/* Mahsa Sabahinia portfolio
   Base: cool paper + ink, Persian blue and turquoise. Each project carries its
   product's real palette; main.js tweens :root to the chapter in view.
   Motif: the eight-point khatam star from Persian tile work. */

@font-face {
  font-family: "Schibsted Grotesk";
  src: url("fonts/schibsted-grotesk.woff2") format("woff2");
  font-weight: 400 900;
  font-display: swap;
}
@font-face {
  font-family: "Vazirmatn";
  src: url("fonts/vazirmatn-arabic.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+0890-0891, U+0898-08E1, U+08E3-08FF, U+200C-200E, U+2010-2011, U+204F, U+2E41, U+FB50-FDFF, U+FE70-FE74, U+FE76-FEFC;
}
@font-face {
  font-family: "Vazirmatn";
  src: url("fonts/vazirmatn-latin.woff2") format("woff2");
  font-weight: 100 900;
  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+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --paper: #eef0f2;
  --ink-base: #17161f;
  --persian: #1c39bb;
  --turquoise: #2a9daf;

  --bg: var(--paper);
  --ink: var(--ink-base);
  --accent: var(--persian);
  --muted: #5b5d6b;
  --line: color-mix(in srgb, var(--ink) 15%, transparent);

  --font: "Schibsted Grotesk", "Vazirmatn", system-ui, sans-serif;
  --gutter: clamp(16px, 4vw, 56px);
  --max: 1320px;
  --ease: cubic-bezier(.2, .7, .1, 1);

  --t-0: .875rem;
  --t-1: 1.0625rem;
  --t-2: 1.375rem;
  --t-3: 1.875rem;
  --t-4: clamp(2rem, 3.6vw, 3rem);
  --t-5: clamp(2.6rem, 6vw, 5.4rem);
  --t-6: clamp(2.2rem, calc((100vw - 2 * var(--gutter)) / 7.9), 12.5rem);
}
html[lang="fa"] { --font: "Vazirmatn", "Schibsted Grotesk", system-ui, sans-serif; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; overflow-x: clip; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--t-1);
  line-height: 1.6;
  background: var(--bg);
  color: var(--ink);
  overflow-x: clip;
}
html[lang="fa"] body { line-height: 1.85; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
  border-radius: 6px;
}
h1, h2, h3 { margin: 0; font-weight: 800; line-height: 1.05; letter-spacing: -.025em; }
html[lang="fa"] :is(h1, h2, h3) { letter-spacing: 0; line-height: 1.35; }
p { margin: 0; }
figure { margin: 0; }
.wrap { width: min(100% - 2 * var(--gutter), var(--max)); margin-inline: auto; }
.skip { position: absolute; inset-inline-start: -999px; top: 8px; }
.skip:focus { inset-inline-start: 8px; background: var(--ink); color: var(--bg); padding: 8px 12px; z-index: 90; }
.ltr { direction: ltr; unicode-bidi: isolate; display: inline-block; }

/* film grain over everything */
body::after {
  content: ""; position: fixed; inset: -50%; z-index: 80; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .55 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: .16; mix-blend-mode: overlay;
  animation: grain 1.2s steps(4) infinite;
}
/* the fixed grain layer is costly to composite on phones */
@media (max-width: 899px), (hover: none) { body::after { display: none; } }
@keyframes grain {
  25% { transform: translate(-3%, 2%); }
  50% { transform: translate(2%, -3%); }
  75% { transform: translate(-1%, -2%); }
}

/* ---------- curtain (only with JS) ---------- */
.curtain { display: none; }
.js .curtain {
  display: grid; place-items: center; position: fixed; inset: 0; z-index: 100;
  background: var(--persian); color: #fff;
}
.curtain svg { width: 84px; height: 84px; }

/* ---------- cursor ---------- */
.cursor { display: none; }
@media (hover: hover) and (pointer: fine) {
  .js .cursor {
    display: grid; place-items: center; position: fixed; top: 0; left: 0; z-index: 95;
    width: 14px; height: 14px; margin: -7px 0 0 -7px; border-radius: 50%;
    background: var(--accent); color: #fff; pointer-events: none;
    font-size: 12px; font-weight: 800; transition: width .3s var(--ease), height .3s var(--ease), margin .3s var(--ease), background-color .3s;
  }
  .cursor span { opacity: 0; transition: opacity .2s; }
  .cursor.view { width: 84px; height: 84px; margin: -42px 0 0 -42px; }
  .cursor.view span { opacity: 1; }
  .cursor.drag { width: 64px; height: 64px; margin: -32px 0 0 -32px; background: var(--ink); color: var(--bg); }
  .cursor.drag span { opacity: 1; }
}

