/* ============================================================
   Pearl & Co. — the world of bubble tea
   Warm taro & cream clay. Fly-through scroll experience.
   ============================================================ */

:root {
  --cream:      #F5EDE0;
  --cream-2:    #EEE3D2;
  --cream-hi:   #FBF6EC;
  --taro:       #9B7EBD;
  --taro-deep:  #6E5691;
  --plum:       #3A2E48;
  --caramel:    #C88A5A;
  --matcha:     #8FB98A;
  --ink:        #2E2536;
  --ink-soft:   #6B6172;
  --accent:     #9B7EBD;

  --font-display: ui-rounded, "SF Pro Rounded", "Hiragino Maru Gothic ProN",
                  "Quicksand", "Segoe UI", system-ui, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               Helvetica, Arial, system-ui, sans-serif;
  --font-mono: "SF Mono", ui-monospace, "Cascadia Mono", Menlo, monospace;

  --edge: clamp(18px, 5vw, 64px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }

/* ----------------------------------------------------------------
   Atmospheric sky (fixed backdrop, parallax particles)
   ---------------------------------------------------------------- */
.sky { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }

.sky__grad {
  position: absolute; inset: -10%;
  background:
    linear-gradient(178deg,
      #ECE6F3 0%,
      #F1EAE0 34%,
      var(--cream) 62%,
      #F3E7D6 100%);
}
.sky__glow {
  position: absolute; inset: 0;
  background:
    radial-gradient(60% 42% at 74% 16%, rgba(155,126,189,.22), transparent 70%),
    radial-gradient(52% 40% at 20% 82%, rgba(143,185,138,.16), transparent 72%),
    radial-gradient(46% 34% at 50% 50%, rgba(255,246,236,.55), transparent 70%);
}
.sky__particles { position: absolute; inset: -6% -2%; will-change: transform; }
.sky__grain {
  position: absolute; inset: 0; opacity: .5; mix-blend-mode: soft-light;
  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='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

/* floating tea leaves + pearls */
.pt {
  position: absolute; top: 0; left: 0;
  width: 14px; height: 14px;
  transform: scale(var(--sc, 1));
  animation-name: drift; animation-timing-function: linear;
  animation-iteration-count: infinite;
  opacity: .0;
}
.pt::before { content: ""; position: absolute; inset: 0; }
.pt--pearl::before {
  border-radius: 50%;
  background: radial-gradient(circle at 34% 30%, #7a5a52, #2c1c22 78%);
  box-shadow: inset 0 0 3px rgba(0,0,0,.4);
}
.pt--leaf::before {
  border-radius: 0 60% 0 60%;
  background: linear-gradient(140deg, #a7c69f, #6f9e6a);
  transform: rotate(28deg);
}
.pt--ring::before {
  border-radius: 50%;
  background: transparent;
  border: 2px solid rgba(155,126,189,.5);
}
@keyframes drift {
  0%   { opacity: 0; transform: scale(var(--sc)) translate(0, 12vh) rotate(0deg); }
  12%  { opacity: .55; }
  88%  { opacity: .5; }
  100% { opacity: 0; transform: scale(var(--sc)) translate(4vw, -22vh) rotate(220deg); }
}

/* ----------------------------------------------------------------
   Top progress bar + chrome
   ---------------------------------------------------------------- */
.scrollbar {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 60;
  background: rgba(110,86,145,.12);
}
.scrollbar span {
  display: block; height: 100%; width: 100%; transform-origin: 0 50%;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--taro), var(--caramel));
}

.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: clamp(14px, 2.4vw, 26px) var(--edge);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand__mark {
  width: 26px; height: 30px; border-radius: 8px 8px 11px 11px;
  background: linear-gradient(160deg, var(--taro), var(--taro-deep));
  position: relative; box-shadow: 0 6px 14px rgba(110,86,145,.35);
}
.brand__mark::before { /* straw */
  content: ""; position: absolute; top: -6px; left: 50%; width: 5px; height: 16px;
  background: var(--caramel); border-radius: 3px; transform: translateX(-50%) rotate(12deg);
}
.brand__mark::after { /* pearls */
  content: ""; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%);
  width: 14px; height: 6px; border-radius: 4px;
  background:
    radial-gradient(circle at 3px 3px, #241820 2.4px, transparent 2.8px),
    radial-gradient(circle at 10px 3px, #241820 2.4px, transparent 2.8px);
}
.brand__name { font-family: var(--font-display); font-weight: 700; font-size: 1.12rem; letter-spacing: .2px; }

