/**
 * DEPLOY1 design tokens.
 *
 * Single source of truth for color, typography, spacing, radius, shadow and
 * motion across both products (deploy1.agency and blog.deploy1.agency).
 *
 * Colors are stored as space-separated RGB triplets so any consumer can apply
 * alpha transparency with CSS syntax:
 *
 *   color: rgb(var(--d1-color-text-primary) / 0.6);
 *
 * The agency app maps these into its Tailwind theme
 * (apps/agency/tailwind.config.js) using the same triplet values, so utility
 * classes and the primitives below resolve to identical colors.
 *
 * Brand:
 *  - navy #060F1E  (primary surface for header/footer/dark sections)
 *  - blue #0051D5  (brand action color)
 *  - orange #EA580C (accent/launch color)
 *  - green #10B981  (status/positive color)
 */

:root {
  --d1-color-navy-950: 6 15 30;
  --d1-color-navy-900: 10 26 47;
  --d1-color-blue-600: 0 81 213;
  --d1-color-blue-700: 2 67 172;
  --d1-color-accent-600: 234 88 12;
  --d1-color-accent-700: 194 65 12;
  --d1-color-status-500: 16 185 129;

  --d1-color-ink-900: 15 23 42;
  --d1-color-ink-700: 51 65 85;
  --d1-color-ink-600: 71 85 105;
  --d1-color-ink-500: 100 116 139;
  --d1-color-ink-400: 148 163 184;
  --d1-color-ink-300: 203 213 225;

  --d1-color-line-200: 226 232 240;
  --d1-color-line-300: 203 213 225;
  --d1-color-border-dark: 30 41 59;

  --d1-color-surface: 255 255 255;
  --d1-color-surface-subtle: 248 250 252;
  --d1-color-surface-muted: 241 245 249;

  --d1-color-text-primary: var(--d1-color-ink-900);
  --d1-color-text-secondary: var(--d1-color-ink-600);
  --d1-color-text-muted: var(--d1-color-ink-400);
  --d1-color-text-inverse: 255 255 255;

  /* System-first font stacks. We load no external fonts: removing font
     downloads eliminates layout shift, FOUT and third-party connections.
     Distinctive display type is achieved with weight and letter-spacing. */
  --d1-font-sans:
    ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --d1-font-display:
    ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --d1-font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --d1-font-fallback-system: var(--d1-font-sans);

  --d1-space-1: 0.25rem;
  --d1-space-2: 0.5rem;
  --d1-space-3: 0.75rem;
  --d1-space-4: 1rem;
  --d1-space-5: 1.25rem;
  --d1-space-6: 1.5rem;
  --d1-space-8: 2rem;
  --d1-space-10: 2.5rem;
  --d1-space-12: 3rem;
  --d1-space-16: 4rem;
  --d1-space-20: 5rem;
  --d1-space-24: 6rem;

  --d1-radius-sm: 0.375rem;
  --d1-radius-md: 0.5rem;
  --d1-radius-lg: 0.75rem;
  --d1-radius-xl: 1rem;
  --d1-radius-2xl: 1.25rem;
  --d1-radius-full: 9999px;

  --d1-shadow-xs: 0 1px 2px 0 rgb(15 23 42 / 0.05);
  --d1-shadow-sm: 0 1px 3px 0 rgb(15 23 42 / 0.08);
  --d1-shadow-md: 0 4px 6px -1px rgb(15 23 42 / 0.1);
  --d1-shadow-lg: 0 10px 15px -3px rgb(15 23 42 / 0.12);
  --d1-shadow-xl: 0 20px 25px -5px rgb(15 23 42 / 0.14);

  --d1-type-display-4xl: 3.75rem;
  --d1-type-display-4xl-lh: 1.05;
  --d1-type-display-3xl: 3rem;
  --d1-type-display-3xl-lh: 1.1;
  --d1-type-display-2xl: 2.25rem;
  --d1-type-display-2xl-lh: 1.15;
  --d1-type-display-xl: 1.875rem;
  --d1-type-display-xl-lh: 1.25;

  --d1-type-lg: 1.125rem;
  --d1-type-lg-lh: 1.6;
  --d1-type-base: 1rem;
  --d1-type-base-lh: 1.6;
  --d1-type-sm: 0.875rem;
  --d1-type-sm-lh: 1.5;
  --d1-type-xs: 0.8125rem;
  --d1-type-xs-lh: 1.45;

