/* ==========================================================================
   mOintellect design system
   Tokens mirrored from https://mointellect.com (Raleway + teal palette,
   16px radii, white cards on a near-white page).
   ========================================================================== */

@font-face {
  font-family: "Raleway";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/static/fonts/raleway-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
    U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
    U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: "Raleway";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/static/fonts/raleway-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --mo-primary: #00a79d;
  --mo-primary-dark: rgba(1, 75, 75, 0.91);
  --mo-primary-soft: rgba(0, 167, 157, 0.1);
  --mo-accent: #cce8c9;
  --mo-headline: #172426;
  --mo-body: #546078;
  --mo-light: #f9fbfb;
  --mo-line: #d1dbdb;
  --mo-line-soft: #e7eded;
  --mo-danger: #b91c1c;

  --mo-radius: 16px;
  --mo-radius-sm: 10px;
  --mo-shadow: 0 18px 40px rgba(23, 36, 38, 0.07);
  --mo-shadow-soft: 0 4px 14px rgba(23, 36, 38, 0.05);
  --mo-container: 1080px;

  color-scheme: light;
  font-family: "Raleway", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  color: var(--mo-body);
  background-color: var(--mo-light);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--mo-light);
  color: var(--mo-body);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  color: var(--mo-headline);
  font-weight: 600;
  letter-spacing: -0.027em;
  line-height: 1.2;
  margin: 0;
}

h1 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.25;
}

h2 {
  font-size: clamp(21px, 2.4vw, 26px);
}

h3 {
  font-size: 20px;
}

h4 {
  font-size: 17px;
}

p {
  margin: 0;
}

a {
  color: var(--mo-primary);
}

.hidden {
  display: none !important;
}

/* --------------------------------------------------------------------------
   Site header
   -------------------------------------------------------------------------- */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--mo-line);
  position: sticky;
  top: 0;
  z-index: 900;
}

.site-header__inner {
  max-width: var(--mo-container);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand__logo {
  height: 42px;
  width: auto;
  display: block;
}

.site-header__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--mo-body);
  text-align: right;
}

.tagline-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mo-primary);
  flex: none;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--mo-container);
  margin: 0 auto;
  padding: 48px 24px 72px;
  flex: 1 0 auto;
}

.hero {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
}

.hero h1 {
  margin-bottom: 14px;
}

.hero p {
  font-size: 17px;
  color: var(--mo-body);
}

.eyebrow {
  display: inline-block;
  margin-bottom: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--mo-primary-soft);
  color: var(--mo-primary-dark);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.card {
  background: #fff;
  border: 1px solid var(--mo-line-soft);
  border-radius: var(--mo-radius);
  padding: 32px;
  margin-bottom: 24px;
  box-shadow: var(--mo-shadow);
}

.card > h2 {
  margin-bottom: 24px;
}

/* --------------------------------------------------------------------------
   Form controls
   -------------------------------------------------------------------------- */
.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 20px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.field > span {
  font-size: 14px;
  font-weight: 600;
  color: var(--mo-headline);
}

input[type="file"],
input[type="url"],
input[type="number"],
input[type="text"],
select,
textarea {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  color: var(--mo-headline);
  background: #fff;
  border: 1px solid var(--mo-line);
  border-radius: var(--mo-radius-sm);
  padding: 12px 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

textarea {
  resize: vertical;
  min-height: 92px;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath fill='none' stroke='%23546078' stroke-width='2' d='M1 1l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

input[type="file"] {
  padding: 9px 12px;
  cursor: pointer;
}

input[type="file"]::file-selector-button {
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--mo-primary-dark);
  background: var(--mo-primary-soft);
  border: none;
  border-radius: 8px;
  padding: 8px 14px;
  margin-right: 12px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

input[type="file"]::file-selector-button:hover {
  background: rgba(0, 167, 157, 0.18);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--mo-primary);
  box-shadow: 0 0 0 3px var(--mo-primary-soft);
}

::placeholder {
  color: #98a2b3;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
button,
.primary,
.secondary,
.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.2;
  border-radius: var(--mo-radius);
  padding: 15px 22px;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease,
    transform 0.2s ease, box-shadow 0.2s ease;
}

.primary {
  background: var(--mo-primary);
  border-color: var(--mo-primary);
  color: #fff;
  box-shadow: var(--mo-shadow-soft);
}

.primary:hover,
.primary:focus-visible {
  background: var(--mo-primary-dark);
  border-color: var(--mo-primary-dark);
  color: #fff;
}

.secondary {
  background: #fff;
  border-color: var(--mo-line);
  color: var(--mo-headline);
  font-size: 15px;
  padding: 13px 20px;
}

.secondary:hover,
.secondary:focus-visible {
  border-color: var(--mo-primary);
  color: var(--mo-primary-dark);
  background: var(--mo-primary-soft);
}

.ghost {
  background: transparent;
  border-color: var(--mo-line);
  color: var(--mo-body);
  font-size: 15px;
  padding: 13px 20px;
}

