/* ==========================================================================
   Taha Jahanbani Kondori — site styles
   Industrial minimalism: graphite / off-white / steel, one muted rust accent.
   ========================================================================== */

/* ---------- Fonts ---------- */
@font-face {
  font-family: "InterSite";
  src: local("Inter"), local("Inter Regular"), url("/fonts/inter-Regular.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2190-2199, U+2212, U+2215;
}
@font-face {
  font-family: "InterSite";
  src: local("Inter Medium"), local("Inter-Medium"), url("/fonts/inter-Medium.woff") format("woff");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2190-2199, U+2212, U+2215;
}
@font-face {
  font-family: "InterSite";
  src: local("Inter SemiBold"), local("Inter-SemiBold"), url("/fonts/inter-SemiBold.woff") format("woff");
  font-weight: 600 700;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2190-2199, U+2212, U+2215;
}

/* ---------- Tokens ---------- */
:root {
  --bg: #f3f2ee;
  --surface: #faf9f6;
  --surface-2: #eae9e4;
  --ink: #1d2023;
  --ink-2: #4c535a;
  --ink-3: #8a9096;
  --rule: #d6d5cf;
  --rule-strong: #a6a9aa;
  --accent: #9e5030;
  --accent-soft: rgba(158, 80, 48, 0.1);
  --on-ink: #f3f2ee;
  --grid: rgba(29, 32, 35, 0.05);
  --grid-major: rgba(29, 32, 35, 0.08);
  --header-bg: rgba(243, 242, 238, 0.88);
  --shadow: 0 1px 0 rgba(29, 32, 35, 0.04), 0 10px 30px -18px rgba(29, 32, 35, 0.25);

  --font-latin: "InterSite", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-fa: "InterSite", "Vazirmatn", "Vazir", "Estedad", "Shabnam", "Segoe UI", Tahoma, "Noto Sans Arabic", "Geeza Pro", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --font: var(--font-latin);
  --lh: 1.6;
  --lh-tight: 1.12;
  --ls-caps: 0.08em;
  --ls-tight: -0.022em;

  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --wrap: 74rem;
  --rail: 3.5rem;
  --header-h: 4rem;
  --radius: 3px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  color-scheme: light;
}

:root[lang="fa"] {
  --font: var(--font-fa);
  --lh: 1.95;
  --lh-tight: 1.45;
  --ls-caps: 0;
  --ls-tight: 0;
}


:root[data-theme="dark"] {
  --bg: #131517;
  --surface: #181b1e;
  --surface-2: #1e2225;
  --ink: #e9e7e2;
  --ink-2: #a9afb5;
  --ink-3: #737a81;
  --rule: #2a2f33;
  --rule-strong: #4a5156;
  --accent: #d38c64;
  --accent-soft: rgba(211, 140, 100, 0.12);
  --on-ink: #131517;
  --grid: rgba(233, 231, 226, 0.035);
  --grid-major: rgba(233, 231, 226, 0.06);
  --header-bg: rgba(19, 21, 23, 0.86);
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.3), 0 12px 32px -18px rgba(0, 0, 0, 0.7);
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131517;
    --surface: #181b1e;
    --surface-2: #1e2225;
    --ink: #e9e7e2;
    --ink-2: #a9afb5;
    --ink-3: #737a81;
    --rule: #2a2f33;
    --rule-strong: #4a5156;
    --accent: #d38c64;
    --accent-soft: rgba(211, 140, 100, 0.12);
    --on-ink: #131517;
    --grid: rgba(233, 231, 226, 0.035);
    --grid-major: rgba(233, 231, 226, 0.06);
    --header-bg: rgba(19, 21, 23, 0.86);
    --shadow: 0 1px 0 rgba(0, 0, 0, 0.3), 0 12px 32px -18px rgba(0, 0, 0, 0.7);
    color-scheme: dark;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  background: var(--bg);
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1rem;
  line-height: var(--lh);
  font-feature-settings: "kern", "calt";
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
:root[lang="fa"] body { font-size: 1.0625rem; }

main { flex: 1; outline: none; }

h1, h2, h3, h4 { margin: 0; line-height: var(--lh-tight); font-weight: 600; letter-spacing: var(--ls-tight); text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul, ol { margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
dl, dd { margin: 0; }

::selection { background: var(--accent); color: var(--on-ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}

