:root {
  --black: #030303;
  --white: #f4f4f1;
  --paper: #f8f8f4;
  --paper-soft: #efefea;
  --ink: #080808;
  --muted: rgba(244, 244, 241, 0.58);
  --muted-dark: rgba(8, 8, 8, 0.56);
  --line: rgba(244, 244, 241, 0.15);
  --line-strong: rgba(244, 244, 241, 0.22);
  --line-dark: rgba(8, 8, 8, 0.12);
  --ease: cubic-bezier(0.19, 1, 0.22, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--black);
  color: var(--white);
  font-family: "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  transition:
    background 700ms var(--ease),
    color 700ms var(--ease);
}

body.paper-mode {
  background: var(--paper);
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration: none;
}

.nav {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto 0;
  height: 72px;
  padding: 0 34px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  background: rgba(3, 3, 3, 0.66);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(24px);
  transition:
    background 500ms var(--ease),
    border-color 500ms var(--ease),
    color 500ms var(--ease);
}

body.paper-mode .nav {
  background: rgba(248, 248, 244, 0.82);
  border-bottom-color: var(--line-dark);
  color: var(--ink);
}

.brand {
  justify-self: start;
  font-size: 14px;
  font-weight: 760;
  letter-spacing: -0.015em;
}

.nav-spacer {
  justify-self: end;
}

.nav-links {
  justify-self: center;
  display: flex;
  gap: 54px;
  color: var(--white);
  font-size: 13px;
  font-weight: 820;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

body.paper-mode .nav-links {
  color: var(--ink);
}

.nav-links a {
  opacity: 0.96;
}

.nav-links a:hover {
  opacity: 0.62;
}

.cinematic-scroll {
  position: relative;
  height: 740vh;
}

.scene {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  isolation: isolate;
  --scene-tracer-core-color: #f7f7f2;
  --scene-tracer-glow-color: rgba(255, 255, 255, 0.22);
  --hud-tracer-core-color: #ffffff;
  --hud-tracer-glow-color: rgba(255, 255, 255, 0.28);
  color: var(--white);
  background:
    radial-gradient(circle at 50% 45%, rgba(255, 255, 255, 0.05), transparent 36%),
    linear-gradient(180deg, #070707 0%, #010101 100%);
  transition:
    background 900ms var(--ease),
    color 900ms var(--ease);
}

.scene.paper {
  --scene-tracer-core-color: #080808;
  --scene-tracer-glow-color: rgba(0, 0, 0, 0.1);
  color: var(--ink);
  background:
    radial-gradient(circle at 50% 42%, rgba(0, 0, 0, 0.032), transparent 38%),
    linear-gradient(180deg, #fbfbf8 0%, var(--paper-soft) 100%);
}

.white-wipe {
  position: absolute;
  z-index: 18;
  top: -12vh;
  right: -18vw;
  bottom: -12vh;
  left: 100%;
  opacity: 0;
  pointer-events: none;
  background: linear-gradient(180deg, #fbfbf8 0%, var(--paper-soft) 100%);
  box-shadow: -80px 0 180px rgba(255, 255, 255, 0.1);
  will-change: left, opacity;
}

.white-wipe::before {
  content: "";
  position: absolute;
  top: -8vh;
  bottom: -8vh;
  left: -24vw;
  width: 28vw;
  background: radial-gradient(circle at 82% 50%, rgba(255, 255, 255, 0) 0 40%, rgba(255, 255, 255, 0.82) 72%, #f8f8f4 100%);
  filter: blur(28px);
  opacity: var(--wipe-edge-opacity, 0);
}

.scene-grid {
  position: absolute;
  inset: -16vh -16vw;
  opacity: 0.14;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 82px 82px;
  mask-image: radial-gradient(circle at 50% 50%, black 0%, transparent 84%);
  will-change: transform;
  transition:
    background-image 900ms var(--ease),
    opacity 900ms var(--ease);
}

.scene.paper .scene-grid {
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px);
}

