/* Fiber Archive — tokens from DESIGN.md */

/* Local webfonts (no Google Fonts) — subsets from Fontsource */
@font-face {
  font-family: "Vazirmatn";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/vazirmatn-arabic-400.woff2") format("woff2");
  unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+0890-0891, U+0897-08E1, U+08E3-08FF, U+200C-200E, U+2010-2011, U+204F, U+2E41, U+FB50-FDFF, U+FE70-FE74, U+FE76-FEFC;
}
@font-face {
  font-family: "Vazirmatn";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/vazirmatn-latin-ext-400.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Vazirmatn";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/vazirmatn-latin-400.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Vazirmatn";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/assets/fonts/vazirmatn-arabic-600.woff2") format("woff2");
  unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+0890-0891, U+0897-08E1, U+08E3-08FF, U+200C-200E, U+2010-2011, U+204F, U+2E41, U+FB50-FDFF, U+FE70-FE74, U+FE76-FEFC;
}
@font-face {
  font-family: "Vazirmatn";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/assets/fonts/vazirmatn-latin-ext-600.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Vazirmatn";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/assets/fonts/vazirmatn-latin-600.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Vazirmatn";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/assets/fonts/vazirmatn-arabic-700.woff2") format("woff2");
  unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+0890-0891, U+0897-08E1, U+08E3-08FF, U+200C-200E, U+2010-2011, U+204F, U+2E41, U+FB50-FDFF, U+FE70-FE74, U+FE76-FEFC;
}
@font-face {
  font-family: "Vazirmatn";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/assets/fonts/vazirmatn-latin-ext-700.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Vazirmatn";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/assets/fonts/vazirmatn-latin-700.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Fraunces";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/assets/fonts/fraunces-latin-600.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Fraunces";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/assets/fonts/fraunces-latin-700.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Source Serif 4";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/source-serif-4-latin-400.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Source Serif 4";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/assets/fonts/source-serif-4-latin-600.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/ibm-plex-mono-latin-400.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/assets/fonts/ibm-plex-mono-latin-500.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --color-ink: #0b1220;
  --color-graphite: #1a2332;
  --color-fiber: #2ec4b6;
  --color-fiber-deep: #1a9e94;
  --color-paper: #f7f4ef;
  --color-slate: #8b95a8;
  --color-ink-soft: #2a3548;
  --color-status-ok: #3d9b6a;
  --color-status-wait: #c4922a;
  --color-danger: #c45c4a;

  --font-fa: "Vazirmatn", sans-serif;
  --font-en-display: "Fraunces", Georgia, serif;
  --font-en-body: "Source Serif 4", Georgia, serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  /* aliases */
  --font-display: var(--font-en-display);
  --font-body: var(--font-en-body);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --max-w: 72rem;
  --hero-min: min(100svh, 52rem);

  --focus: 0 0 0 3px color-mix(in srgb, var(--color-fiber) 55%, transparent);
}

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

html {
  scroll-behavior: smooth;
}

html[lang="fa"] {
  --font-display: var(--font-fa);
  --font-body: var(--font-fa);
}

html[lang="fa"],
html[lang="fa"] body {
  font-family: "Vazirmatn", var(--font-fa);
}

html[lang="fa"] .brand__text,
html[lang="fa"] h1,
html[lang="fa"] h2,
html[lang="fa"] h3 {
  font-family: "Vazirmatn", var(--font-fa);
}

html[lang="en"] {
  --font-display: var(--font-en-display);
  --font-body: var(--font-en-body);
}

html[lang="en"] h1,
html[lang="en"] h2,
html[lang="en"] .brand__text {
  font-family: var(--font-en-display);
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-ink-soft);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-fiber-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--color-ink);
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.skip-link {
  position: absolute;
  inset-inline-start: var(--space-4);
  top: -100px;
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--color-fiber);
  color: var(--color-ink);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space-4);
}

.wrap {
  width: min(100% - 2rem, var(--max-w));
  margin-inline: auto;
}

/* —— Site header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--color-ink) 92%, transparent);
  backdrop-filter: blur(10px);
  border-block-end: 1px solid color-mix(in srgb, var(--color-fiber) 18%, transparent);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
  min-height: 3.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-paper);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.02em;
  max-width: min(100%, 18rem);
}

