/* ---------------------------------------------------------------------------
   Reusable components: buttons, cards, callouts, steps, the contributor wall.
   --------------------------------------------------------------------------- */

/* --- Buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-3) var(--s-5);
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text);
  font-size: var(--fs-base);
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  text-decoration: none;
}

.btn:hover {
  background: var(--c-surface-2);
  text-decoration: none;
  color: var(--c-text);
}

.btn--primary {
  background: var(--c-accent);
  border-color: var(--c-accent-strong);
  color: #1f2328;
}

.btn--primary:hover {
  background: var(--c-accent-strong);
  color: #fff;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-bottom: var(--s-5);
}

/* --- Theme toggle --- */

.theme-toggle {
  background: none;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  color: var(--c-text-muted);
  cursor: pointer;
  font-size: var(--fs-base);
  line-height: 1;
  padding: var(--s-2) var(--s-3);
  transition: background var(--transition);
}

.theme-toggle:hover {
  background: var(--c-surface);
  color: var(--c-text);
}

/* --- Hero --- */

.hero {
  text-align: center;
  padding: var(--s-7) 0 var(--s-6);
}

.hero h1 {
  margin-bottom: var(--s-3);
}

.hero__lead {
  font-size: var(--fs-lg);
  color: var(--c-text-muted);
  max-width: 60ch;
  margin: 0 auto var(--s-5);
}

.hero .btn-row {
  justify-content: center;
}

/* --- Cards --- */

.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--s-5);
}

.card h3 {
  margin-top: 0;
  font-size: var(--fs-lg);
}

.card p:last-child {
  margin-bottom: 0;
}

.card__icon {
  font-size: 1.75rem;
  line-height: 1;
  display: block;
  margin-bottom: var(--s-3);
}

/* --- Callouts --- */

.callout {
  border-left: 4px solid var(--c-border);
  background: var(--c-surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: var(--s-4);
  margin: 0 0 var(--s-5);
}

.callout__title {
  font-weight: 600;
  margin-bottom: var(--s-2);
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout--tip {
  border-left-color: var(--c-success);
  background: var(--c-success-bg);
  color: var(--c-text);
}

.callout--warn {
  border-left-color: var(--c-warning);
  background: var(--c-warning-bg);
  color: var(--c-text);
}

.callout--stop {
  border-left-color: var(--c-danger);
  background: var(--c-danger-bg);
  color: var(--c-text);
}

/* --- Numbered steps --- */

.steps {
  list-style: none;
  padding: 0;
  counter-reset: step;
}

.steps > li {
  counter-increment: step;
  position: relative;
  padding-left: var(--s-7);
  padding-bottom: var(--s-5);
  border-left: 2px solid var(--c-border);
  margin-left: 15px;
  margin-bottom: 0;
}

.steps > li:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.steps > li::before {
  content: counter(step);
  position: absolute;
  left: -16px;
  top: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--c-accent);
  color: #1f2328;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: var(--fs-sm);
}

.steps h3 {
  margin-top: 0;
  margin-bottom: var(--s-2);
  font-size: var(--fs-lg);
}

/* --- Copy-to-clipboard on code blocks --- */

.code-wrap {
  position: relative;
}

.copy-btn {
  position: absolute;
  top: var(--s-2);
  right: var(--s-2);
  padding: var(--s-1) var(--s-2);
  font-size: 0.75rem;
  font-family: var(--font-sans);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  color: var(--c-text-muted);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition);
}

.code-wrap:hover .copy-btn,
.copy-btn:focus-visible {
  opacity: 1;
}

.copy-btn--done {
  color: var(--c-success);
  border-color: var(--c-success);
  opacity: 1;
}

/* --- Checklist --- */

.checklist {
  list-style: none;
  padding: 0;
}

.checklist li {
  display: flex;
  gap: var(--s-3);
  align-items: flex-start;
  padding: var(--s-3);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  margin-bottom: var(--s-2);
  background: var(--c-surface);
}

.checklist input[type="checkbox"] {
  margin-top: 0.3em;
  width: 1.1em;
  height: 1.1em;
  flex-shrink: 0;
  accent-color: var(--c-accent-strong);
  cursor: pointer;
}

.checklist label {
  cursor: pointer;
}

/* --- Contributor wall --- */

.wall-controls {
  display: flex;
  gap: var(--s-3);
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: var(--s-5);
}

.wall-search {
  flex: 1 1 220px;
  padding: var(--s-3);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-bg);
  color: var(--c-text);
  font-family: inherit;
  font-size: var(--fs-base);
}

.wall-count {
  color: var(--c-text-muted);
  font-size: var(--fs-sm);
  white-space: nowrap;
}

.wall {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  list-style: none;
  padding: 0;
  margin: 0;
}

.wall li {
  margin: 0;
}

.contributor-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--s-4);
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  transition: border-color var(--transition), transform var(--transition);
}

.contributor-card:hover {
  border-color: var(--c-accent);
  transform: translateY(-2px);
}

.contributor-card__head {
  display: flex;
  align-items: center;
  gap: var(--s-3);
}

.contributor-card__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--c-surface-2);
  flex-shrink: 0;
}

.contributor-card__name {
  font-weight: 600;
  margin: 0;
  font-size: var(--fs-base);
  line-height: 1.3;
}

.contributor-card__handle {
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
  font-family: var(--font-mono);
}

.contributor-card__quote {
  font-size: var(--fs-sm);
  color: var(--c-text-muted);
  margin: 0;
  font-style: italic;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-1);
  margin-top: auto;
  padding-top: var(--s-2);
}

.tag {
  font-size: 0.75rem;
  padding: 0.15em 0.6em;
  border-radius: 999px;
  background: var(--c-surface-2);
  color: var(--c-text-muted);
  border: 1px solid var(--c-border);
}

.wall-empty {
  text-align: center;
  padding: var(--s-7);
  color: var(--c-text-muted);
  border: 2px dashed var(--c-border);
  border-radius: var(--radius-lg);
}

/* --- Misc --- */

.lead {
  font-size: var(--fs-lg);
  color: var(--c-text-muted);
}

.muted {
  color: var(--c-text-muted);
}

.center {
  text-align: center;
}

/* ---------------------------------------------------------------------------
   Glossary
   Shares .wall-controls and .wall-search with the contributor wall, so the two
   search boxes stay visually identical.
   --------------------------------------------------------------------------- */

.glossary {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--s-3);
}

.glossary-entry {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: var(--s-4);
  background: var(--c-surface);
}

.glossary-entry__term {
  margin: 0 0 var(--s-1);
  font-size: 1.05rem;
}

.glossary-entry__short {
  margin: 0;
  font-weight: 600;
}

.glossary-entry__full {
  margin: var(--s-2) 0 0;
  color: var(--c-text-muted);
}

/* ---------------------------------------------------------------------------
   FAQ
   Built on <details>/<summary> rather than a custom widget, so keyboard and
   screen-reader behaviour comes from the browser instead of from us.
   --------------------------------------------------------------------------- */

.faq-item {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: var(--s-3) var(--s-4);
  margin-bottom: var(--s-3);
  background: var(--c-surface);
}

.faq-item > summary {
  cursor: pointer;
  font-weight: 600;
  padding: var(--s-1) 0;
}

.faq-item > summary:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: var(--radius);
}

.faq-item[open] > summary {
  margin-bottom: var(--s-2);
}

.faq-item > p {
  margin: 0 0 var(--s-2);
  color: var(--c-text-muted);
}