.corner-mark {
  position: absolute;
  z-index: 40;
  width: 34px;
  height: 34px;
  opacity: 0.72;
}

.corner-mark::before,
.corner-mark::after {
  content: "";
  position: absolute;
  background: currentColor;
}

.corner-mark::before {
  top: 16px;
  width: 34px;
  height: 1px;
}

.corner-mark::after {
  left: 16px;
  width: 1px;
  height: 34px;
}

.corner-mark-tl {
  top: 106px;
  left: 34px;
}

.corner-mark-tr {
  top: 106px;
  right: 34px;
}

.corner-mark-bl {
  bottom: 34px;
  left: 34px;
}

.corner-mark-br {
  right: 34px;
  bottom: 34px;
}

.scan-label {
  position: absolute;
  z-index: 36;
  top: 50%;
  color: currentColor;
  opacity: 0.46;
  font-size: 10px;
  font-weight: 820;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

.scan-label-left {
  left: 42px;
  transform: translateY(-50%) rotate(180deg);
}

.scan-label-right {
  right: 42px;
  transform: translateY(-50%);
}

.copy-stack {
  position: absolute;
  z-index: 32;
  inset: 0;
  pointer-events: none;
}

.copy-panel {
  position: absolute;
  left: 8.5vw;
  bottom: 10vh;
  max-width: 760px;
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 720ms var(--ease),
    transform 720ms var(--ease),
    filter 720ms var(--ease);
}

.copy-panel.active {
  opacity: 1;
  transform: translateY(0);
}

.copy-panel[data-copy="0"] {
  top: 13vh;
  left: 50%;
  bottom: auto;
  max-width: 980px;
  text-align: center;
  transform: translateX(-50%) translateY(26px);
}

.copy-panel[data-copy="0"].active {
  transform: translateX(-50%) translateY(0);
}

.copy-panel[data-copy="2"] {
  top: 28vh;
  right: 8.5vw;
  left: auto;
  bottom: auto;
  max-width: 620px;
  text-align: right;
}

.copy-panel[data-copy="2"] p {
  margin-left: auto;
}

.copy-panel[data-copy="3"] {
  top: 11.5vh;
  left: 50%;
  bottom: auto;
  max-width: 920px;
  text-align: center;
  transform: translateX(-50%) translateY(26px);
}

.copy-panel[data-copy="3"].active {
  transform: translateX(-50%) translateY(0);
}

.copy-panel[data-copy="3"] p {
  margin-left: auto;
  margin-right: auto;
}

.library-copy {
  z-index: 38;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 840;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: color 900ms var(--ease);
}

.scene.paper .eyebrow {
  color: var(--muted-dark);
}

h1,
h2 {
  margin: 0;
  font-weight: 620;
  line-height: 0.91;
  letter-spacing: -0.078em;
}

h1 {
  font-size: clamp(58px, 8.5vw, 138px);
}

h2 {
  max-width: 820px;
  font-size: clamp(46px, 6.6vw, 106px);
}

.copy-panel p:not(.eyebrow),
.waitlist p {
  max-width: 560px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(16px, 1.28vw, 20px);
  line-height: 1.58;
  transition: color 900ms var(--ease);
}

.scene.paper .copy-panel p:not(.eyebrow) {
  color: var(--muted-dark);
}

.copy-panel[data-copy="0"] p:not(.eyebrow) {
  margin-left: auto;
  margin-right: auto;
}

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

.phone-rig {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(334px, 34vw);
  aspect-ratio: 390 / 844;
  transform: translate(-50%, -47.5%) scale(0.96);
  transform-origin: 50% 49%;
  opacity: 1;
  filter:
    blur(9px)
    drop-shadow(0 44px 100px rgba(0, 0, 0, 0.72));
  will-change: transform, opacity, filter;
}

.phone-screen-mask {
  position: absolute;
  z-index: 1;
  top: 2.45%;
  left: 4.7%;
  width: 90.6%;
  height: 95.1%;
  overflow: hidden;
  border-radius: 12.1% / 5.6%;
  background: #000;
}

.hud-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  background-color: #000;
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}

