:root {
  color-scheme: light;
  --ink: #3d3830;
  --slate: #4e5a68;
  --paper: #faf7f2;
  --paper-deep: #f1ebe2;
  --line: rgba(78, 90, 104, 0.18);
  --shadow: rgba(61, 56, 48, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--paper);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: Georgia, 'Times New Roman', serif;
  background:
    linear-gradient(rgba(250, 247, 242, 0.88), rgba(250, 247, 242, 0.88)),
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 31px,
      rgba(78, 90, 104, 0.07) 31px,
      rgba(78, 90, 104, 0.07) 32px
    );
}

button,
audio {
  font: inherit;
}

.page-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.letter {
  position: relative;
  width: min(100%, 620px);
  min-height: 430px;
  padding: clamp(32px, 8vw, 64px);
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: 0 20px 60px var(--shadow);
}

.fold {
  position: absolute;
  top: -1px;
  right: -1px;
  width: 58px;
  height: 58px;
  background: linear-gradient(225deg, var(--paper-deep) 49%, var(--line) 50%, var(--paper) 52%);
}

.letter-header {
  display: flex;
  align-items: center;
  gap: 20px;
}

.archive-mark {
  width: 68px;
  height: 68px;
  flex: 0 0 68px;
  display: grid;
  place-items: center;
  border: 1px solid var(--slate);
  border-radius: 50%;
  outline: 1px solid rgba(78, 90, 104, 0.32);
  outline-offset: 4px;
  color: var(--slate);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--slate);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  max-width: 360px;
  margin: 0;
  font-size: clamp(32px, 8vw, 48px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.rule {
  width: 100%;
  height: 1px;
  margin: 40px 0 34px;
  background: linear-gradient(90deg, var(--slate), transparent);
  opacity: 0.42;
}

.playback {
  min-height: 118px;
}

.status {
  margin: 0 0 20px;
  color: var(--slate);
  font-size: 18px;
  line-height: 1.5;
}

.status[data-state='error'] {
  color: #8a3f35;
}

.player {
  width: 100%;
  height: 54px;
  accent-color: var(--slate);
}

.retry {
  min-height: 44px;
  padding: 10px 18px;
  color: var(--paper);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 14px;
  font-weight: 700;
  background: var(--slate);
  border: 1px solid var(--slate);
  border-radius: 2px;
  cursor: pointer;
}

.retry:hover {
  background: var(--ink);
  border-color: var(--ink);
}

.retry:focus-visible {
  outline: 3px solid rgba(78, 90, 104, 0.32);
  outline-offset: 3px;
}

.privacy-note {
  margin: 42px 0 0;
  padding-top: 18px;
  color: var(--slate);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  line-height: 1.6;
  border-top: 1px solid var(--line);
}

.noscript {
  position: fixed;
  inset: auto 16px 16px;
  margin: 0;
  padding: 12px;
  color: var(--paper);
  background: var(--ink);
  font-family: ui-sans-serif, system-ui, sans-serif;
  text-align: center;
}

[hidden] {
  display: none !important;
}

@media (max-width: 520px) {
  .page-shell {
    align-items: stretch;
    padding: 0;
  }

  .letter {
    min-height: 100vh;
    padding: 40px 24px;
    border: 0;
    box-shadow: none;
  }

  .letter-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .archive-mark {
    width: 56px;
    height: 56px;
    flex-basis: 56px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .letter {
    animation: letter-arrive 360ms ease-out both;
  }

  @keyframes letter-arrive {
    from {
      opacity: 0;
      transform: translateY(6px);
    }
  }
}