/* The invitation page at /invite: a sealed envelope that opens into a small
   card asking for a phone number. Colours and fonts are copied from the top of
   styles.css so this page stands on its own. */

@font-face{font-family:"Imperial Script";src:url("assets/fonts/imperial-script.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Playfair Display";src:url("assets/fonts/playfair-display.woff2") format("woff2");font-weight:400 900;font-style:normal;font-display:swap}
@font-face{font-family:"Playfair Display";src:url("assets/fonts/playfair-display-italic.woff2") format("woff2");font-weight:400 900;font-style:italic;font-display:swap}
@font-face{font-family:"Cormorant Garamond";src:url("assets/fonts/cormorant-garamond.woff2") format("woff2");font-weight:300 700;font-style:normal;font-display:swap}
@font-face{font-family:"Cormorant Garamond";src:url("assets/fonts/cormorant-garamond-italic.woff2") format("woff2");font-weight:300 700;font-style:italic;font-display:swap}

:root{
  --paper:#f9f0e0;
  --paper-light:#fcf7ee;
  --card:#fcf6eb;
  --ink:#45352a;
  --ink-soft:#6a5745;
  --gold:#b08a4a;
  --gold-deep:#7f602b;
  --gold-light:#d8bd86;
  --rule:rgba(176,138,74,.32);
  --wine:#8e3346;
  --sepia:#7a5530;
  --script:"Imperial Script","Snell Roundhand",cursive;
  --display:"Playfair Display",Georgia,serif;
  --serif:"Cormorant Garamond",Garamond,Georgia,serif;
  --frame-inset:20px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --env-w:min(100vw - 56px,440px);
  color-scheme:light;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;background:var(--paper) url("assets/garden/paper.webp") repeat}
body{margin:0;min-height:100vh;min-height:100svh;color:var(--ink);font:500 20px/1.6 var(--serif);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;overflow-x:clip}
img{max-width:100%}
p{margin:0}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--gold-deep);outline-offset:4px;border-radius:2px}
::selection{background:rgba(216,189,134,.45)}
.symbols{position:absolute;width:0;height:0;overflow:hidden}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
[hidden]{display:none!important}

/* ---------------------------------------------------- paper, frame & garden */

.paper{position:fixed;inset:0;z-index:-4;pointer-events:none;background:
  radial-gradient(ellipse 70% 60% at 50% 45%,rgba(255,252,244,.5),transparent 70%),
  radial-gradient(ellipse 120% 90% at 50% 50%,transparent 55%,rgba(199,160,98,.13) 100%),
  radial-gradient(circle at 18% 30%,rgba(214,188,140,.08),transparent 30%),
  radial-gradient(circle at 80% 72%,rgba(214,188,140,.08),transparent 28%)}
.frame{position:fixed;inset:var(--frame-inset);z-index:-3;pointer-events:none;border:1px solid rgba(176,138,74,.5)}
.frame::before{content:"";position:absolute;inset:4px;border:1px solid rgba(176,138,74,.22)}
/* The four corners of the garden painting, laid out as the still painting on
   the main site (--s is one source pixel). */
.garden{--s:calc(min(100vw / 1536, 100vh / 1000) * 1.02);--i:var(--frame-inset);position:fixed;inset:0;z-index:-2;pointer-events:none;background:
  url("assets/garden/tl.webp") left calc(var(--i) - 27 * var(--s)) top calc(var(--i) - 26.5 * var(--s))/calc(424 * var(--s)) auto no-repeat,
  url("assets/garden/tr.webp") right calc(var(--i) - 26.5 * var(--s)) top calc(var(--i) - 26.5 * var(--s))/calc(420 * var(--s)) auto no-repeat,
  url("assets/garden/bl.webp") left calc(var(--i) - 27 * var(--s)) bottom calc(var(--i) - 13.5 * var(--s))/calc(548 * var(--s)) auto no-repeat,
  url("assets/garden/br.webp") right calc(var(--i) - 26.5 * var(--s)) bottom calc(var(--i) - 13.5 * var(--s))/calc(532 * var(--s)) auto no-repeat;
  animation:fade-in 1.4s ease both}

