:root {
  --night: #052016;
  --pitch: #0A3B2C;
  --pitch-hi: #13583F;
  --paper: #F8F2E6;
  --paper-2: #EDE3CF;
  --ink: #0F2A20;
  --ink-2: #44574D;
  --green: #007749;
  --deep: #0B3D2E;
  --gold: #FFB81C;
  --foil: #C9972E;
  --foil-hi: #F3D27C;
  --foil-lo: #8C6614;
  --serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --sans: "Barlow", system-ui, -apple-system, "Segoe UI", sans-serif;
  --cond: "Barlow Condensed", "Arial Narrow", system-ui, sans-serif;
  --envW: 420px;
  --cardW: 600px;
  --cardFinalY: -24px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--night);
  color: var(--ink);
  font: 400 17px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}
body.is-closed, body.is-opening { overflow: hidden; }
button, input, select, textarea { font: inherit; color: inherit; }

/* ---------- the stage ---------- */

.stage {
  position: relative;
  height: 100svh;
  min-height: 540px;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(120% 75% at 50% 0%, var(--pitch-hi) 0%, var(--pitch) 48%, var(--night) 100%);
}
.stage::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  background: radial-gradient(140% 100% at 50% 45%, transparent 55%, rgba(0, 0, 0, 0.45) 100%);
}
.pitch {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.035) 0 70px, rgba(0, 0, 0, 0.04) 70px 140px);
  -webkit-mask-image: linear-gradient(to bottom, transparent 10%, #000 70%);
  mask-image: linear-gradient(to bottom, transparent 10%, #000 70%);
}

.flood {
  position: absolute;
  top: -6%;
  width: 46vmax;
  height: 110vmax;
  z-index: 0;
  opacity: 0;
  pointer-events: none;
  mix-blend-mode: screen;
  background: linear-gradient(to bottom, rgba(255, 248, 222, 0.34), rgba(255, 248, 222, 0.08) 45%, transparent 75%);
  clip-path: polygon(46% 0, 54% 0, 100% 100%, 0 100%);
  filter: blur(14px);
}
.flood-l { left: -14vmax; transform: rotate(-30deg); transform-origin: 50% 0; }
.flood-r { right: -14vmax; transform: rotate(30deg); transform-origin: 50% 0; }
.lvl-3.is-lit .flood { animation: lightsOn 1.1s steps(1, end) forwards; }
@keyframes lightsOn {
  0% { opacity: 0.6; } 12% { opacity: 0.1; } 22% { opacity: 0.8; } 30% { opacity: 0.25; } 45%, 100% { opacity: 1; }
}

.bunting {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 150px;
  z-index: 1;
  overflow: visible;
  visibility: hidden;
}
.lvl-3 .bunting.is-up { visibility: visible; }
.bunting .pen {
  transform-box: fill-box;
  transform-origin: 50% 0;
  animation: sway 2.6s ease-in-out infinite alternate;
}
@keyframes sway { from { transform: rotate(-6deg); } to { transform: rotate(6deg); } }

.fx { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.fx-back { z-index: 1; }
.fx-front { z-index: 3; }
.fx-page { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 40; }

.scene {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  place-items: center;
  perspective: 1400px;
}

/* ---------- the envelope ---------- */

.env {
  position: relative;
  width: var(--envW);
  height: calc(var(--envW) / 1.42);
  transform-style: preserve-3d;
}
.is-closed .env { animation: bob 3.4s ease-in-out infinite; cursor: pointer; }
@keyframes bob { 0%, 100% { transform: translateY(0) rotate(-0.6deg); } 50% { transform: translateY(-8px) rotate(0.6deg); } }

.env-body { position: absolute; inset: 0; transform-style: preserve-3d; }
.lvl-1 .env-body, .is-open .env-body { display: none; }

.env-back {
  position: absolute;
  inset: 0;
  border-radius: 6px;
  background:
    linear-gradient(to bottom, transparent 55%, var(--paper-2) 55%),
    repeating-linear-gradient(135deg, #0C4A36 0 9px, #0F5840 9px 18px);
  box-shadow: 0 34px 60px -24px rgba(0, 0, 0, 0.7);
  transform: translateZ(0);
}
.env-back::after {
  content: "";
  position: absolute;
  inset: 0 0 45% 0;
  border-radius: 6px 6px 0 0;
  box-shadow: inset 0 -10px 18px -10px rgba(0, 0, 0, 0.5);
}

