/* ============================================================
   Reza Pirighadim — personal site
   Editorial · restrained · technical
   ============================================================ */

:root {
  --bg:        oklch(0.155 0.008 70);
  --bg-2:      oklch(0.190 0.010 70);
  --bg-3:      oklch(0.230 0.012 70);
  --fg:        oklch(0.965 0.005 85);
  --fg-2:      oklch(0.82  0.008 85);
  --muted:     oklch(0.60  0.010 70);
  --muted-2:   oklch(0.42  0.010 70);
  --line:      oklch(0.32  0.008 70);
  --line-2:    oklch(0.24  0.008 70);
  --accent:    oklch(0.85 0.04 85);
  --accent-dim: color-mix(in oklch, var(--accent) 28%, transparent);

  --serif: "Instrument Serif", "Times New Roman", Georgia, serif;
  --sans:  "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --maxw: 1180px;
  --gut:  clamp(20px, 4vw, 56px);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 15px;
  line-height: 1.6;
  letter-spacing: 0.003em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
::selection { background: var(--accent); color: var(--bg); }

/* Texture + vignette */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none;
  opacity: 0.04; mix-blend-mode: overlay; z-index: 1;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
body::after {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background: radial-gradient(120% 80% at 50% 0%, transparent 40%, color-mix(in oklch, var(--bg) 90%, black) 100%);
}
main, header, footer, nav { position: relative; z-index: 2; }

a { color: inherit; text-decoration: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gut); }

/* ---------- Mono utility ---------- */
.mono-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.mono-eyebrow .num { color: var(--accent); margin-right: 10px; }
.mono-eyebrow .bar {
  display: inline-block; width: 24px; height: 1px;
  background: var(--accent); vertical-align: middle; margin-right: 12px;
}

.serif-h {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.012em;
  line-height: 1.08;
  color: var(--fg);
}
.serif-h .it { font-style: italic; color: var(--accent); }

/* ---------- NAV ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: color-mix(in oklch, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--line-2);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 58px;
}
.brand {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-2);
  display: inline-flex; align-items: center; gap: 10px;
}
.brand .nav-avatar {
  width: 24px; height: 24px;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid var(--line);
  display: inline-block;
  flex-shrink: 0;
}
.brand .nav-avatar img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  filter: contrast(1.02) saturate(0.92);
}
.brand .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-dim);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in oklch, var(--accent) 55%, transparent); }
  80%  { box-shadow: 0 0 0 10px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
  transition: color 160ms ease;
}
.nav-links a:hover { color: var(--fg); }
.nav-links a .num { color: var(--accent); margin-right: 6px; }
@media (max-width: 720px) { .nav-links { display: none; } }

/* ---------- HERO ---------- */
.hero {
  padding-top: clamp(56px, 8vw, 100px);
  padding-bottom: clamp(56px, 8vw, 100px);
}
.hero-top {
  display: flex; justify-content: space-between; gap: 24px;
  margin-bottom: clamp(40px, 6vw, 72px);
  flex-wrap: wrap;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: end;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}

h1.hero-name {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(46px, 7.2vw, 88px);
  line-height: 0.96;
  letter-spacing: -0.018em;
  margin: 0 0 18px;
  color: var(--fg);
}
h1.hero-name .it { font-style: italic; color: var(--accent); }
h1.hero-name .char {
  display: inline-block;
  transform: translateY(0.35em);
  opacity: 0;
  animation: rise 800ms cubic-bezier(.2,.7,.2,1) forwards;
}
@keyframes rise { to { transform: translateY(0); opacity: 1; } }

.hero-role {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(20px, 2vw, 26px);
  color: var(--fg-2);
  line-height: 1.2;
  margin-bottom: 28px;
}

.hero-lead {
  max-width: 540px;
  color: var(--fg-2);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.65;
  text-wrap: pretty;
}
.hero-lead strong { color: var(--fg); font-weight: 500; }

.hero-ctas {
  margin-top: 32px;
  display: flex; gap: 12px; flex-wrap: wrap;
}

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg);
  background: transparent;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}
.btn:hover { background: color-mix(in oklch, var(--accent) 14%, transparent); border-color: var(--accent); color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn .arr { font-size: 13px; }
.btn.primary {
  background: var(--accent); color: var(--bg); border-color: var(--accent);
}
.btn.primary:hover {
  background: color-mix(in oklch, var(--accent) 88%, white);
  color: var(--bg);
}

.hero-meta-row {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--line-2);
}
@media (max-width: 720px) { .hero-meta-row { grid-template-columns: 1fr 1fr; } }
.hm { font-family: var(--mono); font-size: 11.5px; color: var(--fg-2); }
.hm .k {
  display: block;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted-2); margin-bottom: 6px;
}
.hm .v .accent { color: var(--accent); }

/* ---------- TERMINAL ---------- */
.terminal {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--fg-2);
  overflow: hidden;
  box-shadow: 0 30px 80px -40px rgba(0,0,0,0.6);
  width: 100%;
  max-width: 460px;
  margin-left: auto;
}
@media (max-width: 900px) {
  .terminal { margin-left: 0; max-width: 100%; }
}
.terminal-head {
  display: flex; align-items: center; gap: 7px;
  padding: 9px 13px;
  border-bottom: 1px solid var(--line-2);
  background: color-mix(in oklch, var(--bg-2) 80%, black);
}
.tdot { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.tdot.r { background: oklch(0.7 0.13 30); }
.tdot.y { background: oklch(0.78 0.13 80); }
.tdot.g { background: oklch(0.78 0.13 145); }
.ttitle {
  margin-left: 10px;
  color: var(--muted);
  font-size: 10.5px;
  letter-spacing: 0.06em;
}
.terminal-body {
  padding: 16px 18px 20px;
  min-height: 240px;
  white-space: pre-wrap;
  word-break: break-word;
}
.terminal-body .prompt { color: var(--accent); }
.terminal-body .out    { color: var(--fg); }
.terminal-body .dim    { color: var(--muted); }
.terminal-body .ok     { color: var(--accent); }
.terminal-body .key    { color: oklch(0.82 0.10 245); }
.cursor {
  display: inline-block;
  width: 7px; height: 1em;
  background: var(--accent);
  transform: translateY(2px);
  margin-left: 2px;
  animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }