/* Skygravity — portail de la famille Oxygen. Charte des sites Oxygen : Poppins, bleus Oxygen, logos en couleurs sur fond clair. */

@font-face { font-family: Poppins; font-style: normal; font-weight: 400; font-display: swap; src: url(../fonts/poppins-latin-400.woff2) format("woff2"); 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; }
@font-face { font-family: Poppins; font-style: normal; font-weight: 400; font-display: swap; src: url(../fonts/poppins-latin-ext-400.woff2) format("woff2"); unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: Poppins; font-style: normal; font-weight: 700; font-display: swap; src: url(../fonts/poppins-latin-700.woff2) format("woff2"); 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; }
@font-face { font-family: Poppins; font-style: normal; font-weight: 700; font-display: swap; src: url(../fonts/poppins-latin-ext-700.woff2) format("woff2"); unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }

:root {
  --blue: #5797bb; --petrol: #326275; --ink: #1d2b33; --text: #33424c; --grey: #5c6670;
  --bg: #f4f7f9; --line: #dfe7ec; --line-2: #edf2f5; --wire: #c9dbe6;
  --radius: 22px; --shadow: 0 30px 60px -36px rgba(18, 32, 43, .35);
}

/* Couleurs des 5 marques (second mot de chaque logo) et largeur du logo (viewBox), pour garder la même taille de lettres partout */
.b-stream { --c: #5797bb; --c-tx: #3f7fa3; --vw: 269.994; }
.b-event  { --c: #275c71; --c-tx: #275c71; --vw: 241.555; }
.b-stage  { --c: #493694; --c-tx: #493694; --vw: 235.988; }
.b-cam    { --c: #52c1b2; --c-tx: #2f9b8d; --vw: 207.799; }
.b-cast   { --c: #f1bf52; --c-tx: #b8861b; --vw: 216.677; }
.lg { display: block; flex-shrink: 0; }
.lg img { display: block; width: calc(var(--vw) * var(--s, .8) * 1px); max-width: 100%; height: auto; }

/* Langue : seule la langue active est affichée */
html[lang="fr"] [lang="en"], html[lang="en"] [lang="fr"] { display: none !important; }

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; -webkit-text-size-adjust: 100%; }
body { position: relative; font: 400 16px/1.65 Poppins, system-ui, sans-serif; color: var(--text); background: #fff; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; }
ul { list-style: none; }
button, input, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid rgba(87, 151, 187, .55); outline-offset: 3px; border-radius: 6px; }
.wrap { width: min(1200px, 100% - 48px); margin-inline: auto; }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--petrol); color: #fff; padding: 10px 16px; border-radius: 8px; }
.skip:focus { top: 12px; }

.kicker { font: 700 13px/1.3 Poppins; letter-spacing: .22em; text-transform: uppercase; color: var(--blue); }
h1, h2, h3 { color: var(--ink); font-weight: 700; }
h2 { font-size: clamp(1.75rem, 1.2rem + 1.8vw, 2.5rem); line-height: 1.2; letter-spacing: -.015em; margin-top: 14px; }
.intro { color: var(--grey); font-size: 1.06rem; margin-top: 12px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 15px 28px; border-radius: 12px; font: 700 1rem/1 Poppins; border: 0; cursor: pointer; transition: transform .2s, box-shadow .2s, background-color .2s; }
.btn-main { color: #fff; background: linear-gradient(135deg, #5f9fc4, #326275); box-shadow: 0 10px 24px -10px rgba(50, 98, 117, .7); }
.btn-main:hover { transform: translateY(-2px); box-shadow: 0 16px 30px -12px rgba(50, 98, 117, .8); }
.btn-line { color: var(--petrol); border: 2px solid var(--petrol); padding: 13px 26px; }
.btn-line:hover { background: rgba(50, 98, 117, .06); }
.btn-sm { padding: 12px 22px; font-size: .94rem; }

/* ---------- Ciel clair (fond du haut de page) ---------- */
.sky { position: absolute; left: 0; right: 0; top: 0; height: 860px; z-index: -1; overflow: hidden; -webkit-mask-image: linear-gradient(#000 72%, transparent); mask-image: linear-gradient(#000 72%, transparent);
  background: radial-gradient(900px 520px at 85% 10%, #dcebf4 0, transparent 70%), radial-gradient(700px 500px at 0% 100%, #eaf3f8 0, transparent 70%), linear-gradient(180deg, #f7fbfd, #eef5f9 85%, #fff); }
.sky::before, .sky::after { content: ""; position: absolute; border-radius: 50%; border: 1px solid rgba(87, 151, 187, .18); }
.sky::before { width: 520px; height: 520px; right: -120px; top: 120px; }
.sky::after { width: 300px; height: 300px; right: 140px; top: 360px; background: rgba(255, 255, 255, .35); }

