/* AR Guide — standalone explainer page (shared tokens with main site) */

html:has(.ar-guide-page),
body.ar-guide-page {
  height: 100%;
  overflow: hidden;
}

.ar-guide-scroll {
  height: 100vh;
  height: 100dvh;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

body.has-preview-banner.ar-guide-page .ar-guide-scroll {
  height: calc(100vh - 30px);
  height: calc(100dvh - 30px);
  margin-top: 30px;
}

.ar-guide-page .brand-mark .index span {
  color: var(--accent);
}

/* Main scroll region — inset from fixed chrome */
.ar-guide-main {
  position: relative;
  z-index: 10;
  min-height: 100vh;
  padding:
    calc(220px + env(safe-area-inset-top, 0px))
    max(36px, env(safe-area-inset-right, 0px))
    calc(88px + env(safe-area-inset-bottom, 0px))
    max(36px, env(safe-area-inset-left, 0px));
}

.ar-guide-intro {
  margin-bottom: 28px;
  max-width: 62ch;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.ar-guide-intro-eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}

.ar-guide-intro-title {
  margin: 0 0 12px;
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.ar-guide-intro-lede {
  margin: 0;
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(16px, 2.2vw, 19px);
  line-height: 1.45;
  color: var(--muted);
}

/* Accordion stack */
.ar-guide-sections {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ar-guide-section {
  --ar-panel-bg: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  background: var(--ar-panel-bg);
  box-shadow: inset 0 0 0 1px var(--panel-inset), var(--panel-lift);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.ar-guide-section.is-open {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--panel-border));
}

.ar-guide-trigger {
  appearance: none;
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border: 0;
  background: transparent;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  font: inherit;
}

.ar-guide-trigger:hover {
  color: var(--accent);
}

.ar-guide-trigger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.ar-guide-num {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--accent);
  min-width: 1.6em;
}

.ar-guide-trigger-text {
  min-width: 0;
}

.ar-guide-trigger-title {
  display: block;
  font-family: var(--sans);
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.25;
}

.ar-guide-trigger-lede {
  display: block;
  margin-top: 4px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  line-height: 1.35;
  color: var(--muted);
}

.ar-guide-chevron {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  position: relative;
  opacity: 0.7;
  transition: transform 0.28s ease, opacity 0.2s ease;
}

.ar-guide-chevron::before,
.ar-guide-chevron::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 8px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.28s ease;
}

.ar-guide-chevron::before {
  left: 2px;
  transform: translateY(-50%) rotate(45deg);
  transform-origin: left center;
}

.ar-guide-chevron::after {
  right: 2px;
  transform: translateY(-50%) rotate(-45deg);
  transform-origin: right center;
}

.ar-guide-section.is-open .ar-guide-chevron {
  transform: rotate(180deg);
  opacity: 1;
}

.ar-guide-panel-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.38s cubic-bezier(0.22, 1, 0.36, 1);
}

.ar-guide-section.is-open .ar-guide-panel-wrap {
  grid-template-rows: 1fr;
}

.ar-guide-panel {
  overflow: hidden;
  min-height: 0;
}

/* After open animation: let panel use natural height so scroll includes content below */
.ar-guide-section.is-open.is-settled .ar-guide-panel-wrap {
  grid-template-rows: auto;
}

.ar-guide-section.is-open.is-settled .ar-guide-panel {
  overflow: visible;
  min-height: auto;
}

.ar-guide-section.is-open.is-settled {
  overflow: visible;
}

.ar-guide-panel-inner {
  padding: 0 18px 20px;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.28s ease 0.04s, transform 0.32s cubic-bezier(0.22, 1, 0.36, 1) 0.04s;
}

.ar-guide-section.is-open .ar-guide-panel-inner {
  opacity: 1;
  transform: translateY(0);
}

.ar-guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 42%);
  gap: 22px;
  align-items: start;
}

.ar-guide-layout--copy-only {
  grid-template-columns: minmax(0, 1fr);
  width: 100%;
}

.ar-guide-layout--copy-only .ar-guide-copy {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.ar-guide-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* Subsection with inline icon (section 2) */
.ar-guide-block--with-icon {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px 18px;
  align-items: start;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--rule);
}

.ar-guide-block--with-icon:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.ar-guide-block-text {
  min-width: 0;
}

.ar-guide-block-icon {
  margin: 0;
  flex-shrink: 0;
  width: clamp(72px, 14vw, 108px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding: 6px;
  border-radius: 8px;
  background: var(--tile);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.55),
    0 6px 18px -10px rgba(0, 0, 0, 0.35);
}

.ar-guide-block-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.ar-guide-block-icon--illustration {
  width: clamp(96px, 20vw, 148px);
  padding: 4px;
  background: #fff;
}

.ar-guide-block-heading {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.ar-guide-block-body {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink);
}

.ar-guide-list {
  margin: 0;
  padding-left: 1.1em;
  font-size: 14px;
  line-height: 1.55;
}

