/* ==========================================================================
   Workout Notes: documentation layer
   Three-column shell (sidebar · content · on-this-page) plus prose styles.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Shell
   -------------------------------------------------------------------------- */

.docs-shell {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr) 210px;
  gap: 48px;
  align-items: start;
  padding-top: 40px;
  padding-bottom: 40px;
}

.docs-sidebar,
.docs-toc {
  position: sticky;
  top: calc(var(--header-h) + 28px);
  max-height: calc(100vh - var(--header-h) - 56px);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}

.docs-sidebar {
  padding-right: 8px;
}

.docs-sidebar::-webkit-scrollbar,
.docs-toc::-webkit-scrollbar {
  width: 6px;
}

.docs-sidebar::-webkit-scrollbar-thumb,
.docs-toc::-webkit-scrollbar-thumb {
  background: var(--line-2);
  border-radius: 999px;
}

/* --------------------------------------------------------------------------
   Sidebar
   -------------------------------------------------------------------------- */

.docs-filter {
  position: relative;
  margin-bottom: 22px;
}

.docs-filter input {
  width: 100%;
  height: 36px;
  padding: 0 30px 0 32px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--bg-2);
  font-size: 0.8125rem;
  color: var(--fg);
}

.docs-filter input::placeholder {
  color: var(--fg-4);
}

.docs-filter input:focus {
  outline: none;
  border-color: var(--accent-line);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.docs-filter svg {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  color: var(--fg-4);
  pointer-events: none;
}

.docs-filter kbd {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-4);
  pointer-events: none;
}

.docs-nav__group {
  margin: 22px 0 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-4);
}

.docs-nav__group:first-child {
  margin-top: 0;
}

.docs-nav ul {
  display: grid;
  gap: 1px;
  margin-bottom: 4px;
}

.docs-nav a {
  display: block;
  padding: 6px 10px;
  border-radius: 7px;
  border-left: 2px solid transparent;
  font-size: 0.875rem;
  color: var(--fg-2);
  transition: color 0.15s var(--ease), background 0.15s var(--ease);
}

.docs-nav a:hover {
  color: var(--fg);
  background: var(--bg-inset);
}

.docs-nav a.is-current {
  color: var(--accent);
  background: var(--accent-soft);
  border-left-color: var(--accent);
  font-weight: 500;
}

.docs-nav li[hidden] {
  display: none;
}

.docs-nav__empty {
  padding: 8px 10px;
  font-size: 0.8125rem;
  color: var(--fg-4);
}

.docs-sidebar__foot {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 8px;
}

.docs-sidebar__foot a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--fg-3);
}

.docs-sidebar__foot a:hover {
  color: var(--accent);
}

.docs-sidebar__foot svg {
  width: 14px;
  height: 14px;
}

/* --------------------------------------------------------------------------
   On this page
   -------------------------------------------------------------------------- */

.docs-toc__title {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-4);
}

.docs-toc ul {
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--line);
}

.docs-toc a {
  display: block;
  padding: 4px 0 4px 12px;
  margin-left: -1px;
  border-left: 1px solid transparent;
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--fg-3);
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.docs-toc a:hover {
  color: var(--fg);
}

.docs-toc a.is-active {
  color: var(--accent);
  border-left-color: var(--accent);
}

.docs-toc li.lvl-3 a {
  padding-left: 24px;
  font-size: 0.78125rem;
  color: var(--fg-4);
}

.docs-toc li.lvl-3 a:hover,
.docs-toc li.lvl-3 a.is-active {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   Content head
   -------------------------------------------------------------------------- */

.docs-main {
  min-width: 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--fg-4);
}

.breadcrumb a {
  color: var(--fg-3);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb span[aria-current] {
  color: var(--fg-2);
}

.doc-head {
  margin-top: 26px;
  padding-bottom: 30px;
  margin-bottom: 38px;
  border-bottom: 1px solid var(--line);
}

.doc-head h1 {
  margin-top: 14px;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  letter-spacing: -0.035em;
}

