:root {
  --primary: #0d6efd;
  --primary-dark: #0b5ed7;
  --page: #f6f7fb;
  --card-bg: #ffffff;
  --radius: 16px;
  --transition: 0.25s ease;
}
* {
  box-sizing: border-box;
}
html {
  height: 100%;
}
body {
  min-height: 100svh;
  margin: 0;
  font-family:
    "Inter",
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    sans-serif;
  background: var(--page);
  display: grid;
  place-items: center;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.card {
  width: 100%;
  max-width: 420px;
  padding: 32px 28px 36px;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: 0 12px 30px rgba(16, 24, 40, 0.08);
  text-align: center;
  animation: fade-in 0.45s ease both;
}
@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.logo {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary);
}
.subtitle {
  font-size: 0.95rem;
  color: #6b7280;
  margin-bottom: 24px;
}
.field {
  position: relative;
  margin-bottom: 14px;
}
.field input {
  width: 100%;
  padding: 14px 44px 14px 14px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #f9fafb;
  font-size: 0.95rem;
  outline: none;
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    background var(--transition);
}
.field input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.12);
}
.toggle-password {
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  border: none;
  background: none;
  cursor: pointer;
  font-size: 1rem;
  color: #9ca3af;
  padding: 2px 6px;
  border-radius: 8px;
}
.toggle-password:hover {
  color: var(--primary);
}
.btn {
  width: 100%;
  padding: 14px;
  margin-top: 6px;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: background var(--transition), transform 0.05s ease;
}
.btn:hover,
.btn:focus-visible {
  background: var(--primary-dark);
}
.btn:active {
  transform: translateY(1px);
}
#message {
  margin-top: 14px;
  font-size: 0.93rem;
  font-weight: 500;
  min-height: 1.2em;
}
.error {
  color: #d52731;
}
.success {
  color: #269f53;
}
.empty-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  padding: 24px;
  background:
    linear-gradient(
      180deg,
      #f4f6fb,
      #f9fafb);
}
.empty-card {
  max-width: 640px;
  width: min(92vw, 640px);
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  box-shadow: 0 16px 40px rgba(16, 24, 40, .08);
  padding: 24px;
  text-align: center;
}
.empty-illust {
  margin-bottom: 12px;
}
.empty-card h2 {
  margin: 6px 0 6px;
  font-weight: 800;
  font-size: 1.25rem;
  color: #0f172a;
  letter-spacing: .2px;
}
.empty-card p {
  margin: 0 0 10px;
  color: #6b7280;
  font-size: .98rem;
}
.hintline {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 8px 12px;
  border: 1px dashed #e5e7eb;
  border-radius: 10px;
  color: #374151;
  background: #f9fafb;
  font-size: .92rem;
}
.hintline i {
  color: #2563eb;
}
.logout-icon {
  position: fixed;
  top: 12px;
  left: 12px;
  width: 26px;
  height: 26px;
  padding: 0;
  border: none;
  border-radius: 9999px;
  display: grid;
  place-items: center;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(16, 24, 40, 0.12);
  transition: background var(--transition), transform 0.05s ease;
  z-index: 1000;
}
.logout-icon i {
  font-size: 14px;
  line-height: 1;
}
.logout-icon:hover {
  background: var(--primary-dark);
}
.logout-icon:active {
  transform: translateY(1px);
}
.quiz-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr 1fr;
}
.quiz-panel {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 14px;
}
.quiz-label {
  display: block;
  font-size: .9rem;
  color: #6b7280;
  margin-bottom: 6px;
}
.quiz-codebox {
  width: 100%;
  min-height: 420px;
  resize: vertical;
  font-family:
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    Consolas,
    "Liberation Mono",
    "Courier New",
    monospace;
  font-size: .95rem;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 12px;
}
.quiz-lint {
  margin-top: 8px;
  font-size: .9rem;
  min-height: 1.1em;
}
.quiz-lint.error {
  color: #d52731;
}
.quiz-lint.success {
  color: #269f53;
}
.quiz-preview {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 12px;
  min-height: 420px;
  overflow: auto;
}
.quiz-preview .q {
  padding: 10px;
  border-bottom: 1px dashed #e5e7eb;
}
.quiz-preview .q:last-child {
  border-bottom: none;
}
.quiz-preview .title {
  font-weight: 700;
  margin-bottom: 4px;
}
.quiz-preview .meta {
  color: #6b7280;
  font-size: .9rem;
  margin-bottom: 10px;
}
.quiz-preview .opt {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 6px;
}
.btnbar {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: nowrap;
}
.btnbar .btn {
  flex: 0 0 auto;
}
.pill {
  border-radius: 9999px !important;
}
