/* Market Bender shared presentation layer
 * Authority colours are semantic: model, human, risk, exchange, identity, platform.
 */

:root {
  color-scheme: dark;
  --font-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --c-model: #4cc2ff;
  --c-human: #f6b042;
  --c-risk: #ff7474;
  --c-exchange: #2fd9a2;
  --c-identity: #b58cff;
  --c-platform: #9aabc0;

  --bg: #0a0e15;
  --bg-elev: #111722;
  --bg-elev-2: #161e2b;
  --bg-overlay: rgb(5 8 13 / 78%);
  --line: rgb(255 255 255 / 9%);
  --line-strong: rgb(255 255 255 / 17%);
  --text: #e7eef7;
  --text-dim: #a8b7ca;
  --text-faint: #8090a8;
  --focus: #8bd8ff;
  --shadow: 0 24px 60px -30px rgb(0 0 0 / 82%);

  --radius-xs: 6px;
  --radius-sm: 9px;
  --radius: 14px;
  --radius-lg: 20px;
  --sidebar-width: 272px;
  --content-width: 1180px;
  --page-pad: clamp(16px, 3vw, 32px);
  --header-height: 64px;
}

:root[data-theme="light"] {
  color-scheme: light;
  --c-model: #006c9f;
  --c-human: #8a5700;
  --c-risk: #b52e38;
  --c-exchange: #087855;
  --c-identity: #6e4cb0;
  --c-platform: #4d6077;
  --bg: #f4f6fa;
  --bg-elev: #ffffff;
  --bg-elev-2: #edf1f6;
  --bg-overlay: rgb(20 27 39 / 55%);
  --line: rgb(15 23 42 / 11%);
  --line-strong: rgb(15 23 42 / 21%);
  --text: #0e1626;
  --text-dim: #41516a;
  --text-faint: #5f7088;
  --focus: #006c9f;
  --shadow: 0 24px 50px -34px rgb(15 23 42 / 34%);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-padding-top: calc(var(--header-height) + 20px);
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 0%, color-mix(in srgb, var(--c-model) 8%, transparent), transparent 38rem),
    var(--bg);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open,
body.palette-open {
  overflow: hidden;
}

[hidden] {
  display: none !important;
}

img,
svg {
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
select,
input[type="checkbox"],
input[type="radio"] {
  cursor: pointer;
}

a {
  color: var(--c-model);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-thickness: 2px;
}

:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 68%, transparent);
  outline-offset: 3px;
}

::selection {
  color: #061018;
  background: var(--c-model);
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--text);
  line-height: 1.18;
  letter-spacing: -0.012em;
}

h1 { font-size: clamp(1.75rem, 3vw, 2.55rem); }
h2 { font-size: clamp(1.35rem, 2vw, 1.8rem); }
h3 { font-size: 1.08rem; }
h4 { font-size: 0.98rem; }

p,
li,
dd {
  color: var(--text-dim);
}

strong,
dt {
  color: var(--text);
}

code,
pre,
kbd,
.mono {
  font-family: var(--font-mono);
}

code {
  padding: 0.12em 0.34em;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--text);
  background: var(--bg-elev-2);
  font-size: 0.88em;
}

pre {
  max-width: 100%;
  margin: 0;
  padding: 18px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: color-mix(in srgb, var(--bg) 84%, #000);
  font: 0.82rem/1.65 var(--font-mono);
  tab-size: 2;
  white-space: pre;
}

pre code {
  padding: 0;
  border: 0;
  background: transparent;
  font-size: inherit;
}

kbd {
  min-width: 1.8em;
  padding: 2px 6px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  color: var(--text-dim);
  background: var(--bg-elev-2);
  font-size: 0.72rem;
  text-align: center;
}

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

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  border: 1px solid var(--focus);
  border-radius: var(--radius-sm);
  color: var(--text);
  background: var(--bg-elev);
  box-shadow: var(--shadow);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

/* Application shell and navigation */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
}

.site-sidebar,
[data-site-nav] {
  width: var(--sidebar-width);
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elev) 92%, transparent);
}

.site-sidebar {
  position: fixed;
  z-index: 30;
  inset: 0 auto 0 0;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.site-sidebar__header,
.mobile-header {
  min-height: var(--header-height);
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 11px;
  color: #061018;
  background: linear-gradient(135deg, #4cc2ff, #2fd9a2);
  box-shadow: 0 8px 24px -12px #4cc2ff;
  font: 600 0.92rem var(--font-mono);
}