  --d1-motion-fast: 120ms;
  --d1-motion-base: 180ms;

  --d1-focus-ring: 0 0 0 0.25rem rgb(var(--d1-color-blue-600) / 0.18);
}

/*!
 * DEPLOY1 base styles.
 *
 * Shared, framework-independent global rules used by the blog. The agency
 * app relies on Tailwind's preflight for its reset and imports only the
 * tokens; rules in this file must therefore never depend on Tailwind and
 * must be safe to include in any order.
 */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--d1-font-sans);
  font-size: var(--d1-type-base);
  line-height: var(--d1-type-base-lh);
  color: rgb(var(--d1-color-text-primary));
  background-color: rgb(var(--d1-color-surface));
  -webkit-font-smoothing: antialiased;
  font-synthesis-weight: none;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-family: var(--d1-font-display);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

p {
  margin: 0;
}

p + p {
  margin-top: var(--d1-space-4);
}

a {
  color: inherit;
}

button {
  font: inherit;
}

::selection {
  background-color: rgb(var(--d1-color-accent-600));
  color: rgb(var(--d1-color-surface));
}

/* Visible, consistent focus indicator for keyboard users. */
:focus-visible {
  outline: 2px solid rgb(var(--d1-color-blue-600));
  outline-offset: 2px;
}

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

/* Respect users who prefer reduced motion: collapse animation and
   scroll behaviors without removing content or functionality. */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/*!
 * DEPLOY1 shared component primitives.
 *
 * Extracted where the agency site and blog genuinely benefit from shared
 * visual language: layout shells, buttons, badges, cards, links, form
 * controls and editorial prose. Keep this file small and intentional.
 *
 * Class names are plain CSS (no Tailwind dependency) so both apps consume
 * the exact same primitives.
 */

/* ---------- Layout shells ---------- */

.container {
  width: 100%;
  max-width: 80rem;
  margin-inline: auto;
  padding-inline: var(--d1-space-6);
}

.container--narrow {
  max-width: 48rem;
}

.section {
  padding-block: var(--d1-space-16) var(--d1-space-20);
}

.section--subtle {
  background-color: rgb(var(--d1-color-surface-subtle));
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--d1-space-2);
  min-height: 2.75rem;
  padding: var(--d1-space-3) var(--d1-space-6);
  border-radius: var(--d1-radius-md);
  border: 1px solid transparent;
  font-family: var(--d1-font-display);
  font-weight: 700;
  font-size: var(--d1-type-sm);
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--d1-motion-base) ease,
    border-color var(--d1-motion-base) ease,
    color var(--d1-motion-base) ease,
    box-shadow var(--d1-motion-base) ease;
}

.btn--primary {
  background-color: rgb(var(--d1-color-blue-600));
  color: rgb(var(--d1-color-surface));
}

.btn--primary:hover {
  background-color: rgb(var(--d1-color-blue-700));
}

.btn--dark {
  background-color: rgb(var(--d1-color-navy-950));
  color: rgb(var(--d1-color-surface));
}

.btn--dark:hover {
  background-color: rgb(var(--d1-color-navy-900));
}

.btn--secondary {
  background-color: rgb(var(--d1-color-surface));
  color: rgb(var(--d1-color-text-primary));
  border-color: rgb(var(--d1-color-line-300));
}

.btn--secondary:hover {
  border-color: rgb(var(--d1-color-ink-900));
}

.btn--on-dark {
  background-color: rgb(var(--d1-color-surface));
  color: rgb(var(--d1-color-navy-950));
}

.btn--ghost-dark {
  background-color: transparent;
  color: rgb(var(--d1-color-text-inverse));
  border-color: rgb(255 255 255 / 0.2);
}

.btn--ghost-dark:hover {
  background-color: rgb(255 255 255 / 0.08);
}

.btn--block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ---------- Badges & labels ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--d1-space-2);
  padding: var(--d1-space-1) var(--d1-space-3);
  border-radius: var(--d1-radius-full);
  border: 1px solid rgb(var(--d1-color-line-200));
  background-color: rgb(var(--d1-color-surface));
  font-family: var(--d1-font-mono);
  font-size: var(--d1-type-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgb(var(--d1-color-text-secondary));
}

