/* ===========================================
   Hors Bitume - Blog gravel & ultra endurance
   =========================================== */
:root {
  --c-primary: #1a3a3a;          /* teal profond */
  --c-primary-dark: #0d2424;
  --c-accent: #b85a1f;            /* ocre brûlé */
  --c-accent-dark: #8a4115;
  --c-bg: #faf8f3;                /* parchemin */
  --c-bg-alt: #f0ebe0;
  --c-text: #1a1a1a;
  --c-text-soft: #4a4a4a;
  --c-text-mute: #777;
  --c-border: #d8d2c0;
  --c-tag-train: #2d6a8f;
  --c-tag-nutri: #4a7c2e;
  --c-tag-mat: #b85a1f;
  --c-tag-recit: #8b3a62;
  --max-w: 1180px;
  --max-w-article: 720px;
  --shadow: 0 2px 14px rgba(0,0,0,0.06);
  --radius: 6px;
  --serif: Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  --sans: -apple-system, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-accent-dark); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--c-accent); }

/* TYPO */
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 700;
  line-height: 1.25;
  color: var(--c-primary);
  margin: 1.8em 0 0.5em;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin-top: 0.3em; }
h2 { font-size: clamp(1.45rem, 3vw, 1.85rem); padding-bottom: 0.25em; border-bottom: 2px solid var(--c-border); }
h3 { font-size: 1.2rem; color: var(--c-accent-dark); }
p { margin: 0 0 1.1em; }
blockquote {
  border-left: 4px solid var(--c-accent);
  padding: 0.5rem 0 0.5rem 1.2rem;
  margin: 1.6em 0;
  font-style: italic;
  color: var(--c-text-soft);
}

/* HEADER */
.site-header {
  background: var(--c-primary);
  color: var(--c-bg);
  position: sticky; top: 0; z-index: 100;
  box-shadow: var(--shadow);
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--c-bg);
  text-decoration: none;
  letter-spacing: 0.5px;
}
.brand em { color: var(--c-accent); font-style: normal; }
.tagline { font-size: 0.8rem; color: var(--c-bg-alt); margin-left: 0.7rem; opacity: 0.7; font-style: italic; }
.nav-list {
  list-style: none; margin: 0; padding: 0;
  display: flex; gap: 1.5rem; flex-wrap: wrap;
}
.nav-list a {
  color: var(--c-bg);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
}
.nav-list a:hover, .nav-list a[aria-current="page"] {
  border-bottom-color: var(--c-accent);
  color: var(--c-accent);
}

/* HERO HOMEPAGE */
.hero {
  background: linear-gradient(135deg, var(--c-bg-alt) 0%, var(--c-bg) 100%);
  padding: 4rem 1.2rem 3rem;
  border-bottom: 1px solid var(--c-border);
  text-align: center;
}
.hero h1 { color: var(--c-primary); margin: 0 0 0.5em; }
.hero .subtitle {
  font-size: 1.15rem;
  color: var(--c-text-soft);
  max-width: 640px;
  margin: 0 auto;
  font-style: italic;
}

/* MAIN */
main { max-width: var(--max-w); margin: 0 auto; padding: 2.5rem 1.2rem 3rem; }
article.post { max-width: var(--max-w-article); margin: 0 auto; }

/* CARDS GRID */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 1.4rem;
  margin: 1.5rem 0;
}
.post-card {
  background: white;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.4rem 1.4rem 1.6rem;
  text-decoration: none;
  color: var(--c-text);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: var(--shadow);
}
.post-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 18px rgba(0,0,0,0.1);
  color: var(--c-text);
}
.post-card h3 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--c-primary);
  border: none;
  padding: 0;
}
.post-card .excerpt { font-size: 0.95rem; color: var(--c-text-soft); flex: 1; }
.post-card .post-meta { font-size: 0.8rem; color: var(--c-text-mute); display: flex; gap: 0.5rem; align-items: center; }

