/* Ocean UI optimization batches 3-5: semantic tags, resilient media and shared responsive controls. */
:root {
  --task-tag-planning: #4338ca;
  --task-tag-planning-soft: #eef2ff;
  --task-tag-academic: #0369a1;
  --task-tag-academic-soft: #e0f2fe;
  --task-tag-application: #047857;
  --task-tag-application-soft: #ecfdf5;
  --task-tag-writing: #b45309;
  --task-tag-writing-soft: #fffbeb;
  --task-tag-default: #475569;
  --task-tag-default-soft: #f1f5f9;
}

.task-tag-chip,
.tag-opt {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 2px 8px;
  border: 1px solid currentColor;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  line-height: 18px;
  letter-spacing: 0;
  white-space: nowrap;
}

.task-tag-chip.task-tag-planning,
.tag-opt.task-tag-planning { color: var(--task-tag-planning); background: var(--task-tag-planning-soft); }
.task-tag-chip.task-tag-academic,
.tag-opt.task-tag-academic { color: var(--task-tag-academic); background: var(--task-tag-academic-soft); }
.task-tag-chip.task-tag-application,
.tag-opt.task-tag-application { color: var(--task-tag-application); background: var(--task-tag-application-soft); }
.task-tag-chip.task-tag-writing,
.tag-opt.task-tag-writing { color: var(--task-tag-writing); background: var(--task-tag-writing-soft); }
.task-tag-chip.task-tag-default { color: var(--task-tag-default); background: var(--task-tag-default-soft); }

.task-tag-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-opt {
  min-height: 32px;
  padding: 5px 12px;
  cursor: pointer;
  opacity: .72;
  transition: opacity 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.tag-opt:hover { opacity: 1; }
.tag-opt.active {
  opacity: 1;
  box-shadow: inset 0 0 0 1px currentColor;
}
.tag-opt:focus-visible {
  outline: 3px solid rgba(31, 60, 255, .16);
  outline-offset: 2px;
}

.course-card-cover,
.expert-avatar,
.expert-detail-avatar,
.oto-course-cover,
.oto-teacher-avatar {
  position: relative;
}

.course-card-cover-fallback,
.oto-cover-fallback {
  position: absolute;
  inset: 0;
}

.course-card-cover > img,
.oto-course-cover > img,
.expert-avatar > img,
.expert-detail-avatar > img,
.oto-teacher-avatar > img {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.expert-avatar-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: inherit;
  font: inherit;
}

input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="file"]),
select,
textarea {
  min-height: 40px;
}

textarea { line-height: 1.55; }

input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="file"]):disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  background: #F5F7FA;
  color: #98A2B3;
}

.form-group label {
  display: inline-block;
  margin-bottom: 7px;
  color: #475467;
  font-size: 13px;
  font-weight: 600;
}

.modal { border-radius: 12px; }

.modal-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.modal-body { overscroll-behavior: contain; }

.list-item,
.list-row {
  transition: background-color .16s ease, border-color .16s ease;
}

.list-item:hover,
.list-row:hover { background: #F8FAFC; }

.table-scroll-mobile {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 768px) {
  .layout .sidebar {
    display: flex !important;
    transform: translateX(0);
    transition: transform .22s ease, box-shadow .22s ease;
    will-change: transform;
  }

  .layout.sidebar-collapsed .sidebar {
    display: flex !important;
    transform: translateX(-102%);
    box-shadow: none;
  }

  .sidebar-mobile-backdrop {
    opacity: 1;
    transition: opacity .22s ease;
  }

  .layout.sidebar-collapsed .sidebar-mobile-backdrop {
    display: block;
    opacity: 0;
    pointer-events: none;
  }

  .modal-overlay {
    align-items: flex-end;
    padding: 12px;
  }

  .modal {
    width: 100%;
    max-width: 100%;
    max-height: calc(100dvh - 24px);
    border-radius: 12px;
  }

  .modal-header,
  .modal-body,
  .modal-footer {
    padding-left: 16px;
    padding-right: 16px;
  }
}

@media (max-width: 640px) {
  .table-wrapper.table-card-mobile {
    overflow: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .table-wrapper.table-card-mobile table,
  .table-wrapper.table-card-mobile tbody,
  .table-wrapper.table-card-mobile tr,
  .table-wrapper.table-card-mobile td {
    display: block;
    width: 100%;
    min-width: 0;
  }

  .table-wrapper.table-card-mobile thead { display: none; }

  .table-wrapper.table-card-mobile tbody {
    display: grid;
    gap: 10px;
  }

  .table-wrapper.table-card-mobile tr {
    padding: 8px 14px;
    border: 1px solid #E4E7EC;
    border-radius: 8px;
    background: #FFFFFF;
  }

  .table-wrapper.table-card-mobile td,
  .card-body:has(> .table-wrapper.table-card-mobile) > .table-wrapper td:first-child,
  .card-body:has(> .table-wrapper.table-card-mobile) > .table-wrapper td:last-child {
    display: grid;
    grid-template-columns: minmax(88px, 34%) minmax(0, 1fr);
    gap: 12px;
    align-items: start;
    padding: 9px 0;
    border-bottom: 1px solid #F0F2F5;
    overflow-wrap: anywhere;
    text-align: right;
  }

  .table-wrapper.table-card-mobile td:last-child { border-bottom: 0; }

  .table-wrapper.table-card-mobile td::before {
    content: attr(data-label);
    color: #667085;
    font-size: 12px;
    font-weight: 600;
    text-align: left;
  }

  .table-wrapper.table-card-mobile td:empty { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

.expert-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, .04);
}

.expert-card:hover {
  border-color: #9bb4ff;
  box-shadow: 0 5px 14px rgba(15, 23, 42, .08);
  transform: translateY(-1px);
}

.expert-card-cover {
  border-radius: 7px 7px 0 0;
  background: #f3f6fc;
}