/* ============================================================
   bf-case.css · Black Forest, the revised case study (v3.0).
   Sits on spec-campaign.css (whose default skin is Black Forest).
   Ink #11100E, paper #EDE5D7; each product page sets --accent.
   ============================================================ */
body.cs.bf{--alt2-bg:#1B1915;--alt2-fg:#EDE5D7;--alt2-muted:rgba(237,229,215,.74);--alt2-rule:rgba(237,229,215,.18);--alt2-mark:var(--accent)}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ------------------------------------------------------------ Earmuffs: the opening choice */
.bf-em{display:grid;gap:12px;align-content:end;max-width:560px}
.bf-em__q{display:flex;align-items:center;gap:12px;font:700 clamp(28px,2.6vw,40px)/1 var(--display);letter-spacing:.02em;color:var(--fg)}
.bf-em__icon{width:34px;height:26px;flex:none;color:var(--accent)}
.bf-em__deck{font-size:16px;line-height:1.4;color:var(--muted)}
.bf-em__opts{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:6px}
.bf-em__opt{display:grid;gap:6px;text-align:left;padding:14px 16px 15px;border:1px solid var(--rule);background:transparent;color:var(--fg);font:400 14px/1.35 var(--body);cursor:pointer;border-radius:0}
.bf-em__opt b{font:700 13px/1 var(--body);letter-spacing:.14em;text-transform:uppercase}
.bf-em__opt span{color:var(--muted)}
.bf-em__opt[aria-pressed="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.bf-em__opt[aria-pressed="true"] span{color:inherit;opacity:.8}
.bf-em__opt:disabled{cursor:default}
.bf-em__opt:not(:disabled):hover{border-color:var(--fg)}
.bf-em__opt:focus-visible,.bf-pill:focus-visible,.bf-chips button:focus-visible,.bf-film__seg button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.bf-em__nojs{font-size:14px;color:var(--muted)}
.bf-em--compact .bf-em__q{font-size:26px}.bf-em--compact .bf-em__deck{font-size:15px}

/* the control that stays: a small pill, bottom left */
.bf-pill{position:fixed;left:max(14px,env(safe-area-inset-left));bottom:max(14px,env(safe-area-inset-bottom));z-index:60;display:inline-flex;align-items:center;gap:8px;
  padding:10px 14px 10px 12px;border:1px solid rgba(237,229,215,.28);background:rgba(17,16,14,.92);color:#EDE5D7;font:700 12px/1 'CS Space Grotesk',system-ui,sans-serif;letter-spacing:.14em;text-transform:uppercase;cursor:pointer;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.bf-pill .bf-em__icon{width:22px;height:17px;color:#C09B70}
.bf-pill b{min-width:2.4em;text-align:left;color:#C09B70}
html[data-earmuffs="off"] .bf-pill b{color:#F0896B}
.bf-pill--placard{position:static;padding:7px 10px;margin-right:8px;border-color:rgba(17,16,14,.28);background:transparent;color:#11100E;font-size:11px;-webkit-backdrop-filter:none;backdrop-filter:none}
.bf-pill--placard .bf-em__icon,.bf-pill--placard b{color:#11100E}
html[data-earmuffs="off"] .bf-pill--placard b{color:#B23A17}
html.cs-lock .bf-pill:not(.bf-pill--placard){display:none}