.brand-copy strong,
.brand-copy span,
.brand-copy small {
  display: block;
}

.brand-copy strong {
  font-size: 0.92rem;
}

.brand-copy span,
.brand-copy small {
  color: var(--text-faint);
  font: 0.68rem var(--font-mono);
  letter-spacing: 0.05em;
}

.site-sidebar__header,
.mobile-actions,
.sidebar-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.sidebar-meta {
  display: grid;
  gap: 8px;
  margin-top: auto;
  padding: 14px 18px 20px;
  border-top: 1px solid var(--line);
  font-size: 0.76rem;
}

.site-nav {
  display: grid;
  gap: 18px;
  padding: 16px 12px 28px;
}

.nav-group {
  display: grid;
  gap: 3px;
}

.nav-label,
.eyebrow {
  color: var(--text-faint);
  font: 500 0.68rem/1.4 var(--font-mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.nav-label {
  padding: 7px 10px 5px;
}

.nav-link {
  display: flex;
  min-height: 38px;
  align-items: center;
  gap: 9px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 0.84rem;
  text-decoration: none;
}

.nav-link:hover {
  border-color: var(--line);
  color: var(--text);
  background: var(--bg-elev-2);
  text-decoration: none;
}

.nav-link[aria-current="page"],
.nav-link.is-active {
  border-color: var(--line-strong);
  color: var(--text);
  background: var(--bg-elev-2);
  box-shadow: inset 3px 0 var(--c-model);
}

.nav-number {
  min-width: 1.9em;
  color: var(--text-faint);
  font: 0.67rem var(--font-mono);
}

.nav-link[aria-current="page"] .nav-number,
.nav-link.is-active .nav-number {
  color: var(--c-model);
}

.mobile-header {
  position: sticky;
  z-index: 25;
  top: 0;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
}

.icon-button,
.button,
.btn,
[data-copy-target],
[data-command-trigger] {
  min-height: 38px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--text);
  background: var(--bg-elev-2);
}

.icon-button {
  display: inline-grid;
  width: 40px;
  padding: 0;
  place-items: center;
}

.button,
.btn,
[data-copy-target],
[data-command-trigger] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 0.82rem;
}

.button:hover,
.btn:hover,
.icon-button:hover,
[data-copy-target]:hover,
[data-command-trigger]:hover {
  border-color: var(--c-model);
  background: var(--bg-elev);
}

.button--primary,
.btn.primary {
  border-color: transparent;
  color: #061018;
  background: #4cc2ff;
  font-weight: 600;
}

.main-shell {
  grid-column: 2;
  min-width: 0;
}

.page {
  width: min(100%, calc(var(--content-width) + 2 * var(--page-pad)));
  margin: 0 auto;
  padding: var(--page-pad) var(--page-pad) 72px;
}

.page-header {
  display: grid;
  gap: 12px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-pager,
.site-footer,
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.page-pager {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.site-footer {
  width: min(100%, calc(var(--content-width) + 2 * var(--page-pad)));
  margin: 0 auto;
  padding: 18px var(--page-pad) 28px;
  border-top: 1px solid var(--line);
  color: var(--text-faint);
  font: 0.7rem var(--font-mono);
}

.page-header__row,
.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.page-lead {
  max-width: 72ch;
  margin-bottom: 0;
  color: var(--text-dim);
  font-size: 1.02rem;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text-faint);
  font: 0.72rem var(--font-mono);
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--line-strong);
}

.breadcrumbs a {
  color: inherit;
}

/* Dense specification components */
.surface,
.panel,
.spec-card,
.prompt-card,
.tracker-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
  box-shadow: var(--shadow);
}

.surface,
.panel {
  padding: clamp(18px, 2.4vw, 28px);
}

.surface + .surface,
.panel + .panel {
  margin-top: 18px;
}

.section-heading {
  margin-bottom: 16px;
}

.panel > :last-child,
.spec-card > :last-child,
.tracker-card > :last-child {
  margin-bottom: 0;
}

.panel > .grid,
.panel > .diagram,
.panel > .table-wrap,
.panel > .callout,
.panel > .stack,
.panel > pre {
  margin-top: 16px;
}