/* ---------- En-tête ---------- */
.nav { position: sticky; top: 0; z-index: 50; transition: background-color .25s, box-shadow .25s; }
.nav.scrolled { background: rgba(255, 255, 255, .94); box-shadow: 0 1px 0 var(--line); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.nav .bar { height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 0 40px; }
/* Pastille S (version claire du favicon) à gauche du logo, à la hauteur du logo : du haut des lettres au bas de la phrase */
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-ic { width: 42px; height: 42px; }
.brand-sep { width: 1.5px; height: 34px; border-radius: 1px; background: #c9dbe6; } /* séparateur discret entre la pastille et le logo */
.brand span img { width: 183px; height: auto; }
.menu { display: flex; gap: 30px; font-size: .94rem; }
.menu a { position: relative; padding: 6px 0; color: var(--text); }
.menu a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; border-radius: 2px; background: var(--blue); transform: scaleX(0); transition: transform .2s; }
.menu a:hover::after, .menu a.active::after { transform: scaleX(1); }
.menu .menu-contact { display: none; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.lang { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: #fff; }
.lang button { border: 0; background: none; padding: 9px 12px; font: 400 13px/1 Poppins; color: var(--grey); cursor: pointer; }
.lang button[aria-pressed="true"] { background: var(--petrol); color: #fff; font-weight: 700; }
.burger { display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 10px; background: #fff; cursor: pointer; position: relative; }
.burger span, .burger span::before, .burger span::after { position: absolute; left: 12px; width: 18px; height: 2px; border-radius: 2px; background: var(--ink); content: ""; transition: transform .2s, opacity .2s; }
.burger span { top: 20px; }
.burger span::before { left: 0; top: -6px; } .burger span::after { left: 0; top: 6px; }
.burger[aria-expanded="true"] span { background: transparent; }
.burger[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.burger[aria-expanded="true"] span::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Accueil ---------- */
.hero .wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; padding: 60px 0 110px; }
.hero h1 { font-size: clamp(2.2rem, 1.2rem + 3.3vw, 3.5rem); line-height: 1.1; letter-spacing: -.02em; margin-top: 18px; }
.hero h1 em { font-style: normal; color: var(--blue); }
.lead { font-size: 1.15rem; color: var(--grey); margin-top: 22px; max-width: 560px; }
.ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

.index { background: rgba(255, 255, 255, .88); border: 1px solid #e3ecf1; border-radius: var(--radius); box-shadow: var(--shadow); padding: 10px 26px; -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.index a { --s: .78; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 2px; border-top: 1px solid var(--line-2); transition: transform .2s; }
.index a:first-child { border-top: 0; }
.index a:hover { transform: translateX(4px); }
.dom { display: flex; align-items: center; gap: 9px; font-size: .88rem; color: var(--grey); white-space: nowrap; }
.dom i, .list i { width: 9px; height: 9px; border-radius: 50%; background: var(--c); flex-shrink: 0; }
.dom small { font: 700 .66rem/1 Poppins; letter-spacing: .08em; text-transform: uppercase; color: var(--c); border: 1px solid currentColor; border-radius: 999px; padding: 4px 7px; }
.index a:hover .dom { color: var(--c-tx); }

/* ---------- La famille ---------- */
.family { padding: 100px 0 96px; text-align: center; }
.family .intro { max-width: 640px; margin-inline: auto; }
.org { margin-top: 56px; }
.node { display: inline-flex; flex-direction: column; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 22px 28px; box-shadow: 0 16px 36px -26px rgba(18, 32, 43, .35); transition: transform .2s, border-color .2s; }
.node:hover { transform: translateY(-3px); border-color: var(--c); }
.node small { font-size: .82rem; line-height: 1.45; color: var(--grey); }
.root { --s: .86; position: relative; }
.root::after { content: ""; position: absolute; left: 50%; top: 100%; height: 30px; border-left: 1.5px solid var(--wire); }
.branches { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-top: 64px; position: relative; }
.branches::before { content: ""; position: absolute; left: 25%; right: 25%; top: -34px; height: 34px; border: 1.5px solid var(--wire); border-bottom: 0; border-radius: 14px 14px 0 0; }
.branches > *, .pair > * { min-width: 0; }
.group { background: var(--bg); border-radius: var(--radius); padding: 26px 26px 30px; }
.group h3 { font-size: 13px; letter-spacing: .2em; text-transform: uppercase; color: var(--petrol); }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 20px; }
.pair .node { --s: .62; width: 100%; padding: 22px 12px 20px; }

/* ---------- Quel site pour vous ---------- */
.needs { background: var(--bg); padding: 96px 0; }
.list { margin-top: 40px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.list li + li { border-top: 1px solid var(--line-2); }
.list a { --s: .62; display: grid; grid-template-columns: 14px 1fr auto 28px; align-items: center; gap: 22px; padding: 26px 32px; transition: background-color .2s; }
.list a:hover { background: #fafcfd; }
.list i { width: 12px; height: 12px; }
.list b { display: block; font-size: 1.2rem; line-height: 1.35; color: var(--ink); }
.list small { display: block; font-size: .94rem; color: var(--grey); margin-top: 3px; }
.list .lg { justify-self: end; }
.list em { font-style: normal; font-size: 1.4rem; color: var(--c-tx); justify-self: end; transition: transform .2s; }
.list a:hover em { transform: translateX(4px); }

