/* =========================================================================
   Robusta RPA — MkDocs Material overrides
   Brand palette:
     --rob-blue   #0072CE  (Pantone 285 C)  primary, links, hero accents
     --rob-gold   #FFCC66  (Pantone P17-6)  highlights, hover glows, badges
     --rob-ink    #27251F  (Process Black)  dark surfaces, headings
   ========================================================================= */

:root {
  /* Brand */
  --rob-blue: #0072CE;
  --rob-blue-600: #005FAD;
  --rob-blue-700: #004F8F;
  --rob-blue-050: #E6F1FB;
  --rob-blue-100: #C7E0F4;

  --rob-gold: #FFCC66;
  --rob-gold-300: #FFD98A;
  --rob-gold-600: #E6AC3D;
  --rob-gold-050: #FFF6E0;

  --rob-ink: #27251F;
  --rob-ink-700: #3B3933;
  --rob-ink-500: #5C5A52;
  --rob-ink-300: #8A8880;
  --rob-paper: #FBFAF7;       /* warm off-white pairing with --rob-ink */
  --rob-paper-2: #F4F2EC;
  --rob-line: #E6E3DA;

  /* Map onto Material primitives so links/buttons inherit correctly */
  --md-primary-fg-color:           var(--rob-blue);
  --md-primary-fg-color--light:    #2A8CDB;
  --md-primary-fg-color--dark:     var(--rob-blue-600);
  --md-primary-bg-color:           #FFFFFF;
  --md-primary-bg-color--light:    rgba(255, 255, 255, 0.7);

  --md-accent-fg-color:            var(--rob-blue);
  --md-accent-fg-color--transparent: rgba(0, 114, 206, 0.08);
  --md-accent-bg-color:             #FFFFFF;

  --md-typeset-a-color:             var(--rob-blue);

  /* Subtle warmth on the default page surfaces */
  --md-default-bg-color:            var(--rob-paper);
  --md-default-fg-color:            var(--rob-ink);
  --md-default-fg-color--light:     var(--rob-ink-500);
  --md-default-fg-color--lighter:   var(--rob-ink-300);
  --md-default-fg-color--lightest:  rgba(39, 37, 31, 0.07);

  --md-code-bg-color:               #F4F2EC;
  --md-code-fg-color:               var(--rob-ink);

  /* Shadow palette built off ink (warmer than pure black) */
  --rob-shadow-sm: 0 1px 2px rgba(39, 37, 31, 0.06), 0 1px 1px rgba(39, 37, 31, 0.04);
  --rob-shadow-md: 0 6px 18px rgba(39, 37, 31, 0.08), 0 2px 4px rgba(39, 37, 31, 0.05);
  --rob-shadow-lg: 0 24px 48px rgba(39, 37, 31, 0.14), 0 8px 16px rgba(39, 37, 31, 0.08);

  --rob-radius-sm: 6px;
  --rob-radius:    10px;
  --rob-radius-lg: 16px;
}

/* Dark mode (Material's [data-md-color-scheme="slate"]) */
[data-md-color-scheme="slate"] {
  --md-default-bg-color:            #1B1A16;   /* warm near-black */
  --md-default-fg-color:            #F4F2EC;
  --md-default-fg-color--light:     #C9C6BC;
  --md-default-fg-color--lighter:   #8A8880;
  --md-default-fg-color--lightest:  rgba(244, 242, 236, 0.08);

  --md-typeset-a-color:             #5BB0F2;
  --md-accent-fg-color:             var(--rob-gold);
  --md-accent-fg-color--transparent: rgba(255, 204, 102, 0.12);

  --md-code-bg-color:               #2A2823;
  --md-code-fg-color:               #F4F2EC;

  --rob-paper: #1B1A16;
  --rob-paper-2: #25231E;
  --rob-line: #3B3933;

  --rob-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --rob-shadow-md: 0 6px 18px rgba(0, 0, 0, 0.45), 0 2px 4px rgba(0, 0, 0, 0.3);
  --rob-shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.55), 0 8px 16px rgba(0, 0, 0, 0.4);
}

/* --------------------------------------------------------------------------
   Base typography polish
   -------------------------------------------------------------------------- */

