*,
*::before,
*::after {
  box-sizing: border-box;
}

@font-face {
  font-family: "Autograph";
  src: url("autograph.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #0e0c09;
  --ink-soft: #454038;
  --bronze: #9a7b4f;
  --paper: #f0e8da;
  --bg-fallback: #141008;
  --texture-bg: url("img/bg.jpg");
  --texture-paper: url("img/paper.webp");
  --ruled: 26px;
  --rule-shift: -4px;
  --type-size: 15px;
  --typewriter: "Special Elite", "Courier New", Courier, monospace;
  --signature: "Autograph", cursive;
  --selection-bg: #3d2e1e;
  --selection-fg: #f8f2e8;
  --letter-width: min(100%, 44rem);
  --letter-pad-x: 2.75rem;
  --letter-pad-y: 3.25rem;
  --letter-pad-bottom: 3.75rem;
}

::selection {
  background: var(--selection-bg);
  color: var(--selection-fg);
}

::-moz-selection {
  background: var(--selection-bg);
  color: var(--selection-fg);
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--typewriter);
  font-size: var(--type-size);
  background: var(--bg-fallback) var(--texture-bg) center / cover no-repeat scroll;
  -webkit-font-smoothing: auto;
  -moz-osx-font-smoothing: auto;
}

.desk {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 4rem 1.5rem 5.5rem;
}

.letter-shell {
  position: relative;
  width: var(--letter-width);
  isolation: isolate;
}

.letter-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  clip-path: url(#paper-edge);
  transform: translate(5px, 8px);
  filter: blur(8px);
  pointer-events: none;
  z-index: 0;
}

.letter-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  clip-path: url(#paper-edge);
  transform: translate(14px, 22px);
  filter: blur(22px);
  pointer-events: none;
  z-index: 0;
}

.letter {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: var(--letter-pad-y) var(--letter-pad-x) var(--letter-pad-bottom);
  background-color: var(--paper);
  background-image: var(--texture-paper);
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  clip-path: url(#paper-edge);
}

.letter::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background:
    linear-gradient(
      118deg,
      rgba(255, 245, 220, 0.65) 0%,
      rgba(255, 235, 200, 0.28) 18%,
      rgba(255, 225, 185, 0.1) 36%,
      transparent 58%
    ),
    linear-gradient(to bottom, transparent 76%, rgba(14, 12, 9, 0.06) 100%),
    linear-gradient(to right, transparent 78%, rgba(14, 12, 9, 0.055) 100%);
}

.letter::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  box-shadow:
    inset 14px 16px 36px rgba(255, 248, 235, 0.35),
    inset -10px -14px 28px rgba(14, 12, 9, 0.07);
}

.letterhead {
  position: relative;
  z-index: 3;
  display: flex;
  justify-content: center;
  margin-bottom: calc(var(--ruled) * 1.5);
}

.letterhead__mark {
  display: block;
  height: 4.25rem;
  width: auto;
}

.letter__content {
  position: relative;
  z-index: 3;
  line-height: var(--ruled);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent calc(var(--ruled) - 1px),
    rgba(14, 12, 9, 0.05) calc(var(--ruled) - 1px),
    rgba(14, 12, 9, 0.05) var(--ruled)
  );
  background-position: 0 var(--rule-shift);
}

.letter__meta,
.letter__body,
.signoff {
  position: relative;
}

.letter__meta {
  text-align: right;
  margin-bottom: var(--ruled);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.letter__body p {
  margin: 0 0 var(--ruled);
  line-height: var(--ruled);
  letter-spacing: 0.04em;
  word-spacing: 0.06em;
  text-align: left;
}

.letter__lines {
  hyphens: none;
}

.letter__tease {
  margin: 0;
  padding: 0;
  text-align: center;
  line-height: 0;
}

.letter__tease img {
  display: block;
  width: min(100%, 22rem);
  margin-inline: auto;
  height: auto;
}

.letter__closing .letter__tease,
.letter__closing p,
.letter__closing .letter__signup {
  margin-bottom: calc(var(--ruled) * 0.65);
}