.ghost:hover,
.ghost:focus-visible {
  border-color: var(--mo-primary);
  color: var(--mo-primary-dark);
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--mo-primary);
  outline-offset: 2px;
}

a.disabled {
  pointer-events: none;
  opacity: 0.5;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#start-button {
  width: 100%;
  margin-top: 8px;
}

#restart-button {
  margin-top: 8px;
}

/* --------------------------------------------------------------------------
   Processing state
   -------------------------------------------------------------------------- */
.status {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 24px 0 8px;
}

.spinner {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 5px solid var(--mo-line-soft);
  border-top-color: var(--mo-primary);
  animation: spin 1s linear infinite;
}

.pulse {
  color: var(--mo-body);
  text-align: center;
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 1;
  }
}

/* --------------------------------------------------------------------------
   Results
   -------------------------------------------------------------------------- */
.session-summary {
  display: inline-block;
  margin-bottom: 20px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--mo-accent);
  color: #14342e;
  font-size: 14px;
  font-weight: 600;
}

.results-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.results-buttons,
.downloads {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 10px;
  border: 1px solid var(--mo-line);
  background: #fff;
  color: var(--mo-headline);
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease,
    box-shadow 0.15s ease;
}

.icon-btn:hover,
.icon-btn:focus-visible {
  border-color: var(--mo-primary);
  background: var(--mo-primary-soft);
  color: var(--mo-primary-dark);
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 167, 157, 0.15);
}

.icon-btn.disabled,
.icon-btn[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
}

.icon-btn__svg {
  display: block;
}

.downloads {
  margin-top: 0;
}

pre,
.markdown-output {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: "SFMono-Regular", Menlo, Consolas, "Fira Code", monospace;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mo-headline);
  background: var(--mo-light);
  border: 1px solid var(--mo-line-soft);
  border-radius: var(--mo-radius-sm);
  padding: 20px;
  max-height: 440px;
  overflow: auto;
}

/* --------------------------------------------------------------------------
   Previous sessions (dropdown picker)
   -------------------------------------------------------------------------- */
.session-history-card {
  border-top: 3px solid var(--mo-primary);
}

.session-history-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.session-history-header h2 {
  margin: 0 0 6px;
}

.session-history-refresh {
  padding: 10px 16px;
  font-size: 14px;
  flex: none;
}

.session-history-desc {
  margin: 0;
  color: var(--mo-body);
  font-size: 15px;
}

.sessions-list-host {
  min-height: 52px;
}

.session-picker {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
}

.session-select {
  width: 100%;
  min-width: 0;
}

.session-picker__open {
  white-space: nowrap;
}

.session-picker-status {
  margin: 12px 0 0;
  font-size: 14px;
  font-weight: 600;
}

.session-picker-status--error {
  color: var(--mo-danger);
}

.session-picker-status--info {
  color: var(--mo-body);
}

/* --------------------------------------------------------------------------
   Modals / structured viewers
   -------------------------------------------------------------------------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(23, 36, 38, 0.55);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 1000;
}

.modal.hidden {
  display: none !important;
}

.modal-content {
  background: #fff;
  border: 1px solid var(--mo-line-soft);
  border-radius: var(--mo-radius);
  padding: 28px;
  width: min(960px, 100%);
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 30px 70px rgba(23, 36, 38, 0.25);
}

.modal-content--viewer {
  width: min(1040px, 100%);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--mo-line-soft);
  flex: 0 0 auto;
}

.modal-header__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.modal-kicker {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mo-primary-dark);
}

.modal-body,
.viewer-body {
  /* Scroll the list inside the modal; do not shrink individual cards. */
  flex: 1 1 auto;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  padding-right: 6px;
  -webkit-overflow-scrolling: touch;
}

.viewer-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-bottom: 8px;
}

.viewer-card {
  background: var(--mo-light);
  border: 1px solid var(--mo-line-soft);
  border-left: 4px solid var(--mo-primary);
  border-radius: var(--mo-radius-sm);
  padding: 0;
  /* Critical: overflow + flex default shrink was collapsing cards to badge-only height. */
  overflow: visible;
  flex: 0 0 auto;
  min-height: auto;
}

.viewer-card__header {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 20px 12px;
  background: linear-gradient(180deg, rgba(0, 167, 157, 0.08), rgba(0, 167, 157, 0));
  border-radius: var(--mo-radius-sm) var(--mo-radius-sm) 0 0;
}

.viewer-card__badge {
  display: inline-flex;
  align-self: flex-start;
  padding: 4px 10px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--mo-line-soft);
  color: var(--mo-primary-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.viewer-card__title {
  margin: 0;
  font-size: 18px;
  line-height: 1.35;
  color: var(--mo-headline);
  font-weight: 600;
}

.viewer-card__body {
  padding: 4px 20px 18px;
  color: var(--mo-headline);
}

.lesson-points {
  margin: 0;
  padding-left: 20px;
}

.lesson-points li,
.lesson-point {
  margin-bottom: 8px;
  color: var(--mo-headline);
}