.btn.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  background:
    linear-gradient(
      180deg,
      #2563eb,
      #1d4ed8);
  color: #fff;
  border: 1px solid #1d4ed8;
  box-shadow: 0 10px 22px rgba(29, 78, 216, .18), 0 2px 6px rgba(29, 78, 216, .12);
  transition:
    transform .06s ease,
    box-shadow var(--transition),
    background var(--transition);
  white-space: nowrap;
  min-width: 150px;
  max-width: 200px;
}
.btn.btn-primary:hover,
.btn.btn-primary:focus-visible {
  background:
    linear-gradient(
      180deg,
      #1e4fdc,
      #1b46c8);
  box-shadow: 0 14px 30px rgba(29, 78, 216, .22), 0 2px 8px rgba(29, 78, 216, .14);
}
.btn.btn-primary:active {
  transform: translateY(1px);
}
.btn.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  background: #fff;
  color: #111827;
  border: 1px solid #e5e7eb;
  box-shadow: 0 4px 10px rgba(0, 0, 0, .06);
  transition:
    transform .06s ease,
    box-shadow var(--transition),
    background var(--transition),
    border-color var(--transition);
  white-space: nowrap;
  min-width: 120px;
  max-width: 180px;
}
.btn.btn-ghost:hover,
.btn.btn-ghost:focus-visible {
  background: #f9fafb;
  border-color: #d1d5db;
  box-shadow: 0 6px 14px rgba(0, 0, 0, .08);
}
.btn.btn-ghost:active {
  transform: translateY(1px);
}
.has-spinner {
  position: relative;
}
.has-spinner.is-loading {
  pointer-events: none;
  opacity: .9;
}
.has-spinner.is-loading::after {
  content: "";
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .6);
  border-top-color: #fff;
  position: absolute;
  right: 12px;
  animation: spin .8s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.quiz-codebox {
  min-height: 420px;
}
.quiz-preview {
  min-height: 420px;
}
.quiz-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  min-height: 60px;
  flex-wrap: wrap;
}
.quiz-head h1 {
  flex: 1 1 280px;
  min-width: 220px;
}
@media (max-width: 860px) {
  .btnbar {
    width: 100%;
    justify-content: flex-start;
    margin-top: 6px;
    flex-wrap: wrap;
  }
}
@media (max-width: 980px) {
  .quiz-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}
.q-input.sm {
  display: inline-block;
  vertical-align: baseline;
  margin: 0 6px;
  padding: 6px 6px 4px 6px;
  border: none;
  border-bottom: 2px solid #dbe2ea;
  background: #fff;
  font: inherit;
  line-height: 1.2;
  width: auto;
  min-width: 8ch;
  max-width: 26ch;
  transition:
    border-color .15s,
    box-shadow .15s,
    background .15s;
}
.q-input.sm::placeholder {
  color: #9aa4b2;
  opacity: .9;
}
.q-input.sm:focus {
  outline: none;
  border-bottom-color: #93c5fd;
  box-shadow: 0 2px 0 0 rgba(59, 130, 246, .35);
  background: #f8fbff;
  border-radius: 6px 6px 0 0;
}
.q-input.sm:placeholder-shown {
  background: #fcfdff;
}
.q-select.sm {
  display: inline-block;
  vertical-align: baseline;
  margin: 0 6px;
  padding: 6px 28px 6px 10px;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  background: #fff;
  font: inherit;
  line-height: 1.2;
  width: auto;
  min-width: 9ch;
  max-width: 36ch;
  transition:
    border-color .15s,
    box-shadow .15s,
    background .15s;
}
.q-select.sm:focus {
  outline: none;
  border-color: #93c5fd;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, .25);
  background: #f8fbff;
}
.q-input:focus,
.q-select:focus,
.q-textarea:focus {
  border-color: #93c5fd;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, .25);
}
.q-select {
  appearance: none;
  background-image:
    linear-gradient(
      45deg,
      transparent 50%,
      #6b7280 50%),
    linear-gradient(
      135deg,
      #6b7280 50%,
      transparent 50%),
    linear-gradient(
      to right,
      #e5e7eb,
      #e5e7eb);
  background-position:
    calc(100% - 16px) 50%,
    calc(100% - 10px) 50%,
    calc(100% - 36px) 50%;
  background-size:
    6px 6px,
    6px 6px,
    1px 60%;
  background-repeat: no-repeat;
}
.q-select:invalid {
  color: #9ca3af;
}
.q-select:invalid {
  color: #9ca3af;
}
.q-hint {
  color: #6b7280;
  font-size: .9rem;
}
.q-chipgroup {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.q-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  border: 1px solid #e5e7eb;
  border-radius: 999px;
  background: #fff;
  cursor: pointer;
  transition:
    box-shadow .15s,
    border-color .15s,
    background .15s;
}
.q-chip input {
  appearance: none;
  width: 14px;
  height: 14px;
  border: 2px solid #9ca3af;
  border-radius: 50%;
}
.q-chip:has(input:checked) {
  border-color: #93c5fd;
  background: #f8fbff;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, .25);
}
.q-chip:has(input:checked) input {
  border-color: #2563eb;
  background: #2563eb;
}