.spec-card,
.prompt-card,
.tracker-card {
  padding: 16px;
  border-radius: var(--radius);
  box-shadow: none;
}

.grid {
  display: grid;
  gap: 14px;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.stack {
  display: grid;
  gap: 14px;
}

.muted { color: var(--text-faint); }

.pill-row,
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill,
.badge,
.status-badge {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  gap: 7px;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  background: var(--bg-elev-2);
  font: 500 0.69rem var(--font-mono);
  white-space: nowrap;
}

.status-badge::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-platform);
  content: "";
}

.status-badge[data-status="Investigating"]::before,
.status-badge[data-status="In Progress"]::before { background: var(--c-model); }
.status-badge[data-status="Ready"]::before { background: var(--c-human); }
.status-badge[data-status="Blocked"]::before { background: var(--c-risk); }
.status-badge[data-status="In Review"]::before { background: var(--c-identity); }
.status-badge[data-status="Verified"]::before { background: var(--c-exchange); }
.status-badge[data-status="Deferred"]::before { background: var(--text-faint); }

.status--investigating::before,
.status--in-progress::before { background: var(--c-model); }
.status--ready::before { background: var(--c-human); }
.status--blocked::before,
.status--outdated::before { background: var(--c-risk); }
.status--in-review::before,
.status--conditional::before,
.status--unclear::before { background: var(--c-identity); }
.status--verified::before,
.status--accepted::before { background: var(--c-exchange); }
.status--deferred::before,
.status--superseded::before,
.status--not-started::before { background: var(--text-faint); }
.status--project-decision::before,
.status--open::before { background: var(--c-human); }

.badge--model { color: var(--c-model); }
.badge--human { color: var(--c-human); }
.badge--risk { color: var(--c-risk); }
.badge--exchange { color: var(--c-exchange); }
.badge--identity { color: var(--c-identity); }
.badge--platform { color: var(--c-platform); }
.accent-human { color: var(--c-human); }

.callout {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--c-human);
  border-radius: var(--radius);
  color: var(--text-dim);
  background: color-mix(in srgb, var(--c-human) 8%, var(--bg-elev-2));
}

[data-authority="model"], .authority-model { --authority: var(--c-model); }
[data-authority="human"], .authority-human { --authority: var(--c-human); }
[data-authority="risk"], .authority-risk { --authority: var(--c-risk); }
[data-authority="exchange"], .authority-exchange { --authority: var(--c-exchange); }
[data-authority="identity"], .authority-identity { --authority: var(--c-identity); }
[data-authority="platform"], .authority-platform { --authority: var(--c-platform); }

.authority-card,
[data-authority] {
  border-top: 3px solid var(--authority, var(--c-platform));
}

.authority-label {
  color: var(--authority, var(--c-platform));
  font: 600 0.68rem var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.authority-label.model,
.diagram-node.model { --authority: var(--c-model); }
.authority-label.human,
.diagram-node.human { --authority: var(--c-human); }
.authority-label.risk,
.diagram-node.risk { --authority: var(--c-risk); }
.authority-label.exchange,
.diagram-node.exchange { --authority: var(--c-exchange); }
.authority-label.identity,
.diagram-node.identity { --authority: var(--c-identity); }
.authority-label.platform,
.diagram-node.platform { --authority: var(--c-platform); }

.callout[data-authority],
.callout.authority-card {
  border-top-width: 1px;
  border-left-color: var(--authority, var(--c-human));
}

/* Tables stay semantically intact and scroll as a unit on small screens. */
.table-wrap,
[data-table-wrap] {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overscroll-behavior-inline: contain;
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  background: var(--bg-elev);
  font-size: 0.86rem;
}

caption {
  padding: 12px 14px;
  color: var(--text-dim);
  font-weight: 600;
  text-align: left;
}

th,
td {
  padding: 11px 13px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}

th {
  position: sticky;
  z-index: 1;
  top: 0;
  color: var(--text-faint);
  background: var(--bg-elev);
  font: 600 0.68rem var(--font-mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

td { color: var(--text-dim); }
tbody tr:hover { background: var(--bg-elev-2); }
tbody tr:last-child td { border-bottom: 0; }

/* Diagrams: horizontal where readable, stacked in narrow layouts. */
.diagram,
[data-diagram] {
  max-width: 100%;
  padding: 14px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
  overscroll-behavior-inline: contain;
}

