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

:root {
  --bg: #260b1c;
  --pink: #ed42bc;
  --light: #f5d9ec;
  --muted: #c9a9bf;
  --gold: #ffd18a;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  background: var(--bg);
  color: #fff1fa;
  font-family: "DM Sans", sans-serif;
  overflow-x: hidden;
}

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

button {
  font: inherit;
  cursor: pointer;
}

.particles {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 5;
}

.particle {
  position: absolute;
  bottom: -15px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #f8b7ed;
  box-shadow: 0 0 12px #ff73da;
  animation: float-up linear infinite;
  opacity: 0;
}

@keyframes float-up {
  10% { opacity: .7; }
  90% { opacity: .4; }
  100% { transform: translateY(-110vh); opacity: 0; }
}

.navbar {
  height: 76px;
  position: absolute;
  z-index: 10;
  top: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 8%;
  background: #300d24a8;
  backdrop-filter: blur(12px);
}

.logo {
  font-family: "Playfair Display", serif;
  font-size: 20px;
  font-weight: bold;
}

.logo:first-letter {
  color: var(--pink);
}

nav {
  display: flex;
  gap: 36px;
}

nav a {
  font-size: 12px;
  font-weight: 700;
  color: #d8bdcf;
  padding: 12px 0;
  transition: .3s;
}

nav a:hover,
nav a.active {
  color: #ff9be5;
  border-bottom: 2px solid var(--pink);
}

.menu-toggle {
  display: none;
  border: 0;
  color: white;
  background: transparent;
  font-size: 25px;
}

.hero {
  min-height: 860px;
  height: 100vh;
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 15% 45%, #8d2871a6, transparent 45%),
    radial-gradient(ellipse at 80% 65%, #79234270, transparent 45%),
    linear-gradient(125deg, #48142f, #310b23 65%, #210817);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 65%, #220818a8);
  pointer-events: none;
}

.wave {
  position: absolute;
  left: -10%;
  width: 120%;
  height: 130px;
  border-top: 1px solid #f6a6db14;
  border-radius: 50%;
  background: #ef85ce05;
}

.wave-one { top: 12%; transform: rotate(-2deg); }
.wave-two { top: 17%; transform: rotate(2deg); }

.hero-content {
  position: relative;
  z-index: 2;
  width: min(1000px, 90%);
  margin-top: 50px;
  text-align: center;
}

.birthday-badge {
  display: table;
  margin: 0 auto 24px;
  padding: 9px 17px;
  border: 1px solid #ffd18a70;
  border-radius: 999px;
  color: #ffe4b2;
  background: #ffd18a12;
  box-shadow: 0 0 24px #ed42bc30;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  animation: badge-glow 2.5s ease-in-out infinite alternate;
}

.birthday-badge span {
  color: var(--gold);
  padding: 0 4px;
}

@keyframes badge-glow {
  to {
    box-shadow: 0 0 30px #ed42bc70;
  }
}

.song-title {
  color: #ffd9f1;
  font-size: 12px;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 18px;
  font-weight: 700;
}

.eyebrow {
  color: #e9a1d0;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 4px;
  line-height: 1.8;
}

.hero h1 {
  margin: 26px 0;
  font-family: "Playfair Display", serif;
  font-size: clamp(48px, 6.2vw, 94px);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -3px;
  text-shadow: 0 0 45px #ed42bc38;
}

.hero h1 span,
.section h2 span {
  background: linear-gradient(100deg, #df70c4, #ffb5d8, #ffd68b);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-style: italic;
}

.intro,
.section-intro {
  color: var(--light);
  font-size: 16px;
  line-height: 2;
}

.intro b {
  color: var(--gold);
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 54px;
  padding: 0 27px;
  border: 1px solid transparent;
  border-radius: 40px;
  font-size: 13px;
  font-weight: 700;
  transition: transform .3s, box-shadow .3s;
}

.btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px #ed42bc40;
}

.primary {
  color: #35102b;
  background: linear-gradient(110deg, #ed42bc, #d52aab);
}

.outline {
  border-color: #f3b8df54;
  background: #ffffff05;
}

.outline:hover {
  border-color: var(--pink);
}

.scroll-cue {
  position: absolute;
  top: auto;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: grid;
  justify-items: center;
  gap: 12px;
  white-space: nowrap;
  color: #bd8fae;
  font-size: 10px;
  letter-spacing: 3px;
}

.mouse {
  width: 20px;
  height: 34px;
  border: 1px solid #f2b6db70;
  border-radius: 20px;
}

.mouse::after {
  content: "";
  display: block;
  width: 3px;
  height: 7px;
  margin: 6px auto;
  border-radius: 5px;
  background: #ff8bdd;
  animation: scroll 1.3s infinite;
}

@keyframes scroll {
  to { transform: translateY(10px); opacity: 0; }
}

.side-note {
  position: absolute;
  right: 24px;
  top: 42%;
  writing-mode: vertical-rl;
  font-size: 9px;
  letter-spacing: 3px;
  color: #e5a4d3;
}

.section {
  padding: 120px 8%;
  text-align: center;
  position: relative;
}

.section h2 {
  margin: 16px 0;
  font: 500 clamp(35px, 4vw, 57px)/1.2 "Playfair Display", serif;
}

.section-intro {
  max-width: 650px;
  margin: 0 auto 50px;
  color: var(--muted);
  font-size: 14px;
}

.memories {
  background: linear-gradient(#290b20, #361027);
}

.memory-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1050px;
  margin: auto;
}

.memory-card {
  overflow: hidden;
  border: 1px solid #f9a4df20;
  border-radius: 18px;
  background: #ffffff06;
  transition: .3s;
}

