/* Shared case-study layout. Every page sets its own tokens (colors, fonts) in a <style> block;
   this file only uses those tokens, so each project keeps its own identity. */
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:400 16.5px/1.65 var(--body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video{max-width:100%;display:block}
a{color:inherit}
button{font:inherit;color:inherit}
::selection{background:var(--accent);color:var(--on-accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-999px;top:8px;background:var(--text);color:var(--bg);padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:16px}
.wrap{max-width:1240px;margin:0 auto;padding-inline:clamp(16px,4vw,56px)}
.mono{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase}
.kicker{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-2)}
h1,h2,h3{font-family:var(--display);font-weight:var(--display-weight,800);letter-spacing:var(--display-tracking,-.035em);margin:0;text-wrap:balance;line-height:1.02}
h1 em,h2 em{font-style:var(--em-style,italic);color:var(--accent)}
h2{font-size:clamp(32px,4.6vw,58px)}
p{margin:0}
.lede{color:var(--muted);font-size:clamp(16.5px,1.5vw,19px);max-width:60ch}

/* top bar */
.c-top{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:calc(env(safe-area-inset-top,0px) + 12px) clamp(16px,4vw,56px) 12px;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.c-back{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase}
.c-back .ar{transition:transform .25s}
.c-back:hover .ar{transform:translateX(-4px)}
.c-idx{color:var(--muted);display:flex;gap:6px;align-items:center}
.c-idx a{width:26px;height:4px;border-radius:2px;background:var(--line-strong);display:block}
.c-idx a[aria-current]{background:var(--accent)}
.c-idx a:hover{background:var(--muted)}
.c-hire{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;text-decoration:none;padding:9px 14px;border-radius:999px;background:var(--text);color:var(--bg);white-space:nowrap}
.c-hire:hover{background:var(--accent);color:var(--on-accent)}

/* hero */
.c-hero{padding-block:clamp(110px,14vw,160px) clamp(32px,4vw,48px)}
.c-hero-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:clamp(28px,5vw,80px);align-items:end}
.c-hero h1{font-size:clamp(52px,9vw,128px);margin:18px 0 18px}
.c-hero .tagline{text-wrap:balance;font-family:var(--display);font-size:clamp(22px,2.4vw,30px);letter-spacing:-.02em;line-height:1.2;margin-bottom:18px;max-width:28ch}
.c-hero .tagline em{color:var(--accent);font-style:var(--em-style,italic)}
.concept{display:inline-flex;gap:8px;align-items:center;margin-top:22px;padding:7px 12px;border-radius:999px;border:1px dashed var(--line-strong);color:var(--muted);font-size:13px}
.concept::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent-2)}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line-strong);margin:0}
.facts div{padding:14px 0;border-bottom:1px solid var(--line);min-width:0}
.facts div:nth-child(odd){padding-right:14px}
.facts dt{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.facts dd{margin:0;font-size:15px;font-weight:500;font-variant-numeric:tabular-nums}

