/* ==========================================================================
   Ishwar Jewellers — SECTION 02 · Signature Gold Necklace  (Phase-02, KF 02)
   --------------------------------------------------------------------------
   A pinned scroll-reveal: the environment + left editorial establish first,
   then the necklace emerges from CENTRE/BACK toward the viewer, driven
   continuously by scroll (--pn). A single controlled light sweep plays as it
   completes; the specifications reveal in coordination; the four detail cards
   flash in BOTTOM→TOP. The stage releases naturally after the settle.

   The bg + necklace live inside a fixed 16:9 ".gjn-scene" sized to cover the
   stage, so the necklace stays glued to its podium at every viewport aspect.
   ========================================================================== */

.gjn {
  --gjn-gold: #a9853c;
  --gjn-brown: #6b4d1e;
  --gjn-ink: #4a3a22;
  --gjn-body: #7a6a52;
  --gjn-ivory: #f6efe2;
  --gjn-travel: 165vh;
  position: relative;
  background: var(--gjn-ivory);
  font-family: "Jost", "Segoe UI", system-ui, sans-serif;
}

.gjn__track {
  position: relative;
  height: calc(100vh + var(--gjn-travel));
  height: calc(100svh + var(--gjn-travel));
}

.gjn__stage {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  background: var(--gjn-ivory);
}

/* soft seam from the About section above */
.gjn::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 64px;
  z-index: 5;
  pointer-events: none;
  background: linear-gradient(to bottom, #f6f0e3, rgba(246, 240, 227, 0));
}

/* ------------------------------------------------- fixed-aspect scene layer */
.gjn__view {
  position: absolute;
  inset: 0;
}

.gjn__scene {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: max(100vw, 177.78svh);      /* covers the stage at 1536:864 */
  aspect-ratio: 1536 / 864;
}

.gjn__scene > picture img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* necklace — emerges from centre/back, placement glued to the podium -------- */
.gjn__neck {
  position: absolute;
  left: 49.93%;
  top: 5.79%;
  width: 26.82%;
  margin: 0;
  z-index: 2;
}

.gjn__neck-move {
  transform: translate3d(-50%, calc((1 - var(--pn, 0)) * -9%), 0)
             scale(calc(0.5 + 0.5 * var(--pn, 0)));
  transform-origin: 50% 14%;
  /* fully opaque and sharp from its first frame - the emergence is scale +
     travel only (never a faint ghost that reads as blur) */
  opacity: 1;
  transition: transform 0.18s cubic-bezier(0.25, 0.6, 0.3, 1);
  will-change: transform;
}

.gjn__neck-breathe { position: relative; }

.gjn.is-settled .gjn__neck-breathe {
  animation: gjn-breathe 5.2s ease-in-out infinite;
}

@keyframes gjn-breathe {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.008) translateY(-0.35%); }
}

.gjn__neck img {
  width: 100%;
  height: auto;
  display: block;
  -webkit-user-drag: none;
}

/* the controlled light sweep, masked by the necklace's own alpha */
.gjn__sweep {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  mix-blend-mode: screen;
  -webkit-mask-image: url("../images/gjn-necklace.webp");
  mask-image: url("../images/gjn-necklace.webp");
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
}

.gjn__sweep i {
  position: absolute;
  top: -25%;
  bottom: -25%;
  left: -55%;
  width: 210%;
  transform: translate3d(26%, 0, 0);
  background: linear-gradient(104deg,
    rgba(255, 236, 190, 0) 37%,
    rgba(255, 236, 190, 0.2) 44.5%,
    rgba(255, 244, 214, 0.62) 48.6%,
    rgba(255, 255, 250, 0.95) 50%,
    rgba(255, 244, 214, 0.62) 51.4%,
    rgba(255, 236, 190, 0.2) 55.5%,
    rgba(255, 236, 190, 0) 63%);
  will-change: transform;
}

.gjn__neck.do-sweep .gjn__sweep { animation: gjn-sweep-fade 1.45s ease-out forwards; }
.gjn__neck.do-sweep .gjn__sweep i { animation: gjn-sweep-move 1.45s cubic-bezier(0.35, 0, 0.25, 1) forwards; }
.gjn__neck.do-sweep img { animation: gjn-lit 1.45s ease-out; }

