/* site.css — base condivisa da tutte le pagine di holtibitri.com
   (home EN/IT e pagine articolo). Regole di pagina: nel <style> della pagina. */

/* ============================================
   RESET & VARIABLES
============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #F9F7F3;
  --bg-card: #FFFFFF;
  --text:    #111110;
  --accent:  #0038FF;
  --muted:   #7A7A73;
  --border:  #E5E3DE;
  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
  --max-w: 1100px;
  --pad: clamp(1.5rem, 5vw, 4rem);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.1;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ============================================
   NAV
============================================ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.25rem var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(249, 247, 243, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
nav.scrolled { border-color: var(--border); }

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  color: var(--text);
}

.nav-right { display: flex; align-items: center; gap: 2rem; }

.nav-links { display: flex; gap: 1.75rem; list-style: none; }
.nav-links a {
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--muted);
  letter-spacing: 0.03em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

.lang-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}
.lang-btn {
  padding: 0.3rem 0.65rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  text-decoration: none;
  transition: all 0.15s;
  letter-spacing: 0.05em;
}
.lang-btn.active { background: var(--text); color: var(--bg); }

/* ============================================
   FOOTER
============================================ */
footer {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--muted);
  padding: 2rem 0;
}

/* ============================================
   RESPONSIVE (nav)
============================================ */
@media (max-width: 768px) {
  .nav-links { display: none; }
}