:root {
  --pink: #e8768a;
  --pink-light: #fce4ec;
  --pink-soft: #f9c4d2;
  --rose: #c06070;
  --text: #3d2c2c;
  --text-light: #8a7070;
  --text-muted: #b8a0a6;
  --bg: #fefbf9;
  --card-bg: rgba(255, 255, 255, 0.6);
  --border: rgba(220, 180, 190, 0.2);
  --radius: 20px;
}

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

html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, sans-serif;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Progress bar ─────────────────────────────────────── */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--pink-soft), var(--pink), var(--rose));
  z-index: 1000;
  width: 0%;
  transition: width 0.1s linear;
}

/* ── Cursor glow ──────────────────────────────────────── */
.cursor-glow {
  position: fixed;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(249, 196, 210, 0.15) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
  opacity: 0;
}

body:hover .cursor-glow { opacity: 1; }

/* ── Floating petals ──────────────────────────────────── */
.petals-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  overflow: hidden;
}

.petal {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--pink-soft);
  border-radius: 50% 0 50% 0;
  opacity: 0;
  animation: petalFall linear forwards;
}

@keyframes petalFall {
  0% { opacity: 0; transform: translateY(-20px) rotate(0deg) scale(0.8); }
  10% { opacity: 0.6; }
  90% { opacity: 0.3; }
  100% { opacity: 0; transform: translateY(100vh) rotate(360deg) scale(0.4); }
}

/* ── Hero ─────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(252, 228, 236, 0.6) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(232, 245, 224, 0.4) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(243, 229, 245, 0.3) 0%, transparent 60%),
    var(--bg);
}

/* Hero floating particles */
.hero__particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--pink-soft);
  opacity: 0;
  animation: particleFloat linear infinite;
}

@keyframes particleFloat {
  0% { opacity: 0; transform: translateY(0) scale(0); }
  20% { opacity: 0.6; transform: scale(1); }
  80% { opacity: 0.3; }
  100% { opacity: 0; transform: translateY(-200px) scale(0.5); }
}

.hero__content {
  position: relative;
  text-align: center;
  z-index: 2;
  padding: 2rem;
}

.hero__rose {
  margin: 0 auto 2rem;
  width: 140px;
  opacity: 0;
  animation: roseReveal 2s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
  cursor: pointer;
  position: relative;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero__rose:hover { transform: scale(1.08); }
.hero__rose:hover .rose-glow { opacity: 1; }

.rose-glow {
  position: absolute;
  top: 10%;
  left: -20%;
  width: 140%;
  height: 60%;
  background: radial-gradient(ellipse, rgba(232, 118, 138, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.rose-svg {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 4px 12px rgba(200, 100, 120, 0.15));
}

.stem {
  stroke-dasharray: 120;
  stroke-dashoffset: 120;
  animation: drawStem 1.5s ease 0.5s forwards;
}

.leaf {
  opacity: 0;
  animation: fadeScale 0.8s ease forwards;
}

.leaf--1 { animation-delay: 1.5s; }
.leaf--2 { animation-delay: 1.8s; }

.bloom {
  opacity: 0;
  transform-origin: center 170px;
  animation: bloomOpen 1.5s cubic-bezier(0.34, 1.4, 0.64, 1) 1.2s forwards;
}

@keyframes drawStem { to { stroke-dashoffset: 0; } }
@keyframes fadeScale {
  from { opacity: 0; transform: scale(0.5); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes bloomOpen {
  from { opacity: 0; transform: scale(0) rotate(-10deg); }
  to { opacity: 1; transform: scale(1) rotate(0deg); }
}
@keyframes roseReveal {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero__title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.4rem, 8vw, 4.5rem);
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.02em;
  opacity: 0;
  animation: fadeUp 1.5s ease 2.5s forwards;
}

.hero__sub {
  font-size: clamp(0.9rem, 2.5vw, 1.1rem);
  font-weight: 300;
  color: var(--text-muted);
  margin-top: 0.8rem;
  letter-spacing: 0.05em;
  opacity: 0;
  animation: fadeUp 1.5s ease 3s forwards;
}

.hero__scroll {
  position: absolute;
  bottom: -35vh;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeUpCenter 1.5s ease 3.5s forwards;
}

.scroll-dot { animation: scrollBounce 2s ease-in-out infinite; }

@keyframes scrollBounce {
  0%, 100% { cy: 8; opacity: 1; }
  50% { cy: 16; opacity: 0.3; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeUpCenter {
  from { opacity: 0; transform: translateX(-50%) translateY(12px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ── Sections ─────────────────────────────────────────── */
.section {
  padding: 6rem 1.5rem;
  position: relative;
}

.section__inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.section__label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--pink);
  background: var(--pink-light);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.section h2 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 2.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.1s;
}

.section.visible h2 { opacity: 1; transform: translateY(0); }

.section__desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-weight: 300;
}

/* ── Poem ─────────────────────────────────────────────── */
.poem { max-width: 480px; margin: 0 auto; }

.poem__line {
  font-size: 1.05rem;
  font-weight: 300;
  line-height: 2.2;
  color: var(--text-light);
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: default;
}

.poem__line.visible { opacity: 1; transform: translateY(0); }
.poem__line--bold { font-weight: 500; color: var(--text); }

.poem__line:hover {
  color: var(--pink);
  transform: translateX(4px);
}

/* ── Cards ────────────────────────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
  perspective: 800px;
}

