

.onec-trainer-list-item {
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(1, 105, 111, 0.14);
  background: #fff;
  cursor: pointer;
  text-align: left;
}

.onec-trainer-list-item strong {
  display: block;
  margin-bottom: 4px;
}

.onec-trainer-problem-section {
  width: 100%;
  text-align: left;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.onec-trainer-problem-section:hover {
  transform: translateY(-1px);
  border-color: rgba(1, 105, 111, 0.28);
  box-shadow: 0 10px 24px rgba(1, 105, 111, 0.1);
}

.onec-trainer-problem-section__meta {
  margin-top: 6px;
  line-height: 1.45;
}

.onec-trainer-problem-section__hint {
  margin-top: 8px;
  font-weight: 700;
  color: #01696f;
}

.onec-trainer-actions {
  margin-top: 16px;
  min-height: 52px;
  align-items: center;
}

.onec-trainer-search {
  display: grid;
  gap: 12px;
}

.onec-trainer-input {
  width: 100%;
  border: 1px solid rgba(1, 105, 111, 0.16);
  border-radius: 16px;
  padding: 14px 16px;
  font: inherit;
}

.onec-trainer-muted {
  color: rgba(24, 37, 39, 0.68);
}

.onec-trainer-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 16px 0 20px;
}

.onec-trainer-stat-grid--stats {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .onec-trainer-stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 540px) {
  .onec-trainer-stat-grid {
    grid-template-columns: 1fr;
  }
}

.onec-trainer-stat {
  padding: 16px;
  border-radius: 18px;
  background: #f5fbfb;
  border: 1px solid rgba(1, 105, 111, 0.12);
}

.onec-trainer-stat strong {
  display: block;
  font-size: 1.35rem;
  margin-bottom: 4px;
}

.onec-trainer-favorite {
  border: none;
  background: transparent;
  font-size: 1.45rem;
  cursor: pointer;
  line-height: 1;
}

.onec-trainer-exam-meta {
  display: flex;
  align-items: center;
}

.onec-trainer-exam-timer {
  font-weight: 800;
  color: #01696f;
  font-size: 1rem;
}

.onec-trainer-section-list {
  display: grid;
  gap: 14px;
}

.onec-trainer-list-layout {
  margin-top: 4px;
}

.onec-trainer-list-layout.mentee-doc-layout {
  grid-template-columns: minmax(0, 1fr) minmax(11.5rem, 17rem);
}

.onec-trainer-list-layout .mentee-doc-toc-link {
  text-decoration: none;
  padding: 0.18rem 0.45rem;
  border-radius: 0.3rem;
  transition: background 120ms ease, color 120ms ease;
}

.onec-trainer-list-layout .mentee-doc-toc-link:hover {
  background: rgba(1, 105, 111, 0.08);
  color: #01696f;
}

.onec-trainer-list-layout .mentee-doc-toc-link.is-active {
  background: rgba(1, 105, 111, 0.14);
  color: #01696f;
  font-weight: 600;
}

.onec-trainer-section-card {
  border-radius: 18px;
  border: 1px solid rgba(1, 105, 111, 0.14);
  overflow: hidden;
  scroll-margin-top: 5.5rem;
}

@media (max-width: 900px) {
  .onec-trainer-list-layout.mentee-doc-layout {
    grid-template-columns: 1fr;
  }

  .onec-trainer-list-layout .onec-trainer-list-toc {
    order: -1;
  }

  .onec-trainer-list-layout .mentee-doc-toc-sticky {
    position: static;
    max-height: none;
  }
}

.onec-trainer-section-head {
  width: 100%;
  text-align: left;
  padding: 16px 18px;
  background: #f7fbfb;
  border: none;
  cursor: pointer;
}

.onec-trainer-section-body {
  padding: 12px 18px 18px;
  display: grid;
  gap: 8px;
}

.onec-trainer-link {
  color: #01696f;
  text-decoration: none;
}

.onec-trainer-results-list {
  display: grid;
  gap: 14px;
}

.onec-trainer-result-item {
  display: grid;
  gap: 10px;
  padding: 16px;
  border: 1px solid rgba(1, 105, 111, 0.16);
  border-radius: 18px;
  background: linear-gradient(180deg, #fff 0%, #fbfefe 100%);
  box-shadow: 0 10px 26px rgba(1, 105, 111, 0.07);
}