.lesson-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.lesson-block {
  color: var(--mo-headline);
  font-size: 15px;
  line-height: 1.65;
}

.lesson-block .md-h,
.lesson-points .md-h,
.viewer-card__body .md-h {
  margin: 0 0 8px;
  color: var(--mo-headline);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.lesson-block .md-h3,
.lesson-points .md-h3 {
  font-size: 16px;
}

.lesson-block .md-h2,
.lesson-points .md-h2 {
  font-size: 17px;
}

.lesson-block .md-list,
.lesson-points .md-list,
.viewer-card__body .md-list {
  margin: 8px 0 0;
  padding-left: 1.2em;
}

.lesson-block .md-list li,
.viewer-card__body .md-list li {
  margin-bottom: 6px;
}

.lesson-block strong,
.lesson-points strong,
.quiz-option__text strong,
.viewer-card__title strong {
  font-weight: 700;
  color: var(--mo-headline);
}

.lesson-block em,
.lesson-points em,
.quiz-option__text em {
  font-style: italic;
}

.lesson-block .md-code,
.lesson-points .md-code,
.quiz-option__text .md-code {
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: rgba(23, 36, 38, 0.06);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}

.lesson-block .md-link,
.lesson-points .md-link {
  color: var(--mo-primary-dark);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.lesson-block .md-p {
  margin: 0 0 8px;
}

.lesson-block .md-p:last-child {
  margin-bottom: 0;
}

.quiz-options {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quiz-option {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--mo-line-soft);
  background: #fff;
}

.quiz-option--correct {
  border-color: rgba(0, 167, 157, 0.45);
  background: rgba(0, 167, 157, 0.08);
}

.quiz-option--incorrect {
  background: #fff;
}

.quiz-option__marker {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  background: var(--mo-line);
}

.quiz-option--correct .quiz-option__marker {
  background: var(--mo-primary);
}

.quiz-option__text {
  color: var(--mo-headline);
  font-weight: 500;
}

.quiz-option__tag {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--mo-body);
}

.quiz-option--correct .quiz-option__tag {
  color: var(--mo-primary-dark);
}

.viewer-figure {
  margin: 14px 0 0;
  padding: 0;
}

.viewer-figure img,
.modal-body img {
  display: block;
  max-width: 100%;
  border-radius: var(--mo-radius-sm);
  border: 1px solid var(--mo-line-soft);
  background: #fff;
}

.viewer-empty {
  margin: 0;
  padding: 28px 18px;
  text-align: center;
  font-weight: 600;
  color: var(--mo-body);
  border: 1px dashed var(--mo-line);
  border-radius: var(--mo-radius-sm);
  background: #fff;
}

.viewer-empty--inline {
  padding: 12px 14px;
  text-align: left;
  font-weight: 500;
}

/* Back-compat for any residual section markup */
.modal-body section {
  background: var(--mo-light);
  border: 1px solid var(--mo-line-soft);
  border-left: 3px solid var(--mo-primary);
  border-radius: var(--mo-radius-sm);
  padding: 20px;
  margin-bottom: 16px;
}

.modal-body h4 {
  margin-bottom: 10px;
}

.modal-body ul {
  padding-left: 20px;
  margin: 0;
}

.modal-body li {
  margin-bottom: 6px;
}

.modal-message {
  margin: 0;
  font-weight: 600;
  text-align: center;
  color: var(--mo-headline);
}

.modal-message--loading {
  color: var(--mo-body);
}

.modal-message--error {
  color: var(--mo-danger);
}

.modal-close {
  font-size: 20px;
  line-height: 1;
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: 50%;
  flex: none;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  flex: none;
  background: #fff;
  border-top: 1px solid var(--mo-line);
}

.site-footer__inner {
  max-width: var(--mo-container);
  margin: 0 auto;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--mo-body);
}

.site-footer a {
  color: var(--mo-primary-dark);
  font-weight: 600;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 820px) {
  .field-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
}

@media (max-width: 640px) {
  .site-header__inner {
    padding: 12px 16px;
  }

  .site-header__meta {
    display: none;
  }

  .brand__logo {
    height: 34px;
  }

  .container {
    padding: 32px 16px 56px;
  }

  .card {
    padding: 22px;
  }

  .modal {
    padding: 12px;
  }

  .modal-content {
    padding: 18px;
    max-height: 92vh;
  }

  .results-buttons .secondary,
  .results-buttons .primary {
    flex: 1 1 100%;
  }

  .session-picker {
    grid-template-columns: minmax(0, 1fr);
  }

  .session-picker__open {
    width: 100%;
  }

  .quiz-option {
    grid-template-columns: 28px 1fr;
  }

  .quiz-option__tag {
    grid-column: 2;
  }
}

/* --------------------------------------------------------------------------
   UI display prefs (form) + interactive lesson/quiz
   -------------------------------------------------------------------------- */
.ui-prefs {
  margin: 8px 0 20px;
  padding: 18px 18px 8px;
  border: 1px solid var(--mo-line-soft);
  border-radius: var(--mo-radius-sm);
  background: var(--mo-light);
}

