/* Arth service pages: project carousel + project popup ([arth_service_projects]).
   4 cards per view on desktop, 3 on tablet, 2 on phones; native scroll-snap so touch swipes feel right.
   Popup: framed panel, name + image count, every image as a collage, one CTA in the footer. */

/* tighter rhythm around the work section */
body.arth-sp .e-con.sp-scope:has(+ .e-con.sp-gallery) { padding-bottom: clamp(40px, 5vw, 72px) !important; }
body.arth-sp .e-con.sp-gallery:has(.spw) { padding-bottom: clamp(48px, 6vw, 88px) !important; }
body.arth-sp .sp-gallery:has(.spw) .e-con.sp-gallery-head { margin-bottom: clamp(20px, 2.4vw, 32px); }

body.arth-sp .spw { --spw-gap: clamp(10px, 1.2vw, 18px); --spw-per: 4; position: relative; }
body.arth-sp .spw-track {
  display: grid; grid-auto-flow: column; list-style: none; margin: 0; padding: 0 var(--sp-gutter);
  grid-auto-columns: calc((100% - var(--spw-gap) * (var(--spw-per) - 1)) / var(--spw-per));
  gap: var(--spw-gap); overflow-x: auto; overscroll-behavior-x: contain; scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--sp-gutter); scrollbar-width: none; -webkit-overflow-scrolling: touch;
}
body.arth-sp .spw-track::-webkit-scrollbar { display: none; }
body.arth-sp .spw-card { list-style: none; margin: 0; min-width: 0; scroll-snap-align: start; }
body.arth-sp .spw-card::marker { content: none; }

/* card: full-bleed cover, name set over a soft navy fade, a quiet "View project" control that opens up on hover */
body.arth-sp .spw-open {
  position: relative; display: block; width: 100%; padding: 0; margin: 0; border: 0; border-radius: 0;
  background: var(--sp-surface); color: var(--sp-ivory); text-align: left; cursor: pointer; font: inherit; overflow: hidden;
}
body.arth-sp .spw-media { position: relative; display: block; overflow: hidden; aspect-ratio: 4 / 5; }
body.arth-sp .spw-media img {
  display: block; width: 100% !important; height: 100% !important; max-width: none !important; object-fit: cover;
  transition: transform 1.2s var(--sp-ease);
}
body.arth-sp .spw-media::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, rgba(2,28,66,0) 48%, rgba(2,28,66,.35) 70%, rgba(2,28,66,.82) 100%);
  transition: opacity .5s var(--sp-ease);
}
body.arth-sp .spw-cap {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 1; display: flex; align-items: flex-end; justify-content: space-between; gap: 12px;
  padding: clamp(14px, 1.4vw, 22px);
}
body.arth-sp .spw-name {
  font: 600 clamp(.8rem, .95vw, .95rem)/1.3 var(--sp-sans); letter-spacing: .1em; text-transform: uppercase; color: var(--sp-ivory);
  text-shadow: 0 1px 12px rgba(2,28,66,.35);
}
body.arth-sp .spw-go {
  flex: 0 0 auto; display: inline-flex; align-items: center; height: 38px; min-width: 38px; padding: 0 11px; box-sizing: border-box;
  border: 1px solid rgba(245,244,235,.7); border-radius: 999px; color: var(--sp-ivory); background: rgba(2,28,66,.15);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  transition: background-color .4s var(--sp-ease), color .4s var(--sp-ease), border-color .4s var(--sp-ease);
}
body.arth-sp .spw-go-t {
  max-width: 0; overflow: hidden; white-space: nowrap; opacity: 0;
  font: 600 .6rem/1 var(--sp-sans); letter-spacing: .16em; text-transform: uppercase;
  transition: max-width .5s var(--sp-ease), opacity .3s, margin .5s var(--sp-ease);
}
body.arth-sp .spw-go svg { width: 15px; height: 15px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.6; }
@media (hover: hover) {
  body.arth-sp .spw-open:hover .spw-media img { transform: scale(1.05); }
  body.arth-sp .spw-open:hover .spw-go { background: var(--sp-ivory); color: var(--sp-navy); border-color: var(--sp-ivory); }
  body.arth-sp .spw-open:hover .spw-go-t { max-width: 120px; opacity: 1; margin-right: 8px; }
}
body.arth-sp .spw-open:focus-visible { outline: 2px solid var(--sp-ochre); outline-offset: 3px; }