.badge--status {
  color: rgb(var(--d1-color-status-500));
  border-color: rgb(var(--d1-color-status-500));
  background-color: rgb(var(--d1-color-status-500) / 0.08);
}

.badge--accent {
  color: rgb(var(--d1-color-accent-600));
  border-color: rgb(var(--d1-color-accent-600));
  background-color: rgb(var(--d1-color-accent-600) / 0.08);
}

.badge--inverse {
  background-color: rgb(255 255 255 / 0.06);
  border-color: rgb(255 255 255 / 0.12);
  color: rgb(var(--d1-color-surface));
}

.eyebrow {
  font-family: var(--d1-font-mono);
  font-size: var(--d1-type-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgb(var(--d1-color-blue-600));
}

/* ---------- Cards ---------- */

.card {
  border: 1px solid rgb(var(--d1-color-line-200));
  border-radius: var(--d1-radius-xl);
  background-color: rgb(var(--d1-color-surface));
  box-shadow: var(--d1-shadow-xs);
}

.card--emphasized {
  border-width: 2px;
  border-color: rgb(var(--d1-color-blue-600));
  box-shadow: var(--d1-shadow-md);
}

/* ---------- Links ---------- */

.link-subtle {
  color: rgb(var(--d1-color-text-secondary));
  text-decoration: none;
  transition: color var(--d1-motion-fast) ease;
}

.link-subtle:hover {
  color: rgb(var(--d1-color-text-primary));
}

/* ---------- Forms ---------- */

.field {
  display: flex;
  flex-direction: column;
  gap: var(--d1-space-2);
}

.field__label {
  font-family: var(--d1-font-mono);
  font-size: var(--d1-type-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgb(var(--d1-color-text-primary));
}

.field__required {
  color: rgb(var(--d1-color-accent-600));
}

.field__input,
.field__select,
.field__textarea {
  width: 100%;
  padding: var(--d1-space-4);
  border: 1px solid rgb(var(--d1-color-line-200));
  border-radius: var(--d1-radius-lg);
  background-color: rgb(var(--d1-color-surface-subtle));
  font-family: inherit;
  font-size: var(--d1-type-sm);
  color: rgb(var(--d1-color-text-primary));
  transition:
    border-color var(--d1-motion-fast) ease,
    background-color var(--d1-motion-fast) ease;
}

.field__input:hover,
.field__select:hover,
.field__textarea:hover {
  border-color: rgb(var(--d1-color-ink-400));
}

.field__input:focus,
.field__select:focus,
.field__textarea:focus {
  outline: none;
  border-color: rgb(var(--d1-color-blue-600));
  box-shadow: var(--d1-focus-ring);
  background-color: rgb(var(--d1-color-surface));
}

.field__input[aria-invalid="true"],
.field__select[aria-invalid="true"],
.field__textarea[aria-invalid="true"] {
  border-color: rgb(var(--d1-color-accent-600));
}

.field__select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m4 6 4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* ---------- Editorial prose (used by the blog and rich content) ---------- */

.prose {
  font-size: var(--d1-type-lg);
  line-height: var(--d1-type-lg-lh);
  color: rgb(var(--d1-color-text-primary));
}

.prose > * + * {
  margin-top: var(--d1-space-6);
}

.prose h2 {
  font-size: var(--d1-type-display-xl);
  line-height: var(--d1-type-display-xl-lh);
  letter-spacing: -0.02em;
  margin-top: var(--d1-space-12);
}

.prose h3 {
  font-size: 1.4rem;
  margin-top: var(--d1-space-10);
}

.prose a {
  color: rgb(var(--d1-color-blue-600));
  text-decoration: underline;
  text-decoration-color: rgb(var(--d1-color-blue-600) / 0.35);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--d1-motion-fast) ease;
}

.prose a:hover {
  text-decoration-color: rgb(var(--d1-color-blue-600));
}

.prose ul,
.prose ol {
  padding-left: 1.5rem;
}

.prose ul {
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li + li {
  margin-top: var(--d1-space-2);
}

.prose blockquote {
  margin-inline: 0;
  padding: var(--d1-space-4) var(--d1-space-6);
  border-left: 3px solid rgb(var(--d1-color-blue-600));
  background-color: rgb(var(--d1-color-surface-subtle));
  border-radius: 0 var(--d1-radius-lg) var(--d1-radius-lg) 0;
  color: rgb(var(--d1-color-text-secondary));
}

