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

:root {
  --bg: #faf6ef;
  --bg-soft: #f1e9dd;
  --bg-highlight: #f4edf9;
  --bg-storm: #eef0f4;
  --text: #40364a;
  --text-muted: #7d7287;
  --purple: #8a5fc4;
  --purple-deep: #6f46a8;
  --purple-light: #a678d8;
  --purple-glow: rgba(138, 95, 196, 0.28);
  --gold: #c08b52;
  --pink: #d98ab4;
  --pink-deep: #c74d87;
  --pink-glow: rgba(199, 77, 135, 0.28);
  --shadow: rgba(64, 54, 74, 0.16);
  --shadow-strong: rgba(64, 54, 74, 0.28);
  --timeline-width: 170px;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-script: 'Great Vibes', cursive;
  --font-sans: 'Inter', system-ui, sans-serif;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

body.welcome-open { overflow: hidden; }

/* ============ Welcome animation ============ */
.welcome {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(166, 120, 216, 0.22) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 70%, rgba(217, 138, 180, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 100%, rgba(192, 139, 82, 0.12) 0%, transparent 50%),
    #f7f0e6;
  transition: opacity 1s var(--ease), visibility 1s;
  overflow: hidden;
}

.welcome.is-closed {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.welcome__content {
  text-align: center;
  position: relative;
  z-index: 2;
  padding: 1rem;
}

.welcome__word {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 6vw, 3.6rem);
  letter-spacing: 0.06em;
  color: var(--text);
  min-height: 1.4em;
}

.welcome__word .w-letter {
  display: inline-block;
  opacity: 0;
  transform: translateY(40px) rotate(8deg) scale(0.6);
  animation: letterPop 0.7s var(--ease-bounce) forwards;
}

.welcome__word .w-space { display: inline-block; width: 0.4em; }

@keyframes letterPop {
  to { opacity: 1; transform: translateY(0) rotate(0) scale(1); }
}

.welcome__name {
  font-family: var(--font-script);
  font-size: clamp(3.6rem, 14vw, 8.5rem);
  font-weight: 400;
  color: var(--pink-deep);
  line-height: 1.1;
  margin: 0.5rem 0 1rem;
  opacity: 0;
  animation: nameGlow 1.6s var(--ease) 1.6s forwards;
  text-shadow: 0 4px 30px var(--pink-glow);
}

@keyframes nameGlow {
  0% { opacity: 0; transform: scale(0.85); filter: blur(8px); }
  100% { opacity: 1; transform: scale(1); filter: blur(0); }
}

.welcome__sub {
  color: var(--text-muted);
  font-weight: 300;
  font-style: italic;
  font-size: 1.05rem;
  opacity: 0;
  animation: fadeIn 1s var(--ease) 2.8s forwards;
  margin-bottom: 2rem;
}

.welcome__btn {
  opacity: 0;
  animation: fadeIn 1s var(--ease) 3.4s forwards;
}

@keyframes fadeIn { to { opacity: 1; } }

/* Balloons */
.welcome__balloons {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.balloon {
  position: absolute;
  bottom: -120px;
  width: 52px;
  height: 64px;
  border-radius: 50% 50% 50% 50% / 42% 42% 58% 58%;
  opacity: 0.8;
  animation: balloonRise linear infinite;
}

.balloon::after {
  content: '';
  position: absolute;
  bottom: -46px;
  left: 50%;
  width: 1px;
  height: 46px;
  background: rgba(64, 54, 74, 0.25);
}

@keyframes balloonRise {
  0% { transform: translateY(0) translateX(0) rotate(-2deg); }
  25% { transform: translateY(-28vh) translateX(18px) rotate(3deg); }
  50% { transform: translateY(-56vh) translateX(-14px) rotate(-3deg); }
  75% { transform: translateY(-84vh) translateX(12px) rotate(2deg); }
  100% { transform: translateY(-118vh) translateX(0) rotate(-2deg); }
}

/* ============ Scroll progress ============ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(to right, var(--purple), var(--pink));
  z-index: 500;
  box-shadow: 0 0 8px var(--purple-glow);
}

/* ============ Lantern particles ============ */
.lantern-field {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.lantern {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--purple-light);
  box-shadow: 0 0 10px 3px var(--purple-glow);
  opacity: 0;
  animation: floatUp linear infinite;
}

@keyframes floatUp {
  0% { opacity: 0; transform: translateY(0) scale(0.5); }
  10% { opacity: 0.5; }
  90% { opacity: 0.25; }
  100% { opacity: 0; transform: translateY(-100vh) scale(1.2); }
}

/* Click hearts */
.click-heart {
  position: fixed;
  pointer-events: none;
  z-index: 900;
  font-size: 1.1rem;
  animation: heartFloat 1.4s ease-out forwards;
}

@keyframes heartFloat {
  0% { opacity: 1; transform: translateY(0) scale(0.6); }
  100% { opacity: 0; transform: translateY(-90px) scale(1.3); }
}

/* ============ Timeline nav ============ */
.timeline {
  position: fixed;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.5rem 1rem;
  width: var(--timeline-width);
}

.timeline__node {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem 0;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.3s var(--ease);
  text-align: left;
}

.timeline__node:hover,
.timeline__node.is-active { color: var(--pink-deep); }

.timeline__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--text-muted);
  flex-shrink: 0;
  transition: all 0.3s var(--ease);
}

.timeline__node.is-active .timeline__dot {
  border-color: var(--purple);
  background: var(--purple);
  box-shadow: 0 0 12px var(--purple-glow);
  transform: scale(1.3);
}

.timeline__label {
  opacity: 0.7;
  transition: opacity 0.3s var(--ease);
}

.timeline__node.is-active .timeline__label,
.timeline__node:hover .timeline__label { opacity: 1; }

/* ============ Layout ============ */
main {
  position: relative;
  z-index: 1;
  margin-left: var(--timeline-width);
}

.section { padding: 5rem 3rem; }

/* ============ Hero ============ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
  position: relative;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(166, 120, 216, 0.14) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(192, 139, 82, 0.1) 0%, transparent 50%),
    var(--bg);
}

.hero__content { max-width: 720px; }

.hero__eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pink-deep);
  margin-bottom: 1.5rem;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero__title em { font-style: italic; color: var(--pink-deep); }

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  font-weight: 300;
  margin-bottom: 2.5rem;
  font-style: italic;
  min-height: 1.9em;
}

.hero__subtitle::after {
  content: '|';
  animation: blink 1s step-end infinite;
  color: var(--pink-deep);
}

@keyframes blink { 50% { opacity: 0; } }

.hero__scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
}

.hero__scroll-hint span {
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--purple), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ============ Buttons ============ */
.btn {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  padding: 0.85rem 2rem;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  border: none;
}

.btn--primary {
  background: var(--purple);
  color: #fff;
  box-shadow: 0 4px 16px var(--purple-glow);
}

.btn--primary:hover {
  background: var(--purple-deep);
  box-shadow: 0 6px 24px var(--purple-glow);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--purple-deep);
  border: 1px solid var(--purple);
}

.btn--ghost:hover { background: rgba(138, 95, 196, 0.12); }

/* ============ Chapters ============ */
.chapter { background: var(--bg); }

.chapter--storm {
  background: var(--bg-storm);
  background-image: radial-gradient(ellipse at 20% 30%, rgba(125, 114, 135, 0.1) 0%, transparent 55%);
}

.chapter--highlight {
  background: var(--bg-highlight);
  background-image: radial-gradient(ellipse at 80% 20%, rgba(166, 120, 216, 0.14) 0%, transparent 50%);
}

.chapter__header {
  max-width: 1100px;
  margin: 0 auto 4rem;
  text-align: center;
}

.chapter__number {
  display: block;
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--pink-deep);
  opacity: 0.45;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.chapter__title {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
  font-weight: 600;
  line-height: 1.25;
}

/* ============ Moments (scrollytelling) ============ */
.moment {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto 6rem;
}

.moment:last-child { margin-bottom: 0; }

.moment[data-side="right"] .moment__text { order: 2; }
.moment[data-side="right"] .moment__media { order: 1; }

.moment--center {
  grid-template-columns: 1fr;
  max-width: 760px;
  text-align: center;
}

.moment__text p {
  color: var(--text-muted);
  font-weight: 300;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.moment__text p:last-child { margin-bottom: 0; }

.moment__text strong { color: var(--text); font-weight: 500; }
.moment__text em { color: var(--pink-deep); font-style: italic; }