.onec-trainer-result-question {
  display: block;
  line-height: 1.45;
}

.onec-trainer-result-answer {
  display: grid;
  grid-template-columns: 12rem minmax(0, 1fr);
  gap: 8px 12px;
  align-items: start;
  padding: 10px 12px;
  border-radius: 14px;
  line-height: 1.45;
}

.onec-trainer-result-label {
  font-weight: 800;
  color: #182527;
  white-space: nowrap;
}

.onec-trainer-result-lines {
  display: grid;
  gap: 6px;
}

.onec-trainer-result-line {
  display: block;
}

.onec-trainer-result-answer--wrong {
  color: #7d231f;
  background: rgba(233, 81, 74, 0.11);
  border: 1px solid rgba(233, 81, 74, 0.3);
}

.onec-trainer-result-answer--correct {
  color: #155d2a;
  background: rgba(76, 198, 103, 0.14);
  border: 1px solid rgba(76, 198, 103, 0.34);
}

.onec-trainer-result-hint {
  margin: 0 0 14px;
}

.onec-trainer-results-list--review {
  margin-top: 8px;
}

.onec-trainer-result-detail {
  border: 1px solid rgba(1, 105, 111, 0.16);
  border-radius: 18px;
  background: linear-gradient(180deg, #fff 0%, #fbfefe 100%);
  box-shadow: 0 10px 26px rgba(1, 105, 111, 0.07);
  overflow: hidden;
}

.onec-trainer-result-detail__summary {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: flex-start;
  padding: 14px 36px 14px 16px;
  cursor: pointer;
  list-style: none;
  position: relative;
}

.onec-trainer-result-detail__summary::-webkit-details-marker {
  display: none;
}

.onec-trainer-result-detail__summary::after {
  content: "▾";
  position: absolute;
  top: 16px;
  right: 14px;
  color: rgba(24, 37, 39, 0.45);
  font-size: 1.1rem;
  line-height: 1;
}

.onec-trainer-result-detail[open] .onec-trainer-result-detail__summary::after {
  transform: rotate(180deg);
}

.onec-trainer-result-detail__summary strong {
  flex: 1 1 12rem;
  min-width: 0;
}

.onec-trainer-result-detail__picked {
  flex: 1 1 100%;
  color: rgba(24, 37, 39, 0.68);
  font-size: 0.95rem;
  line-height: 1.4;
}

.onec-trainer-result-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.82rem;
  font-weight: 800;
  white-space: nowrap;
}

.onec-trainer-result-badge--ok {
  color: #155d2a;
  background: rgba(76, 198, 103, 0.16);
}

.onec-trainer-result-badge--bad {
  color: #7d231f;
  background: rgba(233, 81, 74, 0.14);
}

.onec-trainer-result-detail__body {
  padding: 0 16px 16px;
  display: grid;
  gap: 12px;
  border-top: 1px solid rgba(1, 105, 111, 0.1);
}

.onec-trainer-result-detail__prompt {
  padding-top: 14px;
  font-size: 1.05rem;
  line-height: 1.55;
  font-weight: 700;
  overflow-wrap: break-word;
  word-break: normal;
}

.onec-trainer-result-options {
  display: grid;
  gap: 8px;
}

.onec-trainer-result-option {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 8px 10px;
  align-items: start;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(1, 105, 111, 0.14);
  background: #fff;
  line-height: 1.45;
}

.onec-trainer-result-option__id {
  font-weight: 800;
  color: #01696f;
}

.onec-trainer-result-option__tag {
  font-size: 0.78rem;
  font-weight: 700;
  color: rgba(24, 37, 39, 0.62);
  white-space: nowrap;
}

.onec-trainer-result-option--correct {
  background: rgba(76, 198, 103, 0.14);
  border-color: rgba(76, 198, 103, 0.34);
}

.onec-trainer-result-option--wrong {
  background: rgba(233, 81, 74, 0.11);
  border-color: rgba(233, 81, 74, 0.3);
}

.onec-trainer-result-option--chosen.onec-trainer-result-option--correct {
  box-shadow: inset 0 0 0 2px rgba(31, 111, 51, 0.22);
}

.onec-trainer-result-option--chosen.onec-trainer-result-option--wrong {
  box-shadow: inset 0 0 0 2px rgba(142, 39, 35, 0.2);
}

@media (max-width: 640px) {
  .onec-trainer-result-answer {
    grid-template-columns: 1fr;
  }


  .onec-trainer-result-option {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .onec-trainer-result-option__tag {
    grid-column: 1 / -1;
  }
}