.env-pocket {
  position: absolute;
  inset: 0;
  clip-path: polygon(0 0, 50% 52%, 100% 0, 100% 100%, 0 100%);
  border-radius: 6px;
  overflow: hidden;
  transform: translateZ(3px);
}
.pocket-art { position: absolute; inset: 0; width: 100%; height: 100%; }
.env-to {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 13%;
  display: grid;
  justify-items: center;
  gap: 0.15em;
  text-align: center;
}
.env-kicker {
  font: 600 max(calc(var(--envW) * 0.026), 9.5px) / 1 var(--cond);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--green);
}
.env-name {
  font: italic 500 calc(var(--envW) * 0.068) / 1.1 var(--serif);
  color: var(--ink);
}

.env-flap {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 56%;
  transform-origin: 50% 0;
  transform: translateZ(4px);
  transform-style: preserve-3d;
}
.flap-face { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.flap-face .tri { position: absolute; inset: 0; clip-path: polygon(0 0, 100% 0, 50% 100%); }
.flap-front { filter: drop-shadow(0 4px 5px rgba(70, 50, 15, 0.3)); }
.flap-front .tri { background: linear-gradient(to bottom, #FCF8F0, var(--paper-2)); border-radius: 6px 6px 0 0; }
.flap-back { transform: rotateY(180deg); }
.flap-back .tri { background: repeating-linear-gradient(135deg, #0C4A36 0 9px, #0F5840 9px 18px); }

.seal {
  position: absolute;
  left: 50%;
  top: 56%;
  width: calc(var(--envW) * 0.16);
  aspect-ratio: 1;
  transform: translate(-50%, -50%) translateZ(5px);
  filter: drop-shadow(0 3px 4px rgba(60, 40, 0, 0.4));
}
.seal svg { display: block; width: 100%; height: 100%; }

.hint {
  position: absolute;
  z-index: 4;
  left: 50%;
  top: calc(50% + var(--envW) / 2.84 + 30px);
  transform: translateX(-50%);
  padding: 0.7em 1.4em;
  border: 1px solid rgba(255, 216, 130, 0.55);
  border-radius: 999px;
  background: rgba(5, 32, 22, 0.45);
  color: #F7E3AE;
  font: 600 15px/1 var(--cond);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  animation: breathe 2.4s ease-in-out infinite;
}
.hint:hover { background: rgba(5, 32, 22, 0.7); }
.hint:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
@keyframes breathe { 50% { box-shadow: 0 0 0 8px rgba(255, 216, 130, 0.08); } }
.lvl-1 .hint, .is-opening .hint, .is-open .hint { display: none; }

/* ---------- the card ---------- */

.card {
  position: absolute;
  left: 50%;
  top: 50%;
  width: var(--cardW);
  height: calc(var(--cardW) * 0.66);
  margin: calc(var(--cardW) * -0.33) 0 0 calc(var(--cardW) * -0.5);
  transform-style: preserve-3d;
}
.card.is-final { transform: translate3d(0, var(--cardFinalY), 0); }

.card-paper {
  position: absolute;
  inset: 0;
  container-type: inline-size;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 6cqw 8cqw;
  text-align: center;
  border-radius: 1.4cqw;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 30% 10%, #FFFDF7 0%, transparent 60%),
    var(--paper);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset, 0 34px 70px -20px rgba(0, 0, 0, 0.6);
  transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transition: transform 0.35s ease-out;
}
.card-paper::before,
.card-paper::after {
  content: "";
  position: absolute;
  pointer-events: none;
  border-radius: 0.8cqw;
}
.card-paper::before { inset: 2.4cqw; border: max(1px, 0.3cqw) solid var(--foil); }
.card-paper::after { inset: 3.3cqw; border: 1px solid rgba(201, 151, 46, 0.45); }

