/* =====================================================================
   drmkiani.ir : design system
   Concept: "From lattice to mind" – a rigid computational lattice that
   relaxes into an organic form as you scroll; warm amber appears only
   where mind enters.
   Font: Vazirmatn (variable) – place the file at assets/fonts/Vazirmatn-Variable.woff2
   ===================================================================== */

@font-face {
  font-family: "Vazirmatn";
  src: url("../assets/fonts/Vazirmatn-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #060a14;
  --bg-2: #0a1122;
  --ink: #eef1fa;
  --ink-2: #a7b2cf;
  --ink-3: #6c7898;
  --line: rgba(170, 190, 240, .14);
  --glass: rgba(255, 255, 255, .04);
  --glass-2: rgba(255, 255, 255, .07);
  --blue: #6f9bff;
  --accent: #ffb454;
  --accent-2: #ff8a5c;
  --glow: rgba(111, 155, 255, .18);

  --font: "Vazirmatn", "Vazir", "Estedad", "Segoe UI", Tahoma, system-ui, sans-serif;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --ease-io: cubic-bezier(.77, 0, .18, 1);

  --fs-display: clamp(2.7rem, 9vw, 7.2rem);
  --fs-h2: clamp(2rem, 5vw, 3.8rem);
  --gutter: clamp(1.25rem, 5vw, 4.5rem);
  --maxw: 1240px;
  --radius: 22px;
}

body.in-mind { --glow: rgba(255, 180, 84, .16); }

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-block-start: 5.5rem; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font); font-size: 1.05rem; line-height: 1.95;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, p, figure { margin: 0; }
::selection { background: var(--accent); color: #140c00; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: fixed; inset-block-start: -5rem; inset-inline-start: 1rem; z-index: 400; background: var(--accent); color: #140c00; padding: .6rem 1.1rem; border-radius: 10px; font-weight: 700; }
.skip:focus { inset-block-start: 1rem; }

/* ---------- Fixed layers ---------- */
#scene { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.vignette {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(1200px 700px at 78% 12%, var(--glow), transparent 60%),
    radial-gradient(900px 600px at 10% 90%, rgba(60, 90, 200, .10), transparent 60%),
    linear-gradient(to bottom, transparent 55%, rgba(6, 10, 20, .75));
  transition: background 1.2s var(--ease);
}
.grain {
  position: fixed; inset: -50%; z-index: 2; pointer-events: none; opacity: .05; mix-blend-mode: overlay;
  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='.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
main, .site-footer { position: relative; z-index: 3; }
.no-gl #scene { display: none; }
.no-gl body {
  background:
    radial-gradient(900px 600px at 25% 30%, rgba(111, 155, 255, .22), transparent 60%),
    radial-gradient(700px 500px at 80% 70%, rgba(255, 180, 84, .10), transparent 60%),
    var(--bg);
}

.progress { position: fixed; inset-block-start: 0; inset-inline: 0; height: 2px; z-index: 300; background: transparent; }
.progress i { display: block; height: 100%; background: linear-gradient(90deg, var(--blue), var(--accent)); transform: scaleX(0); transform-origin: right; }

.cursor { position: fixed; inset: 0 auto auto 0; z-index: 350; pointer-events: none; display: none; }
.cursor i {
  display: block; width: 34px; height: 34px; margin: -17px 0 0 -17px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .55); transition: transform .35s var(--ease), background .35s, border-color .35s;
  mix-blend-mode: difference;
}
.cursor.hover i { transform: scale(1.9); background: rgba(255, 255, 255, .14); border-color: transparent; }
@media (hover: hover) and (pointer: fine) { .has-cursor .cursor { display: block; } }