.purple-word {
  color: var(--purple-deep) !important;
  text-shadow: 0 0 14px var(--purple-glow);
}

.moment__text--quote p {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-style: italic;
}

.big-quote {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.4vw, 2.4rem) !important;
  color: var(--text) !important;
  line-height: 1.35;
  margin: 1.5rem 0 !important;
}

/* Reveal animations per side */
.moment .moment__text,
.moment .moment__media {
  opacity: 0;
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.moment[data-side="left"] .moment__text { transform: translateX(-40px); }
.moment[data-side="left"] .moment__media { transform: translateX(40px); }
.moment[data-side="right"] .moment__text { transform: translateX(40px); }
.moment[data-side="right"] .moment__media { transform: translateX(-40px); }
.moment[data-side="center"] .moment__text { transform: translateY(36px); }

.moment.is-visible .moment__text,
.moment.is-visible .moment__media {
  opacity: 1;
  transform: translate(0);
}

/* ============ Media items ============ */
.moment__media {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.moment__media--grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  align-items: start;
}

.media-item {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  padding: 8px;
  cursor: pointer;
  box-shadow: 0 6px 24px var(--shadow);
  transform-style: preserve-3d;
  transition: transform 0.25s ease-out, box-shadow 0.3s var(--ease);
  will-change: transform;
}

.media-item:hover {
  box-shadow: 0 12px 36px var(--shadow-strong), 0 0 20px var(--purple-glow);
}

/* Natural aspect ratio — no awkward cropping */
.media-item img,
.media-item video {
  width: 100%;
  height: auto;
  max-height: 72vh;
  display: block;
  object-fit: contain;
  border-radius: 8px;
  background: var(--bg-soft);
}

/* Grid items stay uniform for tidiness */
.moment__media--grid .media-item img,
.moment__media--grid .media-item video {
  aspect-ratio: 4/3;
  object-fit: cover;
  max-height: none;
}

.media-item--glow {
  box-shadow: 0 6px 24px var(--shadow), 0 0 30px var(--purple-glow);
}

.media-item figcaption {
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 8px;
  padding: 1.8rem 1rem 0.7rem;
  background: linear-gradient(to top, rgba(40, 30, 50, 0.8), transparent);
  border-radius: 0 0 8px 8px;
  font-size: 0.8rem;
  font-style: italic;
  color: #fff;
  letter-spacing: 0.03em;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  pointer-events: none;
}

.media-item:hover figcaption {
  opacity: 1;
  transform: translateY(0);
}

.media-item--video { cursor: pointer; }

.expand-badge {
  position: absolute;
  bottom: 0.9rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(40, 30, 50, 0.72);
  color: #fff;
  font-size: 0.62rem;
  padding: 0.3rem 0.65rem;
  border-radius: 20px;
  letter-spacing: 0.05em;
  pointer-events: none;
  backdrop-filter: blur(4px);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.25s var(--ease);
  z-index: 2;
}

.media-item:hover .expand-badge,
.media-item:focus-within .expand-badge {
  opacity: 1;
}

@media (hover: none) {
  .expand-badge { opacity: 1; font-size: 0.58rem; }
}

.video-badge {
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  background: rgba(40, 30, 50, 0.72);
  color: #fff;
  font-size: 0.65rem;
  padding: 0.3rem 0.6rem;
  border-radius: 20px;
  letter-spacing: 0.05em;
  pointer-events: none;
  backdrop-filter: blur(4px);
}

/* ============ Finale ============ */
.finale {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 50%, rgba(166, 120, 216, 0.16) 0%, transparent 60%), var(--bg);
  text-align: center;
}

.finale__content {
  max-width: 680px;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}

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

.finale__eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pink-deep);
  margin-bottom: 2rem;
}

.finale__title {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 400;
  line-height: 1.45;
  margin-bottom: 1.5rem;
  color: var(--text-muted);
}

.finale__message {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-style: italic;
  color: var(--text);
  margin-bottom: 2rem;
  line-height: 1.3;
}

.finale__birthday {
  font-family: var(--font-script);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  color: var(--pink-deep);
  margin-bottom: 3rem;
  text-shadow: 0 4px 24px var(--pink-glow);
}