.doc-head .lead {
  margin-top: 16px;
  max-width: 68ch;
  font-size: 1.0625rem;
}

.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 22px;
}

/* --------------------------------------------------------------------------
   Prose
   -------------------------------------------------------------------------- */

.prose {
  max-width: 74ch;
  font-size: 1rem;
  line-height: 1.72;
  color: var(--fg-2);
}

.prose > * + * {
  margin-top: 20px;
}

.prose h2 {
  margin-top: 60px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  font-size: 1.5rem;
  color: var(--fg);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.prose h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.prose h3 {
  margin-top: 38px;
  font-size: 1.125rem;
  color: var(--fg);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.prose h4 {
  margin-top: 28px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--fg);
}

.prose strong {
  color: var(--fg);
  font-weight: 500;
}

.prose em {
  color: var(--fg);
  font-style: italic;
}

.prose a:not(.btn):not(.arrow-link):not(.card) {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent-line);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.15s var(--ease);
}

.prose a:not(.btn):not(.arrow-link):not(.card):hover {
  text-decoration-color: var(--accent);
}

.prose ul,
.prose ol {
  display: grid;
  gap: 10px;
  padding-left: 4px;
}

.prose ul > li {
  position: relative;
  padding-left: 20px;
}

.prose ul > li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.68em;
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: var(--fg-4);
}

.prose ol {
  counter-reset: prose-ol;
}

.prose ol > li {
  position: relative;
  padding-left: 28px;
  counter-increment: prose-ol;
}

.prose ol > li::before {
  content: counter(prose-ol);
  position: absolute;
  left: 0;
  top: 0.1em;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-3);
}

.prose li > ul,
.prose li > ol {
  margin-top: 10px;
}

.prose code {
  padding: 0.14em 0.42em;
  border-radius: 5px;
  border: 1px solid var(--line);
  background: var(--bg-3);
  font-family: var(--font-mono);
  font-size: 0.84em;
  color: var(--fg);
  white-space: nowrap;
}

.prose pre {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-1);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--fg-2);
}

.prose pre code {
  padding: 0;
  border: 0;
  background: none;
  font-size: inherit;
  white-space: pre;
}

.prose blockquote {
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--accent-line);
  color: var(--fg-2);
  font-style: italic;
}

/* headings get a copyable anchor */
.anchor {
  margin-left: 8px;
  font-weight: 400;
  color: var(--fg-4);
  opacity: 0;
  text-decoration: none !important;
  transition: opacity 0.15s var(--ease);
}

.prose h2:hover .anchor,
.prose h3:hover .anchor,
.anchor:focus {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   Prose tables
   -------------------------------------------------------------------------- */

.prose .table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-1);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.prose th,
.prose td {
  padding: 11px 15px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.prose thead th {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  background: var(--bg-3);
  white-space: nowrap;
}

.prose tbody tr:last-child td {
  border-bottom: 0;
}

.prose td code {
  white-space: nowrap;
}

.prose td strong {
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   Callouts
   -------------------------------------------------------------------------- */

.callout {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left-width: 2px;
  border-radius: var(--radius);
  background: var(--bg-1);
  font-size: 0.9375rem;
  line-height: 1.65;
}

.callout > svg {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  color: var(--fg-3);
}

.callout__body > * + * {
  margin-top: 10px;
}

.callout__title {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}

.callout--note {
  border-left-color: var(--accent);
}
.callout--note > svg,
.callout--note .callout__title {
  color: var(--accent);
}

.callout--tip {
  border-left-color: var(--green);
}
.callout--tip > svg,
.callout--tip .callout__title {
  color: var(--green);
}

.callout--warn {
  border-left-color: var(--amber);
}
.callout--warn > svg,
.callout--warn .callout__title {
  color: var(--amber);
}

.callout--android {
  border-left-color: var(--violet);
}
.callout--android > svg,
.callout--android .callout__title {
  color: var(--violet);
}

/* --------------------------------------------------------------------------
   Spec list (key → value)
   -------------------------------------------------------------------------- */

