/* ==========================================
   ARGUS PROTOCOL — Feuille de style principale
   Design sobre, lisible, responsive
   ========================================== */

/* --- Variables --- */
:root {
  --color-bg: #fafaf8;
  --color-text: #2c2c2c;
  --color-text-light: #555;
  --color-accent: #4a6b5f;
  --color-accent-hover: #3a564c;
  --color-border: #e0e0dc;
  --color-bg-header: #1e2d28;
  --color-text-header: #f0f0ec;
  --color-bg-notice: #f4f6f5;
  --font-heading: 'Georgia', 'Times New Roman', serif;
  --font-body: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --max-width: 800px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 17px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* --- Bandeau (Header) --- */
.site-header {
  background: var(--color-bg-header);
  color: var(--color-text-header);
  padding: 1rem 0 0.75rem;
  text-align: center;
  border-bottom: 4px solid var(--color-accent);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.banner-frame {
  max-width: var(--max-width);
  margin: 0 auto 1rem;
  padding: 0 1.5rem;
}

.banner-frame picture {
  display: block;
}

.site-banner {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.site-header h1 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: normal;
  letter-spacing: 0.03em;
  margin: 0;
}

/* --- Navigation des langues --- */
.lang-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.6rem;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.lang-nav a {
  color: var(--color-accent);
  text-decoration: none;
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  transition: background 0.2s;
}

.lang-nav a:hover,
.lang-nav a.active {
  background: var(--color-accent);
  color: #fff;
}

.site-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.8rem 0 0.15rem;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--color-text-header);
  text-decoration: none;
  padding: 0.35rem 0.8rem;
  border: 1px solid rgba(240, 240, 236, 0.28);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.site-nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(240, 240, 236, 0.5);
}

body[data-page="home"] .site-nav a[data-nav="home"],
body[data-page="index"] .site-nav a[data-nav="home"],
body[data-page="protocol"] .site-nav a[data-nav="protocol"],
body[data-page="protocole"] .site-nav a[data-nav="protocol"],
body[data-page="notice"] .site-nav a[data-nav="notice"],
body[data-page="versions"] .site-nav a[data-nav="versions"],
body[data-page="faq"] .site-nav a[data-nav="faq"],
body[data-page="license"] .site-nav a[data-nav="license"],
body[data-page="licence"] .site-nav a[data-nav="license"],
body[data-page="contact"] .site-nav a[data-nav="contact"] {
  color: #fff;
  background: var(--color-accent);
  border-color: var(--color-accent);
}

/* --- Contenu principal --- */
main {
  max-width: var(--max-width);
  margin: 2rem auto;
  padding: 0 1.5rem;
}

/* --- Titres --- */
h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  margin: 2.5rem 0 1rem;
  color: var(--color-accent);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0.4rem;
}

h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin: 2rem 0 0.8rem;
  color: var(--color-text);
}

h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin: 1.5rem 0 0.6rem;
  color: var(--color-text-light);
}

/* --- Paragraphes et listes --- */
p {
  margin-bottom: 1rem;
}

ul, ol {
  margin: 0.5rem 0 1rem 1.5rem;
}

li {
  margin-bottom: 0.3rem;
}

/* --- Liens --- */
a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--color-accent-hover);
}

/* --- Blocs spéciaux --- */
.note, .warning, .perimeter {
  background: var(--color-bg-notice);
  border-left: 4px solid var(--color-accent);
  padding: 1rem 1.2rem;
  margin: 1.5rem 0;
  border-radius: 0 4px 4px 0;
  font-size: 0.95rem;
}

/* --- Sommaire (Table of Contents) --- */
.toc, #TOC {
  background: var(--color-bg-notice);
  border: 1px solid var(--color-border);
  padding: 1.2rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 4px;
  font-size: 0.95rem;
}

.toc h3, #TOC h3 {
  margin-top: 0;
  font-size: 1.1rem;
}

.toc ul, #TOC ul {
  list-style: none;
  margin-left: 0;
}

.toc ul ul, #TOC ul ul {
  margin-left: 1.5rem;
}

.toc li, #TOC li {
  margin-bottom: 0.2rem;
}

/* --- Règles absolues (numérotées) --- */
.rules-list {
  counter-reset: rule-counter;
  list-style: none;
  margin-left: 0;
}

.rules-list li {
  counter-increment: rule-counter;
  margin-bottom: 0.8rem;
  padding-left: 2.5rem;
  position: relative;
}

.rules-list li::before {
  content: counter(rule-counter) ".";
  position: absolute;
  left: 0;
  font-weight: bold;
  color: var(--color-accent);
}

/* --- Pied de page --- */
.site-footer {
  max-width: var(--max-width);
  margin: 3rem auto 2rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-light);
  text-align: center;
}

.site-footer a {
  color: var(--color-text-light);
}

/* --- Responsive --- */
@media (max-width: 600px) {
  html {
    font-size: 16px;
  }
  .site-header h1 {
    font-size: 1.6rem;
  }
  main {
    padding: 0 1rem;
  }
  .site-header__inner {
    padding: 0 1rem;
  }
  .banner-frame {
    padding: 0 1rem;
  }
  h2 {
    font-size: 1.3rem;
  }
  h3 {
    font-size: 1.15rem;
  }
  .lang-nav {
    flex-wrap: wrap;
  }
  .site-nav {
    gap: 0.4rem;
    font-size: 0.9rem;
  }
  .site-nav a {
    padding: 0.3rem 0.7rem;
  }
}

/* --- Impression --- */
@media print {
  .site-header, .lang-nav, .site-nav, .site-footer {
    display: none;
  }
  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }
  main {
    max-width: 100%;
  }
  a {
    color: #000;
    text-decoration: none;
  }
}