:root {
  --bg: #fff8e6;
  --paper: #fffdf7;
  --text: #1d2633;
  --muted: #5d6673;
  --blue: #003f7d;
  --teal: #006d77;
  --gold: #c28a21;
  --border: #dfd2b5;
  --link: #005f99;
  --code-bg: #f1eadb;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.65;
}

/* Header */

.site-header {
  width: 100%;
  background: #f6e7c5;
  border-bottom: 4px solid var(--gold);
  overflow: hidden;
}

.site-header-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: none;
  object-fit: contain;
  object-position: center;
}

/* Main document width */

body > nav#TOC,
body > main,
body > h1,
body > h2,
body > h3,
body > h4,
body > p,
body > ul,
body > ol,
body > blockquote,
body > hr,
body > pre {
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}

/* Horizontal padding for generated Pandoc content */

body > h1,
body > h2,
body > h3,
body > h4,
body > p,
body > ul,
body > ol,
body > blockquote,
body > hr,
body > pre {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Typography */

h1,
h2,
h3,
h4 {
  line-height: 1.2;
  color: var(--blue);
}

h1 {
  margin-top: 2.5rem;
  margin-bottom: 1.2rem;
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: -0.03em;
}

h2 {
  margin-top: 2.4rem;
  margin-bottom: 1rem;
  padding-top: 1rem;
  border-top: 2px solid var(--border);
  font-size: clamp(1.6rem, 3vw, 2.3rem);
}

h3 {
  margin-top: 2rem;
  margin-bottom: 0.8rem;
  color: var(--teal);
  font-size: 1.45rem;
}

h4 {
  margin-top: 1.4rem;
  margin-bottom: 0.5rem;
  color: var(--text);
  font-size: 1.15rem;
}

p {
  margin-top: 0.8rem;
  margin-bottom: 0.8rem;
}

strong {
  color: #111827;
}

/* Links */

a {
  color: var(--link);
  font-weight: 650;
}

a:hover {
  text-decoration-thickness: 0.15em;
}

/* Lists */

ul,
ol {
  margin-top: 0.7rem;
  margin-bottom: 0.9rem;
}

li {
  margin-bottom: 0.35rem;
}

/* Horizontal rules */

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin-top: 2.5rem;
  margin-bottom: 2.5rem;
}

/* Blockquotes */

blockquote {
  border-left: 5px solid var(--gold);
  background: rgba(255, 255, 255, 0.55);
  padding: 0.8rem 1rem;
  color: var(--muted);
}

/* Code */

code {
  background: var(--code-bg);
  padding: 0.12rem 0.32rem;
  border-radius: 0.25rem;
  font-size: 0.95em;
}

pre {
  overflow-x: auto;
  background: var(--code-bg);
  padding-top: 1rem;
  padding-bottom: 1rem;
  border-radius: 0.6rem;
}

pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
}

/* Table of contents generated by Pandoc */

nav#TOC {
  margin-top: 2rem;
  margin-bottom: 2rem;
  padding: 1.2rem 1.5rem;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--border);
  border-radius: 0.8rem;
}

nav#TOC::before {
  content: "Navegação";
  display: block;
  margin-bottom: 0.6rem;
  font-weight: 800;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

nav#TOC ul {
  margin-top: 0.2rem;
  margin-bottom: 0;
  padding-left: 1.2rem;
}

nav#TOC li {
  margin-bottom: 0.25rem;
}

/* Tables, caso alguma tabela seja usada futuramente */

table {
  width: calc(100% - 3rem);
  max-width: 1100px;
  margin: 1.5rem auto;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.5);
}

th,
td {
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  background: rgba(194, 138, 33, 0.12);
  color: var(--blue);
  font-weight: 800;
}

/* Images inside Markdown content */

p img,
figure img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.5rem auto;
  border-radius: 0.5rem;
}

/* Responsive layout */

@media (max-width: 760px) {
  html {
    font-size: 16px;
  }

  .site-header-image {
    width: 100%;
    height: auto;
    max-height: none;
    object-fit: contain;
    object-position: center;
  }

  body > h1,
  body > h2,
  body > h3,
  body > h4,
  body > p,
  body > ul,
  body > ol,
  body > blockquote,
  body > hr,
  body > pre,
  nav#TOC {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  table {
    width: calc(100% - 2rem);
    font-size: 0.95rem;
  }

  th,
  td {
    padding: 0.5rem 0.6rem;
  }
}