/*
 * Aspen FlowSim interface layer
 * Desktop productivity styling derived from the installed apple-design skill.
 * This file is intentionally presentation-only: API paths, payloads, CAD geometry,
 * topology rules, and editor behavior remain owned by their existing modules.
 */

:root {
  color-scheme: light;
  --ui-accent: #007aff;
  --ui-accent-hover: #0068d9;
  --ui-accent-soft: #e8f2ff;
  --ui-green: #248a3d;
  --ui-red: #d70015;
  --ui-orange: #a05a00;
  --ui-bg: #f5f5f7;
  --ui-surface: rgba(255, 255, 255, .86);
  --ui-surface-solid: #ffffff;
  --ui-surface-raised: #fbfbfd;
  --ui-fill: rgba(118, 118, 128, .10);
  --ui-fill-hover: rgba(118, 118, 128, .16);
  --ui-fill-pressed: rgba(118, 118, 128, .22);
  --ui-border: rgba(60, 60, 67, .18);
  --ui-border-strong: rgba(60, 60, 67, .30);
  --ui-text: #1d1d1f;
  --ui-text-secondary: #5f5f65;
  --ui-text-tertiary: #77777e;
  --ui-code-bg: #1c1c1e;
  --ui-code-text: #f2f2f7;
  --ui-shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);
  --ui-shadow-md: 0 8px 28px rgba(0, 0, 0, .08);
  --ui-radius-sm: 6px;
  --ui-radius: 8px;
  --ui-font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", "Microsoft YaHei", sans-serif;
  --ui-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

html {
  min-width: 320px;
  background: var(--ui-bg);
  color: var(--ui-text);
  font-family: var(--ui-font);
  font-size: 16px;
  text-rendering: optimizeLegibility;
}

*, *::before, *::after { letter-spacing: 0 !important; }
body { margin: 0; overflow-x: clip; background: var(--ui-bg); color: var(--ui-text); font-family: var(--ui-font); }
button, input, select, textarea { font: inherit; }
a, button, input, summary, [role="tab"] { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible,
textarea:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid rgba(0, 122, 255, .42) !important;
  outline-offset: 2px !important;
}
::selection { background: rgba(0, 122, 255, .20); color: var(--ui-text); }

/* Shared window chrome */
.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--ui-border);
  background: rgba(250, 250, 252, .82);
  box-shadow: none;
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
}

nav.site-nav,
body:has(.stream-interface) nav.site-nav,
body:has(.cad-preview) nav.site-nav {
  display: grid;
  grid-template-columns: minmax(190px, 1fr) auto minmax(190px, 1fr);
  align-items: center;
  width: min(100%, 1440px);
  min-height: 64px;
  margin: 0 auto;
  padding: 0 28px;
  border: 0;
  background: transparent;
  box-shadow: none;
}

nav.site-nav .site-brand,
body:has(.stream-interface) nav.site-nav .site-brand,
body:has(.cad-preview) nav.site-nav .site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  justify-self: start;
  min-height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ui-text);
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
}

nav.site-nav .site-brand::before,
body:has(.stream-interface) nav.site-nav .site-brand::before,
body:has(.cad-preview) nav.site-nav .site-brand::before { display: none; }
nav.site-nav .site-brand b,
body:has(.stream-interface) nav.site-nav .site-brand b,
body:has(.cad-preview) nav.site-nav .site-brand b { color: var(--ui-accent); font-weight: 700; }

.brand-mark {
  display: inline-grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 0;
  border-radius: 8px;
  background: var(--ui-accent);
  box-shadow: var(--ui-shadow-sm);
  color: #fff;
  font: 700 10px/1 var(--ui-font);
}

nav.site-nav .nav-cluster,
body:has(.stream-interface) nav.site-nav .nav-cluster,
body:has(.cad-preview) nav.site-nav .nav-cluster {
  display: flex;
  grid-column: auto;
  grid-row: auto;
  align-items: center;
  justify-self: center;
  gap: 2px;
  min-height: 0;
  padding: 4px;
  border: 1px solid rgba(60, 60, 67, .10);
  border-radius: var(--ui-radius);
  background: rgba(118, 118, 128, .08);
  box-shadow: none;
  scrollbar-width: none;
}
nav.site-nav .nav-cluster::-webkit-scrollbar,
body:has(.stream-interface) nav.site-nav .nav-cluster::-webkit-scrollbar,
body:has(.cad-preview) nav.site-nav .nav-cluster::-webkit-scrollbar { display: none; }

