/* Chữ vẽ tay: a long blush invitation strip of marker lettering and black doodles (the lines boil like hand-drawn
   animation). Every size inside the strip is in --u = strip width / 400. */
:root {
  --desk: #e7d5ca; --paper: #f3e8e0; --ink: #1b1918; --text: #3a3431; --olive: #7e8058; --olive-l: #8a8c64;
  --strip: min(100vw, clamp(400px, 44svh, 520px)); --u: calc(var(--strip) / 400);
  --hand: "Pangolin", "Patrick Hand", cursive; --note: "Patrick Hand", cursive;
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .35 0 0 0 0 .22 0 0 0 0 .18 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E");
}
@media (max-width: 480px) { :root { --strip: 100vw; } }
*, *::before, *::after { box-sizing: border-box; }
html { background: var(--desk); -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--note); color: var(--text); background: var(--desk); overflow-x: clip; }
body.locked { overflow: hidden; height: 100svh; }
::selection { background: #e9c9c0; color: var(--ink); }
button, input, select { font: inherit; color: inherit; }
.defs { position: absolute; width: 0; height: 0; }
.skip { position: fixed; left: 12px; top: -60px; z-index: 90; padding: 8px 14px; background: var(--paper); color: var(--ink); border: 2px solid var(--ink); border-radius: 8px; }
.skip:focus { top: 12px; }
.paper { background-color: var(--paper); background-image: var(--grain); }
.hand { font-family: var(--hand); font-weight: 400; color: var(--ink); letter-spacing: .02em; }
.hand .wd { white-space: nowrap; }
.hand .ch { display: inline-block; transform: translateY(var(--y, 0)) rotate(var(--r, 0deg)) scale(var(--s, 1)); }
.doo { display: block; color: var(--ink); pointer-events: none; }
.doo svg, [data-art] svg { display: block; width: 100%; height: auto; overflow: visible; }
.txt { margin: 0; font-size: calc(var(--u) * 17); line-height: 1.45; text-align: center; text-wrap: balance; }

/* lines boil: three wobble seeds swapped about eight times a second (only while on screen) */
body[data-boil="0"] .boil.on { filter: url(#b0); }
body[data-boil="1"] .boil.on { filter: url(#b1); }
body[data-boil="2"] .boil.on { filter: url(#b2); }

/* ---------- the strip ---------- */
.strip { position: relative; width: var(--strip); margin: 0 auto; overflow: clip; box-shadow: 0 40px 80px -40px rgba(90, 52, 40, .45), 0 2px 6px rgba(90, 52, 40, .08); }
@media (min-width: 481px) { .strip { margin: 48px auto; } }
section, header { position: relative; }
.sec-h { margin: 0; font-size: calc(var(--u) * 48); line-height: 1.12; text-align: center; }
.sec-h > .ln { display: block; }