.md-typeset {
  font-feature-settings: "ss01", "cv11";
  color: var(--md-default-fg-color);
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  color: var(--md-default-fg-color);
  letter-spacing: -0.015em;
  font-weight: 700;
}

.md-typeset h1 {
  font-size: 2.4rem;
  line-height: 1.1;
  margin-bottom: 0.8rem;
}

.md-typeset h2 {
  font-size: 1.6rem;
  line-height: 1.2;
  margin-top: 2.4rem;
}

.md-typeset a:not(.btn):not(.card):not(.card__link):not(.version-pill):not(.section-header__link) {
  color: var(--rob-blue);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s ease;
}

.md-typeset a:not(.btn):not(.card):not(.card__link):not(.version-pill):not(.section-header__link):hover {
  color: var(--rob-blue-600);
}

/* Make the content area breathe a touch more on wide screens */
.md-main__inner {
  margin-top: 0;
}

/* --------------------------------------------------------------------------
   HERO
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  margin: -1.5rem -1.2rem 3rem;
  padding: 5.5rem 3rem 5rem;
  background: var(--rob-ink);
  color: #F4F2EC;
  border-radius: 0;
  overflow: hidden;
  isolation: isolate;
}

/* Blue glow + gold accent washes */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 18% 30%, rgba(0, 114, 206, 0.55), transparent 60%),
    radial-gradient(ellipse 50% 70% at 92% 110%, rgba(255, 204, 102, 0.18), transparent 65%);
  pointer-events: none;
  z-index: -1;
}

/* Subtle grid texture */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(244, 242, 236, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 242, 236, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 30% 50%, #000 0%, transparent 70%);
          mask-image: radial-gradient(ellipse 70% 60% at 30% 50%, #000 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
  opacity: 0.6;
}

.hero-inner {
  max-width: 64rem;
  position: relative;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--rob-gold);
  margin-bottom: 1.25rem;
}

.hero-eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--rob-gold);
  display: inline-block;
}

.version-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.32rem 0.7rem 0.32rem 0.55rem;
  background: rgba(255, 204, 102, 0.14);
  border: 1px solid rgba(255, 204, 102, 0.45);
  color: var(--rob-gold);
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 1.4rem;
  backdrop-filter: blur(4px);
}

.version-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--rob-gold);
  box-shadow: 0 0 0 3px rgba(255, 204, 102, 0.25);
}

.hero h1.hero-title {
  color: #FFFFFF;
  font-size: 3.4rem;
  line-height: 1.04;
  letter-spacing: -0.025em;
  font-weight: 700;
  margin: 0 0 1.2rem;
  max-width: 22ch;
}

.hero h1.hero-title .accent {
  color: var(--rob-gold);
  font-style: normal;
}

.hero-subtitle {
  font-size: 1.15rem;
  line-height: 1.55;
  color: #C9C6BC;
  max-width: 58ch;
  margin: 0 0 2rem;
}

.hero-cta {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.78rem 1.3rem;
  border-radius: var(--rob-radius);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  text-decoration: none;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, color 0.18s ease;
  cursor: pointer;
  white-space: nowrap;
}

.btn--primary,
.md-typeset a.btn--primary {
  background: var(--rob-blue);
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
  box-shadow: 0 10px 24px rgba(0, 114, 206, 0.35), 0 1px 0 rgba(255,255,255,0.06) inset;
}

.btn--primary:hover,
.md-typeset a.btn--primary:hover {
  background: #1A82D5;
  transform: translateY(-1px);
  box-shadow: 0 14px 32px rgba(0, 114, 206, 0.45), 0 1px 0 rgba(255,255,255,0.08) inset;
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
}

.btn--ghost,
.md-typeset a.btn--ghost {
  background: transparent;
  color: #F4F2EC !important;
  -webkit-text-fill-color: #F4F2EC !important;
  border: 1px solid rgba(244, 242, 236, 0.22);
}

.btn--ghost:hover,
.md-typeset a.btn--ghost:hover {
  border-color: var(--rob-gold);
  color: var(--rob-gold) !important;
  -webkit-text-fill-color: var(--rob-gold) !important;
  background: rgba(255, 204, 102, 0.06);
}

