/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,300;0,400;0,700;0,900;1,300;1,400;1,700;1,900&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,700;0,8..60,900;1,8..60,400;1,8..60,700&display=swap');

/* Tokens */
:root {
  --color-bg: #fff;
  --color-text: #1a1a1a;
  --color-muted: #444;
  --color-border: #e0e0e0;
  --color-accent: #c47d2b;
  --color-accent-hover: #d4892a;
  /* #8a521a is ~7:1 contrast on white (WCAG AA) */
  --color-link: #8a521a;
  --color-link-hover: #6b3f13;
  --color-header-bg: #111;
  --color-header-text: #fff;

  --font-body: 'Lato', sans-serif;
  --font-heading: 'Source Serif 4', serif;
  --font-mono: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, monospace;

  --max-width-text: 65ch;
  --max-width-site: 72rem;

  --spacing-xs: 0.4rem;
  --spacing-sm: 1.2rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;

  --border-radius: 3px;
}

/* Reset */
html {
  font-size: 62.5%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-size: 1.8rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  font-family: var(--font-body);
  margin: 0;
  padding: 0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.25;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.6rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.7rem; }

p { margin: 0 0 var(--spacing-sm); }

a {
  color: var(--color-link);
  text-decoration: none;
}

a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

code, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

:not(pre) > code {
  background: #f5f0e8;
  padding: 0.1em 0.35em;
  border-radius: var(--border-radius);
  font-size: 0.88em;
}

pre {
  background: #1a1a1a;
  color: #e8e0d4;
  padding: 1.2rem 1.6rem;
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin: 2rem 0;
  line-height: 1.55;
}

pre code {
  background: transparent;
  padding: 0;
}

article p, article li {
  max-width: var(--max-width-text);
}

/* Layout */
main,
footer {
  max-width: var(--max-width-site);
  margin: 0 auto;
}

header.navbar {
  background: var(--color-header-bg);
  overflow: hidden;
  padding: var(--spacing-sm) 0;
}

header.navbar .header-inner {
  max-width: var(--max-width-site);
  margin: 0 auto;
  padding: 0;
}

nav {
  text-align: right;
}

nav a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-header-text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.85;
}

nav a:hover {
  opacity: 1;
  color: var(--color-header-text);
  text-decoration: none;
}

footer {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-sm) 0;
  border-top: 1px solid var(--color-border);
  font-size: 1.4rem;
  color: var(--color-muted);
}

.logo a {
  font-weight: 700;
  color: var(--color-header-text);
  text-decoration: none;
}

.logo a:hover {
  color: var(--color-accent-hover);
  text-decoration: none;
}

/* Responsive */
@media (max-width: 639px) {
  main, footer, header.navbar .header-inner {
    width: 90%;
    padding: 0 5%;
  }

  header.navbar {
    padding: var(--spacing-md) 0;
  }

  .logo {
    text-align: center;
    margin: 0 auto var(--spacing-xs);
  }

  .logo a { font-size: 2rem; }

  nav {
    text-align: center;
    margin: 0 auto;
  }

  nav a {
    display: inline;
    margin: 0 0.5rem;
  }

  footer { text-align: center; }

  .article-meta p, .post-meta p {
    font-size: 1.4rem;
  }
}

@media (min-width: 640px) {
  main, footer, header.navbar .header-inner {
    max-width: var(--max-width-site);
    margin: 0 auto;
    padding: 0;
  }

  .logo {
    text-align: left;
    margin: 0;
  }

  .logo a {
    float: left;
    font-size: 1.8rem;
  }

  nav {
    text-align: right;
  }

  nav a {
    margin-left: var(--spacing-sm);
    display: inline;
  }

  footer { text-align: right; }
}

@media (min-width: 952px) {
  .logo a { font-size: 2rem; }
}

/* Article content */
.article-content {
  line-height: 1.7;
}

.article-content h1 { font-size: 2.8rem; font-weight: 700; margin-top: 2.5rem; }
.article-content h2 { font-size: 2.1rem; font-weight: 700; margin-top: 2.2rem; }
.article-content h3 { font-size: 1.8rem; font-weight: 700; margin-top: 1.8rem; }

.article-content blockquote {
  margin: 2rem 0;
  padding: 0.6rem 1.6rem;
  border-left: 3px solid var(--color-accent);
  font-style: italic;
  color: var(--color-muted);
}

.article-content hr {
  margin: 3rem 0;
  border: none;
  border-top: 1px solid var(--color-border);
}

.article-content sup {
  font-size: 0.75em;
}

/* Homepage intro */
.home-intro {
  margin-top: 1rem;
  margin-bottom: 3.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.home-intro p {
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--color-muted);
  max-width: var(--max-width-text);
}

.home-intro p:last-child {
  margin-bottom: 0;
}

.home-services {
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--color-text);
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