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

.envelope-stage{display:none}
.is-sealed body{overflow:hidden}
.is-sealed .envelope-stage{position:fixed;inset:0;z-index:10;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:clamp(26px,5vh,44px);padding:24px;transition:opacity .7s ease,transform .9s var(--ease)}
.envelope-stage.is-leaving{opacity:0;transform:translateY(36px);pointer-events:none}

.envelope-kicker,.envelope-hint{font:500 11.5px/1.5 var(--display);letter-spacing:.34em;text-indent:.34em;text-transform:uppercase;color:var(--gold-deep);text-align:center;animation:fade-up 1.2s .5s var(--ease) both}
.envelope-hint{font:italic 500 19px/1.4 var(--serif);letter-spacing:.02em;text-indent:0;text-transform:none;color:var(--ink-soft);animation-delay:1.3s}
.is-opening .envelope-kicker,.is-opening .envelope-hint{opacity:0;transition:opacity .4s}

.envelope{position:relative;display:block;width:var(--env-w);aspect-ratio:400/280;padding:0;border:0;background:none;-webkit-tap-highlight-color:transparent;animation:arrive 1.3s .1s var(--ease) both}
.envelope:focus-visible{outline-offset:10px;border-radius:6px}
.envelope-body{position:absolute;inset:0;display:block;perspective:calc(var(--env-w) * 2.8);perspective-origin:50% 0;animation:float 5.5s 1.6s ease-in-out infinite}
.envelope-body>*{position:absolute;display:block}
.envelope-shadow{position:absolute;left:6%;right:6%;bottom:-16px;height:26px;border-radius:50%;background:radial-gradient(closest-side,rgba(84,56,22,.28),transparent);filter:blur(4px);z-index:-1;animation:shadow 5.5s 1.6s ease-in-out infinite}
.is-opening .envelope-body,.is-opening .envelope-shadow{animation-play-state:paused}

.env-back,.env-pocket{inset:0;width:100%;height:100%}
.env-back{z-index:1;filter:drop-shadow(0 22px 26px rgba(84,56,22,.2)) drop-shadow(0 2px 3px rgba(84,56,22,.1))}
.env-pocket{z-index:3}

/* The letter waiting inside: invite.js fills it with a small copy of the card
   so the card can take its place without a seam. */
/* Clip the long sheet at the envelope's bottom, while leaving room above for
   extraction. The slot is twice the body's height: 52.5%/44% preserves the
   face's original 5%/88% position and size. The extra sheet matches its 70%
   travel, so paper stays tucked in the pocket through the card handoff. */
.letter-slot{z-index:2;left:0;right:0;top:-100%;bottom:0;overflow:hidden}
.letter{position:absolute;left:6%;right:6%;top:52.5%;height:44%;border-radius:2px;transition:transform 1s cubic-bezier(.3,.7,.2,1)}
.letter::before{content:"";position:absolute;inset:0 0 -70%;border-radius:inherit;background:var(--card) url("assets/garden/paper.webp");box-shadow:0 0 0 1px rgba(176,138,74,.3),0 6px 16px -8px rgba(84,56,22,.4)}
.letter-face{position:absolute;inset:0;overflow:hidden;border-radius:inherit}
.letter .card{position:absolute;left:0;top:0;margin:0;visibility:visible;transform-origin:0 0;box-shadow:none;animation:none}
.is-rising .letter{transform:translateY(-70%)}