.ui-prefs legend {
  padding: 0 8px;
  font-weight: 700;
  color: var(--mo-headline);
}

.ui-prefs__help {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--mo-body);
}

.ui-prefs__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 8px;
}

.ui-prefs__label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--mo-headline);
  margin-bottom: 10px;
}

.ui-prefs__checks {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ui-prefs__check {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 10px;
  align-items: start;
  margin: 0;
  cursor: pointer;
}

.ui-prefs__check input {
  width: auto;
  margin-top: 4px;
}

.ui-prefs__check-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 14px;
  color: var(--mo-headline);
}

.ui-prefs__check-text small {
  color: var(--mo-body);
  font-weight: 500;
}

.ui-prefs__mode {
  margin-bottom: 8px;
}

@media (max-width: 820px) {
  .ui-prefs__grid {
    grid-template-columns: 1fr;
  }
}

.ix-shell {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ix-toolbar {
  position: sticky;
  top: 0;
  z-index: 2;
  background: #fff;
  border: 1px solid var(--mo-line-soft);
  border-radius: var(--mo-radius-sm);
  padding: 12px 14px;
  box-shadow: var(--mo-shadow-soft);
}

.ix-toolbar__row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: end;
}

.ix-toolbar__field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--mo-body);
  min-width: 140px;
  flex: 1 1 140px;
}

.ix-toolbar__field select {
  font-size: 14px;
  padding: 10px 12px;
}

.ix-toolbar__hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--mo-body);
}

.ix-style-chip {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--mo-primary-soft);
  color: var(--mo-primary-dark);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.ix-style-chip--soft {
  background: #fff;
  border: 1px solid var(--mo-line);
  color: var(--mo-body);
}

.ix-lesson__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
}

.ix-lesson {
  background: var(--mo-light);
  border: 1px solid var(--mo-line-soft);
  border-left: 4px solid var(--mo-primary);
  border-radius: var(--mo-radius-sm);
  padding: 16px 18px 18px;
  margin-bottom: 14px;
  animation: ix-rise 0.35s ease both;
}

@keyframes ix-rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* Flashcards — full-width carousel with prev/next arrows */
.ix-flashcard-deck {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}

.ix-flashcard-stage {
  width: 100%;
  min-height: 220px;
}

.ix-flashcard {
  width: 100%;
  display: none;
  flex: 0 0 auto;
}

.ix-flashcard.is-active {
  display: block;
}

.ix-flashcard[hidden] {
  display: none !important;
}

.ix-flashcard__hit {
  width: 100%;
  display: block;
  border: none;
  background: transparent;
  padding: 0;
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: inherit;
}

.ix-flashcard__face {
  width: 100%;
  box-sizing: border-box;
  border-radius: 16px;
  border: 1px solid var(--mo-line-soft);
  background: #fff;
  padding: 28px 28px 24px;
  min-height: 240px;
  box-shadow: var(--mo-shadow-soft);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.ix-flashcard__hit:hover .ix-flashcard__face--front {
  border-color: var(--mo-primary);
  box-shadow: 0 10px 28px rgba(23, 36, 38, 0.08);
}

.ix-flashcard__face--back {
  border-color: rgba(0, 167, 157, 0.35);
  background: linear-gradient(180deg, rgba(0, 167, 157, 0.06), #fff 40%);
}

.ix-flashcard__face[hidden] {
  display: none !important;
}

.ix-flashcard__hint {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mo-primary-dark);
}

.ix-flashcard__title {
  margin: 0 0 14px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 600;
  color: var(--mo-headline);
  line-height: 1.3;
}

.ix-flashcard__cue {
  margin: 20px 0 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--mo-body);
  opacity: 0.85;
}

.ix-flashcard__content {
  color: var(--mo-headline);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
}

.ix-flashcard__content strong,
.ix-flashcard__content b {
  font-weight: 600;
  color: var(--mo-headline);
}

.ix-flashcard__content .md-h,
.ix-flashcard__content h3,
.ix-flashcard__content h4 {
  font-size: 16px;
  font-weight: 600;
  margin: 0.6em 0 0.35em;
}

.ix-flashcard-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  margin-top: 4px;
}

.ix-flashcard-nav__btn {
  min-width: 48px;
  height: 48px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--mo-line);
  background: #fff;
  color: var(--mo-headline);
  font-size: 15px;
  font-weight: 700;
  font-family: inherit;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex: none;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease,
    transform 0.15s ease, box-shadow 0.15s ease;
}

.ix-flashcard-nav__btn span[aria-hidden="true"] {
  font-size: 22px;
  line-height: 1;
}

