/* ============================================================
   Conduit · Support site theme
   Apple-native look on top of MkDocs Material, following
   App/Theme/AppleTheme.swift:
   - SF Pro Rounded for headings, SF Pro for body text
   - Apple system colors, flat surfaces, no decorative gradients
   - Apple corner radii (10 / 14 / 18 / 22)
   ============================================================ */

/* ----- 1. Design tokens ----- */

:root,
[data-md-color-scheme="default"] {
  /* Apple system colors (light) */
  --conduit-blue:   #007AFF;
  --conduit-indigo: #5856D6;
  --conduit-green:  #34C759;
  --conduit-orange: #FF9500;
  --conduit-red:    #FF3B30;

  /* Surfaces */
  --conduit-bg:           #F2F2F7;      /* systemGroupedBackground */
  --conduit-bg-elevated:  #FFFFFF;
  --conduit-bg-grouped:   #F2F2F7;
  --conduit-fill:         rgba(120, 120, 128, 0.12);
  --conduit-separator:    rgba(60, 60, 67, 0.16);
  --conduit-label:        #1D1D1F;
  --conduit-label-2:      rgba(60, 60, 67, 0.75);
  --conduit-label-3:      rgba(60, 60, 67, 0.45);
  --conduit-tint-fill:    rgba(0, 122, 255, 0.10);
  --conduit-shadow:       0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px -12px rgba(0, 0, 0, 0.10);

  /* Terminal panel (dark in both schemes) */
  --conduit-term-bg:      #1C1C1E;
  --conduit-term-fg:      #F2F2F7;
  --conduit-term-prompt:  #30D158;

  /* Typography */
  --conduit-font:        -apple-system, BlinkMacSystemFont, "SF Pro Text",
                         "Inter Variable", system-ui, sans-serif;
  --conduit-font-rounded:-apple-system-rounded, "SF Pro Rounded",
                         ui-rounded, -apple-system, BlinkMacSystemFont,
                         "Hiragino Maru Gothic ProN", system-ui, sans-serif;
  --conduit-font-mono:   ui-monospace, "SF Mono", "Menlo", "Monaco",
                         "Cascadia Mono", "Roboto Mono", monospace;

  /* MkDocs Material overrides */
  --md-text-font: var(--conduit-font);
  --md-code-font: var(--conduit-font-mono);
  --md-primary-fg-color:           var(--conduit-blue);
  --md-primary-fg-color--light:    #4DA3FF;
  --md-primary-fg-color--dark:     #0064D2;
  --md-accent-fg-color:            var(--conduit-indigo);
  --md-typeset-a-color:            var(--conduit-blue);
  --md-default-bg-color:           var(--conduit-bg);
  --md-default-fg-color:           var(--conduit-label);
  --md-default-fg-color--light:    var(--conduit-label-2);
  --md-default-fg-color--lighter:  var(--conduit-label-3);
  --md-code-bg-color:              rgba(120, 120, 128, 0.12);
  --md-code-fg-color:              #1D1D1F;
}

[data-md-color-scheme="slate"] {
  /* Apple system colors (dark) */
  --conduit-blue:   #0A84FF;
  --conduit-indigo: #5E5CE6;
  --conduit-green:  #30D158;
  --conduit-orange: #FF9F0A;
  --conduit-red:    #FF453A;

  --conduit-bg:           #000000;
  --conduit-bg-elevated:  #1C1C1E;
  --conduit-bg-grouped:   #2C2C2E;
  --conduit-fill:         rgba(120, 120, 128, 0.24);
  --conduit-separator:    rgba(84, 84, 88, 0.65);
  --conduit-label:        #F5F5F7;
  --conduit-label-2:      rgba(235, 235, 245, 0.62);
  --conduit-label-3:      rgba(235, 235, 245, 0.32);
  --conduit-tint-fill:    rgba(10, 132, 255, 0.18);
  --conduit-shadow:       none;

  --conduit-term-bg:      #2C2C2E;

  --md-default-bg-color: var(--conduit-bg);
  --md-default-fg-color: var(--conduit-label);
  --md-typeset-a-color:  var(--conduit-blue);
  --md-code-bg-color:    rgba(120, 120, 128, 0.24);
  --md-code-fg-color:    #F5F5F7;
}

/* ----- 2. Base surface ----- */

html { scroll-behavior: smooth; }

body,
.md-typeset,
.md-container {
  font-family: var(--conduit-font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.011em;
}