/* ---------- Loader ---------- */
.loader {
  position: fixed; inset: 0; z-index: 500; background: var(--bg); display: grid; place-items: center;
  clip-path: inset(0 0 0 0); transition: clip-path 1.1s var(--ease-io) .25s;
}
.loader-inner { display: grid; gap: 1.2rem; justify-items: center; }
.loader-name { font-size: clamp(1.6rem, 5vw, 2.8rem); font-weight: 800; letter-spacing: 0; opacity: 0; animation: fadeUp .9s var(--ease) .1s forwards; }
.loader-line { width: min(260px, 60vw); height: 2px; background: var(--line); overflow: hidden; border-radius: 2px; }
.loader-line i { display: block; height: 100%; background: linear-gradient(90deg, var(--blue), var(--accent)); transform: scaleX(0); transform-origin: right; animation: fill 1.6s var(--ease-io) .2s forwards; }
.ready .loader { clip-path: inset(0 0 100% 0); pointer-events: none; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes fill { to { transform: scaleX(1); } }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset-block-start: 0; inset-inline: 0; z-index: 200;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem;
  padding: .9rem var(--gutter);
  transition: transform .6s var(--ease), background .4s;
}
.site-header.hide { transform: translateY(-110%); }
.brand { display: inline-flex; align-items: center; gap: .7rem; justify-self: start; font-weight: 800; }
.brand-mark {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; font-size: .78rem; font-weight: 800;
  background: linear-gradient(145deg, rgba(111, 155, 255, .35), rgba(255, 180, 84, .25)); border: 1px solid var(--line);
  font-family: "Vazirmatn", system-ui, sans-serif; letter-spacing: .02em;
}
.brand-name { font-size: 1.05rem; }

nav#nav {
  display: flex; gap: .25rem; padding: .35rem; border-radius: 999px;
  background: rgba(10, 17, 34, .55); border: 1px solid var(--line);
  backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%);
}
nav#nav a {
  position: relative; padding: .3rem 1rem; border-radius: 999px; font-size: .88rem; color: var(--ink-2);
  transition: color .3s, background .4s var(--ease);
}
nav#nav a:hover { color: var(--ink); background: var(--glass-2); }
nav#nav a.active { color: #140c00; background: var(--accent); font-weight: 700; }

.header-end { justify-self: end; display: flex; align-items: center; gap: .6rem; }
.lang {
  font-size: .8rem; font-weight: 700; letter-spacing: .08em; padding: .35rem .85rem; border-radius: 999px;
  border: 1px solid var(--line); color: var(--ink-2); transition: all .3s;
  backdrop-filter: blur(10px);
}
.lang:hover { color: var(--ink); border-color: var(--ink-3); }
.menu-btn { display: none; position: relative; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%; background: rgba(10, 17, 34, .6); cursor: pointer; backdrop-filter: blur(10px); }
.menu-btn i { position: absolute; inset-inline: 13px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .45s var(--ease); }
.menu-btn i:nth-of-type(1) { inset-block-start: 18px; }
.menu-btn i:nth-of-type(2) { inset-block-start: 25px; }
.menu-btn[aria-expanded="true"] i:nth-of-type(1) { transform: translateY(3.5px) rotate(45deg); }
.menu-btn[aria-expanded="true"] i:nth-of-type(2) { transform: translateY(-3.5px) rotate(-45deg); }

/* ---------- Layout ---------- */
.wrap { width: min(var(--maxw), 100% - 2 * var(--gutter)); margin-inline: auto; }
.section { position: relative; padding-block: clamp(5.5rem, 13vw, 10rem); overflow: clip; }
.section::before {
  content: attr(data-num); position: absolute; inset-block-start: clamp(1rem, 4vw, 3rem); inset-inline-end: var(--gutter);
  font-size: clamp(7rem, 22vw, 18rem); font-weight: 900; line-height: 1; color: transparent;
  -webkit-text-stroke: 1px rgba(170, 190, 240, .06); pointer-events: none; user-select: none; z-index: -1;
}
.grid-2 { display: grid; grid-template-columns: 1fr 1.3fr; gap: clamp(2rem, 7vw, 7rem); align-items: start; }
.eyebrow { display: inline-flex; align-items: center; gap: .7rem; color: var(--accent); font-size: .88rem; font-weight: 600; margin-block-end: 1.1rem; }
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 14px var(--accent); }
h1, h2, h3 { letter-spacing: 0; }
.display { font-size: var(--fs-display); line-height: 1.18; font-weight: 800; }
h2 { font-size: var(--fs-h2); line-height: 1.38; font-weight: 800; max-width: 18ch; }
h3 { font-size: 1.2rem; font-weight: 700; line-height: 1.6; }
.prose { color: var(--ink-2); max-width: 62ch; }
.prose p + p { margin-block-start: 1.2rem; }
.sub { color: var(--ink-2); max-width: 62ch; margin-block: 1.4rem 3rem; }
.note { margin-block-start: 3.5rem; color: var(--ink-3); font-size: .92rem; padding-inline-start: 1rem; border-inline-start: 2px solid var(--accent); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh; display: flex; flex-direction: column; justify-content: center;
  width: min(var(--maxw), 100% - 2 * var(--gutter)); margin-inline: auto; padding-block: 7.5rem 5rem;
}
.hero-copy { max-width: 680px; }
.hero .display { margin-block-end: 1.6rem; }
.lede { color: var(--ink-2); font-size: clamp(1.08rem, 2.2vw, 1.45rem); line-height: 2; max-width: 40ch; }
.chips { display: flex; flex-wrap: wrap; gap: .55rem; margin-block: 1.8rem 2.2rem; }
.chips li {
  padding: .2rem 1.05rem; border-radius: 999px; font-size: .88rem; color: var(--ink-2);
  border: 1px solid var(--line); background: var(--glass); backdrop-filter: blur(8px);
}
.hero-links { display: flex; flex-wrap: wrap; gap: .8rem; }
.hero-foot { position: absolute; inset-inline: 0; inset-block-end: 2rem; display: flex; align-items: center; justify-content: space-between; color: var(--ink-3); font-size: .82rem; }
.scroll-cue { position: relative; width: 26px; height: 44px; border: 1px solid var(--line); border-radius: 14px; }
.scroll-cue span { position: absolute; inset-inline-start: 50%; inset-block-start: 9px; width: 3px; height: 9px; margin-inline-start: -1.5px; border-radius: 2px; background: var(--accent); animation: cue 2.1s var(--ease) infinite; }
@keyframes cue { 0% { transform: translateY(0); opacity: 1; } 75%, 100% { transform: translateY(15px); opacity: 0; } }

/* ---------- Buttons ---------- */
.btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center; padding: .75rem 1.7rem; border-radius: 999px;
  font-weight: 700; font-size: .95rem; color: #140c00; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 12px 34px -14px var(--accent); will-change: transform;
  transition: box-shadow .4s var(--ease), background .4s, color .3s, border-color .3s;
}
.btn span { position: relative; display: block; pointer-events: none; }
.btn:hover { box-shadow: 0 18px 44px -12px var(--accent); }
.btn.ghost { color: var(--ink); background: var(--glass); border: 1px solid var(--line); box-shadow: none; backdrop-filter: blur(10px); }
.btn.ghost:hover { border-color: var(--ink-3); background: var(--glass-2); }

/* ---------- Marquee ---------- */
.marquee {
  position: relative; z-index: 3; overflow: hidden; border-block: 1px solid var(--line);
  background: rgba(6, 10, 20, .55); backdrop-filter: blur(10px); padding-block: 1.1rem;
}
.marquee-track { display: flex; gap: 1.2rem; width: max-content; animation: marquee 38s linear infinite; font-size: clamp(1.3rem, 3vw, 1.2rem); font-weight: 800; -webkit-text-stroke: 1px rgba(200, 215, 255, .5); white-space: nowrap; }
.marquee-track b { color: var(--accent); -webkit-text-stroke: 0; font-size: .8em; align-self: center; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: minmax(260px, .8fr) 1.4fr; gap: clamp(2rem, 7vw, 7rem); align-items: center; }
.portrait {
  position: relative; aspect-ratio: 4 / 5; border-radius: 28px; overflow: hidden; border: 1px solid var(--line);
  background: linear-gradient(160deg, #101a36, #0a1020); box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .7), 0 0 0 1px rgba(255, 255, 255, .03) inset;
}
.portrait img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.portrait-fallback {
  position: absolute; inset: 0; display: none; place-items: center; font-size: clamp(4rem, 12vw, 8rem); font-weight: 900;
  color: transparent; -webkit-text-stroke: 1px rgba(170, 190, 240, .35);
  background: radial-gradient(circle at 30% 20%, rgba(111, 155, 255, .25), transparent 55%), radial-gradient(circle at 80% 90%, rgba(255, 180, 84, .18), transparent 55%);
}
.portrait.missing img { display: none; }
.portrait.missing .portrait-fallback { display: grid; }

.pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.1rem; margin-block-start: clamp(4rem, 8vw, 6rem); }

