/* ============================================================
   IPHIOS LOGISTICS CORP. — 04 / events
   The events archive and its viewer. Loads AFTER tokens.css,
   components.css and sections.css, and borrows every colour,
   rule and easing from them — nothing new is invented here
   except the viewer, which deliberately inverts the palette.

   Contents
     1 · masthead
     2 · archive bar + year filter
     3 · event cards
     4 · the viewer (dark room)
     5 · the FLIP flyer (the morph layer)
     6 · responsive
     7 · accessibility floor
   ============================================================ */


/* ============================================================
   1 · MASTHEAD
   No photograph here on purpose. The covers below are the
   photography; the top of the page is type, air and a ledger
   line of numbers pulled live from the data.
   ============================================================ */

.skip{
  position:absolute;left:-9999px;top:0;z-index:120;
  background:var(--ink);color:var(--paper);
  padding:12px 18px;font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;
}
.skip:focus{left:calc(var(--rail) + 12px);top:12px}

.mast{
  padding-top:clamp(122px,15vw,196px);
  padding-bottom:clamp(34px,4.4vw,62px);
}
.mast__t{
  font-family:var(--f-display);font-weight:400;
  font-size:clamp(44px,8.4vw,132px);
  line-height:.93;letter-spacing:-.032em;
  margin:0;max-width:13ch;
}
.mast__t em{font-style:italic;font-weight:400}

.mast__foot{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:clamp(26px,4vw,64px);
  margin-top:clamp(30px,4vw,58px);padding-top:26px;
  border-top:1px solid var(--line);
}

/* the ledger — every figure is computed from the events array,
   so it can never drift out of date */
.ledger{display:flex;flex-wrap:wrap;gap:clamp(22px,3.4vw,58px);margin:0}
.ledger div{display:flex;flex-direction:column;gap:8px}
.ledger dt{
  font-family:var(--f-mono);font-size:9.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--ash-2);order:2;
}
.ledger dd{
  order:1;margin:0;
  font-family:var(--f-display);font-size:clamp(28px,3.4vw,50px);
  line-height:1;letter-spacing:-.02em;
}


/* ============================================================
   2 · ARCHIVE BAR + YEAR FILTER
   The filter renders itself only when there is more than one
   year in the data — a control with one option is furniture.
   ============================================================ */

.arch{padding-top:0}

.arch__bar{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:clamp(30px,3.6vw,54px);
}
.arch__bar .eyebrow{margin-bottom:0}

/* reuses .form__seg / .seg from components.css so the chips
   match the booking form exactly */
.arch__filter{margin:0}
.arch__filter .seg[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}

.arch__empty{
  margin:0;padding:60px 0;text-align:center;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ash-2);
}


/* ============================================================
   3 · EVENT CARDS
   Twelve-column magazine grid. The newest entry runs full
   width as the lead; everything after it sits in halves with
   a staggered drop so the eye zig-zags down the page.
   ============================================================ */

.arch__grid{
  display:grid;grid-template-columns:repeat(12,1fr);
  gap:clamp(38px,4.6vw,90px) clamp(20px,2.6vw,44px);
}

.ev{
  grid-column:span 6;margin:0;
  opacity:0;transform:translateY(28px);
  transition:opacity .9s var(--ease),transform .9s var(--ease);
}
.ev.is-in{opacity:1;transform:none}
.ev--lead{grid-column:1/13}
/* editorial drop — every third card falls a little lower */
.ev:nth-child(3n){margin-top:clamp(0px,4.4vw,78px)}

.ev__open{display:block;color:inherit}
.ev__open:focus-visible{outline-offset:6px}

.ev__frame{
  position:relative;display:block;overflow:hidden;
  background:var(--bone);aspect-ratio:4/5;
}
.ev--lead .ev__frame{aspect-ratio:16/9}

.ev__img{
  width:100%;height:100%;object-fit:cover;
  object-position:50% 30%;
  /* same warm grade as the rest of the site's photography */
  filter:saturate(.9) contrast(1.03) brightness(1.02) sepia(.08);
  transform:scale(1.04);
  transition:transform 1.3s var(--ease),filter .8s var(--ease);
}
.ev__open:hover .ev__img,
.ev__open:focus-visible .ev__img{
  transform:scale(1.09);
  filter:saturate(1) contrast(1.05) brightness(1.03) sepia(0);
}
/* if a file is missing, the frame stays a warm surface rather
   than a broken-image icon */
.ev__img.is-missing{opacity:0}

.ev__veil{
  position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(20,18,15,0) 46%,rgba(20,18,15,.5) 100%);
  opacity:0;transition:opacity .6s var(--ease);
}
.ev__open:hover .ev__veil,
.ev__open:focus-visible .ev__veil{opacity:1}

