/* elements.dev shared site chrome. Imported by page.css so every page
   gets it. Families that used to ship in @elements/style v1 and left
   the package (brand mark, footer, shell widths, feed rows,
   segmented control, link-more) are absorbed here,
   alongside the app's own shared pieces (kind chips, page hero,
   ElementsBadge). */

/* Per-kind chip color rules — applied wherever a kind label needs
   tinting (ContentItem's kind label, post byline, search palette,
   etc.). Class names follow the pattern `.kind--<key>` so consumers
   pass `kindClass="kind--bug"` and the visible kind tint resolves
   automatically. Hex values live in ./vars.css. */
.kind--discuss   { color: var(--kind-discuss);  }
.kind--show      { color: var(--kind-show);     }
.kind--ask       { color: var(--kind-ask);      }
.kind--announce  { color: var(--kind-announce); }
.kind--course    { color: var(--kind-course);   }
.kind--lesson    { color: var(--kind-lesson);   }
.kind--guide     { color: var(--kind-guide);    }
.kind--video     { color: var(--kind-video);    }
.kind--comment   { color: var(--kind-comment);  }
.kind--user      { color: var(--kind-user);     }
.kind--page      { color: var(--kind-page);     }
.kind--bug       { color: var(--kind-bug);      }
.kind--feature   { color: var(--kind-feature);  }

/* ─── Page hero ────────────────────────────────────────────────────
   h1 + paragraph subtitle, one rule used by every top-level page
   (/feed, /install, /learn, /pricing, /account, ...). Canonical
   top-level h1: 48px desktop, 40px on phones — matches the home
   hero so navigating between pages shows a single page-title scale.
   Page-specific CSS only tweaks margins/width around this. */
.page-hero { margin-bottom: var(--space-6); }

.page-hero-title {
  font-family: var(--font-sans);
  font-weight: var(--weight-bold);
  font-size: 3rem;
  letter-spacing: -0.02em;
  line-height: 1;
  margin: 2rem 0 var(--space-4);
  color: var(--ink);
}

.page-hero-sub {
  font-family: var(--font-sans);
  font-size: var(--text-md);
  color: var(--ink-soft);
  line-height: var(--leading-body);
  margin: 0;
  max-width: 36rem;
}
.page-hero-sub code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--bg-panel);
  padding: 0.0625rem 0.375rem;
  border-radius: var(--radius-xs);
  color: var(--ink);
}

.page-hero-lede {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--ink-soft);
  line-height: 1.6;
  max-width: 34rem;
  margin: 0 0 var(--space-7);
}

@media (max-width: 640px) {
  .page-hero-title {
    font-size: 2.5rem;
    line-height: 1.1;
    margin-top: 1.5rem;
  }
}

/* ─── ElementsBadge — staff-author attribution mark ───────────────
   Lightweight outlined "ELEMENTS" pill rendered next to a byline
   when the author is an Elements staff member. --accent colors lock
   the brand association regardless of context. Sized via em so it
   tracks the surrounding byline scale. Single source of truth —
   restyles live in this rule. */
.elements-pill {
  display: inline-flex;
  align-items: center;
  margin-left: 0.4rem;
  padding: 2px 5px;
  border-radius: 3px;
  color: var(--accent-deep);
  background: var(--accent-soft);
  font-family: var(--font-sans);
  font-size: 0.625rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  white-space: nowrap;
  flex-shrink: 0;
  vertical-align: 1px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── Container widths ─────────────────────────────────────────────
   Named page-column widths the site's shells and footer align to.
   --container-form (the 640px form column) lives in ./vars.css. */
:root {
  --container-marketing: 820px;    /* landing / feed / courses column */
  --container-wide:     1080px;    /* footer content width */
}

/* ─── Brand mark + lockup ──────────────────────────────────────────
   The Elements mark (rounded square + chevron SVG) and the
   mark-plus-wordmark lockup rendered by <Mark> / <Brand>. The mark
   inherits the page accent; sizing comes from explicit width/height
   so the SVG scales crisply. */
.mark {
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
}
.mark svg { width: 100%; height: 100%; display: block; }

/* Pin the mark to the Elements blue regardless of the page accent —
   used inside the brand lockup so the mark reads as the logo, not as
   a themed icon. */
.mark.is-sky { color: var(--elements-blue-500); }