.topnav {
  display: flex; gap: 4px; padding: 5px;
  background: rgba(251,246,236,.6); backdrop-filter: blur(10px);
  border: 1px solid rgba(110,86,145,.12); border-radius: 999px;
}
.topnav__item {
  font: inherit; font-size: .82rem; color: var(--ink-soft);
  border: 0; background: transparent; cursor: pointer;
  padding: 7px 14px; border-radius: 999px; transition: color .25s, background .25s;
}
.topnav__item:hover { color: var(--ink); }
.topnav__item.is-active { color: #fff; background: var(--accent); }

.topcta {
  text-decoration: none; font-weight: 600; font-size: .9rem; color: #fff;
  background: var(--ink); padding: 10px 20px; border-radius: 999px;
  transition: transform .2s, background .25s; white-space: nowrap;
}
.topcta:hover { transform: translateY(-1px); background: var(--taro-deep); }

/* ----------------------------------------------------------------
   Camera stage + floating dioramas
   ---------------------------------------------------------------- */
.stage { position: fixed; inset: 0; z-index: 10; pointer-events: none; }

/* ---- video-scrub scenes (scrub.html) ---- */
.stage--video .scene {
  position: absolute; inset: 0; opacity: 0;
  will-change: opacity; overflow: hidden;
}
.scene__video, .scene__still {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: center 42%;
}
.scene__still { will-change: transform; }
/* once the clip is ready, hide the still underneath it */
.scene.has-clip .scene__still { opacity: 0; }
.scene__video { z-index: 1; }

.island {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  will-change: transform, opacity, filter;
  transform-origin: 50% 52%;
  opacity: 0;
}
.island__inner {
  position: relative;
  width: min(82vw, 1080px);
  display: grid; place-items: center;
}
.island__inner img {
  width: 100%; height: auto; max-height: 84vh; object-fit: contain;
  filter: drop-shadow(0 42px 34px rgba(58,46,72,.20));
}
.island.is-centered .island__inner { animation: bob 7s ease-in-out infinite; }
@keyframes bob { 0%,100% { transform: translateY(-.7%); } 50% { transform: translateY(.7%); } }

/* soft accent halo behind the centered island */
.island__plate {
  position: absolute; left: 50%; top: 54%; z-index: -1;
  width: 66%; height: 46%; transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 30%, transparent), transparent 78%);
  filter: blur(30px); opacity: 0; transition: opacity .6s;
}
.island.is-centered .island__plate { opacity: .85; }
.island.is-missing .island__inner {
  width: min(70vw, 620px); aspect-ratio: 3/2; border-radius: 24px;
  background: linear-gradient(150deg, color-mix(in srgb, var(--accent) 40%, var(--cream)), var(--cream));
  box-shadow: 0 42px 34px rgba(58,46,72,.16);
}

/* ----------------------------------------------------------------
   Pinned copy (crossfades with the centered district)
   ---------------------------------------------------------------- */
.copylayer { position: fixed; inset: 0; z-index: 20; pointer-events: none; }
.copylayer::before { /* left legibility scrim */
  content: ""; position: absolute; inset: 0; width: min(58vw, 780px);
  background: linear-gradient(90deg, rgba(245,237,224,.97) 0%, rgba(245,237,224,.82) 34%, rgba(245,237,224,.4) 62%, transparent 100%);
}

.copy {
  position: absolute; left: var(--edge); top: 50%;
  transform: translateY(-50%);
  width: min(42vw, 460px);
  opacity: 0; will-change: opacity, transform;
}
.copy__num {
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .12em;
  color: var(--ink-soft);
}
.copy__eyebrow {
  display: block; margin-top: 18px; font-family: var(--font-display); font-weight: 700;
  font-size: .8rem; letter-spacing: .16em; text-transform: uppercase; color: var(--accent);
}
.copy__title {
  font-family: var(--font-display); font-weight: 700; color: var(--ink);
  font-size: clamp(2rem, 4.4vw, 3.5rem); line-height: 1.02; margin-top: 12px;
  letter-spacing: -.01em;
  text-shadow: 0 2px 20px rgba(245,237,224,.7);
}
.copy__body {
  margin-top: 18px; font-size: clamp(1rem, 1.25vw, 1.14rem);
  line-height: 1.55; color: #574C63; max-width: 40ch;
  text-shadow: 0 1px 12px rgba(245,237,224,.9), 0 0 2px rgba(245,237,224,.9);
}
.copy__tags { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.copy__tags li {
  font-size: .82rem; font-weight: 600; color: var(--taro-deep);
  padding: 7px 14px; border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 14%, var(--cream-hi));
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}
.copy__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; pointer-events: auto; }
.btn {
  text-decoration: none; font-weight: 600; font-size: .95rem;
  padding: 13px 24px; border-radius: 999px; transition: transform .2s, box-shadow .25s, background .25s;
}
.btn--primary { color: #fff; background: var(--ink); box-shadow: 0 10px 24px rgba(46,37,54,.25); }
.btn--primary:hover { transform: translateY(-2px); background: var(--taro-deep); }
.btn--ghost { color: var(--ink); background: transparent; border: 1.5px solid color-mix(in srgb, var(--ink) 25%, transparent); }
.btn--ghost:hover { border-color: var(--ink); transform: translateY(-2px); }