/* ---------- Tilt cards ---------- */
.tilt { transform-style: preserve-3d; transform: perspective(1000px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); transition: transform .6s var(--ease), border-color .4s, opacity .9s var(--ease); will-change: transform; }
.tilt.tilting { transition: transform .12s linear, border-color .4s, opacity .9s var(--ease); }
.glare { position: absolute; inset: 0; pointer-events: none; border-radius: inherit; opacity: 0; transition: opacity .4s; background: radial-gradient(420px circle at var(--gx, 50%) var(--gy, 0%), rgba(255, 255, 255, .13), transparent 45%); }
.tilt:hover .glare { opacity: 1; }
.card, .tcard {
  position: relative; padding: 1.8rem 1.6rem 1.7rem; border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(160deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02));
  border: 1px solid var(--line); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.card:hover, .tcard:hover { border-color: rgba(111, 155, 255, .5); }
.card-idx { display: block; font-size: .82rem; font-weight: 700; color: var(--accent); margin-block-end: 2.2rem; letter-spacing: .1em; font-family: "Vazirmatn", system-ui, sans-serif; }
.card p { color: var(--ink-3); font-size: .85rem; margin-block-start: .6rem; line-height: 1.7; }
.tcard-tag { display: inline-block; font-size: .78rem; font-weight: 700; color: var(--accent); padding: .1rem .8rem; border: 1px solid rgba(255, 180, 84, .35); border-radius: 999px; margin-block-end: 1.3rem; }
.tcard p { color: var(--ink-2); margin-block-start: .7rem; font-size: .96rem; }

/* ---------- Teaching rows ---------- */
.rows { border-block-start: 1px solid var(--line); }
.rows li {
  position: relative; display: grid; grid-template-columns: 3.2rem 1fr 1.5fr 2rem; gap: 1.5rem; align-items: center;
  padding: 1.5rem .5rem; border-block-end: 1px solid var(--line); isolation: isolate;
  transition: padding .6s var(--ease), opacity .9s var(--ease), transform .9s var(--ease);
}
.rows li::before {
  content: ""; position: absolute; inset: 0; z-index: -1; transform: scaleX(0); transform-origin: right;
  background: linear-gradient(270deg, rgba(111, 155, 255, .13), transparent); transition: transform .7s var(--ease);
}
.rows li:hover { padding-inline: 1.4rem; }
.rows li:hover::before { transform: scaleX(1); }
.row-n { font-style: normal; color: var(--ink-3); font-size: .85rem; font-weight: 600; }
.rows span { font-weight: 800; font-size: 1.15rem; }
.rows em { font-style: normal; color: var(--ink-2); font-size: .96rem; }
.row-arrow { color: var(--accent); opacity: 0; transform: translateX(10px); transition: all .5s var(--ease); font-weight: 400; }
.rows li:hover .row-arrow { opacity: 1; transform: none; }

/* ---------- Industry ---------- */
.timeline { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; margin-block-start: 3.5rem; }

/* ---------- 3D gallery ring ---------- */
.gallery { position: relative; z-index: 3; height: 320vh; }
.gallery .stage { position: sticky; inset-block-start: 0; height: 100vh; height: 100svh; overflow: hidden; display: grid; grid-template-rows: auto 1fr; padding-block-start: 6rem; }
.gallery-head { width: min(var(--maxw), 100% - 2 * var(--gutter)); margin-inline: auto; }
.gallery-head h2 { font-size: clamp(1.8rem, 4vw, 3rem); }
.gallery-head .sub { margin-block: .6rem 0; font-size: .9rem; color: var(--ink-3); }
.ring { position: relative; perspective: 1700px; perspective-origin: 50% 40%; display: grid; place-items: center; }
.ring-inner { position: relative; width: clamp(180px, 22vw, 300px); aspect-ratio: 4 / 5.2; transform-style: preserve-3d; transform: translateZ(calc(var(--r) * -1)) rotateX(-6deg) rotateY(var(--rot, 0deg)); will-change: transform; --r: clamp(250px, 31vw, 470px); }
.frame {
  position: absolute; inset: 0; border-radius: 18px; overflow: hidden; border: 1px solid var(--line);
  background: linear-gradient(160deg, #111c3a, #0a1022); backface-visibility: hidden; -webkit-backface-visibility: hidden;
  transform: rotateY(calc(var(--i) * 45deg)) translateZ(var(--r));
  box-shadow: 0 30px 60px -25px rgba(0, 0, 0, .8);
}
.frame::before { content: ""; position: absolute; inset: 0; z-index: 1; background: radial-gradient(circle at 25% 15%, rgba(111, 155, 255, .28), transparent 55%), radial-gradient(circle at 80% 95%, rgba(255, 180, 84, .16), transparent 55%); }
.frame img { position: absolute; inset: 0; z-index: 2; width: 100%; height: 100%; object-fit: cover; }
.frame.missing img { display: none; }
.frame-n { position: absolute; z-index: 3; inset-block-start: 1rem; inset-inline-start: 1.1rem; font-size: 2.4rem; font-weight: 900; color: transparent; -webkit-text-stroke: 1px rgba(220, 230, 255, .55); line-height: 1; }
.frame figcaption {
  position: absolute; z-index: 4; inset-inline: 0; inset-block-end: 0; padding: 2.4rem 1.1rem 1rem; font-size: .85rem; line-height: 1.7; font-weight: 600;
  background: linear-gradient(to top, rgba(6, 10, 20, .92), transparent);
}