.mark.size-24 { width: 24px; height: 24px; }

/* Lockup — mark + "elements" wordmark, rendered as one link. */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.1875rem;
  font-family: var(--font-sans);
  font-weight: var(--weight-bold);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.025em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  font-size: 15px;
}
.brand > .mark { width: 18px; height: 18px; }

/* ─── Shell (width-bounded page container) ─────────────────────────
   Centers page content at the marketing column width with the
   standard desktop gutter. */
.shell-marketing {
  max-width: var(--container-marketing);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

/* Mobile: tighten the page-content gutter so it aligns with the
   topbar's brand mark instead of sitting deeper into the viewport. */
@media (max-width: 700px) {
  .shell-narrow,
  .shell-prose,
  .shell-marketing,
  .shell-wide {
    padding-left:  1.5rem;
    padding-right: 1.5rem;
  }
}

/* ─── Footer ───────────────────────────────────────────────────────
   The bar spans the full viewport (border + background edge-to-edge);
   the inner row constrains width so content aligns with page shells.

     <footer class='footer'>
       <div class='footer-inner'>
         <div class='left'>…</div>
         <div class='right'>…</div>
       </div>
     </footer>
*/
.footer {
  border-top: 1px solid var(--rule);
  background: var(--bg);
  font-family: var(--font-sans);
  font-size: 0.71875rem;
  color: var(--ink-dim);
}
.footer-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: var(--space-6) var(--space-8);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3-5);
  align-items: center;
}
.footer .left {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  color: var(--ink-soft);
}
.footer .right { display: flex; gap: var(--space-3-5); }
.footer a { color: var(--ink-soft); }
.footer a:hover { color: var(--ink); }

/* ─── Feed ─────────────────────────────────────────────────────────
   HN-style vertical feed. `.feed` is the list wrapper (/home,
   /u/<handle>, /feed, /issues); generic `.item` rows are the issues
   lists' row shape. Defaults are wrapped in :where() so page-level
   row classes (.issues-row, .feed-row) override them freely. */
.feed { margin-top: var(--space-2); }

:where(.feed > .item) {
  display: grid;
  grid-template-columns: 28px 1fr 16px;
  gap: 0.875rem;
  padding: 0.625rem 0;
  align-items: baseline;
  border-bottom: 1px solid var(--rule-soft);
}
:where(.feed > .item:last-child) { border-bottom: none; }

/* Hovering anywhere on a row underlines its title link, so the whole
   row reads as one click target. */
:where(.feed > .item:hover .title a) {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--ink-faint);
  text-underline-offset: 3px;
}

/* ─── Segmented control ────────────────────────────────────────────
   Bordered group of exclusive-choice buttons (platform / arch picker
   in the install block). The active segment gets the accent wash. */
.seg {
  display: inline-flex;
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg);
}

.seg > :where(button, a) {
  font-family: var(--font-sans);
  font-size: var(--text-2xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: var(--weight-bold);
  background: var(--bg);
  color: var(--ink-dim);
  border: none;
  height: auto;
  border-radius: 0;
  padding: var(--space-2) 0.625rem;
  cursor: pointer;
  border-right: 1px solid var(--rule);
  text-decoration: none;
  transition:
    background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}
.seg > :where(button, a):last-child { border-right: none; }
.seg > :where(button, a):hover:not(.is-active) {
  color: var(--ink-soft);
  background: var(--bg-soft);
}
.seg > :where(button, a).is-active,
.seg > :where(button, a)[aria-selected="true"] {
  background: var(--accent-soft);
  color: var(--accent-deep);
}
.seg > :where(button, a):focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: -2px;
}

/* Row of .seg groups (platform + arch). Scrolls horizontally on
   narrow viewports instead of wrapping. */
.seg-row {
  display: flex;
  gap: 0.625rem;
  margin-bottom: var(--space-4);
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.seg-row::-webkit-scrollbar { display: none; }
.seg-row > .seg { flex-shrink: 0; }

@media (max-width: 480px) {
  .seg > :where(button, a) {
    font-size: 0.625rem;
    padding: 0.4375rem 0.5rem;
    letter-spacing: 0.04em;
  }
  .seg-row { gap: 0.5rem; }
}