/* ---------- header ---------- */
.top {
  position: fixed; inset: 0 0 auto; z-index: 70;
  mix-blend-mode: difference; color: #fff;
}
.top .wrap { display: flex; align-items: center; gap: 24px; min-height: 72px; }
.brand { font-weight: 800; text-decoration: none; margin-inline-end: auto; display: flex; align-items: center; gap: 10px; }
.brand svg { width: 22px; height: 22px; }
.top nav { display: flex; gap: 24px; }
.top nav a { text-decoration: none; font-size: var(--t-0); font-weight: 600; }
.top nav a:hover { text-decoration: underline; text-underline-offset: 6px; }
.lang { font-size: var(--t-0); text-decoration: none; font-weight: 800; border: 1.5px solid currentColor; border-radius: 99px; padding: 5px 14px; }
@media (max-width: 760px) { .top nav { display: none; } }

/* ---------- khatam star ---------- */
.khatam { fill: none; stroke: currentColor; stroke-width: 1.5; }

/* ---------- hero ---------- */
.hero { position: relative; min-height: 100svh; padding-top: 96px; padding-bottom: 48px; display: grid; align-content: center; overflow: clip; }
.hero-star { position: absolute; width: min(90vw, 980px); aspect-ratio: 1; inset-inline-end: -22vw; top: -12vw; color: var(--accent); opacity: .12; pointer-events: none; }
.hero-star svg { width: 100%; height: 100%; }
.hero-star .khatam { stroke-width: .6; }
.names { display: block; width: 100%; min-width: 0; font-size: var(--t-6); line-height: .9; position: relative; z-index: 2; }
.name { display: block; white-space: nowrap; font-weight: 850; letter-spacing: -.05em; }
.name-en { padding-inline-start: var(--gutter); }
html[lang="fa"] .name-en { direction: ltr; text-align: left; }
.name-en .ch { display: inline-block; }
.name-fa {
  font-family: "Vazirmatn", sans-serif; direction: rtl; text-align: right; font-weight: 900; letter-spacing: 0;
  color: var(--accent); line-height: 1.15; padding-inline: var(--gutter);
}

/* the reel of real screens between the two names */
.reel { direction: ltr; display: block; width: 100%; max-width: 100vw; position: relative; overflow: hidden; margin-block: clamp(10px, 2vh, 22px); height: clamp(140px, 21vh, 240px); }
.reel-track { display: flex; gap: 14px; height: 100%; width: max-content; animation: reel 60s linear infinite; }
html[dir="rtl"] .reel-track { animation-direction: reverse; }
.reel img { height: 100%; width: auto; border-radius: 10px; flex: none; }
.reel:hover .reel-track { animation-play-state: paused; }
@keyframes reel { to { transform: translateX(-50%); } }

.badge {
  position: absolute; z-index: 3; width: clamp(120px, 13vw, 180px); aspect-ratio: 1;
  inset-inline-end: calc(var(--gutter) + 4vw); top: calc(50% - clamp(60px, 6.5vw, 90px));
  display: grid; place-items: center; border-radius: 50%; background: var(--ink); color: var(--bg); text-decoration: none;
}
.badge svg.ring { position: absolute; inset: 0; width: 100%; height: 100%; animation: spin 18s linear infinite; }
.badge svg.ring text { font: 700 10.5px/1 "Schibsted Grotesk", "Vazirmatn", sans-serif; fill: currentColor; letter-spacing: .06em; }
.badge .mid { width: 36%; height: 36%; color: var(--turquoise); }
.badge:hover .mid { transform: rotate(45deg); transition: transform .5s var(--ease); }
@keyframes spin { to { transform: rotate(360deg); } }