[id] { scroll-margin-top: calc(var(--header-h) + 1.5rem); }

bdi.ltr { unicode-bidi: isolate; direction: ltr; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}
:root:not(.js) .js-only { display: none !important; }

.wrap {
  width: min(var(--wrap), 100% - 2 * var(--gutter));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  inset-inline-start: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
  border-radius: var(--radius);
}
.skip-link:focus { top: 0.75rem; }

/* ---------- Drafting grid ---------- */
.grid-bg,
.hero,
.page-hero,
.section-adicon {
  position: relative;
  isolation: isolate;
}
.hero::before,
.page-hero::before,
.section-adicon::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  background-position: -1px -1px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 55%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, #000 55%, transparent 100%);
  pointer-events: none;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--header-bg);
  -webkit-backdrop-filter: saturate(1.2) blur(10px);
  backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.header-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem 2rem;
  min-height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 1.5px solid var(--ink);
  font-family: var(--font-latin);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  direction: ltr;
}
.brand-name { font-size: 0.95rem; }

.site-nav ul {
  display: flex;
  justify-content: flex-end;
  gap: 0.25rem 1.75rem;
  list-style: none;
}
.site-nav a {
  position: relative;
  display: inline-block;
  padding: 0.5rem 0;
  font-size: 0.92rem;
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0.15rem;
  height: 2px;
  background: var(--accent);
}

.header-tools { display: flex; align-items: center; gap: 0.5rem; }
.lang-switch {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0 0.85rem;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  font-size: 0.88rem;
  text-decoration: none;
  transition: border-color 0.2s, background-color 0.2s;
}
.lang-switch[lang="fa"] { font-family: var(--font-fa); }
.lang-switch[lang="en"] { font-family: var(--font-latin); }
.lang-switch:hover { border-color: var(--ink); background: var(--surface); }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.2s, background-color 0.2s;
}
.icon-btn:hover { border-color: var(--ink); background: var(--surface); }
:root:not(.js) .theme-toggle { display: none; }
.theme-icon { display: none; }
.theme-icon-moon { display: block; }
:root[data-theme="dark"] .theme-icon-moon { display: none; }
:root[data-theme="dark"] .theme-icon-sun { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-icon-moon { display: none; }
  :root:not([data-theme="light"]) .theme-icon-sun { display: block; }
}

@media (max-width: 47.99em) {
  :root { --header-h: 6.4rem; }
  .header-inner {
    grid-template-columns: 1fr auto;
    gap: 0;
    padding-top: 0.6rem;
  }
  .site-nav { grid-column: 1 / -1; grid-row: 2; margin-inline: -0.25rem; }
  .site-nav ul { justify-content: flex-start; gap: 0 1.25rem; }
  .site-nav a { padding: 0.65rem 0.25rem; min-height: 2.75rem; }
  .header-tools { grid-column: 2; grid-row: 1; }
}

/* ---------- Eyebrows / section heads ---------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  font-size: 0.75rem;
  color: var(--ink-2);
}
:root[lang="en"] .eyebrow { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: var(--ls-caps); }
:root[lang="fa"] .eyebrow { font-size: 0.85rem; }
.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 1px;
  background: var(--rule-strong);
}
.eyebrow-idx { color: var(--accent); font-family: var(--font-mono); font-weight: 500; }
:root[lang="fa"] .eyebrow-idx { font-family: var(--font-fa); }
.eyebrow-idx + .eyebrow-text { padding-inline-start: 0.75rem; border-inline-start: 1px solid var(--rule-strong); }

.section { padding-block: clamp(4rem, 9vw, 7rem); border-top: 1px solid var(--rule); position: relative; }
.section-tight { padding-top: clamp(2rem, 5vw, 3rem); border-top: 0; }
.section::after {
  /* fine technical tick marking the section boundary */
  content: "";
  position: absolute;
  top: -4px;
  inset-inline-start: max(var(--gutter), calc((100% - var(--wrap)) / 2));
  width: 1px;
  height: 7px;
  background: var(--ink-2);
}
.section-head { max-width: 46rem; margin-bottom: clamp(2rem, 5vw, 3.25rem); }
.section-head h2 { font-size: clamp(1.75rem, 3.6vw, 2.6rem); }
.lede { margin-top: 1rem; font-size: clamp(1.02rem, 1.4vw, 1.15rem); color: var(--ink-2); max-width: 44rem; }
.section-more { margin-top: 2.25rem; }

