/* Amaeternum — one-screen product world. Launch: fleurs (crème, lumineux) · flamme (brun, chaleureux). lumiere (sombre) kept, off for now */
:root{
  --bronze:#B67145; --black:#0B0B0B;
  --serif:"Cormorant Garamond","Times New Roman",serif; --sans:"Jost","Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1); --gutter:clamp(16px,3.4vw,44px);
  /* flamme (default): warm natural brown, walnut and candlelight */
  --bg:#3B2A1E; --glow:rgba(255,172,96,.26); --ink:#F2E7D7; --muted:#C2AD96; --accent:#D9A06E; --line:rgba(242,231,215,.17);
  --card:rgba(44,31,22,.93); --card-ink:#F2E7D7; --wm:.085; --btn-bg:#D9A06E; --btn-ink:#2A1C13;
}
html[data-version="fleurs"]{--bg:#F7F1E6;--glow:rgba(255,253,247,.85);--ink:#2A211A;--muted:#7A6B5C;--accent:#A8683F;--line:rgba(42,33,26,.14);--card:rgba(255,252,246,.93);--card-ink:#2A211A;--wm:.065;--btn-bg:#2A211A;--btn-ink:#F7F1E6}
html[data-version="lumiere"]{--bg:#0B0B0B;--glow:rgba(214,140,82,.20);--ink:#EFE6DA;--muted:#A3968A;--accent:#D08A5C;--line:rgba(239,230,218,.16);--card:rgba(22,19,17,.90);--card-ink:#EFE6DA;--wm:.10;--btn-bg:#B67145;--btn-ink:#0B0B0B}

*,*::before,*::after{box-sizing:border-box}
html,body{height:100%;margin:0;overflow:hidden;overscroll-behavior:none}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-weight:300;font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;transition:background-color 1.1s var(--ease),color 1.1s var(--ease)}
a{color:inherit}
h1,h2,h3{font-family:var(--serif);font-weight:300;margin:0;line-height:1.08}
h2{font-size:clamp(34px,3.6vw,54px)}
h3{font-size:22px;font-weight:400;margin-bottom:.35em}
p{margin:0 0 1em}
.skip{position:fixed;left:-999px;top:8px;z-index:200;background:var(--btn-bg);color:var(--btn-ink);padding:8px 14px}
.skip:focus{left:8px}
:focus-visible{outline:1px solid var(--accent);outline-offset:4px}
.caps,.kicker,.eyebrow{font-size:11.5px;letter-spacing:.3em;text-transform:uppercase;font-weight:400}
.rule{display:block;width:56px;height:1px;background:var(--accent);margin:26px 0}
.todo{color:#9a6b2e;font-size:13px;letter-spacing:.03em;background:rgba(182,113,69,.10);outline:1px dashed rgba(182,113,69,.7);padding:2px 6px;display:inline-block}

/* ---------- world ---------- */
.world{position:fixed;inset:0;overflow:hidden;touch-action:pan-y}
.glow{position:absolute;inset:0;background:radial-gradient(ellipse 42% 46% at 50% 52%,var(--glow),transparent 70%);transition:background 1.1s var(--ease)}
.wordmark{position:absolute;left:50%;top:47%;width:min(92vw,1500px);aspect-ratio:1713/228;transform:translate(-50%,-50%);background:var(--ink);opacity:var(--wm);
  -webkit-mask:url(../img/logo/logotype-seul_noir.svg) center/contain no-repeat;mask:url(../img/logo/logotype-seul_noir.svg) center/contain no-repeat;transition:opacity 1.1s,background-color 1.1s}
.stage{container-type:inline-size;position:absolute;left:50%;top:52%;width:min(100svh - 70px,70vw);aspect-ratio:1;transform:translate(-50%,-50%);transition:transform 1.1s var(--ease),left 1.1s var(--ease),width 1.1s var(--ease)}
#canvas{width:100%;height:100%;display:block;cursor:grab}
#canvas.dragging{cursor:grabbing}

/* card open: the candle steps aside (desktop) or rises (mobile) */
html.card-open .stage{left:28%;width:min(100svh - 90px,48vw)}
html.card-open.wide .stage{left:16%;width:min(100svh - 140px,30vw)}
html.card-open .intro,html.card-open .hint{opacity:0;pointer-events:none}
html.card-open .dots .dot span{opacity:0}

