/* ==========================================================================
   PIX — LANDING PAGE
   Scroll-driven showcase: a 3D phone spins 360° per section; app screens
   and headlines swap in sync. Headlines sit ABOVE the phone (never obscured).
   Lighting reacts to rotation via the --sheen custom property (set by JS,
   in degrees, so the "light source" stays world-fixed as the phone turns).
   Depends on tokens.css + base.css.
   ========================================================================== */

html { scroll-behavior: auto; }
body { overflow-x: hidden; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--gutter);
  transition: background var(--dur-slow) var(--ease), backdrop-filter var(--dur-slow) var(--ease);
}
.site-header.is-scrolled {
  background: rgba(22, 22, 22, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}
.site-logo img { height: 1.9rem; width: auto; display: block; }

/* ---------- Stage & sticky viewport ---------- */
.stage { position: relative; height: 1020vh; }
.viewport {
  position: sticky;
  top: 0;
  height: 100vh; height: 100svh;
  overflow: hidden;
}

.wash {
  position: absolute; inset: -20%;
  background:
    radial-gradient(42% 34% at 50% 52%, rgba(123,63,228,0.20) 0%, transparent 70%),
    radial-gradient(30% 24% at 50% 84%, rgba(42,26,94,0.35) 0%, transparent 75%);
  pointer-events: none;
}

.layer { position: absolute; inset: 0; pointer-events: none; }

/* ---------- Hero ---------- */
.hero-logo {
  position: absolute;
  top: clamp(4.5rem, 12vh, 9rem);
  left: 50%;
  transform: translateX(-50%);
  width: clamp(240px, 34vw, 520px);
  height: auto;
  filter: drop-shadow(0 18px 60px rgba(123,63,228,0.35));
}

/* ---------- Headlines (above the phone) ---------- */
.headline {
  position: absolute;
  top: clamp(4.5rem, 10vh, 8rem);
  left: 50%;
  width: 100%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: row;
  justify-content: center;
  gap: 0.32em;
  text-align: center;
  font-size: clamp(2.4rem, 5.8vw, 5.1rem);
  line-height: 0.95;
  opacity: 0;
  will-change: transform, opacity;
}
.headline span { display: block; white-space: nowrap; }

/* ---------- 3D phone scene ---------- */
.scene {
  position: absolute; inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1700px;
  pointer-events: none;
}
.floaty {
  margin-top: 11vh;
  transform-style: preserve-3d;
  animation: bob 7s var(--ease-in-out) infinite alternate;
}
@keyframes bob {
  from { transform: translateY(-9px) rotateX(1.4deg); }
  to   { transform: translateY(11px) rotateX(-1.4deg); }
}

.phone {
  /* Real iPhone 15 proportions: body 71.6×147.6mm (h/w 2.061), uniform
     3.25mm bezel → inner screen lands at 19.6:9, exactly matching the
     1206×2622 screenshots, so nothing gets cropped or distorted. */
  --ph: min(57vh, 600px);
  --pw: calc(var(--ph) * 0.485);
  --pr: calc(var(--ph) * 0.0645);
  --bezel: calc(var(--ph) * 0.022);
  --pt: 11px;            /* half thickness */
  --sheen: 135;          /* set by JS: world-fixed light direction (deg) */
  position: relative;
  width: var(--pw);
  height: var(--ph);
  transform-style: preserve-3d;
  will-change: transform;
}

.face {
  position: absolute; inset: 0;
  border-radius: var(--pr);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* --- Graphite rim (front + back) — light angle follows --sheen --- */
.face::before {
  content: '';
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 2px;
  background: linear-gradient(
    calc(var(--sheen) * 1deg),
    #4a4e4d 0%, #26292a 25%, #1a1c1d 42%,
    #6b7071 50%,
    #1a1c1d 58%, #26292a 75%, #4a4e4d 100%
  );
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask-composite: exclude;
  pointer-events: none;
  z-index: 3;
}

/* --- Front: uniform black bezel + screen --- */
.face.front {
  transform: translateZ(var(--pt));
  background: #010102;
  padding: var(--bezel);
}
.screen {
  position: relative;
  width: 100%; height: 100%;
  border-radius: calc(var(--pr) - var(--bezel));
  overflow: hidden;
  background: var(--pix-black);
  box-shadow: inset 0 0 14px rgba(0,0,0,0.45);
}
.app-screen {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
}
.app-screen.is-active { opacity: 1; }
.glare {
  position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 40%, rgba(255,255,255,0.13) 50%, transparent 60%);
  opacity: 0;
  will-change: opacity;
}
/* Dynamic Island at true iPhone proportions (125×37pt of 393×852) */
.island {
  position: absolute;
  top: calc(var(--bezel) + var(--ph) * 0.0129);
  left: 50%;
  transform: translateX(-50%);
  width: calc(var(--pw) * 0.318);
  height: calc(var(--ph) * 0.0434);
  background: #000;
  border-radius: var(--radius-pill);
}
.island::after {
  /* front camera glint */
  content: '';
  position: absolute;
  right: 9%;
  top: 50%;
  transform: translateY(-50%);
  width: 17%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 35%, #1e2733 0%, #05070c 65%);
}