/* ---------- Buttons & links ---------- */
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2.25rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 3rem;
  padding: 0.7rem 1.3rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: var(--accent); color: var(--on-ink); }
.btn-secondary { border-color: var(--rule-strong); color: var(--ink); background: transparent; }
.btn-secondary:hover { border-color: var(--ink); background: var(--surface); }
.btn-small { min-height: 2.5rem; padding: 0.45rem 0.9rem; font-size: 0.88rem; }
.btn .arrow, .text-link .arrow, .project-more .arrow { display: inline-flex; transition: transform 0.25s var(--ease); }
.btn:hover .arrow, .text-link:hover .arrow { transform: translateX(3px); }
[dir="rtl"] .arrow svg { transform: scaleX(-1); }
[dir="rtl"] .btn:hover .arrow, [dir="rtl"] .text-link:hover .arrow { transform: translateX(-3px); }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--rule-strong);
}
.text-link:hover { text-decoration-color: var(--accent); }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(3.5rem, 9vw, 7.5rem) clamp(3.5rem, 8vw, 6rem); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: center;
}
.hero-name {
  font-size: clamp(2.5rem, 6.4vw, 4.75rem);
  letter-spacing: var(--ls-tight);
  line-height: 1.02;
}
:root[lang="fa"] .hero-name { line-height: 1.3; font-size: clamp(2.3rem, 6vw, 4.25rem); }
.hero-headline {
  margin-top: 1.1rem;
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  font-weight: 500;
  color: var(--accent);
}
.hero-intro { margin-top: 1.75rem; max-width: 38rem; display: grid; gap: 1rem; color: var(--ink-2); font-size: 1.05rem; }

.hero-aside { display: grid; gap: 1.25rem; }
.drawing-wrap {
  margin: 0;
  padding: 1rem;
  border: 1px solid var(--rule);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}
.drawing { width: 100%; height: auto; direction: ltr; }
.drawing .d-frame { fill: none; stroke: var(--rule-strong); stroke-width: 1; }
.drawing .d-center { fill: none; stroke: var(--ink-3); stroke-width: 0.75; stroke-dasharray: 10 3 2 3; }
.drawing .d-part { fill: color-mix(in srgb, var(--accent) 6%, transparent); stroke: var(--ink); stroke-width: 1.5; }
.drawing .d-dim { fill: none; stroke: var(--accent); stroke-width: 0.9; }
.drawing .d-block { fill: none; stroke: var(--rule-strong); stroke-width: 1; }
.drawing text { fill: var(--ink-2); stroke: none; font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.06em; }
.drawing .d-text text { fill: var(--accent); }

.spec {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--rule);
  border-inline-start: 1px solid var(--rule);
}
.spec > div { padding: 0.75rem 0.9rem; border-bottom: 1px solid var(--rule); border-inline-end: 1px solid var(--rule); }
.spec dt { font-size: 0.72rem; color: var(--ink-2); }
:root[lang="en"] .spec dt { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: var(--ls-caps); }
:root[lang="fa"] .spec dt { font-size: 0.8rem; }
.spec dd { margin-top: 0.2rem; font-size: 0.92rem; font-weight: 500; }

@media (prefers-reduced-motion: no-preference) {
  .hero-copy > * { animation: rise 0.7s var(--ease) both; }
  .hero-copy > :nth-child(2) { animation-delay: 0.05s; }
  .hero-copy > :nth-child(3) { animation-delay: 0.12s; }
  .hero-copy > :nth-child(4) { animation-delay: 0.18s; }
  .hero-copy > :nth-child(5) { animation-delay: 0.24s; }
  .drawing .d-part, .drawing .d-dim { stroke-dasharray: 900; stroke-dashoffset: 900; animation: draw 2.2s 0.2s var(--ease) forwards; }
  .drawing .d-dim { animation-delay: 0.9s; animation-duration: 1.6s; }
  .drawing .d-text, .drawing .d-block text { animation: fade 0.8s 1.6s both; }
}
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

@media (max-width: 59.99em) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-aside { max-width: 34rem; }
}