/* ---------- dots on the object ---------- */
.dot{position:absolute;left:calc(var(--x)*100%);top:calc(var(--y)*100%);transform:translate(-50%,-50%);background:none;border:0;padding:12px;cursor:pointer;color:var(--ink);font:inherit;transition:opacity .6s var(--ease)}
.dot i{display:block;width:12px;height:12px;border-radius:50%;border:1px solid var(--accent);background:color-mix(in srgb,var(--bg) 70%,transparent);position:relative}
.dot i::after{content:"";position:absolute;inset:-1px;border-radius:50%;border:1px solid var(--accent);animation:ping 2.8s var(--ease) infinite}
@keyframes ping{0%{transform:scale(1);opacity:.9}100%{transform:scale(3);opacity:0}}
.dot span{position:absolute;top:50%;white-space:nowrap;font-size:10.5px;letter-spacing:.26em;text-transform:uppercase;transform:translateY(-50%);transition:opacity .5s,color .3s;display:flex;align-items:center;gap:10px}
.dot span::before{content:"";width:var(--len,7cqw);height:1px;background:var(--accent);order:0}
.dot.r span{left:28px}
.dot.l span{right:28px;flex-direction:row-reverse}
.dot:hover span,.dot:focus-visible span{color:var(--accent)}
.dot:hover i{background:var(--accent)}
html.spinning .dot,html.exploding .dot{opacity:0;pointer-events:none}
html.card-open .dot{opacity:.0;pointer-events:none}

/* ---------- versions selector (under the base) ---------- */
.versions{position:absolute;left:50%;top:84%;transform:translateX(-50%);display:flex;gap:4px;padding:4px;border:1px solid var(--line);border-radius:999px;background:color-mix(in srgb,var(--bg) 65%,transparent);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);transition:opacity .6s}
.versions button{font:inherit;font-size:10.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--muted);background:none;border:0;border-radius:999px;padding:9px 16px 9px 18px;cursor:pointer;transition:background-color .6s var(--ease),color .6s var(--ease)}
.versions button[aria-checked="true"]{background:var(--btn-bg);color:var(--btn-ink)}
.versions button:hover{color:var(--ink)}
.versions button[aria-checked="true"]:hover{color:var(--btn-ink)}
.vcaption{position:absolute;left:50%;top:calc(84% + 52px);transform:translateX(-50%);width:max-content;max-width:90vw;text-align:center;font-family:var(--serif);font-style:italic;font-size:19px;color:var(--muted);margin:0;transition:opacity .5s}
html.card-open .versions,html.card-open .vcaption{opacity:0;pointer-events:none}

/* ---------- intro + hint ---------- */
.intro{position:absolute;left:var(--gutter);top:50%;transform:translateY(-50%);max-width:min(30vw,400px);transition:opacity .7s var(--ease)}
.intro h1{font-size:clamp(40px,4.6vw,76px)}
.intro .caps{margin-top:26px;line-height:2;color:var(--muted);max-width:28ch}
.hint{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);display:flex;align-items:center;gap:14px;margin:0;font-size:10px;letter-spacing:.26em;text-transform:uppercase;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:9px 18px;white-space:nowrap;transition:opacity .7s}
.hint i{width:1px;height:12px;background:var(--line)}
.h-touch{display:none}
@media (hover:none){.h-desk{display:none}.h-touch{display:inline}}

/* ---------- top chrome ---------- */
.top{position:fixed;inset:0 0 auto 0;z-index:60;display:flex;align-items:center;justify-content:space-between;padding:18px var(--gutter);pointer-events:none}
.top > *{pointer-events:auto}
.round{width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:color-mix(in srgb,var(--bg) 70%,transparent);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;cursor:pointer;color:var(--ink)}
.round span{display:block;width:16px;height:1px;background:currentColor;transition:transform .5s var(--ease)}
.round[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}
.round[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}
.logo{position:absolute;left:50%;top:16px;transform:translateX(-50%);width:clamp(190px,19vw,270px);aspect-ratio:2387/428;background:var(--ink);transition:background-color 1.1s;
  -webkit-mask:url(../img/logo/horizontal_noir.svg) center/contain no-repeat;mask:url(../img/logo/horizontal_noir.svg) center/contain no-repeat}
html[data-version="lumiere"] .logo{background:var(--bronze)}
.pill{font-size:11px;letter-spacing:.22em;text-transform:uppercase;text-decoration:none;color:var(--btn-ink);background:var(--btn-bg);border-radius:999px;padding:13px 20px;transition:background-color 1.1s,color 1.1s,opacity .3s}
.pill:hover{opacity:.85}
@media (max-width:640px){.hide-s{display:none}.logo{width:54px;top:22px;aspect-ratio:925/517;-webkit-mask-image:url(../img/logo/monogramme_noir.svg);mask-image:url(../img/logo/monogramme_noir.svg)}.pill{padding:12px 15px}}