.btn .arrow {
  transition: transform 0.18s ease;
}

.btn:hover .arrow {
  transform: translateX(3px);
}

/* Hero meta strip — quick stats / facts */
.hero-meta {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
  max-width: 56rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(244, 242, 236, 0.12);
}

.hero-meta dt {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(244, 242, 236, 0.55);
  margin-bottom: 0.4rem;
  font-weight: 500;
}

.hero-meta dd {
  font-size: 1.15rem;
  font-weight: 600;
  color: #F4F2EC;
  margin: 0;
}

.hero-meta dd .unit {
  color: var(--rob-gold);
  font-weight: 500;
  margin-left: 0.15rem;
}

/* --------------------------------------------------------------------------
   VERSION PILLS
   -------------------------------------------------------------------------- */

.version-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin: 2.5rem 0 1rem;
}

.version-pills__label {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--md-default-fg-color--light);
  font-weight: 600;
  margin-right: 0.5rem;
}

.version-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.38rem 0.85rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid var(--rob-blue);
  color: var(--rob-blue);
  background: transparent;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.version-pill:hover {
  background: var(--rob-blue-050);
  color: var(--rob-blue-700);
  transform: translateY(-1px);
}

.version-pill--active,
.md-typeset a.version-pill--active {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  overflow: visible;
  min-width: fit-content;
  background: var(--rob-blue);
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
  border-color: var(--rob-blue);
}

.version-pill--active:hover,
.md-typeset a.version-pill--active:hover {
  background: var(--rob-blue-600);
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
}

.version-pill--active::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--rob-gold);
  box-shadow: 0 0 0 3px rgba(255, 204, 102, 0.25);
  flex-shrink: 0;
  z-index: 0;
}

[data-md-color-scheme="slate"] .version-pill {
  border-color: #5BB0F2;
  color: #5BB0F2;
}

[data-md-color-scheme="slate"] .version-pill:hover {
  background: rgba(91, 176, 242, 0.12);
}

[data-md-color-scheme="slate"] .version-pill--active {
  background: var(--rob-blue);
  color: #FFFFFF;
}

/* --------------------------------------------------------------------------
   CARDS GRID
   -------------------------------------------------------------------------- */

.section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin: 3rem 0 1.4rem;
  gap: 2rem;
}

.section-header h2 {
  margin: 0;
  font-size: 1.5rem;
}

.section-header .eyebrow {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 600;
  color: var(--rob-blue);
  margin-bottom: 0.4rem;
}

.section-header__link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--rob-blue);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
  margin: 1.5rem 0 3rem;
}

@media (max-width: 960px) {
  .cards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .cards-grid { grid-template-columns: 1fr; }
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.5rem 1.4rem;
  background: #FFFFFF;
  border: 1px solid var(--rob-line);
  border-radius: var(--rob-radius-lg);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

[data-md-color-scheme="slate"] .card {
  background: var(--rob-paper-2);
  border-color: var(--rob-line);
}

/* Animated left-border accent — slides in on hover */
.card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--rob-blue);
  transform: translateX(-100%);
  transition: transform 0.22s ease;
}

/* Subtle gold corner glow on hover */
.card::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -30%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse at center, rgba(255, 204, 102, 0.18), transparent 70%);
  opacity: 0;
  transition: opacity 0.22s ease;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--rob-shadow-lg);
  border-color: rgba(0, 114, 206, 0.35);
}

.card:hover::before { transform: translateX(0); }
.card:hover::after  { opacity: 1; }

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--rob-blue-050);
  color: var(--rob-blue);
  margin-bottom: 1.1rem;
  flex-shrink: 0;
}

.card__icon svg {
  width: 22px;
  height: 22px;
}

/* Variant — gold-accented icon background (used for Release Notes) */
.card__icon--gold {
  background: var(--rob-gold-050);
  color: var(--rob-gold-600);
}

[data-md-color-scheme="slate"] .card__icon {
  background: rgba(0, 114, 206, 0.18);
  color: #5BB0F2;
}

[data-md-color-scheme="slate"] .card__icon--gold {
  background: rgba(255, 204, 102, 0.18);
  color: var(--rob-gold);
}