/* film */
.c-film{padding-block:8px clamp(64px,8vw,110px)}
.player{border-radius:var(--radius,18px);overflow:hidden;border:1px solid var(--line-strong);background:var(--surface);box-shadow:var(--shadow,0 40px 100px -40px rgba(0,0,0,.6))}
.player .screen{position:relative;background:#000;cursor:pointer;aspect-ratio:16/9;max-width:100%}
.player .screen video{width:100%;height:100%;object-fit:contain}
.player .bigplay{position:absolute;inset:0;margin:auto;width:84px;height:84px;border-radius:50%;background:color-mix(in srgb,var(--accent) 88%,transparent);display:grid;place-items:center;transition:opacity .3s,transform .3s;pointer-events:none;box-shadow:0 10px 40px -8px rgba(0,0,0,.5)}
.player .bigplay svg{width:28px;height:28px;fill:var(--on-accent);margin-left:4px}
.player .screen.playing .bigplay{opacity:0;transform:scale(.8)}
.ctrls{display:grid;grid-template-columns:auto auto minmax(0,1fr) auto auto;gap:12px;align-items:center;padding:12px 14px;border-top:1px solid var(--line)}
.cbtn{height:38px;min-width:38px;padding:0 10px;border-radius:10px;border:1px solid var(--line-strong);background:transparent;display:grid;place-items:center;cursor:pointer;font-family:var(--mono);font-size:11px;letter-spacing:.06em;transition:background .2s,border-color .2s}
.cbtn:hover{border-color:var(--accent)}
.cbtn[aria-pressed="true"]{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.cbtn svg{width:15px;height:15px;fill:currentColor}
.tcode{font-family:var(--mono);font-size:12.5px;font-variant-numeric:tabular-nums;min-width:10ch}
.tcode small{color:var(--muted)}
.tl{position:relative;height:40px;cursor:pointer;touch-action:none;min-width:0}
.tl .segs{position:absolute;left:0;right:0;top:14px;height:12px;display:flex;gap:2px}
.tl .seg{height:100%;border-radius:3px;background:var(--line-strong);position:relative;overflow:hidden}
.tl .seg i{position:absolute;inset:0;background:var(--accent);transform-origin:left;transform:scaleX(0)}
.tl .ph{position:absolute;top:5px;bottom:5px;width:2px;background:var(--text);left:0;pointer-events:none;border-radius:2px}
.tl .tip{position:absolute;bottom:calc(100% + 4px);transform:translateX(-50%);background:var(--text);color:var(--bg);font:500 11px/1 var(--mono);padding:6px 8px;border-radius:6px;white-space:nowrap;pointer-events:none;opacity:0;transition:opacity .15s}
.tl:hover .tip{opacity:1}
.chaps{display:grid;grid-template-columns:repeat(var(--n,6),minmax(0,1fr));gap:2px;padding:0 14px 14px}
.chap{background:none;border:0;border-top:2px solid var(--line-strong);text-align:left;padding:10px 6px 2px 0;cursor:pointer;display:grid;gap:2px;min-width:0;transition:border-color .2s}
.chap span{font-family:var(--mono);font-size:10.5px;color:var(--muted);letter-spacing:.08em}
.chap b{font-size:13px;font-weight:600;line-height:1.3;color:var(--muted);transition:color .2s}
.chap:hover b,.chap.on b{color:var(--text)}
.chap.on{border-top-color:var(--accent)}
.film-note{margin-top:12px;color:var(--muted);display:flex;gap:18px;flex-wrap:wrap}
kbd{font-family:var(--mono);font-size:10px;border:1px solid var(--line-strong);border-bottom-width:2px;border-radius:4px;padding:1px 5px}

/* vertical film (9:16): video beside its chapter rail */
.player.vertical{display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);grid-template-rows:auto 1fr auto;background:var(--surface)}
.player.vertical .screen{aspect-ratio:9/16;grid-row:1/4;grid-column:1}
.player.vertical>*:not(.screen){grid-column:2}
.player.vertical .ctrls{border-top:0;border-left:1px solid var(--line);align-self:end;grid-template-columns:auto auto minmax(0,1fr) auto auto}
.player.vertical .chaps{grid-template-columns:1fr;border-left:1px solid var(--line);padding:24px 24px 0;align-content:start;gap:0}
.player.vertical .chap{border-top:0;border-left:2px solid var(--line-strong);padding:12px 0 12px 16px}
.player.vertical .chap.on{border-left-color:var(--accent)}
.player.vertical .chap b{font-size:16px}
.player.vertical .rail-head{padding:24px 24px 0;border-left:1px solid var(--line)}

/* brief */
.c-brief{padding-block:clamp(64px,8vw,110px);border-top:1px solid var(--line)}
.brief-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(24px,4vw,64px);margin-top:36px}
.brief-grid h3{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-2);margin-bottom:12px}
.brief-grid p{font-size:clamp(18px,1.8vw,22px);line-height:1.5}

/* beats */
.c-beats{padding-block:clamp(64px,8vw,110px);border-top:1px solid var(--line)}
.beats{display:grid;gap:clamp(48px,7vw,96px);margin-top:clamp(36px,5vw,64px);counter-reset:b}
.beat{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:clamp(24px,4vw,64px);align-items:center}
.beat:nth-child(even) .shot{order:2}
.shot{position:relative;border-radius:var(--radius,16px);overflow:hidden;border:1px solid var(--line-strong);background:var(--surface);box-shadow:var(--shadow,0 30px 80px -40px rgba(0,0,0,.5));cursor:zoom-in;padding:0;display:block;width:100%}
.shot img{width:100%;height:auto;transition:transform .8s cubic-bezier(.2,.8,.2,1)}
.shot:hover img{transform:scale(1.03)}
.shot.tall{max-width:320px;justify-self:center;border-radius:28px;border:8px solid var(--device,#111)}
.beat .txt{display:grid;gap:14px;align-content:center;min-width:0}
.beat .num{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--accent-2)}
.beat h3{font-size:clamp(26px,3vw,40px)}
.beat p{color:var(--muted);font-size:17px;max-width:46ch}
.jump{justify-self:start;display:inline-flex;align-items:center;gap:8px;background:none;border:1px solid var(--line-strong);border-radius:999px;padding:8px 14px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.jump:hover{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}