nav.site-nav .nav-cluster a,
body:has(.stream-interface) nav.site-nav .nav-cluster a,
body:has(.cad-preview) nav.site-nav .nav-cluster a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 13px;
  border: 0;
  border-radius: var(--ui-radius-sm);
  background: transparent;
  color: var(--ui-text-secondary);
  font-size: 13px;
  font-weight: 550;
  text-decoration: none;
  white-space: nowrap;
}

nav.site-nav .nav-cluster a:hover,
body:has(.stream-interface) nav.site-nav .nav-cluster a:hover,
body:has(.cad-preview) nav.site-nav .nav-cluster a:hover {
  border: 0;
  background: rgba(255, 255, 255, .72);
  color: var(--ui-text);
  text-decoration: none;
}

nav.site-nav .nav-cluster a.active,
body:has(.stream-interface) nav.site-nav .nav-cluster a.active,
body:has(.cad-preview) nav.site-nav .nav-cluster a.active {
  border: 0;
  background: var(--ui-surface-solid);
  box-shadow: 0 1px 3px rgba(0, 0, 0, .10);
  color: var(--ui-text);
  font-weight: 650;
}

.site-nav-utility { justify-self: end; }
nav.site-nav .service-status,
nav.site-nav .page-context,
body:has(.stream-interface) nav.site-nav .page-context,
body:has(.cad-preview) nav.site-nav .page-context {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0;
  color: var(--ui-text-secondary);
  font: 600 11px/1.2 var(--ui-mono);
  white-space: nowrap;
}
nav.site-nav .service-status::before {
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--ui-green);
  box-shadow: 0 0 0 3px rgba(36, 138, 61, .12);
  content: "";
}

.site-main { width: min(100%, 1440px); min-height: 55vh; margin: 0 auto; padding: 0 28px 72px; }
h1, h2, h3, p { letter-spacing: 0; }
h1 { color: var(--ui-text); font-size: 52px; line-height: 1.08; font-weight: 700; }
h2 { color: var(--ui-text); font-size: 28px; line-height: 1.16; font-weight: 650; }
h3 { color: var(--ui-text); font-weight: 650; }
p { color: var(--ui-text-secondary); }
code, pre { font-family: var(--ui-mono); }

.eyebrow {
  margin-bottom: 12px;
  color: var(--ui-accent);
  font: 650 11px/1.3 var(--ui-mono);
  text-transform: none;
}

/* Buttons and links */
.button-link, .landing-action, .action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--ui-radius);
  background: var(--ui-surface-solid);
  color: var(--ui-text);
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
}
.button-link:hover, .landing-action:hover, .action:hover {
  border-color: var(--ui-border-strong);
  background: var(--ui-fill-hover);
  color: var(--ui-text);
  text-decoration: none;
}
.button-link.primary, .landing-action.primary, .action.primary {
  border-color: var(--ui-accent);
  background: var(--ui-accent);
  color: #fff;
}
.button-link.primary:hover, .landing-action.primary:hover, .action.primary:hover {
  border-color: var(--ui-accent-hover);
  background: var(--ui-accent-hover);
  color: #fff;
}

/* Overview */
.landing-overview { width: 100vw; margin: 0 0 -72px calc(50% - 50vw); }
.landing-hero {
  min-height: min(540px, calc(100svh - 190px));
  background: #171719;
}
.landing-hero::after { background: rgba(0, 0, 0, .46); }
.landing-hero-copy {
  width: min(620px, calc(100% - 56px));
  margin-left: max(28px, calc((100vw - 1440px) / 2 + 28px));
  padding: 122px 0 88px;
}
.landing-hero .eyebrow { margin-bottom: 14px; color: #9dccff; }
.landing-hero h1 { max-width: 620px; color: #fff; font-size: 64px; line-height: 1.02; font-weight: 700; }
.landing-hero-copy > p:not(.eyebrow) { max-width: 560px; margin-top: 22px; color: rgba(255,255,255,.86); font-size: 17px; line-height: 1.65; }
.landing-actions { gap: 10px; margin-top: 28px; }
.landing-action { border-color: rgba(255,255,255,.52); background: rgba(20,20,22,.28); color: #fff; -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); }
.landing-action:hover { border-color: rgba(255,255,255,.80); background: rgba(255,255,255,.16); color: #fff; }
.landing-action.primary { border-color: #fff; background: #fff; color: #1d1d1f; }
.landing-action.primary:hover { border-color: #f2f2f7; background: #f2f2f7; color: #1d1d1f; }
.landing-hero-meta { right: max(28px, calc((100vw - 1440px) / 2 + 28px)); bottom: 24px; color: rgba(255,255,255,.76); }
.landing-hero-meta span { color: #9dccff; font: 650 10px/1 var(--ui-mono); }
.landing-hero-meta b { font: 600 11px/1 var(--ui-mono); }

