:root {
  color-scheme: light;

  --paper: #e9e1cb;
  --paper-dark: #d7cdb4;
  --ink: #29271f;
  --faded-ink: #595548;
  --pencil: #676258;
  --red-pencil: #8a3d32;
  --desk: #35322b;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;

  background:
    linear-gradient(
      115deg,
      rgba(255, 255, 255, 0.025),
      transparent 40%
    ),
    #35322b;

  color: var(--ink);

  font-family:
    Georgia,
    "Times New Roman",
    serif;
}

button {
  font: inherit;
}

.book {
  width: 100%;
  min-height: 100dvh;

  padding:
    max(2.5rem, env(safe-area-inset-top))
    1.5rem
    max(2.5rem, env(safe-area-inset-bottom));
}

.page {
  position: relative;

  width: min(100%, 760px);
  margin: 0 auto;

  padding: 3.5rem 4rem 2rem;

  overflow: hidden;

  background:
    radial-gradient(
      circle at 12% 8%,
      rgba(91, 68, 30, 0.055),
      transparent 17%
    ),
    radial-gradient(
      circle at 84% 42%,
      rgba(104, 78, 41, 0.035),
      transparent 21%
    ),
    linear-gradient(
      91deg,
      transparent 49.5%,
      rgba(64, 54, 35, 0.018) 50%,
      transparent 50.5%
    ),
    var(--paper);

  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.32),
    0 20px 60px rgba(0, 0, 0, 0.26);
}

.page::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;

  background:
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 31px,
      rgba(70, 64, 47, 0.025) 32px
    );

  mix-blend-mode: multiply;
}

.page::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 2.7rem;

  width: 1px;

  background: rgba(150, 73, 60, 0.16);

  pointer-events: none;
}

.field-header {
  position: relative;
  z-index: 1;

  display: grid;
  grid-template-columns: 110px 1fr auto;
  align-items: start;
  gap: 1.4rem;
}

.stamp {
  border: 2px solid rgba(43, 42, 35, 0.58);

  padding: 0.55rem 0.65rem;

  font-family:
    "Courier New",
    monospace;

  font-size: 0.72rem;
  line-height: 1.35;
  letter-spacing: 0.08em;

  transform: rotate(-1deg);
}

.identity {
  padding-top: 0.1rem;
}

.small-label {
  margin: 0 0 0.25rem;

  font-family:
    "Courier New",
    monospace;

  font-size: 0.62rem;
  letter-spacing: 0.16em;
}

.identity h1 {
  margin: 0;

  font-family:
    "Courier New",
    monospace;

  font-size: clamp(1.7rem, 4vw, 2.35rem);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.identity > p:last-child {
  margin: 0.3rem 0 0;

  color: var(--faded-ink);

  font-size: 0.83rem;
}

.year {
  padding-top: 0.15rem;

  font-family:
    "Courier New",
    monospace;

  font-size: 1rem;
  letter-spacing: 0.12em;
}

.rule {
  position: relative;
  z-index: 1;

  height: 1px;

  margin: 1.8rem 0 1.2rem;

  background: rgba(43, 39, 28, 0.46);
}

.assignment {
  position: relative;
  z-index: 1;

  margin-bottom: 2.8rem;

  font-family:
    "Courier New",
    monospace;
}

.assignment dl {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem 2rem;

  margin: 0;
}

.assignment dl > div {
  display: grid;
  grid-template-columns: 78px 1fr;
}

.assignment dt {
  color: var(--faded-ink);

  font-size: 0.68rem;
  text-transform: uppercase;
}

.assignment dd {
  margin: 0;

  font-size: 0.78rem;
}

.entry {
  position: relative;
  z-index: 1;

  margin: 0 0 2.4rem;
}

.entry-date {
  display: flex;
  justify-content: space-between;

  margin-bottom: 0.8rem;
  padding-bottom: 0.35rem;

  border-bottom: 1px solid rgba(46, 43, 33, 0.34);

  font-family:
    "Courier New",
    monospace;

  font-size: 0.7rem;
  font-weight: bold;
  letter-spacing: 0.08em;
}

.entry p {
  max-width: 92%;

  margin: 0 0 0.85rem;

  font-size: 0.98rem;
  line-height: 1.65;
}

.pencil-note {
  position: absolute;

  color: var(--pencil);

  font-family:
    "Comic Sans MS",
    "Bradley Hand",
    cursive;

  font-size: 0.8rem;
  line-height: 1.25;

  opacity: 0.75;
}

.note-one {
  right: -0.4rem;
  bottom: -1rem;

  transform: rotate(-5deg);
}

.note-two {
  right: 0;
  bottom: -0.7rem;

  transform: rotate(3deg);
}

.measurements {
  position: relative;
  z-index: 1;

  margin: 2.7rem 0;
}

.measurements table {
  width: 100%;

  border-collapse: collapse;

  font-family:
    "Courier New",
    monospace;

  font-size: 0.72rem;
}

.measurements th,
.measurements td {
  border: 1px solid rgba(56, 52, 40, 0.35);

  padding: 0.5rem 0.6rem;

  text-align: left;
}

.measurements th {
  width: 17%;

  color: var(--faded-ink);

  font-size: 0.62rem;
  letter-spacing: 0.08em;
}

.sketch-block {
  position: relative;
  z-index: 1;

  margin: 3rem 0;

  transform: rotate(-0.25deg);
}

.sketch-title {
  margin-bottom: 0.5rem;

  font-family:
    "Courier New",
    monospace;

  font-size: 0.62rem;
  letter-spacing: 0.1em;
}

.sketch-block svg {
  display: block;

  width: 100%;
  height: auto;

  border-top: 1px solid rgba(42, 40, 31, 0.26);
  border-bottom: 1px solid rgba(42, 40, 31, 0.26);
}