.brand:hover {
  color: var(--color-fiber);
}

.brand__mark {
  width: 1.75rem;
  height: 1.75rem;
  flex-shrink: 0;
}

.brand__text {
  font-size: 0.95rem;
  line-height: 1.25;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin: 0;
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--color-paper) 28%, transparent);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-paper);
  cursor: pointer;
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 160ms ease, opacity 160ms ease;
}

.nav-toggle__bars {
  position: relative;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
}

.nav-toggle__bars::before {
  top: -6px;
}

.nav-toggle__bars::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a,
.nav .nav-link {
  color: color-mix(in srgb, var(--color-paper) 82%, var(--color-slate));
  text-decoration: none;
  font-size: 0.9375rem;
}

.nav a:hover,
.nav a[aria-current="page"],
.nav .nav-link:hover,
.nav .nav-link[aria-current="page"] {
  color: var(--color-fiber);
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid color-mix(in srgb, var(--color-slate) 45%, transparent);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.lang-toggle a {
  padding: 0.35rem 0.65rem;
  color: var(--color-slate);
  text-decoration: none;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.lang-toggle a[aria-current="true"] {
  background: var(--color-fiber);
  color: var(--color-ink);
}

/* —— Hero (CSS mesh + fiber ribbon) —— */
.hero {
  position: relative;
  min-height: var(--hero-min);
  display: grid;
  align-items: end;
  background: var(--color-ink);
  color: var(--color-paper);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 55% 45% at 18% 28%, color-mix(in srgb, var(--color-fiber) 28%, transparent), transparent 70%),
    radial-gradient(ellipse 50% 40% at 82% 18%, color-mix(in srgb, var(--color-fiber) 16%, transparent), transparent 68%),
    radial-gradient(ellipse 70% 55% at 55% 95%, color-mix(in srgb, var(--color-graphite) 90%, transparent), transparent 65%),
    linear-gradient(165deg, var(--color-ink) 0%, #0e1828 45%, var(--color-graphite) 100%);
}

.hero__bg::before,
.hero__bg::after {
  content: "";
  position: absolute;
  width: 42%;
  height: 100%;
  top: 0;
  opacity: 0.72;
  background:
    linear-gradient(
      105deg,
      transparent 0%,
      transparent 38%,
      color-mix(in srgb, var(--color-fiber) 55%, transparent) 39%,
      color-mix(in srgb, var(--color-fiber) 55%, transparent) 40.2%,
      transparent 41.2%,
      transparent 46%,
      color-mix(in srgb, var(--color-fiber) 40%, transparent) 47%,
      color-mix(in srgb, var(--color-fiber) 40%, transparent) 48%,
      transparent 49%,
      transparent 54%,
      color-mix(in srgb, var(--color-fiber) 28%, transparent) 55%,
      color-mix(in srgb, var(--color-fiber) 28%, transparent) 56%,
      transparent 57%
    );
  transform: skewX(-12deg);
  animation: ribbon-pulse 12s ease-in-out infinite;
}

.hero__bg::before {
  inset-inline-start: -6%;
}

.hero__bg::after {
  inset-inline-end: -8%;
  opacity: 0.45;
  animation-delay: -4s;
}

.hero__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    color-mix(in srgb, var(--color-ink) 40%, transparent) 0%,
    transparent 55%
  );
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-block: var(--space-8) var(--space-7);
  max-width: 42rem;
}

.hero__kicker {
  margin: 0 0 var(--space-4);
  font-size: 0.875rem;
  letter-spacing: 0.06em;
  color: var(--color-fiber);
  font-weight: 600;
  padding-block-end: var(--space-3);
  border-block-end: 1px solid color-mix(in srgb, var(--color-fiber) 55%, transparent);
  width: fit-content;
  max-width: 100%;
}

.hero h1 {
  margin: 0 0 var(--space-4);
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 7vw, 4.25rem);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-paper);
}

.hero__lead {
  margin: 0 0 var(--space-6);
  font-size: 1.25rem;
  line-height: 1.55;
  color: color-mix(in srgb, var(--color-paper) 82%, var(--color-slate));
  max-width: 36rem;
}

