/* ==========================================================================
   ModexAgent — landing page styles (T3 · Variant A "Centered Stage")

   Consumes ONLY the --mdx-* design tokens defined in extra.css (Teal &
   Ember, per scheme) — every glow/shadow/gradient below is a color-mix()
   derivation from those tokens (the D4 static fallbacks restate palette
   values verbatim for engines without color-mix()).

   This file is registered site-wide via extra_css, so EVERY rule is scoped
   to the landing: either under .mdx-home, or to its ancestors via :has().
   Docs pages are untouched.
   ========================================================================== */

/* --------------------------------------------------------------------------
   De-scope the docs grid: the landing lives inside .md-main__inner (a
   61rem-capped flex row). When it directly contains .mdx-home, flatten it.
   -------------------------------------------------------------------------- */
.md-main__inner:has(> .mdx-home) {
  display: block;
  height: auto;
  margin: 0;
  max-width: none;
}

/* D4 fallback for engines without :has() (iOS < 15.4): an invalid selector
   invalidates the ENTIRE selector list, so extending the rule above with
   ", .md-main__inner.mdx-flat" would drop both selectors there — the class
   variant lives in its own rule. The inline script in overrides/home.html
   adds .mdx-flat only when CSS.supports('selector(:has(*))') is false. */
.md-main__inner.mdx-flat {
  display: block;
  height: auto;
  margin: 0;
  max-width: none;
}

/* --------------------------------------------------------------------------
   Scheme-derived helper tokens (per palette scheme, from --mdx-* only)
   -------------------------------------------------------------------------- */
[data-md-color-scheme="default"] .mdx-home {
  /* DAY — deepened accents on warm paper. D4: every color-mix() token is
     preceded by its static fallback for engines without color-mix()
     (iOS ≤ 16.1, old Android WebView) — see the @supports guard after the
     scheme blocks, which is what actually re-applies these statics there. */
  --mdx-home-brand-ink: #0F766E; /* static: palette teal ≥4.5:1 (extra.css --md-typeset-a-color) */
  --mdx-home-brand-ink: color-mix(in srgb, var(--mdx-brand) 72%, var(--mdx-text)); /* ≥4.5:1 small-text teal */
  --mdx-home-glow: rgba(13, 148, 136, .12); /* static: --mdx-brand @ 12% */
  --mdx-home-glow: color-mix(in srgb, var(--mdx-brand) 12%, transparent);
  --mdx-home-shadow: 0 1.125rem 3.125rem rgba(26, 43, 38, .1); /* static: --mdx-text @ 10% */
  --mdx-home-shadow: 0 1.125rem 3.125rem color-mix(in srgb, var(--mdx-text) 10%, transparent);
  --mdx-home-btn-bg: linear-gradient(120deg, var(--mdx-brand-bright), var(--mdx-brand)); /* static: token-to-token gradient */
  --mdx-home-btn-bg: linear-gradient(120deg, var(--mdx-brand-bright), color-mix(in srgb, var(--mdx-brand-bright) 55%, var(--mdx-brand)));
  --mdx-home-btn-fg: var(--mdx-text);
  --mdx-home-stage: radial-gradient(closest-side, rgba(13, 148, 136, .07), transparent 72%); /* static: --mdx-brand @ 7% */
  --mdx-home-stage: radial-gradient(closest-side, color-mix(in srgb, var(--mdx-brand) 7%, transparent), transparent 72%);
}