.card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.2rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  cursor: pointer;
  overflow: hidden;
  transform-style: preserve-3d;
  user-select: none;
}

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

.card:hover {
  box-shadow: 0 16px 40px rgba(200, 100, 120, 0.12);
  border-color: var(--pink-soft);
}

.card.card--kept {
  background: linear-gradient(135deg, rgba(252, 228, 236, 0.6), rgba(255, 255, 255, 0.6));
  border-color: var(--pink-soft);
  box-shadow: 0 8px 30px rgba(232, 118, 138, 0.15);
}

.card.card--kept .card__icon { animation: wiggle 0.5s ease; }

@keyframes wiggle {
  0%, 100% { transform: rotate(0); }
  25% { transform: rotate(-12deg); }
  75% { transform: rotate(12deg); }
}

.card__glow {
  position: absolute;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 118, 138, 0.25), transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  transform: translate(-50%, -50%);
}

.card:hover .card__glow { opacity: 1; }

.card__icon {
  font-size: 2rem;
  margin-bottom: 0.8rem;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.card:hover .card__icon { transform: scale(1.2); }

.card__text {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-light);
  line-height: 1.6;
}

/* ── Heart ────────────────────────────────────────────── */
#heart .section__inner { position: relative; }

.heart-ring {
  position: absolute;
  left: 50%;
  top: calc(50% + 20px);
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 2px solid transparent;
  pointer-events: none;
  transition: all 0.5s ease;
}

.heart-ring.pulse {
  width: 120px;
  height: 120px;
  border-color: rgba(232, 118, 138, 0.4);
  opacity: 0;
}

.heart-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, #f8a5b5, #e8768a);
  color: white;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(232, 118, 138, 0.3);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  z-index: 2;
}

.heart-btn.visible { opacity: 1; transform: translateY(0); }
.heart-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(232, 118, 138, 0.4);
}
.heart-btn:active { transform: scale(0.92); }
.heart-btn svg { pointer-events: none; }

.heart-hint {
  margin-top: 1rem;
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s;
}

.heart-btn.visible ~ .heart-hint { opacity: 1; transform: translateY(0); }

.heart-counter {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--rose);
  opacity: 0;
  transition: opacity 0.6s ease;
}

.heart-counter.show { opacity: 1; }

/* ── Envelope ─────────────────────────────────────────── */
.envelope {
  width: 200px;
  height: 130px;
  margin: 0 auto 2rem;
  position: relative;
  cursor: pointer;
  perspective: 400px;
  transition: transform 0.3s ease;
}

.envelope:hover { transform: scale(1.05); }

.envelope.opened { pointer-events: none; }

.envelope__body {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #fff5f7, #fce4ec);
  border-radius: 8px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  box-shadow: 0 4px 16px rgba(200, 100, 120, 0.08);
}

.envelope__prompt {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: opacity 0.3s ease;
}

.envelope__flap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 65px;
  background: linear-gradient(135deg, #fff0f3, #fce4ec);
  clip-path: polygon(0 0, 50% 100%, 100% 0);
  border: 1px solid var(--border);
  z-index: 2;
  transform-origin: top center;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.envelope.opened .envelope__flap {
  transform: rotateX(180deg);
}

.envelope.opened .envelope__body {
  animation: envelopeSlideDown 0.5s ease 0.3s forwards;
}

@keyframes envelopeSlideDown {
  to { transform: translateY(10px); opacity: 0.3; }
}

/* ── Letter ───────────────────────────────────────────── */
.letter {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  max-width: 540px;
  margin: 0 auto;
  text-align: left;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 0;
  overflow: hidden;
  padding: 0 2.5rem;
}

.letter.letter--open {
  opacity: 1;
  transform: translateY(0);
  max-height: 800px;
  padding: 2.5rem;
}

.letter p {
  font-weight: 300;
  color: var(--text-light);
  line-height: 2;
  font-size: 0.95rem;
  margin-bottom: 1.2rem;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.letter__sig {
  font-family: 'Playfair Display', serif;
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--rose);
  text-align: right;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s;
}

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

/* ── Floating hearts ──────────────────────────────────── */
.float-heart {
  position: fixed;
  z-index: 999;
  pointer-events: none;
  font-size: 1.2rem;
  transition: all 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Click spark ──────────────────────────────────────── */
.click-spark {
  position: fixed;
  pointer-events: none;
  z-index: 999;
}

.spark-dot {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--pink);
  animation: sparkBurst 0.6s ease-out forwards;
}

@keyframes sparkBurst {
  from { opacity: 1; transform: translate(var(--tx), var(--ty)) scale(1); }
  to { opacity: 0; transform: translate(calc(var(--tx) * 3), calc(var(--ty) * 3)) scale(0); }
}

/* ── Footer ───────────────────────────────────────────── */
footer {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 3px;
  text-transform: uppercase;
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 600px) {
  .section { padding: 4rem 1.2rem; }
  .letter.letter--open { padding: 2rem 1.5rem; }
  .letter { padding: 0 1.5rem; }
  .cards { grid-template-columns: repeat(2, 1fr); gap: 0.8rem; }
  .card { padding: 1.5rem 1rem; }
  .hero__rose { width: 110px; }
  .cursor-glow { display: none; }
}

@media (max-width: 380px) {
  .cards { grid-template-columns: 1fr; }
}