.landing-statement { gap: 48px 72px; width: min(100%, 1440px); padding: 96px 28px 88px; }
.landing-statement h2, .landing-feature h2, .landing-platform h2 { color: var(--ui-text); font-size: 44px; line-height: 1.08; font-weight: 650; }
.landing-statement > p { color: var(--ui-text-secondary); font-size: 16px; line-height: 1.75; }
.landing-statement dl { border-top-color: var(--ui-border); }
.landing-statement dl div { border-right-color: var(--ui-border); }
.landing-statement dt { color: var(--ui-text-secondary); font-size: 13px; }
.landing-statement dd { color: var(--ui-text); font-size: 38px; font-weight: 700; }

.landing-feature { background: #ececf0; }
.landing-feature-reverse { background: var(--ui-surface-solid); }
.landing-feature-copy { max-width: 560px; padding: 84px 8vw; }
.landing-feature-copy > p:not(.eyebrow) { color: var(--ui-text-secondary); font-size: 15px; line-height: 1.75; }
.text-link { color: var(--ui-accent); font-size: 13px; font-weight: 650; }
.text-link:hover { color: var(--ui-accent-hover); }
.landing-feature figure { background: #d8d8dc; }
.landing-feature figcaption { background: #202024; color: #d2d2d7; }

.landing-platform { width: min(100%, 1440px); padding: 88px 28px 96px; }
.landing-platform-grid { gap: 12px; border: 0; }
.landing-platform-grid a {
  min-height: 250px;
  padding: 24px;
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius);
  background: var(--ui-surface-solid);
  color: var(--ui-text);
  box-shadow: var(--ui-shadow-sm);
}
.landing-platform-grid a:last-child { border-right: 1px solid var(--ui-border); }
.landing-platform-grid a:hover { border-color: rgba(0,122,255,.42); background: var(--ui-accent-soft); }
.landing-platform-grid span, .landing-platform-grid b { color: var(--ui-accent); }
.landing-platform-grid h3 { color: var(--ui-text); font-size: 24px; }
.landing-platform-grid p { color: var(--ui-text-secondary); }
.landing-endcap { min-height: 330px; background: #1d1d1f; }
.landing-endcap .eyebrow { color: #9dccff; }
.landing-endcap h2 { color: #f5f5f7; font-size: 44px; line-height: 1.08; }
.landing-endcap .landing-action.light { border-color: rgba(255,255,255,.6); background: transparent; color: #fff; }

/* Resource and documentation pages */
.page-intro {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(320px, .75fr);
  align-items: end;
  gap: 48px;
  margin: 0;
  padding: 72px 0 52px;
  border: 0;
  border-bottom: 1px solid var(--ui-border);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.page-intro h1 { margin: 0; color: var(--ui-text); font-size: 52px; line-height: 1.06; font-weight: 700; }
.page-intro .lead { max-width: 620px; margin: 0; color: var(--ui-text-secondary); font-size: 16px; line-height: 1.7; }

.api-rail { gap: 10px; margin: 24px 0 0; border: 0; background: transparent; }
.api-rail > div {
  min-height: 142px;
  padding: 18px;
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius);
  background: var(--ui-surface-solid);
  box-shadow: var(--ui-shadow-sm);
}
.api-rail > div + div { border-left: 1px solid var(--ui-border); }
.api-rail strong { color: var(--ui-accent); font: 650 11px/1.2 var(--ui-mono); }
.api-rail code { color: var(--ui-text); }
.api-rail p { color: var(--ui-text-secondary); }

.library-section { margin-top: 56px; }
.library-heading { border-bottom-color: var(--ui-border); }
.library-heading h2 { color: var(--ui-text); font-size: 28px; }
.library-heading p { color: var(--ui-text-tertiary); font-family: var(--ui-mono); }
.resource-grid { gap: 12px; }
.resource-card {
  min-height: 250px;
  padding: 16px;
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius);
  background: var(--ui-surface-solid);
  box-shadow: var(--ui-shadow-sm);
}
.resource-card:hover { border-color: rgba(0,122,255,.42); background: var(--ui-surface-raised); }
.resource-card figure { border-color: var(--ui-border); border-radius: var(--ui-radius-sm); background: #f5f5f7; }
.resource-card h3 { color: var(--ui-text); }
.resource-card code, .resource-card p { color: var(--ui-text-secondary); }

