/*
 * Spinnit learning experience, version 1.
 *
 * This file is loaded only by learning pages. Component rules remain scoped
 * beneath a learning container so existing tools and hubs keep their styles.
 */

:where(.learn-page, .learn-shell) {
  --learn-content-width: 760px;
  --learn-wide-width: 1040px;
  width: min(100%, var(--learn-wide-width));
  margin-inline: auto;
  padding: 1.5rem 1rem 4rem;
}

:where(.learn-page, .learn-shell) > * {
  min-width: 0;
}

:where(.learn-page, .learn-shell) :where(h1, h2, h3) {
  color: var(--text);
  line-height: 1.2;
  text-wrap: balance;
}

:where(.learn-page, .learn-shell) h1 {
  max-width: 20ch;
  margin-block: 0 0.8rem;
  font-size: clamp(2rem, 8vw, 3.6rem);
  letter-spacing: -0.035em;
}

:where(.learn-page, .learn-shell) h2 {
  margin-block: 2.5rem 0.75rem;
  font-size: clamp(1.35rem, 5vw, 1.8rem);
  letter-spacing: -0.02em;
}

:where(.learn-page, .learn-shell) h3 {
  margin-block: 1.5rem 0.55rem;
  font-size: 1.05rem;
}

:where(.learn-page, .learn-shell) p,
:where(.learn-page, .learn-shell) li {
  max-width: 72ch;
}

:where(.learn-page, .learn-shell) p + p {
  margin-top: 1rem;
}

:where(.learn-page, .learn-shell) :where(ul, ol) {
  padding-inline-start: 1.35rem;
}

:where(.learn-page, .learn-shell) li + li {
  margin-top: 0.45rem;
}

:where(.learn-page, .learn-shell) :where(a, button, summary, label) {
  -webkit-tap-highlight-color: transparent;
}

:where(.learn-page, .learn-shell) :where(a, button, summary):focus-visible {
  outline: 2px solid var(--accent2);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px var(--accent-glow);
}

:where(.learn-page, .learn-shell) :where(pre, code, kbd, samp) {
  font-family: var(--mono);
}

:where(.learn-page, .learn-shell) :where(pre, .learn-prompt, .prompt-text) {
  max-width: 100%;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}

:where(.learn-page, .learn-shell) :not(pre) > code {
  overflow-wrap: anywhere;
}

.learn-hero,
.learn-lesson-header,
.learn-lesson__header,
.learn-content,
.learn-lesson__content {
  width: min(100%, var(--learn-content-width, 760px));
}

.learn-lesson__article {
  min-width: 0;
}

.learn-hero,
.learn-lesson-header,
.learn-lesson__header {
  margin-bottom: 2rem;
}

.learn-eyebrow,
.learn-kicker,
.learn-section-label {
  margin-bottom: 0.65rem;
  color: var(--accent2);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.learn-lede,
.learn-lesson-header__lede,
.learn-lesson__lede {
  color: var(--text2);
  font-size: clamp(1rem, 3vw, 1.15rem);
  line-height: 1.75;
}

.learn-meta,
.learn-lesson-meta,
.learn-lesson__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-top: 1rem;
  color: var(--text2);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.learn-meta > *,
.learn-lesson-meta > *,
.learn-lesson__meta > * {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
}

.learn-lesson__meta {
  margin-bottom: 0;
  padding: 0;
  list-style: none;
}

.learn-section-heading > :where(h2, h3) {
  margin-top: 0;
}

.learn-section-heading > :last-child {
  margin-bottom: 0;
}

.learn-panel,
.learn-objectives,
.learn-callout,
.learn-takeaway,
.learn-related,
.learn-prompt-makeover,
.learn-exercise,
.learn-progress,
.learn-course-nav {
  width: 100%;
  margin-block: 1.5rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg2);
}

.learn-objectives h2,
.learn-objectives h3,
.learn-callout h2,
.learn-callout h3,
.learn-takeaway h2,
.learn-takeaway h3,
.learn-related h2,
.learn-related h3,
.learn-progress h2,
.learn-progress h3,
.learn-course-nav h2,
.learn-course-nav h3 {
  margin-top: 0;
}