.ix-flashcard-nav__btn:hover:not(:disabled),
.ix-flashcard-nav__btn:focus-visible:not(:disabled) {
  border-color: var(--mo-primary);
  background: var(--mo-primary-soft);
  color: var(--mo-primary-dark);
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 167, 157, 0.18);
  transform: translateY(-1px);
}

.ix-flashcard-nav__btn:active:not(:disabled) {
  transform: translateY(0);
  background: rgba(0, 167, 157, 0.18);
}

.ix-flashcard-nav__btn--next.is-ready:not(:disabled) {
  border-color: var(--mo-primary);
  color: var(--mo-primary-dark);
}

.ix-flashcard-nav__btn--next.is-next-lesson:not(:disabled) {
  background: var(--mo-primary);
  border-color: var(--mo-primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(0, 167, 157, 0.28);
  animation: ix-next-pulse 1.6s ease-in-out infinite;
}

.ix-flashcard-nav__btn--next.is-next-lesson:hover:not(:disabled),
.ix-flashcard-nav__btn--next.is-next-lesson:focus-visible:not(:disabled) {
  background: var(--mo-primary-dark);
  border-color: var(--mo-primary-dark);
  color: #fff;
  box-shadow: 0 10px 24px rgba(0, 167, 157, 0.35);
}

.ix-flashcard-nav__btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  animation: none;
}

.ix-flashcard-nav__status {
  font-size: 14px;
  font-weight: 700;
  color: var(--mo-body);
  letter-spacing: 0.02em;
}

.ix-btn-next.is-next-lesson:not(:disabled),
.ix-stepper__controls .secondary.is-next-lesson:not(:disabled) {
  background: var(--mo-primary);
  border-color: var(--mo-primary);
  color: #fff;
  animation: ix-next-pulse 1.6s ease-in-out infinite;
}

.ix-btn-next.is-next-lesson:hover:not(:disabled),
.ix-stepper__controls .secondary.is-next-lesson:hover:not(:disabled) {
  background: var(--mo-primary-dark);
  border-color: var(--mo-primary-dark);
}

.ix-lesson.is-target-next {
  outline: 2px solid var(--mo-primary);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px rgba(0, 167, 157, 0.12);
  transition: outline-color 0.2s ease, box-shadow 0.2s ease;
}

.ix-lesson.is-arrive-pulse {
  animation: ix-lesson-arrive 1s ease;
}

@keyframes ix-next-pulse {
  0%,
  100% {
    box-shadow: 0 8px 20px rgba(0, 167, 157, 0.22);
    transform: translateY(0);
  }
  50% {
    box-shadow: 0 12px 28px rgba(0, 167, 157, 0.38);
    transform: translateY(-1px);
  }
}

@keyframes ix-lesson-arrive {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 167, 157, 0.35);
  }
  40% {
    box-shadow: 0 0 0 10px rgba(0, 167, 157, 0.12);
  }
  100% {
    box-shadow: var(--mo-shadow-soft);
  }
}

@media (max-width: 520px) {
  .ix-flashcard-nav__text {
    display: none;
  }
  .ix-flashcard-nav__btn {
    width: 48px;
    padding: 0;
  }
}

.ix-lesson--flashcard {
  overflow: visible;
  width: 100%;
}

.ix-lesson--flashcard .ix-figure,
.ix-lesson--flashcard .viewer-figure {
  margin-top: 12px;
}

.ix-lesson--flashcard .ix-figure img,
.ix-lesson--flashcard .viewer-figure img {
  max-height: 180px;
  width: auto;
  margin: 0 auto;
}

/* Accordion */
.ix-acc-item {
  border: 1px solid var(--mo-line-soft);
  border-radius: 12px;
  background: #fff;
  margin-bottom: 8px;
  overflow: hidden;
}

.ix-acc-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  border: none;
  background: transparent;
  padding: 12px 14px;
  font: inherit;
  font-weight: 600;
  color: var(--mo-headline);
  cursor: pointer;
}

.ix-acc-chevron {
  transition: transform 0.25s ease;
  color: var(--mo-primary-dark);
}

.ix-acc-item.is-open .ix-acc-chevron {
  transform: rotate(180deg);
}

.ix-acc-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  padding: 0 14px;
  transition: max-height 0.35s ease, opacity 0.25s ease, padding 0.25s ease;
}

.ix-acc-item.is-open .ix-acc-panel {
  max-height: 800px;
  opacity: 1;
  padding: 0 14px 14px;
}

/* Stepper */
.ix-step {
  display: none;
  animation: ix-rise 0.3s ease both;
}

.ix-step.is-active {
  display: block;
}

.ix-stepper__controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 14px;
}

.ix-stepper__progress {
  font-size: 13px;
  font-weight: 700;
  color: var(--mo-body);
}

/* Quiz chrome */
.ix-scoreboard {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.ix-scoreboard__stat {
  background: var(--mo-light);
  border: 1px solid var(--mo-line-soft);
  border-radius: 12px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 12px;
  color: var(--mo-body);
}