/* --- Back: graphite glass + camera + brand --- */
.face.back {
  transform: rotateY(180deg) translateZ(var(--pt));
  background:
    radial-gradient(130% 100% at 30% 8%, #34383a 0%, #26292b 48%, #1c1f21 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.back-sheen {
  position: absolute; inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    calc(var(--sheen) * -1deg),
    transparent 30%, rgba(255,255,255,0.055) 48%, rgba(255,255,255,0.09) 52%, transparent 70%
  );
  pointer-events: none;
}
.back-brand {
  width: 34%;
  height: auto;
  opacity: 0.92;
  filter: drop-shadow(0 4px 14px rgba(0,0,0,0.5));
}
.cam {
  position: absolute;
  top: calc(var(--ph) * 0.026);
  left: calc(var(--ph) * 0.026);
  width: calc(var(--pw) * 0.40);
  height: calc(var(--pw) * 0.40);
  border-radius: calc(var(--pr) * 0.85);
  background: linear-gradient(145deg, #2c3032, #1a1d1f);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,0.07),
    0 4px 14px rgba(0,0,0,0.45);
}
.cam .lens {
  position: absolute;
  width: 44%; height: 44%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 30%, #2f3540 0%, #06080b 58%);
  box-shadow:
    inset 0 0 0 3px rgba(120,126,130,0.28),
    inset 0 0 0 6px rgba(0,0,0,0.85),
    inset 0 0 8px 4px rgba(0,0,0,0.7),
    0 0 5px rgba(0,0,0,0.6);
}
.cam .lens::after {
  content: '';
  position: absolute;
  top: 18%; left: 22%;
  width: 22%; height: 22%;
  border-radius: 50%;
  background: rgba(160,180,255,0.35);
  filter: blur(1px);
}
.cam .lens:nth-child(1) { top: 8%; left: 8%; }
.cam .lens:nth-child(2) { bottom: 8%; right: 8%; }
.cam .flash {
  position: absolute;
  top: 14%; right: 16%;
  width: 14%; height: 14%;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, #fdf3d8 0%, #a89a6e 70%, #4a4536 100%);
  opacity: 0.85;
}
.cam .mic {
  position: absolute;
  bottom: 16%; left: 16%;
  width: 7%; height: 7%;
  border-radius: 50%;
  background: #060608;
  box-shadow: inset 0 0 2px rgba(255,255,255,0.15);
}

/* --- Edge slices (device thickness) --- */
.edge, .edge i {
  position: absolute; inset: 0;
  border-radius: var(--pr);
  transform-style: preserve-3d;
}
.edge i {
  background: linear-gradient(calc(var(--sheen) * 1deg), #33373866, #202324 45%, #2c3031 55%, #1a1d1e);
  background-color: #232627;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03);
}
.edge i:nth-child(1)  { transform: translateZ(-10px); }
.edge i:nth-child(2)  { transform: translateZ(-8px); }
.edge i:nth-child(3)  { transform: translateZ(-6px); }
.edge i:nth-child(4)  { transform: translateZ(-4px); }
.edge i:nth-child(5)  { transform: translateZ(-2px); }
.edge i:nth-child(6)  { transform: translateZ(0); }
.edge i:nth-child(7)  { transform: translateZ(2px); }
.edge i:nth-child(8)  { transform: translateZ(4px); }
.edge i:nth-child(9)  { transform: translateZ(6px); }
.edge i:nth-child(10) { transform: translateZ(8px); }
.edge i:nth-child(11) { transform: translateZ(10px); }

/* --- Side buttons (visible while rotating) --- */
.sidebtn {
  position: absolute;
  width: calc(var(--pt) * 2);
  border-radius: 2px;
  background: linear-gradient(180deg, #3d4142, #242728 50%, #34383a);
  box-shadow: inset 0 0 1px rgba(255,255,255,0.18);
}
.sb-action { left: calc(var(--pt) * -1); top: 18%; height: 3.5%; transform: rotateY(90deg) translateZ(-1.5px); }
.sb-volup  { left: calc(var(--pt) * -1); top: 25%; height: 6.5%; transform: rotateY(90deg) translateZ(-1.5px); }
.sb-voldn  { left: calc(var(--pt) * -1); top: 33.5%; height: 6.5%; transform: rotateY(90deg) translateZ(-1.5px); }
.sb-power  { right: calc(var(--pt) * -1); top: 27%; height: 10%; transform: rotateY(90deg) translateZ(1.5px); }