.learn-objectives ul,
.learn-takeaway ul {
  margin-top: 0.75rem;
}

.learn-callout,
.learn-takeaway {
  border-inline-start: 4px solid var(--accent2);
}

.learn-callout--caution {
  border-inline-start-color: var(--text2);
}

.learn-lesson__content > section + section {
  margin-top: 2.5rem;
}

.learn-comparison {
  display: grid;
  gap: 0.85rem;
  margin-block: 1.25rem;
}

.learn-comparison article {
  min-width: 0;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg2);
}

.learn-comparison article > h3 {
  margin-top: 0;
}

.learn-comparison blockquote {
  margin-block: 0.75rem;
  padding: 0.85rem;
  border-inline-start: 3px solid var(--accent2);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--bg3);
  color: var(--text);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.learn-comparison blockquote p {
  margin: 0;
}

.learn-reflection {
  margin-block: 1.25rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg2);
}

.learn-reflection > h3 {
  margin-top: 0;
}

.learn-reflection details {
  margin-top: 1rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  background: var(--bg3);
}

.learn-reflection summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0.7rem 0.85rem;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}

.learn-reflection details > :not(summary) {
  margin-inline: 0.85rem;
}

.learn-reflection details > :last-child {
  margin-bottom: 0.85rem;
}

/* Hub and course-overview actions */
.learn-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-top: 1.25rem;
}

.learn-actions > span {
  color: var(--text2);
  font-size: 0.85rem;
}

.learn-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.7rem 1rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
}

.learn-button:hover {
  border-color: var(--accent2);
  color: var(--text);
  background: var(--bg3);
}

.learn-button--primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--bg);
}

.learn-button--primary:hover {
  border-color: var(--accent2);
  background: var(--accent2);
  color: var(--bg);
}

.learn-page .learn-card-label {
  margin-bottom: 0.55rem;
  color: var(--accent2);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.learn-course-card {
  border-color: var(--border2);
}

.learn-course-card h3 a {
  color: var(--text);
}

.learn-course-card .learn-button {
  width: fit-content;
  margin-top: 1rem;
}

.learn-method {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg2);
}

.learn-method ol {
  margin-block: 0.85rem 1rem;
}

.learn-method > :last-child {
  color: var(--text2);
}

/* Course outline */
.learn-course-nav {
  align-self: start;
}

.learn-course-nav__intro {
  margin-bottom: 1rem;
  color: var(--text2);
  font-size: 0.9rem;
}

.learn-course-nav__level + .learn-course-nav__level {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.learn-course-nav__level-heading {
  margin-bottom: 0.8rem;
}

.learn-course-nav__level-heading h3 {
  margin-top: 0;
}

.learn-course-nav__level-heading p {
  color: var(--text2);
  font-size: 0.85rem;
}

.learn-course-nav :where(ol, ul),
.learn-course-list,
.learn-course-nav__list {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.learn-course-nav li,
.learn-course-list__item,
.learn-course-nav__item {
  max-width: none;
  margin: 0;
}

.learn-course-nav a,
.learn-course-nav [aria-current="page"],
.learn-course-nav__planned,
.learn-course-list__planned {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.75rem;
  min-height: 44px;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text2);
  text-decoration: none;
}

.learn-course-nav a:hover {
  border-color: var(--border2);
  color: var(--text);
  background: var(--bg3);
}

.learn-course-nav [aria-current="page"] {
  border-color: var(--accent2);
  color: var(--text);
  font-weight: 600;
}

.learn-course-nav [aria-current="page"]::before {
  content: none;
}

.learn-course-nav__number {
  color: var(--accent2);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}

.learn-course-nav__title {
  min-width: 0;
  color: var(--text);
}

.learn-course-nav__meta {
  grid-column: 2;
  color: var(--text2);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.learn-course-nav__planned,
.learn-course-list__planned,
.learn-course-nav .is-planned {
  color: var(--text3);
}

