/* Binaria — chrome compartit (navbar + footer) i utilitats globals (assets/site.css).
   El navbar i el footer els injecta assets/site.js als placeholders
   #site-nav / #site-footer de cada pàgina. */

/* ---------- Utilitats globals ---------- */

.b-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* Offset d'àncores sota el navbar sticky */
[id] { scroll-margin-top: 92px; }

/* Botons — pill, hover = elevació, press = tornar a lloc */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: var(--weight-semibold);
  font-size: 15px;
  line-height: 1.2;
  padding: 12px 26px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition:
    transform var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}
.btn:hover { text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow-soft); }
.btn:active { transform: translateY(0); box-shadow: none; }

.btn--primary { background: var(--ink); color: var(--text-inverse); border-color: var(--ink); }
.btn--primary:hover { background: var(--forest-deep); border-color: var(--forest-deep); color: var(--text-inverse); }

.btn--secondary { background: transparent; color: var(--ink); border-color: var(--border-strong); }
.btn--secondary:hover { color: var(--forest); border-color: var(--forest); }

/* Per a seccions fosques (--surface-inverse) */
.btn--inverse { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn--inverse:hover { background: var(--stone-1); border-color: var(--stone-1); color: var(--ink); }

.btn--sm { padding: 8px 18px; font-size: 14px; }
.btn--lg { padding: 15px 32px; font-size: 16px; }

/* La icona dins d'un botó: cobrir i I svg (lucide reemplaça <i> per <svg>) */
.btn i, .btn svg { width: 18px; height: 18px; flex: none; }

/* ---------- Navbar ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(250, 248, 244, 0.85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: box-shadow var(--duration-base) var(--ease-out);
}
.nav.nav--scrolled { box-shadow: var(--shadow-soft); }

.nav__in {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 68px;
}

.nav__brand {
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: var(--tracking-display);
  color: var(--ink);
  line-height: 1;
  text-decoration: none;
}
.nav__brand:hover { color: var(--ink); text-decoration: none; }

.nav__links { display: flex; gap: 4px; }
.nav__links a {
  font-size: 15px;
  font-weight: var(--weight-medium);
  color: var(--ink-2);
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: background var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
}
.nav__links a:hover { color: var(--forest); background: var(--forest-tint); text-decoration: none; }

.nav__side { margin-left: auto; display: flex; align-items: center; gap: 18px; }

/* Selector d'idioma discret */
.nav__langs, .ft__langs { display: flex; align-items: center; gap: 2px; }
.nav__langs a, .nav__langs span,
.ft__langs a, .ft__langs span {
  font-size: 12px;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.06em;
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  text-decoration: none;
}
.nav__langs a { color: var(--ink-3); }
.nav__langs a:hover { color: var(--forest); background: var(--forest-tint); text-decoration: none; }
.nav__langs .is-current { color: var(--ink); }
.nav__langs .lang-sep { color: var(--stone-3); padding: 0; }

/* Hamburguesa (només mòbil) */
.nav__burger {
  display: none;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--ink);
}
.nav__burger svg { width: 20px; height: 20px; display: block; }
.nav__burger .ico-close { display: none; }
.nav__burger[aria-expanded="true"] .ico-open { display: none; }
.nav__burger[aria-expanded="true"] .ico-close { display: block; }

/* Panell desplegable mòbil */
.nav__menu {
  border-top: 1px solid var(--border-subtle);
  background: var(--paper);
  padding: 12px var(--gutter) 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav__menu[hidden] { display: none; }
.nav__menu a:not(.btn) {
  font-size: 17px;
  font-weight: var(--weight-medium);
  color: var(--ink-2);
  padding: 12px 10px;
  border-radius: var(--radius-sm);
  text-decoration: none;
}
.nav__menu a:not(.btn):hover { color: var(--forest); background: var(--forest-tint); text-decoration: none; }
.nav__menu .btn { margin-top: 12px; align-self: flex-start; }
.nav__menu .nav__langs { margin-top: 16px; }

@media (max-width: 860px) {
  .nav__links, .nav__side .nav__langs, .nav__side .nav__cta { display: none; }
  .nav__burger { display: inline-flex; }
  .nav__in { gap: 16px; }
}

/* ---------- Footer ---------- */

.ft {
  background: var(--surface-inverse);
  color: var(--paper);
  padding: 64px 0 40px;
  position: relative;
  overflow: hidden;
}

.ft__in {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  align-items: flex-start;
}

.ft__brand { display: flex; flex-direction: column; gap: 14px; min-width: 220px; }
.ft__wordmark {
  font-family: var(--font-display);
  font-size: 30px;
  letter-spacing: var(--tracking-display);
  color: var(--paper);
  line-height: 1;
}
.ft__tag { margin: 0; font-size: 14px; color: rgba(250, 248, 244, 0.6); max-width: 260px; }

.ft__cols { display: flex; gap: 64px; margin-left: auto; flex-wrap: wrap; }
.ft__col { display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.ft__col a { color: rgba(250, 248, 244, 0.75); text-decoration: none; }
.ft__col a:hover { color: var(--paper); text-decoration: underline; }
.ft__col span { color: rgba(250, 248, 244, 0.6); }

.ft__base {
  position: relative;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid rgba(250, 248, 244, 0.14);
  font-size: 13px;
  color: rgba(250, 248, 244, 0.45);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.ft__langs a { color: rgba(250, 248, 244, 0.55); }
.ft__langs a:hover { color: var(--paper); background: rgba(250, 248, 244, 0.12); text-decoration: none; }
.ft__langs .is-current { color: var(--paper); }
.ft__langs .lang-sep { color: rgba(250, 248, 244, 0.3); padding: 0; }

@media (max-width: 640px) {
  .ft__cols { margin-left: 0; gap: 32px; }
}