.menu{position:fixed;inset:0;z-index:55;background:color-mix(in srgb,var(--bg) 94%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);display:flex;flex-direction:column;justify-content:center;padding:90px var(--gutter) 40px}
.menu[hidden]{display:none}
.menu ol{list-style:none;margin:0;padding:0;counter-reset:m}
.menu li{counter-increment:m;border-top:1px solid var(--line)}
.menu li:last-child{border-bottom:1px solid var(--line)}
.menu a{display:flex;align-items:baseline;gap:22px;padding:12px 0;font-family:var(--serif);font-size:clamp(28px,4vw,46px);text-decoration:none;transition:color .3s,padding .5s var(--ease)}
.menu a::before{content:counter(m,decimal-leading-zero);font-family:var(--sans);font-size:11px;letter-spacing:.2em;color:var(--accent)}
.menu a:hover{color:var(--accent);padding-left:10px}
.menu-sig{margin-top:30px;font-size:11px;letter-spacing:.32em;text-transform:uppercase;color:var(--muted)}

/* ---------- cards ---------- */
.cards{position:fixed;inset:0;z-index:40;pointer-events:none}
.card{position:absolute;top:88px;bottom:22px;right:var(--gutter);width:min(560px,46vw);background:var(--card);color:var(--card-ink);border:1px solid var(--line);border-radius:22px;
  backdrop-filter:blur(18px) saturate(1.1);-webkit-backdrop-filter:blur(18px) saturate(1.1);box-shadow:0 30px 80px -30px rgba(0,0,0,.35);
  display:flex;flex-direction:column;overflow:hidden;opacity:0;visibility:hidden;transform-origin:var(--ox,50%) var(--oy,50%);transform:scale(.18);
  transition:transform .75s var(--ease),opacity .45s var(--ease),visibility 0s linear .75s,background-color 1.1s,color 1.1s}
.card.open{opacity:1;visibility:visible;transform:none;pointer-events:auto;transition:transform .85s var(--ease),opacity .5s var(--ease),visibility 0s,background-color 1.1s,color 1.1s}
.card-wide{width:min(900px,66vw)}
.card-dark{--card:rgba(17,14,12,.93);--card-ink:#EFE6DA;--line:rgba(239,230,218,.16);--accent:#D08A5C;--muted:#A3968A}
.card-bar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 26px;border-bottom:1px solid var(--line);flex:none}
.kicker{color:var(--accent)}
.close{font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:9px 14px;white-space:nowrap}
.close:hover{border-color:var(--accent);color:var(--accent)}
.card-body{padding:34px 34px 40px;overflow-y:auto;overscroll-behavior:contain;flex:1}
.card-body p{max-width:46ch}
.card-body a:not(.btn):not(.tile){color:var(--accent)}
.eyebrow{color:var(--muted);margin:34px 0 14px}

.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-bottom:18px}
.tile{position:relative;display:flex;flex-direction:column;gap:6px;padding:22px 18px;background:var(--card);text-decoration:none;overflow:hidden;transition:background .5s}
.tile::before{content:"";position:absolute;right:16px;top:18px;width:30px;height:30px;border-radius:50%;border:1px solid var(--accent);opacity:0}
.tile:hover::before{animation:ripple 1.8s var(--ease) infinite}
@keyframes ripple{0%{opacity:.9;transform:scale(.4)}100%{opacity:0;transform:scale(2.6)}}
.tile-n{font-family:var(--serif);color:var(--accent);font-size:16px}
.tile-t{font-family:var(--serif);font-size:28px;margin-top:14px}
.tile-d{font-size:13px;color:var(--muted);line-height:1.4}
@media (max-width:520px){.tiles{grid-template-columns:1fr}}

.three{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:10px}
.three > div{border-top:1px solid var(--line);padding-top:20px}
.three p,.steps-list p{font-size:15.5px}
.steps-list{list-style:none;padding:0;margin:40px 0 34px;display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.steps-list span{display:block;font-family:var(--serif);font-size:44px;color:var(--accent);line-height:1;margin-bottom:12px}
@media (max-width:860px){.three,.steps-list{grid-template-columns:1fr}}