/* ------------------------------------------------------------ the opening */
.bf-open{background:var(--bg);color:var(--fg);padding:calc(var(--cs-head) + clamp(36px,5vw,84px)) 0 clamp(40px,5vw,80px)}
.bf-open__head{display:grid;gap:clamp(28px,3vw,48px);align-items:end}
@media (min-width:1000px){ .bf-open__head{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr)} }
.bf-title{font-size:clamp(56px,8vw,140px)!important;max-width:none!important;margin-top:14px!important;line-height:.86}
.bf-strip{list-style:none;display:grid;grid-auto-flow:column;grid-auto-columns:minmax(220px,1fr);gap:clamp(6px,.8vw,12px);margin:clamp(40px,5vw,72px) 0 0!important;padding:0 var(--cs-edge)!important;overflow-x:auto;scroll-snap-type:x mandatory;max-width:calc(var(--cs-max) + 2*var(--cs-edge));margin-inline:auto!important}
.bf-strip li{scroll-snap-align:start}
.bf-strip a{display:grid;gap:10px;color:var(--fg);text-decoration:none}
.bf-strip img{width:100%;aspect-ratio:4/5;object-fit:cover;background:#000}
.bf-strip span{font:700 12px/1.2 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.bf-strip a:hover span,.bf-strip a:focus-visible span{color:var(--fg)}
@media (max-width:760px){ .bf-strip{grid-auto-columns:72vw} }

/* ------------------------------------------------------------ the brand */
.bf-keep{display:grid;gap:clamp(24px,3vw,56px)}
@media (min-width:900px){ .bf-keep{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);align-items:end} }
.bf-keep__list{list-style:none;display:grid;border-top:2px solid var(--fg)}
.bf-keep__list li{padding:16px 0;border-bottom:1px solid var(--rule);font-size:clamp(17px,1.4vw,21px);line-height:1.4}
.bf-keep__move{font:700 clamp(26px,2.6vw,40px)/1.05 var(--display);text-transform:uppercase;max-width:20ch}

/* ------------------------------------------------------------ the voice */
.bf-voice{list-style:none;display:grid;border-top:2px solid var(--fg)}
.bf-voice li{display:grid;grid-template-columns:3.2em minmax(0,1fr);gap:4px 16px;padding:18px 0;border-bottom:1px solid var(--rule);align-items:baseline}
@media (min-width:900px){ .bf-voice li{grid-template-columns:3.2em minmax(0,.9fr) minmax(0,1.1fr)} }
.bf-voice__n{font:700 12px/1 var(--body);letter-spacing:.14em;color:var(--muted)}
.bf-voice__p{font:700 clamp(15px,1.1vw,17px)/1.3 var(--body);letter-spacing:.08em}
.bf-voice__ex{font:700 clamp(26px,2.4vw,40px)/1 var(--display);text-transform:uppercase;color:var(--accent);grid-column:2}
@media (min-width:900px){ .bf-voice__ex{grid-column:3} }

/* ------------------------------------------------------------ the color system */
.bf-color{display:grid;gap:clamp(20px,3vw,48px);align-items:start}
@media (min-width:980px){ .bf-color{grid-template-columns:minmax(0,1fr) minmax(360px,.9fr)} .bf-panel{position:sticky;top:calc(var(--cs-head) + 20px)} }
.bf-stage img{width:100%;max-width:640px;aspect-ratio:4/5;object-fit:cover;background:#000}
.bf-stage__cap{margin-top:12px;font-size:13.5px;line-height:1.45;color:var(--muted);max-width:60ch}
.bf-panel{display:grid;gap:18px;padding:clamp(18px,2vw,28px);border:1px solid var(--rule);background:rgba(237,229,215,.03)}
.bf-panel__row{display:grid;gap:8px}
.bf-panel__k{font:700 11px/1.2 var(--body);letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.bf-chips{display:flex;flex-wrap:wrap;gap:6px}
.bf-chips button{display:inline-flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid var(--rule);background:transparent;color:var(--fg);font:700 12px/1 var(--body);letter-spacing:.08em;text-transform:uppercase;cursor:pointer;border-radius:0}
.bf-chips--p button::before{content:'';width:10px;height:10px;background:var(--c)}
.bf-chips--s button b{font-weight:400;opacity:.6}
.bf-chips button[aria-pressed="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.bf-panel:not(.is-live) .bf-chips button{pointer-events:none}
.bf-axis{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}
.bf-axis i{height:8px;background:var(--rule)}
.bf-axis i.on{background:var(--accent)}
.bf-panel__agg{font-size:13px;color:var(--muted)}
.bf-panel__line{font:700 clamp(28px,2.4vw,38px)/.98 var(--display);text-transform:uppercase}
.bf-panel__sw{list-style:none;display:flex;flex-wrap:wrap;gap:10px 14px}
.bf-panel__sw li{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.bf-panel__sw i{width:26px;height:26px;background:var(--c);box-shadow:inset 0 0 0 1px rgba(237,229,215,.18)}
.bf-panel__sw span{display:grid;line-height:1.2}.bf-panel__sw b{font:400 12px/1.2 'CS Mono',ui-monospace,monospace;color:var(--fg)}
.bf-panel__use{display:grid;gap:10px;border-top:1px solid var(--rule);padding-top:14px}
.bf-panel__use div{display:grid;grid-template-columns:7.5em minmax(0,1fr);gap:10px}
.bf-panel__use dt{font:700 11px/1.5 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.bf-panel__use dd{margin:0;font-size:15px;line-height:1.45}
.bf-panel__fin ul{list-style:none;display:flex;gap:8px;margin-top:8px!important}
.bf-panel__fin li{width:84px;display:grid;gap:4px;font-size:11px;color:var(--muted)}
.bf-panel__fin img{aspect-ratio:4/5;object-fit:cover}