.sketch-block svg path,
.sketch-block svg line {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contours path {
  stroke: rgba(69, 66, 57, 0.28);
  stroke-width: 1.1;
}

.creek {
  stroke: rgba(60, 61, 57, 0.62);
  stroke-width: 2;
}

.route {
  stroke: rgba(50, 47, 38, 0.78);
  stroke-width: 2.2;
  stroke-dasharray: 9 6;
}

.station {
  fill: rgba(42, 39, 30, 0.82);
}

.sketch-block text {
  fill: rgba(56, 52, 42, 0.76);

  font-family:
    "Comic Sans MS",
    "Bradley Hand",
    cursive;

  font-size: 15px;
}

.marker line {
  stroke: var(--red-pencil);
  stroke-width: 2;
}

.marker text {
  fill: var(--red-pencil);
}

.red-note {
  position: absolute;
  right: 3%;
  bottom: 4%;

  color: var(--red-pencil);

  font-family:
    "Comic Sans MS",
    "Bradley Hand",
    cursive;

  font-size: 0.9rem;

  transform: rotate(-7deg);
}

.second-entry {
  margin-top: 3rem;
}

.specimens {
  position: relative;
  z-index: 1;

  margin: 3rem 0;
}

.section-label {
  margin-bottom: 0.8rem;

  font-family:
    "Courier New",
    monospace;

  font-size: 0.65rem;
  letter-spacing: 0.12em;
}

.sample-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);

  border-top: 1px solid rgba(50, 47, 37, 0.35);
  border-left: 1px solid rgba(50, 47, 37, 0.35);
}

.sample-grid > div {
  padding: 0.7rem;

  border-right: 1px solid rgba(50, 47, 37, 0.35);
  border-bottom: 1px solid rgba(50, 47, 37, 0.35);

  font-size: 0.78rem;
}

.sample-grid span {
  display: block;

  margin-bottom: 0.2rem;

  font-family:
    "Courier New",
    monospace;

  font-size: 0.67rem;
  font-weight: bold;
}

.final-entry {
  margin-top: 3.2rem;
}

.short-entry {
  margin-top: 1.6rem !important;

  font-family:
    "Courier New",
    monospace;

  font-size: 0.92rem !important;
}

.closing-mark {
  position: relative;
  z-index: 1;

  display: flex;
  justify-content: space-between;

  margin-top: 4rem;
  padding-top: 0.5rem;

  border-top: 1px solid rgba(45, 42, 32, 0.32);

  color: rgba(52, 48, 38, 0.68);

  font-family:
    "Courier New",
    monospace;

  font-size: 0.68rem;
}

footer {
  position: relative;
  z-index: 1;

  margin-top: 3rem;

  text-align: center;
}

[data-contact] {
  appearance: none;

  border: 0;
  border-bottom: 1px solid rgba(44, 41, 32, 0.35);

  padding: 0 0 0.12rem;

  background: transparent;
  color: rgba(44, 41, 32, 0.56);

  font-family:
    "Courier New",
    monospace;

  font-size: 0.68rem;
  letter-spacing: 0.06em;

  cursor: pointer;
}

[data-contact]:hover,
[data-contact]:focus-visible {
  color: var(--ink);
}

.archive-links {
  position: relative;
  z-index: 1;

  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.45rem;

  margin-top: 3.2rem;

  color: rgba(52, 48, 38, 0.42);

  font-family:
    "Courier New",
    monospace;

  font-size: 0.62rem;
  letter-spacing: 0.04em;
}

.archive-links a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18rem;
}

.archive-links a:hover,
.archive-links a:focus-visible {
  color: rgba(42, 39, 30, 0.82);
}

@media (max-width: 640px) {
  body {
    background: var(--paper);
  }

  .book {
    padding:
      env(safe-area-inset-top)
      0
      env(safe-area-inset-bottom);
  }

  .page {
    width: 100%;
    min-height: 100dvh;

    margin: 0;

    padding:
      2.2rem
      1.35rem
      1.8rem;

    box-shadow: none;
  }

  .page::after {
    left: 0.72rem;
  }

  .field-header {
    grid-template-columns: 82px 1fr;
    gap: 1rem;
  }

  .year {
    grid-column: 2;
    grid-row: 2;

    padding: 0;
    margin-top: -0.45rem;
  }

  .stamp {
    font-size: 0.61rem;
  }

  .assignment dl {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .entry p {
    max-width: 100%;
  }

  .pencil-note {
    position: static;
    display: block;

    width: fit-content;

    margin: 0.8rem 0 0 auto;
  }

  .measurements {
    overflow-x: auto;
  }

  .measurements table {
    min-width: 470px;
  }

  .sketch-block {
    margin-left: -0.5rem;
    margin-right: -0.5rem;
  }
}