.btn{display:inline-flex;font:inherit;font-size:11px;letter-spacing:.22em;text-transform:uppercase;text-decoration:none;color:var(--btn-ink);background:var(--btn-bg);border:0;border-radius:999px;padding:15px 26px;cursor:pointer;transition:opacity .3s}
.btn:hover{opacity:.85}
details{border-top:1px solid var(--line);padding:16px 0}
details:last-of-type{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none;font-family:var(--serif);font-size:22px;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"";width:10px;height:10px;flex:none;margin-top:9px;border-right:1px solid var(--accent);border-bottom:1px solid var(--accent);transform:rotate(45deg);transition:transform .4s var(--ease)}
details[open] summary::after{transform:rotate(225deg)}
details p{margin:10px 0 0}

.form{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px;margin-top:10px}
.field{grid-column:1/-1;display:flex;flex-direction:column;gap:6px}
.field.half{grid-column:span 1}
label{font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}
.opt{letter-spacing:.04em;text-transform:none}
input,select,textarea{font:inherit;font-size:16.5px;color:inherit;background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:8px 0}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}
select option{color:#0B0B0B}
textarea{resize:vertical}
.form .btn{grid-column:1/-1;justify-self:start;margin-top:6px}
.form-status{grid-column:1/-1;min-height:1.5em;font-size:14.5px;margin:0}
.hp{position:absolute;left:-9999px}
.foot-meta{margin-top:30px;font-size:12.5px;color:var(--muted)}

/* letter-by-letter reveal (the message arriving) */
.reveal .w{display:inline-block;white-space:nowrap}
.reveal .ch{display:inline-block;opacity:0;transform:translateY(.3em);filter:blur(7px);transition:opacity 1.1s var(--ease),transform 1.1s var(--ease),filter 1.1s var(--ease);transition-delay:calc(var(--i)*30ms + var(--d,0ms))}
.is-in .reveal .ch,.reveal.is-in .ch{opacity:1;transform:none;filter:none}

/* ---------- small screens ---------- */
@media (max-width:820px){
  .stage{top:calc(50% - 6svh);width:min(128vw,74svh)}
  .intro{left:0;right:0;top:auto;bottom:calc(16px + 44px);transform:none;max-width:none;text-align:center;padding:0 var(--gutter)}
  .intro h1{font-size:clamp(30px,8vw,44px)}
  .intro .caps{display:none}
  .versions{top:auto;bottom:-6px}
  .vcaption{display:none}
  .hint{display:none}
  .dot span{font-size:0;letter-spacing:.16em;gap:7px}
  .dot span::after{content:attr(data-short);font-size:8.5px}
  .dot span::before{width:var(--len,4cqw)}
  .dot[data-card=medaillon]{--len:19cqw!important}
  .dot[data-card=compartiment]{--len:3cqw!important}
  .card,.card-wide{left:8px;right:8px;width:auto;top:auto;bottom:8px;height:76svh;border-radius:20px}
  html.card-open .stage,html.card-open.wide .stage{left:50%;top:16svh;width:min(54vw,28svh)}
  html.card-open .wordmark{opacity:0}
  .card-body{padding:24px 22px 34px}
}
@media (max-width:820px) and (min-height:700px){.intro{bottom:auto;top:calc(44% + min(64vw,37svh) + 44px)}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important}
  .reveal .ch{opacity:1!important;transform:none!important;filter:none!important;transition:none!important}
  .card,.card.open{transform:none!important;transition:opacity .2s,visibility 0s!important}
  .stage{transition:none}
}

.fig{margin:22px 0 26px}
.fig img{width:100%;border-radius:14px;display:block}
.fig figcaption{font-size:12.5px;color:var(--muted);margin-top:8px}
.card-body h3{margin-top:26px}
.ticks,.motifs{list-style:none;padding:0;margin:12px 0 18px}
.ticks li{position:relative;padding:8px 0 8px 26px;border-top:1px solid var(--line);font-size:16px}
.ticks li::before{content:"";position:absolute;left:2px;top:17px;width:10px;height:5px;border-left:1px solid var(--accent);border-bottom:1px solid var(--accent);transform:rotate(-45deg)}
.motifs{display:grid;grid-template-columns:1fr 1fr;gap:0 22px}
.motifs li{padding:10px 0;border-top:1px solid var(--line);font-size:14.5px;color:var(--muted);line-height:1.45}
.motifs b{display:block;font-family:var(--serif);font-weight:400;font-size:20px;color:var(--card-ink)}
@media (max-width:520px){.motifs{grid-template-columns:1fr}}

html[data-version="fleurs"] .dot[data-card="flamme"]{opacity:0;pointer-events:none}