[data-md-color-scheme="slate"] .mdx-home {
  /* NIGHT — glowing teal on warm graphite (D4 static fallbacks as in DAY) */
  --mdx-home-brand-ink: var(--mdx-brand);
  --mdx-home-glow: rgba(45, 212, 168, .18); /* static: --mdx-brand @ 18% */
  --mdx-home-glow: color-mix(in srgb, var(--mdx-brand) 18%, transparent);
  --mdx-home-shadow: 0 1.125rem 3.125rem rgba(14, 21, 18, .65); /* static: --mdx-bg @ 65% */
  --mdx-home-shadow: 0 1.125rem 3.125rem color-mix(in srgb, var(--mdx-bg) 65%, transparent);
  --mdx-home-btn-bg: linear-gradient(120deg, var(--mdx-brand), var(--mdx-brand-bright));
  --mdx-home-btn-fg: var(--mdx-bg);
  --mdx-home-stage: radial-gradient(closest-side, rgba(45, 212, 168, .1), transparent 72%); /* static: --mdx-brand @ 10% */
  --mdx-home-stage: radial-gradient(closest-side, color-mix(in srgb, var(--mdx-brand) 10%, transparent), transparent 72%);
}

/* D4: custom-property values are opaque token streams, so on engines without
   color-mix() the duplicated declarations above do NOT fall back on their own
   — the color-mix() line still wins the custom-property cascade and the
   failure surfaces at var() substitution time (background/box-shadow become
   unset → the primary CTA renders as bare text). This guard re-applies the
   static values on exactly those engines; modern engines skip it, so the
   color-mix() lines above stay the rendered values (no visual change). */
@supports not (color: color-mix(in srgb, red, red)) {
  [data-md-color-scheme="default"] .mdx-home {
    --mdx-home-brand-ink: #0F766E;
    --mdx-home-glow: rgba(13, 148, 136, .12);
    --mdx-home-shadow: 0 1.125rem 3.125rem rgba(26, 43, 38, .1);
    --mdx-home-btn-bg: linear-gradient(120deg, var(--mdx-brand-bright), var(--mdx-brand));
    --mdx-home-stage: radial-gradient(closest-side, rgba(13, 148, 136, .07), transparent 72%);
  }

  [data-md-color-scheme="slate"] .mdx-home {
    --mdx-home-glow: rgba(45, 212, 168, .18);
    --mdx-home-shadow: 0 1.125rem 3.125rem rgba(14, 21, 18, .65);
    --mdx-home-stage: radial-gradient(closest-side, rgba(45, 212, 168, .1), transparent 72%);
  }
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */
.mdx-home {
  overflow-x: clip;
  color: var(--mdx-text);
  -webkit-font-smoothing: antialiased;
}

.mdx-home h1,
.mdx-home h2,
.mdx-home h3 {
  font-family: var(--mdx-font-display);
  margin: 0;
}

.mdx-home p {
  margin: 0;
}

.mdx-home section[id] {
  scroll-margin-top: 5rem;
}

.mdx-accent {
  color: var(--mdx-brand);
}

/* --------------------------------------------------------------------------
   Hero — full-viewport-minus-chrome centered stage.
   Material chrome = 2.4rem header + 2.4rem nav tabs (tabs hide <76.234375em).
   -------------------------------------------------------------------------- */
.mdx-hero {
  position: relative;
  display: flex;
  min-height: calc(100vh - 4.8rem);
  min-height: calc(100svh - 4.8rem);
  overflow: hidden;
}

@media (max-width: 76.234375em) {
  .mdx-hero {
    min-height: calc(100vh - 2.4rem);
    min-height: calc(100svh - 2.4rem);
  }
}

/* T4 replaces this interim stage glow with the particle engine */
.mdx-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--mdx-home-stage);
  pointer-events: none;
}

.mdx-hero #pcv {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.mdx-shape-label {
  position: absolute;
  top: clamp(3.5rem, 12vh, 7rem);
  top: clamp(3.5rem, 12svh, 7rem);
  right: 5vw;
  z-index: 2;
  font-family: var(--md-code-font-family);
  font-size: .72rem;
  letter-spacing: .28em;
  color: var(--mdx-text-dim);
  padding: .375rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--mdx-border);
  background: var(--mdx-surface);
  transition: opacity .5s ease-out;
}

.mdx-hero__inner {
  position: relative;
  z-index: 2;
  margin: auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  max-width: 56rem;
  padding: clamp(9rem, 38vh, 24rem) 5vw 4rem;
  padding: clamp(9rem, 38svh, 24rem) 5vw 4rem;
}