.learn-status,
.learn-course-nav__status,
.learn-course-list__status {
  flex: 0 0 auto;
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--border2);
  border-radius: 999px;
  color: var(--text2);
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 700;
  line-height: 1.4;
  text-transform: uppercase;
}

/* Prompt Makeover */
.learn-prompt-makeover {
  padding: 0;
  overflow: clip;
}

.learn-prompt-makeover > header,
.learn-prompt-makeover__header,
.learn-prompt-makeover > .learn-section-heading {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

.learn-prompt-makeover > header :where(h2, h3),
.learn-prompt-makeover__header :where(h2, h3),
.learn-prompt-makeover > .learn-section-heading :where(h2, h3) {
  margin: 0;
}

.learn-prompt-makeover__grid,
.learn-prompt-makeover__steps {
  display: grid;
}

.learn-prompt-makeover__step,
.learn-prompt-makeover section {
  min-width: 0;
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

.learn-prompt-makeover__step:last-child,
.learn-prompt-makeover section:last-child {
  border-bottom: 0;
}

.learn-prompt-makeover__step > h3 {
  margin-top: 0;
}

.learn-prompt-makeover__step--improved {
  background: var(--bg3);
}

.learn-prompt-makeover__step--check {
  border-inline-start: 3px solid var(--text2);
}

.learn-prompt-makeover__label,
.learn-prompt-label,
.learn-example-label,
.illustrative-example-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--accent2);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.learn-prompt,
.learn-prompt-makeover blockquote,
.learn-prompt-makeover pre {
  margin: 0.65rem 0 0;
  padding: 0.85rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  background: var(--bg3);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.84rem;
  line-height: 1.65;
}

.learn-prompt-makeover blockquote {
  border-inline-start: 3px solid var(--accent2);
}

/* Exercise and static feedback */
.learn-exercise fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.learn-exercise__activity + .learn-exercise__activity {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.learn-exercise__activity > h3 {
  margin-top: 0;
}

.learn-exercise__scenario {
  margin-block: 0.65rem 1rem;
  padding: 0.85rem;
  border-inline-start: 3px solid var(--accent2);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--bg3);
  color: var(--text);
}

.learn-exercise legend {
  width: 100%;
  margin-bottom: 0.9rem;
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
}

.learn-exercise__options,
.learn-knowledge-check__options {
  display: grid;
  gap: 0.65rem;
}

.learn-exercise label,
.learn-knowledge-check label,
.learn-option {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  min-height: 44px;
  padding: 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text2);
  cursor: pointer;
}

.learn-exercise label:hover,
.learn-knowledge-check label:hover,
.learn-option:hover {
  border-color: var(--border2);
  color: var(--text);
  background: var(--bg3);
}

.learn-exercise :where(input[type="radio"], input[type="checkbox"]),
.learn-knowledge-check :where(input[type="radio"], input[type="checkbox"]) {
  flex: 0 0 auto;
  width: 1.2rem;
  height: 1.2rem;
  margin-top: 0.15rem;
  accent-color: var(--accent2);
}

.learn-exercise fieldset > .learn-choice + .learn-choice {
  margin-top: 0.65rem;
}

.learn-exercise details,
.learn-model-answer,
.learn-feedback {
  margin-top: 1rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  background: var(--bg3);
}

.learn-exercise summary,
.learn-model-answer summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0.7rem 0.85rem;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}

.learn-exercise details > :not(summary),
.learn-model-answer > :not(summary),
.learn-feedback > * {
  margin-inline: 0.85rem;
}

.learn-exercise details > :last-child,
.learn-model-answer > :last-child,
.learn-feedback > :last-child {
  margin-bottom: 0.85rem;
}

/* Local progress enhancement */
.learn-progress {
  border-color: var(--border2);
}

.learn-progress__meter,
.learn-progress__row {
  display: grid;
  gap: 0.65rem;
}

.learn-progress progress,
.learn-progress [data-progress-meter],
.learn-progress [data-progress-bar] {
  width: 100%;
  height: 0.8rem;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  color: var(--accent2);
  background: var(--bg3);
  accent-color: var(--accent2);
}

.learn-progress progress::-webkit-progress-bar {
  border-radius: 999px;
  background: var(--bg3);
}

