/* OVO Sound, 2018 · étude de cas courte. Habillage portfolio commun : Geist, monochrome (scène sombre, papier clair).
   Idée propre au projet : le film est la pièce maîtresse, découpé en chapitres ; la maquette défile dans un écran au rythme de la lecture.
   Le doré n'entre que par les travaux montrés. Angles vifs partout, comme Fullsix. */
@font-face{font-family:"Geist";font-weight:400;font-display:swap;src:url(fonts/geist-sans-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Geist";font-weight:500;font-display:swap;src:url(fonts/geist-sans-latin-500-normal.woff2) format("woff2")}
@font-face{font-family:"Geist Mono";font-weight:400;font-display:swap;src:url(fonts/geist-mono-latin-400-normal.woff2) format("woff2")}
:root{
  color-scheme:only light;
  --paper:#ececea; --ink:#121314; --muted:#5d5f64; --line:rgba(18,19,20,.14);
  --stage:#0b0c0d; --stage-ink:#ebebe8; --stage-muted:#9a9da3; --stage-line:rgba(235,235,232,.14);
  --sans:"Geist",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"Geist Mono",ui-monospace,"SF Mono",Menlo,monospace;
  --ease:cubic-bezier(.22,1,.36,1);--ease-out:cubic-bezier(.23,1,.32,1);
  --frame:1920px;
  --gutter:max(20px, env(safe-area-inset-left, 0px), calc((100vw - var(--frame)) / 2 + 20px));
  --gutter-r:max(20px, env(safe-area-inset-right, 0px), calc((100vw - var(--frame)) / 2 + 20px));
  --sec:clamp(96px, 12vw, 200px);
}
@media (min-width:861px){:root{--gutter:max(48px, calc((100vw - var(--frame)) / 2 + 48px));--gutter-r:max(64px, calc((100vw - var(--frame)) / 2 + 64px))}}
*{box-sizing:border-box;margin:0;padding:0}
html{background:var(--stage)}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:clamp(16px, 10px + .45vw, 20px);line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:clip}
img,video{display:block;max-width:100%;height:auto}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid currentColor;outline-offset:4px;border-radius:0}
.wrap{padding-left:var(--gutter);padding-right:var(--gutter-r)}
.mono{font-family:var(--mono);font-size:clamp(12px, 9px + .22vw, 14px);letter-spacing:.01em;line-height:1.45}
.muted{color:var(--muted)}
.nw{white-space:nowrap}
.line{display:block;overflow:hidden;padding-bottom:.08em;margin-bottom:-.08em}
.line>span{display:block}
section{position:relative;padding-top:var(--sec);padding-bottom:var(--sec)}
section[data-cs-theme=dark]{background:var(--stage);color:var(--stage-ink)}
section[data-cs-theme=dark] .muted{color:var(--stage-muted)}
figure{margin:0}

.top{position:fixed;inset:0 0 auto;z-index:50;display:flex;justify-content:space-between;align-items:center;
  padding:calc(18px + env(safe-area-inset-top,0px)) var(--gutter-r) 18px var(--gutter);color:#fff;mix-blend-mode:difference;pointer-events:none;transition:transform .5s var(--ease-out)}
.cs-on .top{transform:translateY(-110%)}
.top a{pointer-events:auto;text-decoration:none}
.top .name{font-weight:500;font-size:15px;letter-spacing:-.01em}
.top nav{display:flex;gap:28px;font-size:14px}
@media (max-width:560px){.top nav{gap:16px;font-size:13px}}

/* Titres de chapitre (même système que les autres études) */
.chap{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;margin-bottom:clamp(40px,6vw,88px)}
.chap-n{display:flex;align-items:center;gap:12px;color:var(--muted)}
[data-cs-theme=dark] .chap-n{color:var(--stage-muted)}
.chap-n i{display:block;width:32px;height:1.5px;background:currentColor}
.chap h2{font-weight:500;font-size:clamp(36px, 18px + 3.6vw, 88px);line-height:1;letter-spacing:-.035em;max-width:14ch}
.txt{display:grid;gap:1em;max-width:36em}
.lede{font-size:clamp(19px, 13px + .7vw, 26px);line-height:1.4;letter-spacing:-.012em}

/* Apparitions : titres et visuels, une fois */
.js .reveal-lines .line>span{transform:translateY(105%)}
.js .reveal-lines.in .line>span{transform:none;transition:transform .9s var(--ease)}
.js .reveal-lines.in .line:nth-child(2)>span{transition-delay:.08s}
.js .rv{opacity:0;transform:translateY(28px)}
.js .rv.in{opacity:1;transform:none;transition:opacity .9s var(--ease-out),transform 1.1s var(--ease)}
@media (prefers-reduced-motion:reduce){.js .rv{transform:none}.js .rv.in{transition:opacity .6s ease-out}
  .js .reveal-lines .line>span{transform:none!important;transition:none!important}}