.card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--md-default-fg-color);
  margin: 0 0 0.45rem;
  letter-spacing: -0.01em;
}

.card__desc {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--md-default-fg-color--light);
  margin: 0 0 1.2rem;
  flex-grow: 1;
}

.card__link {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--rob-blue);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  letter-spacing: -0.005em;
}

.card__link .arrow {
  transition: transform 0.18s ease;
  font-size: 1rem;
  line-height: 1;
}

.card:hover .card__link .arrow {
  transform: translateX(4px);
}

/* Badge inside card for "new" / version tags */
.card__badge {
  position: absolute;
  top: 1.1rem;
  right: 1.1rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  background: var(--rob-gold);
  color: var(--rob-ink);
}

/* --------------------------------------------------------------------------
   FEATURE STRIP — three highlights between cards and CTA
   -------------------------------------------------------------------------- */

.feature-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2.5rem;
  margin: 4rem 0;
  padding: 2.4rem 0;
  border-top: 1px solid var(--rob-line);
  border-bottom: 1px solid var(--rob-line);
}

@media (max-width: 800px) {
  .feature-strip { grid-template-columns: 1fr; gap: 1.6rem; }
}

.feature {
  display: flex;
  gap: 0.95rem;
  align-items: flex-start;
}

.feature__num {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--rob-blue);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
  padding-top: 0.15rem;
}

.feature h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.005em;
}

.feature p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--md-default-fg-color--light);
}

/* --------------------------------------------------------------------------
   BOTTOM CTA
   -------------------------------------------------------------------------- */

.cta {
  position: relative;
  background: var(--rob-ink);
  color: #F4F2EC;
  border-radius: var(--rob-radius-lg);
  padding: 3.5rem 3rem;
  margin: 4rem 0 2rem;
  overflow: hidden;
  isolation: isolate;
}

.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 90% at 90% 50%, rgba(0, 114, 206, 0.45), transparent 60%),
    radial-gradient(ellipse 40% 80% at 10% 110%, rgba(255, 204, 102, 0.14), transparent 65%);
  z-index: -1;
}

.cta-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

@media (max-width: 800px) {
  .cta-inner { grid-template-columns: 1fr; }
}

.cta__eyebrow {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--rob-gold);
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.cta h2 {
  color: #FFFFFF;
  font-size: 2rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.8rem;
  max-width: 18ch;
}

.cta p {
  color: rgba(244, 242, 236, 0.72);
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
  max-width: 42ch;
}

.cta-actions {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  align-items: stretch;
}

@media (min-width: 801px) {
  .cta-actions { justify-self: end; min-width: 240px; }
}

/* --------------------------------------------------------------------------
   Inline code & misc
   -------------------------------------------------------------------------- */

.md-typeset code {
  background: var(--md-code-bg-color);
  color: var(--rob-blue-700);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-size: 0.86em;
}

[data-md-color-scheme="slate"] .md-typeset code {
  color: var(--rob-gold);
}

/* Selection */
::selection {
  background: rgba(0, 114, 206, 0.22);
}

/* --------------------------------------------------------------------------
   Header — keep MkDocs Material layout, only brand it
   -------------------------------------------------------------------------- */

.md-header {
  background: #27251F !important;
  color: #F4F2EC;
}

.md-header__inner {
  display: flex;
  align-items: center;
}

.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  height: 1.7rem;
  width: auto;
}

/* Do not remove title container; it is needed for layout spacing */
.md-header__title {
  display: block !important;
  flex: 1 1 auto;
  min-width: 0;
}

/* Hide title text visually without breaking flex layout */
.md-header__title .md-header__topic {
  visibility: hidden;
}

.md-header__button,
.md-header__option,
.md-header__source {
  color: #F4F2EC;
}

/* Repo icon: replace GitHub icon with favicon */
.md-source__icon svg {
  display: none !important;
}

.md-source__icon::before {
  content: "";
  display: block;
  width: 20px;
  height: 20px;
  background: url("../images/favicon.ico") center / contain no-repeat;
}

/* Hide repo text, keep icon/link */
.md-source__repository {
  display: none !important;
}