/* ----------------------------------------------------------------
   Route rail (right side)
   ---------------------------------------------------------------- */
.route {
  position: fixed; right: clamp(14px, 2.4vw, 30px); top: 50%; z-index: 40;
  transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 22px;
  padding: 18px 10px;
}
.route::before {
  content: ""; position: absolute; left: 50%; top: 22px; bottom: 22px; width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(var(--taro), var(--caramel)); opacity: .28;
}
.route__dot {
  position: relative; border: 0; background: transparent; cursor: pointer;
  width: 14px; height: 14px; display: grid; place-items: center;
}
.route__dot i {
  width: 9px; height: 9px; border-radius: 50%;
  background: rgba(110,86,145,.3);
  outline: 0 solid transparent; transition: transform .3s, background .3s, box-shadow .3s;
}
.route__dot:hover i { transform: scale(1.25); background: var(--accent); }
.route__dot.is-active i {
  background: var(--accent); transform: scale(1.4);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 22%, transparent);
}
.route__label {
  position: absolute; right: 24px; top: 50%; transform: translateY(-50%) translateX(6px);
  white-space: nowrap; font-size: .78rem; font-weight: 600; color: var(--ink);
  background: rgba(251,246,236,.85); backdrop-filter: blur(6px);
  padding: 5px 11px; border-radius: 999px; opacity: 0; pointer-events: none;
  transition: opacity .25s, transform .25s;
  border: 1px solid rgba(110,86,145,.14);
}
.route__dot:hover .route__label,
.route__dot.is-active .route__label { opacity: 1; transform: translateY(-50%) translateX(0); }

/* ----------------------------------------------------------------
   Scroll hint
   ---------------------------------------------------------------- */
.hint {
  position: fixed; left: 50%; bottom: 26px; z-index: 30;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft);
  transition: opacity .3s;
}
.hint i {
  width: 22px; height: 34px; border-radius: 12px; border: 2px solid color-mix(in srgb, var(--ink) 28%, transparent);
  position: relative;
}
.hint i::after {
  content: ""; position: absolute; left: 50%; top: 7px; width: 4px; height: 7px; border-radius: 2px;
  background: var(--accent); transform: translateX(-50%);
  animation: wheel 1.7s ease-in-out infinite;
}
@keyframes wheel { 0% { opacity: 0; top: 6px; } 40% { opacity: 1; } 100% { opacity: 0; top: 17px; } }

/* ----------------------------------------------------------------
   Scroll track (drives everything) + a11y story
   ---------------------------------------------------------------- */
.track { position: relative; z-index: 1; width: 100%; pointer-events: none; }
.a11y {
  position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ----------------------------------------------------------------
   Responsive
   ---------------------------------------------------------------- */
@media (max-width: 860px) {
  .topnav { display: none; }
  .copylayer::before {
    width: 100%; height: 60%; top: auto; bottom: 0;
    background: linear-gradient(0deg, rgba(245,237,224,.96) 8%, rgba(245,237,224,.7) 46%, transparent 100%);
  }
  .copy {
    left: var(--edge); right: var(--edge); top: auto; bottom: clamp(64px, 14vh, 120px);
    transform: none; width: auto; max-width: 560px;
  }
  .copy__body { max-width: none; }
  .island__inner { width: 96vw; }
  .island__inner img { max-height: 60vh; }
  .route { gap: 16px; right: 8px; }
  .route__label { display: none; }
}
@media (max-width: 560px) {
  .topcta { padding: 9px 15px; font-size: .82rem; }
  .brand__name { font-size: 1rem; }
  .copy__title { font-size: clamp(1.8rem, 8vw, 2.5rem); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .island.is-centered .island__inner { animation: none; }
  .hint i::after { animation: none; }
  .pt { display: none; }
}