@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;1,400;1,500&family=Nunito+Sans:wght@300;400;700;800&display=swap');

:root {
  color-scheme: light;
  --rose-mist: oklch(94% 0.026 13);
  --blush: oklch(88% 0.055 15);
  --paper: oklch(98% 0.012 70);
  --paper-deep: oklch(93% 0.021 62);
  --petal: oklch(73% 0.13 18);
  --petal-deep: oklch(55% 0.16 22);
  --wine: oklch(35% 0.12 18);
  --wine-soft: oklch(45% 0.105 20);
  --leaf: oklch(52% 0.095 144);
  --leaf-dark: oklch(36% 0.075 146);
  --ink: oklch(23% 0.035 24);
  --muted: oklch(48% 0.035 24);
  --shadow: 0 24px 70px oklch(45% 0.11 18 / 18%);
  --soft-shadow: 0 14px 36px oklch(45% 0.09 18 / 13%);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--rose-mist);
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 12%, oklch(96% 0.046 30 / 72%), transparent 28rem),
    linear-gradient(145deg, oklch(96% 0.021 39), var(--rose-mist) 46%, oklch(93% 0.04 9));
  font-family: "Nunito Sans", "Segoe UI", system-ui, sans-serif;
  font-weight: 400;
}

button,
input,
textarea {
  font: inherit;
}

button {
  -webkit-tap-highlight-color: transparent;
}

/* Corações flutuantes de fundo */
.charms-layer {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  overflow: hidden;
}

.float-charm {
  position: absolute;
  bottom: -3rem;
  width: var(--size, 1rem);
  height: var(--size, 1rem);
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  opacity: 0;
  pointer-events: auto;
  transform-origin: 50% 55%;
  animation: floatCharm var(--duration, 14s) var(--delay, 0s) ease-in-out infinite;
  filter: drop-shadow(0 0.3rem 0.75rem oklch(35% 0.12 18 / 12%));
  transition: filter 260ms var(--ease), opacity 260ms var(--ease);
}

.float-charm:hover {
  filter: drop-shadow(0 0 0.85rem oklch(73% 0.13 18 / 48%));
}

.float-charm.is-touched {
  pointer-events: none;
}

.float-charm:hover .charm-shape {
  animation: charmJelly 760ms cubic-bezier(0.16, 1, 0.3, 1) infinite;
}

.float-charm.is-touched .charm-shape {
  animation: charmTouch 760ms var(--ease) forwards;
}

.charm-shape {
  position: absolute;
  inset: 0;
  display: block;
  transform-origin: 50% 55%;
  animation: charmBreath 3400ms ease-in-out infinite;
  transition: transform 260ms var(--ease);
  will-change: transform;
}

.heart-charm .charm-shape::before,
.heart-charm .charm-shape::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: var(--petal);
  border-radius: 50% 50% 0 0;
}

.heart-charm .charm-shape::before {
  left: 0;
  transform-origin: 100% 100%;
  transform: rotate(-45deg);
}

.heart-charm .charm-shape::after {
  left: 50%;
  transform-origin: 0 100%;
  transform: rotate(45deg);
}

.flower-charm {
  border-radius: 999px;
}

.flower-charm .charm-shape::before,
.flower-charm .charm-shape::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 100% 0 100% 0;
  background: oklch(84% 0.07 26);
  box-shadow:
    0 0 0 0.03rem oklch(55% 0.16 22 / 14%),
    inset 0 -0.14rem 0 oklch(55% 0.16 22 / 14%);
}

.flower-charm .charm-shape::before {
  transform: rotate(0deg);
}

.flower-charm .charm-shape::after {
  transform: rotate(82deg);
}

.flower-charm .charm-shape {
  background:
    radial-gradient(circle at 50% 50%, oklch(92% 0.07 70) 0 20%, transparent 21%),
    radial-gradient(circle at 50% 50%, var(--petal) 0 42%, transparent 43%);
}

@keyframes floatCharm {
  0% {
    opacity: 0;
    transform: translate3d(0, 0, 0) scale(0.9) rotate(var(--r0, -15deg));
  }
  8% {
    opacity: var(--max-opacity, 0.58);
  }
  48% {
    transform: translate3d(var(--sway, 2rem), calc(-50vh - 1rem), 0) scale(1) rotate(8deg);
  }
  92% {
    opacity: var(--max-opacity, 0.58);
  }
  100% {
    opacity: 0;
    transform: translate3d(var(--drift, 0), calc(-100vh - 6rem), 0) scale(0.82) rotate(var(--r1, 20deg));
  }
}

