/* StreamyChat, page de présentation (streamychat.live).
   La charte web de VTrix (Nuit, Sora, rubriques à filet, pas de tuiles, pas d'orbe, pas de dégradé
   dans les titres) aux couleurs de StreamyChat : le violet de son icône. Le mouvement reste sobre :
   un chat qui vit dans le hero, des apparitions douces au défilement, rien d'épinglé. */

@font-face { font-family: Sora; font-weight: 400; font-display: swap; src: url(../fonts/sora-latin-400-normal.woff2) format('woff2'); }
@font-face { font-family: Sora; font-weight: 600; font-display: swap; src: url(../fonts/sora-latin-600-normal.woff2) format('woff2'); }
@font-face { font-family: Sora; font-weight: 700; font-display: swap; src: url(../fonts/sora-latin-700-normal.woff2) format('woff2'); }
@font-face { font-family: Sora; font-weight: 800; font-display: swap; src: url(../fonts/sora-latin-800-normal.woff2) format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-weight: 400; font-display: swap; src: url(../fonts/jetbrains-mono-latin-400-normal.woff2) format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-weight: 500; font-display: swap; src: url(../fonts/jetbrains-mono-latin-500-normal.woff2) format('woff2'); }

:root {
  --bg: #110c1d; --bg-2: #18112a; --bg-3: #221939;
  /* Le violet de l'icône (#a66cff en haut, #5b30b5 en bas) ; ambre rare pour ce qui arrive plus tard */
  --accent: #8a55f7; --accent-text: #c2a5ff; --accent-hover: #9d6eff; --accent-soft: rgb(138 85 247 / 16%);
  --later: #ffb547; --later-light: #ffd99a; --later-soft: rgb(255 181 71 / 14%);
  --live: #ff4d5e;
  --text: #f1eef8; --text-dim: #c4bdd6; --text-faint: #8f87a6;
  --line: rgb(255 255 255 / 10%); --line-strong: rgb(255 255 255 / 18%); --fill: rgb(255 255 255 / 6%); --fill-hover: rgb(255 255 255 / 12%);
  --shadow: 0 24px 70px rgb(0 0 0 / 45%);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --max: 1180px; --gutter: clamp(16px, 4vw, 40px);
  --mono: 'JetBrains Mono', monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { background: var(--bg); -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
/* La Nuit, violette : une lueur au centre haut, une autre qui monte du bas, un grain à 5 % */
body::before { content: ""; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background: radial-gradient(55% 50% at 70% 20%, rgb(98 58 180 / 30%), transparent 72%), radial-gradient(120% 80% at 50% 110%, rgb(170 120 255 / 7%), transparent 60%), linear-gradient(180deg, #140e22, #110c1d); }
body::after { content: ""; position: fixed; inset: 0; z-index: 100; pointer-events: none; opacity: .05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }
body { margin: 0; background: transparent; color: var(--text); font-family: Sora, system-ui, sans-serif; font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
em { font-style: normal; color: var(--accent-text); }
h1, h2, h3 { margin: 0; font-weight: 800; letter-spacing: -.035em; line-height: 1; text-wrap: balance; }
h2 { font-size: clamp(34px, 4.6vw, 64px); }
h3 { font-size: 20px; font-weight: 700; letter-spacing: -.02em; line-height: 1.25; }
p, li { text-wrap: pretty; }
code { font: 500 .88em var(--mono); padding: 2px 6px; border-radius: 5px; background: var(--fill); border: 1px solid var(--line); }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.skip { position: absolute; left: -999px; top: 8px; z-index: 200; background: var(--accent); color: #fff; padding: 8px 14px; border-radius: 8px; font-weight: 600; }
.skip:focus { left: 8px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.eyebrow { margin: 0 0 18px; font: 500 12px var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--accent-text); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.eyebrow i { width: 4px; height: 4px; border-radius: 50%; background: var(--text-faint); }
.sub { color: var(--text-dim); font-size: clamp(16px, 1.4vw, 18px); max-width: 560px; margin: 22px 0 0; }
.mono { font: 500 12px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-faint); }

.btn { display: inline-flex; align-items: center; gap: 10px; padding: 13px 22px; border-radius: 10px; font-weight: 600; font-size: 15px; background: var(--accent); color: #fff; transition: background .14s, transform .14s var(--ease), box-shadow .2s; white-space: nowrap; border: 0; cursor: pointer; font-family: inherit; box-shadow: 0 8px 28px rgb(138 85 247 / 30%); }
.btn:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 10px 34px rgb(138 85 247 / 42%); }
.btn svg { width: 18px; height: 18px; fill: currentColor; flex: none; }
.btn-ghost { background: var(--fill); border: 1px solid var(--line); box-shadow: none; }
.btn-ghost:hover { background: var(--fill-hover); box-shadow: none; }
.btn.small { padding: 9px 14px; font-size: 13.5px; }
.tag { display: inline-flex; align-items: center; gap: 7px; font: 500 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; border: 1px solid; }
.tag::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.tag.now { color: var(--accent-text); border-color: rgb(194 165 255 / 35%); }
.tag.later { color: var(--later); border-color: rgb(255 181 71 / 40%); }

