/* ==========================================================================
   Lens Stage — product.php only (Appily Seventythree / Aira)
   Independent of Frost Meridian gallery, Cobalt product stamp, Tilt Loom tiles,
   Seal Circuit, Route Canvas, and prior Appily product detail UIs.
   Metaphor: studio lens stage — film strip, viewport, aperture sizes, buy sheet.
   ========================================================================== */

:root {
  --ls-ink: #121212;
  --ls-slate: #2a2a2a;
  --ls-mist: #ebebed;
  --ls-paper: #f5f5f7;
  --ls-signal: #e63946;
  --ls-signal-deep: #c1121f;
  --ls-steel: #457b9d;
  --ls-steel-soft: #6a9bb8;
  --ls-mute: #5c5c66;
  --ls-line: rgba(18, 18, 18, 0.1);
  --ls-ok: #2a9d8f;
  --font-ls: "Archivo", system-ui, sans-serif;
  --font-ls-serif: "Spectral", Georgia, serif;
  --ls-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ls-snap: cubic-bezier(0.34, 1.5, 0.64, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body.ls-body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-ls);
  color: var(--ls-ink);
  background:
    radial-gradient(60% 45% at 100% 0%, rgba(230, 57, 70, 0.1), transparent 55%),
    radial-gradient(50% 40% at 0% 100%, rgba(69, 123, 157, 0.12), transparent 50%),
    linear-gradient(165deg, #d8d8dc 0%, var(--ls-mist) 40%, var(--ls-paper) 100%);
}
body.ls-body > main {
  display: block;
  margin: 0;
  padding: 0;
  max-width: none;
}

.ls-app {
  width: min(100% - 1.4rem, 70rem);
  margin: 0 auto;
  padding: 1.1rem 0 3.25rem;
}

.ls-escape {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.15rem;
}
.ls-escape__brand {
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ls-ink);
}
.ls-escape__brand span { color: var(--ls-signal); }
.ls-escape__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}
.ls-escape__links a {
  font-size: 0.74rem;
  font-weight: 650;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ls-mute);
  transition: color 0.25s var(--ls-ease);
}
.ls-escape__links a:hover { color: var(--ls-signal); }

.ls-crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.55rem;
  align-items: center;
  margin-bottom: 1.15rem;
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ls-mute);
}
.ls-crumb a {
  color: var(--ls-steel);
  text-decoration: none;
}
.ls-crumb a:hover { color: var(--ls-signal); }
.ls-crumb span[aria-hidden] { opacity: 0.45; }

/* Studio stage */
.ls-stage {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
@media (min-width: 960px) {
  .ls-stage {
    grid-template-columns: 4.25rem minmax(0, 1.15fr) minmax(17rem, 0.9fr);
    align-items: start;
    gap: 1.15rem;
  }
}

/* Vertical film strip */
.ls-film {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
  scroll-snap-type: x mandatory;
}
@media (min-width: 960px) {
  .ls-film {
    flex-direction: column;
    overflow-x: visible;
    overflow-y: auto;
    max-height: 28rem;
    scroll-snap-type: y mandatory;
    padding-bottom: 0;
  }
}
.ls-film__shot {
  flex: 0 0 auto;
  width: 4.25rem;
  height: 4.25rem;
  padding: 0;
  border: 1.5px solid var(--ls-line);
  background: #fff;
  cursor: pointer;
  overflow: hidden;
  scroll-snap-align: start;
  transition: border-color 0.3s var(--ls-ease), transform 0.35s var(--ls-snap), box-shadow 0.3s var(--ls-ease);
}
.ls-film__shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.45s var(--ls-ease);
}
.ls-film__shot:hover {
  transform: translateY(-2px);
  border-color: rgba(230, 57, 70, 0.45);
}
.ls-film__shot.is-active {
  border-color: var(--ls-ink);
  box-shadow: 0 0 0 2px var(--ls-signal);
}
.ls-film__shot.is-active img { transform: scale(1.08); }