.q-draglist {
  list-style: none;
  padding: 0;
  margin: 8px 0;
}
.q-draglist li {
  padding: 10px 12px;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  background: #fff;
  margin: 8px 0;
  cursor: grab;
}
.q-draglist li.dragging {
  opacity: .6;
}
.q-dragghost {
  border: 1px dashed #93c5fd;
  background: #f8fbff;
}
.match-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
@media (min-width: 720px) {
  .match-wrap {
    grid-template-columns: 1fr 1fr;
  }
}
.match-left .match-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 10px 0;
}
.match-left .num {
  min-width: 22px;
  font-weight: 700;
}
.match-choices {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.match-right {
  border: 1px solid #eef2f7;
  background: #fafafa;
  border-radius: 10px;
  padding: 10px;
  position: sticky;
  top: 20px;
  align-self: flex-start;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
}
.match-right .rline {
  margin: 6px 0;
}
.q-chip.letter {
  padding: 6px 10px;
}
.q-chip.letter span {
  font-weight: 700;
}
.q-rewrite {
  margin-top: 8px;
}
.q-source {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  background: #f8fafc;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 10px 12px;
  margin: 6px 0 10px;
}
.q-src-text {
  color: #0f172a;
}
.q-badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  background: #111827;
  color: #fff;
  font-size: .78rem;
  font-weight: 700;
}
.q-badge.ghost {
  background: #eef2ff;
  color: #1f2937;
}
.q-field {
  margin-top: 6px;
}
.q-textarea {
  width: 100%;
  min-height: 80px;
  max-height: 320px;
  resize: vertical;
  padding: 12px 12px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #fff;
  font: inherit;
  line-height: 1.5;
  transition:
    border-color .15s,
    box-shadow .15s,
    background .15s;
}
.q-textarea::placeholder {
  color: #9aa4b2;
}
.q-textarea:focus {
  outline: none;
  border-color: #93c5fd;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, .25);
  background: #f8fbff;
}
.q-meta {
  display: flex;
  justify-content: flex-end;
  font-size: .85rem;
  color: #6b7280;
  margin-top: 6px;
}
select[data-type=cloze-select] {
  max-width: none !important;
}
select[data-type=cloze-select].break {
  display: block;
  width: 100% !important;
  margin: 6px 0;
}
.ts-overlay {
  overflow: auto;
}
.ts-modal {
  max-height: 92vh;
  display: flex;
  flex-direction: column;
}
.q-toolbar {
  position: sticky;
  top: 0;
  background: #fff;
  padding-bottom: 6px;
  z-index: 1;
}
.q-rich-editor {
  flex: 1 1 auto;
  min-height: 160px;
  max-height: 60vh;
  overflow: auto;
}
.ts-actions {
  position: sticky;
  bottom: 0;
  background: #fff;
  padding-top: 10px;
  margin-top: 10px;
}
@supports (padding: env(safe-area-inset-bottom)) {
  .ts-actions {
    padding-bottom: env(safe-area-inset-bottom);
  }
}
.section-header {
  background:
    linear-gradient(
      135deg,
      #f0f9ff 0%,
      #e0f2fe 100%);
  border: 1px solid #bae6fd;
  border-left: 5px solid #0284c7;
  border-radius: 12px;
  margin: 28px 0 18px;
  padding: 18px 20px;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.08);
}
.section-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: #0369a1;
  margin: 0 0 6px;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-title::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background:
    linear-gradient(
      135deg,
      #0ea5e9 0%,
      #0284c7 100%);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}
.section-sub {
  color: #475569;
  font-size: 0.98rem;
  margin: 0 0 10px;
  padding-left: 18px;
}
.section-instr {
  background: none;
  padding: 8px 0 4px 18px;
  border: none;
  border-radius: 0;
  box-shadow: none;
  font-size: 1.08rem;
  font-weight: 600;
  font-style: italic;
  color: #1e40af;
  margin-top: 8px;
}
.mm-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}
.mm-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: #f8fafc;
  border-radius: 8px;
}
.mm-num {
  font-weight: 600;
  color: #64748b;
  min-width: 24px;
}
.mm-text {
  flex: 1;
}
.mm-row select {
  min-width: 60px;
}
.q-lines {
  margin: 12px 0;
  padding: 12px 16px;
  background: #f8fafc;
  border-radius: 8px;
  border-left: 3px solid #3b82f6;
}
.q-line {
  margin: 6px 0;
  line-height: 1.6;
  color: #334155;
}
.q-line:first-child {
  margin-top: 0;
}
.q-line:last-child {
  margin-bottom: 0;
}
.word-bank {
  margin-top: 12px;
  padding: 12px 16px;
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 10px;
}
.word-bank-label {
  font-size: 0.85rem;
  color: #0369a1;
  font-weight: 600;
  margin-bottom: 8px;
}
.word-bank-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.word-bank-item {
