:root {
  --bg: #fbf4f8;
  --bg-soft: #f6eef3;
  --card: #f4f2f5;
  --pink-100: #f7d6e6;
  --pink-200: #f3bfd8;
  --pink-400: #ea4b89;
  --pink-500: #e73f7f;
  --red-500: #ef4747;
  --text-main: #374357;
  --text-dark: #303b4d;
  --shadow-soft: 0 18px 42px rgba(85, 46, 64, 0.14);
  --title-gradient: linear-gradient(to right, #ef4444, #ec4899, #f43f5e);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  overflow-x: hidden;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  color: var(--text-main);
  background:
    radial-gradient(circle at 12% 18%, rgba(246, 191, 216, 0.38), transparent 34%),
    radial-gradient(circle at 82% 8%, rgba(246, 191, 216, 0.25), transparent 30%),
    linear-gradient(180deg, #fff9fc 0%, #f7f0f5 45%, #f9f2f7 100%);
  overflow-x: hidden;
  scroll-snap-type: y proximity;
}

main {
  position: relative;
  z-index: 1;
}

.section {
  width: min(1040px, 92vw);
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100svh;
  padding: clamp(1.6rem, 3.2vh, 2.6rem) 0;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
}

h1,
h2,
p {
  margin: 0;
}

h2 {
  font-size: clamp(2rem, 3.7vw, 3.1rem);
  background-image: var(--title-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero {
  gap: 1rem;
}

.hero__glow {
  position: absolute;
  width: min(480px, 88vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(246, 191, 216, 0.52), transparent 66%);
  filter: blur(2px);
  z-index: -1;
}

.hero__title {
  font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  font-size: clamp(2.1rem, 5.5vw, 3.25rem);
  line-height: 1.04;
  background-image: var(--title-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
  max-width: 18ch;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 900ms ease forwards;
}

.hero__name {
  margin: 0 0 2rem;
  font-size: clamp(3.75rem, 12vw, 6rem);
  line-height: 1;
  font-weight: 700;
  font-style: italic;
  background-image: var(--title-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 900ms ease 80ms forwards;
}

.hero__mini-hearts {
  font-size: clamp(1rem, 3vw, 1.25rem);
  letter-spacing: 0.14em;
  color: var(--pink-500);
  opacity: 0;
  transform: translateY(14px);
  animation: fadeUp 900ms ease 140ms forwards;
}

.scroll-down {
  margin-top: 0.6rem;
  border: 0;
  background: none;
  color: var(--pink-500);
  font: inherit;
  cursor: pointer;
  opacity: 0;
  animation: fadeUp 900ms ease 260ms forwards;
  padding: 0.35rem 0.55rem;
}

.scroll-down span:first-child {
  display: none;
}

.scroll-down__arrow {
  font-size: 2rem;
  line-height: 1;
  animation: bounce 1.5s ease-in-out infinite;
}

.counter {
  gap: 1.2rem;
}

.counter__card {
  width: min(320px, 84vw);
  background: var(--card);
  border: 1px solid var(--pink-200);
  border-radius: 18px;
  padding: 1.1rem 1rem 0.95rem;
  box-shadow: var(--shadow-soft);
}

.counter__heart {
  color: var(--red-500);
  font-size: 2rem;
  line-height: 1;
}

.counter__intro {
  margin-top: 0.55rem;
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  color: var(--text-dark);
  font-weight: 600;
}

.counter__number {
  margin-top: 0.35rem;
  display: block;
  font-size: clamp(4rem, 9vw, 5.1rem);
  line-height: 1;
  font-weight: 700;
  color: var(--pink-500);
}

.counter__label {
  font-size: clamp(1.4rem, 3.1vw, 1.85rem);
  color: var(--text-dark);
  font-weight: 600;
}

.counter__dots {
  margin-top: 0.65rem;
  letter-spacing: 0.2em;
  color: #f179a4;
  font-size: 1.1rem;
}

.counter__date {
  color: #7f6b7a;
  font-size: 0.98rem;
}

.message {
  width: min(1110px, 92vw);
  background: #f4f2f5;
  border: 2px solid var(--pink-200);
  border-radius: 22px;
  box-shadow: var(--shadow-soft);
  padding: clamp(1.2rem, 2.4vw, 2.2rem);
  overflow: hidden;
  justify-content: flex-start;
}