/* ── Ouverture : même modèle que les autres études (scène sombre, image en fond qui s'efface vers le titre, métadonnées en pied) ── */
.hero{position:relative;height:100vh;height:100svh;min-height:600px;max-height:1300px;padding:0;background:var(--stage);color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0 0 0 clamp(0px,22vw,440px);margin:0;z-index:1}
.hero-ph{position:absolute;inset:0;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 44%);mask-image:linear-gradient(90deg,transparent 0%,#000 44%)}
.hero-ph img{display:block;width:100%;height:100%;object-fit:cover;object-position:60% 50%}
.hero-ph::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(11,12,13,.92) 0%,rgba(11,12,13,.6) 16%,rgba(11,12,13,0) 40%);pointer-events:none}
.hero-title{position:absolute;left:var(--gutter);top:46%;transform:translateY(-50%);max-width:min(40vw,600px);z-index:4}
.hero-title .kick{color:rgba(255,255,255,.56);margin:0 0 22px}
.hero-title h1{font-size:clamp(64px,8.6vw,150px);font-weight:500;letter-spacing:-.05em;line-height:.88;padding-bottom:.04em;margin:0 0 0 -.03em}
.hero-title .desc{margin:28px 0 0;font-size:clamp(17px,1.45vw,22px);line-height:1.38;color:rgba(255,255,255,.74);letter-spacing:-.01em;max-width:21em}
.hero-meta{position:absolute;left:var(--gutter);right:calc(var(--gutter-r) + 160px);bottom:calc(28px + env(safe-area-inset-bottom,0px));display:grid;grid-template-columns:1.3fr .5fr 1fr 1fr;gap:24px;margin:0;color:rgba(255,255,255,.86);z-index:4}
.hero-meta dt{color:rgba(255,255,255,.5);margin-bottom:4px}
.hero-meta dd{margin:0;font-size:15px;line-height:1.35}
.hero-cue{position:absolute;right:var(--gutter-r);bottom:calc(28px + env(safe-area-inset-bottom,0px));display:flex;align-items:center;gap:12px;color:rgba(255,255,255,.56);z-index:4}
.hero-cue i{position:relative;display:block;width:1px;height:28px;background:rgba(255,255,255,.18);overflow:hidden}
.hero-cue i::after{content:"";position:absolute;left:0;top:0;width:1px;height:12px;background:#fff;animation:cue 2.2s cubic-bezier(.65,0,.35,1) infinite}
@keyframes cue{0%{transform:translateY(-14px)}100%{transform:translateY(30px)}}
@media (max-width:860px){
  .hero{height:auto;min-height:100svh;max-height:none;display:flex;flex-direction:column;justify-content:flex-end;padding:0 0 calc(28px + env(safe-area-inset-bottom,0px))}
  .hero-bg{inset:0 0 auto 0;height:62svh;min-height:380px}
  .hero-ph{-webkit-mask-image:linear-gradient(180deg,#000 55%,transparent 100%);mask-image:linear-gradient(180deg,#000 55%,transparent 100%)}
  .hero-ph img{object-position:62% 50%}
  .hero-ph::after{background:linear-gradient(180deg,rgba(11,12,13,.45) 0%,rgba(11,12,13,0) 20%)}
  .hero-title{position:relative;left:auto;top:auto;transform:none;max-width:none;margin-top:52svh;padding:0 var(--gutter-r) 0 var(--gutter)}
  .hero-title .kick{margin-bottom:14px}
  .hero-title h1{font-size:clamp(56px,16vw,104px)}
  .hero-title .desc{margin-top:16px;font-size:16px}
  .hero-meta{position:relative;left:auto;right:auto;bottom:auto;margin-top:28px;padding:0 var(--gutter-r) 0 var(--gutter);grid-template-columns:1fr 1fr;gap:10px 16px}
  .hero-meta dd{font-size:14px}
  .hero-cue{display:none}
}
.js .hero-ph img{transform:scale(1.05);opacity:0}
.js .hero-ph.in img{transform:none;opacity:1;transition:transform 1.8s var(--ease),opacity 1s ease}
.js .hero-title>*,.js .hero-meta{opacity:0;transform:translateY(16px)}
.js .hero.in .hero-title>*,.js .hero.in .hero-meta{opacity:1;transform:none;transition:opacity .8s ease,transform 1s var(--ease)}
.js .hero.in .hero-title>:nth-child(2){transition-delay:.06s}.js .hero.in .hero-title>:nth-child(3){transition-delay:.14s}.js .hero.in .hero-meta{transition-delay:.24s}