/* arrows + progress (shown by JS only when there is more to scroll) */
body.arth-sp .spw-nav { display: flex; align-items: center; gap: 18px; padding: clamp(18px, 2vw, 28px) var(--sp-gutter) 0; }
body.arth-sp .spw-nav[hidden] { display: none; }
body.arth-sp .spw-bar { flex: 1; height: 1px; background: var(--sp-line); position: relative; overflow: hidden; }
body.arth-sp .spw-bar span { position: absolute; inset: 0 auto 0 0; width: 25%; background: var(--sp-navy); transition: transform .3s var(--sp-ease), width .3s; }
body.arth-sp .spw-arrow {
  flex: 0 0 auto; display: grid; place-items: center; width: 44px; height: 44px; padding: 0; border-radius: 50%;
  border: 1px solid var(--sp-navy); background: transparent; color: var(--sp-navy); cursor: pointer;
  transition: background-color .3s var(--sp-ease), color .3s var(--sp-ease), opacity .3s;
}
body.arth-sp .spw-arrow svg, body.arth-sp .spw-x svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; }
body.arth-sp .spw-arrow:hover:not(:disabled) { background: var(--sp-navy); color: var(--sp-ivory); }
body.arth-sp .spw-arrow:disabled { opacity: .3; cursor: default; }
body.arth-sp .spw-arrow:focus-visible, body.arth-sp .spw-x:focus-visible { outline: 2px solid var(--sp-ochre); outline-offset: 3px; }

@media (max-width: 1024px) { body.arth-sp .spw { --spw-per: 3; } }
@media (max-width: 767px) {
  body.arth-sp .spw { --spw-per: 2; --spw-gap: 8px; }
  /* a sliver of the next card hints that the row scrolls */
  body.arth-sp .spw-track { grid-auto-columns: calc((100% - var(--spw-gap)) / 2 - 14px); }
  body.arth-sp .spw-cap { padding: 10px; flex-direction: column; align-items: flex-start; gap: 8px; }
  body.arth-sp .spw-name { font-size: .68rem; letter-spacing: .06em; }
  body.arth-sp .spw-go { height: 28px; min-width: 28px; padding: 0 9px; }
  body.arth-sp .spw-go-t { max-width: 100px; opacity: 1; margin-right: 6px; font-size: .5rem; letter-spacing: .12em; }
  body.arth-sp .spw-go svg { width: 12px; height: 12px; }
  body.arth-sp .spw-media::after { background: linear-gradient(180deg, rgba(2,28,66,0) 38%, rgba(2,28,66,.45) 64%, rgba(2,28,66,.86) 100%); }
  body.arth-sp .spw-arrow { width: 38px; height: 38px; }
}

/* ------------------------------------------------------------ popup */
body.arth-sp .spw-pop {
  position: fixed; inset: 0; z-index: 100000; box-sizing: border-box;
  width: min(1480px, calc(100vw - var(--sp-gutter) * 2)); height: calc(100dvh - clamp(48px, 9vh, 120px));
  max-width: none; max-height: none; margin: auto; padding: 0;
  border: 1px solid var(--sp-line); background: var(--sp-ivory); color: var(--sp-navy); font-family: var(--sp-sans);
  overflow: hidden; box-shadow: 0 30px 80px rgba(2, 28, 66, .25);
}
body.arth-sp .spw-pop:not([open]) { display: none; }
body.arth-sp .spw-pop::backdrop { background: rgba(2, 28, 66, .72); backdrop-filter: blur(6px); }
body.arth-sp .spw-pop[open] { display: flex; flex-direction: column; animation: spw-in .45s var(--sp-ease); }
@keyframes spw-in { from { opacity: 0; transform: translateY(14px); } }