/* Viewport lens */
.ls-viewport {
  position: relative;
  background: var(--ls-ink);
  overflow: hidden;
  min-height: 18rem;
  aspect-ratio: 4 / 5;
  max-height: 34rem;
}
@media (min-width: 700px) {
  .ls-viewport { aspect-ratio: 1 / 1; }
}
.ls-viewport__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform-origin: center;
  transition: transform 0.55s var(--ls-ease), object-position 0.45s var(--ls-ease);
}
.ls-viewport__ring {
  position: absolute;
  inset: 12%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s var(--ls-ease), inset 0.4s var(--ls-ease);
}
.ls-viewport.is-zoomed .ls-viewport__ring {
  opacity: 1;
  animation: ls-ring 2.4s ease-in-out infinite;
}
@keyframes ls-ring {
  0%, 100% { transform: scale(1); opacity: 0.35; }
  50% { transform: scale(1.04); opacity: 0.55; }
}
.ls-viewport__tag {
  position: absolute;
  left: 0.85rem;
  bottom: 0.85rem;
  z-index: 2;
  padding: 0.35rem 0.6rem;
  background: rgba(18, 18, 18, 0.82);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Buy sheet */
.ls-sheet {
  padding: 1.2rem 1.15rem 1.3rem;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--ls-line);
  position: relative;
}
.ls-sheet__kicker {
  margin: 0 0 0.35rem;
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ls-steel);
}
.ls-sheet h1 {
  margin: 0 0 0.75rem;
  font-family: var(--font-ls-serif);
  font-size: clamp(1.55rem, 3.2vw, 2.15rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.ls-flags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
}
.ls-flag {
  padding: 0.28rem 0.55rem;
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(18, 18, 18, 0.06);
  color: var(--ls-slate);
}
.ls-flag--sale {
  background: var(--ls-signal);
  color: #fff;
}
.ls-flag--ok {
  background: rgba(42, 157, 143, 0.15);
  color: var(--ls-ok);
}
.ls-flag--out {
  background: rgba(18, 18, 18, 0.12);
  color: var(--ls-mute);
}

.ls-price {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  margin-bottom: 0.85rem;
  font-family: var(--font-ls-serif);
}
.ls-price strong {
  font-size: 1.65rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.ls-price s {
  font-size: 1rem;
  color: var(--ls-mute);
}

.ls-copy {
  margin: 0 0 1rem;
  font-size: 0.98rem;
  line-height: 1.5;
  color: var(--ls-mute);
}

.ls-alert {
  margin-bottom: 0.85rem;
  padding: 0.7rem 0.85rem;
  border-left: 3px solid var(--ls-signal);
  background: rgba(230, 57, 70, 0.1);
  font-size: 0.88rem;
  color: #9b2226;
}

/* Aperture size dials */
.ls-aperture {
  margin-bottom: 1rem;
}
.ls-aperture legend {
  margin: 0 0 0.55rem;
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ls-mute);
  padding: 0;
}
.ls-aperture__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.ls-iris {
  position: relative;
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 50%;
  border: 2px solid var(--ls-line);
  background:
    radial-gradient(circle at center, transparent 28%, rgba(18, 18, 18, 0.06) 29% 42%, transparent 43%),
    #fff;
  font-family: var(--font-ls);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.02em;
  color: var(--ls-mute);
  cursor: pointer;
  transition: border-color 0.3s var(--ls-ease), color 0.3s var(--ls-ease), transform 0.35s var(--ls-snap), box-shadow 0.3s var(--ls-ease), background 0.3s var(--ls-ease);
}
.ls-iris:hover {
  transform: scale(1.06);
  border-color: rgba(69, 123, 157, 0.5);
  color: var(--ls-ink);
}
.ls-iris.is-active {
  border-color: var(--ls-ink);
  color: var(--ls-ink);
  background:
    radial-gradient(circle at center, var(--ls-signal) 0 22%, transparent 23% 34%, rgba(18, 18, 18, 0.08) 35% 48%, transparent 49%),
    #fff;
  box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.15);
}

.ls-qty {
  margin-bottom: 1rem;
}
.ls-qty label {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ls-mute);
}
.ls-stepper {
  display: inline-grid;
  grid-template-columns: 2.5rem 3rem 2.5rem;
  border: 1.5px solid var(--ls-line);
  background: #fff;
}
.ls-stepper button {
  border: 0;
  background: transparent;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ls-ink);
  cursor: pointer;
  transition: background 0.25s var(--ls-ease), color 0.25s var(--ls-ease);
}
.ls-stepper button:hover {
  background: var(--ls-ink);
  color: #fff;
}
.ls-stepper input {
  width: 100%;
  border: 0;
  border-left: 1px solid var(--ls-line);
  border-right: 1px solid var(--ls-line);
  text-align: center;
  font-family: var(--font-ls);
  font-size: 0.95rem;
  font-weight: 700;
  background: transparent;
  -moz-appearance: textfield;
}
.ls-stepper input::-webkit-outer-spin-button,
.ls-stepper input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.ls-stepper input:focus {
  outline: none;
  background: rgba(230, 57, 70, 0.06);
}