/* ---------- Barre du haut ---------- */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 50; padding: 14px var(--gutter); border-bottom: 1px solid transparent; transition: background .25s, border-color .25s; }
.nav.scrolled { background: rgb(17 12 29 / 82%); border-color: var(--line); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
.nav-in { max-width: var(--max); margin: 0 auto; display: flex; align-items: center; gap: 22px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: -.02em; }
.brand img { width: 30px; height: 30px; }
.nav-links { display: flex; gap: 2px; }
.nav-links a { padding: 8px 12px; border-radius: 8px; color: var(--text-dim); font-size: 14px; font-weight: 500; transition: color .14s, background .14s; }
.nav-links a:hover { color: var(--text); background: var(--fill); }
.nav-end { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.lang { display: flex; padding: 3px; border-radius: 8px; background: var(--fill); border: 1px solid var(--line); }
.lang a { font: 500 12px var(--mono); letter-spacing: .08em; color: var(--text-faint); padding: 5px 10px; border-radius: 6px; transition: color .14s, background .14s; }
.lang a:hover { color: var(--text); }
.lang a[aria-current="true"] { background: var(--accent-soft); color: var(--accent-text); }

/* ---------- Hero ---------- */
.hero { min-height: 100vh; min-height: 100svh; display: flex; align-items: center; padding: 110px 0 70px; }
.hero .wrap { width: 100%; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: clamp(32px, 5vw, 80px); align-items: center; }
.hero h1 { font-size: clamp(42px, 5.6vw, 84px); }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 34px; }
.hero-meta { margin-top: 22px; display: flex; gap: 18px; flex-wrap: wrap; }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta span::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }

/* La fenêtre de chat de la démo : les mesures de la vraie (barre de titre, onglet, saisie) */
.demo { position: relative; justify-self: center; width: min(100%, 440px); }
.demo::before { content: ""; position: absolute; inset: 8% -12% -6%; z-index: -1; background: radial-gradient(50% 50% at 50% 50%, rgb(138 85 247 / 34%), transparent 70%); filter: blur(10px); }
.win { --w-bg: #18171c; --w-bar: #1f1e24; --w-text: #efeff1; --w-dim: #adadb8; --w-line: rgb(255 255 255 / 8%); --w-input: #232229; --w-hl: rgb(145 70 255 / 22%); --w-hl-bar: #9147ff; --w-first: rgb(0 140 70 / 22%); --w-first-bar: #00c46a; --w-link: #5ea8ff; --w-mention: rgb(145 70 255 / 30%);
  border-radius: 14px; overflow: hidden; background: var(--w-bg); color: var(--w-text); box-shadow: var(--shadow), 0 0 0 1px rgb(255 255 255 / 8%); font-family: Inter, system-ui, 'Segoe UI', sans-serif; font-size: 14.5px; line-height: 1.45; transition: background .4s, color .4s; }
.win[data-theme="light"] { --w-bg: #f4f3f7; --w-bar: #e7e5ee; --w-text: #1d1b24; --w-dim: #6b6878; --w-line: rgb(0 0 0 / 9%); --w-input: #e9e7ef; --w-hl: rgb(145 70 255 / 16%); --w-first: rgb(0 160 90 / 16%); --w-link: #2b7bd6; --w-mention: rgb(145 70 255 / 20%); }
.win[data-theme="cosy"] { --w-bg: #1e1714; --w-bar: #261d19; --w-text: #f2e8df; --w-dim: #b3a497; --w-line: rgb(255 230 210 / 9%); --w-input: #2b221d; --w-hl: rgb(160 100 255 / 26%); --w-first: rgb(120 90 60 / 35%); --w-first-bar: #d9a066; --w-link: #6fb0ff; --w-mention: rgb(160 100 255 / 30%); }
.win[data-theme="light"] .u { filter: brightness(.72) saturate(1.3); }
.win-bar { display: flex; align-items: center; gap: 10px; padding: 10px 14px; background: var(--w-bar); font-weight: 600; font-size: 13.5px; transition: background .4s; }
.win-bar .dot { width: 7px; height: 7px; border-radius: 50%; background: #00c46a; box-shadow: 0 0 0 3px rgb(0 196 106 / 18%); }
.win-bar .ctl { margin-left: auto; display: flex; gap: 14px; color: var(--w-dim); }
.win-bar .ctl i { width: 10px; height: 10px; border: 1.5px solid currentColor; border-radius: 2px; opacity: .8; }
.win-bar .ctl i:last-child { border: 0; position: relative; }
.win-bar .ctl i:last-child::before, .win-bar .ctl i:last-child::after { content: ""; position: absolute; left: 50%; top: 50%; width: 12px; height: 1.5px; background: currentColor; transform: translate(-50%, -50%) rotate(45deg); }
.win-bar .ctl i:last-child::after { transform: translate(-50%, -50%) rotate(-45deg); }
.win-tabs { display: flex; align-items: stretch; border-bottom: 1px solid var(--w-line); font-size: 13px; }
.win-tabs b { font-weight: 400; color: var(--w-dim); padding: 6px 12px; }
.win-tabs span { padding: 6px 16px; color: var(--w-dim); }
.win-tabs span.on { color: var(--w-text); background: var(--w-input); box-shadow: inset 0 -2px 0 var(--accent); }
.win-feed { height: 400px; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; padding: 6px 0; -webkit-mask-image: linear-gradient(180deg, transparent, #000 18%); mask-image: linear-gradient(180deg, transparent, #000 18%); }
.msg { padding: 5px 16px; overflow-wrap: anywhere; animation: msg-in .45s var(--ease) both; }
.msg .u { font-weight: 700; }
.msg .b { display: inline-block; width: 15px; height: 15px; border-radius: 4px; vertical-align: -2px; margin-right: 5px; }
.msg .b::after { content: ""; display: block; width: 5px; height: 5px; margin: 5px; border-radius: 50%; background: #fff; }
.msg .at { background: var(--w-mention); border-radius: 4px; padding: 0 4px; font-weight: 600; }
.msg .lnk { color: var(--w-link); }
.msg.hl { background: var(--w-hl); box-shadow: inset 3px 0 0 var(--w-hl-bar); }
.msg.first { background: var(--w-first); box-shadow: inset 3px 0 0 var(--w-first-bar); }
.msg.ev { color: var(--w-dim); font-size: 13px; display: flex; gap: 8px; align-items: center; }
.msg.ev::before { content: ""; width: 3px; align-self: stretch; border-radius: 2px; background: var(--accent); }
.msg.ev strong { color: var(--w-text); }
@keyframes msg-in { from { opacity: 0; transform: translateY(12px); } }
.win-input { margin: 8px 10px 10px; padding: 9px 12px; border-radius: 8px; background: var(--w-input); color: var(--w-dim); font-size: 13.5px; display: flex; justify-content: space-between; transition: background .4s; }
.win-input i { width: 15px; height: 15px; border: 1.5px solid currentColor; border-radius: 50%; }
.demo-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 14px; flex-wrap: wrap; }
.themes { display: flex; padding: 3px; border-radius: 9px; background: var(--fill); border: 1px solid var(--line); }
.themes button { font: 500 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--text-faint); background: none; border: 0; padding: 6px 11px; border-radius: 6px; cursor: pointer; transition: color .14s, background .14s; }
.themes button:hover { color: var(--text); }
.themes button[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent-text); }
.demo-note { font-size: 12px; color: var(--text-faint); }

/* ---------- Sections ---------- */
.sec { padding: clamp(80px, 11vw, 150px) 0; border-top: 1px solid var(--line); }
.split { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.split-head { position: sticky; top: 110px; }

/* Rubriques à filet, jamais de tuiles */
.rows { list-style: none; margin: 0; padding: 0; counter-reset: row; }
.rows li { counter-increment: row; display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 4px 18px; padding: 26px 0; border-top: 1px solid var(--line); }
.rows li:last-child { border-bottom: 1px solid var(--line); }
.rows li::before { content: counter(row, decimal-leading-zero); grid-row: span 2; font: 500 13px var(--mono); color: var(--accent-text); padding-top: 4px; }
.rows p { margin: 6px 0 0; color: var(--text-dim); }
.rows li { transition: background .2s; }

/* Thèmes */
.shots { margin-top: clamp(40px, 6vw, 70px); }
.shot { border-radius: 14px; overflow: hidden; box-shadow: var(--shadow), 0 0 0 1px var(--line); background: #0d0c10; }
.shot-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 70px); align-items: center; margin-top: clamp(40px, 6vw, 70px); }
.shot-row .shot { justify-self: center; max-width: 440px; }
.cap { margin: 14px 0 0; font-size: 13.5px; color: var(--text-faint); }
.checks { list-style: none; padding: 0; margin: 24px 0 0; }
.checks li { position: relative; padding: 9px 0 9px 28px; color: var(--text-dim); border-top: 1px solid var(--line); }
.checks li:last-child { border-bottom: 1px solid var(--line); }
.checks li::before { content: ""; position: absolute; left: 4px; top: 17px; width: 9px; height: 5px; border-left: 2px solid var(--accent-text); border-bottom: 2px solid var(--accent-text); transform: rotate(-45deg); }
.checks b { color: var(--text); font-weight: 600; }