/* corner tags */
.ev__tag,.ev__frames{
  position:absolute;z-index:2;
  font-family:var(--f-mono);font-size:9.5px;letter-spacing:.16em;
  text-transform:uppercase;padding:7px 12px;
}
.ev__tag{top:0;left:0;background:var(--amber);color:var(--ink)}
.ev__frames{
  bottom:0;right:0;background:rgba(251,249,245,.9);color:var(--ink);
  display:flex;align-items:center;gap:8px;
}
.ev__frames::before{
  content:"";width:14px;height:1px;background:var(--amber-deep);
  transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease);
}
.ev__open:hover .ev__frames::before{transform:scaleX(1)}

.ev__cap{
  position:relative;margin-top:18px;padding-top:15px;
  border-top:1px solid var(--line);
}
/* an amber rule draws itself across the caption on hover —
   the same gesture as the active service marker */
.ev__cap::after{
  content:"";position:absolute;left:0;top:-1px;height:1px;width:100%;
  background:var(--amber);transform:scaleX(0);transform-origin:left;
  transition:transform .7s var(--ease);
}
.ev__open:hover .ev__cap::after,
.ev__open:focus-visible .ev__cap::after{transform:scaleX(1)}

.ev__line{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;
  gap:10px 18px;
}
.ev__meta{color:var(--ash-2)}
.ev__meta b{color:var(--amber-deep);font-weight:400}

.ev__t{
  font-family:var(--f-display);font-weight:400;
  font-size:clamp(21px,2.1vw,31px);line-height:1.14;letter-spacing:-.016em;
  margin:10px 0 0;max-width:24ch;
}
.ev--lead .ev__t{font-size:clamp(28px,3.6vw,54px);line-height:1.04;max-width:18ch}

.ev__d{
  margin:10px 0 0;font-size:14.5px;line-height:1.6;
  color:var(--ash);max-width:54ch;font-weight:300;
}
.ev--lead .ev__d{font-size:clamp(15px,1.2vw,17px);max-width:58ch}


/* ============================================================
   4 · THE VIEWER — the dark room
   The one place on the site that inverts the palette. Paper
   drops away, the photograph is the only lit object, and every
   control retreats to a hairline until you reach for it.
   ============================================================ */

.viewer{position:fixed;inset:0;z-index:96;color:#EFE9DE}
.viewer[hidden]{display:none}

.viewer__scrim{
  position:absolute;inset:0;background:rgba(14,12,10,.97);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  opacity:0;transition:opacity .5s var(--ease);
}
.viewer.is-open .viewer__scrim{opacity:1}

.viewer__ui{
  position:relative;z-index:2;
  height:100vh;height:100dvh;
  display:grid;grid-template-rows:auto minmax(0,1fr) auto;
  gap:clamp(10px,1.6vw,20px);
  padding:clamp(14px,2vw,26px) clamp(14px,3vw,40px) clamp(14px,2vw,24px);
  overscroll-behavior:contain;
}

/* chrome fades up after the photograph has landed */
.viewer__head,.viewer__foot,.viewer__nav{
  opacity:0;transform:translateY(12px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.viewer.is-ready .viewer__head{opacity:1;transform:none;transition-delay:.06s}
.viewer.is-ready .viewer__nav{opacity:1;transform:none;transition-delay:.14s}
.viewer.is-ready .viewer__foot{opacity:1;transform:none;transition-delay:.10s}

/* ---------- head ---------- */
.viewer__head{
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding-bottom:14px;border-bottom:1px solid rgba(246,241,231,.14);
}
.viewer__kicker{color:rgba(246,241,231,.55);display:block}
.viewer__kicker b{color:var(--amber);font-weight:400}
.viewer__t{
  font-family:var(--f-display);font-weight:400;
  font-size:clamp(19px,2.3vw,34px);line-height:1.1;letter-spacing:-.018em;
  margin:8px 0 0;max-width:26ch;color:#F6F1E7;
}

.viewer__x{
  flex:none;width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(246,241,231,.22);position:relative;
  transition:border-color .35s var(--ease),background .35s var(--ease),transform .35s var(--ease);
}
.viewer__x::before,.viewer__x::after{
  content:"";position:absolute;left:50%;top:50%;width:15px;height:1px;
  background:#EFE9DE;transform-origin:center;
}
.viewer__x::before{transform:translate(-50%,-50%) rotate(45deg)}
.viewer__x::after{transform:translate(-50%,-50%) rotate(-45deg)}
.viewer__x:hover{background:var(--amber);border-color:var(--amber);transform:rotate(90deg)}
.viewer__x:hover::before,.viewer__x:hover::after{background:var(--ink)}

/* ---------- stage ---------- */
.viewer__stage{position:relative;min-height:0;display:grid;place-items:center;touch-action:pan-y}