/* TAGS */
.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  color: white;
}
.tag.train { background: var(--c-tag-train); }
.tag.nutri { background: var(--c-tag-nutri); }
.tag.mat   { background: var(--c-tag-mat); }
.tag.recit { background: var(--c-tag-recit); }

/* ARTICLE META */
.article-meta {
  font-size: 0.9rem;
  color: var(--c-text-mute);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}
.article-meta .tag { font-size: 0.7rem; padding: 0.18rem 0.55rem; }
.lead {
  font-size: 1.18rem;
  color: var(--c-text-soft);
  font-style: italic;
  border-left: 3px solid var(--c-accent);
  padding-left: 1rem;
  margin: 0 0 2rem;
}

/* CALL TO ACTION */
.cta-block {
  background: var(--c-primary);
  color: var(--c-bg);
  padding: 2.2rem 1.5rem;
  border-radius: var(--radius);
  text-align: center;
  margin: 2.5rem 0;
}
.cta-block h2 { color: var(--c-bg); margin-top: 0; border: none; padding: 0; }
.cta-block p { color: var(--c-bg-alt); max-width: 600px; margin: 0 auto 1.2em; }
.cta-button {
  display: inline-block;
  background: var(--c-accent);
  color: white;
  padding: 0.85rem 1.7rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.3px;
  transition: background 0.15s;
}
.cta-button:hover { background: var(--c-accent-dark); color: white; }

/* INFOBOX */
.infobox {
  background: var(--c-bg-alt);
  border-left: 4px solid var(--c-accent);
  padding: 1rem 1.2rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 1.5rem 0;
  font-size: 0.97rem;
}
.infobox strong { color: var(--c-accent-dark); }

/* TABLE */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: white;
  font-size: 0.95rem;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
th, td {
  padding: 0.7rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--c-border);
}
th { background: var(--c-primary); color: var(--c-bg); font-weight: 700; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--c-bg-alt); }

/* CATEGORIES SECTION */
.cat-section {
  margin: 3rem 0 2rem;
}
.cat-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1rem;
}
.cat-header h2 {
  margin: 0;
  border: none;
  padding: 0;
  font-size: 1.5rem;
}

/* BREADCRUMB */
.breadcrumb {
  font-size: 0.9rem;
  color: var(--c-text-mute);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--c-text-mute); }

/* RELATED */
.related {
  border-top: 1px solid var(--c-border);
  padding-top: 1.5rem;
  margin-top: 2.5rem;
}
.related h3 { color: var(--c-primary); }
.related ul { list-style: none; padding: 0; }
.related li { margin: 0.5rem 0; }
.related a { color: var(--c-primary); }

/* FOOTER */
.site-footer {
  background: var(--c-primary-dark);
  color: var(--c-bg-alt);
  padding: 2.5rem 1.2rem 1.5rem;
  margin-top: 4rem;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}
.footer-inner h4 { color: var(--c-bg); margin-top: 0; font-size: 1rem; font-family: var(--serif); }
.footer-inner ul { list-style: none; padding: 0; margin: 0; }
.footer-inner li { margin-bottom: 0.4rem; }
.footer-inner a { color: var(--c-bg-alt); text-decoration: none; font-size: 0.93rem; }
.footer-inner a:hover { color: var(--c-accent); }
.footer-bottom {
  max-width: var(--max-w);
  margin: 1.8rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.83rem;
  color: var(--c-bg-alt);
  text-align: center;
}

/* RESPONSIVE */
@media (max-width: 600px) {
  body { font-size: 16px; }
  .hero { padding: 3rem 1rem 2rem; }
  main { padding: 1.5rem 1rem 2rem; }
  .nav-list { gap: 1rem; font-size: 0.9rem; }
  .tagline { display: none; }
  .cta-block { padding: 1.8rem 1rem; }
  table { font-size: 0.88rem; }
  th, td { padding: 0.5rem 0.5rem; }
}