/* ---------- Expertise ---------- */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  list-style: none;
  border-top: 1px solid var(--rule-strong);
}
.expertise-item {
  padding: 1.5rem 1.5rem 1.75rem;
  padding-inline-start: 0;
  border-inline-end: 1px solid var(--rule);
  position: relative;
}
.expertise-item + .expertise-item { padding-inline-start: 1.5rem; }
.expertise-item:last-child { border-inline-end: 0; }
.expertise-item.is-primary::before {
  content: "";
  position: absolute;
  top: -1px;
  inset-inline: 0 1.5rem;
  height: 2px;
  background: var(--accent);
}
.expertise-code { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 1.5rem; }
.expertise-item h3 { font-size: 1.15rem; }
.expertise-tag { margin-top: 0.35rem; font-size: 0.8rem; color: var(--ink-2); }
:root[lang="en"] .expertise-tag { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: var(--ls-caps); font-size: 0.7rem; }
.expertise-item > p:last-child { margin-top: 1rem; color: var(--ink-2); font-size: 0.95rem; }

@media (max-width: 63.99em) {
  .expertise-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .expertise-item, .expertise-item + .expertise-item { padding-inline: 0 1.5rem; border-inline-end: 0; border-bottom: 1px solid var(--rule); }
  .expertise-item:nth-child(even) { padding-inline: 1.5rem 0; border-inline-start: 1px solid var(--rule); }
}
@media (max-width: 37.99em) {
  .expertise-grid { grid-template-columns: 1fr; }
  .expertise-item, .expertise-item + .expertise-item, .expertise-item:nth-child(even) { padding-inline: 0; border-inline-start: 0; }
  .expertise-item.is-primary::before { inset-inline: 0; }
}

/* ---------- Projects ---------- */
.project-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.5rem 1.35rem;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.project-card:hover { border-color: var(--rule-strong); transform: translateY(-2px); box-shadow: var(--shadow); }
.project-card:focus-within { border-color: var(--ink-2); }
.project-card-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 2.25rem; }
.project-idx { font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-2); }
:root[lang="fa"] .project-idx { font-family: var(--font-fa); }
.project-name { font-size: 1.45rem; }
.project-name a { text-decoration: none; }
.stretched::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.stretched:focus-visible { outline: none; }
.stretched:focus-visible::after { outline: 2px solid var(--accent); outline-offset: 3px; }
.project-kind { margin-top: 0.4rem; font-size: 0.85rem; color: var(--accent); font-weight: 500; }
.project-summary { margin-top: 1rem; color: var(--ink-2); font-size: 0.95rem; }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1.25rem; list-style: none; }
.tag-list li {
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  font-size: 0.75rem;
  color: var(--ink-2);
  line-height: 1.6;
}
.project-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 1.75rem;
  font-size: 0.88rem;
  font-weight: 500;
}
.project-card:hover .project-more .arrow { transform: translateX(3px); }
[dir="rtl"] .project-card:hover .project-more .arrow { transform: translateX(-3px); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  font-size: 0.75rem;
  line-height: 1.5;
  white-space: nowrap;
  color: var(--ink);
}
:root[lang="en"] .chip { font-family: var(--font-mono); letter-spacing: 0.03em; }
.chip-dot { width: 0.45rem; height: 0.45rem; border-radius: 50%; background: var(--accent); }

@media (max-width: 63.99em) { .project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 41.99em) { .project-grid { grid-template-columns: 1fr; } }

/* ---------- ADICON ---------- */
.section-adicon { background: var(--surface-2); }
.section-adicon::before { -webkit-mask-image: none; mask-image: none; opacity: 0.7; }
.adicon-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2.5rem, 6vw, 5rem); align-items: start; }
.adicon-copy .section-head { margin-bottom: 0; }
.adicon-copy .section-head h2 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
:root[lang="en"] .adicon-copy .section-head h2 { letter-spacing: 0.04em; }
.adicon-copy .lede { margin-top: 1.5rem; color: var(--ink); }
.adicon-role { margin: 1.25rem 0 2rem; font-size: 0.85rem; color: var(--ink-2); }
:root[lang="en"] .adicon-role { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: var(--ls-caps); font-size: 0.75rem; }
.adicon-areas { list-style: none; border-top: 1px solid var(--rule-strong); }
.adicon-areas li { display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; padding: 1.35rem 0; border-bottom: 1px solid var(--rule); }
.area-code { font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent); padding-top: 0.25rem; }
:root[lang="fa"] .area-code { font-family: var(--font-fa); }
.adicon-areas h3 { font-size: 1.1rem; }
.adicon-areas p { margin-top: 0.35rem; color: var(--ink-2); font-size: 0.95rem; }
@media (max-width: 55.99em) { .adicon-grid { grid-template-columns: 1fr; } }