@keyframes charmBreath {
  0%, 100% {
    transform: scale(1, 1) rotate(0deg);
  }
  45% {
    transform: scale(1.08, 0.94) rotate(3deg);
  }
  70% {
    transform: scale(0.97, 1.06) rotate(-2deg);
  }
}

@keyframes charmJelly {
  0%, 100% {
    transform: scale(1, 1) rotate(0deg);
  }
  18% {
    transform: scale(1.34, 0.74) rotate(10deg);
  }
  34% {
    transform: scale(0.78, 1.28) rotate(-9deg);
  }
  52% {
    transform: scale(1.18, 0.88) rotate(6deg);
  }
  70% {
    transform: scale(0.94, 1.1) rotate(-4deg);
  }
  86% {
    transform: scale(1.05, 0.98) rotate(2deg);
  }
}

@keyframes charmTouch {
  0% {
    opacity: 1;
    transform: scale(1) rotate(0deg);
  }
  100% {
    opacity: 0;
    transform: scale(1.85) rotate(115deg);
  }
}

.ambient {
  position: fixed;
  z-index: 0;
  pointer-events: none;
  border-radius: 999px;
  filter: blur(1px);
  opacity: 0.38;
}

.ambient-one {
  width: 18rem;
  height: 18rem;
  left: -7rem;
  bottom: 7rem;
  background: radial-gradient(circle, oklch(79% 0.11 19 / 42%), transparent 68%);
}

.ambient-two {
  width: 15rem;
  height: 15rem;
  right: -6rem;
  top: 6rem;
  background: radial-gradient(circle, oklch(82% 0.075 70 / 36%), transparent 70%);
}

.app {
  position: relative;
  z-index: 1;
  width: min(100%, 31rem);
  min-height: 100svh;
  margin: 0 auto;
  padding: max(1rem, env(safe-area-inset-top)) 1rem max(1.2rem, env(safe-area-inset-bottom));
  isolation: isolate;
}

.step-indicator {
  position: fixed;
  z-index: 30;
  top: max(0.75rem, env(safe-area-inset-top));
  left: 50%;
  display: flex;
  gap: 0.55rem;
  transform: translateX(-50%);
  padding: 0.45rem 0.6rem;
  border: 1px solid oklch(100% 0.008 70 / 58%);
  border-radius: 999px;
  background: oklch(98% 0.012 70 / 82%);
  box-shadow: 0 10px 28px oklch(42% 0.09 18 / 12%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.step-dot {
  width: 0.58rem;
  height: 0.58rem;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: oklch(62% 0.06 18 / 34%);
  cursor: pointer;
  transition: width 320ms var(--ease), background-color 320ms var(--ease), transform 240ms var(--ease);
}

.step-dot.is-active {
  width: 1.45rem;
  background: var(--wine);
}

.step-dot:hover:not(.is-active) {
  transform: scale(1.35);
  background: oklch(62% 0.06 18 / 55%);
}

.audio-toggle {
  position: fixed;
  z-index: 35;
  right: max(0.85rem, env(safe-area-inset-right));
  bottom: max(0.85rem, env(safe-area-inset-bottom));
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.75rem;
  padding: 0 0.9rem;
  border: 1px solid oklch(100% 0.008 70 / 62%);
  border-radius: 999px;
  color: var(--wine);
  background: oklch(98% 0.012 70 / 86%);
  box-shadow: var(--soft-shadow);
  cursor: pointer;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 260ms var(--ease), box-shadow 260ms var(--ease);
}

.audio-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 50px oklch(45% 0.09 18 / 20%);
}

.audio-icon {
  width: 0.82rem;
  height: 0.82rem;
  border-radius: 999px;
  background: var(--petal);
  box-shadow: 0 0 0 0.28rem oklch(73% 0.13 18 / 18%);
  transition: background-color 300ms var(--ease);
}

.audio-toggle[aria-pressed="true"] .audio-icon {
  background: var(--leaf);
  animation: pulse 1300ms var(--ease) infinite;
}

