/* =========================
   Base layout & typography
   ========================= */

body {
  max-width: 72ch;
  margin: 3rem auto;
  padding: 0 1.5rem;

  font-family: "Georgia", serif;
  line-height: 1.6;
  color: #111;
}

p {
  margin: 1rem 0;
}

/* =========================
   Headings
   ========================= */

h1 {
  font-size: 2.2rem;
  margin: 4rem 0 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #ddd;
}

h2 {
  font-size: 1.6rem;
  margin-top: 3rem;
}

h3 {
  font-size: 1.25rem;
  margin-top: 2rem;
  font-weight: 600;
}

h4 {
  font-size: 1.1rem;
  margin-top: 1.5rem;
  font-weight: 600;
}

h5 {
  font-size: 1rem;
  margin-top: 1.2rem;
  font-weight: 600;
}


h1.title {
  font-size: 3rem;
  margin-top: 0;
  border: none;
}

/* =========================
   Tables
   ========================= */

table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
}

th,
td {
  padding: 0.5rem;
  text-align: left;
}

th {
  border-bottom: 2px solid #444;
}

td {
  border-bottom: 1px solid #ddd;
}

/* =========================
   Images
   ========================= */

img {
  display: block;
  margin: 1.5rem auto;
  height: auto;
}

.img-sm { max-width: 25%; }
.img-md { max-width: 50%; }
.img-ml { max-width: 75%; }
.img-lg { max-width: 100%; }

/* =========================
   Abstract / callout blocks
   ========================= */

.abstract {
  margin: 2rem 0;
  padding: 1.5rem;
  background: #f7f7f7;
  border-left: 4px solid #999;
}

.abstract-title {
  margin-bottom: 0.5rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* =========================
   Code blocks
   ========================= */

pre {
  padding: 1rem;
  border: 1px solid #ddd;
  border-radius: 6px;
  background: #f5f5f5;
}

pre > code.sourceCode {
  white-space: pre-wrap;      /* preserves whitespace but allows wrapping */
  word-wrap: break-word;      /* legacy */
  overflow-wrap: anywhere;    /* modern */
}