:root {
  --cobalt: #2435f0;
  --cobalt-bright: #3047ff;
  --ink: #08114d;
  --ink-soft: #101c68;
  --sun: #ffd23f;
  --paper: #fff;
  --pink: #ff7ab6;
  --muted: #bfc8ff;
}
* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--paper);
  font: 400 1rem/1.65 "Manrope", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
body.locked { overflow: hidden; }
h1, h2, .eyebrow, .btn, footer, .age { font-family: "Unbounded", "Arial Black", sans-serif; }
button { font: inherit; }
button:focus-visible, summary:focus-visible { outline: 3px solid white; outline-offset: 5px; }
#confetti { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 10; }
.hero {
  min-height: 100svh; position: relative; overflow: hidden;
  display: flex; align-items: center;
  padding: clamp(2rem, 7vw, 6.5rem);
  background: var(--cobalt);
}
.hero::before {
  content: ""; position: absolute; width: 42rem; height: 42rem; border-radius: 50%;
  background: rgba(7, 17, 111, .16); filter: blur(2px);
  right: -15rem; top: -22rem;
}
.hero-inner {
  width: min(100%, 1280px); margin: auto; position: relative; z-index: 1;
  display: grid; grid-template-columns: minmax(240px, .95fr) minmax(280px, 1fr);
  align-items: center; gap: clamp(2rem, 6vw, 7rem);
}
.age {
  color: var(--sun); font-size: clamp(9rem, 25vw, 23rem); line-height: .9;
  height: .9em; letter-spacing: -.1em; position: relative; overflow: hidden;
  font-weight: 900; user-select: none;
}
.strip { transition: transform 1.25s cubic-bezier(.7,0,.2,1); }
.strip span { display: block; height: 1em; }
.adult .strip { transform: translateY(-1em); }
.age-line {
  position: absolute; z-index: 2; height: 4px; left: -2%; right: -2%; top: 50%;
  background: var(--cobalt); box-shadow: 0 0 0 2px rgba(255,210,63,.35);
  transform: rotate(-2deg);
}
.hero-copy { max-width: 620px; }
.eyebrow { text-transform: uppercase; letter-spacing: .13em; font-size: .66rem; font-weight: 700; color: var(--sun); margin-bottom: 1rem; }
h1 { font-weight: 900; font-size: clamp(2rem, 5vw, 4.5rem); line-height: 1.08; letter-spacing: -.045em; max-width: 13ch; }
.sub { color: rgba(255,255,255,.86); margin-top: 1.5rem; max-width: 36ch; font-size: clamp(1rem, 1.5vw, 1.15rem); }
.btn {
  display: inline-flex; align-items: center; gap: 1.4rem; margin-top: 1.7rem;
  background: var(--sun); color: var(--ink); border: 0; border-radius: 999px;
  padding: 1rem 1.45rem; cursor: pointer; font-size: .85rem; font-weight: 700;
  transition: transform .2s, background .2s;
}
.btn:hover { background: #fff; transform: translateY(-3px); }
.btn span { font-family: sans-serif; font-size: 1.2rem; }
.confetti-shape { position: absolute; z-index: 1; width: 20px; height: 7px; border-radius: 99px; background: var(--pink); transform: rotate(42deg); }
.shape-one { top: 13%; left: 8%; }
.shape-two { top: 24%; right: 7%; background: var(--sun); transform: rotate(-48deg); }
.shape-three { bottom: 13%; left: 45%; background: #fff; transform: rotate(-60deg); }
main { background: radial-gradient(ellipse at 80% 15%, rgba(36,53,240,.15), transparent 45%), var(--ink); }
main[hidden] { display: none; }
section { padding: clamp(4rem, 8vw, 7.5rem) clamp(1.5rem, 7vw, 7rem); }
.message-section, .gallery-section { max-width: 1500px; margin: auto; }
.section-heading { margin-bottom: 2.5rem; }
h2 { color: var(--sun); font-size: clamp(1.7rem, 4.5vw, 3.3rem); line-height: 1.15; letter-spacing: -.04em; }
.letter-list { max-width: 1000px; }
details { border-top: 1px solid rgba(255,255,255,.25); }
details:last-child { border-bottom: 1px solid rgba(255,255,255,.25); }
summary { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.35rem .4rem; cursor: pointer; list-style: none; font-weight: 800; font-size: 1.05rem; }
summary::-webkit-details-marker { display: none; }
summary span { display: flex; align-items: center; gap: 1.2rem; }
summary i { color: var(--pink); font-style: normal; font-size: .68rem; letter-spacing: .08em; }
summary b { color: var(--sun); font-family: sans-serif; font-size: 1.8rem; font-weight: 400; transition: transform .25s; }
details[open] summary b { transform: rotate(45deg); }
