/* FLUXL website: the catalog's dark isometric look, animated. Logical properties throughout,
   so one stylesheet serves the Persian (rtl) and English (ltr) pages. */
@font-face { font-family: Vazirmatn; src: url(Vazirmatn-Regular.ttf) format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: Vazirmatn; src: url(Vazirmatn-Bold.ttf) format("truetype"); font-weight: 700; font-display: swap; }

:root {
  --bg: #0B1630; --bg2: #101D3B; --panel: #1B2848; --line: rgba(185, 199, 226, .14);
  --text: #FFFFFF; --muted: #B9C7E2;
  --teal: #19C3B1; --cyan: #3BA7F0; --indigo: #6C7BF2; --violet: #A374F7; --amber: #F6B445;
  --radius: 14px; --wrap: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 17px/1.75 Vazirmatn, system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
.art { width: 100%; height: auto; overflow: visible; }   /* an inline svg with no width collapses in a centred box */
.hero-visual, .scene { width: 100%; }
h1, h2, h3 { margin: 0; line-height: 1.3; }
p { margin: 0; color: var(--muted); }
a { color: inherit; }
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: 24px; }

/* header */
.top { position: sticky; top: 0; z-index: 10; background: rgba(11, 22, 48, .72); backdrop-filter: blur(12px); border-block-end: 1px solid transparent; transition: border-color .3s; }
.top.scrolled { border-color: var(--line); }
.bar { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 22px; text-decoration: none; letter-spacing: .5px; }
nav { display: flex; gap: 22px; margin-inline-start: auto; }
nav a, .lang { text-decoration: none; color: var(--muted); font-size: 15px; transition: color .2s; }
nav a:hover, .lang:hover { color: var(--text); }
.lang { border: 1px solid var(--line); border-radius: 999px; padding: 4px 14px; }

/* hero */
.hero { position: relative; overflow: hidden; padding-block: 56px 40px;
  background: radial-gradient(ellipse at 30% 40%, rgba(59, 167, 240, .12), transparent 60%),
              repeating-linear-gradient(30deg, transparent 0 46px, rgba(185, 199, 226, .05) 46px 47px),
              repeating-linear-gradient(-30deg, transparent 0 46px, rgba(185, 199, 226, .05) 46px 47px); }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.kicker { color: var(--teal); font-size: 16px; margin-block-end: 14px; }
h1 { font-size: clamp(34px, 5vw, 58px); font-weight: 700; }
.lead { font-size: 19px; margin-block: 20px 32px; max-width: 34em; }
.actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 26px; border-radius: 10px; background: var(--teal); color: #06221F; font-weight: 700; text-decoration: none; transition: transform .2s, box-shadow .2s; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(25, 195, 177, .35); }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.hero-visual { max-width: 560px; margin-inline: auto; }
.hero-visual.small { max-width: 380px; }

/* sections */
.sec { padding-block: 88px; }
.sec.alt { background: var(--bg2); }
h2 { font-size: clamp(26px, 3.2vw, 38px); margin-block-end: 44px; }
h3 { font-size: 19px; margin-block-end: 6px; }
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.scene { margin: 0; position: relative; }
.scene figcaption { text-align: center; font-size: 14px; color: var(--muted); margin-block-start: 10px; }
.scene.tall { max-width: 460px; margin-inline: auto; }
.scene.wide { max-width: 980px; margin-inline: auto; }
.note { font-size: 14px; font-style: italic; margin-block-start: 16px; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; transition: transform .35s, border-color .35s, box-shadow .35s; }
.card:hover { transform: translateY(-6px); border-color: rgba(25, 195, 177, .45); box-shadow: 0 18px 40px rgba(0, 0, 0, .35); }
.card .cube, .card .tile { margin-block-end: 18px; transition: transform .5s; }
.card:hover .cube { transform: translateY(-6px) rotate(0deg); }
.card:hover .tile { transform: translateY(-4px) scale(1.05); }

/* challenge vs. answer */
.vs-head { display: grid; grid-template-columns: 1fr 40px 1fr; padding-inline-start: 82px; margin-block-end: 10px; font-weight: 700; }
.vs-head .pain { color: var(--amber); } .vs-head .fix { color: var(--teal); grid-column: 3; }
.vs-row { display: grid; grid-template-columns: 58px 1fr 40px 1fr; gap: 24px; align-items: center; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; margin-block-end: 14px; }
.vs-pain p { font-size: 15px; }
.vs-fix { color: var(--text); }
.arrow { color: var(--teal); font-size: 26px; text-align: center; }
[dir="rtl"] .arrow { transform: scaleX(-1); }

/* lists beside a scene */
.layers, .sources, .why { list-style: none; margin: 0; padding: 0; display: grid; gap: 22px; }
.layers li, .sources li, .why li { display: flex; gap: 16px; align-items: flex-start; }
.dot { flex: none; width: 14px; height: 14px; border-radius: 50%; margin-block-start: 8px; box-shadow: 0 0 14px currentColor; }
.c0 { color: var(--teal); background: var(--teal); } .c1 { color: var(--cyan); background: var(--cyan); }
.c2 { color: var(--indigo); background: var(--indigo); } .c3 { color: var(--violet); background: var(--violet); }
.c4 { color: var(--amber); background: var(--amber); }
h3.c0, h3.c1, h3.c2, h3.c3, h3.c4 { background: none; }
.sources { gap: 16px; } .sources h3 { font-size: 17px; margin: 0; } .sources p { font-size: 15px; }