.mdx-kicker {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .375rem .9375rem;
  border-radius: 999px;
  border: 1px solid var(--mdx-border);
  background: var(--mdx-surface);
  font-size: .78rem;
  color: var(--mdx-text-dim);
  letter-spacing: .06em;
}

.mdx-kicker__dot {
  width: .4375rem;
  height: .4375rem;
  border-radius: 50%;
  background: var(--mdx-brand);
  box-shadow: 0 0 .625rem var(--mdx-brand);
}

.mdx-hero__title {
  font-size: clamp(2rem, 4.4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -.01em;
}

.mdx-hero__sub {
  color: var(--mdx-text-dim);
  font-size: clamp(.95rem, 1.4vw, 1.08rem);
  line-height: 1.85;
  max-width: 37.5rem;
}

/* ---------- CTAs + badges ---------- */
.mdx-cta-row {
  display: flex;
  gap: .875rem;
  flex-wrap: wrap;
  justify-content: center;
}

.mdx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 2.75rem; /* 44px touch target */
  padding: .8125rem 1.75rem;
  border-radius: .75rem;
  border: 1px solid transparent;
  font-size: .95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform .25s ease-out, box-shadow .25s ease-out,
              border-color .25s ease-out, background-color .25s ease-out,
              color .25s ease-out;
}

.mdx-btn svg {
  width: 1rem;
  height: 1rem;
  flex: none;
}

.mdx-btn--primary {
  color: var(--mdx-home-btn-fg);
  background: var(--mdx-home-btn-bg);
  box-shadow: 0 .5rem 1.75rem var(--mdx-home-glow);
}

/* D6: hover-only visual states live behind @media (hover: hover) so
   touch devices never stick them after a tap. Desktop (hover-capable)
   matches the query, so the rendered hover states are unchanged. */
@media (hover: hover) {
  .mdx-btn--primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 .8rem 2.25rem var(--mdx-home-glow);
  }
}

.mdx-btn--ghost {
  color: var(--mdx-text);
  border-color: var(--mdx-border);
  background: var(--mdx-surface);
}

@media (hover: hover) {
  .mdx-btn--ghost:hover {
    border-color: var(--mdx-brand);
    transform: translateY(-3px);
    box-shadow: var(--mdx-home-shadow);
  }
}

.mdx-btn:focus-visible {
  outline: 2px solid var(--mdx-brand);
  outline-offset: 3px;
}

.mdx-badges {
  display: flex;
  gap: .625rem;
  flex-wrap: wrap;
  justify-content: center;
}

.mdx-badge {
  font-family: var(--md-code-font-family);
  font-size: .72rem;
  padding: .375rem .8125rem;
  border-radius: .5rem;
  background: var(--mdx-surface);
  border: 1px solid var(--mdx-border);
  color: var(--mdx-text-dim);
}

.mdx-badge b {
  color: var(--mdx-ember);
  font-weight: 600;
}

.mdx-scroll-hint {
  position: absolute;
  bottom: 1.375rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--mdx-text-dim);
  font-family: var(--md-code-font-family);
  font-size: .64rem;
  letter-spacing: .3em;
  animation: mdx-scroll-drift 2.4s ease-in-out infinite;
}

@keyframes mdx-scroll-drift {
  0%, 100% { transform: translate(-50%, 0); }
  50%      { transform: translate(-50%, .375rem); }
}

/* --------------------------------------------------------------------------
   Sections — centered Variant-A rhythm
   -------------------------------------------------------------------------- */
.mdx-section {
  padding: clamp(3.5rem, 8vw, 6rem) 5vw;
  max-width: 76.25rem;
  margin: 0 auto;
}

.mdx-sec-head {
  text-align: center;
  margin-bottom: 3.25rem;
}

.mdx-sec-tag {
  font-family: var(--md-code-font-family);
  font-size: .74rem;
  letter-spacing: .3em;
  color: var(--mdx-home-brand-ink);
  text-transform: uppercase;
}