/* ---------- Timeline (CV preview) ---------- */
.timeline { list-style: none; border-top: 1px solid var(--rule-strong); max-width: 56rem; }
.timeline-item { display: grid; grid-template-columns: 14rem 1fr; gap: 1.5rem; padding: 1.5rem 0; border-bottom: 1px solid var(--rule); }
.timeline-period { font-size: 0.85rem; color: var(--ink-2); padding-top: 0.2rem; }
:root[lang="en"] .timeline-period { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.02em; }
.timeline-item h3 { font-size: 1.15rem; }
.timeline-item h3 a { text-decoration-color: var(--rule-strong); }
.timeline-item h3 a:hover { text-decoration-color: var(--accent); }
.timeline-item p:not(.timeline-period) { margin-top: 0.4rem; color: var(--ink-2); }
.at { color: var(--ink-3); font-weight: 400; }
@media (max-width: 41.99em) { .timeline-item { grid-template-columns: 1fr; gap: 0.35rem; } }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(15rem, 100%), 1fr)); gap: 0.75rem; list-style: none; }
.contact-card {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.9rem;
  align-items: center;
  min-height: 4.25rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}
.contact-card:hover { border-color: var(--ink-2); }
.contact-icon { grid-row: 1 / span 2; display: grid; place-items: center; width: 2.5rem; height: 2.5rem; border: 1px solid var(--rule); color: var(--accent); border-radius: 2px; }
.contact-label { font-weight: 500; font-size: 0.95rem; }
.contact-value { font-size: 0.82rem; color: var(--ink-2); overflow-wrap: anywhere; text-align: start; unicode-bidi: isolate; }
[dir="rtl"] .contact-value { text-align: end; }
.contact-empty {
  max-width: 44rem;
  padding: 1.25rem 1.4rem;
  border: 1px dashed var(--rule-strong);
  border-radius: var(--radius);
  color: var(--ink-2);
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero { padding-block: clamp(3rem, 8vw, 5.5rem) clamp(2.5rem, 6vw, 4rem); border-bottom: 1px solid var(--rule); }
.page-hero h1 { font-size: clamp(2.3rem, 5.5vw, 3.9rem); }
:root[lang="fa"] .page-hero h1 { line-height: 1.35; }
.breadcrumb { margin-bottom: 1.75rem; font-size: 0.85rem; color: var(--ink-2); }
.breadcrumb a { text-decoration-color: var(--rule-strong); }

/* ---------- Case study ---------- */
.case-kind { margin-top: 0.75rem; font-size: 1.05rem; font-weight: 500; color: var(--accent); }
.case-status { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 0.9rem; margin-top: 1.5rem; font-size: 0.9rem; color: var(--ink-2); }
.case-grid {
  display: grid;
  grid-template-columns: minmax(16rem, 20rem) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  align-items: start;
}
.case-aside { display: grid; gap: 1.25rem; position: sticky; top: calc(var(--header-h) + 1.5rem); }
.panel { padding: 1.25rem; border: 1px solid var(--rule); background: var(--surface); border-radius: var(--radius); }
.panel-title { font-size: 0.75rem; font-weight: 500; color: var(--ink-2); margin-bottom: 1rem; }
:root[lang="en"] .panel-title { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: var(--ls-caps); }
:root[lang="fa"] .panel-title { font-size: 0.85rem; }
.facts > div { display: grid; gap: 0.15rem; padding: 0.6rem 0; border-top: 1px solid var(--rule); }
.facts > div:first-child { border-top: 0; padding-top: 0; }
.facts dt { font-size: 0.78rem; color: var(--ink-2); }
.facts dd { font-size: 0.93rem; font-weight: 500; }
.module-map { list-style: none; display: grid; gap: 0.5rem; }
.module-map li { display: grid; grid-template-columns: 2rem 1fr; align-items: baseline; padding: 0.55rem 0.7rem; border: 1px solid var(--rule); border-radius: 2px; font-size: 0.9rem; background: var(--bg); }
.module-idx { font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent); }
:root[lang="fa"] .module-idx { font-family: var(--font-fa); font-size: 0.8rem; }
.panel-note { margin-top: 0.85rem; font-size: 0.78rem; color: var(--ink-2); }