.learn-progress progress::-webkit-progress-value {
  border-radius: 999px;
  background: var(--accent2);
}

.learn-progress progress::-moz-progress-bar {
  border-radius: 999px;
  background: var(--accent2);
}

.learn-progress [data-progress-count],
.learn-progress [data-progress-summary],
.learn-progress__count,
.learn-progress__note,
.learn-progress [data-progress-status] {
  color: var(--text2);
  font-size: 0.85rem;
}

.learn-progress__privacy,
.learn-progress__noscript {
  margin-top: 0.8rem;
  color: var(--text2);
  font-size: 0.8rem;
}

.learn-progress [data-progress-status] {
  min-height: 1.5em;
  margin-top: 0.65rem;
}

.learn-progress [data-progress-toggle],
.learn-progress__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-width: min(100%, 15rem);
  min-height: 44px;
  margin-top: 0.9rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--accent2);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.35;
  cursor: pointer;
}

.learn-progress [data-progress-toggle][hidden] {
  display: none;
}

.learn-progress [data-progress-toggle]:hover,
.learn-progress__button:hover {
  background: var(--bg3);
}

.learn-progress [data-progress-toggle][aria-pressed="true"],
.learn-progress__button[aria-pressed="true"] {
  border-width: 2px;
  background: var(--bg3);
}

.learn-progress [data-progress-toggle][aria-pressed="true"]::before,
.learn-progress__button[aria-pressed="true"]::before {
  content: "\2713";
  color: var(--accent2);
  font-size: 1rem;
  line-height: 1;
}

/* Previous/next lesson links */
.learn-lesson-nav {
  display: grid;
  gap: 0.75rem;
  margin-block: 2rem;
}

.learn-lesson-nav a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text2);
  text-decoration: none;
}

.learn-lesson-nav a:hover {
  border-color: var(--accent2);
  color: var(--text);
  background: var(--bg2);
}

.learn-related__grid,
.learn-card-grid {
  display: grid;
  gap: 0.75rem;
}

.learn-related ul {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.learn-related li {
  max-width: none;
  margin: 0;
}

.learn-related li > span {
  display: block;
  margin: 0.45rem 0.85rem 0;
  color: var(--text2);
  font-size: 0.85rem;
}

.learn-takeaway pre {
  max-width: 100%;
  margin-block: 0.85rem;
  padding: 0.85rem;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  background: var(--bg3);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.learn-related a,
.learn-card {
  display: block;
  min-height: 44px;
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text2);
  text-decoration: none;
}

.learn-related a:hover,
.learn-card:hover {
  border-color: var(--accent2);
  color: var(--text);
}

@media (min-width: 48rem) {
  :where(.learn-page, .learn-shell) {
    padding: 2.5rem 1.5rem 5rem;
  }

  .learn-layout,
  .learn-lesson__layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(15rem, 19rem);
    gap: 2rem;
    align-items: start;
  }

  .learn-course-nav--sticky {
    position: sticky;
    top: 5rem;
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .learn-prompt-makeover__grid,
  .learn-prompt-makeover__steps,
  .learn-prompt-makeover {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .learn-prompt-makeover {
    display: grid;
  }

  .learn-prompt-makeover > .learn-section-heading {
    grid-column: 1 / -1;
  }

  .learn-prompt-makeover__step,
  .learn-prompt-makeover section {
    border-inline-end: 1px solid var(--border);
  }

  .learn-prompt-makeover__step:nth-child(odd),
  .learn-prompt-makeover section:nth-child(odd) {
    border-inline-end: 0;
  }

  .learn-prompt-makeover__step:last-child,
  .learn-prompt-makeover section:last-child {
    grid-column: 1 / -1;
    border-inline-end: 0;
  }

  .learn-lesson-nav,
  .learn-related__grid,
  .learn-card-grid,
  .learn-comparison {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .learn-progress__row {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto !important;
  }

  :where(.learn-page, .learn-shell),
  :where(.learn-page, .learn-shell) *,
  :where(.learn-page, .learn-shell) *::before,
  :where(.learn-page, .learn-shell) *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}