.card-flag {
  width: 7.5cqw;
  aspect-ratio: 3 / 2;
  margin-bottom: 2.6cqw;
  border-radius: 0.5cqw;
  overflow: hidden;
  box-shadow: 0 0 0 max(1px, 0.25cqw) var(--foil), 0 2px 6px rgba(0, 0, 0, 0.2);
}
.card-flag svg { display: block; width: 100%; height: 100%; }
.card-host {
  margin: 0;
  font: 600 max(2.3cqw, 10px)/1.2 var(--cond);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--green);
}
.card-script {
  margin: 1.4cqw 0 0;
  font: italic 600 10.5cqw/1 var(--serif);
  color: var(--deep);
  letter-spacing: -0.01em;
}
.card-event {
  margin: 2cqw 0 0;
  font: 700 5.6cqw/1 var(--cond);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(100deg, var(--foil-lo), var(--foil) 30%, var(--foil-hi) 50%, var(--foil) 70%, var(--foil-lo));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.card-match {
  margin: 1.2cqw 0 0;
  font: 500 max(2.7cqw, 12px)/1.3 var(--sans);
  color: var(--ink-2);
}
.card-match .dot { margin: 0 0.6em; color: var(--foil); }
.card-when {
  margin: 3.4cqw 0 0;
  padding-top: 2.4cqw;
  border-top: 1px solid rgba(201, 151, 46, 0.5);
  display: flex;
  align-items: center;
  gap: 1.6cqw;
  font: 600 max(2.4cqw, 11px)/1 var(--cond);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
}
.card-when i { width: 0.8cqw; height: 0.8cqw; border-radius: 50%; background: var(--foil); }

.card-foil {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  mix-blend-mode: soft-light;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 244, 205, 0.95) 46%, rgba(255, 255, 255, 0) 62%);
  background-size: 260% 100%;
  background-position: var(--foilX, 100%) 0;
}
.lvl-3.is-open .card-foil { opacity: 1; }

.to-rsvp {
  position: absolute;
  z-index: 4;
  left: 50%;
  top: calc(50% + var(--cardFinalY) + var(--cardW) * 0.33 + 26px);
  transform: translateX(-50%);
  padding: 0.75em 1.6em;
  border-radius: 999px;
  background: var(--gold);
  color: var(--night);
  font: 700 16px/1 var(--cond);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-decoration: none;
  box-shadow: 0 10px 24px -8px rgba(0, 0, 0, 0.6);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease 0.2s, transform 0.5s ease 0.2s;
}
.is-open .to-rsvp { opacity: 1; pointer-events: auto; }
.to-rsvp:hover { background: #FFC94D; }
.to-rsvp:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }

/* ---------- after the reveal ---------- */

.after {
  display: none;
  position: relative;
  background: var(--paper);
  padding: 56px 16px 120px;
}
.after::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--green) 0 25%, var(--gold) 25% 50%, var(--green) 50% 75%, var(--gold) 75%);
  background-size: 64px 6px;
}
.is-open .after { display: block; animation: rise 0.7s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(24px); } }

.block { max-width: 620px; margin: 0 auto 48px; }
.block h2 {
  margin: 0 0 18px;
  font: 700 15px/1 var(--cond);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 14px;
}
.block h2::after { content: ""; flex: 1; height: 1px; background: rgba(201, 151, 46, 0.55); }

.greet { margin: 0 0 10px; font: italic 600 30px/1.2 var(--serif); color: var(--deep); }
.intro p:last-child { margin: 0; font-size: 18px; color: var(--ink-2); }

.details dl { margin: 0; display: grid; gap: 0; }
.details dl > div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(15, 42, 32, 0.1);
}
.details dt { font: 600 14px/1.6 var(--cond); letter-spacing: 0.2em; text-transform: uppercase; color: var(--foil-lo); }
.details dd { margin: 0; }
.details a, .foot a { color: var(--green); font-weight: 600; text-underline-offset: 3px; }

form { display: grid; gap: 18px; }
fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
legend { padding: 0; margin-bottom: 10px; font: italic 600 22px/1.2 var(--serif); color: var(--deep); }
.choice { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.choice legend { grid-column: 1 / -1; }
.choice .err { grid-column: 1 / -1; }
.choice-opt { position: relative; }
.choice-opt input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.choice-opt span {
  display: grid;
  place-items: center;
  min-height: 64px;
  padding: 10px 12px;
  border: 1.5px solid rgba(15, 42, 32, 0.22);
  border-radius: 12px;
  background: #fff;
  font: 600 17px/1.2 var(--cond);
  letter-spacing: 0.06em;
  text-align: center;
  text-transform: uppercase;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.choice-opt input:checked + span { background: var(--deep); border-color: var(--deep); color: #F7E3AE; }
.choice-opt input:focus-visible + span { outline: 2px solid var(--foil); outline-offset: 2px; }