.ix-scoreboard__stat strong {
  font-size: 20px;
  color: var(--mo-headline);
}

.ix-progress {
  height: 8px;
  border-radius: 999px;
  background: var(--mo-line-soft);
  overflow: hidden;
}

.ix-progress__bar {
  height: 100%;
  background: linear-gradient(90deg, var(--mo-primary), #0f766e);
  transition: width 0.35s ease;
}

.ix-question {
  background: var(--mo-light);
  border: 1px solid var(--mo-line-soft);
  border-left: 4px solid var(--mo-primary);
  border-radius: var(--mo-radius-sm);
  padding: 16px 18px 18px;
  animation: ix-rise 0.3s ease both;
}

.ix-options--list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 12px 0;
}

.ix-list-option {
  display: grid;
  grid-template-columns: 20px auto 1fr;
  gap: 10px;
  align-items: start;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--mo-line-soft);
  background: #fff;
  cursor: pointer;
}

.ix-list-option input {
  width: auto;
  margin-top: 3px;
}

.ix-list-option.is-selected {
  border-color: rgba(0, 167, 157, 0.5);
  background: rgba(0, 167, 157, 0.06);
}

.ix-list-option.is-correct {
  border-color: rgba(0, 167, 157, 0.7);
  background: rgba(0, 167, 157, 0.12);
}

.ix-list-option.is-wrong {
  border-color: rgba(185, 28, 28, 0.45);
  background: rgba(185, 28, 28, 0.06);
}

.ix-options--tiles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0;
}

.ix-tile {
  border: 1px solid var(--mo-line-soft);
  border-radius: 14px;
  background: #fff;
  padding: 16px;
  text-align: left;
  font: inherit;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  min-height: 88px;
}

.ix-tile:hover {
  transform: translateY(-2px);
  box-shadow: var(--mo-shadow-soft);
}

.ix-tile.is-selected {
  border-color: var(--mo-primary);
  background: rgba(0, 167, 157, 0.08);
  box-shadow: 0 0 0 2px rgba(0, 167, 157, 0.15);
}

.ix-tile.is-correct {
  border-color: var(--mo-primary);
  background: rgba(0, 167, 157, 0.14);
}

.ix-tile.is-wrong {
  border-color: rgba(185, 28, 28, 0.5);
  background: rgba(185, 28, 28, 0.08);
}

.ix-tile__label {
  display: inline-flex;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  background: var(--mo-primary-soft);
  color: var(--mo-primary-dark);
  font-weight: 700;
  margin-bottom: 8px;
}

.ix-options--chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.ix-chip {
  border: 1px solid var(--mo-line);
  border-radius: 999px;
  background: #fff;
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.ix-chip.is-selected {
  border-color: var(--mo-primary);
  background: rgba(0, 167, 157, 0.12);
}

.ix-chip.is-correct {
  border-color: var(--mo-primary);
  background: rgba(0, 167, 157, 0.18);
}

.ix-chip.is-wrong {
  border-color: rgba(185, 28, 28, 0.45);
  background: rgba(185, 28, 28, 0.08);
}

.ix-question__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.ix-feedback {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  font-weight: 700;
}

.ix-feedback--ok {
  background: rgba(0, 167, 157, 0.12);
  color: var(--mo-primary-dark);
}

.ix-feedback--bad {
  background: rgba(185, 28, 28, 0.08);
  color: var(--mo-danger);
}

.ix-feedback__detail {
  font-weight: 600;
  opacity: 0.9;
}

.ix-final-score {
  text-align: center;
  padding: 18px;
  border-radius: var(--mo-radius-sm);
  background: linear-gradient(180deg, rgba(0, 167, 157, 0.12), rgba(0, 167, 157, 0.04));
  border: 1px solid rgba(0, 167, 157, 0.25);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.ix-final-score h4 {
  margin: 0;
}

.ix-final-score p {
  margin: 0;
}

.ix-retake-btn {
  white-space: nowrap;
}

.ix-retake-btn--primary {
  min-width: 200px;
}

.ix-question__actions .ix-retake-btn {
  margin-left: auto;
}

.ix-reveal-gate {
  margin: 14px 0;
  padding: 18px;
  border: 1px dashed var(--mo-line);
  border-radius: 12px;
  background: #fff;
  text-align: center;
}

.ix-reveal-gate p {
  margin: 0 0 12px;
  font-weight: 600;
  color: var(--mo-headline);
}

@media (max-width: 640px) {
  .ix-options--tiles {
    grid-template-columns: 1fr;
  }
  .ix-scoreboard {
    grid-template-columns: 1fr;
  }
  .ix-question__actions .primary,
  .ix-question__actions .secondary,
  .ix-question__actions .ghost {
    flex: 1 1 100%;
  }
}

/* --------------------------------------------------------------------------
   Flow clarity: steps, sections, style cards, secondary sessions
   -------------------------------------------------------------------------- */
.flow-steps {
  list-style: none;
  margin: 24px auto 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  max-width: 520px;
}