/* ---------- opener: save the date ---------- */
.op { position: fixed; inset: 0; z-index: 40; display: flex; justify-content: center; background: var(--desk); }
.op.lift-off { background: transparent; transition: background .3s; }
.std { --u: min(calc(var(--strip) / 400), calc(100svh / 790)); position: relative; width: var(--strip); height: 100svh; display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: calc(var(--u) * 40) 0; text-align: center; transition: transform 1s cubic-bezier(.7,0,.2,1); }
.op.lift-off .std { transform: translateY(-104svh); }
.std-ttl { position: relative; width: calc(var(--u) * 330); margin-bottom: calc(var(--u) * 124); }
.std-h { margin: 0; font-size: calc(var(--u) * 100); line-height: .98; }
.std-h > .ln { display: block; }
.std-h > .ln:nth-child(2) { padding-left: calc(var(--u) * 54); }
.std .sprig { position: absolute; left: calc(var(--u) * 52); top: calc(var(--u) * -58); width: calc(var(--u) * 34); transform: rotate(-14deg); }
.std .cake-top { position: absolute; right: calc(var(--u) * 38); top: calc(var(--u) * -78); width: calc(var(--u) * 48); }
.std .martini { position: absolute; right: calc(var(--u) * 4); top: calc(var(--u) * 92); width: calc(var(--u) * 52); transform: rotate(8deg); }
.ball { position: absolute; left: calc(var(--u) * 92); top: calc(100% - var(--u) * 6); width: calc(var(--u) * 64); padding: 0; border: 0;
  background: none; cursor: pointer; transform-origin: 50% 0; animation: sway 3.2s ease-in-out infinite; }
.ball .string { display: block; width: 2px; height: calc(var(--u) * 16); margin: 0 auto -2px; background: var(--ink); border-radius: 1px; }
.ball .doo { width: 100%; }
.ball:focus-visible { outline: 2px dashed var(--ink); outline-offset: 4px; }
.ball.pull { animation: pull .9s cubic-bezier(.3,1.7,.4,1) forwards; }
@keyframes sway { 50% { transform: rotate(5deg); } }
@keyframes pull { 0% { transform: translateY(0); } 25% { transform: translateY(calc(var(--u) * 34)) rotate(-3deg); } 100% { transform: translateY(calc(var(--u) * 6)) rotate(14deg); } }
.std-t { margin: 0; font-size: calc(var(--u) * 19); line-height: 1.4; }
.std-d { margin: calc(var(--u) * 14) 0 calc(var(--u) * 10); font-size: calc(var(--u) * 26); }
.std-g { margin: 0; font-size: calc(var(--u) * 15); color: #7a6e68; }
/* party lights: coloured flecks thrown from the ball */
.lights { position: fixed; inset: 0; pointer-events: none; overflow: hidden; }
.lights i { position: absolute; width: var(--z); height: var(--z); border-radius: 50%; background: var(--c); opacity: 0;
  animation: fleck 1.3s cubic-bezier(.2,.7,.3,1) var(--d) forwards; }
@keyframes fleck { 15% { opacity: .9; } 100% { opacity: 0; transform: translate(var(--x), var(--y)) scale(.4); } }

/* ---------- nav: one sticker tag ---------- */
.tag { position: fixed; z-index: 30; top: calc(14px + env(safe-area-inset-top)); right: max(14px, calc((100vw - var(--strip)) / 2 + 14px));
  display: inline-flex; align-items: center; height: 38px; padding: 0 16px 0 22px; font-family: var(--hand); font-size: 16px; color: var(--ink);
  text-decoration: none; background: var(--paper); border: 2px solid var(--ink); border-radius: 6px 14px 14px 6px / 6px 18px 18px 6px;
  box-shadow: 3px 3px 0 var(--ink); transform: rotate(3deg); transition: transform .35s cubic-bezier(.3,1.5,.5,1), opacity .3s; }
.tag::before { content: ""; position: absolute; left: 8px; top: 50%; width: 7px; height: 7px; margin-top: -3.5px; border: 2px solid var(--ink); border-radius: 50%; }
.tag:hover { transform: rotate(-2deg) scale(1.05); }
.tag:focus-visible { outline: 2px dashed var(--ink); outline-offset: 4px; }
body.locked .tag, .tag.away { opacity: 0; pointer-events: none; transform: rotate(10deg) translateY(-20px); }

/* ---------- I. hero ---------- */
.hero { padding: calc(var(--u) * 236) calc(var(--u) * 24) calc(var(--u) * 70); text-align: center; }
.ttl { position: relative; width: calc(var(--u) * 352); margin: 0 auto; }
.ttl-h { margin: 0; font-size: calc(var(--u) * 64); line-height: 1.02; color: var(--olive); }
.ttl-h > .ln { display: block; white-space: nowrap; }
.hero .dance { position: absolute; left: calc(var(--u) * 150); bottom: calc(100% + var(--u) * 4); width: calc(var(--u) * 150); color: var(--olive); }
.hero .cake { position: absolute; left: calc(var(--u) * 46); top: calc(var(--u) * 120); width: calc(var(--u) * 46); color: var(--olive); }
.hero .glass { position: absolute; right: calc(var(--u) * 52); top: calc(var(--u) * 128); width: calc(var(--u) * 42); color: var(--olive); transform: rotate(10deg); }
.who { margin: calc(var(--u) * 40) 0 0; font-family: var(--hand); font-size: calc(var(--u) * 21); color: var(--ink); }
.sub { margin: 0 0 calc(var(--u) * 16); font-size: calc(var(--u) * 17); color: #7a6e68; }
.when { margin: calc(var(--u) * 18) 0 calc(var(--u) * 10); font-size: calc(var(--u) * 27); color: var(--olive); }