.intro { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 28px 56px; margin-top: clamp(24px, 4vh, 44px); align-items: end; position: relative; z-index: 2; }
.lead { font-size: var(--t-2); line-height: 1.45; max-width: 36ch; }
html[lang="fa"] .lead { line-height: 1.75; }
.facts { display: grid; gap: 2px; color: var(--muted); font-size: var(--t-0); justify-self: end; text-align: end; }
.facts strong { color: var(--ink); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 13px 24px; border-radius: 99px;
  font-weight: 700; font-size: var(--t-0); text-decoration: none; border: 1.5px solid var(--ink);
  position: relative; overflow: hidden; isolation: isolate; transition: color .35s var(--ease), border-color .35s;
}
.btn::before { content: ""; position: absolute; inset: 0; z-index: -1; background: var(--accent); transform: translateY(101%); transition: transform .4s var(--ease); border-radius: inherit; }
.btn:hover { color: #fff; border-color: var(--accent); }
.btn:hover::before { transform: none; }
.btn.solid { background: var(--ink); color: var(--bg); }
@media (max-width: 760px) {
  .intro { grid-template-columns: 1fr; }
  .facts { justify-self: start; text-align: start; }
  .hero .badge { display: none; }
}

/* ---------- words band ---------- */
.band { direction: ltr; padding-block: clamp(28px, 6vh, 64px); overflow: hidden; border-block: 1.5px solid var(--line); }
.band-track { display: flex; width: max-content; gap: .5em; font-size: clamp(2.4rem, 7vw, 6.2rem); font-weight: 850; letter-spacing: -.03em; line-height: 1.1; white-space: nowrap; }
html[lang="fa"] .band-track { letter-spacing: 0; }
.band-track span { color: transparent; -webkit-text-stroke: 1.5px var(--ink); }
.band-track span:nth-child(4n + 1) { color: var(--ink); -webkit-text-stroke: 0; }
html[lang="fa"] .band-track span { direction: rtl; }
.band-track i { font-style: normal; color: var(--turquoise); -webkit-text-stroke: 0; }

/* ---------- index of work ---------- */
.index { padding-block: clamp(80px, 14vh, 160px); position: relative; }
.index h2 { font-size: var(--t-0); color: var(--muted); font-weight: 700; letter-spacing: 0; margin-bottom: 18px; }
.index ol { list-style: none; margin: 0; padding: 0; border-top: 1.5px solid var(--line); }
.index li a {
  position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 8px 32px; align-items: center;
  padding: clamp(14px, 2.4vh, 26px) 12px; border-bottom: 1.5px solid var(--line); text-decoration: none; overflow: hidden; isolation: isolate;
}
.index li a::before {
  content: ""; position: absolute; inset: 0; z-index: -1; background: var(--row-bg);
  clip-path: inset(0 100% 0 0); transition: clip-path .55s var(--ease);
}
html[dir="rtl"] .index li a::before { clip-path: inset(0 0 0 100%); }
.index li a:hover::before, .index li a:focus-visible::before { clip-path: inset(0 0 0 0); }
.index li a:hover, .index li a:focus-visible { color: var(--row-ink); }
.index b { font-size: clamp(2rem, 5.4vw, 4.6rem); font-weight: 850; letter-spacing: -.035em; line-height: 1.05; transition: transform .5s var(--ease); }
html[lang="fa"] .index b { letter-spacing: 0; }
.index li a:hover b { transform: translateX(14px); }
html[dir="rtl"] .index li a:hover b { transform: translateX(-14px); }
.index span { font-size: var(--t-0); opacity: .75; }
.index i { width: 16px; height: 16px; border-radius: 50%; background: var(--row-ac); box-shadow: 0 0 0 3px var(--row-bg); }
.peek {
  position: fixed; top: 0; left: 0; z-index: 60; width: 340px; pointer-events: none; border-radius: 12px; overflow: hidden;
  opacity: 0; transform: scale(.85); transition: opacity .3s, transform .4s var(--ease);
  box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .5);
}
.peek.on { opacity: 1; transform: none; }
@media (max-width: 760px) { .index li a { grid-template-columns: minmax(0, 1fr) auto; } .index span { grid-column: 1; } .peek { display: none; } }