.spec {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.spec__row {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 18px;
  padding: 13px 16px;
  border-top: 1px solid var(--line);
  font-size: 0.9375rem;
}

.spec__row:first-child {
  border-top: 0;
}

.spec__row dt {
  font-weight: 500;
  color: var(--fg);
}

.spec__row dd {
  margin: 0;
  color: var(--fg-2);
}

@media (max-width: 700px) {
  .spec__row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

/* --------------------------------------------------------------------------
   Formula block
   -------------------------------------------------------------------------- */

.formula {
  padding: 18px 20px;
  border: 1px solid var(--accent-line);
  border-radius: var(--radius);
  background: var(--accent-soft);
  text-align: center;
}

.formula code {
  border: 0 !important;
  background: none !important;
  font-size: 1rem !important;
  color: var(--fg) !important;
  white-space: normal !important;
}

.formula span {
  display: block;
  margin-top: 8px;
  font-size: 0.8125rem;
  color: var(--fg-3);
}

/* --------------------------------------------------------------------------
   Figures
   -------------------------------------------------------------------------- */

.prose figure {
  margin: 0;
}

.figure-phone {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--bg-1);
}

.figure-phone figcaption {
  font-size: 0.9375rem;
  color: var(--fg-2);
}

.figure-phone figcaption strong {
  display: block;
  margin-bottom: 8px;
  color: var(--fg);
  font-weight: 500;
}

.figure-phone .phone {
  max-width: 200px;
}

@media (max-width: 620px) {
  .figure-phone {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }
}

/* --------------------------------------------------------------------------
   Doc card grids (used on the docs home)
   -------------------------------------------------------------------------- */

.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.doc-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
}

.doc-card h3 {
  margin: 0 !important;
  font-size: 1rem;
  color: var(--fg);
}

.doc-card p {
  margin: 0 !important;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--fg-2);
}

.doc-card .pill {
  align-self: flex-start;
}

.prose .doc-grid a.card {
  text-decoration: none !important;
}

/* --------------------------------------------------------------------------
   Pager
   -------------------------------------------------------------------------- */

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.pager a {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-1);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.pager a:hover {
  border-color: var(--accent-line);
  transform: translateY(-2px);
}

.pager small {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-4);
}

.pager strong {
  display: block;
  margin-top: 6px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--fg);
}

.pager .pager__next {
  text-align: right;
}

@media (max-width: 560px) {
  .pager {
    grid-template-columns: 1fr;
  }
  .pager .pager__next {
    text-align: left;
  }
}

/* --------------------------------------------------------------------------
   Feedback footer
   -------------------------------------------------------------------------- */

.doc-foot {
  margin-top: 40px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-1);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.875rem;
  color: var(--fg-3);
}

/* --------------------------------------------------------------------------
   Sidebar drawer on narrow screens
   -------------------------------------------------------------------------- */

.sidebar-toggle {
  display: none;
}

.docs-backdrop {
  display: none;
}

@media (max-width: 1180px) {
  .docs-shell {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 40px;
  }
  .docs-toc {
    display: none;
  }
}

@media (max-width: 900px) {
  .docs-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding-top: 26px;
  }

  .sidebar-toggle {
    display: inline-flex;
  }

  .docs-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 90;
    width: min(300px, 84vw);
    max-height: none;
    height: 100%;
    padding: 22px 20px;
    border-right: 1px solid var(--line);
    background: var(--bg-1);
    transform: translateX(-104%);
    transition: transform 0.26s var(--ease);
  }

  .docs-sidebar.is-open {
    transform: none;
    box-shadow: var(--shadow-lg);
  }

  .docs-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 80;
    background: rgba(0, 0, 0, 0.55);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.24s var(--ease);
  }

  .docs-backdrop.is-open {
    opacity: 1;
    pointer-events: auto;
  }
}

/* --------------------------------------------------------------------------
   Compact footer on docs pages
   -------------------------------------------------------------------------- */

.docs-page .site-footer {
  margin-top: 40px;
}

.docs-page .site-footer__grid {
  padding: 40px 0 28px;
}