/* Both faces occupy the same sheet, hinged at the body's top edge. The
   reverse face turns around Y so its triangular tip stays at the same point
   on the paper (turning it around X would put its base where the tip belongs).
   Keep the sheet in front throughout the turn; only extraction moves it
   behind the letter. Perspective scales with the envelope on small screens. */
.flap{z-index:4;left:0;top:0;width:100%;height:calc(100% * 170 / 280);transform-origin:50% 0;transform:rotateX(0);transform-style:preserve-3d;transition:transform .8s cubic-bezier(.45,.05,.25,1) .18s}
.flap svg{position:absolute;inset:0;width:100%;height:100%;backface-visibility:hidden;-webkit-backface-visibility:hidden}
.flap-front{filter:drop-shadow(0 3px 3px rgba(84,56,22,.13))}
.flap-inside{transform:rotateY(180deg)}
.flap-shade{opacity:0;transition:opacity .8s cubic-bezier(.45,.05,.25,1) .18s}
.flap-inside .flap-shade{opacity:.2}
.is-opening .flap{transform:rotateX(180deg)}
.is-opening .flap-front .flap-shade{opacity:.16}
.is-opening .flap-inside .flap-shade{opacity:.04}
.is-rising .flap{z-index:1}

/* A wax seal pressed with the monogram, rendered by tools/build_seal.py. */
.seal{z-index:5;left:50%;top:57%;width:23.2%;height:auto;transform:translate(-50%,-50%);filter:drop-shadow(0 1px 1px rgba(60,14,24,.4)) drop-shadow(0 4px 7px rgba(60,14,24,.18));transition:transform .35s var(--ease),opacity .35s ease .12s}
.envelope:hover .seal{transform:translate(-50%,-50%) scale(1.03)}
.envelope:active .seal{transform:translate(-50%,-50%) scale(.97)}
.is-opening .seal{transform:translate(-50%,-50%) scale(.94);opacity:0}

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

.stage{display:flex;align-items:center;justify-content:center;min-height:100vh;min-height:100svh;padding:max(48px,env(safe-area-inset-top)) 20px max(56px,env(safe-area-inset-bottom))}
.card{position:relative;width:min(100%,440px);padding:44px 34px 40px;border-radius:3px;text-align:center;background:var(--card) url("assets/garden/paper.webp");box-shadow:0 0 0 1px rgba(176,138,74,.26),0 40px 70px -46px rgba(84,56,22,.6),0 2px 4px rgba(84,56,22,.05)}
.card::before{content:"";position:absolute;inset:9px;border:1px solid rgba(176,138,74,.36);border-radius:2px;pointer-events:none}
.card::after{content:"";position:absolute;inset:13px;border:1px solid rgba(176,138,74,.16);border-radius:1px;pointer-events:none}
.card:focus{outline:none}
.is-sealed .stage .card:not(.is-unfolding){visibility:hidden}
.card.is-unfolding{z-index:11;visibility:visible;transform-origin:0 0;will-change:transform,clip-path}
.is-open .card{animation:card-in 1.1s var(--ease) both}
.card.is-unfolded{animation:none}

.card-monogram{display:block;width:58px;height:auto;margin:0 auto 16px;mix-blend-mode:multiply}
.card-eyebrow{font:500 11px/1.5 var(--display);letter-spacing:.34em;text-indent:.34em;text-transform:uppercase;color:var(--gold-deep)}
.card-names{margin:6px 0 0;font:400 clamp(60px,17vw,78px)/1.12 var(--script);color:var(--sepia);white-space:nowrap;word-spacing:.08em}
.card-names span{font-size:.6em;vertical-align:.12em;color:var(--gold)}
/* A hairline with a small gold diamond between the names and the place. */
.card-rule{position:relative;display:block;width:132px;height:9px;margin:10px auto 14px;background:linear-gradient(90deg,transparent,var(--gold) 30%,var(--gold) 70%,transparent) 0 50%/100% 1px no-repeat;opacity:.7}
.card-rule::after{content:"";position:absolute;left:50%;top:50%;width:7px;height:7px;margin:-3.5px 0 0 -3.5px;transform:rotate(45deg);border:1px solid var(--gold);background:var(--card)}
.card-place{font:500 11.5px/1.5 var(--display);letter-spacing:.34em;text-indent:.34em;text-transform:uppercase;color:var(--gold-deep)}

