:root {
  --bg: #080b16;
  --bg-2: #0f1730;
  --surface: rgba(16, 22, 42, 0.76);
  --line: rgba(96, 193, 255, 0.45);
  --text: #eef3ff;
  --muted: #abc1e6;
  --neon-blue: #44bfff;
  --neon-pink: #ff4edc;
  --neon-amber: #f7c164;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background: radial-gradient(1400px 900px at 15% -10%, #273d72 0%, transparent 60%), radial-gradient(1200px 800px at 95% 0%, #3c1d6a 0%, transparent 58%), linear-gradient(180deg, var(--bg-2), var(--bg));
  overflow-x: hidden;
}

.bg-grid,
.bg-orb { position: fixed; inset: 0; pointer-events: none; }
.bg-grid {
  background-image: linear-gradient(rgba(74, 114, 194, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(74, 114, 194, 0.08) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at center, black 36%, transparent 85%);
}
.bg-orb { filter: blur(72px); opacity: 0.45; }
.orb-a { background: radial-gradient(circle, rgba(68, 191, 255, 0.6), transparent 66%); transform: translate(-28%, -18%); }
.orb-b { background: radial-gradient(circle, rgba(255, 78, 220, 0.55), transparent 66%); transform: translate(48%, 8%); }

.shell { width: min(1100px, 92vw); margin: 0 auto; }
.site-header { display: flex; justify-content: space-between; align-items: center; padding: 22px 0 14px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: "Space Grotesk", "IBM Plex Sans", sans-serif; font-size: 1.1rem; letter-spacing: 0.02em; }
.brand-logo { width: 30px; height: 30px; }
nav { display: flex; gap: 16px; align-items: center; }
a { color: var(--text); text-decoration: none; }
nav a { color: var(--muted); font-size: 0.95rem; }
nav a:hover { color: var(--neon-blue); }

/* Language switcher */
.lang-switch {
  margin-inline-start: 8px;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--muted);
  transition: color .18s ease, border-color .18s ease;
}
.lang-switch:hover {
  color: var(--neon-blue);
  border-color: var(--neon-blue);
}

.hero { padding: 52px 0 40px; }
.kicker { color: var(--neon-blue); font-size: 0.88rem; letter-spacing: 0.13em; text-transform: uppercase; margin: 0; }
h1, h2, h3 { font-family: "Space Grotesk", "IBM Plex Sans", sans-serif; margin: 0; }
h1 { margin-top: 10px; max-width: 780px; font-size: clamp(2rem, 5.5vw, 4rem); line-height: 1.05; }
.hero-copy { margin: 16px 0 0; max-width: 720px; color: var(--muted); font-size: 1.05rem; line-height: 1.7; }

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
.btn { border-radius: 12px; padding: 11px 16px; font-weight: 600; transition: transform .18s ease, box-shadow .18s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink)); color: #040811; box-shadow: 0 0 24px rgba(68, 191, 255, 0.45); }
.btn-ghost { border: 1px solid var(--line); background: rgba(11, 17, 33, 0.52); }

.card {
  margin-top: 20px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  backdrop-filter: blur(10px);
  box-shadow: 0 0 36px rgba(16, 32, 66, 0.48);
}
.card h2 { font-size: clamp(1.4rem, 3.2vw, 2rem); margin-bottom: 16px; }
.flow-grid, .feature-grid { display: grid; gap: 14px; }
.flow-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.feature-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin-top: 12px; }
.card h3 { color: var(--neon-amber); font-size: 1.08rem; margin-bottom: 8px; }
p { margin: 0; color: var(--muted); line-height: 1.65; }
.compat { margin-top: 14px; color: #d2dcf5; }
.compat a, .about-links a { color: var(--neon-blue); }
.about-links { margin-top: 14px; display: flex; gap: 14px; flex-wrap: wrap; }
.about-links a:hover, .compat a:hover { color: var(--neon-pink); }

/* Installation steps */
.install-steps {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 12px;
}
.install-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.step-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--neon-blue), var(--neon-pink));
  color: #040811;
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1;
}
.step-content h3 {
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 4px;
}
.step-content p {
  font-size: 0.95rem;
}

.site-footer { padding: 30px 0 42px; font-size: 0.9rem; color: #91a9d4; }
.reveal { animation: rise .68s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 720px) {
  .site-header { flex-direction: column; gap: 12px; }
  nav { flex-wrap: wrap; justify-content: center; }
  .hero { padding-top: 34px; }
  .card { padding: 18px; }
}

/* RTL overrides for Persian page */

[dir="rtl"] body {
  font-family: Vazirmatn, "IBM Plex Sans", "Segoe UI", sans-serif;
}

[dir="rtl"] h1,
[dir="rtl"] h2,
[dir="rtl"] h3 {
  font-family: Vazirmatn, "Space Grotesk", "IBM Plex Sans", sans-serif;
}

[dir="rtl"] .brand {
  font-family: Vazirmatn, "Space Grotesk", "IBM Plex Sans", sans-serif;
}

[dir="rtl"] .step-number {
  font-family: Vazirmatn, "Space Grotesk", "IBM Plex Sans", sans-serif;
}

[dir="rtl"] .kicker {
  letter-spacing: 0.04em;
}