/* =====================================================================
   SB Development | 1 Oak — About page (v2)
   Loads after home.css; reuses its tokens, header, buttons, contact, footer.
   ===================================================================== */

/* ---------------------------------------------------------------
   Page hero
   --------------------------------------------------------------- */
.ah{position:relative;min-height:88svh;display:flex;flex-direction:column;justify-content:flex-end;color:var(--bone);overflow:hidden;isolation:isolate;background:var(--ink)}
.ah-media{position:absolute;inset:0;z-index:-2}
.ah-media img{width:100%;height:100%;object-fit:cover;object-position:50% 40%;transform:scale(1.1);animation:ahSettle 3.2s var(--ease) forwards}
@keyframes ahSettle{to{transform:scale(1.02)}}
.ah-media::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,15,18,.55) 0%,rgba(13,15,18,.15) 30%,rgba(13,15,18,.55) 65%,rgba(13,15,18,.97) 100%),
             linear-gradient(90deg,rgba(13,15,18,.5),rgba(13,15,18,0) 60%)}
.ah-grain{position:absolute;inset:0;z-index:-1;opacity:.07;pointer-events:none;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.ah .wrap{position:relative;padding-top:calc(var(--hdr-h) + 34px);padding-bottom:clamp(30px,4vw,52px);display:flex;flex-direction:column;min-height:88svh}
.ah-top{font-family:var(--bebas);display:flex;justify-content:space-between;align-items:center;font-size:15px;font-weight:700;letter-spacing:.17em;text-transform:uppercase;color:rgba(244,241,234,.6);opacity:0;animation:fade 1s var(--ease) .2s forwards}
.ah-crumb{display:inline-flex;align-items:center;gap:12px}
.ah-crumb a{color:rgba(244,241,234,.6);transition:color .3s}
.ah-crumb a:hover{color:var(--bone)}
.ah-crumb i{width:22px;height:1px;background:var(--bronze);display:inline-block}
.ah-body{margin-top:auto;padding-top:clamp(56px,8vw,110px)}
.ah-eyebrow{font-family:var(--bebas);display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;font-size:16px;font-weight:600;letter-spacing:.17em;text-transform:uppercase;color:rgba(244,241,234,.78);opacity:0;animation:fade 1s var(--ease) .35s forwards}
.ah-eyebrow .dot{width:5px;height:5px;border-radius:50%;background:var(--bronze)}
.ah-title{font-family:var(--serif);font-weight:400;font-size:clamp(56px,8.6vw,138px);line-height:.94;letter-spacing:.01em;margin:22px 0 0;max-width:none}
.ah-title em{font-style:normal;color:inherit}
.ah-title .line{display:block;overflow:hidden;padding-bottom:.16em;margin-bottom:-.16em;padding-left:.1em;margin-left:-.1em}
.ah-title .line > span{display:block;transform:translateY(130%);animation:rise 1.1s var(--ease) .25s forwards}
.ah-title .line:nth-child(2) > span{animation-delay:.37s}
.ah-title .line:nth-child(3) > span{animation-delay:.49s}
.ah-grid{display:grid;grid-template-columns:minmax(0,1.1fr) auto;gap:32px;align-items:end;margin-top:clamp(26px,3vw,40px)}
.ah-sub{max-width:56ch;color:rgba(244,241,234,.82);font-size:clamp(15px,1.25vw,18px);line-height:1.65;opacity:0;animation:fade 1.1s var(--ease) .7s forwards}
.ah-ctas{display:flex;flex-wrap:wrap;gap:14px;opacity:0;animation:fade 1.1s var(--ease) .85s forwards}
.ah-foot{font-family:var(--bebas);margin-top:clamp(36px,5vw,64px);padding-top:20px;border-top:1px solid rgba(255,255,255,.14);display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  font-size:16px;letter-spacing:.14em;text-transform:uppercase;color:rgba(244,241,234,.6);opacity:0;animation:fade 1s var(--ease) 1.05s forwards}
@media(max-width:900px){.ah-grid{grid-template-columns:1fr}.ah-side{display:none}.ah{min-height:78svh}.ah .wrap{min-height:78svh}}