/* gesture loop, HumaLux player, explainer */
.geste{margin:22px 0 6px;border-radius:16px;overflow:hidden;aspect-ratio:3/4;max-width:300px;background:#000}
.geste video{width:100%;height:100%;object-fit:cover;display:block}
.tile{font:inherit;color:inherit;text-align:left;border:0;cursor:pointer}
.tile-go{margin-top:12px;font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent)}
.tile.soon{cursor:default;opacity:.55}
.demo-note{font-size:12.5px;color:var(--muted);margin-top:10px}
.player{border:0;padding:0;background:transparent;color:#EFE6DA;max-width:none;max-height:none;width:100%;height:100%;display:none;flex-direction:column;align-items:center;justify-content:center;gap:14px}
.player[open]{display:flex}
.player::backdrop{background:rgba(8,7,6,.86);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.player-bar{display:flex;gap:16px;align-items:center;justify-content:space-between;width:min(92vw,520px)}
.player-tabs{display:flex;gap:4px;border:1px solid rgba(239,230,218,.2);border-radius:999px;padding:4px}
.player-tabs button{font:inherit;font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:#A3968A;background:none;border:0;border-radius:999px;padding:9px 13px;cursor:pointer}
.player-tabs button[aria-selected="true"]{background:#B67145;color:#0B0B0B}
.player .close{color:#EFE6DA;border-color:rgba(239,230,218,.25);background:none;font:inherit;font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;border:1px solid rgba(239,230,218,.25);border-radius:999px;padding:9px 14px;cursor:pointer}
.player-phone{position:relative;height:min(72svh,700px);aspect-ratio:3/4;border-radius:28px;overflow:hidden;background:#000;box-shadow:0 0 0 8px #151210,0 0 0 9px rgba(239,230,218,.12),0 40px 90px -30px #000}
.player-phone video{width:100%;height:100%;object-fit:cover;display:block}
.player-soon{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--serif);font-size:24px;color:#A3968A;margin:0}
.player-meta{font-size:12px;letter-spacing:.06em;color:#A3968A;margin:0}
@media (max-width:520px){.player-tabs button{padding:8px 9px;letter-spacing:.12em}.player-phone{height:auto;width:88vw}}
.explainer{border-radius:14px;overflow:hidden;aspect-ratio:16/9;background:#000;margin-bottom:22px}
.explainer video{width:100%;height:100%;display:block}
.player [hidden]{display:none!important}


/* ---------- 2026-10-20: AMAETERNUM, two launch versions, quick access ---------- */
html[data-version="flamme"] .logo{background:var(--accent)}
html.led-off .led-only{display:none!important}
html:not(.led-off) .no-led{display:none!important}
.top{gap:14px}
.top-links{margin-left:auto;display:flex;gap:26px;align-items:center}
.top-links a{font-size:11px;letter-spacing:.22em;text-transform:uppercase;text-decoration:none;color:var(--ink);opacity:.85;transition:opacity .3s,color .3s}
.top-links a:hover{opacity:1;color:var(--accent)}
@media (max-width:1100px){.top-links a[href="#/comment"]{display:none}}
@media (max-width:899px){.top-links{display:none}}
.howto{display:inline-flex;align-items:center;gap:12px;margin-top:30px;font-size:11px;letter-spacing:.24em;text-transform:uppercase;text-decoration:none;color:var(--ink)}
.howto i{position:relative;width:38px;height:38px;border-radius:50%;border:1px solid var(--accent);flex:none;transition:background-color .4s}
.howto i::after{content:"";position:absolute;left:15px;top:12px;border-style:solid;border-width:7px 0 7px 11px;border-color:transparent transparent transparent var(--accent)}
.howto:hover i{background:color-mix(in srgb,var(--accent) 18%,transparent)}
.howto:hover{color:var(--accent)}
.howto-card{display:flex;margin-top:30px;padding-top:22px;border-top:1px solid var(--line);color:var(--card-ink)}
.link-arrow{display:inline-block;margin-top:6px;font-size:11px;letter-spacing:.22em;text-transform:uppercase;text-decoration:none;border-bottom:1px solid var(--accent);padding-bottom:3px}
@media (max-width:820px){.intro .howto{margin-top:12px}.intro .howto i{width:30px;height:30px}.intro .howto i::after{left:11px;top:8px;border-width:6px 0 6px 9px}}