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

:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

html {
  min-height: 100%;
  background: #fff;
}

body {
  min-height: 100vh;
  background: #fff;
  color: #111;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

body, button {
  font: 1rem/1.5 "-apple-system", BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

body.unlocked {
  background: #fff;
}

.scene {
  min-height: 100vh;
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0 24px;
  position: relative;
  scroll-snap-align: start;
  transition: opacity 1.4s ease, filter 1.4s ease;
}

.scene--unlock {
  padding-top: 20vh;
  padding-bottom: 20vh;
  z-index: 1;
}

body.ready-dark .scene {
  filter: brightness(0.92);
}

body.dimmed .scene {
  opacity: 0.08;
}

body {
  scroll-snap-type: y mandatory;
}

.scene--unlock::before {
  content: "";
  position: fixed;
  inset: 0;
  background: #fff;
  pointer-events: none;
  opacity: 1;
  transition: opacity 1.8s ease;
  z-index: -2;
}

body.unlocked .scene--unlock::before {
  background: url("images/forest.jpg") center center / cover no-repeat;
  opacity: 1;
}

body.unlocked .scene--unlock::after {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at top, rgba(255,255,255,0.72), rgba(255,255,255,0.24) 40%, rgba(255,255,255,0) 75%);
  pointer-events: none;
  z-index: -1;
}

.unlock-inner {
  width: min(480px, 100%);
  display: grid;
  gap: 28px;
  place-items: center;
  text-align: center;
}

.leaf-frame {
  position: relative;
  width: 172px;
  height: 172px;
  border-radius: 42px;
  background: rgba(0, 0, 0, 0.03);
  display: grid;
  place-items: center;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.08);
}

.leaf {
  font-size: clamp(5rem, 18vw, 8rem);
  filter: grayscale(100%);
  transition: transform 1.6s ease, filter 1.6s ease;
  will-change: transform, filter;
  animation: breathe 6s ease-in-out infinite;
}

.lock {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 44px;
  height: 52px;
  display: grid;
  place-items: center;
  opacity: 1;
  transition: opacity 1.4s ease, transform 1.4s ease;
}

.lock-shackle,
.lock-body {
  position: absolute;
  border-radius: 999px;
  border: 2px solid rgba(17, 17, 17, 0.8);
}

.lock-shackle {
  width: 26px;
  height: 24px;
  top: 0;
  border-bottom: none;
  border-left-color: transparent;
  border-right-color: transparent;
  transform: translateY(2px);
}

.lock-body {
  width: 34px;
  height: 28px;
  bottom: 0;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 10px;
}

.lock-hidden {
  opacity: 0;
  transform: translateY(24px) scale(0.9);
}

.hint,
.scroll-hint,
.earpods-text,
.fragment p,
.final-copy {
  letter-spacing: 0.08em;
}

.hint {
  color: rgba(17, 17, 17, 0.56);
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
}

.quote {
  max-width: 640px;
  color: #111;
  font-size: clamp(1.25rem, 3vw, 2.2rem);
  line-height: 1.4;
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 1.8s ease 0.2s, transform 1.8s ease 0.2s;
}

.quote.visible,
body.unlocked .quote {
  opacity: 1;
  transform: translateY(0);
}

.scroll-hint {
  margin-top: 48px;
  color: rgba(17, 17, 17, 0.42);
  font-size: 0.88rem;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 1.4s ease 0.3s, transform 1.4s ease 0.3s;
}

body.unlocked .scroll-hint,
.scroll-hint.visible {
  opacity: 1;
  transform: translateY(0);
}

.memory-grid {
  width: min(720px, 100%);
  display: grid;
  gap: 120px;
  padding: 20vh 0;
}

.fragment {
  position: relative;
  min-height: 65vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 0 24px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1.4s ease, transform 1.4s ease;
}

.fragment.visible {
  opacity: 1;
  transform: translateY(0);
}

.fragment p {
  font-size: clamp(1.1rem, 2.3vw, 1.5rem);
  max-width: 560px;
  line-height: 1.6;
  color: #111;
}

.fragment::after {
  content: attr(data-symbol);
  position: absolute;
  top: 12%;
  right: 8%;
  color: rgba(17, 17, 17, 0.12);
  font-size: 2.2rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.scene--earpods {
  padding-top: 24vh;
  padding-bottom: 20vh;
}

.earpods-area {
  display: grid;
  gap: 36px;
  place-items: center;
  text-align: center;
}

.earpods {
  display: flex;
  gap: 32px;
  align-items: flex-end;
  cursor: pointer;
  transition: transform 1.4s ease;
}

.earpods.active {
  transform: translateX(-8px) scale(0.98);
}

.pod {
  width: 46px;
  height: 82px;
  border-radius: 28px 28px 18px 18px;
  background: #f5f5f5;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.08);
  position: relative;
}

.pod::before {
  content: "";
  position: absolute;
  inset: 0 0 18px;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.45));
}

.pod--left {
  transform-origin: center bottom;
  transition: transform 1.4s ease;
}

.pod--right {
  transform-origin: center bottom;
  transition: transform 1.4s ease;
}

.earpods.active .pod--left {
  transform: translateX(-32px) rotate(-6deg);
}

.earpods.active .pod--right {
  transform: translateX(32px) rotate(6deg);
}

.earpods-text {
  max-width: 560px;
  color: rgba(17, 17, 17, 0.76);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.7;
}

.overlay {
  position: fixed;
  inset: 0;
  background: #111;
  opacity: 0;
  pointer-events: none;
  transition: opacity 1.4s ease;
  display: grid;
  place-items: center;
  z-index: 10;
}

.overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.final-copy {
  color: #fff;
  opacity: 0;
  transform: translateY(20px);
  max-width: 640px;
  text-align: center;
  font-size: clamp(0.85rem, 2vw, 1.1rem);
  line-height: 1.8;
  letter-spacing: 0.18em;
  transition: opacity 2.4s ease 1s, transform 2.4s ease 1s;
}

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

@keyframes breathe {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@media (max-width: 640px) {
  .scene {
    padding: 0 20px;
  }

  .memory-grid {
    gap: 88px;
  }

  .fragment::after {
    font-size: 1.8rem;
    top: 8%;
    right: 6%;
  }
}