.prose { max-width: 42rem; }
.prose section + section { margin-top: 2.75rem; }
.prose h2 {
  font-size: 1.35rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  margin-bottom: 1rem;
}
.prose p { color: var(--ink); font-size: 1.05rem; }
.prose p + p { margin-top: 1rem; }
.prose ul { padding-inline-start: 1.25rem; margin-top: 1rem; }
.scope { padding: 1.4rem 1.5rem; border: 1px solid var(--rule-strong); border-inline-start: 3px solid var(--accent); background: var(--accent-soft); border-radius: var(--radius); }
.prose .scope h2 { border-top: 0; padding-top: 0; font-size: 1.1rem; }
.scope-note { margin-top: 0.85rem; font-size: 0.85rem !important; color: var(--ink-2) !important; }

.pager { display: grid; grid-template-columns: 1fr auto 1fr; gap: 1rem; padding-block: 2rem clamp(3rem, 7vw, 5rem); border-top: 1px solid var(--rule); }
.pager-link { display: grid; gap: 0.2rem; padding: 0.75rem 0; text-decoration: none; }
.pager-next { text-align: end; }
.pager-index { align-self: center; text-align: center; padding-inline: 1rem; }
.pager-label { font-size: 0.78rem; color: var(--ink-2); }
:root[lang="en"] .pager-label { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: var(--ls-caps); font-size: 0.7rem; }
.pager-name { font-size: 1.15rem; font-weight: 600; }
.pager-link:hover .pager-name, .pager-link:hover .pager-label { color: var(--accent); }

@media (max-width: 55.99em) {
  .case-grid { grid-template-columns: 1fr; }
  .case-aside { position: static; order: 2; }
}
@media (max-width: 37.99em) {
  .pager { grid-template-columns: 1fr 1fr; }
  .pager-index { grid-column: 1 / -1; grid-row: 2; }
}

/* ---------- CV ---------- */
.cv-wrap { padding-block: clamp(2rem, 5vw, 3.5rem) clamp(3.5rem, 8vw, 6rem); }
.cv-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.5rem; }
.cv-toolbar .eyebrow { margin: 0; }
.cv-sheet { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: clamp(1.5rem, 5vw, 3.5rem); box-shadow: var(--shadow); }
.cv-head { padding-bottom: 1.75rem; border-bottom: 2px solid var(--ink); }
.cv-head h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
.cv-headline { margin-top: 0.5rem; font-size: 1.15rem; font-weight: 500; color: var(--accent); }
.cv-alt { margin-top: 0.4rem; font-size: 0.92rem; color: var(--ink-2); }
.cv-links { display: flex; flex-wrap: wrap; gap: 0.4rem 1.75rem; margin-top: 1.1rem; list-style: none; font-size: 0.9rem; }
.cv-links-k { color: var(--ink-2); margin-inline-end: 0.35rem; }
:root[lang="en"] .cv-links-k { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: var(--ls-caps); font-size: 0.72rem; }
.cv-body { display: grid; grid-template-columns: minmax(0, 1fr) minmax(13rem, 17rem); gap: clamp(1.75rem, 5vw, 3.5rem); margin-top: 2rem; }
.cv-section + .cv-section { margin-top: 2.25rem; }
.cv-section h2 { font-size: 0.78rem; font-weight: 600; color: var(--accent); padding-bottom: 0.5rem; border-bottom: 1px solid var(--rule); margin-bottom: 1.1rem; }
:root[lang="en"] .cv-section h2 { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.1em; }
:root[lang="fa"] .cv-section h2 { font-size: 0.95rem; }
.cv-role + .cv-role { margin-top: 1.6rem; }
.cv-role-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 0.25rem 1rem; }
.cv-role h3 { font-size: 1.1rem; }
.cv-role h3 a { text-decoration-color: var(--rule-strong); }
.cv-period { font-size: 0.85rem; color: var(--ink-2); white-space: nowrap; }
:root[lang="en"] .cv-period { font-family: var(--font-mono); font-size: 0.8rem; }
.cv-note { margin-top: 0.2rem; font-size: 0.8rem; color: var(--ink-2); }
.cv-role ul, .cv-skill ul, .cv-plain { margin-top: 0.6rem; padding-inline-start: 1.1rem; display: grid; gap: 0.3rem; font-size: 0.95rem; }
.cv-role li::marker, .cv-skill li::marker { color: var(--ink-3); }
.cv-projects { list-style: none; display: grid; gap: 1rem; }
.cv-projects h3 { font-size: 1rem; display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; }
.cv-projects p { margin-top: 0.25rem; font-size: 0.92rem; color: var(--ink-2); }
.cv-tag { font-size: 0.7rem; font-weight: 500; padding: 0.05rem 0.5rem; border: 1px solid var(--rule-strong); border-radius: 999px; color: var(--ink-2); }
:root[lang="en"] .cv-tag { font-family: var(--font-mono); }
.cv-skill + .cv-skill { margin-top: 1.25rem; }
.cv-skill h3 { font-size: 0.95rem; }
.cv-side .cv-skill ul { font-size: 0.9rem; color: var(--ink-2); }
.cv-foot { margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--rule); font-size: 0.78rem; color: var(--ink-2); }
@media (max-width: 47.99em) { .cv-body { grid-template-columns: 1fr; } }