.message h2 {
  margin-bottom: clamp(0.85rem, 2.2vh, 1.6rem);
  font-style: italic;
  font-weight: 600;
  font-size: clamp(2rem, 4.2vw, 3.3rem);
}

.message__content {
  width: min(860px, 100%);
  text-align: left;
  margin: 0 auto;
}

.message p {
  color: var(--text-dark);
  font-size: clamp(1.18rem, 2.2vw, 1.95rem);
  line-height: 1.43;
}

.message p + p {
  margin-top: clamp(0.68rem, 1.6vh, 1.15rem);
}

.message__lead::first-letter {
  float: left;
  margin-right: 0.22rem;
  line-height: 0.8;
  font-size: clamp(3.3rem, 7vw, 4.8rem);
  font-weight: 700;
  color: var(--red-500);
}

.message__closing {
  margin-top: 0.8rem;
  text-align: center;
  color: var(--red-500);
  font-weight: 700;
}

.message__spark {
  position: absolute;
  width: 18px;
  height: 18px;
  transform: rotate(45deg);
  border-radius: 5px;
  background: rgba(236, 147, 185, 0.82);
  pointer-events: none;
}

.message__spark::before,
.message__spark::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: inherit;
}

.message__spark::before {
  left: -50%;
}

.message__spark::after {
  top: -50%;
}

.message__spark--1 {
  top: -12px;
  left: 6%;
}

.message__spark--2 {
  top: -16px;
  right: 12%;
  width: 22px;
  height: 22px;
}

.message__spark--3 {
  right: -10px;
  top: 19%;
}

.message__spark--4 {
  bottom: -14px;
  left: 31%;
  width: 22px;
  height: 22px;
}

.message__spark--5 {
  bottom: -11px;
  right: 8%;
}

.gallery {
  gap: 1.05rem;
}

.gallery h2 {
  margin-bottom: 0.2rem;
}

.slider {
  position: relative;
  width: min(840px, 92vw);
  touch-action: pan-y;
}

.slider__track-wrap {
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid var(--pink-200);
  background: #f7f4f7;
  box-shadow: var(--shadow-soft);
  padding: 0.86rem;
}

.slider__track {
  display: flex;
  transition: transform 500ms ease;
}

.slide {
  min-width: 100%;
  position: relative;
}

.slide img {
  width: 100%;
  display: block;
  border-radius: 12px;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.slide p {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.95rem;
  margin: 0 auto;
  width: fit-content;
  max-width: calc(100% - 1.2rem);
  color: #fff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.75);
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  font-weight: 600;
}

.slider__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: 0;
  background: #fff;
  color: var(--pink-500);
  font-size: 1.45rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(42, 21, 33, 0.2);
  z-index: 3;
}

.slider__btn--prev {
  left: 0.5rem;
}

.slider__btn--next {
  right: 0.5rem;
}

.slider__dots {
  margin-top: 0.65rem;
  display: flex;
  justify-content: center;
  gap: 0.36rem;
}

.slider__dot {
  width: 0.55rem;
  height: 0.55rem;
  padding: 0;
  flex: 0 0 auto;
  appearance: none;
  -webkit-appearance: none;
  border-radius: 50%;
  border: 0;
  background: rgba(231, 63, 127, 0.32);
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease;
}

.slider__dot.is-active {
  transform: scale(1.2);
  background: var(--pink-500);
}

.final {
  gap: 0.9rem;
}

.final__card {
  width: min(700px, 92vw);
  background: linear-gradient(145deg, #f74f57 0%, #ea3d8f 100%);
  border-radius: 16px;
  box-shadow: var(--shadow-soft);
  padding: clamp(1.15rem, 2.3vw, 2rem);
}

.final h2 {
  color: #fff;
  font-size: clamp(2rem, 4.2vw, 3.3rem);
  line-height: 1.1;
}

.final__text {
  margin-top: 0.8rem;
  color: rgba(255, 255, 255, 0.95);
  font-size: clamp(1.02rem, 2.15vw, 1.28rem);
  line-height: 1.5;
}

.final__sparkles {
  margin-top: 0.7rem;
  color: rgba(255, 255, 255, 0.95);
  letter-spacing: 0.22em;
}

.final__sign {
  color: #6e5968;
  font-size: 0.9rem;
}

.floating-hearts {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.heart {
  position: absolute;
  width: 16px;
  height: 16px;
  transform: rotate(45deg);
  opacity: 0;
  animation: floatHeart linear forwards;
}

.heart::before,
.heart::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: inherit;
}