.diagram-flow,
[data-diagram-flow] {
  display: flex;
  align-items: stretch;
  gap: 8px;
  min-width: max-content;
}

.diagram-node {
  display: grid;
  min-width: 120px;
  flex: 1 1 140px;
  min-height: 84px;
  align-content: center;
  gap: 3px;
  padding: 12px;
  border: 1px solid color-mix(in srgb, var(--authority, var(--c-platform)) 48%, var(--line));
  border-radius: var(--radius);
  background: var(--bg-elev-2);
  text-align: center;
}

.diagram-node small {
  color: var(--text-faint);
  font: 0.7rem var(--font-mono);
}

.diagram-arrow {
  display: grid;
  flex: 0 0 28px;
  min-width: 28px;
  place-items: center;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

/* Prompt library */
.prompt-card {
  display: grid;
  gap: 14px;
  scroll-margin-top: 84px;
}

.prompt-card.is-complete,
[data-prompt-id].is-complete {
  border-color: color-mix(in srgb, var(--c-exchange) 52%, var(--line));
  box-shadow: inset 3px 0 var(--c-exchange);
}

.prompt-card__header,
.prompt-actions {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.prompt-card pre,
.prompt-text {
  max-height: 640px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

[data-copy-target][data-copy-state="success"] {
  border-color: var(--c-exchange);
  color: var(--c-exchange);
}

[data-copy-target][data-copy-state="error"] {
  border-color: var(--c-risk);
  color: var(--c-risk);
}

[data-prompt-complete] {
  accent-color: var(--c-exchange);
}

.prompt-progress {
  display: grid;
  gap: 7px;
}

.progress-track {
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line);
}

.progress-track > [data-prompt-progress-bar] {
  display: block;
  width: 0;
  height: 100%;
  background: var(--c-exchange);
  transition: width 180ms ease;
}

/* Tracker controls and records */
.tracker-toolbar,
[data-tracker-toolbar] {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 10px;
  margin-bottom: 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
}

.field {
  display: grid;
  gap: 5px;
}

.field label,
.field-label {
  color: var(--text-faint);
  font: 500 0.68rem var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

input[type="search"],
input[type="text"],
select,
textarea {
  min-height: 40px;
  padding: 8px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  color: var(--text);
  background: var(--bg-elev-2);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-faint);
  opacity: 1;
}

.filter-chip,
[data-tracker-filter-value] {
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  background: var(--bg-elev-2);
  font-size: 0.76rem;
}

.filter-chip.is-active,
[data-tracker-filter-value][aria-pressed="true"] {
  border-color: var(--c-model);
  color: var(--text);
}

[data-tracker-item][hidden] {
  display: none !important;
}

.tracker-empty {
  padding: 28px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  color: var(--text-faint);
  text-align: center;
}

/* Tabs are optional within a page; real page navigation remains link-based. */
[role="tablist"] {
  display: flex;
  max-width: 100%;
  gap: 4px;
  padding: 5px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
}

[role="tab"] {
  min-height: 36px;
  padding: 7px 11px;
  border: 0;
  border-radius: 8px;
  color: var(--text-dim);
  background: transparent;
  white-space: nowrap;
  font: 0.78rem var(--font-mono);
}

[role="tab"][aria-selected="true"] {
  color: var(--text);
  background: var(--bg-elev-2);
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

/* Command palette / site search */
.command-backdrop,
[data-command-backdrop] {
  position: fixed;
  z-index: 80;
  inset: 0;
  display: grid;
  place-items: start center;
  padding: min(14vh, 110px) 16px 16px;
  background: var(--bg-overlay);
  backdrop-filter: blur(5px);
}

.command-palette,
[data-command-palette] {
  width: min(680px, 100%);
  max-height: min(72vh, 640px);
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  color: var(--text);
  background: var(--bg-elev);
  box-shadow: 0 28px 90px -28px rgb(0 0 0 / 90%);
}

.command-panel {
  min-width: 0;
}

.command-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 14px;
  border-bottom: 1px solid var(--line);
}

.command-header h2 {
  margin-bottom: 0;
  font-size: 1.05rem;
}

dialog.command-palette,
dialog[data-command-palette] {
  position: fixed;
  inset: min(14vh, 110px) auto auto 50%;
  margin: 0;
  transform: translateX(-50%);
}

dialog::backdrop {
  background: var(--bg-overlay);
  backdrop-filter: blur(5px);
}