.viewer__fig{position:relative;margin:0;width:100%;height:100%;display:grid;place-items:center}
/* two layers, so one photograph can wipe over the other */
.viewer__layer{
  position:absolute;max-width:100%;max-height:100%;width:auto;height:auto;
  object-fit:contain;opacity:0;will-change:clip-path,transform,opacity;
}
.viewer__layer.is-on{opacity:1}

.viewer__nav{
  position:absolute;top:50%;margin-top:-24px;z-index:3;
  width:48px;height:48px;border-radius:50%;
  border:1px solid rgba(246,241,231,.2);
  background:rgba(14,12,10,.4);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  display:grid;place-items:center;
}
.viewer.is-ready .viewer__nav:hover{background:var(--amber);border-color:var(--amber);color:var(--ink)}
.viewer__nav--prev{left:0}
.viewer__nav--next{right:0}
.viewer__nav svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.4}
.viewer__nav[disabled]{opacity:.22;pointer-events:none}

/* ---------- foot ---------- */
.viewer__foot{
  display:grid;grid-template-columns:minmax(0,1fr) auto;
  align-items:end;gap:14px clamp(18px,3vw,40px);
  padding-top:14px;border-top:1px solid rgba(246,241,231,.14);
}
.viewer__cap{
  margin:0 0 12px;font-size:14px;line-height:1.5;font-weight:300;
  color:rgba(246,241,231,.74);max-width:60ch;min-height:1.5em;
}

/* thumbnail rail — the contact sheet */
.viewer__rail{
  display:flex;gap:8px;overflow-x:auto;padding-bottom:2px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.viewer__rail::-webkit-scrollbar{display:none}
.vw-thumb{
  flex:none;width:66px;height:46px;padding:0;position:relative;
  border:1px solid transparent;opacity:.4;
  transition:opacity .4s var(--ease),border-color .4s var(--ease),transform .4s var(--ease);
}
.vw-thumb img{width:100%;height:100%;object-fit:cover}
.vw-thumb:hover{opacity:.8;transform:translateY(-2px)}
.vw-thumb[aria-current="true"]{opacity:1;border-color:var(--amber)}

.viewer__side{
  display:flex;flex-direction:column;align-items:flex-end;gap:14px;text-align:right;
}
.viewer__count{color:rgba(246,241,231,.55);white-space:nowrap}
.viewer__count b{color:#F6F1E7;font-weight:400}

/* the "next event" pill inverts .pill for the dark room */
.viewer__jump{border-color:rgba(246,241,231,.28);color:#EFE9DE;white-space:nowrap}
.viewer__jump::before{background:#EFE9DE}
.viewer__jump:hover span{color:var(--ink)}


/* ============================================================
   5 · THE FLIP FLYER
   A single cloned photograph that travels from the card's
   cropped frame to the viewer's full frame. The outer box
   carries the non-uniform scale (the crop opening up); the
   inner image counter-scales, so the picture never squashes —
   it un-crops. Both animations are transform-only.
   ============================================================ */

.flip{
  position:fixed;z-index:99;overflow:hidden;pointer-events:none;
  display:none;will-change:transform;background:var(--bone);
}
.flip img{
  display:block;width:100%;height:100%;object-fit:contain;
  will-change:transform,filter;
}


/* ============================================================
   6 · RESPONSIVE
   ============================================================ */

@media(max-width:1080px){
  .arch__grid{gap:40px 22px}
  .ev{grid-column:1/13}
  .ev:nth-child(3n){margin-top:0}
  .ev__frame{aspect-ratio:3/4}
  .ev--lead .ev__frame{aspect-ratio:4/3}
}

@media(max-width:760px){
  .mast__t{font-size:clamp(38px,11vw,64px);max-width:none}
  .mast__foot{flex-direction:column;align-items:flex-start}
  .ledger{gap:22px 30px}

  .viewer__ui{padding:12px 12px 14px;gap:10px}
  .viewer__head{padding-bottom:10px}
  .viewer__t{margin-top:6px}
  .viewer__x{width:38px;height:38px}
  /* thumbs and arrows both survive, but the arrows shrink and
     swipe becomes the primary gesture */
  .viewer__nav{width:38px;height:38px;margin-top:-19px}
  .viewer__foot{grid-template-columns:1fr;gap:12px}
  .viewer__side{
    flex-direction:row;align-items:center;justify-content:space-between;
    width:100%;text-align:left;
  }
  .viewer__cap{font-size:13px;margin-bottom:10px}
  .vw-thumb{width:54px;height:38px}
}


/* ============================================================
   7 · ACCESSIBILITY FLOOR
   tokens.css already flattens transitions under reduced
   motion; these rules stop the two transform-driven pieces
   from starting off-position when it does.
   ============================================================ */

@media(prefers-reduced-motion:reduce){
  .ev{opacity:1 !important;transform:none !important}
  .ev__img{transform:none !important}
  .viewer__head,.viewer__foot,.viewer__nav{opacity:1 !important;transform:none !important}
}