.md-main { background: var(--conduit-bg); }

/* ----- 3. Header and tabs ----- */

.md-header {
  background: rgba(255, 255, 255, 0.8);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  color: var(--conduit-label);
  box-shadow: 0 0.5px 0 var(--conduit-separator);
}

[data-md-color-scheme="slate"] .md-header {
  background: rgba(22, 22, 24, 0.8);
}

.md-header__title {
  font-family: var(--conduit-font-rounded);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.md-tabs {
  background: transparent;
  color: var(--conduit-label-2);
  box-shadow: 0 0.5px 0 var(--conduit-separator);
}

.md-tabs__link {
  font-family: var(--conduit-font-rounded);
  font-weight: 600;
  font-size: 0.8rem;
  opacity: 1;
  color: var(--conduit-label-2);
  transition: color .2s ease;
}

.md-tabs__item--active .md-tabs__link,
.md-tabs__link:hover {
  color: var(--conduit-blue);
}

.md-search__form {
  border-radius: 10px;
  background: var(--conduit-fill);
}
.md-search__input { font-family: var(--conduit-font); }
.md-search__input::placeholder { color: var(--conduit-label-3); }

/* ----- 4. Typography ----- */

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4,
.md-typeset h5 {
  font-family: var(--conduit-font-rounded);
  letter-spacing: -0.022em;
  color: var(--conduit-label);
  overflow-wrap: normal;
}

.md-typeset h1 {
  font-weight: 800;
  font-size: clamp(1.7rem, 1.1rem + 2.4vw, 2.4rem);
  line-height: 1.1;
  margin: 0 0 1em;
}

.md-typeset h2 {
  font-weight: 700;
  font-size: clamp(1.3rem, 1.05rem + 1vw, 1.6rem);
  line-height: 1.2;
  margin-top: 2.2em;
  padding-top: 1.1em;
  border-top: 0.5px solid var(--conduit-separator);
}

.md-typeset h3 {
  font-weight: 600;
  font-size: 1.15rem;
  line-height: 1.3;
  margin-top: 1.8em;
}

.md-typeset h4 { font-weight: 600; font-size: 1rem; }

.md-typeset p,
.md-typeset li {
  color: var(--conduit-label);
  font-size: 0.9rem;
  line-height: 1.65;
}

.md-typeset strong { color: var(--conduit-label); font-weight: 600; }

.md-typeset a {
  color: var(--conduit-blue);
  text-decoration: none;
  text-underline-offset: 0.18em;
}
.md-typeset a:hover {
  color: var(--conduit-blue);
  text-decoration: underline;
}
.md-typeset a:focus-visible,
.md-tabs__link:focus-visible {
  outline: 2px solid var(--conduit-blue);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ----- 5. Layout ----- */

/* Wider than Material's 61rem so the text column keeps a comfortable
   width next to both sidebars. */
.md-grid { max-width: 76rem; }

/* Pages sit on one white sheet on wide screens. On phones the sheet is
   dropped so the text gets the full width. */
.md-content__inner {
  padding: 0.4rem 0 3rem;
}

@media (min-width: 60em) {
  .md-content__inner {
    background: var(--conduit-bg-elevated);
    border-radius: 22px;
    padding: 2.2rem 2.4rem 3rem;
    margin: 1.4rem 0.8rem 3rem;
    box-shadow: var(--conduit-shadow);
    border: 0.5px solid var(--conduit-separator);
  }
  /* Material's spacer before the first heading */
  .md-content__inner::before { display: none; }
}

@media (max-width: 59.9375em) {
  .md-main { background: var(--conduit-bg-elevated); }
}

/* The home page is one long page: it needs no section sidebar. */
@media (min-width: 76.25em) {
  [data-conduit-home="true"] .md-sidebar--primary { display: none; }
}

/* The README's "---" rules are for GitHub; on the site every H2 already
   has a rule above it. */
[data-conduit-home="true"] .md-typeset hr { display: none; }

/* Hide a stray "# Conduit" H1 on the home page — sync_readme.py replaces it
   with the hero, this is the fallback if the regex ever misses. The
   data-conduit-home attribute is set on <html> by overrides/main.html. */
[data-conduit-home="true"] .md-content__inner > h1:first-of-type {
  display: none;
}

/* ----- 6. Home hero (injected into index.md by scripts/sync_readme.py) ----- */