  display: inline-block;
  padding: 6px 12px;
  background: #ffffff;
  border: 1px solid #7dd3fc;
  border-radius: 6px;
  font-size: 0.95rem;
  color: #0c4a6e;
}
.example-box {
  margin-top: 14px;
  padding: 14px 18px;
  background:
    linear-gradient(
      135deg,
      #fef9c3 0%,
      #fef08a 100%);
  border: 1px solid #facc15;
  border-left: 4px solid #eab308;
  border-radius: 10px;
}
.example-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: #a16207;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.example-situation {
  font-size: 0.95rem;
  color: #713f12;
  margin-bottom: 6px;
  line-height: 1.5;
}
.example-answer {
  font-size: 1rem;
  color: #166534;
  font-weight: 600;
  padding: 8px 12px;
  background: #fff;
  border-radius: 6px;
  border: 1px dashed #86efac;
  display: inline-block;
}
.gap-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #1e40af;
  background: #dbeafe;
  border-radius: 4px;
  margin-right: 2px;
  vertical-align: middle;
  padding: 0 4px;
}
.passage-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1e293b;
  margin: 0 0 16px 0;
  line-height: 1.4;
}
.passage-para {
  margin-bottom: 16px;
  line-height: 1.7;
  text-align: justify;
}
.para-label {
  display: inline;
  font-weight: 700;
  color: #1e40af;
  margin-right: 8px;
}
.para-text {
  display: inline;
}
.passage-text ul {
  margin: 8px 0 8px 20px;
  padding: 0;
}
.passage-text li {
  margin: 4px 0;
  line-height: 1.6;
}
.passage-text p {
  margin: 8px 0;
}
.notes-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: #1e3a5f;
  margin: 0 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid #e2e8f0;
  line-height: 1.3;
}
.qwrap {
  min-height: 70vh;
}
.qitem {
  min-height: 160px;
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
}
.q-chipgroup {
  gap: 12px;
  margin-top: 16px;
}
.q-chip {
  padding: 12px 16px;
  font-size: 1rem;
}
.qitem strong {
  font-weight: 700;
  color: #1e40af;
  display: block;
  margin-top: 16px;
  margin-bottom: 4px;
}
.qitem.short-answer-item strong {
  display: inline;
  margin-top: 0;
  margin-bottom: 0;
}
.notes-title + br + strong,
.notes-title + strong {
  margin-top: 8px;
}
.qitem ul {
  margin: 6px 0 12px 20px;
  padding: 0;
  list-style-type: disc;
}
.qitem li {
  margin: 6px 0;
  line-height: 1.6;
  color: #334155;
}
.gap-num {
  color: #3b82f6;
  font-weight: 600;
  margin-right: 2px;
}
.cloze-lines-wrap {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 4px;
}
.cloze-line {
  padding: 14px 0;
  border-bottom: 1px solid #e5e7eb;
  line-height: 1.9;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px;
}
.cloze-line:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.cloze-line:first-child {
  padding-top: 0;
}
.cloze-line-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 26px;
  padding: 0 8px;
  background:
    linear-gradient(
      135deg,
      #3b82f6 0%,
      #2563eb 100%);
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: 6px;
  margin-right: 10px;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.25);
  flex-shrink: 0;
}
.cloze-line:hover {
  background: #fafbfc;
  margin-left: -12px;
  margin-right: -12px;
  padding-left: 12px;
  padding-right: 12px;
  border-radius: 8px;
}
.cloze-line:has(.q-input:focus) {
  background: #f0f9ff;
  margin-left: -12px;
  margin-right: -12px;
  padding-left: 12px;
  padding-right: 12px;
  border-radius: 8px;
  border-bottom-color: transparent;
}
.fce-gapped-wrap {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.fce-passage {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 18px 20px;
  line-height: 1.85;
  font-size: 0.98rem;
  color: #1e293b;
}
.fce-gap-marker {
  background: #fef3c7;
  color: #92400e;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  margin: 0 2px;
}
.fce-dropdowns {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 16px 20px;
}
.fce-dropdowns-title {
  font-weight: 600;
  color: #475569;
  margin-bottom: 12px;
  font-size: 0.9rem;
}
.fce-dropdowns-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  align-items: center;
}
.fce-gap-row {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.fce-gap-label {
  font-weight: 700;
  color: #0f172a;
  min-width: 24px;
}
.fce-gap-row .slot-select {
  min-width: 70px;
  padding: 6px 10px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font-size: 0.95rem;
  background: #fff;
}
.fce-sentence-bank {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 16px 20px;
}
.fce-bank-title {
  font-weight: 600;
  color: #475569;
  margin-bottom: 12px;
  font-size: 0.9rem;
}
.fce-sentence-item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid #e2e8f0;
}
.fce-sentence-item:last-child {