.card-fold{position:relative;margin-top:30px;padding-top:30px}
.card-fold::before{content:"";position:absolute;left:12%;right:12%;top:0;height:1px;background:linear-gradient(90deg,transparent,var(--rule) 20%,var(--rule) 80%,transparent)}
.card.is-unfolding .card-fold{animation:fade-up .9s .35s var(--ease) both}

/* ------------------------------------------------------------------- form */

.entry{display:flex;flex-direction:column;align-items:stretch;text-align:left}
.entry-intro{margin:0 0 22px;font:italic 500 20px/1.45 var(--serif);color:var(--ink-soft);text-align:center;text-wrap:balance}
.entry-label{font:500 11px/1.4 var(--display);letter-spacing:.24em;text-transform:uppercase;color:var(--gold-deep)}
.entry-input{width:100%;min-height:56px;margin-top:10px;padding:12px 18px;border:1px solid var(--gold-deep);border-radius:6px;background:rgba(255,253,248,.82);box-shadow:inset 0 1px 3px rgba(84,56,22,.08);color:var(--ink);font:500 22px/1.2 var(--display);font-variant-numeric:lining-nums;letter-spacing:.06em;transition:border-color .25s,box-shadow .25s,background-color .25s}
.entry-input:focus{outline:none;border-color:var(--gold-deep);background:#fffdf8;box-shadow:inset 0 1px 3px rgba(84,56,22,.08),0 0 0 3px rgba(216,189,134,.4)}
.entry-input[aria-invalid="true"]{border-color:var(--wine)}
.entry-input[aria-invalid="true"]:focus{box-shadow:inset 0 1px 3px rgba(84,56,22,.08),0 0 0 3px rgba(201,111,129,.25)}
/* The hint and the recognised country share one cell, so the field does not
   jump as the country appears. */
.entry-note{display:grid;margin-top:8px}
.entry-note>*{grid-area:1/1}
.entry-hint{font:500 17px/1.4 var(--serif);color:var(--ink-soft);transition:opacity .25s}
.entry-country{display:flex;align-items:flex-start;gap:8px;font:500 17px/1.4 var(--serif);color:var(--gold-deep);visibility:hidden;opacity:0;transition:opacity .25s,visibility 0s .25s}
.entry-country::before{content:"";flex:none;width:15px;height:15px;margin-top:4px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cg fill='none' stroke='%237f602b' stroke-width='1.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='8' cy='8' r='7'/%3E%3Cpath d='m5 8.2 2 2 4-4.4'/%3E%3C/g%3E%3C/svg%3E") center/contain no-repeat}
.entry-note.is-recognized .entry-hint{visibility:hidden;opacity:0}
.entry-note.is-recognized .entry-country{visibility:visible;opacity:1;transition:opacity .25s}
.entry-message{min-height:0;font:500 18px/1.4 var(--serif);color:var(--wine)}
.entry-message.is-shown{position:relative;margin-top:14px;padding:12px 16px 12px 42px;border-radius:6px;background:rgba(201,111,129,.08);box-shadow:inset 0 0 0 1px rgba(201,111,129,.25);animation:fade-up .45s var(--ease) both}
.entry-message.is-shown::before{content:"";position:absolute;left:15px;top:15px;width:16px;height:16px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cg fill='none' stroke='%238e3346' stroke-width='1.2'%3E%3Ccircle cx='8' cy='8' r='7'/%3E%3Cpath d='M8 4.4v4.6' stroke-linecap='round'/%3E%3C/g%3E%3Ccircle cx='8' cy='11.4' r='.9' fill='%238e3346'/%3E%3C/svg%3E") center/contain no-repeat}
.entry-message a{color:inherit}