@keyframes gjn-sweep-move {
  from { transform: translate3d(26%, 0, 0); }
  to   { transform: translate3d(-26%, 0, 0); }
}

@keyframes gjn-sweep-fade {
  0%   { opacity: 0; }
  15%  { opacity: 1; }
  80%  { opacity: 1; }
  100% { opacity: 0; }
}

@keyframes gjn-lit {
  0%, 100% { filter: brightness(1); }
  45%      { filter: brightness(1.07) saturate(1.05); }
}

/* soft contact shadow growing on the podium as the necklace arrives */
.gjn__shadow {
  position: absolute;
  left: 49.7%;
  top: 58.6%;
  width: calc(26% * (0.4 + 0.6 * var(--pn, 0)));
  height: 3%;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(122, 84, 40, 0.4), rgba(122, 84, 40, 0) 70%);
  opacity: calc(var(--pn, 0) * 0.75);
  z-index: 1;
}

/* --------------------------------------------------------- editorial (left) */
.gjn__copy {
  position: absolute;
  left: clamp(20px, 7.4vw, 130px);
  top: 6.8svh;
  width: clamp(240px, 25.5vw, 430px);
  z-index: 3;
}

.gjn__eyebrow {
  margin: 0 0 1vw;
  color: var(--gjn-gold);
  font-size: clamp(10px, 0.85vw, 14px);
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.gjn__title {
  margin: 0 0 1.2vw;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 600;
  font-size: clamp(30px, 3.5vw, 60px);
  line-height: 1.04;
  color: var(--gjn-brown);
}

.gjn__rule {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 1vw;
}

.gjn__rule i {
  flex: 0 0 clamp(70px, 9vw, 150px);
  height: 1px;
  background: linear-gradient(to right, rgba(169, 133, 60, 0.8), rgba(169, 133, 60, 0.15));
}

.gjn__rule::after {
  content: "";
  width: 5px;
  height: 5px;
  border: 1px solid var(--gjn-gold);
  transform: rotate(45deg);
  margin-left: -6px;
  background: transparent;
}

.gjn__sub {
  margin: 0 0 1.15vw;
  color: #967a3d;
  font-size: clamp(10px, 0.85vw, 14px);
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.gjn__desc {
  margin: 0 0 1.8vw;
  font-size: clamp(12.5px, 1vw, 17px);
  line-height: 1.6;
  color: var(--gjn-body);
}

.gjn__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.8vw;
  padding: clamp(10px, 0.95vw, 16px) clamp(18px, 1.8vw, 30px);
  border: 1px solid rgba(169, 133, 60, 0.75);
  color: var(--gjn-brown);
  background: rgba(255, 252, 244, 0.35);
  text-decoration: none;
  font-size: clamp(10px, 0.82vw, 13.5px);
  font-weight: 500;
  letter-spacing: 0.26em;
  text-indent: 0.06em;
  text-transform: uppercase;
  transition: background 0.35s ease, color 0.35s ease, border-color 0.35s ease;
}

.gjn__cta span { font-size: 1.3em; transition: transform 0.35s ease; }

.gjn__cta:hover,
.gjn__cta:focus-visible {
  background: var(--gjn-gold);
  border-color: var(--gjn-gold);
  color: #fffcf4;
}

.gjn__cta:hover span { transform: translateX(5px); }

/* ------------------------------------------------------ specifications (R) */
.gjn__specs {
  position: absolute;
  right: clamp(18px, 5.4vw, 96px);
  top: 6.8svh;
  width: clamp(230px, 19.5vw, 330px);
  z-index: 3;
}

.gjn__specs-title {
  margin: 0 0 1.2vw;
  color: #8a6f3a;
  font-size: clamp(10px, 0.85vw, 14px);
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.gjn__specs ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(10px, 1.15svh, 16px);
}

.gjn__specs li {
  display: flex;
  align-items: flex-start;
  gap: clamp(10px, 0.9vw, 16px);
}