.conduit-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 2rem 2.4rem;
  align-items: start;
  margin: 0 0 2.4rem;
  padding: 0 0 2.4rem;
  border-bottom: 0.5px solid var(--conduit-separator);
}

@media (max-width: 59.9375em) {
  .conduit-hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.6rem;
    padding-top: 0.8rem;
  }
}

.conduit-hero__copy { min-width: 0; }

.md-typeset .conduit-hero__brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.md-typeset .conduit-hero__brand a { display: inline-flex; }

.conduit-hero__icon {
  width: 64px;
  height: 64px;
  border-radius: 15px;
  display: block;
  box-shadow: 0 0 0 0.5px var(--conduit-separator);
}

.md-typeset .conduit-hero h1.conduit-hero__title {
  margin: 0;
  padding: 0;
  border: 0;
  font-family: var(--conduit-font-rounded);
  font-weight: 800;
  letter-spacing: -0.035em;
  font-size: clamp(2.2rem, 1.4rem + 3vw, 3rem);
  line-height: 1;
  color: var(--conduit-label);
}

.md-typeset .conduit-hero p.conduit-hero__subtitle {
  margin: 1.1rem 0 0;
  font-size: 1.05rem;
  line-height: 1.5;
  color: var(--conduit-label-2);
  max-width: 30rem;
}

.md-typeset .conduit-hero p.conduit-hero__subtitle strong {
  color: var(--conduit-label);
  font-weight: 600;
}

.conduit-hero__cta {
  margin-top: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.md-typeset .conduit-hero p.conduit-hero__note {
  margin: 1.2rem 0 0;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--conduit-label-2);
}

/* Buttons — iOS filled and tinted styles */
.md-typeset a.conduit-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.62rem 1.05rem;
  border-radius: 12px;
  font-family: var(--conduit-font-rounded);
  font-weight: 600;
  font-size: 0.86rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: filter .15s ease;
}
.md-typeset a.conduit-btn--primary {
  background-color: var(--conduit-blue);
  color: #fff;
}
.md-typeset a.conduit-btn--primary:hover { color: #fff; filter: brightness(1.08); }
.md-typeset a.conduit-btn--tinted {
  background-color: var(--conduit-tint-fill);
  color: var(--conduit-blue);
}
.md-typeset a.conduit-btn--tinted:hover { filter: brightness(0.97); }

/* Material's own buttons (used on the QR pairing page) get the same shape. */
.md-typeset .md-button {
  border-radius: 12px;
  font-family: var(--conduit-font-rounded);
  font-weight: 600;
  border-width: 0;
  background-color: var(--conduit-tint-fill);
  color: var(--conduit-blue);
}
.md-typeset .md-button--primary {
  background-color: var(--conduit-blue);
  color: #fff;
}
.md-typeset .md-button:hover,
.md-typeset .md-button:focus {
  color: #fff;
  background-color: var(--conduit-blue);
  filter: brightness(1.08);
}

/* Terminal: what the ROS 2 host sees once Conduit is publishing */
.conduit-terminal {
  margin: 0;
  min-width: 0;
  border-radius: 14px;
  background: var(--conduit-term-bg);
  color: var(--conduit-term-fg);
  font-family: var(--conduit-font-mono);
  font-size: 0.68rem;
  line-height: 1.75;
  padding: 1rem 1.2rem 1.1rem;
  overflow-x: auto;
}

@media (max-width: 30em) {
  .conduit-terminal { font-size: 0.6rem; padding: 0.9rem 0.9rem 1rem; }
}

.conduit-terminal__prompt {
  display: block;
  margin-bottom: 0.35rem;
  white-space: nowrap;
}
.conduit-terminal__prompt::before {
  content: "$ ";
  color: var(--conduit-term-prompt);
}

.md-typeset .conduit-terminal ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.md-typeset .conduit-terminal li {
  margin: 0;
  padding: 0;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  white-space: nowrap;
}