.ar-guide-list li + li {
  margin-top: 6px;
}

/* Platform comparison table */
.ar-guide-compare {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ar-guide-compare-row {
  padding: 12px 14px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: color-mix(in srgb, var(--bg) 40%, transparent);
}

.ar-guide-compare-row.is-highlight {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--rule));
  background: var(--accent-wash);
}

.ar-guide-compare-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.ar-guide-compare-note {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

.ar-guide-compare-pros,
.ar-guide-compare-cons {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  line-height: 1.45;
}

.ar-guide-compare-pros li::before {
  content: "+ ";
  color: var(--accent);
}

.ar-guide-compare-cons li::before {
  content: "− ";
  color: var(--muted);
}

/* Do / don't lists */
.ar-guide-do-dont {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.ar-guide-do-dont-col h4 {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.ar-guide-do-dont-col.do h4 {
  color: var(--accent);
}

.ar-guide-do-dont-col.dont h4 {
  color: var(--muted);
}

.ar-guide-do-dont-col ul {
  margin: 0;
  padding-left: 1em;
  font-size: 13px;
  line-height: 1.45;
}

/* Media frames */
.ar-guide-media {
  position: relative;
}

.ar-guide-media-frame {
  --bezel: 10px;
  background: var(--tile);
  color: var(--tile-ink);
  border-radius: 18px;
  padding: var(--bezel);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.65),
    0 18px 48px -24px rgba(0, 0, 0, 0.55);
  overflow: hidden;
}

.ar-guide-media-frame.is-portrait-aspect {
  aspect-ratio: 9 / 16;
  max-width: min(280px, 100%);
  margin-inline: auto;
}

.ar-guide-media-frame.is-square-aspect {
  aspect-ratio: 1 / 1;
  max-width: min(340px, 100%);
  margin-inline: auto;
  background: #fff;
  padding: 12px;
  display: grid;
  place-items: center;
}

.ar-guide-media-frame.is-square-aspect img {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
  background: transparent;
}

.ar-guide-media--diagram {
  display: block;
}

.ar-guide-media--diagram .ar-guide-media-caption {
  text-align: center;
}

@media (min-width: 901px) {
  .ar-guide-media--diagram .ar-guide-media-frame.is-square-aspect {
    max-width: 100%;
  }
}

.ar-guide-media--playlist {
  display: block;
}

.ar-guide-media--playlist .ar-guide-media-caption {
  text-align: center;
}

.ar-guide-playlist,
.ar-guide-playlist video {
  width: 100%;
  height: 100%;
}

.ar-guide-playlist video {
  display: block;
  object-fit: cover;
  border-radius: 10px;
  background: #111;
}

@media (min-width: 901px) {
  .ar-guide-layout .ar-guide-media--playlist {
    width: 100%;
    min-width: 0;
  }

  .ar-guide-media--playlist .ar-guide-media-frame.is-portrait-aspect {
    max-width: 100%;
    width: 100%;
    margin-inline: 0;
  }
}

.ar-guide-media-frame.is-desktop-aspect {
  aspect-ratio: 16 / 9;
}

.ar-guide-media-frame.is-mobile-aspect {
  aspect-ratio: 9 / 16;
  max-width: min(280px, 100%);
  margin-inline: auto;
}

.ar-guide-media-frame img,
.ar-guide-media-frame video {
  display: block;
  width: 100%;
  border-radius: 10px;
}

.ar-guide-media-frame img {
  height: 100%;
  object-fit: cover;
  background: #111;
}

.ar-guide-media-frame video {
  height: 100%;
  object-fit: cover;
  background: #111;
}

.ar-guide-media-caption {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
}

.ar-guide-media-desktop {
  display: block;
}

.ar-guide-media-mobile {
  display: none;
}

.ar-guide-page .foot {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  padding: 22px 36px 26px;
  pointer-events: none;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.ar-guide-page .foot > * {
  pointer-events: auto;
}

.ar-guide-page .foot .left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.ar-guide-page .foot .copy {
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: none;
  color: var(--muted);
  text-align: right;
}

.ar-guide-page .foot .hint {
  justify-self: center;
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--muted);
  text-align: center;
  padding: 10px 16px;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  background: var(--panel-bg);
  box-shadow:
    inset 0 0 0 1px var(--panel-inset),
    var(--panel-lift);
  white-space: nowrap;
}

.ar-guide-page .foot .right {
  justify-content: flex-end;
  display: flex;
  gap: 16px;
}

/* Desktop: clear brand column; center a wider content stack in remaining space */
@media (min-width: 901px) {
  .ar-guide-page {
    --ar-gutter: 36px;
    --ar-brand-w: min(520px, calc(100vw - 72px));
    --ar-menu-w: 48px;
    --ar-content-gap: 36px;
    --ar-content-inset: 0px;
    --ar-col-max: min(960px, calc(100vw - 2 * var(--ar-gutter)));
  }