/* ---------- 404 ---------- */
.nf { min-height: 55vh; border-bottom: 0; }
.nf-links { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; list-style: none; }
.nf-links a { display: inline-flex; align-items: center; min-height: 2.75rem; padding: 0 1.1rem; border: 1px solid var(--rule-strong); border-radius: var(--radius); text-decoration: none; }
.nf-links a:hover { border-color: var(--ink); background: var(--surface); }
.nf-other { margin-top: 3.5rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); color: var(--ink-2); }
.nf-other[lang="fa"] { font-family: var(--font-fa); }
.nf-other[lang="en"] { font-family: var(--font-latin); }
.nf-other .nf-links { margin-top: 1rem; }
.nf-other .nf-links a { min-height: 2.5rem; font-size: 0.9rem; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--rule); background: var(--surface-2); }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2rem; padding-block: 3rem 2rem; }
.footer-name { font-weight: 600; }
.footer-tag { margin-top: 0.35rem; font-size: 0.85rem; color: var(--ink-2); }
.footer-head { font-size: 0.75rem; color: var(--ink-2); margin-bottom: 0.75rem; }
:root[lang="en"] .footer-head { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: var(--ls-caps); font-size: 0.7rem; }
.footer-list { list-style: none; display: grid; gap: 0.15rem; }
.footer-list a { display: inline-flex; align-items: center; min-height: 2rem; font-size: 0.92rem; text-decoration: none; color: var(--ink); }
.footer-list a:hover { color: var(--accent); }
.ext { margin-inline-start: 0.25rem; font-size: 0.8em; color: var(--ink-2); }
.footer-legal { grid-column: 1 / -1; padding-top: 1.5rem; border-top: 1px solid var(--rule); font-size: 0.8rem; color: var(--ink-2); }
@media (max-width: 41.99em) { .footer-inner { grid-template-columns: 1fr 1fr; } .footer-id { grid-column: 1 / -1; } }

/* ---------- Connect Bar ---------- */
/* Desktop: slim vertical rail fixed to the PHYSICAL right edge in both directions. */
.connect-rail {
  position: fixed;
  top: 50%;
  right: 0;
  left: auto;
  z-index: 45;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  width: var(--rail);
  padding: 0.5rem 0.35rem;
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-right: 0;
  border-radius: var(--radius) 0 0 var(--radius);
  box-shadow: var(--shadow);
  direction: ltr;
}
.connect-rail::before,
.connect-rail::after {
  content: "";
  display: block;
  width: 1px;
  height: 0.9rem;
  margin: 0.15rem auto;
  background: var(--rule-strong);
}
.connect-link {
  position: relative;
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 2px;
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}
.connect-link:hover,
.connect-link:focus-visible { color: var(--accent); background: var(--accent-soft); }
.connect-tip {
  position: absolute;
  right: calc(100% + 0.75rem);
  top: 50%;
  transform: translate(4px, -50%);
  padding: 0.3rem 0.6rem;
  background: var(--ink);
  color: var(--bg);
  font-size: 0.78rem;
  line-height: 1.4;
  white-space: nowrap;
  border-radius: 2px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s var(--ease), transform 0.15s var(--ease);
}
:root[lang="fa"] .connect-tip { font-family: var(--font-fa); }
.connect-link:hover .connect-tip,
.connect-link:focus-visible .connect-tip { opacity: 1; transform: translate(0, -50%); }