.hero__meta {
  margin: var(--space-5) 0 0;
  font-size: 0.9rem;
  color: var(--color-slate);
}

.hero__meta code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: color-mix(in srgb, var(--color-paper) 75%, var(--color-fiber));
  background: color-mix(in srgb, var(--color-ink) 45%, transparent);
  padding: 0.2em 0.45em;
  border-radius: 3px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.btn--primary {
  background: var(--color-fiber);
  color: var(--color-ink);
}

.btn--primary:hover {
  background: var(--color-fiber-deep);
  color: var(--color-paper);
}

.btn--ghost {
  background: transparent;
  color: var(--color-paper);
  border-color: color-mix(in srgb, var(--color-paper) 35%, transparent);
}

.btn--ghost:hover {
  border-color: var(--color-fiber);
  color: var(--color-fiber);
}

.btn--small {
  min-height: 2.25rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.8125rem;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(0.75rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ribbon-pulse {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 0.85;
  }
}

.hero__content > * {
  animation: rise-in 0.7s ease both;
}

.hero__content > *:nth-child(2) {
  animation-delay: 0.08s;
}

.hero__content > *:nth-child(3) {
  animation-delay: 0.16s;
}

.hero__content > *:nth-child(4) {
  animation-delay: 0.24s;
}

.hero__content > *:nth-child(5) {
  animation-delay: 0.32s;
}

/* —— Sections —— */
.section {
  padding-block: var(--space-7);
}

.section--ink {
  background: var(--color-graphite);
  color: color-mix(in srgb, var(--color-paper) 88%, var(--color-slate));
}

.section--ink h2,
.section--ink a {
  color: var(--color-paper);
}

.section--ink a:hover {
  color: var(--color-fiber);
}

.section__head {
  margin-bottom: var(--space-5);
  max-width: 40rem;
}

.section__head h2 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

.section--ink .section__head h2 {
  color: var(--color-paper);
}

.section__head p {
  margin: 0;
  color: var(--color-slate);
}

.section--ink .section__head p {
  color: var(--color-slate);
}

/* —— Archive table —— */
.archive {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.archive th,
.archive td {
  padding: 0.85rem 0.75rem;
  text-align: start;
  border-block-end: 1px solid color-mix(in srgb, var(--color-slate) 28%, transparent);
  vertical-align: top;
}

.archive th {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-slate);
  font-weight: 600;
  border-block-end-color: color-mix(in srgb, var(--color-fiber) 35%, transparent);
}

.archive tr:hover td {
  background: color-mix(in srgb, var(--color-fiber) 6%, transparent);
}

.archive code,
.code-inline {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: color-mix(in srgb, var(--color-graphite) 8%, transparent);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.2em 0.55em;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.badge::before {
  content: "";
  width: 0.45em;
  height: 0.45em;
  border-radius: 50%;
  background: currentColor;
}

.badge--ok {
  color: var(--color-status-ok);
  background: color-mix(in srgb, var(--color-status-ok) 14%, transparent);
}

.badge--wait {
  color: var(--color-status-wait);
  background: color-mix(in srgb, var(--color-status-wait) 14%, transparent);
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid color-mix(in srgb, var(--color-slate) 30%, transparent);
  border-radius: var(--radius-md);
  background: var(--color-paper);
  box-shadow: inset 3px 0 0 var(--color-fiber);
}

/* —— Speedtest / contact —— */
.cardless-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.cardless-list a {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.speed-chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.speed-chips__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--color-fiber) 55%, transparent);
  background: color-mix(in srgb, var(--color-fiber) 18%, transparent);
  color: var(--color-fiber);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.section--ink .speed-chips__btn {
  background: color-mix(in srgb, var(--color-fiber) 16%, transparent);
  color: var(--color-fiber);
  border-color: color-mix(in srgb, var(--color-fiber) 50%, transparent);
}

.speed-chips__btn:hover {
  background: var(--color-fiber);
  color: var(--color-ink);
  border-color: var(--color-fiber);
}