/* ------------------------------------------------------------ five campaigns */
.bf-chaps{list-style:none;display:grid;gap:clamp(10px,1.2vw,18px)}
@media (min-width:900px){ .bf-chaps{grid-template-columns:repeat(6,minmax(0,1fr))} .bf-chap{grid-column:span 2} .bf-chap:nth-child(-n+2){grid-column:span 3} }
.bf-chap a{display:grid;color:var(--fg);text-decoration:none;background:#000}
.bf-chap img{width:100%;aspect-ratio:16/9;object-fit:cover}
@media (max-width:760px){ .bf-chap img{aspect-ratio:4/5} }
.bf-chap__cap{display:grid;grid-template-columns:auto 1fr auto;gap:4px 12px;align-items:center;padding:14px 16px 16px;border-top:6px solid var(--a);background:var(--bg)}
.bf-chap__cap b{font:700 12px/1 var(--body);letter-spacing:.14em;color:var(--muted)}
.bf-chap__n{font:700 12px/1.2 var(--body);letter-spacing:.14em;text-transform:uppercase}
.bf-chap__cap > span[data-em],.bf-chap__cap > span:nth-child(3){grid-column:1/-1;font:700 clamp(22px,2vw,30px)/1 var(--display);text-transform:uppercase}
.bf-chap__go{grid-column:3;grid-row:1}
.bf-chap a:hover .bf-chap__go,.bf-chap a:focus-visible .bf-chap__go{transform:translateX(4px)}

