:root {
  --bg: #0b0d0f;
  --surface: #111418;
  --text: #e7e9e4;
  --muted: #8b928c;
  --faint: #7a827c;
  --hairline: #1e2328;
  --hairline-strong: #2a3138;
  --accent: #7fa98c;

  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-fa: "Vazirmatn", system-ui, -apple-system, "Segoe UI", Tahoma, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  
  overflow-x: hidden;
  overflow-x: clip;
}

h1,
h2,
h3 {
  text-wrap: balance;
}


html[dir="rtl"] body {
  font-family: var(--font-fa);
  line-height: 1.8;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-bottom-color 160ms ease;
}

a:hover {
  color: var(--text);
  border-bottom-color: var(--hairline-strong);
}

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

.mono {
  font-family: var(--font-mono);
  font-size: 0.85em;
}



.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 13, 15, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--hairline);
}

.nav {
  max-width: 760px;
  margin: 0 auto;
  padding: 16px clamp(16px, 4.5vw, 24px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand:hover {
  border-bottom-color: transparent;
}

.brand-icon {
  width: 22px;
  height: 22px;
  display: block;
  border-radius: 50%;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-links {
  display: flex;
  gap: 22px;
  font-size: 0.9rem;
  color: var(--muted);
}

.nav-links a {
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--text);
  border-bottom-color: var(--hairline-strong);
}



.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  padding: 2px;
  gap: 2px;
}

.lang-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 4px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease;
}

html[dir="rtl"] .lang-btn {
  font-family: var(--font-fa);
  font-size: 0.85rem;
}

.lang-btn:hover {
  color: var(--text);
}

.lang-btn.is-active {
  background: var(--accent);
  color: #0b0d0f;
}

.lang-btn:focus-visible {
  outline-offset: 2px;
}



.hero {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(72px, 13vw, 120px) clamp(20px, 4.5vw, 24px) clamp(48px, 9vw, 80px);
}

.hero-avatar {
  display: block;
  width: 88px;
  height: 88px;
  border-radius: 20px;
  border: 1px solid var(--hairline-strong);
  margin-bottom: 28px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 28px;
}

html[dir="rtl"] .eyebrow {
  font-family: var(--font-fa);
  letter-spacing: 0;
  text-transform: none;
  font-size: 0.85rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin-bottom: 24px;
}

html[dir="rtl"] .hero h1 {
  letter-spacing: 0;
}

.hero-sub {
  max-width: 36em;
  color: var(--muted);
  font-size: 1.06rem;
  margin-bottom: 40px;
}

.cta {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  padding-bottom: 4px;
}

html[dir="rtl"] .cta {
  font-family: var(--font-fa);
  font-size: 0.95rem;
}



.section {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(40px, 8vw, 64px) clamp(20px, 4.5vw, 24px);
}

.section-head {
  margin-bottom: 32px;
}

.section-head h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

html[dir="rtl"] .section-head h2 {
  letter-spacing: 0;
}

.section-head p {
  color: var(--muted);
  font-size: 0.95rem;
}



.bot-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.bot-card {
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: 22px 24px;
  background: transparent;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.bot-card:hover {
  background: var(--surface);
  border-color: var(--hairline-strong);
  transform: translateY(-2px);
}

.bot-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.bot-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  display: block;
}

.bot-card h3 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.bot-handle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--faint);
  border-bottom: none;
}

.bot-handle:hover {
  color: var(--accent);
  border-bottom: none;
}

.bot-handle::before {
  content: "";
  width: 14px;
  height: 14px;
  background: url("https://img.icons8.com/ios/32/7fa98c/paper-plane.png") center / contain no-repeat;
  opacity: 0.85;
}

.bot-tag {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--faint);
  margin-bottom: 0;
}

html[dir="rtl"] .bot-tag {
  font-family: var(--font-fa);
  font-size: 0.85rem;
}



.project-list {
  list-style: none;
  border-top: 1px solid var(--hairline);
}

.project-row {
  border-bottom: 1px solid var(--hairline);
}

.project-row a {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 24px;
  padding: 22px 8px;
  color: var(--text);
  border-bottom: none;
  transition: background 160ms ease;
}

