/* Mockup web v2 de BRAM Acoustics · direcció d'art de Sol (wiki/raw/chatgpt/bram/2026-10-11-proposta-estetica-web.md)
   Estàtic, només per revisar; la implementació real anirà a src/app/globals.css. */
:root{
  --bg-dark:#151619; --bg-paper:#F2EFE8; --bg-stone:#E5E0D7;
  --text-dark:#161719; --text-muted:#555552; --text-light:#F5F2EC; --text-light-muted:#C8C9C7;
  --accent-earth:#71523B; --accent-light:#D9C4AD; --line:#BDB8AE; --line-dark:#3A3B3F;
  --serif:"Instrument Serif",Georgia,serif; --sans:"IBM Plex Sans",system-ui,sans-serif; --mono:"IBM Plex Mono",ui-monospace,monospace;
  --pad:60px; --sec:160px; --max:1320px;
}
@media (max-width:1100px){:root{--pad:32px;--sec:120px}}
@media (max-width:640px){:root{--pad:20px;--sec:80px}}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg-paper);color:var(--text-dark);font:400 17px/1.6 var(--sans);overflow-x:hidden}
@media (max-width:640px){body{font-size:16px}}
img,video{display:block;max-width:100%;height:auto}
a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.wrap>*,.grid>*{min-width:0}

/* tipografia */
.h1{font:400 112px/.92 var(--serif);letter-spacing:-.035em}
.h1 em,.it{font-style:italic}
.h2{font:400 68px/1.04 var(--serif);letter-spacing:-.025em}
.h3{font:400 32px/1.15 var(--serif);letter-spacing:-.015em}
.sub{font-size:24px;line-height:1.4;letter-spacing:-.01em}
.tech{font-size:15px;line-height:1.5}
.cap{font-size:12px;line-height:1.5;color:var(--text-muted)}
.tag{font:500 11px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase}
@media (max-width:640px){.h1{font-size:68px}.h2{font-size:42px}.h3{font-size:26px}.sub{font-size:19px}.tech{font-size:14px}}
.measure{max-width:620px}

/* superfícies */
.dark{background:var(--bg-dark);color:var(--text-light)}
.dark .cap,.dark .muted{color:var(--text-light-muted)}
.stone{background:var(--bg-stone)}
.muted{color:var(--text-muted)}
section{padding:var(--sec) 0}

/* capçalera */
.hdr{position:sticky;top:0;z-index:20;height:80px;background:var(--bg-paper);border-bottom:1px solid var(--line)}
.hdr .wrap{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center}
.hdr .logo img{height:38px;width:auto}
.hdr nav{display:flex;gap:36px}
.hdr nav a,.lang a{font:500 14px/1.3 var(--sans);text-decoration:none;padding:6px 0;border-bottom:1px solid transparent}
.hdr nav a[aria-current]{border-bottom-color:currentColor}
.hdr nav a:hover{border-bottom-color:var(--line)}
.lang{justify-self:end;display:flex;gap:16px}
.lang a[aria-current]{border-bottom-color:currentColor}
.menu-btn{display:none;justify-self:end;font:500 14px var(--sans);background:none;border:1px solid var(--text-dark);border-radius:2px;height:44px;padding:0 16px}
@media (max-width:900px){.hdr{height:68px}.hdr .wrap{grid-template-columns:1fr auto}.hdr nav,.lang{display:none}.menu-btn{display:block}.hdr .logo img{height:30px}}

/* botons */
.btn{display:inline-flex;align-items:center;gap:12px;min-height:48px;padding:0 24px;border-radius:2px;font:500 14px/1.25 var(--sans);letter-spacing:.01em;text-decoration:none;transition:background .15s,color .15s,border-color .15s;border:1px solid transparent}
.btn-on-dark{background:var(--text-light);color:var(--bg-dark)}
.btn-on-dark:hover{background:transparent;color:var(--text-light);border-color:var(--text-light)}
.btn-on-light{background:var(--bg-dark);color:var(--text-light)}
.btn-on-light:hover{background:transparent;color:var(--bg-dark);border-color:var(--bg-dark)}
.lnk{font:500 14px/1.3 var(--sans);text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px}
.lnk::after{content:" →"}
.paper .lnk,.stone .lnk{color:var(--accent-earth)}
.btn:focus-visible,.lnk:focus-visible,a:focus-visible{outline:2px solid currentColor;outline-offset:4px}
@media (max-width:640px){.btn{width:100%;justify-content:center;min-height:52px}}