.docs-layout { gap: 18px; margin-top: 28px; }
.panel, .sidebar {
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius);
  background: var(--ui-surface-solid);
  box-shadow: var(--ui-shadow-sm);
}
.panel { padding: 22px; margin-bottom: 14px; }
.panel h2, .sidebar h2 { color: var(--ui-text); font-size: 20px; }
.panel h3, .sidebar h3 { color: var(--ui-text); }
.panel p, .panel li, .sidebar p, .sidebar li { color: var(--ui-text-secondary); }
.endpoint { grid-template-columns: 74px minmax(0, 1fr); border-top-color: var(--ui-border); }
.method { color: var(--ui-green); font-family: var(--ui-mono); }
pre { border: 1px solid rgba(255,255,255,.08); border-radius: var(--ui-radius); background: var(--ui-code-bg); color: var(--ui-code-text); }
code { color: var(--ui-text); }
.sidebar { top: 82px; padding: 18px; }
.sidebar .quick-link { min-height: 36px; border-top-color: var(--ui-border); color: var(--ui-accent); }
.badge { border-radius: 5px; background: var(--ui-accent-soft); color: #004f9e; }

/* CAD desktop workspace */
body:has(.cad-preview) { background: var(--ui-bg); color: var(--ui-text); }
body:has(.cad-preview) main { width: 100%; padding: 18px 22px 40px; }
body:has(.cad-preview) main > header { margin: 0; }
body:has(.cad-preview) .site-header { margin: 0; }
body:has(.cad-preview) .cad-preview {
  overflow: hidden;
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--ui-radius);
  background: var(--ui-surface-solid);
  box-shadow: var(--ui-shadow-md);
}
body:has(.cad-preview) .cad-preview-workspace {
  grid-template-columns: 224px minmax(0, 1fr);
  border-bottom: 1px solid var(--ui-border);
  background: var(--ui-surface-solid);
}
body:has(.cad-preview) .cad-catalog {
  border-right: 1px solid var(--ui-border);
  background: #f7f7f9;
}
body:has(.cad-preview) .cad-catalog-toolbar {
  min-height: 68px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--ui-border);
  background: rgba(250,250,252,.90);
  box-shadow: none;
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}
body:has(.cad-preview) .cad-catalog-heading { min-width: 0; padding: 0; }
body:has(.cad-preview) .cad-catalog-heading::after { display: none; }
body:has(.cad-preview) .cad-catalog-kicker { color: var(--ui-text-tertiary); font: 600 9px/1.25 var(--ui-mono); }
body:has(.cad-preview) .cad-catalog-heading h2 { color: var(--ui-text); font-size: 17px; font-weight: 650; }
body:has(.cad-preview) .cad-preview-tools { gap: 5px; padding-left: 0; }
body:has(.cad-preview) .cad-preview-tools button,
body:has(.cad-preview) .cad-component-menu summary {
  min-width: 32px;
  height: 32px;
  padding: 0 9px;
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--ui-radius-sm);
  background: var(--ui-surface-solid);
  box-shadow: none;
  color: var(--ui-text);
  text-shadow: none;
}
body:has(.cad-preview) .cad-preview-tools button:hover:not(:disabled),
body:has(.cad-preview) .cad-component-menu summary:hover { border-color: rgba(0,122,255,.42); background: var(--ui-accent-soft); }
body:has(.cad-preview) .cad-preview-tools button[aria-pressed="true"],
body:has(.cad-preview) .cad-component-menu[open] summary {
  border-color: var(--ui-accent);
  background: var(--ui-accent);
  color: #fff;
  text-shadow: none;
}
body:has(.cad-preview) .cad-preview-tools button[data-toggle-occupancy],
body:has(.cad-preview) .cad-preview-tools button[data-toggle-ports] { color: var(--ui-text-secondary); font: 600 11px/1 var(--ui-font); }
body:has(.cad-preview) .cad-preview-tools button[data-toggle-occupancy][aria-pressed="true"],
body:has(.cad-preview) .cad-preview-tools button[data-toggle-ports][aria-pressed="true"] { color: #fff; }
body:has(.cad-preview) .cad-preview-tools button[data-toggle-occupancy][aria-pressed="true"] {
  border-color: #c58a00;
  background: #fff4cc;
  color: #6e4900;
}
body:has(.cad-preview) .cad-component-popover {
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--ui-radius);
  background: rgba(255,255,255,.96);
  box-shadow: var(--ui-shadow-md);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}