body.arth-sp .spw-pop-head {
  flex: 0 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: clamp(16px, 2vw, 24px) clamp(18px, 2.4vw, 34px); border-bottom: 1px solid var(--sp-line);
}
body.arth-sp .spw-pop-id { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px 16px; min-width: 0; }
body.arth-sp .spw-pop-title { margin: 0; font: 600 clamp(.9rem, 1.2vw, 1.05rem)/1.2 var(--sp-sans); letter-spacing: .22em; text-transform: uppercase; color: var(--sp-berry); }
body.arth-sp .spw-pop-n { font: 500 .74rem/1 var(--sp-sans); letter-spacing: .14em; color: var(--sp-ink-60); }
body.arth-sp .spw-pop-n.is-line { font: 400 .9rem/1.45 var(--sp-sans); letter-spacing: .01em; color: var(--sp-ink-80); }
body.arth-sp .spw-pop { position: fixed; }
body.arth-sp .spw-x {
  flex: 0 0 auto; display: grid; place-items: center; width: 44px; height: 44px; padding: 0; border-radius: 0;
  border: 1px solid rgba(2, 28, 66, .3); background: transparent; color: var(--sp-navy); cursor: pointer; transition: border-color .3s, background-color .3s, color .3s;
}
body.arth-sp .spw-x:hover { border-color: var(--sp-navy); background: var(--sp-navy); color: var(--sp-ivory); }

/* collage: masonry columns, images keep their own proportions */
body.arth-sp .spw-pop-body {
  flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain;
  padding: clamp(16px, 2.2vw, 32px) clamp(18px, 2.4vw, 34px);
}
body.arth-sp .spw-collage { columns: 3; column-gap: clamp(10px, 1.1vw, 16px); margin: 0; padding: 0; list-style: none; }
body.arth-sp .spw-collage li {
  break-inside: avoid; margin: 0 0 clamp(10px, 1.1vw, 16px); list-style: none; overflow: hidden; background: var(--sp-surface);
  opacity: 0; transform: translateY(10px); animation: spw-tile .6s var(--sp-ease) forwards; animation-delay: calc(var(--k, 0) * 45ms);
}
@keyframes spw-tile { to { opacity: 1; transform: none; } }
body.arth-sp .spw-collage button { display: block; width: 100%; padding: 0; margin: 0; border: 0; border-radius: 0; background: none; cursor: zoom-in; }
body.arth-sp .spw-collage button:focus-visible { outline: 2px solid var(--sp-ochre); outline-offset: -2px; }
body.arth-sp .spw-collage img { display: block; width: 100%; height: auto; transition: transform 1.1s var(--sp-ease); }
@media (hover: hover) { body.arth-sp .spw-collage li:hover img { transform: scale(1.025); } }

body.arth-sp .spw-pop-foot {
  flex: 0 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: clamp(12px, 1.6vw, 18px) clamp(18px, 2.4vw, 34px); border-top: 1px solid var(--sp-line);
}
body.arth-sp .spw-pop-note { font: 500 .72rem/1.4 var(--sp-sans); letter-spacing: .1em; color: var(--sp-ink-60); }
body.arth-sp .spw-cta {
  display: inline-flex; align-items: center; gap: .7em; padding: 1.15em 1.8em; border-radius: 999px;
  border: 1px solid var(--sp-navy); background: var(--sp-navy); color: var(--sp-ivory); text-decoration: none; white-space: nowrap;
  font: 500 .72rem/1 var(--sp-sans); letter-spacing: .15em; text-transform: uppercase;
  transition: background-color .35s var(--sp-ease), border-color .35s var(--sp-ease);
}
body.arth-sp .spw-cta:hover { background: var(--sp-berry); border-color: var(--sp-berry); color: #fff; }
body.arth-sp .spw-cta:focus-visible { outline: 2px solid var(--sp-ochre); outline-offset: 3px; }
html.spw-lock, html.spw-lock body { overflow: hidden !important; }