/* hero */
.hero{position:relative;padding:0;min-height:clamp(720px,calc(100vh - 80px),940px);display:flex;align-items:center;overflow:hidden}
.hero picture,.hero .bgimg{position:absolute;inset:0}
.hero .bgimg img{width:100%;height:100%;object-fit:cover;object-position:70% 50%}
.hero .copy{position:relative;z-index:1;width:100%}
.hero .copy .tag{color:var(--accent-light);margin-bottom:28px}
.hero .copy .sub{margin:28px 0 40px;max-width:430px;color:var(--text-light-muted)}
.hero .prov{position:absolute;left:var(--pad);bottom:28px;z-index:1}
@media (max-width:900px){
  .hero{flex-direction:column;align-items:stretch;min-height:0;padding:48px 0 0}
  .hero .copy{order:0}
  .hero .bgimg,.hero picture{position:relative;inset:auto;order:1}
  .hero .bgimg{margin-top:32px}
  .hero .bgimg img{height:auto;aspect-ratio:4/5;object-position:center}
  .hero .prov{position:static;order:2;padding:12px var(--pad) 28px}
  .hero .copy .sub{margin:20px 0 28px}
}

/* graelles */
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.bleed{width:100%}
.figcap{display:flex;gap:16px;align-items:baseline;margin-top:12px}
.spec3{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--text-dark)}
.spec3>div{padding:28px 24px 0 0}
.spec3 .val{font:400 72px/1 var(--serif);letter-spacing:-.03em}
.spec3 .val small{font-size:.4em;letter-spacing:0}
.spec3 .lab{margin-top:12px}
@media (max-width:640px){.spec3{grid-template-columns:1fr}.spec3>div{padding:20px 0;border-bottom:1px solid var(--line)}.spec3 .val{font-size:56px}}
.rows{border-top:1px solid var(--text-dark)}
.rows>div{display:grid;grid-template-columns:220px 1fr;gap:24px;padding:18px 0;border-bottom:1px solid var(--line)}
@media (max-width:640px){.rows>div{grid-template-columns:1fr;gap:4px}}
.dark .rows{border-top-color:var(--text-light)}.dark .rows>div{border-bottom-color:var(--line-dark)}

/* peu */
.ftr{background:var(--bg-dark);color:var(--text-light);padding:96px 0 48px}
.ftr .logo img{height:48px;width:auto}
.ftr .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px;margin-top:56px}
.ftr a{text-decoration:none;display:block;padding:4px 0;font-size:15px}
.ftr a:hover{text-decoration:underline}
.ftr .motto{font:400 30px/1.2 var(--serif);font-style:italic}
.ftr .base{margin-top:80px;padding-top:24px;border-top:1px solid var(--line-dark);display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
@media (max-width:640px){.ftr{padding:64px 0 32px}.ftr .cols{grid-template-columns:1fr 1fr}.ftr .cols>div:first-child{grid-column:1/-1}}

/* aparició suau */
@media (prefers-reduced-motion:no-preference){
  .rise{opacity:0;transform:translateY(12px);transition:opacity .32s ease,transform .32s ease}
  .rise.in{opacity:1;transform:none}
}
.mock-note{position:fixed;right:12px;bottom:12px;z-index:50;background:#000;color:#fff;font:500 11px/1.4 var(--mono);padding:8px 10px;border-radius:2px;letter-spacing:.06em}