.gjn__tile {
  flex: 0 0 clamp(38px, 3.3vw, 54px);
  height: clamp(38px, 3.3vw, 54px);
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: linear-gradient(to bottom, #fbf6ea, #f4ecda);
  border: 1px solid rgba(190, 154, 78, 0.45);
  box-shadow: 0 6px 14px rgba(150, 110, 50, 0.1);
}

.gjn__tile svg {
  width: 55%;
  height: 55%;
  stroke: #a8823f;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.gjn__specs h3 {
  margin: 0 0 2px;
  font-size: clamp(12.5px, 1vw, 16px);
  font-weight: 500;
  color: var(--gjn-ink);
}

.gjn__specs p {
  margin: 0;
  font-size: clamp(11px, 0.88vw, 14px);
  line-height: 1.4;
  color: #8a7758;
}

.gjn__legacy {
  margin: clamp(12px, 1.6svh, 22px) 0 0;
  padding-top: clamp(10px, 1.4svh, 18px);
  border-top: 1px solid rgba(169, 133, 60, 0.5);
  color: #8a6f3a;
  font-size: clamp(10px, 0.8vw, 13px);
  font-weight: 500;
  letter-spacing: 0.24em;
  line-height: 1.9;
  text-transform: uppercase;
}

/* ------------------------------------------------------------- scroll cue */
.gjn__cue {
  position: absolute;
  left: clamp(16px, 2.4vw, 40px);
  top: auto;
  bottom: 7svh;
  z-index: 3;
  color: #6b5936;
  text-align: left;
}

.gjn__cue-text {
  display: block;
  font-size: clamp(9px, 0.76vw, 12px);
  font-weight: 500;
  letter-spacing: 0.28em;
  line-height: 1.9;
  text-transform: uppercase;
  white-space: nowrap;
}

.gjn__cue-line {
  position: relative;
  display: block;
  width: 1px;
  height: clamp(56px, 9svh, 96px);
  margin: 10px auto 0;
  overflow: hidden;
  background: rgba(107, 89, 54, 0.3);
}

.gjn__cue-line::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 45%;
  background: rgba(107, 89, 54, 0.85);
  animation: gjn-drip 2s ease-in-out infinite;
}

@keyframes gjn-drip {
  from { transform: translateY(-100%); }
  to   { transform: translateY(240%); }
}

.gjn__cue-ring {
  display: block;
  width: 26px;
  height: 26px;
  margin: 8px auto 0;
  border: 1px solid rgba(107, 89, 54, 0.8);
  border-radius: 50%;
  position: relative;
}

.gjn__cue-ring::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 4px;
  height: 4px;
  margin: -2px 0 0 -2px;
  border-radius: 50%;
  background: #6b5936;
}

/* --------------------------------------------------------- detail cards */
.gjn__cards {
  position: absolute;
  left: 50%;
  bottom: 3svh;
  transform: translateX(-50%);
  width: min(78vw, 1240px);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(14px, 2.4vw, 40px);
  margin: 0;
  padding: 0;
  list-style: none;
  z-index: 3;
}

.gjn__cards figure { margin: 0; }

.gjn__cards .gjn__card-img {
  position: relative;
  aspect-ratio: 359 / 237;
  overflow: hidden;
  border-radius: 4px;
  box-shadow: 0 14px 30px rgba(140, 100, 45, 0.16);
}

.gjn__cards img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.gjn__cards figcaption { text-align: center; padding-top: clamp(8px, 1.3svh, 14px); }

.gjn__cards h3 {
  margin: 0 0 3px;
  font-size: clamp(10.5px, 0.85vw, 14px);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gjn-ink);
}

.gjn__cards p {
  margin: 0;
  font-size: clamp(10px, 0.8vw, 13px);
  line-height: 1.45;
  color: #8a7758;
}

/* quick elegant flash-in as each card arrives */
.gjn__cards li.is-past .gjn__card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(255, 250, 235, 0) 30%, rgba(255, 250, 235, 0.75) 50%, rgba(255, 250, 235, 0) 70%);
  transform: translateX(-110%);
  animation: gjn-card-flash 0.85s ease-out 0.15s both;
}