  border-bottom: none;
}
.fce-sentence-label {
  font-weight: 700;
  color: #0369a1;
  min-width: 24px;
  flex-shrink: 0;
}
.fce-sentence-text {
  color: #334155;
  line-height: 1.5;
}
.matching-endings-wrap {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.me-sentence-starters {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 16px 20px;
}
.me-starters-title {
  font-weight: 600;
  color: #475569;
  margin-bottom: 12px;
  font-size: 0.9rem;
}
.me-starter-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid #f1f5f9;
}
.me-starter-row:last-child {
  border-bottom: none;
}
.me-starter-num {
  font-weight: 700;
  color: #0f172a;
  min-width: 28px;
  flex-shrink: 0;
}
.me-starter-text {
  flex: 1;
  color: #334155;
  line-height: 1.5;
}
.me-starter-select {
  min-width: 70px;
  padding: 6px 10px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font-size: 0.95rem;
  background: #fff;
  flex-shrink: 0;
}
.me-endings-bank {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 16px 20px;
}
.me-endings-title {
  font-weight: 600;
  color: #475569;
  margin-bottom: 12px;
  font-size: 0.9rem;
}
.me-ending-item {
  display: flex;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid #e2e8f0;
}
.me-ending-item:last-child {
  border-bottom: none;
}
.me-ending-label {
  font-weight: 700;
  color: #0369a1;
  min-width: 24px;
  flex-shrink: 0;
}
.me-ending-text {
  color: #334155;
  line-height: 1.5;
}
.matching-headings-wrap {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.mh-headings-list {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 16px 20px;
}
.mh-headings-title,
.mh-paras-title {
  font-weight: 600;
  color: #475569;
  margin-bottom: 12px;
  font-size: 0.9rem;
}
.mh-heading-item {
  display: flex;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid #e2e8f0;
}
.mh-heading-item:last-child {
  border-bottom: none;
}
.mh-heading-num {
  font-weight: 700;
  color: #0369a1;
  min-width: 28px;
  flex-shrink: 0;
}
.mh-heading-text {
  color: #334155;
  line-height: 1.5;
}
.mh-paragraphs {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 16px 20px;
}
.mh-para-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid #f1f5f9;
}
.mh-para-row:last-child {
  border-bottom: none;
}
.mh-para-num {
  font-weight: 700;
  color: #6b7280;
  min-width: 24px;
  flex-shrink: 0;
}
.mh-para-label {
  flex: 1;
  color: #1e293b;
  font-weight: 500;
}
.mh-select {
  min-width: 70px;
  padding: 6px 10px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font-size: 0.95rem;
  background: #fff;
}
.mh-example {
  background: #f0fdf4;
  border-radius: 6px;
  padding: 10px 12px !important;
}
.mh-example-answer {
  font-weight: 700;
  color: #166534;
  min-width: 40px;
  text-align: center;
}
.mh-example-tag {
  font-size: 0.75rem;
  color: #166534;
  background: #dcfce7;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}
.wf-gap-wrap {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin: 0 2px;
  vertical-align: middle;
}
.wf-input {
  width: 120px;
  text-align: center;
  border-bottom: 2px solid #2563eb !important;
}
.wf-base {
  font-weight: 700;
  color: #0f766e;
  text-transform: uppercase;
  font-size: 0.85em;
  background: #f0fdfa;
  padding: 2px 6px;
  border-radius: 4px;
  white-space: nowrap;
}
.wf-input {
  width: 110px;
  text-align: center;
  border: none !important;
  border-bottom: 2px solid #2563eb !important;
  border-radius: 0 !important;
  background: transparent !important;
}
.wf-input:focus {
  border-bottom-color: #1d4ed8 !important;
  outline: none;
}
.wf-base {
  font-weight: 700;
  color: #0f766e;
  text-transform: uppercase;
  font-size: 0.8em;
  background: #f0fdfa;
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
  border: 1px solid #99f6e4;
}
.wf-passage-item {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 20px 24px;
  margin: 16px 0;
}
.wf-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #0f172a;
  text-align: center;
  margin: 0 0 16px 0;
  padding-bottom: 12px;
  border-bottom: 2px solid #e2e8f0;
}
.wf-layout {
  display: grid;
  grid-template-columns: 1fr 140px;
  gap: 24px;
  align-items: start;
}
@media (max-width: 640px) {
  .wf-layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .wf-base-col {
    order: -1;
  }
}
.wf-passage-col {
  line-height: 2.2;
  color: #334155;
  font-size: 1rem;
}
.wf-inline-gap {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  margin: 0 2px;
  vertical-align: baseline;
}
.wf-num {
  font-weight: 700;
  color: #2563eb;
  font-size: 0.9em;
}
.wf-input {
  width: auto;
  min-width: 70px;
  max-width: 280px;
  padding: 6px 10px;
  border: none;