.md-search {
  margin-left: 0;
}

/* Version selector — dark header uyumu */
.md-version {
  flex-shrink: 0;
  height: 2.4rem;
  font-size: 0.78rem;
  display: flex;
  align-items: center;
}

.md-version__current {
  color: #F4F2EC !important;
  opacity: 0.85;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.md-version__current:hover {
  opacity: 1;
}

.md-version__list {
  background-color: #27251F;
  border: 1px solid rgba(244,242,236,0.12);
  border-radius: 4px;
}

.md-version__link {
  color: #F4F2EC !important;
  opacity: 0.8;
}

.md-version__link:hover,
.md-version__link:focus {
  background-color: rgba(244,242,236,0.1) !important;
  color: #F4F2EC !important;
  opacity: 1;
}

.md-version__link[aria-current="page"] {
  opacity: 1;
  font-weight: 600;
}

@media screen and (max-width: 76.1875em) {
  .md-header__title {
    flex: 1 1 auto;
  }

  .md-header__source {
    display: none;
  }
}

/* Footer — not sticky, stays at bottom of content */
.md-footer {
  position: relative !important;
  background: var(--rob-ink);
  margin-top: auto;
}

html, body { height: 100%; }

.md-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.md-main { flex: 1; }

.md-footer-meta {
  background: #1B1A16;
}

/* --------------------------------------------------------------------------
   INNER PAGE — three-column doc layout
   -------------------------------------------------------------------------- */

.doc-shell {
  max-width: 84rem;
  margin: 0 auto;
  padding: 1.6rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) 220px;
  gap: 2.4rem;
  align-items: start;
}

@media (max-width: 1100px) {
  .doc-shell { grid-template-columns: 220px minmax(0, 1fr); }
  .doc-toc { display: none; }
}
@media (max-width: 800px) {
  .doc-shell { grid-template-columns: 1fr; }
  .doc-nav { display: none; }
}

/* Left nav */
.doc-nav {
  position: sticky;
  top: 76px;
  font-size: 0.85rem;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  padding-right: 0.5rem;
}

.doc-nav__section {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--md-default-fg-color--lighter);
  margin: 1.4rem 0 0.6rem;
}
.doc-nav__section:first-child { margin-top: 0; }

.doc-nav__group { margin-bottom: 0.1rem; }

.doc-nav__group > summary,
.doc-nav__item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  color: var(--md-default-fg-color--light);
  text-decoration: none;
  cursor: pointer;
  list-style: none;
  transition: background 0.12s ease, color 0.12s ease;
  font-weight: 500;
}
.doc-nav__group > summary::-webkit-details-marker { display: none; }

.doc-nav__group > summary:hover,
.doc-nav__item:hover {
  background: var(--rob-blue-050);
  color: var(--rob-blue-700);
}

[data-md-color-scheme="slate"] .doc-nav__group > summary:hover,
[data-md-color-scheme="slate"] .doc-nav__item:hover {
  background: rgba(0, 114, 206, 0.14);
  color: #8ECAF7;
}

.doc-nav__item--active {
  background: var(--rob-blue-050);
  color: var(--rob-blue-700) !important;
  font-weight: 600;
  position: relative;
}
.doc-nav__item--active::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 6px;
  bottom: 6px;
  width: 3px;
  background: var(--rob-blue);
  border-radius: 3px;
}

[data-md-color-scheme="slate"] .doc-nav__item--active {
  background: rgba(0, 114, 206, 0.18);
  color: #5BB0F2 !important;
}

.doc-nav__group > summary .chev {
  margin-left: auto;
  transition: transform 0.15s ease;
  opacity: 0.55;
}
.doc-nav__group[open] > summary .chev { transform: rotate(90deg); }

.doc-nav__children {
  display: flex;
  flex-direction: column;
  padding: 0.15rem 0 0.4rem 0.7rem;
  margin-left: 0.55rem;
  border-left: 1px solid var(--rob-line);
  gap: 1px;
}