.prose blockquote p {
  margin: 0;
}

.prose code {
  font-family: var(--d1-font-mono);
  font-size: 0.875em;
  padding: 0.15em 0.4em;
  border-radius: 0.25rem;
  background-color: rgb(var(--d1-color-surface-muted));
  border: 1px solid rgb(var(--d1-color-line-200));
}

.prose pre {
  overflow-x: auto;
  padding: var(--d1-space-6);
  border-radius: var(--d1-radius-lg);
  background-color: rgb(var(--d1-color-navy-950));
  border: 1px solid rgb(var(--d1-color-border-dark));
}

.prose pre code {
  display: block;
  padding: 0;
  background: none;
  border: none;
  color: #e2e8f0;
  font-size: var(--d1-type-sm);
  line-height: 1.7;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--d1-type-base);
}

.prose th,
.prose td {
  text-align: left;
  padding: var(--d1-space-3) var(--d1-space-4);
  border-bottom: 1px solid rgb(var(--d1-color-line-200));
}

.prose th {
  font-family: var(--d1-font-display);
  font-weight: 700;
  background-color: rgb(var(--d1-color-surface-subtle));
}

.prose img {
  border-radius: var(--d1-radius-lg);
  border: 1px solid rgb(var(--d1-color-line-200));
}

/* Callouts: out of band notes that should not be confused with body copy. */
.callout {
  padding: var(--d1-space-5) var(--d1-space-6);
  border-radius: var(--d1-radius-lg);
  border-left: 3px solid rgb(var(--d1-color-accent-600));
  background-color: rgb(var(--d1-color-accent-600) / 0.06);
  font-size: var(--d1-type-base);
  color: rgb(var(--d1-color-text-secondary));
}

.callout__title {
  display: block;
  margin-bottom: var(--d1-space-2);
  font-family: var(--d1-font-mono);
  font-size: var(--d1-type-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgb(var(--d1-color-accent-700));
}

/* Code copy button attached to code blocks (progressive enhancement). */
.code-copy {
  position: relative;
}

.code-copy__button {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border-radius: var(--d1-radius-sm);
  border: 1px solid rgb(255 255 255 / 0.15);
  background-color: rgb(255 255 255 / 0.06);
  color: #cbd5e1;
  font-family: var(--d1-font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition:
    background-color var(--d1-motion-fast) ease,
    color var(--d1-motion-fast) ease;
}

.code-copy__button:hover {
  background-color: rgb(255 255 255 / 0.14);
  color: #ffffff;
}

/**
 * Blog-specific styles, layered on top of the shared design primitives
 * (packages/design: tokens.css, base.css, components.css).
 *
 * Scope is intentionally narrow: layout chrome for the blog shell, the
 * post/listing grids, search, reading progress and code copy affordances.
 * Anything that could be shared with the agency already lives in the design
 * package — do not re-declare tokens or primitives here.
 */

/* ---------- Header ---------- */

.blog-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgb(var(--d1-color-surface) / 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgb(var(--d1-color-line-200));
}

.blog-header__inner {
  display: flex;
  align-items: center;
  gap: var(--d1-space-6);
  min-height: 4.5rem;
}

.blog-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--d1-space-2);
  font-family: var(--d1-font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: rgb(var(--d1-color-text-primary));
}

.blog-brand__mark {
  width: 1.5rem;
  height: 1.5rem;
  color: rgb(var(--d1-color-navy-950));
}

.blog-brand__tag {
  font-style: normal;
  font-family: var(--d1-font-mono);
  font-size: var(--d1-type-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgb(var(--d1-color-blue-600));
}

.blog-nav {
  display: flex;
  align-items: center;
  gap: var(--d1-space-5);
  margin-inline-start: var(--d1-space-4);
  font-size: var(--d1-type-sm);
  color: rgb(var(--d1-color-text-secondary));
}

.blog-nav a {
  text-decoration: none;
  color: inherit;
  transition: color var(--d1-motion-fast) ease;
}

.blog-nav a:hover {
  color: rgb(var(--d1-color-text-primary));
}

.blog-header__actions {
  display: flex;
  align-items: center;
  gap: var(--d1-space-4);
  margin-inline-start: auto;
  min-width: 0;
}