.hud-unactive {
  background-image: url("assets/hud-unactive-capture.png");
  opacity: 1;
}

.hud-tracking {
  background-image: url("assets/hud-tracking-capture.png");
}

.hud-recording {
  background-image: url("assets/hud-trackrecord-capture.png");
}

.iphone-frame {
  position: absolute;
  z-index: 6;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

.tracer-style path {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
  shape-rendering: geometricPrecision;
}

.hud-tracer,
.world-tracer,
.copy-overlay-tracer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.hud-tracer {
  z-index: 5;
  opacity: 0;
}

.world-tracer {
  z-index: 24;
}

.copy-overlay-tracer {
  z-index: 35;
  pointer-events: none;
  mix-blend-mode: difference;
}

.tracer-glow {
  stroke: rgba(255, 255, 255, 0.22);
  stroke-width: 12;
  filter: blur(7px);
  opacity: 0;
}

.tracer-core {
  stroke: #f7f7f2;
  stroke-width: 4.4;
  filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.5));
  opacity: 0;
}

.hud-white.tracer-glow {
  stroke: rgba(255, 255, 255, 0.28);
}

.hud-white.tracer-core {
  stroke: #ffffff;
  filter: drop-shadow(0 0 9px rgba(255, 255, 255, 0.74));
}

.scene.paper .world-tracer .tracer-glow {
  stroke: rgba(0, 0, 0, 0.1);
}

.scene.paper .world-tracer .tracer-core {
  stroke: #080808;
  filter: none;
}

.golf-ball {
  position: absolute;
  z-index: 41;
  top: 50%;
  left: 50%;
  width: min(86px, 7.5vw);
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.24);
  filter:
    grayscale(1)
    contrast(1.08)
    blur(0)
    drop-shadow(0 22px 42px rgba(0, 0, 0, 0.3))
    drop-shadow(0 0 20px rgba(255, 255, 255, 0.08));
  user-select: none;
  -webkit-user-drag: none;
  will-change: transform, opacity, filter;
}

.golf-ball.behind-copy {
  z-index: 28;
  mix-blend-mode: normal;
}

.golf-ball.front-copy {
  z-index: 41;
  mix-blend-mode: difference;
}

.library-system {
  position: absolute;
  z-index: 37;
  bottom: 8vh;
  left: 50%;
  width: min(1020px, calc(100vw - 56px));
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  opacity: 0;
  transform: translate(calc(-50% + 180px), 56px);
  perspective: 1200px;
  will-change: transform, opacity;
}

.flip-card {
  min-height: 172px;
  opacity: 0;
  transform: translate3d(90px, 20px, 0);
  perspective: 1200px;
  will-change: transform, opacity;
}

.flip-inner {
  position: relative;
  width: 100%;
  height: 172px;
  transform-style: preserve-3d;
  transition: transform 760ms var(--ease);
}

.flip-card.is-flipped .flip-inner {
  transform: rotateX(-14deg) translateY(-6px);
}

.flip-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: 20px;
  border: 1px solid var(--line-dark);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.34)),
    linear-gradient(135deg, rgba(255, 255, 255, 0.28), transparent 65%);
  color: var(--ink);
  backdrop-filter: blur(18px);
  transition:
    opacity 760ms var(--ease),
    transform 760ms var(--ease);
}

.flip-face::before,
.flip-face::after {
  content: "";
  position: absolute;
  background: rgba(0, 0, 0, 0.12);
}

.flip-face::before {
  top: 18px;
  right: 18px;
  width: 18px;
  height: 1px;
}

.flip-face::after {
  top: 18px;
  right: 18px;
  width: 1px;
  height: 18px;
}

.flip-front {
  opacity: 1;
  transform: translateY(0);
}

.flip-back {
  opacity: 0;
  transform: translateY(14px);
}

.flip-card.is-flipped .flip-front {
  opacity: 0;
  transform: translateY(-12px);
}