/* Mobile floating button + panel */
.connect-fab,
.connect-panel { display: none; }

@media (min-width: 64em) {
  body.has-connect { padding-right: var(--rail); }
  body.has-connect .site-header { margin-right: calc(-1 * var(--rail)); padding-right: var(--rail); }
}

@media (max-width: 63.99em) {
  .connect-rail { display: none; }
  .connect-fab {
    position: fixed;
    right: max(1rem, env(safe-area-inset-right));
    bottom: max(1rem, env(safe-area-inset-bottom));
    z-index: 46;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 3rem;
    min-width: 3rem;
    padding: 0 1.1rem 0 0.95rem;
    border-radius: 999px;
    background: var(--ink);
    color: var(--bg);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 500;
    box-shadow: 0 10px 28px -10px rgba(0, 0, 0, 0.45);
    transition: background-color 0.2s var(--ease);
  }
  .connect-fab:hover { background: var(--accent); color: var(--on-ink); }
  .connect.is-open .connect-fab { background: var(--accent); color: var(--on-ink); }
  .connect-panel:not([hidden]) {
    position: fixed;
    right: max(1rem, env(safe-area-inset-right));
    bottom: calc(max(1rem, env(safe-area-inset-bottom)) + 3.75rem);
    z-index: 47;
    display: block;
    width: min(21rem, calc(100vw - 2rem));
    max-height: min(70vh, 34rem);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 0.75rem;
    background: var(--surface);
    border: 1px solid var(--rule-strong);
    border-radius: var(--radius);
    box-shadow: 0 24px 50px -20px rgba(0, 0, 0, 0.5);
  }
  @media (prefers-reduced-motion: no-preference) {
    .connect-panel:not([hidden]) { animation: rise 0.22s var(--ease) both; }
  }
  /* keep the floating button clear of the footer's last line */
  body.has-connect .site-footer { padding-bottom: 4.5rem; }
}
.connect-panel-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.25rem 0.25rem 0.6rem; border-bottom: 1px solid var(--rule); margin-bottom: 0.4rem; }
.connect-panel-title { font-weight: 600; }
.panel-list { list-style: none; display: grid; gap: 0.15rem; }
.panel-link {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  align-items: center;
  gap: 0.6rem;
  min-height: 3rem;
  padding: 0.35rem 0.5rem;
  border-radius: 2px;
  text-decoration: none;
}
.panel-link:hover, .panel-link:focus-visible { background: var(--accent-soft); }
.panel-link .icon { color: var(--accent); justify-self: center; }
.panel-text { display: grid; line-height: 1.3; min-width: 0; }
.panel-label { font-size: 0.92rem; font-weight: 500; }
.panel-value { font-size: 0.78rem; color: var(--ink-2); overflow-wrap: anywhere; unicode-bidi: isolate; }
[dir="rtl"] .panel-value { text-align: end; }

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

/* ---------- Print ---------- */
@media print {
  @page { size: A4; margin: 14mm 14mm 16mm; }
  :root, :root[data-theme="dark"] {
    --bg: #fff; --surface: #fff; --surface-2: #fff; --ink: #111; --ink-2: #444; --ink-3: #777;
    --rule: #ccc; --rule-strong: #999; --accent: #7a3c22; --accent-soft: transparent; color-scheme: light;
  }
  html, body { background: #fff !important; color: #111; font-size: 10.5pt; }
  body.has-connect { padding-right: 0; }
  .site-header, .site-footer, .connect, .skip-link, .cv-toolbar, .theme-toggle, .pager { display: none !important; }
  .hero::before, .page-hero::before, .section-adicon::before { display: none; }
  .cv-wrap { width: 100%; padding: 0; }
  .cv-sheet { border: 0; box-shadow: none; padding: 0; }
  .cv-body { grid-template-columns: minmax(0, 1fr) 15rem; gap: 2rem; }
  .cv-role, .cv-skill, .cv-projects li, .timeline-item, .project-card { break-inside: avoid; }
  .cv-section h2 { break-after: avoid; }
  a { text-decoration: none; color: inherit; }
  .project-card { box-shadow: none; transform: none; }
}