/* ---------- Lists ---------- */
.list li { position: relative; padding: 1.05rem 2rem 1.05rem 0; border-block-end: 1px solid var(--line); color: var(--ink-2); transition: color .3s, opacity .9s var(--ease), transform .9s var(--ease); }
.list li::before { content: ""; position: absolute; inset-inline-start: 0; inset-block-start: 1.65rem; width: 8px; height: 8px; transform: rotate(45deg); border: 1px solid var(--accent); transition: background .3s; }
.list li:hover { color: var(--ink); }
.list li:hover::before { background: var(--accent); }
.list li { padding-inline: 1.8rem 0; }

/* ---------- Mind ---------- */
.mind { padding-block: clamp(8rem, 20vw, 15rem); }
.mind-wrap { text-align: center; display: flex; flex-direction: column; align-items: center; }
.mind-title { font-size: clamp(2.4rem, 8vw, 6rem); max-width: none; line-height: 1.3; background: linear-gradient(120deg, #fff 20%, var(--accent) 80%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.mind-prose { margin-block-start: 2.6rem; text-align: center; max-width: 56ch; font-size: 1.15rem; }
.mind::before { display: none; }

/* ---------- Contact ---------- */
.contact .display { max-width: 14ch; margin-block-end: 2.5rem; }
.mail-big {
  position: relative; display: inline-block; font-size: clamp(1.4rem, 4.4vw, 3.2rem); font-weight: 800; padding-block: .3rem; margin-block-end: 4rem;
  font-family: "Vazirmatn", system-ui, sans-serif; will-change: transform;
}
.mail-big span { position: relative; display: block; pointer-events: none; }
.mail-big::after { content: ""; position: absolute; inset-inline: 0; inset-block-end: 0; height: 2px; background: linear-gradient(90deg, var(--blue), var(--accent)); transform: scaleX(.25); transform-origin: left; transition: transform .7s var(--ease); }
.mail-big:hover::after { transform: scaleX(1); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem clamp(2rem, 7vw, 6rem); }
.contact-list li { display: flex; justify-content: space-between; gap: 1rem; padding: 1.1rem 0; border-block-end: 1px solid var(--line); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.contact-list span { color: var(--ink-3); }
.contact-list a:hover { color: var(--accent); }
.social { display: flex; flex-wrap: wrap; gap: .7rem; align-content: flex-start; }
.social a {
  display: inline-flex; align-items: center; gap: .7rem; padding: .7rem 1.3rem; border-radius: 999px; border: 1px solid var(--line); background: var(--glass);
  backdrop-filter: blur(10px); font-weight: 600; transition: border-color .3s, background .3s, color .3s; will-change: transform;
}
.social a span, .social a i { pointer-events: none; }
.social a i { font-style: normal; color: var(--accent); transition: transform .4s var(--ease); }
.social a:hover { border-color: var(--accent); background: rgba(255, 180, 84, .08); }
.social a:hover i { transform: translate(-3px, -3px); }

.site-footer { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 2.4rem var(--gutter); border-block-start: 1px solid var(--line); color: var(--ink-3); font-size: .86rem; background: rgba(6, 10, 20, .7); }
.to-top:hover { color: var(--accent); }