.entry-button{position:relative;isolation:isolate;display:flex;align-items:center;justify-content:center;gap:12px;min-height:56px;margin-top:22px;padding:0 32px;overflow:hidden;border:1px solid var(--gold-deep);border-radius:999px;background:var(--gold-deep);box-shadow:inset 0 0 0 3px var(--gold-deep),inset 0 0 0 4px rgba(216,189,134,.6);color:var(--paper-light);font:500 12.5px/1 var(--display);letter-spacing:.32em;text-indent:.32em;text-transform:uppercase;transition:background-color .35s,box-shadow .35s,opacity .3s}
.entry-button::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(105deg,transparent 30%,rgba(255,240,205,.28) 50%,transparent 70%) -150% 0/60% 100% no-repeat;transition:background-position .9s var(--ease)}
.entry-button:hover{background:#6f5324;box-shadow:inset 0 0 0 3px #6f5324,inset 0 0 0 4px rgba(216,189,134,.7)}
.entry-button:hover::before{background-position:250% 0}
.entry-button:disabled{cursor:progress;opacity:.82}
.entry-button[aria-busy="true"]::after{content:"";width:14px;height:14px;border:1.5px solid rgba(252,247,238,.35);border-top-color:var(--paper-light);border-radius:50%;animation:spin .8s linear infinite}

/* ---------------------------------------------------------------- welcome */

.welcome{text-align:center;animation:fade-up .8s var(--ease) both}
.welcome-script{margin:0;font:400 64px/1.1 var(--script);color:var(--gold-deep)}
.welcome-script:focus{outline:none}
.welcome-name{margin-top:2px;font:400 26px/1.3 var(--display);color:var(--ink);text-wrap:balance}
.welcome-note{margin-top:14px;font:italic 500 19px/1.45 var(--serif);color:var(--ink-soft);text-wrap:balance}
.welcome-progress{display:block;width:140px;height:1px;margin:22px auto 4px;background:var(--rule);overflow:hidden}
.welcome-progress::after{content:"";display:block;height:100%;background:var(--gold);transform:scaleX(0);transform-origin:left;animation:progress 1.9s .2s cubic-bezier(.5,0,.3,1) forwards}

/* ---------------------------------------------------------------- motion */

@keyframes fade-in{from{opacity:0}}
@keyframes fade-up{from{opacity:0;transform:translateY(12px)}}
@keyframes arrive{from{opacity:0;transform:translateY(26px) rotate(-1.2deg) scale(.97)}}
@keyframes float{50%{transform:translateY(-6px) rotate(.25deg)}}
@keyframes shadow{50%{transform:scale(.92);opacity:.75}}
@keyframes card-in{from{opacity:0;transform:translateY(18px)}}
@keyframes spin{to{transform:rotate(1turn)}}
@keyframes progress{to{transform:scaleX(1)}}

/* ---------------------------------------------------------------- layout */

@media (max-width:759px){
  :root{--frame-inset:10px}
  .garden{--s:clamp(.24px, 100vw / 1536 * 1.34, .44px);background-image:url("assets/invite/garden-tl-small.webp"),url("assets/invite/garden-tr-small.webp"),url("assets/invite/garden-bl-small.webp"),url("assets/invite/garden-br-small.webp")}
}
/* Short screens, or a phone with its keyboard up: keep the field, any error
   and Continue close together. */
@media (max-height:880px) and (max-width:759px){
  .card-fold{margin-top:24px;padding-top:24px}
  .entry-intro{margin-bottom:16px}
  .entry-note{margin-top:6px}
  .entry-hint,.entry-country{font-size:16px}
  .entry-message.is-shown{margin-top:10px;padding:9px 14px 9px 40px;font-size:17px}
  .entry-message.is-shown::before{top:12px}
  .entry-button{margin-top:16px}
}
@media (max-width:400px){
  .card{padding:38px 24px 34px}
  .entry-intro{font-size:19px}
}
@media (min-width:760px){
  /* Grow the card downwards from a fixed top, so an error or the welcome
     does not shift it; the top centres the card as it first opens. */
  .stage{align-items:flex-start;padding:max(44px,(100vh - 780px) / 2) 24px 44px;padding-top:max(44px,(100svh - 780px) / 2)}
  .card{width:460px;padding:46px 48px 42px}
  .card-monogram{width:70px}
  .card-names{font-size:84px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;animation-delay:0s!important;transition-duration:0s!important;transition-delay:0s!important}
  .welcome-progress::after{transform:scaleX(1)}
}