body:has(.cad-preview) .cad-category-tabs { gap: 3px; padding: 8px; border-bottom: 1px solid var(--ui-border); background: transparent; }
body:has(.cad-preview) .cad-category-tab {
  position: relative;
  min-height: 36px;
  padding: 0 10px 0 13px;
  border: 1px solid transparent;
  border-radius: var(--ui-radius-sm);
  background: transparent;
}
body:has(.cad-preview) .cad-category-tab strong { color: var(--ui-text-secondary); font-size: 13px; font-weight: 550; }
body:has(.cad-preview) .cad-category-tab:hover { background: var(--ui-fill); }
body:has(.cad-preview) .cad-category-tab[aria-selected="true"] { border-color: rgba(0,122,255,.18); background: var(--ui-accent-soft); }
body:has(.cad-preview) .cad-category-tab[aria-selected="true"]::before {
  position: absolute;
  top: 7px;
  bottom: 7px;
  left: 4px;
  width: 3px;
  border-radius: 2px;
  background: var(--ui-accent);
  content: "";
}
body:has(.cad-preview) .cad-category-tab[aria-selected="true"] strong { color: #0056ad; font-weight: 650; }
body:has(.cad-preview) .cad-subcategory-tabs { gap: 5px; padding: 8px; border-color: var(--ui-border); }
body:has(.cad-preview) .cad-subcategory-tab {
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--ui-radius-sm);
  background: var(--ui-surface-solid);
  color: var(--ui-text-secondary);
}
body:has(.cad-preview) .cad-subcategory-tab[aria-selected="true"] { border-color: var(--ui-accent); background: var(--ui-accent); color: #fff; }
body:has(.cad-preview) .cad-template-list { gap: 7px; padding: 8px; }
body:has(.cad-preview) .cad-template-button {
  grid-template-columns: 56px minmax(0, 1fr);
  grid-template-rows: auto auto auto;
  align-content: center;
  align-items: center;
  gap: 3px 10px;
  min-height: 96px;
  padding: 10px;
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius);
  background: var(--ui-surface-solid);
  box-shadow: none;
}
body:has(.cad-preview) .cad-template-button:hover { border-color: rgba(0,122,255,.42); background: var(--ui-surface-raised); }
body:has(.cad-preview) .cad-template-button[aria-pressed="true"] { border-color: var(--ui-accent); background: var(--ui-accent-soft); box-shadow: inset 3px 0 var(--ui-accent); }
body:has(.cad-preview) .cad-template-thumb { grid-row: 1 / 4; width: 56px; height: 56px; border-color: var(--ui-border); border-radius: 5px; background: #f5f5f7; }
body:has(.cad-preview) .cad-template-module { grid-column: 2; color: var(--ui-accent); font-family: var(--ui-mono); }
body:has(.cad-preview) .cad-template-button strong { grid-column: 2; color: var(--ui-text); }
body:has(.cad-preview) .cad-template-meta { grid-column: 2; color: var(--ui-text-tertiary); font-family: var(--ui-mono); }

body:has(.cad-preview) .cad-stage-column { border: 0; background: var(--ui-surface-solid); box-shadow: none; }
body:has(.cad-preview) .cad-stage { border: 0; background: #111820; }
body:has(.cad-preview) .cad-detail-row { border-top: 1px solid var(--ui-border); background: var(--ui-surface-solid); }
body:has(.cad-preview) .cad-layer-panel { border-right-color: var(--ui-border); }
body:has(.cad-preview) .cad-picker-label { color: var(--ui-text); font-size: 13px; font-weight: 650; }
body:has(.cad-preview) .cad-layer-row { min-height: 32px; border-radius: var(--ui-radius-sm); color: var(--ui-text); }
body:has(.cad-preview) .cad-layer-row:hover { background: var(--ui-fill); }
body:has(.cad-preview) .cad-layer-row code,
body:has(.cad-preview) .cad-entity-facts dd { color: var(--ui-text); }
body:has(.cad-preview) .cad-layer-row small,
body:has(.cad-preview) .cad-entity-panel,
body:has(.cad-preview) .cad-entity-facts dt { color: var(--ui-text-secondary); }