/* ---------- chapters ---------- */
html:not(.js) [data-theme], .print [data-theme] {
  --bg: var(--b-bg); --ink: var(--b-ink); --accent: var(--b-ac); --muted: var(--b-mu);
  background: var(--bg); color: var(--ink);
}
.chapter { position: relative; overflow-x: clip; padding-block: clamp(90px, 15vh, 180px) clamp(60px, 10vh, 120px); }
.chapter.sub { padding-top: clamp(40px, 8vh, 90px); }
.ghost {
  font-size: clamp(5rem, 19vw, 19rem); font-weight: 900; letter-spacing: -.05em; line-height: .85; white-space: nowrap;
  color: transparent; -webkit-text-stroke: 1.5px color-mix(in srgb, var(--ink) 35%, transparent);
  margin-bottom: clamp(-60px, -4vw, -20px); pointer-events: none; user-select: none; padding-inline-start: var(--gutter);
}
html[lang="fa"] .ghost { letter-spacing: 0; }
.ch-head { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 28px 72px; align-items: end; position: relative; }
.kicker { font-size: var(--t-0); color: var(--muted); margin-bottom: 14px; display: flex; gap: 10px; align-items: center; font-weight: 600; }
.kicker img { width: 30px; height: 30px; border-radius: 8px; }
.ch-head h2 { font-size: var(--t-5); max-width: 15ch; }
.desc { margin-top: 24px; font-size: var(--t-2); line-height: 1.5; max-width: 40ch; }
html[lang="fa"] .desc { line-height: 1.8; }
.meta { display: grid; grid-template-columns: auto 1fr; gap: 12px 22px; margin: 0; font-size: var(--t-0); padding: 22px 0 4px; border-top: 1.5px solid var(--line); }
.meta dt { color: var(--muted); }
.meta dd { margin: 0; font-weight: 650; }
.meta a { color: var(--accent); font-weight: 750; text-underline-offset: 3px; }
@media (max-width: 900px) { .ch-head { grid-template-columns: 1fr; } }

.did { margin: clamp(56px, 9vh, 110px) 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; padding: 0; list-style: none; }
.did li { position: relative; padding-top: 58px; font-size: var(--t-1); }
.did li::before {
  content: ""; position: absolute; top: 0; inset-inline-start: 0; width: 38px; height: 38px;
  background: var(--accent);
  clip-path: polygon(50% 0, 64% 21%, 85% 15%, 79% 36%, 100% 50%, 79% 64%, 85% 85%, 64% 79%, 50% 100%, 36% 79%, 15% 85%, 21% 64%, 0 50%, 21% 36%, 15% 15%, 36% 21%);
}
@media (max-width: 1000px) { .did { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .did { grid-template-columns: 1fr; } }

.subhead { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 20px 72px; align-items: end; }
.subhead h3 { font-size: var(--t-4); }
.subhead p { max-width: 46ch; }
@media (max-width: 900px) { .subhead { grid-template-columns: 1fr; } }
.note { margin-top: clamp(32px, 6vh, 56px); max-width: 64ch; font-size: var(--t-0); color: var(--muted); }
.scene { margin-top: clamp(56px, 10vh, 120px); position: relative; }
.scene-cap { font-size: var(--t-0); color: var(--muted); margin-top: 16px; max-width: 60ch; }

/* screens: no white chrome, edges melt into the page colour */
.screen { position: relative; border-radius: 14px; overflow: hidden; box-shadow: 0 50px 90px -50px color-mix(in srgb, var(--ink) 55%, transparent); }
.screen img { width: 100%; }
.melt {
  -webkit-mask-image: linear-gradient(to bottom, #000 62%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 62%, transparent 100%);
  box-shadow: none; border-radius: 14px 14px 0 0;
}
.phone { border-radius: clamp(24px, 3vw, 40px); overflow: hidden; box-shadow: 0 40px 80px -40px color-mix(in srgb, var(--ink) 65%, transparent), 0 0 0 1px color-mix(in srgb, var(--ink) 10%, transparent); background: #fff; }
.phone img { width: 100%; aspect-ratio: 390 / 844; object-fit: cover; object-position: top; }
figcaption { font-size: var(--t-0); color: var(--muted); margin-top: 12px; }
[data-zoom] { cursor: zoom-in; }
@media (hover: hover) and (pointer: fine) { .js [data-zoom] { cursor: none; } }

/* fan of phones */
.fan { position: relative; height: clamp(420px, 62vw, 760px); }
.fan figure { position: absolute; left: 50%; top: 4%; width: clamp(150px, 17vw, 250px); margin-left: calc(clamp(150px, 17vw, 250px) / -2); transform-origin: 50% 160%; }
html:not(.js) .fan, .no-motion .fan { height: auto; display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 16px; }
html:not(.js) .fan figure, .no-motion .fan figure { position: static; margin: 0; flex: none; transform: none !important; scroll-snap-align: center; }
@media (max-width: 899px) {
  .fan { height: auto; display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 16px; }
  .fan figure { position: static; margin: 0; flex: none; transform: none !important; scroll-snap-align: center; width: 62vw; max-width: 260px; }
}