.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: grid; gap: 6px; }
.field > span { font: 600 13px/1.2 var(--cond); letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-2); }
.field small { font: inherit; letter-spacing: 0.1em; opacity: 0.7; text-transform: none; }
input:not([type="radio"]):not([type="checkbox"]), select, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid rgba(15, 42, 32, 0.2);
  border-radius: 10px;
  background: #fff;
  font-size: 17px;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(0, 119, 73, 0.15); }
textarea { resize: vertical; min-height: 84px; }

.if-yes { display: none; gap: 18px; }
form.is-yes .if-yes { display: grid; }
.plus { display: grid; gap: 12px; }
.plus-name { display: none; }
.plus.is-on .plus-name { display: grid; }
.check { display: flex; align-items: center; gap: 10px; font-weight: 500; cursor: pointer; }
.check input { width: 20px; height: 20px; accent-color: var(--green); }

.err { display: none; margin: 0; font: italic 500 14px/1.3 var(--sans); color: #B2382F; }
.is-invalid .err, .err.is-on { display: block; }
.is-invalid input, .is-invalid select { border-color: #B2382F; }

.send {
  justify-self: start;
  padding: 16px 34px;
  border: 0;
  border-radius: 999px;
  background: var(--deep);
  color: #F7E3AE;
  font: 700 17px/1 var(--cond);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
.send:hover { background: var(--green); }
.send:active { transform: translateY(1px); }
.send:focus-visible { outline: 2px solid var(--foil); outline-offset: 3px; }

.done {
  padding: 28px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid rgba(201, 151, 46, 0.45);
}
.done-head { margin: 0 0 6px; font: italic 600 28px/1.2 var(--serif); color: var(--deep); }
.done-body { margin: 0 0 20px; color: var(--ink-2); }
.cal-label { margin: 0 0 10px; font: 600 13px/1 var(--cond); letter-spacing: 0.2em; text-transform: uppercase; color: var(--foil-lo); }
.cal-btns { display: flex; flex-wrap: wrap; gap: 10px; }
.cal-btn {
  padding: 11px 20px;
  border: 1.5px solid var(--deep);
  border-radius: 999px;
  background: transparent;
  color: var(--deep);
  font: 700 15px/1 var(--cond);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
}
.cal-btn:hover { background: var(--deep); color: #F7E3AE; }
.done.is-no .cal { display: none; }
.sample-note { margin: 20px 0 0; font-size: 14px; font-style: italic; color: var(--ink-2); }
.clean .sample-note { display: none; }
.link { margin-top: 14px; padding: 0; border: 0; background: none; color: var(--green); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }

.foot { max-width: 620px; margin: 0 auto; padding-top: 24px; border-top: 1px solid rgba(15, 42, 32, 0.1); font-size: 15px; color: var(--ink-2); }
.foot p { margin: 0; }

/* ---------- sample controls ---------- */

.demo {
  position: fixed;
  z-index: 50;
  left: 50%;
  bottom: max(14px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(8, 20, 15, 0.82);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  font: 600 13px/1 var(--cond);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}
.clean .demo { display: none; }
.demo-tag { padding: 0 8px 0 10px; color: var(--gold); }
.demo-levels { display: flex; padding: 2px; border-radius: 999px; background: rgba(255, 255, 255, 0.08); }
.demo button, .demo a {
  padding: 8px 12px;
  border: 0;
  border-radius: 999px;
  background: none;
  color: rgba(255, 255, 255, 0.75);
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  text-decoration: none;
  cursor: pointer;
}
.demo button:hover, .demo a:hover { color: #fff; }
.demo-levels button[aria-pressed="true"] { background: var(--paper); color: var(--night); }

@media (max-width: 560px) {
  body { font-size: 16px; }
  .row { grid-template-columns: 1fr; }
  .details dl > div { grid-template-columns: 1fr; gap: 2px; }
  .greet { font-size: 26px; }
  .demo { gap: 2px; }
  .demo-tag { display: none; }
  .demo button, .demo a { padding: 8px 9px; }
}

@media (prefers-reduced-motion: reduce) {
  .is-closed .env, .hint, .bunting .pen { animation: none; }
  html { scroll-behavior: auto; }
}