/* ─── "See all →" link ─────────────────────────────────────────────
   Quiet trailing link under a list (home feed's "More →", issues
   list footer). Dotted underline that firms up on hover. */
.link-more {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--ink-soft);
  /* Kill the base :where(a) underline — the dotted border-bottom below
     is this link's only underline. Without this both stack (solid +
     dotted double underline). */
  text-decoration: none;
  border-bottom: 1px dotted var(--ink-faint);
  padding-bottom: 1px;
  transition: color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}
.link-more:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* ─── Page shells without a local width ────────────────────────────
   These pages size their column here rather than in their own css:
   issues (list/new/saved/trash), post reader (also worn by
   /issues/:id via .post-shell), search, and the settings layout.
   Install, pricing, and purchase share the narrower form column —
   focused single-task pages, not multi-section surfaces. */
.issues-shell,
.post-shell,
.search-shell,
.settings-shell {
  max-width: var(--container-marketing);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

.purchase-shell,
.pricing-shell,
.install-shell {
  max-width: var(--container-form);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

@media (max-width: 700px) {
  .issues-shell,
  .post-shell,
  .search-shell,
  .settings-shell,
  .purchase-shell,
  .pricing-shell,
  .install-shell { padding: 0 var(--space-5); }
}

@media (max-width: 640px) {
  .issues-shell,
  .post-shell,
  .search-shell,
  .settings-shell,
  .purchase-shell,
  .pricing-shell,
  .install-shell { padding: 0 var(--space-4); }
}

/* Content readers claw back gutter on phones — body width is the
   scarce resource on a text page. */
@media (max-width: 480px) {
  .post-shell,
  .search-shell { padding: 0 var(--space-3); }
}

/* ─── Settings / account page title ────────────────────────────────
   The h1 rendered by the settings-page and composer-form layouts
   (`class="account-h1 settings-title"`). Canonical top-level scale:
   48px desktop, 40px on phones. */
.account-h1 {
  font-family: var(--font-sans);
  font-weight: var(--weight-bold);
  font-size: 3rem;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink);
  margin: 2rem 0 var(--space-4);
}

@media (max-width: 640px) {
  .account-h1 {
    font-size: 2.5rem;
    margin-top: 1.5rem;
  }
}

/* ─── Button arrow affordance ──────────────────────────────────────
   `<span class="arrow">→</span>` inside a button stays muted within
   the button's color family and brightens on hover. */
button .arrow, .button .arrow {
  color: currentColor;
  opacity: 0.5;
  transition: opacity var(--duration-fast) var(--ease-out);
}
button:hover .arrow, .button:hover .arrow { opacity: 0.7; }
button.is-primary .arrow, .button.is-primary .arrow {
  color: rgba(255, 255, 255, 0.5);
}

/* ─── Toggle switch ────────────────────────────────────────────────
   The auto-renew switch on /purchase and /account (billing). A
   <button class="toggle"> flipping .is-on; the knob is the ::after.
   Absorbed from the old package — the successor there is the ui
   switch template, which the server hasn't adopted yet. */
.toggle {
  width: 2.375rem;
  height: 1.375rem;
  background: var(--ink-faint);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
  border: none;
  padding: 0;
  transition:
    background-color 200ms var(--ease-out),
    box-shadow 150ms var(--ease-out);
}

.toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 1.125rem;
  height: 1.125rem;
  background: #ffffff;
  border-radius: 50%;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
  transition:
    transform 200ms cubic-bezier(0.4, 0, 0.2, 1),
    width 80ms var(--ease-out);
}

.toggle.is-on { background: var(--accent); }
.toggle.is-on::after { transform: translateX(1rem); }

.toggle:hover:not(:disabled) { background: var(--ink-dim); }
.toggle.is-on:hover:not(:disabled) { background: var(--accent-deep); }

/* Pressed: the knob stretches toward the direction it will travel. */
.toggle:active:not(:disabled)::after { width: 1.375rem; }
.toggle.is-on:active:not(:disabled)::after {
  transform: translateX(0.75rem);
  width: 1.375rem;
}

.toggle:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 2px var(--bg),
    0 0 0 4px var(--accent-deep);
}

.toggle:disabled {
  background: var(--rule);
  cursor: not-allowed;
  opacity: 0.6;
}

.toggle:disabled::after {
  background: var(--bg-soft);
  box-shadow: none;
}

/* ─── Terminal copy chip ───────────────────────────────────────────
   Comfier than the package default (4px vertical, fixed 6.5rem):
   real padding on both axes, width from content with the same
   minimum so the chip doesn't jump when "copy" flips to "✓ copied". */
.terminal > .copy {
  padding: var(--space-2) var(--space-3);
  width: auto;
  min-width: 6.5rem;
}