  border-bottom: 2px solid #cbd5e1;
  border-radius: 4px 4px 0 0;
  background: #f8fafc;
  font-size: 0.95rem;
  text-align: center;
  transition:
    border-color 0.2s,
    background 0.2s,
    box-shadow 0.2s;
}
.wf-input:focus {
  outline: none;
  border-bottom-color: #2563eb;
  background: #eff6ff;
  box-shadow: 0 -2px 8px rgba(37, 99, 235, 0.15);
}
.wf-input:not(:placeholder-shown) {
  background: #f0fdf4;
  border-bottom-color: #22c55e;
}
.wf-base-col {
  position: sticky;
  top: 80px;
}
.wf-base-list {
  background:
    linear-gradient(
      135deg,
      #f0fdf4 0%,
      #ecfeff 100%);
  border: 1px solid #99f6e4;
  border-radius: 10px;
  padding: 12px 14px;
}
.wf-base-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px dashed #d1fae5;
}
.wf-base-item:last-child {
  border-bottom: none;
}
.wf-base-num {
  font-size: 0.8rem;
  color: #64748b;
  min-width: 24px;
}
.wf-base-word {
  font-weight: 700;
  color: #0f766e;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
}
.wf-example {
  background: #fefce8;
  border: 1px solid #fde047;
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}
.wf-example-label {
  font-weight: 600;
  color: #854d0e;
  margin-bottom: 4px;
}
.wf-example-text {
  color: #713f12;
}
.wf-example-answer {
  display: inline-block;
  background: #fff;
  border: 1px solid #fde047;
  border-radius: 4px;
  padding: 2px 8px;
  font-weight: 600;
  color: #0f766e;
  text-transform: uppercase;
}
.q-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  padding: 4px 10px;
  background:
    linear-gradient(
      135deg,
      #3b82f6 0%,
      #2563eb 100%);
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: 8px;
  margin-right: 8px;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}
.cloze-select-gap {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin: 2px 0;
}
.cloze-gap-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  font-weight: 700;
  font-size: 0.75rem;
  color: #fff;
  background: var(--primary, #2563eb);
  border-radius: 11px;
  margin-right: 4px;
}
.cross-out-wrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
}
.cross-out-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.cross-out-num {
  font-weight: 700;
  color: #6b7280;
  min-width: 24px;
}
.cross-out-words {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}
.cross-out-word {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.15s ease;
}
.cross-out-word:hover {
  background: #fee2e2;
  border-color: #fca5a5;
}
.cross-out-word.crossed {
  text-decoration: line-through;
  text-decoration-thickness: 2px;
  text-decoration-color: #dc2626;
  background: #fee2e2;
  border-color: #dc2626;
  color: #991b1b;
}
.cross-out-slash {
  color: #9ca3af;
  font-weight: 300;
  margin: 0 2px;
}
.cross-out-context {
  color: #374151;
  font-style: italic;
}
.cloze-notes-wrap {
  line-height: 1.7;
}
.cloze-notes-wrap h3.notes-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1e40af;
  margin: 0 0 12px 0;
  text-align: center;
}
.cloze-notes-wrap > strong {
  display: block;
  margin-top: 16px;
  margin-bottom: 4px;
  font-weight: 600;
  color: #334155;
}
.cloze-notes-wrap li strong,
.cloze-notes-wrap li b {
  display: inline;
  margin: 0;
  font-weight: 700;
  color: inherit;
}
.cloze-notes-wrap ul {
  margin: 0 0 8px 0;
  padding-left: 24px;
}
.cloze-notes-wrap li {
  margin-bottom: 6px;
}
.cloze-inline-num {
  display: inline-block;
  min-width: 22px;
  font-weight: 600;
  color: #2563eb;
  margin-right: 4px;
}
.lesson-content {
  background:
    linear-gradient(
      135deg,
      #f8fafc 0%,
      #f1f5f9 100%);
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}
.lesson-content .lesson-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.lesson-content .lesson-badge {
  background:
    linear-gradient(
      135deg,
      #0ea5e9 0%,
      #0284c7 100%);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 6px 14px;
  border-radius: 8px;
  white-space: nowrap;
}
.lesson-content .lesson-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1e293b;
  margin: 0;
}
.lesson-content .lesson-subtitle {
  color: #64748b;
  font-size: 0.95rem;
  margin: 0 0 16px 0;
}
.lesson-content .lesson-body {
  line-height: 1.8;
  color: #334155;
}
.lesson-content .lesson-body p {
  margin: 0 0 12px 0;
}
.lesson-content .lesson-body ul,
.lesson-content .lesson-body ol {
  margin: 8px 0 12px 20px;
  padding: 0;
}
.lesson-content .lesson-body li {
  margin-bottom: 6px;
}
.lesson-content .dialogue-box {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-left: 4px solid #10b981;
  border-radius: 10px;
  padding: 14px 16px;
  margin: 12px 0;
  font-size: 0.95rem;
}