.btn--sm {
  min-height: 2.25rem;
  padding: var(--d1-space-2) var(--d1-space-4);
  font-size: var(--d1-type-xs);
}

/* ---------- Search ---------- */

.blog-search {
  position: relative;
}

.blog-search__input {
  width: 12rem;
  padding: var(--d1-space-2) var(--d1-space-4);
  border: 1px solid rgb(var(--d1-color-line-200));
  border-radius: var(--d1-radius-full);
  background-color: rgb(var(--d1-color-surface-subtle));
  font-size: var(--d1-type-sm);
  color: rgb(var(--d1-color-text-primary));
  transition:
    border-color var(--d1-motion-fast) ease,
    background-color var(--d1-motion-fast) ease;
}

.blog-search__input:focus {
  outline: none;
  border-color: rgb(var(--d1-color-blue-600));
  background-color: rgb(var(--d1-color-surface));
  box-shadow: var(--d1-focus-ring);
}

.blog-search__results {
  position: absolute;
  top: calc(100% + var(--d1-space-2));
  right: 0;
  width: min(22rem, 80vw);
  max-height: 24rem;
  overflow-y: auto;
  margin: 0;
  padding: var(--d1-space-2);
  list-style: none;
  background: rgb(var(--d1-color-surface));
  border: 1px solid rgb(var(--d1-color-line-200));
  border-radius: var(--d1-radius-lg);
  box-shadow: var(--d1-shadow-lg);
}

.blog-search__result {
  border-radius: var(--d1-radius-md);
}

.blog-search__result a {
  display: block;
  padding: var(--d1-space-3) var(--d1-space-4);
  text-decoration: none;
}

.blog-search__result:hover,
.blog-search__result[aria-selected="true"] {
  background-color: rgb(var(--d1-color-surface-subtle));
}

.blog-search__result-title {
  display: block;
  font-family: var(--d1-font-display);
  font-weight: 700;
  font-size: var(--d1-type-sm);
  color: rgb(var(--d1-color-text-primary));
}

.blog-search__result-meta {
  display: block;
  margin-top: var(--d1-space-1);
  font-size: var(--d1-type-xs);
  color: rgb(var(--d1-color-text-muted));
}

/* ---------- Sections & headings ---------- */

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--d1-space-4);
  margin-bottom: var(--d1-space-8);
}

.section-head h2 {
  font-size: var(--d1-type-display-xl);
  line-height: var(--d1-type-display-xl-lh);
}

.section-head--mt {
  margin-top: var(--d1-space-16);
}

.section-head__count {
  font-family: var(--d1-font-mono);
  font-size: var(--d1-type-xs);
  color: rgb(var(--d1-color-text-muted));
}

/* ---------- Hero ---------- */

.blog-hero {
  padding-block: var(--d1-space-16) var(--d1-space-12);
  border-bottom: 1px solid rgb(var(--d1-color-line-200));
  background-color: rgb(var(--d1-color-surface));
}

.blog-hero h1 {
  max-width: 48rem;
  margin-top: var(--d1-space-5);
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.blog-hero h1 em {
  font-style: normal;
  color: rgb(var(--d1-color-blue-600));
}

.blog-hero__lead {
  max-width: 40rem;
  margin-top: var(--d1-space-5);
  font-size: var(--d1-type-lg);
  color: rgb(var(--d1-color-text-secondary));
}

.listing-hero h1 {
  margin-top: var(--d1-space-4);
}

.listing-hero .badge {
  text-transform: capitalize;
}

/* ---------- Post grid & cards ---------- */

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(20rem, 100%), 1fr));
  gap: var(--d1-space-6);
}

.post-card {
  display: flex;
  border: 1px solid rgb(var(--d1-color-line-200));
  border-radius: var(--d1-radius-xl);
  background: rgb(var(--d1-color-surface));
  box-shadow: var(--d1-shadow-xs);
  transition:
    border-color var(--d1-motion-fast) ease,
    box-shadow var(--d1-motion-fast) ease;
}

.post-card:hover {
  border-color: rgb(var(--d1-color-ink-400));
  box-shadow: var(--d1-shadow-md);
}

.post-card__link {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--d1-space-6);
  text-decoration: none;
  color: inherit;
}

.post-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--d1-space-3);
  font-family: var(--d1-font-mono);
  font-size: var(--d1-type-xs);
  color: rgb(var(--d1-color-text-muted));
}