.flip-card.is-flipped .flip-back {
  opacity: 1;
  transform: translateY(0);
}

.flip-face span {
  color: rgba(8, 8, 8, 0.56);
  font-size: 11px;
  font-weight: 840;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.flip-face strong {
  font-size: 27px;
  font-weight: 620;
  letter-spacing: -0.05em;
}

.waitlist {
  min-height: 92vh;
  padding: 170px 24px;
  display: grid;
  place-items: center;
  text-align: center;
  background:
    radial-gradient(circle at 50% 35%, rgba(255, 255, 255, 0.06), transparent 33%),
    #030303;
}

.waitlist h2 {
  max-width: 920px;
}

.waitlist p {
  margin-left: auto;
  margin-right: auto;
}

.waitlist-form {
  width: min(590px, 100%);
  margin-top: 34px;
  padding: 7px;
  display: flex;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.055);
}

.waitlist-form input {
  flex: 1;
  min-width: 0;
  padding: 17px 20px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--white);
  font-size: 15px;
}

.waitlist-form input::placeholder {
  color: rgba(255, 255, 255, 0.42);
}

.waitlist-form button {
  border: 0;
  border-radius: 999px;
  padding: 0 26px;
  background: var(--white);
  color: #030303;
  font-weight: 840;
  cursor: pointer;
}

.form-message {
  min-height: 24px;
  color: var(--muted);
}

@media (max-width: 1040px) {
  .library-system {
    width: min(820px, calc(100vw - 40px));
    grid-template-columns: repeat(2, minmax(0, 1fr));
    bottom: 7vh;
  }
}

@media (max-width: 820px) {
  .nav {
    padding: 0 20px;
    grid-template-columns: 1fr auto;
  }

  .nav-links,
  .scan-label,
  .nav-spacer {
    display: none;
  }

  .corner-mark-tl,
  .corner-mark-tr {
    top: 92px;
  }

  .corner-mark-tl,
  .corner-mark-bl {
    left: 22px;
  }

  .corner-mark-tr,
  .corner-mark-br {
    right: 22px;
  }

  .corner-mark-bl,
  .corner-mark-br {
    bottom: 22px;
  }

  .phone-rig {
    width: min(282px, 73vw);
  }

  .golf-ball {
    width: 60px;
  }

  .copy-panel,
  .copy-panel[data-copy="2"] {
    right: 22px;
    left: 22px;
    bottom: 8vh;
    max-width: none;
    text-align: left;
    transform: translateY(24px);
  }

  .copy-panel.active,
  .copy-panel[data-copy="2"].active {
    transform: translateY(0);
  }

  .copy-panel[data-copy="0"] {
    top: 11vh;
    right: 22px;
    left: 22px;
    bottom: auto;
    max-width: none;
    text-align: left;
    transform: translateY(24px);
  }

  .copy-panel[data-copy="0"].active {
    transform: translateY(0);
  }

  .copy-panel[data-copy="0"] p:not(.eyebrow),
  .copy-panel[data-copy="2"] p:not(.eyebrow),
  .copy-panel[data-copy="3"] p:not(.eyebrow) {
    margin-left: 0;
    margin-right: 0;
  }

  .copy-panel[data-copy="3"] {
    top: 11vh;
    right: 22px;
    left: 22px;
    bottom: auto;
    max-width: none;
    text-align: left;
    transform: translateY(24px);
  }

  .copy-panel[data-copy="3"].active {
    transform: translateY(0);
  }

  h1 {
    font-size: clamp(50px, 15vw, 76px);
  }

  h2 {
    font-size: clamp(42px, 12.5vw, 68px);
  }

  .library-system {
    top: auto;
    bottom: 6vh;
    width: min(680px, calc(100vw - 28px));
    gap: 12px;
  }

  .flip-card,
  .flip-inner {
    min-height: 120px;
    height: 120px;
  }

  .flip-face {
    padding: 16px;
    border-radius: 22px;
  }

  .flip-face strong {
    font-size: 22px;
  }

  .waitlist-form {
    border-radius: 28px;
    flex-direction: column;
  }

  .waitlist-form button {
    padding: 16px 20px;
  }
}