@font-face {
  font-family: "Atkinson";
  src: url("/assets/fonts/atkinson-regular.woff") format("woff");
  font-display: swap;
  font-style: normal;
  font-weight: 400;
}

@font-face {
  font-family: "Atkinson";
  src: url("/assets/fonts/atkinson-bold.woff") format("woff");
  font-display: swap;
  font-style: normal;
  font-weight: 700;
}

:root {
  color-scheme: light;
  background: #f6f6f1;
  color: #15211d;
  font-family: "Atkinson", system-ui, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: #f6f6f1;
}

body {
  position: relative;
  min-width: 320px;
  min-height: 100svh;
  margin: 0;
  isolation: isolate;
  overflow-x: hidden;
  background: #f6f6f1;
  color: #15211d;
  -webkit-font-smoothing: antialiased;
}

body::before,
body::after {
  position: fixed;
  inset: -4%;
  pointer-events: none;
  content: "";
}

body::before {
  z-index: -2;
  background: url("/assets/field-4.webp") center / cover no-repeat;
  filter: saturate(.68) contrast(.92) brightness(1.18) blur(8px);
  opacity: .8;
  transform: scale(1.06);
}

body::after {
  z-index: -1;
  background: linear-gradient(90deg, rgba(246, 246, 241, .92), rgba(246, 246, 241, .76) 58%, rgba(246, 246, 241, .88));
}

.letter-page {
  min-height: 100svh;
  padding: clamp(4.5rem, 13vh, 9rem) clamp(1.25rem, 4vw, 3rem) clamp(5rem, 12vh, 9rem);
}

.letter {
  position: relative;
  width: min(100%, 49rem);
  margin: 0 auto;
  color: #15211d;
}

.letter-summary__title,
.letter-summary__body {
  display: block;
}

.letter h1 {
  margin: 0 0 2.8rem;
  color: #15211d;
  font-size: clamp(1.2rem, 1.7vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1.35;
}

.letter p {
  margin: 0 0 1.35rem;
  color: rgba(21, 33, 29, .82);
  font-size: clamp(1rem, 1.15vw, 1.12rem);
  font-weight: 400;
  line-height: 1.76;
}

.letter strong {
  color: #15211d;
  font-weight: 700;
}

.letter em {
  color: rgba(21, 33, 29, .86);
}

.letter-read-full {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  margin-top: 1.25rem;
  color: #15211d;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
  border-bottom: 1px solid rgba(21, 33, 29, .62);
}

.letter-read-full:hover {
  border-bottom-color: #15211d;
}

.letter-read-full:focus-visible,
.letter-back-summary:focus-visible {
  outline: 2px solid #15211d;
  outline-offset: .35rem;
}

.letter-back-summary {
  position: fixed;
  z-index: 3;
  top: clamp(1rem, 2.5vw, 2rem);
  right: clamp(1rem, 3vw, 3rem);
  display: inline-flex;
  align-items: center;
  min-height: 2.45rem;
  padding: .55rem .85rem;
  color: #15211d;
  background: rgba(246, 246, 241, .74);
  border: 1px solid rgba(21, 33, 29, .24);
  border-radius: 999px;
  box-shadow: 0 .35rem 1.2rem rgba(21, 33, 29, .1);
  font-size: .85rem;
  font-weight: 700;
  text-decoration: none;
  backdrop-filter: blur(12px);
}

.letter-page--full {
  padding-top: clamp(4.75rem, 9vw, 8rem);
  padding-bottom: clamp(4rem, 9vw, 8rem);
}

.letter-page--full .letter h1 {
  margin-bottom: 2.8rem;
}

.letter-page--full .letter p:last-child {
  margin-bottom: 0;
}

/* The short letter keeps the original single-column letter composition, but tightens
   measure, leading, and paragraph rhythm so it reads as one quiet page. */
.letter-page--summary {
  display: grid;
  place-items: center;
  padding-top: clamp(2rem, 4vh, 3rem);
  padding-bottom: clamp(2rem, 4vh, 3rem);
}

.letter-page--summary .letter {
  width: min(100%, 50rem);
}

.letter-page--summary .letter h1 {
  margin-bottom: 1.2rem;
  font-size: clamp(1.15rem, 1.65vw, 1.5rem);
  line-height: 1.32;
}

.letter-page--summary .letter p {
  margin-bottom: .5rem;
  font-size: clamp(.84rem, .95vw, 1rem);
  line-height: 1.45;
}

.letter-page--summary .letter-read-full {
  margin-top: .65rem;
  font-size: clamp(.84rem, .95vw, 1rem);
}

@media (max-width: 600px) {
@media (max-width: 600px) {
  .letter-page {
    padding-top: 3.2rem;
    padding-bottom: 4rem;
  }

  .letter h1 {
    margin-bottom: 2.2rem;
    font-size: 1.15rem;
  }

  .letter p {
    font-size: 1rem;
    line-height: 1.7;
  }

  .letter-back-summary {
    top: .75rem;
    right: .75rem;
    min-height: 2.25rem;
    font-size: .78rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }
}