.mdx-sec-title {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 700;
  margin-top: .75rem;
}

.mdx-sec-desc {
  color: var(--mdx-text-dim);
  margin: .875rem auto 0;
  max-width: 38.75rem;
  line-height: 1.85;
  font-size: .95rem;
}

.mdx-section__cta {
  margin-top: 1.75rem;
  text-align: center;
}

/* --------------------------------------------------------------------------
   Feature cards
   -------------------------------------------------------------------------- */
.mdx-feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(16.875rem, 100%), 1fr));
  gap: 1.125rem;
}

.mdx-card {
  background: var(--mdx-surface);
  border: 1px solid var(--mdx-border);
  border-radius: 1.125rem;
  padding: 1.625rem;
  transition: transform .3s ease-out, border-color .3s ease-out,
              box-shadow .3s ease-out;
}

@media (hover: hover) {
  .mdx-card:hover {
    transform: translateY(-5px);
    border-color: var(--mdx-brand);
    box-shadow: var(--mdx-home-shadow), 0 0 1.5rem var(--mdx-home-glow);
  }
}

.mdx-card__icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: .75rem;
  display: grid;
  place-items: center;
  background: var(--mdx-surface-2);
  border: 1px solid var(--mdx-border);
  color: var(--mdx-brand);
  margin-bottom: 1rem;
}

.mdx-card__icon svg {
  width: 1.3125rem;
  height: 1.3125rem;
}

.mdx-card__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: .5625rem;
}

.mdx-card__desc {
  color: var(--mdx-text-dim);
  font-size: .85rem;
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   Architecture strip — mono chips flowing downward
   -------------------------------------------------------------------------- */
.mdx-arch-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
}

.mdx-arch-row {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.mdx-arch-chip {
  font-family: var(--md-code-font-family);
  font-size: .74rem;
  padding: .625rem 1rem;
  border-radius: .6875rem;
  background: var(--mdx-surface);
  border: 1px solid var(--mdx-border);
  color: var(--mdx-text);
}

.mdx-arch-chip--hot {
  border-color: var(--mdx-brand);
  color: var(--mdx-home-brand-ink);
}

.mdx-arch-arrow {
  width: 1rem;
  height: 1rem;
  color: var(--mdx-text-dim);
}

/* --------------------------------------------------------------------------
   Get Started steps (installer-first)
   -------------------------------------------------------------------------- */
.mdx-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(16.25rem, 100%), 1fr));
  gap: 1.125rem;
}

.mdx-step {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: 1rem;
  background: var(--mdx-surface);
  border: 1px solid var(--mdx-border);
  transition: transform .3s ease-out, border-color .3s ease-out,
              box-shadow .3s ease-out;
}

@media (hover: hover) {
  .mdx-step:hover {
    border-color: var(--mdx-brand);
    transform: translateY(-4px);
    box-shadow: var(--mdx-home-shadow);
  }
}

.mdx-step__num {
  flex: none;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: .625rem;
  display: grid;
  place-items: center;
  font-family: var(--md-code-font-family);
  font-weight: 600;
  font-size: .85rem;
  color: var(--mdx-home-btn-fg);
  background: var(--mdx-home-btn-bg);
}

.mdx-step__title {
  font-size: .93rem;
  margin-bottom: .3125rem;
}

.mdx-step__desc {
  color: var(--mdx-text-dim);
  font-size: .83rem;
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   Extras chips
   -------------------------------------------------------------------------- */
.mdx-chips {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.mdx-chip {
  font-family: var(--md-code-font-family);
  font-size: .72rem;
  padding: .4375rem .875rem;
  border-radius: 999px;
  background: var(--mdx-surface);
  border: 1px solid var(--mdx-border);
  color: var(--mdx-text-dim);
}

/* --------------------------------------------------------------------------
   Final CTA band (sits directly above the Material footer)
   -------------------------------------------------------------------------- */
.mdx-final {
  text-align: center;
  padding: clamp(4rem, 10vw, 6.875rem) 5vw;
  background: var(--mdx-surface-2);
  border-top: 1px solid var(--mdx-border);
}