/* Port editor and status surfaces */
body:has(.cad-preview) .cad-port-editor,
body:has(.cad-preview) .cad-port-binding-picker {
  border-color: var(--ui-border);
  background: rgba(248,248,250,.96);
  color: var(--ui-text);
  box-shadow: none;
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}
body:has(.cad-preview) .cad-port-editor-head,
body:has(.cad-preview) .cad-port-modebar,
body:has(.cad-preview) .cad-port-editor-body { border-color: var(--ui-border); background: transparent; }
body:has(.cad-preview) .cad-port-editor button {
  min-height: 30px;
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--ui-radius-sm);
  background: var(--ui-surface-solid);
  color: var(--ui-text);
  box-shadow: none;
  text-shadow: none;
}
body:has(.cad-preview) .cad-port-editor button:hover:not(:disabled) { border-color: rgba(0,122,255,.42); background: var(--ui-accent-soft); }
body:has(.cad-preview) .cad-port-editor button[aria-pressed="true"],
body:has(.cad-preview) .cad-port-editor button.primary { border-color: var(--ui-accent); background: var(--ui-accent); color: #fff; }
body:has(.cad-preview) .cad-port-actions [data-port-save-state] { color: var(--ui-text-secondary); }
body:has(.cad-preview) .cad-port-binding-picker header { border-right-color: var(--ui-border); background: rgba(255,255,255,.55); }
body:has(.cad-preview) .cad-port-binding-picker header > span,
body:has(.cad-preview) .cad-port-binding-picker p { color: var(--ui-text-secondary); }
body:has(.cad-preview) .cad-port-binding-picker header strong,
body:has(.cad-preview) .cad-port-binding-picker p strong { color: var(--ui-text); }
body:has(.cad-preview) .cad-port-binding-picker header b { border-color: rgba(160,90,0,.32); background: #fff7df; color: #7a4500; }
.cad-port-login {
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--ui-radius);
  background: rgba(248,248,250,.98);
  color: var(--ui-text);
  box-shadow: 0 20px 70px rgba(0,0,0,.22);
}
.cad-port-login::backdrop { background: rgba(0,0,0,.28); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); }
.cad-port-login header { border-color: var(--ui-border); background: transparent; }
.cad-port-login input { min-height: 34px; border-color: var(--ui-border-strong); border-radius: var(--ui-radius-sm); background: var(--ui-surface-solid); color: var(--ui-text); }
.cad-port-login button { min-height: 32px; border-color: var(--ui-border-strong); border-radius: var(--ui-radius-sm); background: var(--ui-surface-solid); color: var(--ui-text); }
.cad-port-login button.primary { border-color: var(--ui-accent); background: var(--ui-accent); color: #fff; }

/* Stream data workbench */
.stream-interface { margin-top: 18px; border: 1px solid var(--ui-border-strong); border-radius: var(--ui-radius); background: var(--ui-surface-solid); box-shadow: var(--ui-shadow-md); }
body:has(.stream-interface) main.site-main { width: min(100%, 1440px); margin: 0 auto; padding: 18px 28px 72px; }
.stream-ribbon { min-height: 80px; padding: 14px 18px; border-bottom: 1px solid var(--ui-border); background: rgba(250,250,252,.92); color: var(--ui-text); }
.stream-ribbon p { color: var(--ui-text-tertiary); font-family: var(--ui-mono); }
.stream-ribbon h1 { color: var(--ui-text); font-size: 26px; line-height: 1.15; }
.stream-ribbon-state { color: var(--ui-green); font-family: var(--ui-mono); }
.stream-summary { gap: 28px; padding: 32px; border-bottom-color: var(--ui-border); background: var(--ui-surface-solid); }
.stream-summary-copy h2 { color: var(--ui-text); font-size: 30px; }
.stream-summary-copy p { color: var(--ui-text-secondary); }
.stream-endpoints { gap: 8px; }
.stream-endpoint-link { min-height: 48px; border: 1px solid var(--ui-border); border-radius: var(--ui-radius-sm); background: var(--ui-surface-raised); }
.stream-endpoint-link:hover { border-color: rgba(0,122,255,.42); background: var(--ui-accent-soft); }
.stream-endpoint-link b { color: var(--ui-green); }
.stream-endpoint-link code { color: var(--ui-text); }
.stream-content { background: #ededf1; }
.stream-preview-panel { overflow: hidden; border: 1px solid var(--ui-border); border-radius: var(--ui-radius); background: var(--ui-surface-solid); box-shadow: var(--ui-shadow-sm); }
.stream-preview-toolbar { border-bottom-color: var(--ui-border); background: var(--ui-surface-raised); }
.stream-preview-toolbar p, .stream-preview-toolbar span { color: var(--ui-text-tertiary); }
.stream-preview-toolbar h2 { color: var(--ui-text); }
.stream-table-viewport { background: #f5f5f7; }
.stream-minimal-flow { border-color: var(--ui-border); border-radius: var(--ui-radius); background: var(--ui-surface-solid); }
.stream-minimal-flow span { border-color: var(--ui-border); border-radius: var(--ui-radius-sm); background: var(--ui-surface-raised); color: var(--ui-text); }
.stream-minimal-flow b { color: var(--ui-accent); }
.stream-minimal-flow i { color: var(--ui-text-secondary); }

/* Footer */
.site-footer { border-top: 1px solid var(--ui-border); background: #ececf0; color: var(--ui-text); }
.site-footer-grid { gap: 40px; width: min(100%, 1440px); padding: 48px 28px 40px; }
.site-footer h2 { color: var(--ui-text); font-size: 13px; }
.site-footer a { color: var(--ui-text-secondary); }
.site-footer a:hover { color: var(--ui-accent); }
.site-footer-wordmark { color: var(--ui-text) !important; }
.site-footer-wordmark span { border: 0; border-radius: 7px; background: var(--ui-accent); color: #fff; }
.site-footer-brand > p, .site-footer section > p { color: var(--ui-text-secondary); }
.site-footer .footer-inline-link { color: var(--ui-accent); }
.footer-status { color: var(--ui-green) !important; }
.footer-status i { background: var(--ui-green); }
.site-footer-bottom { width: min(100%, 1440px); padding: 15px 28px; border-top-color: var(--ui-border); color: var(--ui-text-tertiary); font-family: var(--ui-mono); }