@media (max-width: 1024px) { body.arth-sp .spw-collage { columns: 2; } }
@media (max-width: 767px) {
  body.arth-sp .spw-pop { width: 100vw; height: 100dvh; border: 0; }
  body.arth-sp .spw-collage { column-gap: 6px; }
  body.arth-sp .spw-collage li { margin-bottom: 6px; }
  body.arth-sp .spw-pop-body { padding: 12px; }
  body.arth-sp .spw-x { width: 40px; height: 40px; }
  body.arth-sp .spw-pop-note { display: none; }
  body.arth-sp .spw-pop-foot { justify-content: center; }
  body.arth-sp .spw-cta { width: 100%; justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
  body.arth-sp .spw-pop[open], body.arth-sp .spw-collage li { animation: none; opacity: 1; transform: none; }
  body.arth-sp .spw-media img, body.arth-sp .spw-go-t { transition: none; }
}

/* --------------------------------------------- single image view (inside the popup) */
body.arth-sp .spw-lb {
  position: absolute; inset: 0; z-index: 5; display: flex; align-items: center; justify-content: center;
  background: rgba(245, 244, 235, .98); animation: spw-fade .3s var(--sp-ease);
}
body.arth-sp .spw-lb[hidden] { display: none; }
@keyframes spw-fade { from { opacity: 0; } }
body.arth-sp .spw-lb-fig {
  margin: 0; width: 100%; height: 100%; box-sizing: border-box; display: flex; align-items: center; justify-content: center;
  padding: clamp(64px, 7vw, 84px) clamp(64px, 7vw, 100px) clamp(48px, 5vw, 64px);
}
/* original proportions, never upscaled past the file's own size */
body.arth-sp .spw-lb-fig img { display: block; width: auto; height: auto; max-width: 100%; max-height: 100%; object-fit: contain; box-shadow: 0 18px 50px rgba(2,28,66,.14); }
body.arth-sp .spw-lb-btn {
  position: absolute; display: grid; place-items: center; width: 44px; height: 44px; padding: 0; border-radius: 0;
  border: 1px solid rgba(2, 28, 66, .3); background: var(--sp-ivory); color: var(--sp-navy); cursor: pointer; transition: background-color .3s, color .3s, border-color .3s;
}
body.arth-sp .spw-lb-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; }
body.arth-sp .spw-lb-btn:hover:not(:disabled) { background: var(--sp-navy); color: var(--sp-ivory); border-color: var(--sp-navy); }
body.arth-sp .spw-lb-btn:disabled { opacity: .3; cursor: default; }
body.arth-sp .spw-lb-btn:focus-visible { outline: 2px solid var(--sp-ochre); outline-offset: 3px; }
body.arth-sp .spw-lb-back { top: clamp(14px, 1.6vw, 22px); left: clamp(18px, 2.4vw, 34px); width: auto; padding: 0 16px; gap: 8px; display: inline-flex; align-items: center; font: 600 .62rem/1 var(--sp-sans); letter-spacing: .16em; text-transform: uppercase; }
body.arth-sp .spw-lb-n { position: absolute; top: clamp(28px, 2.8vw, 36px); right: clamp(18px, 2.4vw, 34px); font: 600 .7rem/1 var(--sp-sans); letter-spacing: .16em; color: var(--sp-ink-60); font-variant-numeric: tabular-nums; }
body.arth-sp .spw-lb-prev { left: clamp(12px, 1.6vw, 28px); top: 50%; translate: 0 -50%; }
body.arth-sp .spw-lb-next { right: clamp(12px, 1.6vw, 28px); top: 50%; translate: 0 -50%; }
@media (max-width: 767px) {
  body.arth-sp .spw-lb-fig { padding: 64px 12px 72px; }
  body.arth-sp .spw-lb-prev, body.arth-sp .spw-lb-next { top: auto; bottom: 14px; translate: none; width: 40px; height: 40px; }
}

/* Marketing: tighter rhythm around the live feed and Our Work */
body.arth-sp--marketing .e-con.sp-scope:has(+ .e-con.sp-feed) { padding-bottom: clamp(40px, 5vw, 72px) !important; }
body.arth-sp--marketing .e-con.sp-feed { padding-bottom: clamp(40px, 5vw, 72px) !important; }
body.arth-sp--marketing .sp-feed + .e-con.sp-gallery { padding-top: 0 !important; }
body.arth-sp--marketing .e-con.sp-gallery:has(.spw) { padding-bottom: clamp(40px, 5vw, 72px) !important; }