.memory-card:hover {
  transform: translateY(-8px);
  border-color: #e949ba80;
  background: #e949ba0b;
}

.memory-photo {
  width: 100%;
  height: 230px;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid #f9a4df20;
}

.memory-content {
  padding: 28px 22px 30px;
}

.memory-icon {
  font-size: 32px;
  color: #f77dd5;
  margin-bottom: 18px;
}

.memory-card h3,
.wish-box h3 {
  font: 500 25px "Playfair Display", serif;
  margin-bottom: 14px;
}

.memory-card p,
.wish-box > p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.9;
}

.gallery-section {
  background: #230a1a;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1050px;
  margin: auto;
}

.gallery-grid img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid #f8a1df30;
  transition: .4s;
}

.gallery-grid img:hover {
  transform: scale(1.025);
  box-shadow: 0 10px 35px #0005;
}

.photo-note {
  margin-top: 22px;
  color: #b88ca9;
  font-size: 12px;
}

.letter-section {
  background:
    radial-gradient(ellipse at center, #70214e45, transparent 70%),
    #2d0b21;
}

.letter-card {
  max-width: 690px;
  margin: auto;
  padding: 48px;
  border: 1px solid #f3a2d938;
  border-radius: 20px;
  background: #ffffff07;
  box-shadow: 0 20px 80px #10040d50;
}

.envelope {
  font-size: 43px;
  color: #f77dd5;
  margin-bottom: 18px;
}

.letter-label {
  font-size: 10px;
  letter-spacing: 4px;
  color: #e9a1d0;
}

.letter-card h3 {
  font: italic 29px "Playfair Display", serif;
  margin: 22px 0 15px;
}

.letter-preview {
  color: var(--muted);
  margin-bottom: 25px;
  font-size: 14px;
}

.letter-message {
  margin-top: 30px;
  padding-top: 25px;
  border-top: 1px solid #f8a1df30;
  text-align: left;
  animation: reveal .8s ease;
}

.letter-message p {
  margin-bottom: 18px;
  font: 16px/1.9 "Playfair Display", serif;
  color: #f3d9e9;
}

.letter-message .signature {
  color: #f58ad5;
  font-style: italic;
  text-align: right;
}

[hidden] {
  display: none !important;
}

@keyframes reveal {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.wishes-section {
  background: linear-gradient(#2d0b21, #210817);
}

.wish-box {
  max-width: 720px;
  margin: auto;
  padding: 50px 30px;
  border-radius: 22px;
  border: 1px solid #f8a1df30;
  background: radial-gradient(ellipse at top, #8d28713b, #ffffff04 70%);
}

.big-heart {
  color: #ef54c1;
  font-size: 48px;
  margin-bottom: 20px;
  animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
  50% { transform: scale(1.15); }
}

.wish-box h3 {
  margin-bottom: 15px;
}

.wish-box .btn {
  margin-top: 25px;
}

.wish-result {
  margin-top: 25px;
  color: #ffd3eb;
  font-family: "Playfair Display", serif;
  font-size: 19px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 8%;
  border-top: 1px solid #f8a1df20;
  color: #c9a9bf;
  font-size: 11px;
}

footer span {
  color: #f451c2;
}

footer a {
  letter-spacing: 2px;
}

.music-button {
  position: fixed;
  z-index: 20;
  left: 25px;
  bottom: 25px;
  width: 42px;
  height: 42px;
  border: 1px solid #f6a6db50;
  border-radius: 50%;
  color: #ff9be5;
  background: #300d24d9;
  font-size: 22px;
}

.music-hint {
  position: fixed;
  z-index: 20;
  left: 78px;
  bottom: 25px;
  height: 42px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid #ff9be580;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, #ed42bcf2, #8c297bf2);
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 0 18px #ed42bc99;
  animation: music-hint-pulse 1.8s ease-in-out infinite;
}

.music-hint-arrow {
  color: #fff;
  font-size: 20px;
  animation: music-hint-point 1s ease-in-out infinite alternate;
}

@keyframes music-hint-pulse {
  50% {
    box-shadow: 0 0 26px #ed42bccc;
  }
}

@keyframes music-hint-point {
  to {
    transform: translateX(-4px);
  }
}

@media (max-width: 760px) {
  .navbar {
    height: 68px;
    padding: 0 6%;
  }

  .menu-toggle {
    display: block;
  }

  nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    padding: 20px 6%;
    background: #300d24f5;
    flex-direction: column;
    gap: 10px;
  }

  nav.show {
    display: flex;
  }

  nav a {
    padding: 10px 0;
  }

  .hero {
    min-height: 100svh;
    height: auto;
    padding: 88px 0 96px;
  }

  .hero-content {
    margin-top: 0;
  }

  .hero h1 {
    letter-spacing: -1px;
    font-size: clamp(43px, 10vw, 68px);
  }

  .eyebrow {
    font-size: 9px;
    letter-spacing: 2px;
  }

  .intro {
    font-size: 13px;
    line-height: 1.9;
  }

  .intro br {
    display: none;
  }

  .hero-buttons {
    margin-top: 30px;
    gap: 12px;
  }

  .btn {
    min-height: 48px;
    padding: 0 18px;
    font-size: 11px;
  }

  .scroll-cue {
    bottom: 16px;
  }

  .side-note {
    display: none;
  }

  .section {
    padding: 85px 6%;
  }

  .memory-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .memory-grid {
    gap: 15px;
  }

  .gallery-grid img {
    height: 300px;
  }

  .letter-card {
    padding: 32px 22px;
  }

  .letter-message p {
    font-size: 15px;
  }

  footer {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

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