/* escenes guiades per l'scroll (scroll.js) */
.scene{position:relative;padding:0}
.scene .stage{position:sticky;top:80px;height:calc(100vh - 80px);overflow:hidden}
.scene canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.scene .beat{position:absolute;opacity:0;transform:translateY(12px);transition:opacity .14s ease,transform .14s ease;pointer-events:none;max-width:420px}
.scene .beat.on{transition-duration:.3s;transition-delay:.12s}
.scene .beat.on{opacity:1;transform:none}
.scene .beat .val{font:400 64px/1 var(--serif);letter-spacing:-.03em}
.scene .beat .val small{font-size:.42em}
.scene .beat .rule{display:block;width:48px;height:1px;background:currentColor;margin:14px 0}
.scene .bar{position:absolute;left:var(--pad);right:var(--pad);bottom:24px;height:1px;background:var(--line-dark)}
.scene .bar::after{content:"";position:absolute;left:0;top:0;height:1px;width:calc(var(--p,0)*100%);background:currentColor}
.scene.reduced .stage{position:relative;top:0}
@media (max-width:900px){.scene .stage{top:68px;height:calc(100svh - 68px)}.scene .beat{max-width:none;left:var(--pad)!important;right:var(--pad)!important}.scene .beat .val{font-size:48px}}
/* ombra de lectura a les escenes fosques on el text cau sobre la imatge (ROT, MAC) */
.scene .stage>*:not(canvas){z-index:2}
.scene.scrim .stage::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(90deg,rgba(21,22,25,.82) 0,rgba(21,22,25,.55) 32%,rgba(21,22,25,0) 58%),
             linear-gradient(180deg,rgba(21,22,25,.6) 0,rgba(21,22,25,0) 30%)}
@media (max-width:900px){.scene.scrim .stage::after{background:linear-gradient(180deg,rgba(21,22,25,.75) 0,rgba(21,22,25,0) 45%,rgba(21,22,25,0) 70%,rgba(21,22,25,.75) 100%)}}
html{scroll-behavior:smooth}[id]{scroll-margin-top:80px}
@media (max-width:900px){.pair .beat{margin-left:0!important;width:auto!important;text-align:center}.pair .beat.mid{top:auto;bottom:45%}.pair .beat.cta{top:auto;bottom:88px}}
/* [Sol r3] H06 mòbil: zones fixes (390×844): títol 96–210 · parella 235–425 · text 445–565 · botó 585–637 · peu 750–790 */
.m-only{display:none}
@media (max-width:900px){
  .d-only{display:none!important}
  .m-only{display:block}
  .pair .stage canvas{top:167px!important;height:190px!important;bottom:auto}
  .pair .ttl{top:28px!important}
  .pair .beat.pm{left:var(--pad)!important;right:var(--pad)!important;top:377px;bottom:auto;margin:0!important;width:auto!important;text-align:left;pointer-events:auto}
  .pair .beat.pm .btn{width:100%}
  .pair .pcap{top:682px;bottom:auto}
}
/* [Sol r4] A: l'anotació del hero no surt en mòbil (ja s'explica a H02) */
@media (max-width:767px){.scene .beat.hero-note{display:none!important}}
/* [Sol r4] B: per sota de 360 px, H02/P03 en flux vertical natural (sense fixar):
   títol i paràgraf → imatge de 260 px sense text a sobre → una anotació cada vegada.
   H01: la zona animada va sota el text i la crida. */
@media (max-width:359px){
  .scene.ex{height:auto!important}
  .scene.ex .stage{position:relative;top:0;height:auto;overflow:visible;padding:28px 0 32px}
  .scene.ex .ttl{position:static}
  .scene.ex canvas{position:relative!important;height:260px!important;margin:20px 0}
  .scene.ex .beat{position:static!important;display:none;max-width:none;padding:0 var(--pad);opacity:1;transform:none}
  .scene.ex .beat.on{display:block}
  .scene.ex .foot,.scene.ex .bar{position:static;display:block;padding:12px var(--pad) 0}
  .hero-copy .h1{font-size:54px}
  .hero-copy .sub{font-size:16px}
  .scene.scrim[aria-labelledby="h-hero"] canvas{top:52%!important;height:48%!important}
}