/* Cenas */

.scene {
  position: absolute;
  inset: 0 1rem auto;
  display: grid;
  min-height: 100svh;
  align-content: center;
  gap: clamp(1.15rem, 4.5vh, 2.4rem);
  padding: 4.6rem 0 5.6rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(1.8rem) scale(0.982);
  transition: opacity 560ms var(--ease), transform 560ms var(--ease), visibility 560ms var(--ease);
  content-visibility: auto;
}

.scene.is-active {
  position: relative;
  inset: auto;
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

/* Stagger de entrada do conteúdo por cena */

.scene.is-active .scene-copy {
  animation: contentEnter 640ms var(--ease) 40ms both;
}

.scene-memories.is-active .memory-shell {
  animation: contentEnter 640ms var(--ease) 100ms both;
}

.scene-memories.is-active .memory-caption {
  animation: contentEnter 640ms var(--ease) 160ms both;
}

.scene.is-active:not(.scene-bouquet) .primary-action {
  animation: contentEnter 640ms var(--ease) 200ms both;
}

.scene-letter.is-active .envelope-stage {
  animation: contentEnter 640ms var(--ease) 100ms both;
}

@keyframes contentEnter {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Texto */

.scene-copy {
  display: grid;
  gap: 0.65rem;
}

.eyebrow {
  margin: 0;
  color: var(--wine-soft);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2 {
  max-width: 11ch;
  margin: 0;
  color: var(--wine);
  font-family: "Playfair Display", Georgia, "Times New Roman", serif;
  font-size: 3.25rem;
  font-weight: 500;
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  max-width: 12ch;
}

.lead {
  max-width: 34ch;
  margin: 0;
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.75;
  font-weight: 300;
}

/* Galeria de memórias */

.memory-shell {
  position: relative;
  margin: 0 -1rem;
}

.memory-track {
  display: grid;
  grid-auto-columns: minmax(15.5rem, 72%);
  grid-auto-flow: column;
  gap: 0.9rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding: 0.55rem 1rem 1.4rem;
}

.memory-track::-webkit-scrollbar {
  display: none;
}

.memory-card {
  position: relative;
  display: grid;
  gap: 0.75rem;
  scroll-snap-align: center;
  padding: 0.85rem 0.85rem 1.1rem;
  border: 1px solid oklch(100% 0.008 70 / 70%);
  border-radius: 0.35rem;
  background: var(--paper);
  box-shadow: var(--shadow);
  transform: rotate(var(--tilt)) translateY(0.4rem);
  transition: transform 460ms var(--ease), box-shadow 460ms var(--ease);
  cursor: pointer;
  animation: cardReveal 560ms var(--ease) var(--card-delay, 0ms) both;
}

@keyframes cardReveal {
  from {
    opacity: 0;
    transform: rotate(var(--tilt)) translateY(1.8rem);
  }
  to {
    opacity: 1;
    transform: rotate(var(--tilt)) translateY(0.4rem);
  }
}

.memory-card.is-current,
.memory-card:focus-visible {
  outline: none;
  transform: rotate(0deg) translateY(-0.5rem);
  box-shadow: 0 32px 80px oklch(40% 0.12 18 / 26%);
}

.memory-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 0.2rem;
  background: linear-gradient(135deg, var(--blush), oklch(84% 0.04 18));
}

.memory-card p {
  min-height: 3.7rem;
  margin: 0;
  color: var(--wine);
  font-family: "Playfair Display", Georgia, serif;
  font-style: italic;
  font-size: 1rem;
  line-height: 1.4;
}

.video-shell {
  margin: -0.45rem -1rem 0;
}

.video-track {
  display: grid;
  grid-auto-columns: minmax(12.5rem, 58%);
  grid-auto-flow: column;
  gap: 0.85rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding: 0.3rem 1rem 1rem;
}

.video-track::-webkit-scrollbar {
  display: none;
}

.video-card {
  display: grid;
  gap: 0.65rem;
  scroll-snap-align: center;
  padding: 0.72rem;
  border: 1px solid oklch(100% 0.008 70 / 68%);
  border-radius: 0.5rem;
  color: var(--wine);
  background: oklch(98% 0.012 70 / 78%);
  box-shadow: 0 14px 36px oklch(45% 0.09 18 / 11%);
  cursor: pointer;
  text-align: left;
  transition: transform 280ms var(--ease), box-shadow 280ms var(--ease), background-color 280ms var(--ease);
}