/* ---------- Contact ---------- */
.contact { padding: 90px 0 100px; }
.box { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; background: linear-gradient(135deg, #eef5f9, #f8fbfc); border: 1px solid #e3ecf1; border-radius: 26px; padding: 54px 56px; }
.copy p { color: var(--grey); margin-top: 14px; font-size: 1.06rem; }
.copy .mail a { color: var(--petrol); font-weight: 700; border-bottom: 1px solid rgba(50, 98, 117, .35); }
.form { display: grid; gap: 14px; }
.field label { display: block; font-size: .86rem; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.field input, .field textarea { width: 100%; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 13px 15px; font-size: 1rem; transition: border-color .2s, box-shadow .2s; }
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 4px rgba(87, 151, 187, .15); }
.field [aria-invalid="true"] { border-color: #c0392b; }
.form .btn { justify-self: start; }
.form .btn:disabled { opacity: .6; cursor: wait; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.status { font-size: .94rem; min-height: 1.4em; }
.status.ok { color: #1e7b52; }
.status.err { color: #b42318; }

/* ---------- Pied de page ---------- */
footer { border-top: 1px solid var(--line); padding: 34px 0; font-size: .88rem; color: var(--grey); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 14px 30px; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.foot-brand { display: flex; align-items: center; gap: 10px; }
.foot-ic { width: 30px; height: 30px; flex-shrink: 0; }
footer nav a:hover { color: var(--petrol); }

/* ---------- Apparition au défilement ---------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease var(--d, 0s), transform .6s ease var(--d, 0s); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .index a, .node, .list em { transition: none; }
}

/* ---------- Écrans moyens et petits ---------- */
@media (max-width: 1080px) {
  .nav .bar { padding: 0 24px; }
  .menu { gap: 22px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 44px; padding: 40px 0 80px; }
  .hero-copy { max-width: 680px; }
  .index { max-width: 620px; }
}
@media (max-width: 900px) {
  .burger { display: block; }
  .nav-actions .btn-sm { display: none; }
  .menu { display: none; position: absolute; left: 16px; right: 16px; top: 80px; flex-direction: column; gap: 0; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); padding: 8px 20px; }
  .menu.open { display: flex; }
  .menu a { padding: 14px 0; border-top: 1px solid var(--line-2); }
  .menu a:first-child { border-top: 0; }
  .menu a::after { display: none; }
  .menu .menu-contact { display: block; }
  .nav.menu-open { background: #fff; }
  .branches { grid-template-columns: 1fr; gap: 24px; margin-top: 34px; }
  .branches::before { display: none; }
  .root::after { height: 34px; }
  .box { grid-template-columns: 1fr; gap: 34px; padding: 40px 32px; }
}
@media (max-width: 760px) {
  .family, .needs { padding: 72px 0; }
  .contact { padding: 64px 0 72px; }
  .list a { grid-template-columns: 12px 1fr 20px; gap: 6px 16px; padding: 22px 20px; }
  .list .txt { grid-column: 2; }
  .list i { align-self: start; margin-top: 9px; }
  .list .lg { grid-column: 2; grid-row: 2; justify-self: start; margin-top: 8px; }
  .list em { grid-column: 3; grid-row: 1 / span 2; }
  .list b { font-size: 1.06rem; }
}
@media (max-width: 560px) {
  .wrap { width: calc(100% - 32px); }
  .nav .bar { height: 76px; padding: 0 16px; }
  .brand { gap: 10px; }
  .brand-ic { width: 34px; height: 34px; }
  .brand-sep { height: 28px; }
  .brand span img { width: 150px; }
  .menu { top: 70px; }
  .hero .wrap { padding: 28px 0 64px; }
  .index { padding: 6px 18px; }
  .index a { --s: .62; flex-direction: column; align-items: flex-start; gap: 8px; padding: 16px 0; }
  .root { --s: .72; padding: 20px 16px; }
  .pair { grid-template-columns: 1fr; }
  .pair .node { --s: .66; }
  .group { padding: 22px 16px; }
  .box { padding: 30px 20px; border-radius: 20px; }
  .ctas .btn { flex: 1 1 auto; }
}
/* Petits téléphones : pastille, logo et boutons resserrés pour tenir sur une ligne ; sous 350 px, le logo seul */
@media (max-width: 400px) {
  .nav .bar { gap: 12px; }
  .nav-actions { gap: 8px; }
  .lang button { padding: 9px 10px; }
  .brand { gap: 7px; }
  .brand-ic { width: 30px; height: 30px; }
  .brand-sep { height: 24px; }
  .brand span img { width: 126px; }
}
@media (max-width: 350px) {
  .brand-ic, .brand-sep { display: none; }
}