.letter__closing .letter__signup-note,
.letter__closing .letter__signup-success {
  margin-bottom: 0;
}

.letter__signup {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  max-width: 24rem;
  line-height: var(--ruled);
}

.letter__signup-label {
  flex-shrink: 0;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.letter__signup-input {
  flex: 1;
  min-width: 10rem;
  padding: 0 0.125rem;
  border: none;
  border-bottom: 1px solid rgba(14, 12, 9, 0.35);
  background: transparent;
  font: inherit;
  color: var(--ink);
  letter-spacing: 0.02em;
  outline: none;
  border-radius: 0;
}

.letter__signup-input::placeholder {
  color: var(--ink-soft);
  opacity: 0.8;
}

.letter__signup-input:focus-visible {
  border-bottom-color: var(--ink);
  outline: 1px solid rgba(14, 12, 9, 0.15);
  outline-offset: 2px;
}

.letter__signup-submit {
  flex-shrink: 0;
  padding: 0 0 0.125rem;
  border: none;
  border-bottom: 1px solid rgba(14, 12, 9, 0.35);
  background: transparent;
  font: inherit;
  color: var(--ink);
  letter-spacing: 0.06em;
  line-height: var(--ruled);
  cursor: pointer;
}

.letter__signup-submit:hover {
  border-bottom-color: var(--ink);
}

.letter__signup-submit:focus-visible {
  outline: 1px solid rgba(14, 12, 9, 0.15);
  outline-offset: 2px;
}

.letter__signup-submit:disabled {
  opacity: 0.45;
  cursor: wait;
}

.letter__signup-honey {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

.letter__signup-note,
.letter__signup-success {
  margin: 0 0 var(--ruled);
  line-height: var(--ruled);
  color: var(--ink-soft);
}

.letter__signup-success {
  color: var(--ink);
}

.signoff {
  margin-top: calc(var(--ruled) * 2);
  padding-top: var(--ruled);
}

.signoff__line {
  margin: 0 0 var(--ruled);
  line-height: var(--ruled);
  letter-spacing: 0.04em;
}

.signoff__signature {
  margin: calc(var(--ruled) * 0.5) 0 0;
  font-family: var(--signature);
  font-size: 2.75rem;
  line-height: 1.1;
  font-weight: 400;
  color: var(--ink);
  transform: translateX(0.35rem);
}

@media (min-width: 641px) {
  :root {
    --letter-width: min(100%, 56rem);
    --letter-pad-x: 4.25rem;
    --letter-pad-y: 4.25rem;
    --letter-pad-bottom: 5rem;
    --type-size: 16px;
    --ruled: 28px;
    --rule-shift: -5px;
  }

  .desk {
    padding: 5.5rem 2.5rem 7.5rem;
  }

  .letter__tease img {
    width: min(100%, 30rem);
  }
}

@media (min-width: 1024px) {
  :root {
    --letter-pad-x: 5.5rem;
  }

  .desk {
    padding: 5.5rem 3rem 7.5rem;
  }
}

@media (max-width: 640px) {
  :root {
    --letter-width: 100%;
    --letter-pad-x: 1.75rem;
    --letter-pad-y: 2.75rem;
    --letter-pad-bottom: 3.5rem;
  }

  .desk {
    padding: 2.75rem 1rem 5rem;
  }

  .letterhead__mark {
    height: 3.5rem;
  }

  .letter__meta {
    text-align: left;
  }
}

@media print {
  body {
    background: white;
  }

  .desk {
    padding: 0;
  }

  .letter-shell {
    width: 100%;
    max-width: none;
  }

  .letter-shell::before,
  .letter-shell::after {
    display: none;
  }

  .letter {
    clip-path: none;
    width: 100%;
    max-width: none;
    background-image: none;
  }

  .letter::before,
  .letter::after {
    display: none;
  }

  .letter__tease {
    display: none;
  }
}

.defs {
  position: absolute;
  overflow: hidden;
}