.video-card:hover {
  transform: translateY(-0.22rem);
  background: var(--paper);
  box-shadow: 0 22px 52px oklch(42% 0.1 18 / 17%);
}

.video-thumb {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: 0.35rem;
  background: linear-gradient(135deg, var(--blush), oklch(84% 0.04 18));
}

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

.play-mark {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 2.55rem;
  height: 2.55rem;
  border-radius: 999px;
  background: oklch(98% 0.012 70 / 88%);
  box-shadow: 0 12px 28px oklch(35% 0.12 18 / 20%);
  transform: translate(-50%, -50%);
}

.play-mark::before {
  content: "";
  position: absolute;
  left: 1rem;
  top: 0.75rem;
  border-block: 0.52rem solid transparent;
  border-left: 0.82rem solid var(--wine);
}

.video-card-title {
  min-height: 2.5rem;
  font-family: "Playfair Display", Georgia, serif;
  font-size: 1.05rem;
  line-height: 1.25;
}

.memory-caption,
.bouquet-message {
  min-height: 4.8rem;
  margin: 0;
  color: var(--wine);
  font-family: "Playfair Display", Georgia, serif;
  font-size: 1.68rem;
  line-height: 1.3;
  text-wrap: balance;
}

/* Setas de memória */

.memory-arrow {
  position: absolute;
  z-index: 4;
  top: 43%;
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid oklch(100% 0.008 70 / 70%);
  border-radius: 999px;
  background: oklch(98% 0.012 70 / 90%);
  box-shadow: var(--soft-shadow);
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: transform 240ms var(--ease), box-shadow 240ms var(--ease);
}

.memory-arrow:hover {
  transform: scale(1.1);
  box-shadow: 0 18px 44px oklch(45% 0.09 18 / 20%);
}

.memory-arrow::before {
  content: "";
  position: absolute;
  inset: 0;
  width: 0.65rem;
  height: 0.65rem;
  margin: auto;
  border-top: 2px solid var(--wine);
  border-left: 2px solid var(--wine);
}

.memory-prev {
  left: -1.4rem;
}

.memory-next {
  right: -1.4rem;
}

.memory-prev::before {
  transform: rotate(-45deg);
}

.memory-next::before {
  transform: rotate(135deg);
}

/* Botão principal */

.primary-action {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  min-height: 3.2rem;
  padding: 0 1.35rem 0 1.5rem;
  border: 0;
  border-radius: 999px;
  color: var(--paper);
  background: var(--wine);
  box-shadow: 0 16px 36px oklch(35% 0.12 18 / 25%);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform 280ms var(--ease), box-shadow 280ms var(--ease), background-color 280ms var(--ease);
}

.primary-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 54px oklch(35% 0.12 18 / 32%);
  background: oklch(40% 0.13 18);
}

.primary-action:active {
  transform: translateY(0.05rem) scale(0.98);
  box-shadow: 0 10px 24px oklch(35% 0.12 18 / 20%);
}

.primary-action:focus-visible,
.audio-toggle:focus-visible,
.step-dot:focus-visible,
.video-card:focus-visible,
.video-close:focus-visible,
.bouquet:focus-visible,
.envelope:focus-visible,
.memory-arrow:focus-visible {
  outline: 3px solid oklch(70% 0.12 70 / 72%);
  outline-offset: 3px;
}

.action-mark {
  width: 0.62rem;
  height: 0.62rem;
  border-top: 2px solid currentColor;
  border-right: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 240ms var(--ease);
}

.primary-action:hover .action-mark {
  transform: rotate(45deg) translate(2px, -2px);
}

/* Buquê */

.bouquet {
  position: relative;
  justify-self: center;
  width: 21em;
  height: 24em;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: min(1rem, 3.9vw);
  transform-origin: 50% 90%;
  animation: bouquetSway 5200ms ease-in-out infinite;
  transition: filter 400ms var(--ease);
}

.bouquet:hover {
  filter: drop-shadow(0 6px 20px oklch(60% 0.1 18 / 28%));
}

.stem,
.leaf,
.flower,
.wrap,
.ribbon {
  position: absolute;
  display: block;
}

.stem {
  bottom: 4em;
  left: 50%;
  width: 0.35em;
  height: 12em;
  border-radius: 999px;
  background: linear-gradient(var(--leaf), var(--leaf-dark));
  transform-origin: 50% 100%;
}