/* ---------- II. the lift + names + countdown ---------- */
.lift { padding: calc(var(--u) * 20) 0 calc(var(--u) * 70); }
.lift-art { position: relative; width: calc(var(--u) * 372); margin-left: calc(var(--u) * 12); aspect-ratio: 1659 / 1153; }
.names { position: absolute; left: calc(var(--u) * 28); top: calc(var(--u) * 182); margin: 0; font-size: calc(var(--u) * 42); line-height: 1.12; text-align: left; }
.names > .ln { display: block; white-space: nowrap; }
.count { margin-top: calc(var(--u) * 42); text-align: center; }
.count p { margin: 0; }
.count-k { font-size: calc(var(--u) * 17); color: #7a6e68; }
.count-n { display: flex; justify-content: center; align-items: baseline; gap: calc(var(--u) * 6); margin: calc(var(--u) * 4) 0 !important; font-size: calc(var(--u) * 16); }
.count-n b { font-weight: 400; font-size: calc(var(--u) * 44); font-variant-numeric: tabular-nums; color: var(--olive); }
.count-n span { margin-right: calc(var(--u) * 8); }

/* ---------- III. timeline ---------- */
.plan { padding: calc(var(--u) * 20) calc(var(--u) * 16) calc(var(--u) * 80); }
.line { position: relative; display: grid; grid-template-columns: 1fr 1fr; grid-auto-rows: calc(var(--u) * 52); margin: calc(var(--u) * 34) 0 0; padding: 0; list-style: none; }
.line::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 2.5px; margin-left: -1.25px; background: var(--ink); border-radius: 2px;
  transform-origin: 50% 0; transform: scaleY(var(--p, 1)); }
.it { display: flex; align-items: center; gap: calc(var(--u) * 8); grid-row: var(--r) / span 2; }
.it p { margin: 0; font-family: var(--hand); font-size: calc(var(--u) * 14.5); line-height: 1.25; text-transform: uppercase; letter-spacing: .03em; color: var(--ink); }
.it b { display: block; font-weight: 400; font-size: calc(var(--u) * 13); color: var(--olive); }
.it .doo { flex: none; width: calc(var(--u) * 56); }
.it::after { content: ""; flex: none; width: calc(var(--u) * 20); height: 2.5px; background: var(--ink); border-radius: 2px; }
.it.l { grid-column: 1; justify-content: flex-end; text-align: right; }
.it.r { grid-column: 2; flex-direction: row-reverse; justify-content: flex-end; text-align: left; }
.it:nth-child(1) { --r: 1; } .it:nth-child(2) { --r: 2; } .it:nth-child(3) { --r: 3; } .it:nth-child(4) { --r: 4; } .it:nth-child(5) { --r: 5; } .it:nth-child(6) { --r: 6; }
.it:nth-child(n) { margin-block: calc(var(--u) * 4); }
.it .doo[data-art=car] { width: calc(var(--u) * 52); }
.it .doo[data-art=i-dance] { width: calc(var(--u) * 66); }
.js .it:not(.in) { opacity: 0; transform: translateX(calc(var(--u) * var(--dx, -16))); }
.js .it.r:not(.in) { --dx: 16; }
.js .it.in { transition: opacity .6s, transform .7s cubic-bezier(.3,1.5,.5,1); }