/* ── 01 · Le film : écran 16/9 sans cadre, barre de lecture, chapitres en index ── */
#film{padding-top:calc(var(--sec) * .7)}
.player{margin:clamp(56px,7vw,112px) auto 0;max-width:max(320px, calc((100svh - 200px) * 16 / 9))}
.screen{position:relative;background:#000;box-shadow:0 0 0 1px var(--stage-line),0 40px 90px -40px rgba(0,0,0,.9)}
.screen video{width:100%;aspect-ratio:16/9;object-fit:cover;background:#000}
.bar{display:flex;align-items:center;gap:18px;margin-top:16px}
.pp{display:grid;place-items:center;flex:none;width:44px;height:44px;box-shadow:inset 0 0 0 1px var(--stage-line);transition:background-color .2s ease,color .2s ease,box-shadow .2s ease}
.pp svg{width:14px;height:14px}
.pp .i-pause{display:none}.pp[aria-pressed=true] .i-pause{display:inline}.pp[aria-pressed=true] .i-play{display:none}
.pp:active{transform:translateY(1px)}
@media (hover:hover) and (pointer:fine){.pp:hover{background:var(--stage-ink);color:var(--stage);box-shadow:inset 0 0 0 1px var(--stage-ink)}}
.prog{position:relative;flex:1;height:1px;background:var(--stage-line)}
.prog i{position:absolute;left:0;top:-.5px;height:2px;width:100%;background:var(--stage-ink);transform-origin:0 50%;transform:scaleX(0)}
.time{flex:none;color:var(--stage-muted);font-variant-numeric:tabular-nums}
.snd{flex:none;height:44px;padding:0 16px;box-shadow:inset 0 0 0 1px var(--stage-line);transition:background-color .2s ease,color .2s ease}
.snd[aria-pressed=true]{background:var(--stage-ink);color:var(--stage)}
@media (hover:hover) and (pointer:fine){.snd:hover{box-shadow:inset 0 0 0 1px var(--stage-ink)}}
@media (max-width:560px){.time{display:none}}
.chap-lab{margin:clamp(36px,4vw,56px) 0 0;color:var(--stage-muted)}
.chapters{list-style:none;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));margin-top:14px;border-top:1px solid var(--stage-line)}
.chapters button{display:grid;gap:6px;width:100%;height:100%;text-align:left;padding:16px 16px 18px 0;position:relative;color:var(--stage-muted);transition:color .25s ease}
.chapters button::before{content:"";position:absolute;left:0;right:16px;top:-1px;height:2px;background:var(--stage-ink);transform:scaleX(0);transform-origin:0 50%;transition:transform .5s var(--ease)}
.chapters b{font-weight:500;font-size:clamp(16px,12px + .45vw,20px);letter-spacing:-.015em;line-height:1.2;color:var(--stage-ink);opacity:.55;transition:opacity .25s ease}
.chapters button[aria-current=true] b{opacity:1}
.chapters button[aria-current=true]::before{transform:none}
@media (hover:hover) and (pointer:fine){.chapters button:hover b{opacity:1}}
.chapters button:focus-visible{outline-offset:-2px}
@media (max-width:860px){
  .chapters{grid-template-columns:minmax(0,1fr)}
  .chapters li{border-bottom:1px solid var(--stage-line)}
  .chapters button{grid-template-columns:64px minmax(0,1fr);align-items:baseline;padding:14px 0}
  .chapters button::before{display:none}
  .chapters button[aria-current=true]{box-shadow:inset 2px 0 0 var(--stage-ink);padding-left:12px}
}

/* ── 02 · La maquette : fenêtre de navigateur droite, la page défile au rythme de la lecture (desktop) ── */
#maquette{padding-bottom:0}
.maq{position:relative;padding:clamp(56px,7vw,112px) var(--gutter-r) var(--sec) var(--gutter)}
.win{background:#fff;box-shadow:0 0 0 1px var(--line),0 50px 100px -50px rgba(18,19,20,.55),0 18px 40px -24px rgba(18,19,20,.3);margin:0 auto;max-width:1280px}
.win-bar{display:flex;align-items:center;gap:7px;height:34px;padding:0 14px;background:#f4f4f2;border-bottom:1px solid var(--line)}
.win-bar i{width:9px;height:9px;border-radius:50%;background:rgba(18,19,20,.16)}
.win-bar span{margin-left:14px;color:var(--muted);font-size:12px}
.win-view{position:relative;overflow:hidden}
.win-view img{width:100%}
.maq-cap{margin:14px auto 0;max-width:1280px;color:var(--muted);font-variant-numeric:tabular-nums;visibility:hidden}
/* Mode défilé (ordinateur, mouvement autorisé) : la section s'allonge, l'écran reste au centre */
.scrub .maq{height:280vh;padding-top:0;padding-bottom:0}
.scrub .maq-stick{position:sticky;top:0;height:100vh;height:100svh;display:flex;flex-direction:column;justify-content:center}
.scrub .win{width:min(100%, calc((100svh - 160px) * 1.6 + 0px))}
.scrub .win-view{aspect-ratio:16/10}
.scrub .win-view img{will-change:transform}
.scrub .maq-cap{visibility:visible;width:min(100%, calc((100svh - 160px) * 1.6))}
/* Mouvement réduit sur ordinateur : la fenêtre se fait défiler à la main */
.native .win-view{aspect-ratio:16/10;overflow-y:auto;overscroll-behavior:contain}

/* ── Fin ── */
.end h2{font-weight:500;font-size:clamp(32px, 16px + 3vw, 72px);letter-spacing:-.035em;line-height:1;max-width:16ch}
.credits{display:grid;gap:12px 28px;margin-top:48px;border-top:1px solid var(--stage-line);padding-top:24px}
@media (min-width:900px){.credits{grid-template-columns:repeat(4,minmax(0,1fr))}}
.credits dt{color:var(--stage-muted)}
.credits dd{margin:0}