@media (max-width: 980px) {
  nav.site-nav, body:has(.stream-interface) nav.site-nav, body:has(.cad-preview) nav.site-nav { grid-template-columns: 1fr auto; min-height: 58px; padding: 0 20px; }
  nav.site-nav .nav-cluster, body:has(.stream-interface) nav.site-nav .nav-cluster, body:has(.cad-preview) nav.site-nav .nav-cluster {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-self: stretch;
    justify-content: flex-start;
    min-height: 44px;
    margin: 0 -20px;
    padding: 4px 20px 6px;
    overflow-x: auto;
    border-width: 1px 0 0;
    border-radius: 0;
    background: transparent;
  }
  nav.site-nav .nav-cluster a, body:has(.stream-interface) nav.site-nav .nav-cluster a, body:has(.cad-preview) nav.site-nav .nav-cluster a { min-height: 34px; }
  .site-main { padding-inline: 20px; }
  .landing-overview { margin-left: -20px; margin-right: -20px; }
  .landing-hero h1 { font-size: 52px; }
  .landing-statement h2, .landing-feature h2, .landing-platform h2, .landing-endcap h2 { font-size: 38px; }
  .landing-feature-copy { padding: 64px 40px; }
  .page-intro { grid-template-columns: 1fr; gap: 22px; padding: 54px 0 40px; }
  .page-intro h1 { font-size: 44px; }
  body:has(.cad-preview) main { padding: 14px 14px 32px; }
  body:has(.cad-preview) .cad-preview-workspace { grid-template-columns: 184px minmax(0, 1fr); }
  .site-footer-grid { padding-inline: 24px; }
  .site-footer-bottom { padding-inline: 24px; }
}