/* Grounding shadow */
.phone-shadow {
  position: absolute;
  left: 50%; bottom: calc(-1 * min(8vh, 70px));
  transform: translateX(-50%);
  width: 44vh;
  max-width: 400px;
  height: 32px;
  border-radius: 50%;
  background: radial-gradient(50% 50% at 50% 50%, rgba(0,0,0,0.55) 0%, transparent 70%);
  filter: blur(6px);
}

/* ---------- Bottom dock ---------- */
.dock {
  position: absolute;
  left: 0; right: 0;
  bottom: max(4vh, 1.75rem);
  display: grid;
  place-items: center;
  z-index: 3;
}
.dock-item {
  grid-area: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  will-change: transform, opacity;
}
.dock-item.is-on { pointer-events: auto; }
.tagline {
  font-size: var(--fs-body-lg);
  color: var(--text-muted);
  text-align: center;
}
.tagline b { color: var(--text); font-weight: var(--fw-bold); }
.appstore-badge--big { transform: scale(1.15); transform-origin: center top; box-shadow: var(--glow-gold); }

/* ---------- Finale (phone spins away → full-screen CTA) ---------- */
.finale {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  text-align: center;
  padding-inline: var(--gutter);
  opacity: 0;
  transform: translateY(28px) scale(0.96);
  pointer-events: none;
  will-change: opacity, transform;
}
.finale.is-on { pointer-events: auto; }
.finale-kicker {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow);
  font-size: clamp(0.95rem, 1.8vw, 1.25rem);
  color: var(--pix-purple-soft);
}
.finale-title {
  font-family: var(--font-display);
  font-weight: var(--fw-black);
  text-transform: uppercase;
  line-height: 0.92;
  letter-spacing: var(--tracking-tight);
  font-size: clamp(3.2rem, 9vw, 8rem);
  margin-block: calc(-1 * var(--space-2)) var(--space-3);
}
.finale-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}
.finale .appstore-badge--big { transform: scale(1.25); margin-bottom: var(--space-2); }

/* ---------- Scroll hint ---------- */
.scroll-hint {
  position: absolute;
  right: max(3vw, 1.25rem);
  bottom: max(4.5vh, 2rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  font-size: 0.75rem;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--text-faint);
  transition: opacity var(--dur-slow) var(--ease);
}
.scroll-hint .chev {
  width: 1px; height: 34px;
  background: linear-gradient(to bottom, var(--text-faint), transparent);
  animation: drip 1.8s var(--ease-in-out) infinite;
}
@keyframes drip {
  0% { transform: scaleY(0); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: top; }
  56% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}
.scroll-hint.is-off { opacity: 0; }

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  border-top: 1px solid var(--border-subtle);
  background: var(--surface-bg);
  padding-block: var(--space-8);
}
.footer-inner {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  text-align: center;
}
.footer-brand { display: flex; flex-direction: column; align-items: center; gap: var(--space-4); }
.footer-mark { height: 2.4rem; width: auto; }
.footer-line { max-width: 42ch; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-6);
}
.footer-links a {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color var(--dur-base) var(--ease);
}
.footer-links a:hover { color: var(--text); }
.footer-legal { font-size: var(--fs-small); }

/* ---------- Mobile ---------- */
@media (max-width: 760px) {
  .phone { --ph: min(50svh, 520px); }
  .headline {
    top: 13svh;
    flex-direction: column;
    align-items: center;
    gap: 0;
    font-size: clamp(2.4rem, 12vw, 3.9rem);
  }
  .hero-logo {
    top: 12svh;
    width: clamp(180px, 52vw, 300px);
  }
  .scene { align-items: flex-end; }
  .floaty { margin-top: 0; margin-bottom: 20svh; }
  .dock { bottom: max(3svh, 1.25rem); }
  .tagline { font-size: 0.95rem; padding-inline: 1.5rem; }
  .scroll-hint { display: none; }
  .appstore-badge--big { transform: scale(1.05); }
  .finale { gap: var(--space-4); }
  .finale-title { font-size: clamp(2.9rem, 15vw, 4.5rem); }
  .finale .appstore-badge--big { transform: scale(1.08); }
}

/* Short desktop viewports: keep everything clear of each other */
@media (min-width: 761px) and (max-height: 760px) {
  .phone { --ph: 56vh; }
  .floaty { margin-top: 17vh; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .floaty { animation: none; }
  .scroll-hint .chev { animation: none; }
  .app-screen { transition: opacity 0s; }
}