/* ---------------------------------------------------------------
   Story
   --------------------------------------------------------------- */
.ab-story-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.35fr);gap:clamp(36px,6vw,96px)}
.ab-story-lead{position:sticky;top:110px;align-self:start}
.ab-story-lead .h2{margin-top:18px;max-width:12ch}
.ab-story-copy .lead{font-family:var(--sans);font-size:clamp(26px,2.5vw,38px);line-height:1.25;}
.ab-cols{display:grid;grid-template-columns:1fr 1fr;gap:clamp(22px,3vw,40px);margin-top:34px;color:var(--muted);font-size:15.5px;line-height:1.72}
.ab-cols p:first-child{position:relative;padding-top:18px}
.ab-cols p:first-child::before{content:"";position:absolute;left:0;top:0;width:44px;height:2px;background:var(--bronze)}
.ab-cols p:last-child{padding-top:18px;border-top:1px solid var(--line)}
.ab-story-note{display:grid;grid-template-columns:auto 1fr;gap:22px 24px;align-items:start;margin-top:40px;padding:26px 28px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.5)}
.ab-story-note .mark{grid-row:1}
.ab-story-note p{grid-column:2}
.ab-story-note .mark{width:44px;filter:invert(1);opacity:.85}
.ab-story-note p{font-size:15px;line-height:1.65;color:var(--text)}
@media(max-width:900px){.ab-story-grid{grid-template-columns:1fr}.ab-story-lead{position:static}.ab-story-lead .h2{max-width:none}.ab-cols{grid-template-columns:1fr}.ab-cols p:last-child{padding-top:0;border-top:0}}

/* ---------------------------------------------------------------
   Two disciplines — hover-expanding split
   --------------------------------------------------------------- */
.ab-split{background:var(--ink);color:var(--bone);padding-top:clamp(72px,9vw,130px)}
.ab-split-head{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:end;margin-bottom:clamp(30px,4vw,52px)}
.ab-split-head .h2{margin-top:18px;max-width:12ch}
.ab-split-head p{max-width:40ch}
.ab-panels{display:flex;min-height:clamp(560px,70vh,760px);isolation:isolate}
.ab-panel{position:relative;flex:1 1 0;overflow:hidden;display:flex;align-items:flex-end;transition:flex 1s cubic-bezier(.22,1,.36,1);isolation:isolate}
.ab-panel img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;transform:scale(1.06);filter:grayscale(.35) brightness(.72);transition:transform 1.6s var(--ease),filter 1s var(--ease)}
.ab-panel::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(13,15,18,.25) 0%,rgba(13,15,18,.35) 40%,rgba(13,15,18,.94) 100%);transition:opacity .8s}
.ab-panel + .ab-panel{border-left:1px solid rgba(255,255,255,.14)}
.ab-panels:hover .ab-panel{flex:.75}
.ab-panels .ab-panel:hover{flex:1.6}
.ab-panel:hover img{transform:scale(1);filter:grayscale(0) brightness(.85)}
.ab-panel-in{position:relative;padding:clamp(28px,3.4vw,52px) clamp(24px,3.4vw,56px) clamp(30px,3.4vw,52px);max-width:640px}
.ab-panel .k{font-family:var(--bebas);font-size:15px;letter-spacing:.34em;text-transform:uppercase;color:var(--bronze)}
.ab-panel h3{font-family:var(--serif);font-size:clamp(38px,4.2vw,64px);line-height:1;margin:12px 0 16px;font-weight:400}
.ab-panel p{font-size:15.5px;line-height:1.65;color:rgba(244,241,234,.82);max-width:52ch}
.ab-list{margin-top:20px;display:grid;gap:8px;max-height:0;opacity:0;overflow:hidden;transition:max-height .9s var(--ease),opacity .7s var(--ease) .1s}
.ab-panel:hover .ab-list{max-height:240px;opacity:1}
.ab-list li{position:relative;padding-left:20px;font-size:14.5px;letter-spacing:.02em;color:rgba(244,241,234,.9)}
.ab-list li::before{content:"";position:absolute;left:0;top:.6em;width:9px;height:1px;background:var(--bronze)}
.ab-panel-num{position:absolute;right:clamp(20px,3vw,44px);top:clamp(22px,3vw,40px);font-family:var(--serif);font-size:clamp(56px,7vw,110px);line-height:1;color:rgba(244,241,234,.14);letter-spacing:.04em;transition:color .6s}
.ab-panel:hover .ab-panel-num{color:rgba(160,160,157,.55)}
@media(max-width:900px){
  .ab-split-head{grid-template-columns:1fr}
  .ab-panels{flex-direction:column;min-height:0}
  .ab-panel{min-height:420px;flex:none}
  .ab-panel + .ab-panel{border-left:0;border-top:1px solid rgba(255,255,255,.14)}
  .ab-panels:hover .ab-panel,.ab-panels .ab-panel:hover{flex:none}
  .ab-list{max-height:none;opacity:1}
}