@keyframes gjn-card-flash {
  to { transform: translateX(110%); }
}

/* ------------------------------------------------------- "a closer look" */
.gjn__closer {
  position: absolute;
  right: clamp(10px, 2.2vw, 38px);
  bottom: 9svh;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  color: #8a6f3a;
}

.gjn__closer span {
  writing-mode: vertical-rl;
  font-size: clamp(9px, 0.76vw, 12px);
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.gjn__closer i {
  width: 30px;
  height: 30px;
  border: 1px solid rgba(138, 111, 58, 0.75);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-style: normal;
  font-size: 14px;
  animation: gjn-nudge 2.2s ease-in-out infinite;
}

@keyframes gjn-nudge {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(5px); }
}

/* --------------------------------------------------------- reveal states */
.js .gjn [data-at] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.85s cubic-bezier(0.22, 1, 0.36, 1);
}

.js .gjn [data-at].is-past {
  opacity: 1;
  transform: none;
}

.js .gjn .gjn__cards li[data-at] { transform: translateY(30px); transition-duration: 0.55s, 0.6s; }
.js .gjn__specs li[data-at] { transform: translateY(14px) translateX(10px); }

/* --------------------------------------------------------------- compact */
@media (max-width: 1023px) {
  .gjn__track { height: auto; }

  .gjn__stage {
    position: static;
    height: auto;
    overflow: visible;
    padding-bottom: 40px;
  }

  .gjn__view {
    position: relative;
    height: clamp(320px, 52svh, 520px);
    overflow: hidden;
  }

  .gjn__scene {
    width: max(100%, calc(clamp(320px, 52svh, 520px) * 1.7778));
    top: 50%;
  }

  .gjn__copy {
    position: relative;
    inset: auto;
    width: auto;
    padding: 46px clamp(20px, 6vw, 56px) 26px;
  }

  .gjn__eyebrow { font-size: 11px; margin-bottom: 10px; }
  .gjn__title { font-size: clamp(30px, 7.6vw, 44px); margin-bottom: 12px; }
  .gjn__rule { margin-bottom: 10px; }
  .gjn__rule i { flex-basis: 90px; }
  .gjn__sub { font-size: 11px; margin-bottom: 12px; }
  .gjn__desc { display: none; }
  .gjn__cta { padding: 12px 22px; font-size: 11px; gap: 8px; }

  .gjn__specs {
    position: relative;
    inset: auto;
    width: auto;
    padding: 30px clamp(20px, 6vw, 56px) 6px;
  }

  .gjn__specs-title { font-size: 11px; margin-bottom: 14px; }
  .gjn__specs ul { gap: 13px; }
  .gjn__tile { flex-basis: 46px; height: 46px; }
  .gjn__specs h3 { font-size: 14.5px; }
  .gjn__specs p { font-size: 12.5px; }
  .gjn__legacy { margin-top: 18px; padding-top: 14px; font-size: 11px; }

  .gjn__cards {
    position: relative;
    left: auto;
    bottom: auto;
    transform: none;
    width: auto;
    grid-template-columns: 1fr 1fr;
    gap: 18px 14px;
    padding: 26px clamp(20px, 6vw, 56px) 0;
  }

  .gjn__cards h3 { font-size: 11.5px; }
  .gjn__cards p { font-size: 11px; }

  .gjn__cue,
  .gjn__closer { display: none; }
}

@media (max-width: 519px) {
  .gjn__cards { grid-template-columns: 1fr 1fr; }
}

/* ------------------------------------------------------- reduced motion */
@media (prefers-reduced-motion: reduce) {
  .gjn__neck-move {
    transform: translateX(-50%) !important;
    opacity: 1 !important;
    transition: none;
  }

  .gjn.is-settled .gjn__neck-breathe,
  .gjn__cue-line::after,
  .gjn__closer i { animation: none; }

  .js .gjn [data-at] { transform: none; transition: opacity 0.6s ease; }
  .js .gjn__specs li[data-at],
  .js .gjn .gjn__cards li[data-at] { transform: none; }
  .gjn__cards li.is-past .gjn__card-img::after { animation: none; opacity: 0; }
}