.lesson-content .dialogue-box.blue {
  background: #eff6ff;
  border-color: #bfdbfe;
  border-left-color: #3b82f6;
}
.lesson-content .dialogue-box.yellow {
  background: #fefce8;
  border-color: #fef08a;
  border-left-color: #eab308;
}
.lesson-content .dialogue-box.purple {
  background: #faf5ff;
  border-color: #e9d5ff;
  border-left-color: #a855f7;
}
.lesson-content .dialogue-line {
  margin: 6px 0;
}
.lesson-content .dialogue-line .speaker {
  font-weight: 700;
  color: #065f46;
  margin-right: 8px;
}
.lesson-content .dialogue-box.blue .speaker {
  color: #1e40af;
}
.lesson-content .dialogue-box.yellow .speaker {
  color: #a16207;
}
.lesson-content .dialogue-box.purple .speaker {
  color: #7e22ce;
}
.lesson-content .lesson-section {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed #cbd5e1;
}
.lesson-content .lesson-section-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #0f766e;
  margin: 0 0 10px 0;
}
.lesson-content .tip-box {
  background:
    linear-gradient(
      135deg,
      #fef3c7 0%,
      #fde68a 100%);
  border: 1px solid #fcd34d;
  border-radius: 10px;
  padding: 12px 16px;
  margin: 12px 0;
  color: #92400e;
  font-size: 0.95rem;
}
.lesson-content .tip-box strong {
  color: #78350f;
}
.lesson-content .example-box {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 16px;
  margin: 12px 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}
.lesson-content .example-label {
  font-weight: 700;
  color: #6366f1;
  font-size: 0.85rem;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.lesson-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}
.lesson-toggle-icon {
  font-size: 1.2rem;
  color: #64748b;
  transition: transform 0.2s;
}
.lesson-content.collapsed .lesson-body {
  display: none;
}
.lesson-content.collapsed .lesson-toggle-icon {
  transform: rotate(-90deg);
}
.lesson-content .notes-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #1e40af;
  background:
    linear-gradient(
      135deg,
      #dbeafe 0%,
      #bfdbfe 100%);
  padding: 12px 16px;
  border-radius: 10px;
  margin: 0 0 16px 0;
  border-left: 4px solid #3b82f6;
}
.lesson-content .info-box {
  background:
    linear-gradient(
      135deg,
      #dbeafe 0%,
      #bfdbfe 100%);
  border: 1px solid #93c5fd;
  border-radius: 10px;
  padding: 12px 16px;
  margin: 12px 0;
  color: #1e40af;
  font-size: 0.95rem;
}
.summary-section {
  background:
    linear-gradient(
      135deg,
      #f0fdf4 0%,
      #dcfce7 100%);
  border: 2px dashed #86efac;
  border-radius: 16px;
  padding: 20px 24px;
  margin: 32px 0 24px;
}
.summary-section .summary-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.summary-section .summary-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #166534;
  margin: 0;
}
.summary-section .summary-title::before {
  content: "\1f4cc";
  margin-right: 8px;
}
.summary-section .summary-instr {
  font-style: italic;
  color: #15803d;
  margin: 0 0 16px 0;
  font-size: 0.95rem;
}
.summary-section .qitem {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: none;
  border: 1px solid #bbf7d0;
}
.summary-section .qitem:last-child {
  margin-bottom: 0;
}
.summary-section .qitem .q-head {
  display: none;
}
.lesson-content .warning-box {
  background:
    linear-gradient(
      135deg,
      #fef2f2 0%,
      #fecaca 100%);
  border: 1px solid #fca5a5;
  border-radius: 10px;
  padding: 12px 16px;
  margin: 12px 0;
  color: #991b1b;
  font-size: 0.95rem;
}
.lesson-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 0.95rem;
}
.lesson-content th,
.lesson-content td {
  border: 1px solid #e2e8f0;
  padding: 10px 12px;
  text-align: left;
}
.lesson-content th {
  background: #f1f5f9;
  font-weight: 600;
  color: #1e293b;
}
.lesson-content tr:nth-child(even) {
  background: #f8fafc;
}
.lesson-content blockquote {
  border-left: 4px solid #cbd5e1;
  margin: 12px 0;
  padding: 12px 16px;
  background: #f8fafc;
  color: #475569;
  font-style: italic;
  border-radius: 0 8px 8px 0;
}
.lesson-content code {
  background: #f1f5f9;
  padding: 2px 6px;
  border-radius: 4px;
  font-family:
    "Consolas",
    "Monaco",
    monospace;
  font-size: 0.9em;
  color: #e11d48;
}
.lesson-content pre {
  background: #1e293b;
  color: #e2e8f0;
  padding: 16px;
  border-radius: 10px;
  overflow-x: auto;
  margin: 12px 0;
  font-size: 0.9rem;
}
.lesson-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.lesson-content mark {
  background:
    linear-gradient(
      135deg,
      #fef08a 0%,
      #fde047 100%);
  padding: 1px 4px;
  border-radius: 3px;
}
.lesson-content img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  margin: 12px 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.lesson-content hr {