  .ar-guide-main {
    max-width: none;
    margin: 0;
    padding-top: calc(340px + env(safe-area-inset-top, 0px));
    padding-left: max(var(--ar-gutter), env(safe-area-inset-left, 0px));
    padding-right: max(var(--ar-gutter), env(safe-area-inset-right, 0px));
    padding-bottom: calc(88px + env(safe-area-inset-bottom, 0px));
  }

  body.has-preview-banner .ar-guide-main {
    padding-top: calc(340px + 30px + env(safe-area-inset-top, 0px));
  }

  .ar-guide-intro,
  .ar-guide-sections {
    width: 100%;
    max-width: var(--ar-col-max);
    margin-inline: auto;
  }

  /* Sections 2 & 3: illustration blocks use the same side-column scale as section 4 */
  .ar-guide-block--with-icon:has(.ar-guide-block-icon--illustration) {
    width: 100%;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 42%);
    gap: 22px;
    align-items: start;
  }

  .ar-guide-block--with-icon:has(.ar-guide-block-icon--illustration) .ar-guide-block-icon--illustration {
    width: 100%;
    max-width: 100%;
    justify-self: stretch;
    margin-inline: 0;
    aspect-ratio: auto;
    padding: 12px;
    border-radius: 18px;
    box-shadow:
      inset 0 0 0 1px rgba(255, 255, 255, 0.65),
      0 18px 48px -24px rgba(0, 0, 0, 0.55);
  }

  .ar-guide-block--with-icon:has(.ar-guide-block-icon--illustration) .ar-guide-block-icon--illustration img {
    width: 100%;
    height: auto;
    object-fit: contain;
  }
}

@media (min-width: 1280px) {
  .ar-guide-page {
    --ar-content-gap: 36px;
    --ar-content-inset: 100px;
    --ar-col-max: min(960px, calc(100vw - var(--ar-brand-w) - var(--ar-menu-w) - 4 * var(--ar-gutter) - var(--ar-content-inset)));
  }

  .ar-guide-main {
    padding-top: calc(var(--ar-gutter) + env(safe-area-inset-top, 0px));
    padding-left: calc(var(--ar-gutter) + var(--ar-brand-w) + var(--ar-content-gap) + var(--ar-content-inset));
    padding-right: calc(var(--ar-gutter) + var(--ar-menu-w) + var(--ar-content-gap));
  }

  body.has-preview-banner .ar-guide-main {
    padding-top: calc(var(--ar-gutter) + 30px + env(safe-area-inset-top, 0px));
  }

  .ar-guide-layout:not(.ar-guide-layout--copy-only) {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 42%);
  }
}

@media (max-width: 900px) {
  .ar-guide-page .brand-stack {
    max-width: none;
  }

  .ar-guide-main {
    padding-top: calc(var(--mobile-topbar-h, 56px) + env(safe-area-inset-top, 0px) + 20px);
    padding-inline: 16px;
    /* Extra bottom inset so the last accordion trigger clears fixed mobile chrome */
    padding-bottom: calc(56px + env(safe-area-inset-bottom, 0px));
  }

  .ar-guide-page .foot {
    display: none !important;
  }

  .ar-guide-layout {
    grid-template-columns: 1fr;
  }

  .ar-guide-media-desktop {
    display: none;
  }

  .ar-guide-media-mobile {
    display: block;
    order: -1;
  }

  .ar-guide-media--playlist,
  .ar-guide-media--playlist .ar-guide-media-desktop,
  .ar-guide-media--playlist .ar-guide-media-mobile {
    display: block;
    order: -1;
  }

  .ar-guide-media--diagram {
    order: -1;
  }

  .ar-guide-media--diagram .ar-guide-media-frame.is-square-aspect {
    max-width: min(300px, 100%);
  }

  .ar-guide-do-dont {
    grid-template-columns: 1fr;
  }

  .ar-guide-block--with-icon {
    grid-template-columns: minmax(0, 1fr) clamp(64px, 18vw, 88px);
    gap: 10px 12px;
  }

  .ar-guide-block-icon {
    width: clamp(64px, 18vw, 88px);
    padding: 5px;
  }

  /* Illustration blocks (sections 2 & 3): full-width image above subsection heading */
  .ar-guide-block--with-icon:has(.ar-guide-block-icon--illustration) {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .ar-guide-block--with-icon:has(.ar-guide-block-icon--illustration) .ar-guide-block-icon--illustration {
    order: -1;
    width: 100%;
    max-width: min(300px, 100%);
    margin-inline: auto;
    aspect-ratio: auto;
    padding: 12px;
  }

  .ar-guide-block--with-icon:has(.ar-guide-block-icon--illustration) .ar-guide-block-icon--illustration img {
    width: 100%;
    height: auto;
    object-fit: contain;
  }

  .ar-guide-trigger-lede {
    display: none;
  }
}

@media (max-width: 900px) and (orientation: landscape) {
  .ar-guide-media-frame.is-mobile-aspect {
    max-width: min(200px, 35vw);
  }
}