/* two-row moving reels */
.reels { direction: ltr; display: grid; gap: 18px; overflow: hidden; padding-block: 8px; mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent); -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent); }
.reels .row { display: flex; gap: 18px; width: max-content; animation: reel 70s linear infinite; }
.reels .row.rev { animation-direction: reverse; }
html[dir="rtl"] .reels .row { animation-direction: reverse; }
html[dir="rtl"] .reels .row.rev { animation-direction: normal; }
.reels:hover .row { animation-play-state: paused; }
html[dir="rtl"] .reels figcaption { direction: rtl; text-align: right; }
.reels.phones figure { width: clamp(150px, 15vw, 210px); flex: none; }
.reels.webs figure { width: clamp(300px, 36vw, 520px); flex: none; }

/* scroll window: the whole page slides inside a frameless view */
.window-scene { display: grid; grid-template-columns: minmax(0, 3.2fr) minmax(0, 1fr); gap: clamp(16px, 3vw, 44px); align-items: center; }
.window {
  position: relative; aspect-ratio: 16 / 10; overflow: hidden; border-radius: 16px;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 7%, #000 88%, transparent 100%);
  mask-image: linear-gradient(to bottom, transparent 0, #000 7%, #000 88%, transparent 100%);
}
.window img { width: 100%; will-change: transform; }
.window-scene .phone.tall { aspect-ratio: 390 / 844; position: relative; }
.window-scene .phone.tall img { aspect-ratio: auto; object-fit: initial; will-change: transform; }
.tag {
  position: absolute; top: 18px; inset-inline-start: 18px; z-index: 2; font-size: 12px; font-weight: 700;
  background: color-mix(in srgb, var(--bg) 80%, transparent); color: var(--ink); padding: 6px 12px; border-radius: 99px; backdrop-filter: blur(8px);
}
html:not(.js) .window, .no-motion .window { overflow-y: auto; }
@media (max-width: 899px) {
  .window-scene { grid-template-columns: 1fr; }
  .window { aspect-ratio: 4 / 5; }
  .window-scene .phone.tall { max-width: 240px; margin-inline: auto; }
  .window-scene > figure:not(.window) { max-width: 240px; margin-inline: auto; }
}

/* compare slider */
.compare { position: relative; direction: ltr; border-radius: 16px; overflow: hidden; user-select: none; touch-action: pan-y; --pos: 50%; box-shadow: 0 50px 90px -50px color-mix(in srgb, var(--ink) 55%, transparent); }
.compare img { width: 100%; pointer-events: none; }
.compare .top-img { position: absolute; inset: 0; clip-path: inset(0 0 0 var(--pos)); }
.compare .top-img img { height: 100%; object-fit: cover; }
.compare .handle {
  position: absolute; top: 0; bottom: 0; left: var(--pos); width: 2px; margin-left: -1px; background: #fff;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .15); pointer-events: none;
}
.compare .knob {
  position: absolute; top: 50%; left: 50%; width: 54px; height: 54px; margin: -27px 0 0 -27px; border-radius: 50%;
  background: #fff; color: #111; display: grid; place-items: center; font-weight: 800; font-size: 15px; box-shadow: 0 10px 30px rgba(0, 0, 0, .3);
}
.compare .lbl { position: absolute; bottom: 16px; z-index: 2; font-size: 12px; font-weight: 800; padding: 6px 12px; border-radius: 99px; background: rgba(255, 255, 255, .9); color: #111; pointer-events: none; }
.compare .lbl.a { left: 16px; }
.compare .lbl.b { right: 16px; }
.compare input[type="range"] { position: absolute; inset: 0; z-index: 3; width: 100%; height: 100%; opacity: 0; cursor: ew-resize; margin: 0; }
.compare:has(input:focus-visible) { outline: 3px solid var(--accent); outline-offset: 4px; }
.compare-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(16px, 3vw, 40px); }
@media (max-width: 899px) { .compare-grid { grid-template-columns: 1fr; } }

