:root {
  color-scheme: light;
  --paper: #f3efe5;
  --earth: #e6ddca;
  --ink: #292821;
  --quiet: #746f63;
  --rust: #9d4938;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Georgia, "Times New Roman", serif;
}

.lot {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  background:
    linear-gradient(to bottom, transparent 0 69%, rgba(145, 119, 80, .025) 75%, rgba(145, 119, 80, .085) 88%, rgba(132, 103, 65, .14) 100%),
    radial-gradient(ellipse 44% 24% at 58% 103%, rgba(176, 151, 108, .075), transparent 72%),
    radial-gradient(ellipse 72% 18% at 12% 76%, rgba(185, 164, 123, .035), transparent 72%),
    radial-gradient(ellipse 66% 16% at 92% 72%, rgba(185, 164, 123, .028), transparent 74%),
    linear-gradient(to bottom, transparent 0 59%, rgba(196, 179, 146, .018) 64%, rgba(196, 179, 146, .065) 72%, rgba(196, 179, 146, .13) 100%),
    var(--paper);
}

.lot::after {
  content: "";
  position: absolute;
  z-index: 0;
  top: 57%;
  left: -3%;
  width: 106%;
  height: 22%;
  background:
    radial-gradient(ellipse 48% 38% at 18% 62%, rgba(151, 132, 98, .035), transparent 70%),
    radial-gradient(ellipse 56% 35% at 72% 48%, rgba(151, 132, 98, .042), transparent 72%),
    radial-gradient(ellipse 82% 11% at 51% 52%, rgba(131, 117, 91, .065), transparent 72%),
    linear-gradient(to bottom, transparent, rgba(151, 132, 98, .025) 48%, transparent);
  filter: blur(8px);
}

.identity {
  position: absolute;
  z-index: 2;
  top: clamp(4rem, 13vh, 8rem);
  left: 50%;
  width: calc(100% - 3rem);
  text-align: center;
  transform: translateX(-50%);
}

h1 {
  margin: 0;
  font-size: clamp(.92rem, 1.45vw, 1.12rem);
  font-weight: 400;
  letter-spacing: .24em;
  line-height: 1.4;
  text-transform: uppercase;
}

.identity p {
  margin: .9rem 0 0;
  color: var(--quiet);
  font-size: clamp(.86rem, 1.2vw, .98rem);
  font-style: italic;
}

.boundary {
  position: absolute;
  z-index: 1;
  right: 0;
  bottom: -1.1rem;
  left: 0;
  height: clamp(28rem, 58vw, 47rem);
  overflow: hidden;
  pointer-events: none;
}

.boundary img {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: max(100%, 68rem);
  height: 100%;
  object-fit: fill;
  opacity: .82;
  transform: translateX(-50%);
  transform-origin: 50% 100%;
}

.mailbox {
  position: absolute;
  z-index: 2;
  left: 70%;
  bottom: .15rem;
  width: clamp(9rem, 14vw, 11.5rem);
  height: auto;
  padding: 0;
  border: 0;
  color: inherit;
  background: none;
  cursor: pointer;
  transform: translateX(-50%);
  transform-origin: 50% 100%;
}

.mailbox img { display: block; width: 100%; height: auto; }
.mailbox-raised, .mailbox-open { position: absolute; inset: 0; opacity: 0; transition: opacity 300ms ease; }
.mailbox-rest { transition: opacity 300ms ease; }
.mailbox.is-open .mailbox-open { opacity: 1; }
.mailbox.is-open .mailbox-rest,
.mailbox.is-open .mailbox-raised { opacity: 0; }
.mailbox.has-mail .mailbox-raised { opacity: 1; }
.mailbox.has-mail .mailbox-rest,
.mailbox.has-mail .mailbox-open { opacity: 0; }
.mailbox:focus-visible { outline: 1px solid rgba(41, 40, 33, .65); outline-offset: .65rem; }

dialog {
  width: min(30rem, calc(100% - 2rem));
  padding: 0;
  border: 0;
  color: var(--ink);
  background: transparent;
}

dialog::backdrop { background: rgba(54, 50, 42, .22); backdrop-filter: blur(1.5px); }

.letter {
  position: relative;
  padding: clamp(2rem, 6vw, 3.25rem);
  border: 1px solid rgba(71, 65, 52, .17);
  background: #f8f4e9;
  box-shadow: 0 1.4rem 4rem rgba(56, 49, 36, .14);
}

.close {
  position: absolute;
  top: .65rem;
  right: .8rem;
  padding: .25rem .4rem;
  border: 0;
  color: var(--quiet);
  background: none;
  font: 1.35rem/1 Georgia, serif;
  cursor: pointer;
}

h2 { margin: 0 0 2rem; font-size: 1.08rem; font-weight: 400; }
label { display: block; margin: 1rem 0 .35rem; font-size: .83rem; letter-spacing: .04em; }
label span { color: var(--quiet); font-size: .76rem; font-style: italic; }

input, textarea {
  display: block;
  width: 100%;
  padding: .55rem .1rem;
  border: 0;
  border-bottom: 1px solid rgba(50, 47, 39, .35);
  border-radius: 0;
  color: var(--ink);
  background: transparent;
  font: 1rem/1.5 Georgia, serif;
}

textarea { resize: vertical; }
input:focus, textarea:focus { outline: 0; border-bottom-color: var(--ink); }

.send {
  margin-top: 1.6rem;
  padding: .55rem 1.15rem;
  border: 1px solid rgba(50, 47, 39, .65);
  color: var(--ink);
  background: transparent;
  font: .82rem Georgia, serif;
  cursor: pointer;
}

.send:hover, .send:focus-visible { color: var(--paper); background: var(--ink); }
.status { min-height: 1.2em; margin: .8rem 0 0; color: var(--quiet); font-size: .78rem; }
.received { margin: 2rem 0; text-align: center; font-size: 1.05rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 38rem) {
  .identity { top: 10vh; }
  h1 { letter-spacing: .16em; }
  .boundary { height: 33rem; }
  .boundary img { left: 52%; width: 76rem; }
  .mailbox { left: 72%; width: 8.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  .mailbox img { transition: none; }
}