/* ------------------------------------------------------------ commercials */
.bf-films{display:grid;gap:clamp(24px,2.4vw,36px) clamp(12px,1.4vw,20px)}
@media (min-width:760px){ .bf-films{grid-template-columns:repeat(2,minmax(0,1fr))} }
@media (min-width:1200px){ .bf-films{grid-template-columns:repeat(3,minmax(0,1fr))} }
.bf-film{display:grid;gap:10px;align-content:start}
.bf-film__frame{position:relative;background:#000;overflow:hidden;aspect-ratio:16/9}
.bf-film[data-format="9x16"] .bf-film__frame{aspect-ratio:9/16;max-height:min(80vh,760px);margin:0 auto;width:100%}
.bf-film__frame img{width:100%;height:100%;object-fit:cover}
.bf-film[data-format="9x16"] .bf-film__frame img{object-fit:contain}
.bf-film video{position:absolute;inset:0;width:100%;height:100%;background:#000}
.bf-film__play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);white-space:nowrap;display:inline-flex;align-items:center;gap:8px;padding:11px 14px 11px 11px;border:0;background:#EDE5D7;color:#11100E;font:700 12px/1 var(--body);letter-spacing:.12em;text-transform:uppercase;cursor:pointer}
.bf-film__play svg{width:18px;height:18px}
.bf-film__play:hover{background:#fff}
.bf-film__play:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.bf-film.is-playing .bf-film__play{display:none}
.bf-film__cap{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;font-size:13px;color:var(--muted)}
.bf-film__cap b{font:700 12px/1 var(--body);letter-spacing:.12em;text-transform:uppercase;color:var(--fg)}
.bf-film__take{padding:3px 7px;border:1px solid var(--rule);font-size:11.5px}
html[data-earmuffs="off"] .bf-film__take{border-color:#F0896B;color:var(--fg)}
.bf-film__seg{margin-left:auto}
.bf-film__tx summary{cursor:pointer;font:700 11px/1 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding:6px 0}
.bf-film__tx p{font-size:14px;line-height:1.55;color:var(--muted);max-width:62ch;margin-top:6px!important;white-space:pre-line}
.bf-film--big .bf-film__frame{max-width:100%}
/* v3.1: the three approved commercials. The first holds the full measure; the other two sit side by side beneath it. */
.bf-films--spots{grid-template-columns:repeat(2,minmax(0,1fr))}
.bf-films--spots .bf-spot--lead{grid-column:1/-1}
@media (max-width:759px){ .bf-films--spots{grid-template-columns:1fr} }
.bf-spot .bf-film__frame img{object-fit:cover}
.bf-film__line{flex-basis:100%;font-size:13px;color:var(--muted)}
.bf-spot .bf-film__cap{align-items:baseline}
@media (min-width:1000px){ .bf-film--big[data-format="9x16"] .bf-film__frame{max-width:430px} }

/* ------------------------------------------------------------ tables and swatches */
.bf-table{overflow-x:auto;max-width:100%}
.bf-table table{border-collapse:collapse;width:100%;min-width:760px;font-size:14px;line-height:1.45}
.bf-table th,.bf-table td{text-align:left;vertical-align:top;padding:10px 12px 10px 0;border-bottom:1px solid var(--rule)}
.bf-table thead th{font:700 11px/1.3 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);border-bottom:2px solid var(--fg)}
.bf-notes .bf-table{margin:6px 0 10px}
.bf-hex{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;font:400 12.5px/1.2 'CS Mono',ui-monospace,monospace}
.bf-hex i{width:16px;height:16px;background:var(--c);box-shadow:inset 0 0 0 1px rgba(128,128,128,.35)}
.bf-sw{display:inline-flex;gap:2px}.bf-sw i{width:14px;height:22px;background:var(--c)}
.bf-tokens td,.bf-tokens th{white-space:nowrap}
.bf-files{list-style:none;display:grid;gap:6px}.bf-files span{color:var(--muted);font-size:12px}

/* ------------------------------------------------------------ a product page */
.bf-hero img{background:#000}
.bf-intro{padding:clamp(40px,5vw,80px) 0 clamp(20px,3vw,40px)}
.bf-intro__g{display:grid;gap:clamp(24px,3vw,48px);align-items:end}
@media (min-width:1000px){ .bf-intro__g{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr)} }
.bf-ptitle{font-size:clamp(46px,6.2vw,110px)!important;max-width:15ch!important;margin-top:14px!important}
.bf-obs{display:flex;flex-wrap:wrap;gap:12px 28px;margin-bottom:24px!important;color:var(--muted)}
.bf-seven{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (min-width:700px){ .bf-seven{grid-template-columns:repeat(4,minmax(0,1fr))} }
@media (min-width:1200px){ .bf-seven{grid-template-columns:repeat(7,minmax(0,1fr))} }
.bf-seven li{display:grid;gap:8px}
.bf-seven p{display:grid;gap:6px;font-size:12px}.bf-seven p b{font:700 11px/1.2 var(--body);letter-spacing:.12em;text-transform:uppercase}
.bf-mini img{aspect-ratio:4/5;object-fit:cover;width:100%}
.bf-more img{aspect-ratio:4/5!important}

@media (prefers-reduced-motion:reduce){ .bf-chap__go{transition:none} .bf-strip{scroll-behavior:auto} }
@media print{ .bf-pill{display:none} }