/* The one moment of motion: topics appear one by one, as they do on the
   host when you turn sensors on. */
@keyframes conduit-topic-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.conduit-terminal li {
  animation: conduit-topic-in .25s ease-out both;
}
.conduit-terminal li:nth-child(1)  { animation-delay: .30s; }
.conduit-terminal li:nth-child(2)  { animation-delay: .38s; }
.conduit-terminal li:nth-child(3)  { animation-delay: .46s; }
.conduit-terminal li:nth-child(4)  { animation-delay: .54s; }
.conduit-terminal li:nth-child(5)  { animation-delay: .62s; }
.conduit-terminal li:nth-child(6)  { animation-delay: .70s; }
.conduit-terminal li:nth-child(7)  { animation-delay: .78s; }
.conduit-terminal li:nth-child(8)  { animation-delay: .86s; }
.conduit-terminal li:nth-child(9)  { animation-delay: .94s; }
.conduit-terminal li:nth-child(10) { animation-delay: 1.02s; }
.conduit-terminal li:nth-child(11) { animation-delay: 1.10s; }
.conduit-terminal li:nth-child(12) { animation-delay: 1.18s; }
.conduit-terminal li:nth-child(13) { animation-delay: 1.26s; }
.conduit-terminal li:nth-child(14) { animation-delay: 1.34s; }
.conduit-terminal li:nth-child(15) { animation-delay: 1.42s; }

/* ----- 7. Admonitions ----- */

.md-typeset .admonition,
.md-typeset details {
  border-width: 1px;
  border-radius: 14px;
  background: var(--conduit-bg-elevated);
  box-shadow: none;
  padding: 0 1rem;
  font-size: 0.86rem;
  overflow: hidden;
}

.md-typeset .admonition-title,
.md-typeset summary {
  margin: 0 -1rem;
  padding: 0.6rem 1rem 0.6rem 2.7rem;
  font-family: var(--conduit-font-rounded);
  font-weight: 600;
  font-size: 0.86rem;
  line-height: 1.4;
  border: 0;
}

.md-typeset .admonition-title::before,
.md-typeset summary::before {
  left: 1rem;
  top: 0.72rem;
  width: 1.05rem;
  height: 1.05rem;
}

.md-typeset summary::after {
  right: 1rem;
  top: 0.72rem;
}

.md-typeset .admonition > :last-child,
.md-typeset details > :last-child { margin-bottom: 0.9rem; }
.md-typeset details:not([open]) > summary { margin-bottom: 0; }

.md-typeset .admonition p,
.md-typeset .admonition li,
.md-typeset details p,
.md-typeset details li { font-size: 0.86rem; }

/* ----- 8. Code & tables ----- */

.md-typeset code {
  font-family: var(--conduit-font-mono);
  font-size: 0.84em;
  padding: 0.1em 0.38em;
  border-radius: 6px;
  background: var(--md-code-bg-color);
}

.md-typeset pre,
.md-typeset pre > code {
  border-radius: 14px;
}
.md-typeset pre > code {
  padding: 0.95rem 1.05rem;
  line-height: 1.55;
  background: var(--conduit-bg-grouped);
}

/* Material bleeds code blocks to the screen edges on phones; keep them
   inside the text column with their rounded corners. */
@media screen and (max-width: 44.984375em) {
  .md-content__inner > pre,
  .md-content__inner > .highlight,
  .md-content__inner > .highlight > pre,
  .md-typeset > .highlight,
  .md-typeset li > .highlight {
    margin-left: 0;
    margin-right: 0;
  }
  .md-content__inner > pre > code,
  .md-content__inner > .highlight > pre > code,
  .md-content__inner > .highlight code {
    border-radius: 14px;
  }
}

.md-typeset .highlight .filename {
  font-family: var(--conduit-font-rounded);
  background: var(--conduit-fill);
  color: var(--conduit-label-2);
  border-radius: 14px 14px 0 0;
}
.md-clipboard { color: var(--conduit-label-3); }
.md-clipboard:hover { color: var(--conduit-blue); }

/* Material lets wide tables bleed past the text column; keep them inside
   (they still scroll sideways when they are too wide). */
.md-typeset__scrollwrap { margin: 1em 0; }
.md-typeset__table { padding: 0; display: table; min-width: 100%; }

.md-typeset table:not([class]) {
  border-radius: 14px;
  overflow: hidden;
  border: 0.5px solid var(--conduit-separator);
  background: var(--conduit-bg-elevated);
  box-shadow: none;
  font-size: 0.8rem;
}
.md-typeset table:not([class]) th {
  background: var(--conduit-bg-grouped);
  font-family: var(--conduit-font-rounded);
  font-weight: 600;
  color: var(--conduit-label);
  border-bottom: 0.5px solid var(--conduit-separator);
}
.md-typeset table:not([class]) td,
.md-typeset table:not([class]) th { padding: 0.65rem 0.9rem; }
.md-typeset table:not([class]) tr { border-bottom: 0.5px solid var(--conduit-separator); }
.md-typeset table:not([class]) tr:last-child { border-bottom: 0; }
.md-typeset table:not([class]) code { white-space: nowrap; }