/* ---------- IV. getting there ---------- */
.go { padding: 0 calc(var(--u) * 32) calc(var(--u) * 80); text-align: center; }
.road { position: relative; height: calc(var(--u) * 210); display: flex; justify-content: center; align-items: flex-end; }
.road::after { content: ""; position: absolute; left: 12%; right: 12%; bottom: calc(var(--u) * 6); height: 2.5px; background: var(--ink); border-radius: 2px; opacity: .85; }
.car-run { width: calc(var(--u) * 190); transform-origin: 50% 100%; will-change: transform; }
.go .sec-h { margin-top: calc(var(--u) * 34); }
.facts { margin: calc(var(--u) * 22) 0 0; display: grid; gap: calc(var(--u) * 16); }
.facts div { display: grid; gap: calc(var(--u) * 2); }
.facts dt { font-family: var(--hand); font-size: calc(var(--u) * 15); letter-spacing: .08em; text-transform: uppercase; color: var(--olive); }
.facts dd { margin: 0; font-size: calc(var(--u) * 17); line-height: 1.4; text-wrap: balance; }
.sw { display: flex; justify-content: center; gap: calc(var(--u) * 10); margin: calc(var(--u) * 14) 0 calc(var(--u) * 28); padding: 0; list-style: none; }
.sw li { width: calc(var(--u) * 30); aspect-ratio: 1; background: var(--c); border: 2px solid var(--ink); border-radius: 48% 52% 46% 54% / 52% 46% 54% 48%; }
.btn { display: inline-flex; align-items: center; justify-content: center; height: calc(var(--u) * 46); padding: 0 calc(var(--u) * 26);
  font-family: var(--hand); font-size: calc(var(--u) * 18); color: var(--ink); text-decoration: none; white-space: nowrap; cursor: pointer;
  background: var(--paper); border: 2px solid var(--ink); border-radius: 255px 15px 225px 15px / 15px 225px 15px 255px;
  box-shadow: 3px 3px 0 var(--ink); transition: transform .2s, box-shadow .2s; }
.btn:hover { transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--ink); }
.btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.btn:focus-visible { outline: 2px dashed var(--ink); outline-offset: 5px; }

/* ---------- V. the bar ---------- */
.bar { padding: calc(var(--u) * 50) 0 calc(var(--u) * 90); text-align: center; }
.hand-g { position: absolute; display: block; color: var(--ink); transition: transform .2s linear; }
.g1 { left: calc(var(--u) * -4); top: calc(var(--u) * 186); width: calc(var(--u) * 96); transform-origin: 0 100%; }
.g2 { right: calc(var(--u) * -6); top: calc(var(--u) * 236); width: calc(var(--u) * 90); transform-origin: 100% 100%; }
.g3 { left: calc(var(--u) * -6); top: calc(var(--u) * 420); width: calc(var(--u) * 72); transform-origin: 0 100%; }
.g4 { right: calc(var(--u) * -6); top: calc(var(--u) * 470); width: calc(var(--u) * 100); transform-origin: 100% 100%; }
.g1, .g3 { rotate: calc(var(--t, 0) * 14deg); } .g2, .g4 { rotate: calc(var(--t, 0) * -14deg); }
.menu { width: calc(var(--u) * 230); margin: calc(var(--u) * 26) auto 0; }
.menu h3 { margin: calc(var(--u) * 20) 0 calc(var(--u) * 4); font-size: calc(var(--u) * 20); letter-spacing: .12em; }
.menu p { margin: 0; font-size: calc(var(--u) * 16.5); line-height: 1.45; }

/* ---------- VI. dinner ---------- */
.dine { padding: calc(var(--u) * 10) calc(var(--u) * 20) calc(var(--u) * 90); text-align: center; }
.row { display: flex; justify-content: center; align-items: flex-end; gap: calc(var(--u) * 10); height: calc(var(--u) * 74); margin-bottom: calc(var(--u) * 24); }
.row .doo { height: 100%; }
.row .doo svg { width: auto; height: 100%; }
.row .doo:nth-child(1), .row .doo:nth-child(5) { height: 80%; }
.row .doo:nth-child(3) { height: 70%; }
.sec-h.big { font-size: calc(var(--u) * 62); }
.dine .menu { width: calc(var(--u) * 300); }