.mdx-final__title {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 700;
}

.mdx-final__sub {
  color: var(--mdx-text-dim);
  margin: 1rem auto 1.875rem;
  max-width: 32.5rem;
  line-height: 1.85;
}

/* --------------------------------------------------------------------------
   Scroll reveal — entrance transition with 50ms sibling stagger.
   Without JS/IO the inline script force-adds .in; with reduced motion the
   guard below shows everything instantly.
   -------------------------------------------------------------------------- */
.mdx-home .reveal {
  opacity: 0;
  transform: translateY(1.875rem);
  transition: opacity .7s cubic-bezier(.2, .7, .2, 1),
              transform .7s cubic-bezier(.2, .7, .2, 1);
}

.mdx-home .reveal.in {
  opacity: 1;
  transform: none;
}

.mdx-feat-grid .reveal:nth-child(2),
.mdx-steps .reveal:nth-child(2) { transition-delay: .05s; }

.mdx-feat-grid .reveal:nth-child(3),
.mdx-steps .reveal:nth-child(3) { transition-delay: .1s; }

.mdx-feat-grid .reveal:nth-child(4) { transition-delay: .15s; }

.mdx-feat-grid .reveal:nth-child(5) { transition-delay: .2s; }

.mdx-feat-grid .reveal:nth-child(6) { transition-delay: .25s; }

/* --------------------------------------------------------------------------
   Responsive — 375px: stacked CTAs (full-width, ≥44px), centered shape
   label, no horizontal scroll (grids already collapse to one column).
   -------------------------------------------------------------------------- */
@media (max-width: 35em) {
  .mdx-cta-row {
    flex-direction: column;
    width: 100%;
  }

  .mdx-cta-row .mdx-btn {
    width: 100%;
  }

  /* 17svh, not the spec-doc 24svh: Material's html{font-size:125%} inflates
     the mobile stack (~682px of content at 375px), so the top padding must
     stay within ~[101px,123px] at 667px-tall phones to keep the primary CTA
     above the fold and the kicker clear of the (repositioned) shape label. */
  .mdx-hero__inner {
    padding-top: clamp(5.5rem, 17vh, 12rem);
    padding-top: clamp(5.5rem, 17svh, 12rem);
    padding-bottom: 3rem;
  }

  /* Readability scrim — veils the particle stage behind the hero copy.
     Iteration 3 of the gradient stops (WCAG AA, task-3): transparent pocket
     at 72% height, behind the CTA/badges chips (which carry their own
     opaque surface backgrounds); the tightened 12→42% ramp keeps the day
     accent span (teal-on-surface caps at 3.58:1) above 3:1 everywhere.
     Painted below the copy (z-index: -1, inside the inner's stacking
     context) and above the canvas; never intercepts pointers.
     Scoped to ≤35em so desktop keeps the unobstructed particle stage
     (user directive 2026-08-28): the scrim only compensates for the
     compressed mobile hero padding, where text sits over the particles. */
  .mdx-hero__inner::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: radial-gradient(ellipse at 50% 72%, transparent 12%, var(--mdx-surface) 42%);
    pointer-events: none;
  }

  .mdx-shape-label {
    right: 50%;
    transform: translateX(50%);
    /* 3.25rem, not 4.5rem: the compressed hero padding pulls the kicker
       up to ~161px; the label pill (36px) must clear it at 375px phones. */
    top: 3.25rem;
    letter-spacing: .2em;
    /* D8: long labels wrap instead of overflowing the pill (nowrap could
       clip past the 375px viewport edge); centered under translateX(50%). */
    white-space: normal;
    max-width: 90vw;
    text-align: center;
  }
}

/* --------------------------------------------------------------------------
   Reduced motion — every animation/transition above is neutralized here;
   reveals render instantly visible.
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .mdx-home *,
  .mdx-home *::before,
  .mdx-home *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .mdx-home .reveal {
    opacity: 1;
    transform: none;
  }
}