.flow-steps__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--mo-line);
  background: #fff;
  font-size: 13px;
  font-weight: 600;
  color: var(--mo-body);
}

.flow-steps__item span {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--mo-line-soft);
  font-size: 12px;
}

.flow-steps__item.is-active {
  border-color: var(--mo-primary);
  color: var(--mo-primary-dark);
  background: var(--mo-primary-soft);
}

.flow-steps__item.is-active span {
  background: var(--mo-primary);
  color: #fff;
}

.flow-steps__item.is-done {
  border-color: rgba(0, 167, 157, 0.35);
  color: var(--mo-primary-dark);
}

.card--primary {
  border-top: 3px solid var(--mo-primary);
}

.card--secondary {
  margin-top: 8px;
  background: #fff;
  box-shadow: var(--mo-shadow-soft);
}

.card-heading {
  margin-bottom: 22px;
}

.card-heading__step {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mo-primary-dark);
}

.card-heading h2 {
  margin: 0 0 8px;
}

.card-heading__desc {
  margin: 0;
  color: var(--mo-body);
  font-size: 15px;
  max-width: 46rem;
}

.card-heading--compact {
  margin-bottom: 12px;
}

.form-section {
  margin-bottom: 28px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--mo-line-soft);
}

.form-section:last-of-type {
  border-bottom: none;
}

.form-section__title {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 700;
  color: var(--mo-headline);
}

.form-section__help {
  margin: -6px 0 16px;
  font-size: 14px;
  color: var(--mo-body);
  line-height: 1.5;
}

.field-or {
  text-align: center;
  margin: -8px 0 12px;
  font-size: 13px;
  font-weight: 600;
  color: #98a2b3;
  text-transform: lowercase;
}

.primary--xl {
  width: 100%;
  margin-top: 4px;
  font-size: 17px;
  padding: 16px 22px;
}

.style-picker {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 16px;
}

.style-picker__heading {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--mo-headline);
}

.style-card-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.style-card {
  display: grid;
  grid-template-columns: 108px 1fr;
  gap: 12px;
  align-items: stretch;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--mo-line);
  border-radius: 14px;
  background: #fff;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  position: relative;
}

.style-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.style-card:hover {
  border-color: var(--mo-primary);
}

.style-card.is-checked {
  border-color: var(--mo-primary);
  background: rgba(0, 167, 157, 0.06);
  box-shadow: 0 0 0 2px rgba(0, 167, 157, 0.12);
}

.style-card__preview {
  border-radius: 10px;
  background: var(--mo-light);
  border: 1px solid var(--mo-line-soft);
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  overflow: hidden;
}

.style-card__body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 2px;
}

.style-card__title {
  font-size: 14px;
  color: var(--mo-headline);
}

.style-card__blurb {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--mo-body);
}

.style-card__example {
  margin: 2px 0 0;
  font-size: 11.5px;
  line-height: 1.4;
  color: #6b778c;
  font-style: italic;
}

.style-apply-field {
  max-width: 520px;
}

/* Coverage level — three square blocks (basic 30% / average 50% / full 100%) */
.level-field {
  margin-top: 4px;
}

.level-field__title {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 700;
  color: var(--mo-headline);
}

.level-field__help {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mo-body);
}

.level-grid {
  display: grid;
  /* Each block is 30% of the row; the remaining 10% becomes the two gutters. */
  grid-template-columns: repeat(3, 30%);
  justify-content: space-between;
  gap: 0;
}

.level-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 6px;
  aspect-ratio: 1 / 1;
  margin: 0;
  padding: 16px;
  border: 1px solid var(--mo-line);
  border-radius: var(--mo-radius-sm);
  background: #fff;
  cursor: pointer;
  text-align: left;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.level-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.level-card:hover {
  border-color: var(--mo-primary);
}

.level-card:focus-within {
  border-color: var(--mo-primary);
  box-shadow: 0 0 0 3px rgba(0, 167, 157, 0.18);
}

.level-card.is-checked {
  border-color: var(--mo-primary);
  background: rgba(0, 167, 157, 0.06);
  box-shadow: 0 0 0 2px rgba(0, 167, 157, 0.12);
}

.level-card__pct {
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--mo-primary);
}

.level-card.is-checked .level-card__pct {
  color: var(--mo-primary-dark);
}

.level-card__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--mo-headline);
}

.level-card__desc {
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--mo-body);
}

/* Mini previews inside style cards */
.spv {
  width: 100%;
  font-size: 10px;
  color: var(--mo-headline);
}

.spv-kicker {
  display: block;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mo-primary-dark);
  margin-bottom: 2px;
}

.spv--flash {
  display: flex;
  align-items: center;
  gap: 4px;
}

.spv-flash__face {
  flex: 1;
  background: #fff;
  border: 1px solid var(--mo-line);
  border-radius: 8px;
  padding: 6px;
  min-height: 64px;
}