.stem-one  { transform: translateX(-50%) rotate(-19deg); }
.stem-two  { transform: translateX(-50%) rotate(-7deg); }
.stem-three{ transform: translateX(-50%) rotate(9deg); }
.stem-four { transform: translateX(-50%) rotate(20deg); }

.leaf {
  bottom: 8.3em;
  left: 50%;
  width: 4.2em;
  height: 2em;
  border-radius: 100% 0 100% 0;
  background: var(--leaf);
}

.leaf-one { transform: translateX(-4.1em) rotate(-26deg); }
.leaf-two { transform: translateX(0.2em) rotate(118deg); }

.flower {
  width: 6em;
  height: 6em;
  border-radius: 999px;
  transform: scale(0.2);
  animation: flowerOpen 880ms var(--ease) forwards;
}

.flower::before,
.flower::after,
.flower i::before,
.flower i::after {
  content: "";
  position: absolute;
  width: 2.7em;
  height: 3.5em;
  border-radius: 55% 55% 45% 45%;
  box-shadow: inset 0 -0.35em 0 oklch(55% 0.16 22 / 18%);
  transform-origin: 50% 92%;
}

.flower::before {
  left: 1.65em;
  top: 0.15em;
  background: var(--petal);
  filter: saturate(1.05);
}

.flower::after {
  left: 1.65em;
  bottom: 0.15em;
  background: var(--petal);
  transform: rotate(180deg);
}

.flower i::before {
  left: 0.35em;
  top: 1.35em;
  background: oklch(84% 0.07 26);
  transform: rotate(-75deg);
}

.flower i::after {
  right: 0.35em;
  top: 1.35em;
  background: oklch(84% 0.07 26);
  transform: rotate(75deg);
}

.flower i {
  position: absolute;
  inset: 0;
  border-radius: inherit;
}

/* Centro das flores */
.flower-center {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1.4em;
  height: 1.4em;
  margin: -0.7em 0 0 -0.7em;
  border-radius: 999px;
  background: radial-gradient(circle at 38% 32%, oklch(96% 0.04 70), oklch(88% 0.07 62));
  box-shadow: 0 2px 8px oklch(40% 0.09 18 / 22%);
  z-index: 2;
}

.flower-one {
  left: 2.4em;
  top: 4.2em;
  animation-delay: 120ms;
}

.flower-two {
  left: 7.2em;
  top: 2.4em;
  animation-delay: 260ms;
}

.flower-three {
  right: 2.4em;
  top: 4.8em;
  animation-delay: 400ms;
}

.flower-four {
  left: 6.2em;
  top: 7.4em;
  width: 5em;
  height: 5em;
  animation-delay: 520ms;
}

.flower-four::before,
.flower-four::after,
.flower-four i::before,
.flower-four i::after {
  background: oklch(88% 0.04 80);
}

.wrap {
  left: 50%;
  bottom: 1.7em;
  width: 9em;
  height: 6.3em;
  border-radius: 0.6em 0.6em 4.2em 4.2em;
  background: linear-gradient(155deg, oklch(96% 0.017 70), oklch(89% 0.032 58));
  box-shadow: var(--soft-shadow);
  transform: translateX(-50%);
  clip-path: polygon(8% 0, 92% 0, 73% 100%, 27% 100%);
}

.ribbon {
  left: 50%;
  bottom: 4.75em;
  width: 6.8em;
  height: 1.05em;
  border-radius: 999px;
  background: var(--wine-soft);
  transform: translateX(-50%);
}

.scene-bouquet .primary-action {
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.6rem);
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
}

.scene-bouquet.has-revealed .primary-action {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.scene-bouquet.has-revealed .bouquet {
  filter: drop-shadow(0 0 22px oklch(73% 0.13 18 / 32%));
  transition: filter 900ms var(--ease);
}

/* Partículas */

.particle {
  position: fixed;
  z-index: 50;
  pointer-events: none;
  animation: floatPetal 960ms var(--ease) forwards;
}

.particle.petal {
  border-radius: 70% 30% 70% 30%;
  background: var(--petal);
}

.particle.heart::before,
.particle.heart::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: var(--petal);
  border-radius: 50% 50% 0 0;
}

.particle.heart::before {
  left: 0;
  transform-origin: 100% 100%;
  transform: rotate(-45deg);
}