.disclaimer {
  font-size: 0.9rem;
  color: var(--color-slate);
  max-width: 48rem;
}

.disclaimer p {
  margin: 0 0 var(--space-3);
}

.soft-note {
  margin: 0 0 var(--space-5);
  color: var(--color-status-wait);
  font-size: 0.95rem;
}

/* —— Footer —— */
.site-footer {
  padding-block: var(--space-6);
  background: var(--color-ink);
  color: var(--color-slate);
  font-size: 0.875rem;
}

.site-footer a {
  color: var(--color-fiber);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  align-items: baseline;
}

/* —— Guides —— */
.guide-layout {
  display: grid;
  gap: var(--space-6);
  padding-block: var(--space-6);
}

@media (min-width: 900px) {
  .guide-layout {
    grid-template-columns: 14rem minmax(0, 1fr);
    align-items: start;
  }
}

.guide-nav {
  position: sticky;
  top: 4.25rem;
  padding: var(--space-4);
  background: var(--color-graphite);
  border-radius: var(--radius-md);
  border-inline-start: 3px solid var(--color-fiber);
}

.guide-nav__toggle {
  display: none;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin: 0;
  padding: 0.85rem 1rem;
  border: 1px solid color-mix(in srgb, var(--color-fiber) 35%, transparent);
  border-radius: var(--radius-md);
  background: var(--color-graphite);
  color: var(--color-paper);
  font-family: var(--font-fa);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-align: start;
}

.guide-nav__toggle-icon {
  flex: 0 0 auto;
  width: 0.65rem;
  height: 0.65rem;
  border-inline-end: 2px solid currentColor;
  border-block-end: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 160ms ease;
}

.guide-nav.is-open .guide-nav__toggle-icon {
  transform: rotate(225deg);
}

.guide-nav h2 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-fiber);
}

.guide-nav ul + h2 {
  margin-top: var(--space-4);
}

.guide-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.guide-nav a {
  color: color-mix(in srgb, var(--color-paper) 80%, var(--color-slate));
  text-decoration: none;
  font-size: 0.9rem;
}

.guide-nav a:hover,
.guide-nav a[aria-current="page"] {
  color: var(--color-fiber);
}

/* Mobile: sidebar sits below header hamburger; collapsed by default */
@media (max-width: 899px) {
  .guide-nav {
    position: static;
    top: auto;
    padding: 0;
    background: transparent;
    border-inline-start: none;
    border-radius: 0;
  }

  .guide-nav__toggle {
    display: inline-flex;
  }

  .guide-nav__panel {
    margin-top: var(--space-3);
    padding: var(--space-4);
    background: var(--color-graphite);
    border-radius: var(--radius-md);
    border-inline-start: 3px solid var(--color-fiber);
  }

  .guide-nav:not(.is-open) .guide-nav__panel {
    display: none;
  }

  /* Before JS enhances: keep sidebar below the fold feel, not sticky */
  .guide-nav:not([data-enhanced]) {
    padding: var(--space-4);
    background: var(--color-graphite);
    border-radius: var(--radius-md);
    border-inline-start: 3px solid var(--color-fiber);
  }
}

.guide-main h1 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

.guide-main .lead {
  margin: 0 0 var(--space-5);
  color: var(--color-slate);
  max-width: 40rem;
}

.guide-main h2 {
  margin: var(--space-6) 0 var(--space-3);
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-ink);
}

.guide-main ol,
.guide-main ul {
  padding-inline-start: 1.25rem;
}

.guide-main li {
  margin-block: 0.4rem;
}

.guide-main p {
  max-width: 42rem;
}

.guide-main .prose p + p {
  margin-top: var(--space-4);
}

/* —— Mirror facts panel (Fiber Archive) —— */
.mirror-facts {
  margin: var(--space-5) 0 var(--space-6);
  padding: var(--space-5);
  background: var(--color-ink);
  color: color-mix(in srgb, var(--color-paper) 88%, var(--color-slate));
  border-radius: var(--radius-md);
  border-inline-start: 3px solid var(--color-fiber);
  display: grid;
  gap: var(--space-5);
}

.mirror-facts__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--color-paper);
  letter-spacing: -0.01em;
}