/* tilted plane */
.tilt { perspective: 1400px; }
.tilt-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(12px, 2vw, 26px); transform-style: preserve-3d; transform-origin: 50% 0; }
@media (max-width: 700px) { .tilt-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* parallax row of phones: each rises at its own speed */
.parallax { display: grid; grid-template-columns: repeat(var(--n), minmax(0, 1fr)); gap: clamp(12px, 2vw, 28px); align-items: start; max-width: calc(var(--n) * 240px); margin-inline: auto; }
.parallax figure:nth-child(even) { margin-top: clamp(40px, 7vw, 110px); }
.parallax figcaption { text-align: center; }
@media (max-width: 899px) {
  .parallax { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; gap: 14px; padding-bottom: 12px; max-width: none; }
  .parallax figure { flex: 0 0 62vw; max-width: 250px; scroll-snap-align: center; margin-top: 0 !important; }
}
.tilt-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

/* panel stack: a 3D pile that opens into a flat grid as you scroll */
.stack {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(14px, 2vw, 28px);
  max-width: 1080px; margin-inline: auto; position: relative; perspective: 1600px;
}
.stack figure { position: relative; transform-style: preserve-3d; will-change: transform; }
@media (max-width: 700px) { .stack { grid-template-columns: 1fr; } }

.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(16px, 3vw, 40px); align-items: start; }
.pair figure:nth-child(2) { margin-top: clamp(40px, 8vw, 120px); }
@media (max-width: 700px) { .pair { grid-template-columns: 1fr; } .pair figure:nth-child(2) { margin-top: 0; } }

/* ---------- earlier work ---------- */
.earlier { padding-block: clamp(90px, 14vh, 160px); }
.sec-title { font-size: var(--t-5); margin-bottom: clamp(32px, 6vh, 64px); }
.earlier-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.earlier-list article { padding: clamp(24px, 3vw, 40px); border-radius: 22px; background: color-mix(in srgb, var(--ink) 5%, transparent); position: relative; overflow: hidden; }
.earlier-list article svg { position: absolute; inset-inline-end: -40px; top: -40px; width: 170px; height: 170px; color: var(--e-ac); opacity: .45; }
.earlier-list h3 { font-size: var(--t-4); }
.earlier-list .when { color: var(--muted); font-size: var(--t-0); margin: 8px 0 18px; }
.earlier-list ul { margin: 0; padding-inline-start: 1.1em; display: grid; gap: 8px; }
.earlier-list li::marker { color: var(--e-ac); }
@media (max-width: 760px) { .earlier-list { grid-template-columns: 1fr; } }

/* ---------- about ---------- */
.about { padding-block: clamp(90px, 14vh, 160px); }
.about-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.2fr); gap: 48px clamp(40px, 7vw, 110px); align-items: start; }
.portrait { position: relative; max-width: 440px; width: 100%; }
.arch {
  position: relative; aspect-ratio: 4 / 5.4; overflow: hidden;
  clip-path: url(#arch);
  background: linear-gradient(160deg, var(--persian), var(--turquoise));
  color: #fff; display: grid; place-items: center;
}
.arch .mono { position: relative; font-family: "Vazirmatn", sans-serif; font-size: clamp(6rem, 14vw, 11rem); font-weight: 900; line-height: 1; opacity: .92; }
.arch .mono-pattern { position: absolute; inset: -10%; width: 120%; height: 120%; opacity: .2; }
.arch img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.portrait .badge { top: auto; bottom: -20px; inset-inline-end: -24px; }
.about .big { font-size: var(--t-3); line-height: 1.35; font-weight: 650; letter-spacing: -.012em; max-width: 30ch; }
html[lang="fa"] .about .big { line-height: 1.75; letter-spacing: 0; }
.about .body { display: grid; gap: 14px; margin-top: 24px; max-width: 58ch; color: var(--muted); }
.about h3 { font-size: var(--t-1); font-weight: 750; margin: 40px 0 14px; letter-spacing: 0; }
.tags { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { border: 1.5px solid var(--line); border-radius: 99px; padding: 7px 15px; font-size: var(--t-0); font-weight: 650; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 28px; counter-reset: s; }
.steps li { counter-increment: s; border-top: 1.5px solid var(--line); padding-top: 14px; }
.steps li::before { content: counter(s); display: block; font-size: var(--t-3); font-weight: 850; color: var(--accent); line-height: 1; margin-bottom: 8px; }
html[lang="fa"] .steps li::before { content: counter(s, persian); }
.steps b { display: block; }
.steps span { color: var(--muted); font-size: var(--t-0); }
@media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; } .portrait { max-width: 340px; } }
@media (max-width: 500px) { .steps { grid-template-columns: 1fr; } }