.particle.heart::after {
  left: 50%;
  transform-origin: 0 100%;
  transform: rotate(45deg);
}

/* Envelope */

.envelope-stage {
  position: relative;
  display: grid;
  min-height: 17rem;
  place-items: center;
}

.envelope {
  position: relative;
  width: min(82vw, 20rem);
  height: min(54vw, 13rem);
  border: 0;
  background: transparent;
  cursor: pointer;
  perspective: 900px;
  transition: transform 360ms var(--ease), filter 360ms var(--ease);
}

.envelope:not(.is-open):hover {
  transform: translateY(-5px) scale(1.02);
  filter: drop-shadow(0 18px 36px oklch(40% 0.11 18 / 24%));
}

.envelope span {
  position: absolute;
  display: block;
}

.letter-paper {
  left: 8%;
  bottom: 16%;
  z-index: 1;
  width: 84%;
  height: 78%;
  border-radius: 0.38rem;
  background:
    repeating-linear-gradient(transparent 0 1.55rem, oklch(77% 0.033 50 / 22%) 1.6rem),
    linear-gradient(var(--paper), oklch(96% 0.017 68));
  box-shadow: 0 18px 45px oklch(37% 0.1 18 / 16%);
  transform: translateY(3.4rem) scale(0.92);
  transition: transform 780ms var(--ease), opacity 420ms var(--ease);
}

.envelope-back {
  inset: 19% 0 0;
  z-index: 2;
  border-radius: 0.52rem;
  background: oklch(87% 0.055 20);
  box-shadow: var(--shadow);
}

.envelope-front {
  inset: 19% 0 0;
  z-index: 5;
  border-radius: 0 0 0.52rem 0.52rem;
  background: linear-gradient(150deg, oklch(91% 0.05 24), oklch(80% 0.07 18));
  clip-path: polygon(0 0, 50% 55%, 100% 0, 100% 100%, 0 100%);
}

.envelope-left,
.envelope-right {
  bottom: 0;
  z-index: 4;
  width: 50%;
  height: 81%;
  background: oklch(84% 0.058 21);
}

.envelope-left {
  left: 0;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}

.envelope-right {
  right: 0;
  clip-path: polygon(100% 0, 0 50%, 100% 100%);
}

.envelope-flap {
  left: 0;
  top: 19%;
  z-index: 6;
  width: 100%;
  height: 82%;
  background: oklch(89% 0.06 20);
  clip-path: polygon(0 0, 50% 56%, 100% 0);
  transform-origin: 50% 0;
  transition: transform 720ms var(--ease), z-index 720ms var(--ease);
}

.seal {
  left: 50%;
  top: 54%;
  z-index: 7;
  width: 2.55rem;
  height: 2.55rem;
  border-radius: 999px;
  background: radial-gradient(circle at 34% 30%, oklch(78% 0.12 18), var(--wine));
  box-shadow: 0 10px 24px oklch(35% 0.12 18 / 28%);
  transform: translate(-50%, -50%);
  transition: opacity 300ms var(--ease), transform 520ms var(--ease);
}

.seal::before,
.seal::after {
  content: "";
  position: absolute;
  width: 0.72rem;
  height: 1.05rem;
  border-radius: 999px 999px 0 0;
  background: var(--paper);
  left: 50%;
  top: 44%;
  transform-origin: 50% 100%;
}

.seal::before {
  transform: translate(-76%, -50%) rotate(-45deg);
}

.seal::after {
  transform: translate(-24%, -50%) rotate(45deg);
}

.envelope.is-open .envelope-flap {
  z-index: 1;
  transform: rotateX(178deg);
}

.envelope.is-open .seal {
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.7);
}

.envelope.is-open .letter-paper {
  transform: translateY(-7.2rem) scale(1);
}

/* Carta aberta */

.open-letter {
  max-height: min(46svh, 28rem);
  overflow: auto;
  margin-top: -1.8rem;
  padding: 1.6rem 1.6rem 1.6rem 2.2rem;
  border: 1px solid oklch(100% 0.008 70 / 70%);
  border-radius: 0.5rem;
  color: var(--ink);
  background:
    linear-gradient(90deg, oklch(78% 0.08 18 / 22%) 0 2px, transparent 2px 100%),
    repeating-linear-gradient(var(--paper) 0 1.65rem, oklch(92% 0.02 62) 1.7rem);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(1.2rem);
  transition: opacity 540ms var(--ease), transform 540ms var(--ease);
}