.post-card__title {
  margin-top: var(--d1-space-4);
  font-family: var(--d1-font-display);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: rgb(var(--d1-color-text-primary));
}

.post-card__excerpt {
  margin-top: var(--d1-space-3);
  font-size: var(--d1-type-sm);
  color: rgb(var(--d1-color-text-secondary));
}

.post-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--d1-space-3);
  margin-top: auto;
  padding-top: var(--d1-space-5);
  font-family: var(--d1-font-mono);
  font-size: var(--d1-type-xs);
  color: rgb(var(--d1-color-text-muted));
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--d1-space-2);
}

.badge-row .badge {
  text-decoration: none;
  transition: border-color var(--d1-motion-fast) ease;
}

.badge--muted {
  color: rgb(var(--d1-color-text-muted));
}

.badge--muted:hover {
  border-color: rgb(var(--d1-color-line-300));
}

/* ---------- Reading progress ---------- */

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  transform-origin: 0 50%;
  transform: scaleX(0);
  background: rgb(var(--d1-color-blue-600));
  z-index: 60;
}

/* ---------- Article ---------- */

.post {
  padding-block: var(--d1-space-12) var(--d1-space-20);
}

.post__back {
  display: inline-block;
  margin-bottom: var(--d1-space-8);
  font-size: var(--d1-type-sm);
}

.post__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--d1-space-3);
  font-family: var(--d1-font-mono);
  font-size: var(--d1-type-xs);
  color: rgb(var(--d1-color-text-muted));
}

.post__updated {
  padding-left: var(--d1-space-3);
  border-left: 1px solid rgb(var(--d1-color-line-200));
}

.post__title {
  margin-top: var(--d1-space-5);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.post__description {
  margin-top: var(--d1-space-5);
  font-size: var(--d1-type-lg);
  color: rgb(var(--d1-color-text-secondary));
}

.post__author {
  display: inline-flex;
  align-items: center;
  gap: var(--d1-space-3);
  margin-top: var(--d1-space-6);
  padding: var(--d1-space-3) var(--d1-space-4);
  background: rgb(var(--d1-color-surface-subtle));
  border: 1px solid rgb(var(--d1-color-line-200));
  border-radius: var(--d1-radius-lg);
}

.post__author-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--d1-radius-full);
  background: rgb(var(--d1-color-navy-950));
  color: rgb(var(--d1-color-surface));
  font-family: var(--d1-font-display);
  font-weight: 800;
}

.post__author strong,
.post__author span {
  display: block;
}

.post__author span {
  font-size: var(--d1-type-xs);
  color: rgb(var(--d1-color-text-muted));
}

.post .prose {
  margin-top: var(--d1-space-12);
}

/* ---------- Table of contents ---------- */

.toc {
  margin-top: var(--d1-space-8);
  padding: var(--d1-space-5) var(--d1-space-6);
  border: 1px solid rgb(var(--d1-color-line-200));
  border-radius: var(--d1-radius-lg);
  background: rgb(var(--d1-color-surface-subtle));
}

.toc h2 {
  font-size: var(--d1-type-lg);
  margin-bottom: var(--d1-space-3);
}

.toc__list {
  display: grid;
  gap: var(--d1-space-2);
  margin: 0;
}

.toc__item a {
  color: rgb(var(--d1-color-text-secondary));
  text-decoration: none;
}

.toc__item a:hover {
  color: rgb(var(--d1-color-blue-600));
  text-decoration: underline;
}

.toc__item--sub {
  margin-inline-start: var(--d1-space-4);
}

/* ---------- Heading anchors ---------- */

.prose h2,
.prose h3,
.prose h4 {
  scroll-margin-top: 5rem;
}

.heading-anchor {
  display: inline-block;
  margin-inline-start: -1.25rem;
  padding-inline-end: 0.25rem;
  width: 1.25rem;
  color: rgb(var(--d1-color-text-muted));
  text-decoration: none;
}

@media (hover: hover) {
  .heading-anchor {
    opacity: 0;
  }

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

.heading-anchor:focus {
  opacity: 1;
}

/* ---------- 404 ---------- */

.not-found {
  padding-block: var(--d1-space-20);
}

.not-found h1 {
  margin-top: var(--d1-space-4);
  font-size: var(--d1-type-display-3xl);
  line-height: var(--d1-type-display-3xl-lh);
}