/* Blog post list */
.blog-posts {
  padding: 0;
}

.blog-posts li {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.blog-posts h2 {
  margin-top: 0;
  margin-bottom: 0.2rem;
  font-weight: 700;
}

.blog-posts h2 a {
  color: var(--color-text);
}

.blog-posts h2 a:hover {
  color: var(--color-accent);
}

.excerpt {
  padding: 0.5rem 0;
  font-style: italic;
  color: var(--color-muted);
  font-size: 1.5rem;
}

.blog-posts .draft {
  opacity: 0.7;
}

.blog-posts .draft h2::after {
  content: " (brouillon)";
  font-size: 1.3rem;
  color: var(--color-muted);
  font-style: italic;
}

/* Tags */
.tags {
  padding: 0.5rem 0;
}

.tags a::before {
  content: "#";
}

/* Article metadata */
.article-meta p,
.post-meta p {
  margin: 0.3rem 0;
  font-size: 1.4rem;
  color: #444;
}

.article-meta .meta-label,
.post-meta .meta-label {
  font-weight: 600;
  color: #333;
  margin-right: 0.4rem;
}

.last-verified {
  font-style: italic;
  font-size: 1.3rem;
  color: var(--color-muted);
  margin-top: 0.2rem;
}

.draft-badge {
  display: inline-block;
  background: #f0f0f0;
  color: var(--color-muted);
  font-size: 1.2rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 1rem;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
}

/* Callouts */
.callout {
  margin: 2rem 0;
  padding: 1.2rem 1.6rem;
  border-left: 4px solid;
  border-radius: var(--border-radius);
  font-size: 1.5rem;
  max-width: var(--max-width-text);
}

.callout-note {
  background: #edf2f8;
  border-color: var(--color-accent);
  color: #1a2d42;
}

.callout-warning {
  background: #fef6ed;
  border-color: #d4892a;
  color: #4a2e0a;
}

.callout-tip {
  background: #edf7f0;
  border-color: #2d8a4e;
  color: #1a3d1f;
}

/* Syntax highlighting */
pre[class*="language-"] {
  font-size: 1.4rem;
  border-radius: var(--border-radius);
  margin: 2rem 0;
  padding: 1.2rem 1.6rem;
  overflow-x: auto;
}

:not(pre) > code[class*="language-"] {
  font-size: 1.4rem;
  color: var(--color-accent);
}

/* Images */
figure {
  margin: 2rem 0;
  text-align: center;
}

figure img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
}

figcaption {
  margin-top: 0.6rem;
  font-size: 1.3rem;
  color: var(--color-muted);
  font-style: italic;
}

/* Footer */
.feed-link {
  display: inline-block;
  margin-left: 0.6rem;
  font-size: 1.4rem;
}

/* Footnotes */
.footnote-ref {
  font-size: 0.8em;
}

.footnote-item p {
  font-size: 1.3rem;
  color: var(--color-muted);
}

.calrs-embed {
  margin-left: calc(-1 * var(--spacing-sm));
  margin-right: calc(-1 * var(--spacing-sm));
}

.calrs-spinner {
  width: 2rem;
  height: 2rem;
  margin: 4rem auto;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: calrs-spin 0.6s linear infinite;
}

@keyframes calrs-spin {
  to { transform: rotate(360deg); }
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-header-bg);
  color: var(--color-header-text);
  padding: 0.8rem 1.2rem;
  z-index: 1000;
  font-size: 1.4rem;
}

.skip-link:focus {
  left: 0;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #15151a;
    --color-text: #e8e8ea;
    --color-muted: #a8a8ad;
    --color-border: #2a2a30;
    --color-accent: #d4892a;
    --color-accent-hover: #e09a3a;
    --color-link: #d4a05a;
    --color-link-hover: #e0b06a;
    --color-header-bg: #0a0a0d;
  }

  .callout-note {
    background: #1a2230;
    color: #c8d4e0;
    border-color: var(--color-accent);
  }

  .callout-warning {
    background: #2a1f10;
    color: #e0c8a8;
    border-color: #d4892a;
  }

  .callout-tip {
    background: #1a2a1f;
    color: #b8d8b8;
    border-color: #2d8a4e;
  }

  .draft-badge {
    background: #2a2a30;
    color: var(--color-muted);
  }

  :not(pre) > code {
    background: #2a2a30;
    color: #d4a05a;
  }

  pre {
    background: #0d0d10;
    color: #e8e0d4;
  }
}

/* Print */
@media print {
  header.navbar, footer, .skip-link, .feed-link, .draft-badge {
    display: none;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
    color: #000;
    background: #fff;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #555;
  }

  a[href^="#"]::after,
  a[href^="mailto:"]::after {
    content: "";
  }

  pre {
    background: #f5f5f5;
    color: #000;
    border: 1px solid #ccc;
    white-space: pre-wrap;
  }

  .article-content {
    max-width: 100%;
  }

  article p, article li {
    max-width: 100%;
  }
}