.spv-flash__face--back {
  background: rgba(0, 167, 157, 0.08);
}

.spv-flash__arrow {
  color: var(--mo-primary-dark);
  font-weight: 700;
}

.spv-acc {
  display: flex;
  justify-content: space-between;
  background: #fff;
  border: 1px solid var(--mo-line);
  border-radius: 6px;
  padding: 5px 7px;
  margin-bottom: 4px;
  font-weight: 600;
}

.spv-acc.is-open {
  border-color: var(--mo-primary);
  background: rgba(0, 167, 157, 0.08);
}

.spv-acc-line {
  height: 6px;
  margin: 0 6px 4px;
  border-radius: 4px;
  background: var(--mo-line-soft);
}

.spv-step-card {
  background: #fff;
  border: 1px solid var(--mo-line);
  border-radius: 8px;
  padding: 10px;
  text-align: center;
  font-weight: 700;
  margin-bottom: 6px;
}

.spv-step-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.spv-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mo-line);
}

.spv-dot.is-on {
  background: var(--mo-primary);
}

.spv-row {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid var(--mo-line-soft);
  border-radius: 6px;
  padding: 4px 6px;
  margin-bottom: 3px;
}

.spv-row i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1.5px solid var(--mo-line);
  display: inline-block;
}

.spv-row.is-on {
  border-color: var(--mo-primary);
  background: rgba(0, 167, 157, 0.08);
}

.spv-row i.is-on {
  border-color: var(--mo-primary);
  background: var(--mo-primary);
}

.spv--tiles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.spv-tile {
  background: #fff;
  border: 1px solid var(--mo-line);
  border-radius: 8px;
  text-align: center;
  padding: 10px 0;
  font-weight: 700;
}

.spv-tile.is-on {
  border-color: var(--mo-primary);
  background: rgba(0, 167, 157, 0.12);
}

.spv--chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
}

.spv-chip {
  border-radius: 999px;
  border: 1px solid var(--mo-line);
  background: #fff;
  padding: 5px 8px;
  font-weight: 700;
}

.spv-chip.is-on {
  border-color: var(--mo-primary);
  background: rgba(0, 167, 157, 0.12);
}

.spv-reveal-q {
  text-align: center;
  font-weight: 700;
  margin-bottom: 8px;
}

.spv-reveal-btn {
  text-align: center;
  border-radius: 8px;
  background: var(--mo-primary);
  color: #fff;
  font-weight: 700;
  padding: 8px 6px;
}

.raw-output {
  margin: 18px 0;
  border: 1px solid var(--mo-line-soft);
  border-radius: var(--mo-radius-sm);
  background: var(--mo-light);
  padding: 10px 14px;
}

.raw-output summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--mo-headline);
}

.raw-output .markdown-output {
  margin-top: 12px;
  max-height: 280px;
}

.session-history-card {
  border-top: 1px solid var(--mo-line-soft);
}

/* --------------------------------------------------------------------------
   API reference at the foot of the page
   -------------------------------------------------------------------------- */
.api-card {
  border-top: 1px solid var(--mo-line-soft);
}

.api-subtitle {
  margin: 24px 0 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--mo-headline);
}

.api-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--mo-line-soft);
  border-radius: var(--mo-radius-sm);
}

.api-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.api-table th,
.api-table td {
  text-align: left;
  vertical-align: top;
  padding: 10px 14px;
  border-bottom: 1px solid var(--mo-line-soft);
}

.api-table thead th {
  background: var(--mo-light);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--mo-headline);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.api-table tbody tr:last-child th,
.api-table tbody tr:last-child td {
  border-bottom: none;
}

.api-table code,
.api-endpoints code,
.api-card p code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  color: var(--mo-primary-dark);
  background: var(--mo-primary-soft);
  border-radius: 5px;
  padding: 2px 6px;
  white-space: nowrap;
}

.api-endpoints {
  margin: 0;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mo-body);
}

.api-endpoints li + li {
  margin-top: 8px;
}

.api-details {
  margin-top: 24px;
  border: 1px solid var(--mo-line-soft);
  border-radius: var(--mo-radius-sm);
  padding: 14px 16px;
  background: var(--mo-light);
}

.api-details > summary {
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  color: var(--mo-headline);
}

.api-example__caption {
  margin: 18px 0 8px;
  font-size: 13px;
  color: var(--mo-body);
}

.api-example {
  margin: 0;
  overflow-x: auto;
  background: #fff;
  border: 1px solid var(--mo-line-soft);
  border-radius: var(--mo-radius-sm);
  padding: 14px 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mo-headline);
  white-space: pre;
}

@media (max-width: 820px) {
  .style-picker {
    grid-template-columns: 1fr;
  }
  .style-card {
    grid-template-columns: 88px 1fr;
  }
  /* Squares get too small on narrow screens — stack and let height follow text. */
  .level-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .level-card {
    aspect-ratio: auto;
    gap: 4px;
  }
}