/* Gratuit, et la suite */
.promise { font-size: clamp(20px, 2.1vw, 28px); line-height: 1.4; font-weight: 600; letter-spacing: -.015em; max-width: 820px; margin: 26px 0 0; color: var(--text-dim); }
.promise b { color: var(--text); }
.xd { margin-top: clamp(48px, 7vw, 80px); padding-left: 24px; border-left: 2px solid var(--later); max-width: 760px; }
.xd h3 { margin-top: 14px; font-size: clamp(22px, 2.4vw, 30px); }
.xd h3 b { color: var(--later-light); }
.xd p { color: var(--text-dim); margin: 12px 0 0; }
.xd ul { margin: 14px 0 0; padding: 0; list-style: none; }
.xd li { padding: 8px 0 8px 22px; position: relative; color: var(--text-dim); }
.xd li::before { content: ""; position: absolute; left: 2px; top: 17px; width: 8px; height: 2px; background: var(--later); }
.xd li b { color: var(--text); }
.xd .fine { font: 500 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--later); margin-top: 18px; }

/* Téléchargement */
.dl { margin-top: 36px; border-top: 1px solid var(--line); }
.dl-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 28px; align-items: center; padding: 24px 0; border-bottom: 1px solid var(--line); }
.dl-row h3 { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.dl-row code { font-size: 12.5px; }
.dl-row p { margin: 6px 0 0; color: var(--text-dim); }
.note { margin-top: 28px; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 14px; color: var(--text-dim); font-size: 14.5px; max-width: 760px; }
.note::before { content: "i"; width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--line-strong); display: grid; place-items: center; font: 600 12px var(--mono); color: var(--text-faint); margin-top: 1px; }
.note p { margin: 0; }
.note p + p { margin-top: 8px; }
.note b { color: var(--text); font-weight: 600; }
.inline-link { color: var(--accent-text); border-bottom: 1px solid rgb(194 165 255 / 35%); transition: border-color .14s; }
.inline-link:hover { border-color: var(--accent-text); }

/* Questions : des rubriques à filet qui s'ouvrent, le texte reste dans la page pour les robots */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: minmax(0, 1fr) 22px; gap: 18px; align-items: center; padding: 22px 0; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary h3 { font-size: 18px; transition: color .14s; }
.faq summary:hover h3 { color: var(--accent-text); }
.faq summary::after { content: ""; width: 10px; height: 10px; justify-self: center; border-right: 2px solid var(--accent-text); border-bottom: 2px solid var(--accent-text); transform: translateY(-3px) rotate(45deg); transition: transform .25s var(--ease); }
.faq details[open] summary::after { transform: translateY(2px) rotate(-135deg); }
.faq details p { margin: -6px 0 0; padding: 0 40px 24px 0; color: var(--text-dim); }

/* Pied */
.foot { border-top: 1px solid var(--line); padding: 40px 0 50px; color: var(--text-faint); font-size: 13.5px; }
.foot .wrap { display: flex; gap: 18px 30px; align-items: center; flex-wrap: wrap; }
.foot nav { display: flex; gap: 18px; flex-wrap: wrap; }
.foot nav a:hover { color: var(--text); }
.foot .legal { margin-left: auto; }

/* Apparitions au défilement : seulement si le script tourne et que le mouvement est permis */
.js .rv { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease), transform .8s var(--ease); transition-delay: var(--d, 0s); }
.js .rv.in { opacity: 1; transform: none; }
/* Le hero, lui, n'attend personne : il monte dès le chargement */
.js .hero .rv { opacity: 1; transform: none; transition: none; animation: rise .9s var(--ease) both; animation-delay: var(--d, 0s); }
@keyframes rise { from { opacity: 0; transform: translateY(22px); } }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .rv, .js .hero .rv { opacity: 1; transform: none; transition: none; animation: none; }
  .msg { animation: none; }
}

/* ---------- Petits écrans ---------- */
@media (max-width: 960px) {
  .hero .wrap, .split, .shot-row { grid-template-columns: minmax(0, 1fr); }
  .split-head { position: static; }
  .hero { padding-top: 100px; }
  .shot-row .shot { order: 2; }
}
@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav-end .btn { display: none; }
  .win-feed { height: 340px; }
  .dl-row { grid-template-columns: minmax(0, 1fr); }
  .dl-row .btn { justify-self: start; }
  .foot .legal { margin-left: 0; }
}