/* ---------- Motion primitives ---------- */
.js .reveal { opacity: 0; transform: translateY(32px); transition: opacity 1s var(--ease), transform 1s var(--ease); transition-delay: calc(var(--d, 0) * 85ms); }
.js .reveal.in { opacity: 1; transform: none; }
.js .tilt.reveal { transform: perspective(1000px) translateY(32px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); }
.js .tilt.reveal.in { transform: perspective(1000px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); }
.js .rows li.reveal, .js .list li.reveal, .js .contact-list li.reveal { transform: translateY(24px); }
.js .rows li.reveal.in, .js .list li.reveal.in, .js .contact-list li.reveal.in { transform: none; }

/* word reveal: Persian-safe (never split per letter, it breaks joining) */
[data-split] { perspective: 900px; }
.js [data-split] .w { display: inline-block; overflow: hidden; vertical-align: top; padding-block: .14em .1em; margin-block: -.14em -.1em; }
.js [data-split] .w > span { display: inline-block; transform-origin: 50% 100%; transform: translateY(112%) rotateX(-70deg); opacity: 0; transition: transform 1.2s var(--ease), opacity .8s var(--ease); transition-delay: calc(var(--i) * 90ms + var(--base, 0ms)); }
.js [data-split].in .w > span { transform: none; opacity: 1; }
.js .hero [data-split] { --base: 700ms; }
[data-split] .w-space { display: inline-block; width: .28em; }

[data-parallax] { will-change: transform; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  nav#nav a { padding-inline: .7rem; font-size: .82rem; }
}
@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; }
  .menu-btn { display: block; position: relative; z-index: 260; }
  nav#nav {
    position: fixed; inset: 0; z-index: 250; flex-direction: column; justify-content: center; align-items: stretch; gap: .2rem; padding: 6rem var(--gutter) 3rem;
    border-radius: 0; border: 0; background: rgba(6, 10, 20, .96); backdrop-filter: blur(24px);
    clip-path: circle(0% at calc(100% - 3rem) 2.4rem); transition: clip-path .9s var(--ease-io); visibility: hidden;
  }
  nav#nav.open { clip-path: circle(150% at calc(100% - 3rem) 2.4rem); visibility: visible; }
  nav#nav a { font-size: clamp(1.7rem, 7vw, 2.4rem); font-weight: 800; padding: .35rem 0; border-radius: 0; background: none; color: var(--ink); display: flex; gap: 1rem; align-items: baseline; opacity: 0; transform: translateY(24px); transition: opacity .6s var(--ease), transform .6s var(--ease), color .3s; }
  nav#nav a::before { content: attr(data-n); font-size: .8rem; color: var(--accent); font-weight: 600; }
  nav#nav.open a { opacity: 1; transform: none; transition-delay: calc(var(--k) * 60ms + 250ms); }
  nav#nav a.active { background: none; color: var(--accent); }
  .header-end { z-index: 260; }
  .grid-2, .about-grid, .contact-grid, .timeline { grid-template-columns: 1fr; }
  .portrait { max-width: 360px; margin-inline: auto; }
  .rows li { grid-template-columns: 2.4rem 1fr; gap: .2rem 1rem; }
  .rows li em { grid-column: 2; }
  .row-arrow { display: none; }
  h2 { max-width: none; }
  .hero-foot { display: none; }
  .hero { padding-block-end: 3rem; }
  .gallery { height: 280vh; }
}
@media (max-width: 560px) {
  .section::before { font-size: 8rem; }
  .brand-name { display: none; }
}

/* ---------- Reduced motion & no-JS fallbacks ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal, .js [data-split] .w > span { opacity: 1 !important; transform: none !important; }
  .loader { display: none; }
  .marquee-track { width: auto; flex-wrap: wrap; justify-content: center; }
  /* gallery: flat grid instead of the pinned 3D ring */
  .gallery { height: auto; padding-block: 5rem; }
  .gallery-head .sub { display: none; }
  .gallery .stage { position: static; height: auto; overflow: visible; padding-block-start: 0; }
  .ring { perspective: none; display: block; margin-block-start: 2.5rem; }
  .ring-inner { width: auto; aspect-ratio: auto; transform: none !important; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; width: min(var(--maxw), 100% - 2 * var(--gutter)); margin-inline: auto; }
  .frame { position: relative; transform: none; aspect-ratio: 4 / 5; }
}