.command-search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px;
  border-bottom: 1px solid var(--line);
}

.command-search input,
[data-search-input] {
  width: 100%;
  min-height: 42px;
}

.command-results,
[data-search-results] {
  max-height: min(56vh, 480px);
  margin: 0;
  padding: 7px;
  overflow-y: auto;
  list-style: none;
  overscroll-behavior: contain;
}

.command-result {
  display: grid;
  gap: 2px;
  padding: 10px 11px;
  border: 1px solid transparent;
  border-radius: 9px;
  color: var(--text);
  text-decoration: none;
}

.command-result:hover,
.command-result.is-active,
.command-result[aria-selected="true"] {
  border-color: var(--line-strong);
  background: var(--bg-elev-2);
  text-decoration: none;
}

.command-result small {
  color: var(--text-faint);
  font: 0.68rem var(--font-mono);
}

.command-empty {
  padding: 24px;
  color: var(--text-faint);
  text-align: center;
}

.copy-toast {
  position: fixed;
  z-index: 100;
  right: 18px;
  bottom: 18px;
  padding: 9px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  background: var(--bg-elev);
  box-shadow: var(--shadow);
  font-size: 0.8rem;
}

@media (max-width: 1040px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .app-shell { display: block; }
  .main-shell { display: block; }
  .mobile-header { display: flex; }

  .site-sidebar {
    width: min(var(--sidebar-width), calc(100vw - 48px));
    max-width: 100%;
    transform: translateX(-105%);
    transition: transform 180ms ease;
    box-shadow: 30px 0 70px -35px rgb(0 0 0 / 92%);
  }

  body.nav-open .site-sidebar {
    transform: translateX(0);
  }

  body.nav-open::after {
    position: fixed;
    z-index: 20;
    inset: 0;
    background: var(--bg-overlay);
    content: "";
  }

  .page { padding-top: 22px; }

  .diagram-flow,
  [data-diagram-flow] {
    flex-direction: column;
    min-width: 0;
  }

  .diagram-arrow {
    min-height: 25px;
    transform: rotate(90deg);
  }
}

@media (max-width: 640px) {
  body { font-size: 14.5px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .page-header__row, .section-heading { align-items: flex-start; flex-direction: column; }
  .surface, .panel { padding: 16px; border-radius: var(--radius); }
  .prompt-card__header, .prompt-actions { align-items: stretch; flex-direction: column; }
  .page-pager, .site-footer, .card-head { align-items: flex-start; flex-direction: column; }
  .tracker-toolbar, [data-tracker-toolbar] { align-items: stretch; flex-direction: column; }
  .tracker-toolbar .field, [data-tracker-toolbar] .field { width: 100%; }
  table { min-width: 640px; }
  pre { padding: 14px; font-size: 0.76rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media print {
  :root,
  :root[data-theme] {
    color-scheme: light;
    --bg: #fff;
    --bg-elev: #fff;
    --bg-elev-2: #f4f5f7;
    --line: #c8ced7;
    --line-strong: #8793a2;
    --text: #111827;
    --text-dim: #344054;
    --text-faint: #566579;
    --shadow: none;
  }

  @page { margin: 14mm; }

  body {
    background: #fff !important;
    font-size: 10pt;
  }

  .app-shell { display: block; }
  .site-sidebar,
  .mobile-header,
  .tracker-toolbar,
  [data-tracker-toolbar],
  [data-copy-target],
  [data-command-trigger],
  [data-prompt-complete],
  .copy-toast {
    display: none !important;
  }

  .main-shell { display: block; }
  .page { width: 100%; padding: 0; }
  .surface, .panel, .spec-card, .prompt-card, .tracker-card {
    break-inside: avoid;
    box-shadow: none;
  }

  .diagram,
  [data-diagram],
  .table-wrap,
  [data-table-wrap],
  pre {
    max-height: none !important;
    overflow: visible !important;
  }

  .diagram-flow,
  [data-diagram-flow] {
    display: flex;
    min-width: 0;
  }

  table { min-width: 0; font-size: 8pt; }
  th { position: static; }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    color: var(--text-faint);
    font: 7.5pt var(--font-mono);
    overflow-wrap: anywhere;
  }

  a[href^="#"]::after,
  .nav-link::after {
    content: "";
  }
}