/* ---------- timeline ---------- */
.timeline { padding-block: clamp(40px, 8vh, 100px) clamp(90px, 14vh, 160px); }
.tl { list-style: none; padding: 0; margin: 0; position: relative; }
.tl::before { content: ""; position: absolute; top: 0; bottom: 0; inset-inline-start: 7px; width: 2px; background: var(--line); }
.tl-wrap .fill { position: absolute; top: 0; inset-inline-start: 7px; width: 2px; height: 100%; background: var(--accent); transform-origin: top; }
.tl li { display: grid; grid-template-columns: 220px minmax(0, 1fr) minmax(0, 1.3fr); gap: 6px 32px; padding-block: 22px; padding-inline-start: 44px; align-items: baseline; position: relative; }
.tl li::before { content: ""; position: absolute; inset-inline-start: 0; top: 30px; width: 16px; height: 16px; border-radius: 50%; background: var(--bg); border: 3px solid var(--accent); }
.tl time { color: var(--muted); font-size: var(--t-0); font-variant-numeric: tabular-nums; }
.tl b { font-size: var(--t-3); font-weight: 800; line-height: 1.2; letter-spacing: -.015em; }
.tl span { color: var(--muted); }
@media (max-width: 800px) { .tl li { grid-template-columns: 1fr; } }

/* ---------- contact ---------- */
.contact { position: relative; overflow: hidden; padding-block: clamp(100px, 18vh, 200px) clamp(60px, 10vh, 100px); background: var(--persian); color: #fff; }
.contact .big-star { position: absolute; width: min(70vw, 760px); aspect-ratio: 1; inset-inline-end: -12vw; bottom: -20vw; color: #fff; opacity: .16; }
.contact .big-star svg { width: 100%; height: 100%; animation: spin 60s linear infinite; }
.contact h2 { font-size: var(--t-5); max-width: 16ch; position: relative; }
.contact p { position: relative; margin-top: 18px; font-size: var(--t-2); opacity: .85; }
.contact .mail {
  position: relative; display: inline-block; margin-top: 36px; font-size: clamp(1.6rem, 5.6vw, 5rem); font-weight: 850; letter-spacing: -.03em;
  text-decoration: none; direction: ltr; word-break: break-all; line-height: 1.1;
  background: linear-gradient(currentColor, currentColor) 0 100% / 100% 4px no-repeat; padding-bottom: 8px;
  transition: background-size .5s var(--ease);
}
.contact .mail:hover { background-size: 0 4px; background-position: 100% 100%; }
.contact .row { position: relative; display: flex; flex-wrap: wrap; gap: 14px 28px; margin-top: 44px; align-items: center; }
.contact .row a { text-underline-offset: 5px; font-weight: 650; }
.contact .btn { border-color: #fff; color: #fff; }
.contact .btn::before { background: #fff; }
.contact .btn:hover { color: var(--persian); border-color: #fff; }
.contact .btn.solid { background: #fff; color: var(--persian); }
footer.foot { padding-block: 26px; font-size: var(--t-0); color: rgba(255, 255, 255, .7); background: var(--persian); }

/* ---------- lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 98; display: grid; place-items: center; padding: 24px;
  background: color-mix(in srgb, var(--ink-base) 92%, transparent); opacity: 0; pointer-events: none; transition: opacity .3s;
}
.lightbox.open { opacity: 1; pointer-events: auto; }
.lightbox img { max-height: 92vh; max-width: min(1500px, 100%); width: auto; border-radius: 12px; transform: scale(.94); transition: transform .4s var(--ease); }
.lightbox.open img { transform: none; }
.lightbox button { position: absolute; top: 18px; inset-inline-end: 18px; width: 46px; height: 46px; border-radius: 50%; border: 0; background: #fff; font-size: 20px; cursor: pointer; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  body::after { display: none; }
}
@media print {
  .top, .lightbox, .skip, .cursor, .curtain { display: none !important; }
  body { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  body::after { display: none; }
}