/* ecosystem labels over the scene */
.eco-label { position: absolute; transform: translateX(-50%); white-space: nowrap; font-size: 13px; font-weight: 700; pointer-events: none; }
.c-docs, .c-web { color: var(--teal); } .c-sync, .c-dev { color: var(--cyan); } .c-app { color: var(--indigo); }
.c-bot, .c-gpu { color: var(--violet); } .c-sec { color: var(--amber); }

/* coding agent */
.flow { display: grid; grid-template-columns: 1fr 40px 1fr 40px 1fr; align-items: center; text-align: center; margin-block: 28px; }
.flow-node h3 { color: var(--teal); }
.chips { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.chip, .point { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.chip { text-align: center; } .chip p, .point p { font-size: 15px; }
.point h3 { color: var(--teal); }

/* deployment */
.labels5, .labels4 { display: grid; text-align: center; gap: 12px; margin-block: 8px 48px; }
.labels5 { grid-template-columns: repeat(5, 1fr); max-width: 980px; margin-inline: auto; }
.labels4 { grid-template-columns: repeat(4, 1fr); margin-block-end: 0; }
.labels4 .when { display: block; color: var(--muted); font-size: 14px; margin-block-end: 6px; }
.labels4 p { color: var(--text); font-size: 15px; }
.labels5 p { font-size: 14px; }
.growth { grid-template-columns: 1.4fr 1fr; align-items: stretch; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.panel-title { color: var(--cyan); font-size: 17px; margin-block-end: 12px; }
.labels3 { display: grid; grid-template-columns: repeat(3, 1fr); text-align: center; font-weight: 700; font-size: 14px; margin-block-start: 6px; }
.points { display: grid; gap: 14px; }
/* the art reads right to left; the English page mirrors the scenes that have a direction */
[dir="ltr"] .flip svg { transform: scaleX(-1); }

/* proof */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.stat { background: linear-gradient(160deg, var(--panel), #16224180); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.num { font-size: 46px; font-weight: 700; line-height: 1.2; margin-block-end: 10px;
  background: linear-gradient(90deg, #fff, var(--teal)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* closing */
.cta { background: radial-gradient(ellipse at 70% 50%, rgba(25, 195, 177, .12), transparent 60%); }
.cta h2 { margin-block-end: 32px; }
.badge { flex: none; width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; background: var(--teal); color: #06221F; font-weight: 700; font-size: 20px; }
.why li { align-items: center; }
.next { color: var(--amber); font-weight: 700; font-size: 19px; margin-block-start: 30px; }
.foot { border-block-start: 1px solid var(--line); padding-block: 28px; color: var(--muted); font-size: 14px; text-align: center; }

/* ── motion ──────────────────────────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s ease, transform .8s cubic-bezier(.2, .7, .2, 1); transition-delay: calc(var(--d, 0) * 110ms); }
.reveal.in { opacity: 1; transform: none; }

/* hero: the stack breathes apart and together, services bob, cubes drift */
.hero-art .slab { animation: breathe 6s ease-in-out infinite; animation-delay: calc(var(--i) * -0.18s); transform-box: fill-box; }
@keyframes breathe { 0%, 100% { transform: translateY(calc((var(--i) - 2) * -6px)); } 50% { transform: translateY(calc((var(--i) - 2) * 10px)); } }
.hero-art .svc { animation: bob 2.4s ease-in-out infinite; animation-delay: calc(var(--k) * -0.45s); }
@keyframes bob { 50% { transform: translateY(-9px); } }
.hero-art .drift { animation: drift 7s ease-in-out infinite; animation-delay: calc(var(--k) * -1.3s); }
@keyframes drift { 50% { transform: translate(6px, -16px); } }

/* every dashed beam in the artwork flows */
.art [stroke-dasharray] { animation: flow 1.2s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -14; } }
/* scenes float gently */
.scene .art { animation: float 8s ease-in-out infinite; }
@keyframes float { 50% { translate: 0 -10px; } }
.art.breathe { animation-duration: 6s; }
.art.hub { animation-duration: 5s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  .hero-art .packet { display: none; }
}

/* ── responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 980px) {
  nav { display: none; }
  .lang { margin-inline-start: auto; }
  .hero-grid, .split, .growth { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 420px; }
  .cards, .stats { grid-template-columns: repeat(2, 1fr); }
  .chips { grid-template-columns: repeat(2, 1fr); }
  .labels4 { grid-template-columns: repeat(2, 1fr); gap: 28px; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .sec { padding-block: 64px; }
  .cards, .stats, .chips { grid-template-columns: 1fr; }
  .vs-head { display: none; }
  .vs-row { grid-template-columns: 48px 1fr; }
  .vs-row .arrow { display: none; }
  .vs-fix { grid-column: 1 / -1; border-block-start: 1px solid var(--line); padding-block-start: 12px; }
  .flow { grid-template-columns: 1fr; gap: 14px; }
  .flow .arrow { transform: rotate(90deg); }
  .labels5 { grid-template-columns: repeat(2, 1fr); }
  .eco-label { font-size: 10px; }
  .num { font-size: 40px; }
}