.mirror-facts__grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
}

.mirror-facts__item {
  display: grid;
  gap: 0.25rem;
}

.mirror-facts__label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-fiber);
}

.mirror-facts__value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-paper);
  word-break: break-word;
}

.mirror-facts__value--plain {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.45;
}

.mirror-facts__note {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--color-slate);
  max-width: none;
}

.mirror-facts__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.mirror-facts .btn {
  min-height: 48px;
}

.mirror-facts .btn--primary {
  background: var(--color-fiber);
  color: var(--color-ink);
}

.mirror-facts .btn--primary:hover {
  background: var(--color-fiber-deep);
  color: var(--color-paper);
}

.mirror-facts .btn--ghost {
  border-color: color-mix(in srgb, var(--color-fiber) 45%, transparent);
  color: var(--color-fiber);
}

.mirror-facts .btn--inactive,
.btn--inactive {
  opacity: 0.45;
  pointer-events: none;
  cursor: not-allowed;
}

.related-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.related-links a {
  font-size: 0.95rem;
}

/* —— Code / copy —— */
.code-block {
  position: relative;
  margin: var(--space-4) 0;
  background: var(--color-graphite);
  color: var(--color-paper);
  border-radius: var(--radius-md);
  border-inline-start: 3px solid var(--color-fiber);
  overflow: hidden;
}

[dir="rtl"] .code-block {
  border-inline-start: 3px solid var(--color-fiber);
  border-inline-end: none;
}

.code-block pre {
  margin: 0;
  padding: var(--space-5) var(--space-4);
  padding-inline-end: 5.5rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.55;
  direction: ltr;
  unicode-bidi: isolate;
  text-align: start;
}

.code-block__copy {
  position: absolute;
  inset-block-start: var(--space-3);
  inset-inline-end: var(--space-3);
  background: color-mix(in srgb, var(--color-ink) 70%, transparent);
  color: var(--color-fiber);
  border: 1px solid color-mix(in srgb, var(--color-fiber) 40%, transparent);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.65rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}

[dir="rtl"] .code-block__copy {
  inset-inline-end: auto;
  inset-inline-start: var(--space-3);
}

.code-block__copy:hover,
.code-block__copy[data-copied="true"] {
  background: var(--color-fiber);
  color: var(--color-ink);
  border-color: var(--color-fiber);
}

/* —— Page hero (guides) —— */
.page-hero {
  background: var(--color-ink);
  color: var(--color-paper);
  padding-block: var(--space-6);
  border-block-end: 1px solid color-mix(in srgb, var(--color-fiber) 25%, transparent);
}

.page-hero .wrap {
  display: grid;
  gap: var(--space-2);
}

.page-hero .crumb {
  font-size: 0.8125rem;
  color: var(--color-slate);
}

.page-hero .crumb a {
  color: var(--color-fiber);
  text-decoration: none;
}

@media (max-width: 640px) {
  .archive th:nth-child(3),
  .archive td:nth-child(3),
  .archive th:nth-child(4),
  .archive td:nth-child(4) {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    z-index: 60;
  }

  .site-header__inner {
    position: relative;
    flex-wrap: nowrap;
  }

  .nav {
    display: none;
    position: absolute;
    inset-inline: 0;
    top: calc(100% + 0.35rem);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-3);
    background: var(--color-graphite);
    border: 1px solid color-mix(in srgb, var(--color-fiber) 28%, transparent);
    border-radius: var(--radius-md);
    box-shadow: 0 12px 32px color-mix(in srgb, var(--color-ink) 55%, transparent);
  }

  .nav.is-open {
    display: flex;
  }

  .nav .nav-link,
  .nav a.nav-hide-sm {
    display: block;
    padding: 0.85rem 0.75rem;
    border-block-end: 1px solid color-mix(in srgb, var(--color-slate) 25%, transparent);
  }

  .nav .lang-toggle {
    margin-block-start: var(--space-3);
    align-self: flex-start;
  }

  .brand__text {
    font-size: 0.82rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-toggle__bars,
  .nav-toggle__bars::before,
  .nav-toggle__bars::after,
  .speed-chips__btn {
    transition: none;
  }
}