/* ---------- VII. reply ---------- */
.rsvp { padding: calc(var(--u) * 10) calc(var(--u) * 36) calc(var(--u) * 60); text-align: center; }
.bq { width: calc(var(--u) * 66); margin: 0 auto calc(var(--u) * 8); }
.please { margin: 0 0 calc(var(--u) * 2); font-family: var(--note); font-size: calc(var(--u) * 26); line-height: 1; color: var(--olive); transform: rotate(-10deg) translateX(calc(var(--u) * -118)); }
.rsvp-h { margin: 0 0 calc(var(--u) * 6); font-size: calc(var(--u) * 92); line-height: 1.05; color: var(--olive); }
.form { display: grid; gap: calc(var(--u) * 18); margin-top: calc(var(--u) * 28); text-align: left; }
.f { display: grid; gap: calc(var(--u) * 2); margin: 0; padding: 0; border: 0; min-width: 0; }
.f > span, .f legend { font-family: var(--hand); font-size: calc(var(--u) * 14); letter-spacing: .08em; text-transform: uppercase; color: var(--olive); padding: 0; }
.f input:not([type=radio]), .f select { width: 100%; padding: calc(var(--u) * 6) 2px; border: 0; border-bottom: 2px solid var(--ink); border-radius: 0 0 4px 12px / 0 0 3px 4px;
  background: transparent; font-family: var(--note); font-size: max(16px, calc(var(--u) * 19)); color: var(--ink); outline: none; }
.f input::placeholder { color: #a89c95; }
.f input:focus, .f select:focus { border-bottom-style: dashed; }
.f select { appearance: none; cursor: pointer;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 10'%3E%3Cpath d='M1.5 2.2c2 1.6 3.6 3.9 5.4 5.8 1.7-2.2 3.5-4.2 5.6-6' fill='none' stroke='%231b1918' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E") right 4px center / 14px no-repeat; }
.f-n { width: calc(var(--u) * 140); }
.chips { display: flex; flex-wrap: wrap; gap: calc(var(--u) * 10); }
.chips legend { width: 100%; margin-bottom: calc(var(--u) * 6); }
.chips label { position: relative; cursor: pointer; }
.chips input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.chips span { display: inline-flex; align-items: center; height: calc(var(--u) * 38); padding: 0 calc(var(--u) * 16); font-family: var(--hand); font-size: calc(var(--u) * 16);
  border: 2px solid var(--ink); border-radius: 15px 225px 15px 255px / 255px 15px 225px 15px; white-space: nowrap; transition: background .2s; }
.chips input:checked + span { background: #e9c9c0; }
.chips input:focus-visible + span { outline: 2px dashed var(--ink); outline-offset: 3px; }
.form .btn { justify-self: center; margin-top: calc(var(--u) * 8); }
.done { padding-top: calc(var(--u) * 24); outline: none; }
.done[hidden] { display: none; }
.done .hand { margin: 0 0 calc(var(--u) * 6); font-size: calc(var(--u) * 34); color: var(--olive); }
.done .btn { margin-top: calc(var(--u) * 18); }

/* ---------- end ---------- */
.end { padding: calc(var(--u) * 10) 0 0; text-align: center; }
.cheers { margin: 0; font-size: calc(var(--u) * 54); }
.toast { width: calc(var(--u) * 392); margin: calc(var(--u) * 6) 0 0 calc(var(--u) * 4); }
.end-c { margin: 0; padding: calc(var(--u) * 18) calc(var(--u) * 30) calc(var(--u) * 26); font-size: calc(var(--u) * 13.5); color: #8a7d76; }
#hoi-am { scroll-margin-top: 20px; }

/* ---------- entrances ---------- */
.js .pop:not(.in) { opacity: 0; transform: scale(.55) rotate(-8deg); }
.js .pop.in { transition: opacity .4s, transform .75s cubic-bezier(.3,1.6,.45,1); }
.js .glass.pop:not(.in) { transform: scale(.55) rotate(30deg); }
.js .glass.pop.in { transform: rotate(10deg); }
.js .lt .ch { opacity: 0; translate: 0 -.5em; }
.js .lt.in .ch { opacity: 1; translate: 0 0; transition: opacity .25s calc(var(--i) * 45ms), translate .5s cubic-bezier(.3,1.8,.5,1) calc(var(--i) * 45ms); }
.js .rv:not(.in) { opacity: 0; transform: translateY(calc(var(--u) * 10)); }
.js .rv.in { transition: opacity .7s, transform .7s cubic-bezier(.2,.7,.2,1); }

@media (prefers-reduced-motion: reduce) {
  .ball { animation: none; }
  .js .pop, .js .lt .ch, .js .rv, .js .it { opacity: 1 !important; transform: none !important; translate: none !important; }
  .std, .tag { transition: none; }
}

/* the reply form hides once sent (its display: grid would otherwise override [hidden]) */
.form[hidden] { display: none; }