/* ============ The question ============ */
.question {
  margin-bottom: 3rem;
  padding: 2.5rem 1.5rem;
  border: 1px solid rgba(138, 95, 196, 0.25);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(6px);
}

.question__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.6vw, 2.2rem);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 1.8rem;
}

.question__area[hidden] { display: none; }

.question__area {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  min-height: 90px;
}

.question__yes {
  font-size: 1.05rem;
  padding: 1rem 2.6rem;
}

.question__no {
  transition: left 0.25s var(--ease-bounce), top 0.25s var(--ease-bounce), transform 0.25s var(--ease);
}

.question__no.is-fleeing {
  position: fixed;
  z-index: 800;
  margin: 0;
}

.question__answer {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  font-style: italic;
  color: var(--pink-deep);
  animation: answerPop 0.8s var(--ease-bounce) both;
}

@keyframes answerPop {
  0% { opacity: 0; transform: scale(0.7); }
  100% { opacity: 1; transform: scale(1); }
}

/* ============ Lightbox ============ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(30, 22, 38, 0.93);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox[hidden] { display: none; }

.lightbox__stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 92vw;
  max-height: 88vh;
}

.lightbox__loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: #fff;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  z-index: 2;
}

.lightbox__loading[hidden] { display: none; }

.lightbox__spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(255, 255, 255, 0.25);
  border-top-color: var(--pink);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.lightbox__img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 6px;
  transition: opacity 0.3s var(--ease);
}

.lightbox__img.is-loading { opacity: 0; }

.lightbox__close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
  line-height: 1;
}

.lightbox__close:hover { opacity: 1; }

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.14);
  border: none;
  color: #fff;
  font-size: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s;
}

.lightbox__nav:hover { background: rgba(255, 255, 255, 0.25); }
.lightbox__nav--prev { left: 1.5rem; }
.lightbox__nav--next { right: 1.5rem; }

#confettiCanvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1500;
}

/* ============ Tablet / Mobile ============ */
@media (max-width: 860px) {
  :root { --timeline-width: 0px; }

  main { margin-left: 0; padding-bottom: 66px; }

  .timeline {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    transform: none;
    flex-direction: row;
    justify-content: center;
    width: 100%;
    padding: 0.6rem 0.4rem;
    background: rgba(250, 246, 239, 0.96);
    backdrop-filter: blur(12px);
    border-top: 1px solid rgba(138, 95, 196, 0.2);
    gap: 0;
  }

  .timeline__node {
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.35rem 0.4rem;
    flex: 1;
    justify-content: center;
    align-items: center;
  }

  .timeline__label { font-size: 0.55rem; display: none; }
  .timeline__node.is-active .timeline__label { display: block; }

  .section { padding: 3.5rem 1.1rem; }

  .chapter__header { margin-bottom: 2.5rem; }

  .moment {
    grid-template-columns: 1fr;
    gap: 1.4rem;
    margin-bottom: 3.5rem;
  }

  .moment[data-side="right"] .moment__text { order: 1; }
  .moment[data-side="right"] .moment__media { order: 2; }

  .moment[data-side="left"] .moment__text,
  .moment[data-side="right"] .moment__text,
  .moment[data-side="left"] .moment__media,
  .moment[data-side="right"] .moment__media { transform: translateY(28px); }

  .moment__text p { font-size: 1rem; }

  .media-item img,
  .media-item video { max-height: 60vh; }

  .media-item figcaption { opacity: 1; transform: none; }

  .lightbox__nav { display: none; }

  .question { padding: 2rem 1rem; }
}

@media (max-width: 480px) {
  .section { padding: 3rem 0.9rem; }

  .moment__media--grid { grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }

  .media-item { padding: 5px; border-radius: 10px; }
  .media-item img,
  .media-item video { border-radius: 6px; }

  .btn { padding: 0.8rem 1.6rem; font-size: 0.85rem; }

  .question__area { gap: 1rem; flex-wrap: wrap; }

  .hero__subtitle { font-size: 0.95rem; }

  .welcome__sub { font-size: 0.95rem; }

  .finale__message { font-size: 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .moment .moment__text,
  .moment .moment__media,
  .finale__content { opacity: 1; transform: none; }
  .welcome__word .w-letter { opacity: 1; transform: none; }
  .welcome__name, .welcome__sub, .welcome__btn { opacity: 1; }
}