@media (max-width: 680px) {
  nav.site-nav, body:has(.stream-interface) nav.site-nav, body:has(.cad-preview) nav.site-nav { padding-inline: 14px; }
  nav.site-nav .nav-cluster, body:has(.stream-interface) nav.site-nav .nav-cluster, body:has(.cad-preview) nav.site-nav .nav-cluster { margin-inline: -14px; padding-inline: 14px; }
  .site-main { padding: 0 14px 48px; }
  .landing-overview { margin: 0 -14px -48px; }
  .landing-hero { min-height: min(480px, calc(100svh - 170px)); }
  .landing-hero-copy { width: calc(100% - 40px); margin-left: 20px; padding: 92px 0 74px; }
  .landing-hero h1 { font-size: 40px; }
  .landing-hero-copy > p:not(.eyebrow) { font-size: 15px; }
  .landing-statement { padding: 56px 20px; }
  .landing-statement h2, .landing-feature h2, .landing-platform h2, .landing-endcap h2 { font-size: 34px; }
  .landing-feature-copy { padding: 52px 20px; }
  .landing-platform { padding: 56px 20px; }
  .landing-platform-grid { grid-template-columns: 1fr; }
  .landing-platform-grid a, .landing-platform-grid a:last-child { border: 1px solid var(--ui-border); }
  .page-intro { padding-top: 44px; }
  .page-intro h1 { font-size: 36px; }
  .api-rail { grid-template-columns: 1fr; }
  .docs-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; grid-row: 1; }
  body:has(.cad-preview) main { padding: 10px 8px 24px; }
  body:has(.cad-preview) .cad-preview:not([data-port-fullscreen="true"]) .cad-preview-workspace { grid-template-columns: 1fr; }
  body:has(.cad-preview) .cad-preview:not([data-port-fullscreen="true"]) .cad-catalog {
    grid-template-rows: auto auto auto;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--ui-border);
  }
  body:has(.cad-preview) .cad-catalog-toolbar { display: grid; min-height: 0; }
  body:has(.cad-preview) .cad-preview-tools { justify-content: flex-start; }
  body:has(.cad-preview) .cad-preview:not([data-port-fullscreen="true"]) .cad-category-tabs {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    padding: 6px 8px;
    scrollbar-width: none;
  }
  body:has(.cad-preview) .cad-preview:not([data-port-fullscreen="true"]) .cad-category-tabs::-webkit-scrollbar { display: none; }
  body:has(.cad-preview) .cad-preview:not([data-port-fullscreen="true"]) .cad-category-tab {
    flex: 0 0 auto;
    width: auto;
    min-height: 34px;
    padding: 0 11px;
  }
  body:has(.cad-preview) .cad-preview:not([data-port-fullscreen="true"]) .cad-category-tab[aria-selected="true"]::before { display: none; }
  body:has(.cad-preview) .cad-preview:not([data-port-fullscreen="true"]) .cad-template-list {
    display: flex;
    gap: 7px;
    overflow-x: auto;
    padding: 7px 8px 9px;
    scrollbar-width: none;
  }
  body:has(.cad-preview) .cad-preview:not([data-port-fullscreen="true"]) .cad-template-list::-webkit-scrollbar { display: none; }
  body:has(.cad-preview) .cad-preview:not([data-port-fullscreen="true"]) .cad-template-button {
    display: grid;
    flex: 0 0 210px;
    min-height: 82px;
    padding: 8px;
  }
  body:has(.cad-preview) .cad-preview:not([data-port-fullscreen="true"]) .cad-template-thumb { display: block; width: 52px; height: 52px; }
  body:has(.cad-preview) .cad-preview:not([data-port-fullscreen="true"]) .cad-stage-column { grid-column: 1; width: 100%; }
  body:has(.cad-preview) .cad-detail-row { grid-template-columns: 1fr; }
  .stream-summary { grid-template-columns: 1fr; padding: 22px; }
  .stream-content { padding: 14px; }
  body:has(.stream-interface) main.site-main { padding: 10px 8px 48px; }
  .stream-minimal-flow { flex-wrap: wrap; }
  .site-footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 20px; padding: 38px 20px 32px; }
  .site-footer-brand, .site-footer-grid > section:last-child { grid-column: 1 / -1; }
  .site-footer-bottom { align-items: flex-start; flex-direction: column; padding: 14px 20px; }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --ui-accent: #0a84ff;
    --ui-accent-hover: #409cff;
    --ui-accent-soft: rgba(10, 132, 255, .16);
    --ui-green: #30d158;
    --ui-red: #ff453a;
    --ui-orange: #ff9f0a;
    --ui-bg: #161617;
    --ui-surface: rgba(36, 36, 38, .86);
    --ui-surface-solid: #242426;
    --ui-surface-raised: #2c2c2e;
    --ui-fill: rgba(120, 120, 128, .18);
    --ui-fill-hover: rgba(120, 120, 128, .26);
    --ui-fill-pressed: rgba(120, 120, 128, .34);
    --ui-border: rgba(235, 235, 245, .14);
    --ui-border-strong: rgba(235, 235, 245, .26);
    --ui-text: #f5f5f7;
    --ui-text-secondary: #b0b0b6;
    --ui-text-tertiary: #8e8e93;
    --ui-shadow-sm: 0 1px 2px rgba(0,0,0,.22);
    --ui-shadow-md: 0 12px 34px rgba(0,0,0,.32);
  }
  .site-header { background: rgba(28,28,30,.82); }
  nav.site-nav .nav-cluster a:hover,
  body:has(.cad-preview) nav.site-nav .nav-cluster a:hover { background: rgba(255,255,255,.08); }
  .landing-feature { background: #232326; }
  .landing-feature-reverse { background: #1c1c1e; }
  .landing-platform-grid a:hover { background: var(--ui-accent-soft); }
  .resource-card figure, body:has(.cad-preview) .cad-template-thumb, .stream-table-viewport { background: #1c1c1e; }
  .badge { color: #9dccff; }
  body:has(.cad-preview) .cad-catalog { background: #1f1f21; }
  body:has(.cad-preview) .cad-catalog-toolbar,
  body:has(.cad-preview) .cad-port-editor,
  body:has(.cad-preview) .cad-port-binding-picker { background: rgba(36,36,38,.94); }
  body:has(.cad-preview) .cad-category-tab[aria-selected="true"] strong { color: #9dccff; }
  body:has(.cad-preview) .cad-preview-tools button[data-toggle-occupancy][aria-pressed="true"] { border-color: #8d650d; background: rgba(255,159,10,.18); color: #ffd28a; }
  body:has(.cad-preview) .cad-component-popover { background: rgba(44,44,46,.97); }
  body:has(.cad-preview) .cad-port-binding-picker header { background: rgba(255,255,255,.04); }
  body:has(.cad-preview) .cad-port-binding-picker header b { background: rgba(255,159,10,.12); color: #ffd28a; }
  .cad-port-login { background: rgba(36,36,38,.98); }
  .stream-content, .site-footer { background: #1c1c1e; }
}

@media (prefers-contrast: more) {
  :root { --ui-border: rgba(60,60,67,.40); --ui-border-strong: rgba(60,60,67,.65); }
  a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible,
  textarea:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline-width: 4px !important; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}