/* Article column */
.doc-article {
  min-width: 0;
  max-width: 46rem;
}

.doc-breadcrumb {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  font-size: 0.78rem;
  color: var(--md-default-fg-color--light);
  margin-bottom: 0.9rem;
  flex-wrap: wrap;
}
.doc-breadcrumb a {
  color: inherit;
  text-decoration: none;
  font-weight: 500;
}
.doc-breadcrumb a:hover { color: var(--rob-blue); }
.doc-breadcrumb .sep { opacity: 0.5; }
.doc-breadcrumb .current { color: var(--md-default-fg-color); font-weight: 600; }

.doc-title {
  font-size: 2.2rem;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 0.6rem;
  font-weight: 700;
  color: var(--md-default-fg-color);
}

.doc-lede {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--md-default-fg-color--light);
  margin: 0 0 1.4rem;
  max-width: 42rem;
}

.doc-meta {
  display: flex;
  gap: 1.2rem;
  align-items: center;
  flex-wrap: wrap;
  padding: 0.8rem 0;
  margin-bottom: 1.6rem;
  border-top: 1px solid var(--rob-line);
  border-bottom: 1px solid var(--rob-line);
  font-size: 0.78rem;
  color: var(--md-default-fg-color--light);
}
.doc-meta strong { color: var(--md-default-fg-color); font-weight: 600; }
.doc-meta .doc-meta__sep { width: 1px; height: 14px; background: var(--rob-line); }
.doc-meta a { color: var(--rob-blue); font-weight: 600; text-decoration: none; }

.doc-article h2 {
  font-size: 1.5rem;
  margin: 2.4rem 0 0.8rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  scroll-margin-top: 100px;
  color: var(--md-default-fg-color);
}
.doc-article h3 {
  font-size: 1.15rem;
  margin: 1.8rem 0 0.5rem;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--md-default-fg-color);
}
.doc-article p {
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0 0 1rem;
}
.doc-article code:not(pre code) {
  background: var(--md-code-bg-color);
  color: var(--rob-blue-700);
  padding: 0.1em 0.36em;
  border-radius: 4px;
  font-size: 0.85em;
  font-family: "Roboto Mono", "SF Mono", Menlo, monospace;
}
[data-md-color-scheme="slate"] .doc-article code:not(pre code) { color: var(--rob-gold); }

/* Inline callout / admonition */
.doc-callout {
  display: flex;
  gap: 0.85rem;
  padding: 1rem 1.1rem;
  border-radius: var(--rob-radius);
  margin: 1.4rem 0;
  border: 1px solid var(--rob-line);
  background: var(--rob-paper-2);
  font-size: 0.9rem;
  line-height: 1.55;
}
.doc-callout--info  { border-left: 3px solid var(--rob-blue); }
.doc-callout--tip   { border-left: 3px solid var(--rob-gold); background: var(--rob-gold-050); }
[data-md-color-scheme="slate"] .doc-callout--tip { background: rgba(255,204,102,0.08); border-color: rgba(255,204,102,0.25); border-left-color: var(--rob-gold); }
.doc-callout__icon {
  width: 22px; height: 22px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 50%;
  color: var(--rob-blue);
  background: var(--rob-blue-050);
}
.doc-callout--tip .doc-callout__icon { color: var(--rob-gold-600); background: rgba(255,204,102,0.22); }
.doc-callout strong { color: var(--md-default-fg-color); }

/* Code block */
.doc-code {
  background: #27251F;
  color: #F4F2EC;
  border-radius: var(--rob-radius);
  margin: 1.2rem 0;
  overflow: hidden;
  font-size: 0.85rem;
}
.doc-code__head {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.55rem 0.9rem;
  background: rgba(244, 242, 236, 0.04);
  border-bottom: 1px solid rgba(244, 242, 236, 0.08);
  font-family: "Roboto Mono", monospace;
  font-size: 0.74rem;
  color: rgba(244, 242, 236, 0.6);
}
.doc-code__head .lang-tag {
  margin-left: auto;
  color: var(--rob-gold);
  font-weight: 600;
}
.doc-code pre {
  margin: 0;
  padding: 1rem 1.1rem;
  font-family: "Roboto Mono", "SF Mono", Menlo, monospace;
  line-height: 1.6;
  overflow-x: auto;
}
.doc-code .tok-kw { color: #FFCC66; }
.doc-code .tok-str { color: #9BD3A0; }
.doc-code .tok-com { color: rgba(244,242,236,0.4); font-style: italic; }
.doc-code .tok-fn { color: #7FC1F2; }