/* ---------------------------------------------------------------
   Milestones — horizontal timeline
   --------------------------------------------------------------- */
.ab-timeline{overflow:hidden}
.ab-timeline .section-head{margin-bottom:clamp(28px,3.5vw,44px)}
.ab-tl-nav{display:flex;gap:10px}
.ab-tl-nav button{width:52px;height:52px;border-radius:50%;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;transition:background .4s,color .4s,border-color .4s;color:var(--text)}
.ab-tl-nav button svg{width:18px;height:18px}
.ab-tl-nav button:hover{background:var(--ink);color:var(--bone);border-color:var(--ink)}
.ab-tl-nav button:disabled{opacity:.3;cursor:default;background:none;color:var(--text);border-color:var(--line)}
.ab-tl-track{--tlgap:clamp(18px,2.2vw,30px);position:relative;display:flex;gap:var(--tlgap);overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;
  padding:52px var(--gutter) 10px;scroll-padding-left:var(--gutter);scroll-padding-right:var(--gutter);cursor:grab;-webkit-overflow-scrolling:touch}
.ab-tl-track::-webkit-scrollbar{display:none}
.ab-tl-track.dragging{cursor:grabbing;scroll-snap-type:none}
.ab-tl-line{position:absolute;left:0;width:var(--gutter);top:32px;height:1px;background:var(--line)}
.ab-tl-item::after{content:"";position:absolute;left:0;right:calc(-1 * var(--tlgap));top:-20px;height:1px;background:var(--line);z-index:0}
.ab-tl-item:last-of-type::after{right:calc(-2 * var(--gutter))}
.ab-tl-item{position:relative;flex:0 0 clamp(280px,26vw,360px);scroll-snap-align:start;padding-top:0}
.ab-tl-item::before{content:"";position:absolute;z-index:1;left:0;top:-25px;width:11px;height:11px;border-radius:50%;background:var(--bone-2);border:2px solid var(--sand);transition:border-color .5s,background .5s,transform .5s var(--ease)}
.ab-tl-item:hover::before{background:var(--bronze);border-color:var(--bronze);transform:scale(1.3)}
.ab-tl-item .yr{font-family:var(--serif);font-size:clamp(46px,4.6vw,66px);line-height:1;color:var(--bronze);letter-spacing:.02em}
.ab-tl-item figure{margin:16px 0 18px;border-radius:14px;overflow:hidden;aspect-ratio:16/10;background:var(--sand)}
.ab-tl-item figure img{width:100%;height:100%;object-fit:cover;transform:scale(1.04);filter:grayscale(.3);transition:transform 1.3s var(--ease),filter .8s var(--ease)}
.ab-tl-item:hover figure img{transform:scale(1);filter:grayscale(0)}
.ab-tl-item h4{font-family:var(--serif);font-size:24px;line-height:1.1;font-weight:400;margin-bottom:10px}
.ab-tl-item p{font-size:14px;line-height:1.65;color:var(--muted)}
.ab-tl-end{flex:0 0 calc(var(--gutter) * 2)}

/* Figures inside the story note */
.ab-note-figs{grid-column:2;display:flex;gap:clamp(24px,3vw,44px);margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.ab-note-figs b{font-family:var(--serif);font-size:30px;line-height:1;font-weight:400;color:var(--bronze)}
.ab-note-figs span{font-family:var(--bebas);display:block;margin-top:5px;font-size:15px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted)}
@media(max-width:900px){.ab-story-note{grid-template-columns:1fr}}