.not-found__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--d1-space-3);
  margin-top: var(--d1-space-8);
}

/* ---------- Footer ---------- */

.blog-footer {
  padding-block: var(--d1-space-12);
  background: rgb(var(--d1-color-navy-950));
  color: rgb(var(--d1-color-ink-400));
  border-top: 1px solid rgb(var(--d1-color-border-dark));
}

.blog-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--d1-space-6);
}

.blog-footer__brand strong {
  font-family: var(--d1-font-display);
  color: rgb(var(--d1-color-surface));
}

.blog-footer__brand p {
  margin-top: var(--d1-space-2);
  font-size: var(--d1-type-sm);
  color: rgb(var(--d1-color-ink-400));
}

.blog-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--d1-space-2);
  font-size: var(--d1-type-sm);
}

.blog-footer__links a {
  color: rgb(var(--d1-color-ink-400));
  text-decoration: none;
}

.blog-footer__links a:hover {
  color: rgb(var(--d1-color-surface));
}

.blog-footer__legal {
  width: 100%;
  padding-top: var(--d1-space-6);
  border-top: 1px solid rgb(var(--d1-color-border-dark));
  font-family: var(--d1-font-mono);
  font-size: var(--d1-type-xs);
}

/* ---------- Responsive ---------- */

@media (max-width: 56rem) {
  .blog-header__inner {
    flex-wrap: wrap;
    padding-block: var(--d1-space-3);
  }

  .blog-nav {
    gap: var(--d1-space-4);
    margin-inline-start: 0;
  }

  .blog-header__actions {
    margin-inline-start: auto;
  }

  .blog-search__input {
    width: 8rem;
  }
}

@media (max-width: 40rem) {
  .blog-search__input {
    width: 6.5rem;
  }

  .blog-header__actions .btn {
    display: none;
  }
}

/*!
 * DEPLOY1 accessibility toolkit.
 *
 * Consumer-facing assistive features shared by both products:
 *
 *  - "Accessibility options" toolbar: text-size and high-contrast
 *    preferences (data-attributes on <html>, persisted by each app's small
 *    module) plus client-side text-to-speech ("Listen") via the Web Speech
 *    API.
 *  - Visible focus indicators, forced-colors and reduced-motion support.
 *  - Clean print output for every page.
 *
 * Loaded by the agency (Tailwind) and bundled into the blog. Where a rule
 * must beat a framework utility, scope it to specific selectors and keep
 * toolbar markup free of conflicting utility classes.
 */

:root {
  color-scheme: light;
}

/* ---------- Text size ---------- */

:root[data-text-scale="large"] {
  font-size: 112.5%;
}

:root[data-text-scale="xlarge"] {
  font-size: 125%;
}

@media print {
  :root[data-text-scale="large"],
  :root[data-text-scale="xlarge"] {
    font-size: 100%;
  }
}

/* ---------- High contrast ---------- */

/* Token-level overrides drive the shared design primitives (blog + agency
   components that reference tokens). */

:root[data-contrast="high"] {
  --d1-color-text-muted: var(--d1-color-ink-700);
  --d1-color-text-secondary: var(--d1-color-ink-900);
  --d1-color-line-200: var(--d1-color-ink-400);
  --d1-color-line-300: var(--d1-color-ink-500);
}

@media (prefers-contrast: more) {
  :root {
    --d1-color-text-muted: var(--d1-color-ink-700);
    --d1-color-text-secondary: var(--d1-color-ink-900);
    --d1-color-line-200: var(--d1-color-ink-400);
    --d1-color-line-300: var(--d1-color-ink-500);
  }
}

/* Agency Tailwind utilities encode colors literally, so boost them under
   the same two triggers. Higher specificity than a bare utility class. */

:root[data-contrast="high"] .text-ink-muted {
  color: rgb(var(--d1-color-ink-600));
}

:root[data-contrast="high"] .text-ink-secondary {
  color: rgb(var(--d1-color-ink-900));
}

:root[data-contrast="high"] .text-ink-300 {
  color: rgb(var(--d1-color-ink-700));
}

:root[data-contrast="high"] .text-slate-300 {
  color: rgb(var(--d1-color-ink-300));
}

:root[data-contrast="high"] .text-slate-400 {
  color: rgb(var(--d1-color-ink-300));
}