.ls-actions {
  display: grid;
  gap: 0.45rem;
}
.ls-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.6rem 1.1rem;
  border: 1.5px solid transparent;
  font-family: var(--font-ls);
  font-size: 0.74rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.3s var(--ls-ease), background 0.3s var(--ls-ease), color 0.3s var(--ls-ease), border-color 0.3s var(--ls-ease), opacity 0.25s var(--ls-ease);
}
.ls-btn:hover { transform: translateY(-2px); }
.ls-btn--signal {
  background: var(--ls-signal);
  color: #fff;
}
.ls-btn--signal:hover { background: var(--ls-signal-deep); }
.ls-btn--ink {
  background: var(--ls-ink);
  color: #fff;
}
.ls-btn--ghost {
  background: transparent;
  color: var(--ls-ink);
  border-color: rgba(18, 18, 18, 0.22);
}
.ls-btn--ghost:hover {
  background: var(--ls-ink);
  color: #fff;
}
.ls-btn.is-disabled,
.ls-btn:disabled {
  opacity: 0.45;
  pointer-events: none;
  transform: none;
}
.ls-pay-note {
  margin: 0.75rem 0 0;
  font-size: 0.8rem;
  color: var(--ls-mute);
}

/* Spec dossier */
.ls-dossier {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}
@media (min-width: 800px) {
  .ls-dossier { grid-template-columns: 1.1fr 0.9fr; }
}
.ls-panel {
  padding: 1.15rem 1.15rem 1.25rem;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--ls-line);
}
.ls-panel h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-ls-serif);
  font-size: 1.25rem;
  font-weight: 600;
}
.ls-specs {
  margin: 0;
  display: grid;
  gap: 0;
}
.ls-specs div {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--ls-line);
  font-size: 0.9rem;
  transition: background 0.25s var(--ls-ease), padding-left 0.3s var(--ls-ease);
}
.ls-specs div:hover {
  background: rgba(69, 123, 157, 0.06);
  padding-left: 0.35rem;
}
.ls-specs dt {
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ls-mute);
  align-self: center;
}
.ls-specs dd { margin: 0; font-weight: 650; }

.ls-notes {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--ls-mute);
}
.ls-notes li { margin-bottom: 0.45rem; }
.ls-notes strong { color: var(--ls-ink); }

.ls-beats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}
.ls-beat {
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 0.65rem;
  padding: 0.65rem 0.7rem;
  background: rgba(18, 18, 18, 0.03);
  transition: transform 0.3s var(--ls-ease), background 0.3s var(--ls-ease);
}
.ls-beat:hover {
  transform: translateX(3px);
  background: rgba(230, 57, 70, 0.06);
}
.ls-beat__n {
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  color: var(--ls-signal);
}
.ls-beat strong {
  display: block;
  font-size: 0.88rem;
  margin-bottom: 0.15rem;
}
.ls-beat p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ls-mute);
  line-height: 1.4;
}

/* Related strip */
.ls-related {
  margin-top: 0.5rem;
}
.ls-related__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: end;
  margin-bottom: 0.85rem;
}
.ls-related__head h2 {
  margin: 0;
  font-family: var(--font-ls-serif);
  font-size: 1.35rem;
  font-weight: 600;
}
.ls-related__head p {
  margin: 0 0 0.25rem;
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ls-steel);
}
.ls-related__head a {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ls-signal);
}
.ls-related__rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(11rem, 14rem);
  gap: 0.65rem;
  overflow-x: auto;
  padding-bottom: 0.35rem;
  scroll-snap-type: x mandatory;
}
.ls-card {
  scroll-snap-align: start;
  display: grid;
  text-decoration: none;
  color: inherit;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--ls-line);
  overflow: hidden;
  transition: transform 0.35s var(--ls-ease), border-color 0.3s var(--ls-ease);
}
.ls-card:hover {
  transform: translateY(-4px);
  border-color: rgba(230, 57, 70, 0.4);
}
.ls-card__img {
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--ls-mist);
}
.ls-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.55s var(--ls-ease);
}
.ls-card:hover .ls-card__img img { transform: scale(1.06); }
.ls-card__body {
  padding: 0.7rem 0.75rem 0.85rem;
}
.ls-card__title {
  display: block;
  font-family: var(--font-ls-serif);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 0.25rem;
}
.ls-card__price {
  font-size: 0.82rem;
  font-weight: 750;
  color: var(--ls-steel);
}

.ls-miss {
  max-width: 32rem;
  margin: 2rem auto;
  padding: 1.75rem 1.35rem;
  text-align: center;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--ls-line);
}
.ls-miss h1 {
  margin: 0 0 0.45rem;
  font-family: var(--font-ls-serif);
  font-size: 1.75rem;
}
.ls-miss p {
  margin: 0 0 1.15rem;
  color: var(--ls-mute);
  line-height: 1.45;
}
.ls-miss__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  justify-content: center;
}

.ls-foot {
  margin-top: 2rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--ls-line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--ls-mute);
}
.ls-foot a {
  color: var(--ls-steel);
  font-weight: 650;
  text-decoration: none;
}
.ls-foot a:hover { color: var(--ls-signal); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
}