/* The app icon wherever a page shows it */
.md-typeset img[src$="app_icon.png"] { border-radius: 22.5%; }

/* Inline badge images (img.shields.io) */
.md-typeset img[src*="shields.io"] {
  border-radius: 4px;
  vertical-align: middle;
}

/* ----- 9. Media grids (videos, screenshots) ----- */

/* README media tables (class added by sync_readme.py) become grids. */
.md-typeset table.conduit-media,
.md-typeset table.conduit-media tbody {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 14rem), 1fr));
  gap: 1.6rem 1.2rem;
  border: 0;
  background: none;
  font-size: inherit;
}
.md-typeset table.conduit-media {
  display: block;
  margin: 1.2rem 0 1.6rem;
}
.md-typeset table.conduit-media tr { display: contents; }
.md-typeset table.conduit-media td {
  display: block;
  width: auto;
  padding: 0;
  border: 0;
  text-align: left;
  vertical-align: top;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--conduit-label-2);
}
.md-typeset table.conduit-media td:empty { display: none; }
.md-typeset table.conduit-media td br { display: none; }
.md-typeset table.conduit-media td b {
  display: block;
  margin-top: 0.55rem;
  color: var(--conduit-label);
  font-family: var(--conduit-font-rounded);
  font-size: 0.86rem;
}
.md-typeset table.conduit-media td sub {
  font-size: inherit;
  vertical-align: baseline;
}
.md-typeset table.conduit-media td img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
  box-shadow: 0 0 0 0.5px var(--conduit-separator);
}
/* Phone screenshots: two columns on phones, four on wider screens */
.md-typeset table.conduit-media:has(img[src*="assets/img/"]) tbody {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (min-width: 40em) {
  .md-typeset table.conduit-media:has(img[src*="assets/img/"]) tbody {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.md-typeset .conduit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr));
  gap: 1.4rem 1.2rem;
  margin: 1.2rem 0 1.6rem;
}
.md-typeset .conduit-grid--shots {
  grid-template-columns: repeat(auto-fill, minmax(min(42%, 9.5rem), 1fr));
}

.md-typeset .conduit-grid figure {
  margin: 0;
  min-width: 0;
  display: block;
}

.md-typeset .conduit-video {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
}
.md-typeset .conduit-video iframe,
.md-typeset .conduit-video img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  object-fit: cover;
}

.md-typeset img.conduit-shot {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
  box-shadow: 0 0 0 0.5px var(--conduit-separator);
}

.md-typeset .conduit-grid figcaption {
  margin: 0.6rem 0 0;
  max-width: none;
  text-align: left;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--conduit-label-2);
}
.md-typeset .conduit-grid figcaption strong {
  display: block;
  color: var(--conduit-label);
  font-family: var(--conduit-font-rounded);
  font-size: 0.86rem;
}

/* ----- 10. Sidebar & nav ----- */

.md-nav {
  font-family: var(--conduit-font);
  font-size: 0.8rem;
}
.md-nav__title {
  font-family: var(--conduit-font-rounded);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--conduit-label);
}
.md-nav__item .md-nav__link--active,
.md-nav__link--active {
  color: var(--conduit-blue);
  font-weight: 600;
}
.md-nav__link:hover { color: var(--conduit-blue); }

.md-sidebar__scrollwrap { scrollbar-width: thin; }

/* TOC right rail */
.md-nav--secondary .md-nav__title {
  font-size: .72rem;
  color: var(--conduit-label-2);
  background: transparent;
  box-shadow: none;
}

/* ----- 11. Footer ----- */

.md-footer {
  background: transparent;
  color: var(--conduit-label-2);
}
.md-footer__link { color: var(--conduit-label); }
.md-footer-meta { background: var(--conduit-bg-grouped); }
.md-footer-meta,
.md-footer-meta a { color: var(--conduit-label-2); }
.md-footer-meta__inner { font-family: var(--conduit-font-rounded); font-weight: 500; }

/* ----- 12. Reduced motion ----- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .conduit-terminal li { animation: none; }
}