.heart::before {
  left: -50%;
}

.heart::after {
  top: -50%;
}

.click-heart {
  position: fixed;
  width: 12px;
  height: 12px;
  pointer-events: none;
  transform: rotate(45deg);
  animation: popHeart 900ms ease-out forwards;
  z-index: 6;
}

.click-heart::before,
.click-heart::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: inherit;
}

.click-heart::before {
  left: -50%;
}

.click-heart::after {
  top: -50%;
}

.confetti-piece {
  position: fixed;
  width: 10px;
  height: 14px;
  top: -30px;
  opacity: 0.9;
  z-index: 7;
  pointer-events: none;
  animation: confettiDrop 2.8s linear forwards;
}

.reveal {
  opacity: 1;
}

.reveal.is-visible {
  animation: revealIn 680ms ease both;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
}

@keyframes revealIn {
  from {
    opacity: 0.2;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatHeart {
  0% {
    opacity: 0;
    transform: translateY(0) rotate(45deg) scale(0.7);
  }
  12% {
    opacity: 0.65;
  }
  100% {
    opacity: 0;
    transform: translateY(-115vh) rotate(45deg) scale(1.3);
  }
}

@keyframes popHeart {
  0% {
    opacity: 0.88;
    transform: rotate(45deg) translate(0, 0) scale(0.7);
  }
  100% {
    opacity: 0;
    transform: rotate(45deg) translate(var(--tx), var(--ty)) scale(1.45);
  }
}

@keyframes confettiDrop {
  0% {
    transform: translateY(-10vh) rotate(0deg);
  }
  100% {
    transform: translateY(115vh) rotate(620deg);
  }
}

@media (max-width: 900px) {
  .section {
    width: 94vw;
  }

  .message {
    padding: 1.15rem 0.95rem;
  }

  .message p {
    font-size: clamp(0.95rem, 3.2vw, 1.2rem);
  }

  .message__content {
    max-height: 70svh;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-gutter: stable both-edges;
    padding-right: 0.2rem;
  }

  .message__content::-webkit-scrollbar {
    width: 4px;
  }

  .message__content::-webkit-scrollbar-thumb {
    background: rgba(231, 63, 127, 0.35);
    border-radius: 999px;
  }

  .message__spark--3 {
    right: -7px;
  }
}

@media (max-width: 620px) {
  h2 {
    font-size: clamp(1.7rem, 8vw, 2.3rem);
  }

  .section {
    padding-top: max(1.35rem, env(safe-area-inset-top));
    padding-bottom: max(1.35rem, env(safe-area-inset-bottom));
  }

  .hero__title {
    max-width: 12ch;
    font-size: clamp(2rem, 9vw, 2.7rem);
  }

  .hero__name {
    font-size: clamp(3rem, 16vw, 3.75rem);
    margin-bottom: 1.4rem;
  }

  .counter__card {
    width: min(290px, 82vw);
  }

  .counter__number {
    font-size: clamp(3.55rem, 18vw, 4.6rem);
  }

  .counter__label {
    font-size: 1.65rem;
  }

  .message {
    border-radius: 16px;
  }

  .message h2 {
    font-size: clamp(2rem, 9vw, 2.4rem);
  }

  .message p {
    font-size: clamp(0.92rem, 3.8vw, 1rem);
    line-height: 1.48;
  }

  .message p + p {
    margin-top: 0.62rem;
  }

  .message__lead::first-letter {
    font-size: clamp(2.5rem, 13vw, 3.2rem);
  }

  .message__spark {
    width: 12px;
    height: 12px;
  }

  .message__spark--2,
  .message__spark--4 {
    width: 15px;
    height: 15px;
  }

  .slider__track-wrap {
    padding: 0.62rem;
  }

  .slide img {
    aspect-ratio: 4 / 5;
  }

  .slide p {
    font-size: 0.98rem;
    bottom: 0.8rem;
  }

  .slider__btn {
    width: 1.9rem;
    height: 1.9rem;
    font-size: 1.24rem;
  }

  .final h2 {
    font-size: clamp(1.95rem, 9vw, 2.45rem);
  }

  .final__text {
    font-size: 0.98rem;
  }
}

@media (max-height: 700px) and (max-width: 620px) {
  .message h2 {
    margin-bottom: 0.55rem;
  }

  .message p {
    font-size: 0.89rem;
    line-height: 1.4;
  }

  .message p + p {
    margin-top: 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}