.open-letter.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.open-letter p {
  margin: 0 0 1rem;
  font-family: "Playfair Display", Georgia, serif;
  font-size: 1.08rem;
  line-height: 1.75;
}

.open-letter p:first-child {
  font-size: 1.22rem;
  font-weight: 500;
  margin-bottom: 1.4rem;
}

.open-letter p:last-child {
  margin-bottom: 0;
  font-style: italic;
  color: var(--wine);
}

/* Videos */

.video-lightbox[hidden] {
  display: none;
}

.video-lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: oklch(23% 0.035 24 / 42%);
}

.video-dialog {
  position: relative;
  width: min(100%, 46rem);
  max-height: calc(100svh - 2rem);
  overflow: auto;
  padding: 1.35rem;
  border: 1px solid oklch(100% 0.008 70 / 66%);
  border-radius: 0.8rem;
  color: var(--ink);
  background: var(--paper);
  box-shadow: 0 34px 100px oklch(18% 0.04 24 / 32%);
}

.video-dialog h2 {
  max-width: 14ch;
  margin: 0.2rem 0 1rem;
  font-size: 2.35rem;
  line-height: 0.98;
}

.video-dialog video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 0.45rem;
  background: oklch(22% 0.03 24);
}

.video-note {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
}

.video-close {
  position: absolute;
  right: 0.85rem;
  top: 0.85rem;
  width: 2.45rem;
  height: 2.45rem;
  border: 1px solid oklch(80% 0.04 24 / 44%);
  border-radius: 999px;
  background: oklch(98% 0.012 70 / 88%);
  cursor: pointer;
}

.video-close::before,
.video-close::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1rem;
  height: 2px;
  border-radius: 999px;
  background: var(--wine);
}

.video-close::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.video-close::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

/* Keyframes */

@keyframes flowerOpen {
  from {
    opacity: 0;
    transform: translateY(1.2rem) scale(0.2) rotate(-8deg);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1) rotate(0deg);
  }
}

@keyframes bouquetSway {
  0%, 100% { transform: rotate(-1.4deg) translateY(0); }
  25%       { transform: rotate(0.3deg) translateY(-2px); }
  50%       { transform: rotate(1.4deg) translateY(0); }
  75%       { transform: rotate(-0.3deg) translateY(-1px); }
}

@keyframes floatPetal {
  to {
    opacity: 0;
    transform: translate(var(--x), var(--y)) rotate(var(--r)) scale(0.65);
  }
}

@keyframes pulse {
  50% {
    box-shadow: 0 0 0 0.45rem oklch(52% 0.095 144 / 18%);
  }
}

/* Desktop */

@media (min-width: 48rem) {
  body {
    display: grid;
    place-items: center;
    padding: clamp(1rem, 2.6vw, 2rem);
  }

  .ambient-one {
    width: 26rem;
    height: 26rem;
    left: -8rem;
    bottom: -2rem;
  }

  .ambient-two {
    width: 24rem;
    height: 24rem;
    right: -7rem;
    top: -4rem;
  }

  .app {
    width: min(calc(100vw - 2rem), 72rem);
    min-height: min(54rem, calc(100svh - 2rem));
    padding: clamp(1.7rem, 3vw, 3.1rem);
    border: 1px solid oklch(100% 0.008 70 / 42%);
    border-radius: 1.35rem;
    background: oklch(98% 0.012 70 / 40%);
    box-shadow: 0 36px 110px oklch(35% 0.12 18 / 18%);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
  }

  .step-indicator {
    top: max(1.35rem, env(safe-area-inset-top));
  }

  .audio-toggle {
    right: max(1.4rem, calc((100vw - 72rem) / 2 + 1.8rem));
    bottom: max(1.4rem, env(safe-area-inset-bottom));
  }

  .scene {
    inset: 0 clamp(1.7rem, 3vw, 3.1rem) auto;
    min-height: min(54rem, calc(100svh - 2rem));
    grid-template-columns: minmax(18rem, 0.9fr) minmax(20rem, 1.1fr);
    grid-template-rows: auto auto auto;
    align-content: center;
    align-items: center;
    column-gap: clamp(1.75rem, 4vw, 4rem);
    row-gap: 1.35rem;
    padding: 5.6rem 0 4.6rem;
  }