:root[data-contrast="high"] .border-line {
  border-color: rgb(var(--d1-color-ink-400));
}

:root[data-contrast="high"] .border-line-strong {
  border-color: rgb(var(--d1-color-ink-500));
}

@media (prefers-contrast: more) {
  body .text-ink-muted {
    color: rgb(var(--d1-color-ink-600));
  }

  body .text-ink-secondary {
    color: rgb(var(--d1-color-ink-900));
  }

  body .text-ink-300 {
    color: rgb(var(--d1-color-ink-700));
  }

  body .text-slate-300 {
    color: rgb(var(--d1-color-ink-300));
  }

  body .text-slate-400 {
    color: rgb(var(--d1-color-ink-300));
  }

  body .border-line {
    border-color: rgb(var(--d1-color-ink-400));
  }

  body .border-line-strong {
    border-color: rgb(var(--d1-color-ink-500));
  }
}

/* ---------- Focus ---------- */

:focus-visible {
  outline: 2px solid rgb(var(--d1-color-blue-600));
  outline-offset: 2px;
}

@media (forced-colors: active) {
  :focus-visible {
    outline-color: Highlight;
    outline-offset: 2px;
  }

  .a11y-tools button {
    border: 1px solid ButtonText;
  }
}

/* ---------- Motion ---------- */

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Anchor jumps clear the sticky headers on both sites. */
main [id] {
  scroll-margin-top: 5rem;
}

/* ---------- Accessibility toolbar ---------- */

.a11y-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--d1-space-2);
  padding: var(--d1-space-3) var(--d1-space-6);
  background: rgb(var(--d1-color-surface-subtle));
  border-bottom: 1px solid rgb(var(--d1-color-line-200));
  font-family: var(--d1-font-mono);
  font-size: var(--d1-type-xs);
  color: rgb(var(--d1-color-text-secondary));
}

.a11y-tools button {
  min-height: 2.25rem;
  padding: var(--d1-space-1) var(--d1-space-3);
  border: 1px solid rgb(var(--d1-color-line-300));
  border-radius: var(--d1-radius-md);
  background: rgb(var(--d1-color-surface));
  font: inherit;
  color: rgb(var(--d1-color-text-primary));
  cursor: pointer;
  transition:
    background-color var(--d1-motion-fast) ease,
    border-color var(--d1-motion-fast) ease,
    color var(--d1-motion-fast) ease;
}

.a11y-tools button:hover {
  border-color: rgb(var(--d1-color-blue-600));
}

.a11y-tools button[aria-pressed="true"] {
  background: rgb(var(--d1-color-blue-600));
  border-color: rgb(var(--d1-color-blue-600));
  color: rgb(var(--d1-color-surface));
}

.a11y-tools button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ---------- Skip link ---------- */

.skip-to-main {
  position: absolute;
  top: -9999px;
  left: 1rem;
  z-index: 9999;
  padding: 0.75rem 1.25rem;
  border-radius: var(--d1-radius-md);
  background: rgb(var(--d1-color-blue-600));
  color: rgb(var(--d1-color-surface));
  font-weight: 700;
  text-decoration: none;
}

.skip-to-main:focus {
  top: 1rem;
}

/* ---------- Print ---------- */

@page {
  margin: 1.5cm;
}

@media print {
  html {
    font-size: 100%;
  }

  body {
    background: #fff !important;
    color: #000 !important;
  }

  * {
    background: none !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a,
  a:visited {
    color: #000;
  }

  .skip-to-main,
  .a11y-tools,
  .reading-progress,
  .code-copy,
  .blog-search,
  .blog-header__actions {
    display: none !important;
  }

  header,
  footer {
    position: static !important;
  }

  details {
    display: block;
  }

  details > :not(summary) {
    display: block !important;
  }

  details > summary {
    display: none !important;
  }

  main a[href]:not([href^="#"])::after,
  .prose a[href]:not([href^="#"])::after {
    content: " (" attr(href) ")";
    font-size: 0.9em;
    word-break: break-all;
  }

  h1,
  h2,
  h3,
  h4 {
    page-break-after: avoid;
    break-after: avoid;
  }

  pre,
  blockquote,
  li,
  table,
  figure {
    page-break-inside: avoid;
    break-inside: avoid;
  }

  pre {
    white-space: pre-wrap;
    overflow-wrap: break-word;
  }
}