/* Table */
.doc-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 1.2rem 0;
  font-size: 0.88rem;
  border: 1px solid var(--rob-line);
  border-radius: var(--rob-radius);
  overflow: hidden;
}
.doc-table th {
  text-align: left;
  background: var(--rob-paper-2);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--md-default-fg-color--light);
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--rob-line);
  font-weight: 600;
}
.doc-table td {
  padding: 0.7rem 1rem;
  border-top: 1px solid var(--rob-line);
  vertical-align: top;
}
.doc-table td:first-child { font-weight: 600; color: var(--md-default-fg-color); }
.doc-table tr:first-child td { border-top: 0; }

/* Image placeholder */
.doc-figure {
  margin: 1.6rem 0;
  border: 1px solid var(--rob-line);
  border-radius: var(--rob-radius);
  overflow: hidden;
  background: var(--rob-paper-2);
}
.doc-figure__frame {
  aspect-ratio: 16 / 9;
  display: grid; place-items: center;
  background-image:
    repeating-linear-gradient(135deg, transparent 0 14px, rgba(39,37,31,0.05) 14px 15px);
  color: var(--md-default-fg-color--light);
  font-family: "Roboto Mono", monospace;
  font-size: 0.8rem;
}
[data-md-color-scheme="slate"] .doc-figure__frame {
  background-image: repeating-linear-gradient(135deg, transparent 0 14px, rgba(244,242,236,0.04) 14px 15px);
}
.doc-figure__caption {
  padding: 0.65rem 1rem;
  font-size: 0.8rem;
  color: var(--md-default-fg-color--light);
  border-top: 1px solid var(--rob-line);
  background: var(--rob-paper);
}

/* Numbered steps */
.doc-steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 1.4rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.doc-steps li {
  counter-increment: step;
  position: relative;
  padding: 1rem 1.1rem 1rem 3rem;
  background: var(--rob-paper-2);
  border: 1px solid var(--rob-line);
  border-radius: var(--rob-radius);
  font-size: 0.92rem;
  line-height: 1.55;
}
.doc-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 1rem;
  top: 1rem;
  font-family: "Roboto Mono", monospace;
  font-weight: 700;
  color: var(--rob-blue);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}
.doc-steps li strong { display: block; margin-bottom: 0.2rem; color: var(--md-default-fg-color); font-weight: 600; }

/* Pagination footer */
.doc-pager {
  margin-top: 3rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rob-line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.doc-pager a {
  display: flex;
  flex-direction: column;
  padding: 1rem 1.2rem;
  border: 1px solid var(--rob-line);
  border-radius: var(--rob-radius);
  text-decoration: none;
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.doc-pager a:hover {
  border-color: var(--rob-blue);
  transform: translateY(-2px);
  box-shadow: var(--rob-shadow-md);
}
.doc-pager a.next { text-align: right; }
.doc-pager .label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--md-default-fg-color--light);
  margin-bottom: 0.3rem;
  font-weight: 600;
}
.doc-pager .title {
  color: var(--rob-blue);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Right TOC */
.doc-toc {
  position: sticky;
  top: 76px;
  font-size: 0.82rem;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  padding-left: 1.2rem;
  border-left: 1px solid var(--rob-line);
}
.doc-toc__title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--md-default-fg-color--lighter);
  margin: 0 0 0.7rem;
}
.doc-toc ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 1px; }
.doc-toc a {
  display: block;
  padding: 0.3rem 0.4rem;
  border-radius: 4px;
  color: var(--md-default-fg-color--light);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 0.6rem;
  margin-left: -0.6rem;
  transition: color 0.12s ease, border-color 0.12s ease;
}
.doc-toc a:hover { color: var(--rob-blue); }
.doc-toc a.active {
  color: var(--rob-blue);
  border-left-color: var(--rob-blue);
  font-weight: 600;
}
.doc-toc li.lvl-3 a { padding-left: 1.3rem; font-size: 0.78rem; }