.project-row a:hover {
  background: var(--surface);
  border-bottom: none;
  color: var(--text);
}

.project-name {
  font-weight: 600;
  letter-spacing: -0.01em;
}

.project-desc {
  color: var(--muted);
  font-size: 0.92rem;
  grid-column: 1 / -1;
}

.project-meta {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--faint);
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-inline-end: 6px;
  vertical-align: 1px;
}



.site-footer {
  border-top: 1px solid var(--hairline);
  max-width: 760px;
  margin: clamp(24px, 5vw, 40px) auto 0;
  padding: clamp(40px, 8vw, 56px) clamp(20px, 4.5vw, 24px) max(48px, env(safe-area-inset-bottom));
}

.footer-meta {
  font-size: 0.9rem;
  color: var(--faint);
}

.footer-meta a {
  color: var(--muted);
}



.sweep {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  visibility: hidden;
  overflow: hidden;
}

.sweep.is-running {
  visibility: visible;
}


.sweep-band {
  position: absolute;
  top: -25vh;
  left: 0;
  height: 150vh;
  width: 130vmax;
  background: var(--surface);
  transform: translateX(-140%) skewX(-8deg);
  will-change: transform;
}


.sweep-band::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  width: 2px;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(127, 169, 140, 0);
}

.sweep-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-fa);
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  opacity: 0;
  white-space: nowrap;
}


.sweep.to-fa .sweep-band {
  animation: sweep-ltr 950ms cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

.sweep.to-fa .sweep-label {
  animation: label-fade 950ms ease forwards;
}


.sweep.to-en .sweep-band {
  animation: sweep-rtl 950ms cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

.sweep.to-en .sweep-label {
  animation: label-fade 950ms ease forwards;
}

@keyframes sweep-ltr {
  0%   { transform: translateX(-140%) skewX(-8deg); }
  45%  { transform: translateX(-15%) skewX(-8deg); }
  55%  { transform: translateX(-15%) skewX(-8deg); }
  100% { transform: translateX(220%) skewX(-8deg); }
}

@keyframes sweep-rtl {
  0%   { transform: translateX(220%) skewX(-8deg); }
  45%  { transform: translateX(-15%) skewX(-8deg); }
  55%  { transform: translateX(-15%) skewX(-8deg); }
  100% { transform: translateX(-140%) skewX(-8deg); }
}

@keyframes label-fade {
  0%   { opacity: 0; }
  45%  { opacity: 0; }
  55%  { opacity: 1; }
  70%  { opacity: 1; }
  100% { opacity: 0; }
}



.js .reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}




@media (max-width: 680px) {
  .bot-grid {
    grid-template-columns: 1fr;
  }

  .nav-right {
    gap: 12px;
  }

  .nav-links {
    gap: 14px;
    font-size: 0.85rem;
  }

  .hero-avatar {
    width: 72px;
    height: 72px;
    border-radius: 18px;
  }

  .hero h1 {
    font-size: clamp(1.7rem, 8.5vw, 2.4rem);
  }

  .hero-sub {
    font-size: 0.98rem;
  }
}


@media (max-width: 400px) {
  .brand-name {
    display: none;
  }

  .nav-links {
    gap: 10px;
    font-size: 0.8rem;
  }

  .lang-btn {
    padding: 4px 9px;
  }

  .nav-right {
    gap: 10px;
  }

  .bot-card {
    padding: 18px;
  }
}


@media (orientation: landscape) and (max-height: 520px) {
  .hero {
    padding-top: clamp(40px, 10vh, 64px);
    padding-bottom: 40px;
  }

  .section {
    padding-top: 32px;
    padding-bottom: 32px;
  }

  .hero-avatar {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    margin-bottom: 20px;
  }

  .hero-sub {
    margin-bottom: 28px;
  }

  .eyebrow {
    margin-bottom: 18px;
  }
}


@media (max-width: 680px) and (orientation: portrait) {
  .site-header {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }

  .section {
    padding-left: max(20px, env(safe-area-inset-left));
    padding-right: max(20px, env(safe-area-inset-right));
  }
}



@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .sweep .sweep-band,
  .sweep .sweep-label {
    animation: none !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}