details p { color: var(--muted); padding: 0 3rem 1.6rem 3.5rem; max-width: 70ch; }
.gallery-top { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 2.2rem; }
.gallery-note { color: var(--muted); font-size: .85rem; }
.gallery-note span { color: var(--sun); padding-left: .5rem; }
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .8rem; }
.photo-card {
  position: relative; padding: 0; border: 1px solid rgba(255,255,255,.1); border-radius: 8px;
  overflow: hidden; cursor: zoom-in; aspect-ratio: 1 / 1; background: linear-gradient(135deg, #293bf2, #ff7ab6);
  text-align: left; isolation: isolate;
}
.photo-card:first-child { grid-column: span 2; grid-row: span 2; }
.photo-card img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .5s, filter .5s; }
.photo-card:hover img { transform: scale(1.045); filter: saturate(1.08); }
.photo-card::after { content: ""; position: absolute; inset: 35% 0 0; background: linear-gradient(transparent, rgba(5,10,45,.8)); opacity: .75; pointer-events: none; }
.photo-card .photo-label { position: absolute; z-index: 1; left: 1rem; right: 1rem; bottom: .8rem; font-size: .76rem; color: white; opacity: 0; transform: translateY(5px); transition: .25s; }
.photo-card:hover .photo-label, .photo-card:focus-visible .photo-label { opacity: 1; transform: none; }
.photo-placeholder { height: 100%; display: grid; place-items: center; padding: 1rem; color: rgba(255,255,255,.9); text-align: center; font-size: .85rem; }
.photo-placeholder strong { display: block; font: 900 clamp(2rem, 6vw, 5rem)/1 "Unbounded", sans-serif; color: var(--sun); }
footer {
  border-top: 1px solid rgba(255,255,255,.13); padding: 2.5rem clamp(1.5rem, 7vw, 7rem) 4rem;
  display: flex; justify-content: space-between; align-items: end; gap: 2rem; color: var(--sun);
}
.signoff { font-size: clamp(1.7rem, 4vw, 3rem); line-height: 1.1; letter-spacing: -.05em; }
.signoff span { display: inline-block; color: var(--pink); font-family: sans-serif; padding-left: .5rem; }
.footer-note { font-family: "Manrope", sans-serif; font-size: .85rem; color: var(--muted); }
dialog { width: min(92vw, 1100px); max-width: 92vw; max-height: 92vh; border: 1px solid rgba(255,255,255,.2); border-radius: 10px; padding: 1rem; background: #080d38; color: white; overflow: visible; margin: auto; }
dialog::backdrop { background: rgba(3,6,30,.92); backdrop-filter: blur(8px); }
dialog[open] { animation: pop .22s ease-out; }
dialog img { display: block; max-width: 100%; max-height: 76vh; object-fit: contain; margin: auto; border-radius: 5px; }
.x { position: absolute; top: -2.8rem; right: 0; border: 0; background: none; color: white; font-size: 2.2rem; line-height: 1; cursor: pointer; }
.lightbox-caption { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; padding: .8rem .2rem 0; }
.lightbox-caption span { color: var(--sun); font-size: .75rem; }
.lightbox-caption p { text-align: right; color: var(--muted); font-size: .85rem; }
.lightbox-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 2.7rem; height: 2.7rem; border: 1px solid rgba(255,255,255,.3); border-radius: 50%; color: white; background: rgba(8,13,56,.75); cursor: pointer; font-size: 1.8rem; }
.prev { left: -1.3rem; } .next { right: -1.3rem; }
@keyframes pop { from { opacity: 0; transform: scale(.96); } to { opacity: 1; transform: scale(1); } }
@media (max-width: 760px) {
  .hero { min-height: 100svh; padding: 2.5rem 1.5rem; }
  .hero-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .age { font-size: clamp(8rem, 42vw, 15rem); height: .78em; width: max-content; }
  .hero-copy { padding-bottom: 1rem; }
  h1 { font-size: clamp(2.2rem, 10vw, 4rem); }
  .gallery-top { align-items: start; flex-direction: column; gap: .8rem; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .55rem; }
  .photo-card:first-child { grid-column: span 2; grid-row: span 1; aspect-ratio: 1.45 / 1; }
  .photo-card .photo-label { opacity: 1; transform: none; }
  details p { padding-left: .4rem; }
  footer { align-items: start; flex-direction: column; }
  .prev { left: -.4rem; } .next { right: -.4rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}