  .scene-copy {
    max-width: 25rem;
    align-self: end;
  }

  h1,
  h2 {
    max-width: 9ch;
    font-size: 4.35rem;
    line-height: 0.9;
  }

  .lead {
    max-width: 31ch;
    font-size: 1.16rem;
  }

  .memory-shell {
    grid-column: 2;
    grid-row: 1 / span 3;
    width: 100%;
    min-width: 0;
    margin: 0;
  }

  .scene-memories .memory-shell {
    grid-row: 1 / span 2;
    align-self: end;
  }

  .memory-track {
    grid-auto-columns: minmax(16rem, 42%);
    gap: 1.15rem;
    padding: 1.2rem 1.55rem 2rem;
  }

  .video-shell {
    grid-column: 2;
    grid-row: 3;
    width: 100%;
    min-width: 0;
    margin: -0.9rem 0 0;
    align-self: start;
  }

  .video-track {
    grid-auto-columns: minmax(11rem, 31%);
    gap: 0.9rem;
    padding: 0.25rem 1.55rem 0.95rem;
  }

  .video-card {
    padding: 0.65rem;
  }

  .video-card-title {
    min-height: 2.35rem;
    font-size: 1rem;
  }

  .memory-card {
    padding: 1rem 1rem 1.25rem;
  }

  .memory-card p {
    font-size: 1.06rem;
  }

  .memory-caption,
  .bouquet-message {
    grid-column: 1;
    max-width: 16ch;
    min-height: 0;
    font-size: 2.1rem;
  }

  .primary-action {
    grid-column: 1;
    align-self: start;
  }

  .bouquet {
    grid-column: 2;
    grid-row: 1 / span 3;
    width: 21em;
    height: 24em;
    font-size: 1.36rem;
  }

  .envelope-stage {
    grid-column: 2;
    grid-row: 1 / span 2;
    width: 100%;
    min-height: 24rem;
  }

  .envelope {
    width: clamp(23rem, 44vw, 34rem);
    height: clamp(15.5rem, 28vw, 21.5rem);
  }

  .open-letter {
    grid-column: 1 / -1;
    justify-self: center;
    width: min(100%, 62rem);
    max-height: min(30svh, 24rem);
    margin-top: 0.2rem;
    padding: 1.9rem 2.1rem 1.9rem 2.7rem;
  }

  .open-letter p {
    font-size: 1.16rem;
  }

  .memory-arrow {
    display: block;
  }
}

@media (min-width: 64rem) {
  .app {
    width: min(calc(100vw - 4rem), 82rem);
    min-height: min(56rem, calc(100svh - 3rem));
  }

  .scene {
    min-height: min(56rem, calc(100svh - 3rem));
    grid-template-columns: minmax(18rem, 0.82fr) minmax(36rem, 1.35fr);
    column-gap: clamp(3rem, 6vw, 6rem);
  }

  h1,
  h2 {
    font-size: 6.05rem;
  }

  .lead {
    font-size: 1.22rem;
  }

  .memory-track {
    grid-auto-columns: minmax(19rem, 34%);
    gap: 1.35rem;
  }

  .video-track {
    grid-auto-columns: minmax(12rem, 25%);
    gap: 1rem;
  }

  .bouquet {
    font-size: 1.68rem;
  }

  .envelope-stage {
    min-height: 28rem;
  }

  .envelope {
    width: min(100%, 39rem);
    height: 24.5rem;
  }
}

@media (max-width: 23rem) {
  .app {
    padding-inline: 0.8rem;
  }

  h1,
  h2 {
    font-size: 2.65rem;
  }

  .memory-track {
    grid-auto-columns: 78%;
  }

  .memory-card p {
    font-size: 0.98rem;
  }

  .audio-toggle {
    min-height: 2.5rem;
    padding-inline: 0.75rem;
    font-size: 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }

  .float-charm {
    animation: floatCharm var(--duration, 16s) var(--delay, 0s) ease-in-out infinite !important;
    opacity: 0.68;
  }

  .charm-shape {
    animation: charmBreath 3400ms ease-in-out infinite !important;
  }

  .float-charm:hover .charm-shape {
    animation: charmJelly 760ms cubic-bezier(0.16, 1, 0.3, 1) infinite !important;
  }
}