/* special + credits */
.c-special{padding-block:clamp(64px,8vw,110px);border-top:1px solid var(--line)}
.c-credits{padding-block:clamp(56px,7vw,90px);border-top:1px solid var(--line)}
.credits{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.credits h3{font-family:var(--mono);font-size:11.5px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.credits ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.tag{display:inline-block;padding:6px 12px;border-radius:999px;border:1px solid var(--line-strong);font-size:13.5px}

/* next + cta */
.c-next{border-top:1px solid var(--line)}
.next{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(20px,4vw,56px);align-items:center;padding-block:clamp(56px,7vw,90px);text-decoration:none}
.next .img{border-radius:var(--radius,16px);overflow:hidden;border:1px solid var(--line-strong);aspect-ratio:16/9;background:var(--surface)}
.next .img img{width:100%;height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.2,.8,.2,1)}
.next:hover .img img{transform:scale(1.04)}
.next .lbl{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.next h2{margin:10px 0 12px;display:flex;align-items:center;gap:.3em;flex-wrap:wrap}
.next h2 .ar{display:inline-block;transition:transform .3s;color:var(--accent)}
.next:hover h2 .ar{transform:translateX(10px)}
.next p{color:var(--muted)}
.c-cta{padding-block:clamp(72px,9vw,120px);border-top:1px solid var(--line);text-align:center}
.c-cta h2{max-width:18ch;margin:0 auto 26px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:16px 26px;border-radius:999px;font-weight:600;font-size:16px;text-decoration:none;background:var(--accent);color:var(--on-accent);transition:transform .25s,box-shadow .25s}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px -12px var(--accent)}
.btn.alt{background:transparent;color:var(--text);border:1px solid var(--line-strong)}
.cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.c-foot{border-top:1px solid var(--line);padding-block:24px calc(env(safe-area-inset-bottom,0px) + 24px)}
.c-foot .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--muted)}
.c-foot a{text-decoration:none}
.c-foot a:hover{color:var(--text)}

/* lightbox */
.lb{position:fixed;inset:0;z-index:90;background:rgba(0,0,0,.88);display:grid;place-items:center;padding:clamp(16px,4vw,48px);cursor:zoom-out}
.lb img{max-height:100%;max-width:100%;width:auto;border-radius:12px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.lb .x{position:absolute;top:calc(env(safe-area-inset-top,0px) + 14px);right:16px;width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.3);background:rgba(0,0,0,.4);color:#fff;font-size:20px;cursor:pointer}

/* reveal: only items below the fold at load start hidden */
.js .rv.pre{opacity:0;transform:translateY(24px)}
.rv{transition:opacity .8s cubic-bezier(.2,.8,.2,1),transform .8s cubic-bezier(.2,.8,.2,1)}

@media (max-width:900px){
  .c-hero-grid{grid-template-columns:minmax(0,1fr)}
  .beat{grid-template-columns:minmax(0,1fr)}
  .beat:nth-child(even) .shot{order:0}
  .brief-grid{grid-template-columns:minmax(0,1fr)}
  .credits{grid-template-columns:minmax(0,1fr)}
  .next{grid-template-columns:minmax(0,1fr)}
  .chaps{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:6px}
  .player.vertical{grid-template-columns:minmax(0,1fr);grid-template-rows:none}
  .player.vertical>*:not(.screen){grid-column:1}
  .player.vertical .screen{grid-column:1}
  .player.vertical .screen{grid-row:auto;aspect-ratio:9/16;margin-inline:auto;height:auto;width:min(100%,calc(78vh * 9 / 16));background:transparent}
  .player.vertical .ctrls,.player.vertical .chaps,.player.vertical .rail-head{border-left:0}
  .player.vertical .chaps{padding:4px 14px 14px}
}
@media (max-width:600px){
  .c-idx{display:none}
  .ctrls{grid-template-columns:auto minmax(0,1fr) auto auto;row-gap:4px}
  .ctrls .tl{grid-column:1/-1;grid-row:2}
  .player.vertical .ctrls{grid-template-columns:auto minmax(0,1fr) auto auto}
  .chaps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .film-note .keys{display:none}
  .facts{grid-template-columns:1fr 1fr}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}