  border: none;
  border-top: 1px dashed #cbd5e1;
  margin: 20px 0;
}
.lesson-content dl {
  margin: 12px 0;
}
.lesson-content dt {
  font-weight: 700;
  color: #1e293b;
  margin-top: 10px;
}
.lesson-content dd {
  margin: 4px 0 0 20px;
  color: #475569;
}
.lesson-content kbd {
  background: #f1f5f9;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  padding: 2px 6px;
  font-family: inherit;
  font-size: 0.85em;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}
.lesson-content a {
  color: #2563eb;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.lesson-content a:hover {
  color: #1d4ed8;
}
.lesson-content strong {
  color: #1e293b;
  font-weight: 700;
}
.lesson-content .media-placeholder {
  background: #f1f5f9;
  border: 2px dashed #cbd5e1;
  border-radius: 10px;
  padding: 24px;
  text-align: center;
  color: #64748b;
  margin: 12px 0;
}
.lesson-content .vocab-box {
  background: #f0fdf4;
  border: 1px solid #86efac;
  border-radius: 10px;
  padding: 14px 16px;
  margin: 12px 0;
}
.lesson-content .vocab-word {
  font-weight: 700;
  color: #166534;
}
.lesson-content .vocab-def {
  color: #475569;
  margin-left: 8px;
}
.vocab-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: 12px;
  background: #f0f7ff;
  border-radius: 8px;
  margin: 10px 0;
}
.vocab-grid span {
  background: white;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 14px;
  border: 1px solid #e0e0e0;
}
.vocab-grid b {
  color: #1a73e8;
}
.vocab-table {
  width: 100%;
  border-collapse: collapse;
  margin: 10px 0;
}
.vocab-table td {
  padding: 8px 12px;
  border-bottom: 1px solid #e5e7eb;
  vertical-align: top;
  width: 50%;
}
.vocab-table td:first-child {
  color: #1a73e8;
  font-weight: 600;
}
.vocab-table td:last-child {
  color: #4b5563;
}
.vocab-section {
  margin: 8px 0;
}
.vocab-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: center;
}
.vocab-item {
  padding: 6px 8px 6px 0;
  font-size: 0.9rem;
  border-bottom: 1px dotted #d1d5db;
  white-space: normal;
  word-wrap: break-word;
}
.vocab-item * {
  display: inline !important;
}
.vocab-item br {
  display: none !important;
}
.vocab-item:nth-child(2n) {
  padding-left: 16px;
  border-left: 1px dotted #d1d5db;
}
.vocab-item:nth-last-child(1),
.vocab-item:nth-last-child(2) {
  border-bottom: none;
}
.vocab-item strong {
  color: #2563eb;
  font-weight: 600;
}
.vocab-item:hover {
  background: #f8fafc;
}
@media (max-width: 600px) {
  .vocab-grid {
    grid-template-columns: 1fr;
  }
  .vocab-item {
    white-space: normal;
    padding-left: 0;
    border-left: none;
  }
  .vocab-item:nth-last-child(2) {
    border-bottom: 1px dotted #d1d5db;
  }
}
.prose-sum-intro {
  background: #f0f9ff;
  border-left: 3px solid #0284c7;
  padding: 12px 16px;
  margin-bottom: 16px;
  font-style: italic;
  color: #0369a1;
}
.prose-sum-opts {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.prose-sum-opt {
  padding: 12px 16px !important;
  border: 1px solid #e2e8f0 !important;
  border-radius: 8px !important;
  background: #fff !important;
}
.prose-sum-opt:has(input:checked) {
  border-color: #3b82f6 !important;
  background: #eff6ff !important;
}
.prose-sum-note {
  margin-top: 12px;
  font-size: 0.875rem;
  color: #64748b;
  font-weight: 500;
}
.insert-sentence {
  background: #fef3c7;
  border: 2px solid #f59e0b;
  border-radius: 8px;
  padding: 16px;
  margin: 16px 0;
  font-weight: 500;
}
.insert-passage {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 20px;
  line-height: 1.8;
  margin-bottom: 16px;
}
.insert-marker {
  display: inline-block;
  background: #3b82f6;
  color: white;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  margin: 0 4px;
}
.insert-prompt {
  font-weight: 600;
  margin-bottom: 12px;
}
.insert-choices {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.insert-opt {
  min-width: 60px;
  text-align: center;
}
.ts-btn.primary.btn-loading {
  pointer-events: none;
  position: relative;
  color: transparent !important;
  min-width: 140px;
}
.ts-btn.primary.btn-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 22px;
  height: 22px;
  border: 3px solid rgba(255, 255, 255, .35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: btnSpin .6s linear infinite;
}
@keyframes btnSpin {
  to {
    transform: rotate(360deg);
  }
}
.ts-overlay.fade-out {
  animation: overlayFadeOut .35s ease forwards;
}
.ts-overlay.fade-out .ts-modal {
  animation: modalSlideDown .35s ease forwards;
}
@keyframes overlayFadeOut {
  to {
    opacity: 0;
  }
}
@keyframes modalSlideDown {
  to {
    opacity: 0;
    transform: translateY(30px) scale(.97);
  }
}