/* ============================================================
   T.R.E. — CSS CONDIVISO PAGINE INTERNE
   Importa indice.css poi questo file per ogni pagina
   ============================================================ */

/* ── Header pagine interne (sempre frosted, non trasparente) ── */
.page-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--space-3) var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  background: color-mix(in srgb, var(--color-bg) 94%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid var(--color-border);
}

.page-header .site-logo { color: var(--color-text); }
.page-header .logo-text .brand-tre { color: var(--color-primary); text-shadow: none; font-size: var(--text-base); }
.page-header .logo-text .brand-full { color: var(--color-text-muted); font-size: 0.65rem; letter-spacing: 0.05em; }
.page-header .logo-img { width: 42px; height: 42px; filter: none; }
.page-header .nav-link { color: var(--color-text-muted); }
.page-header .nav-link:hover { color: var(--color-primary); background: rgba(88,144,27,0.08); }
.page-header .nav-link::after { display: none; }
.page-header .nav-link.active { color: var(--color-primary); font-weight: 600; }
.page-header .nav-cta { color: white; }
.page-header .theme-toggle { color: var(--color-text-muted); }
.page-header .theme-toggle:hover { background: var(--color-surface-2, #e8e2d6); color: var(--color-text); }

/* ── Page Hero (più basso dell'indice) ─── */
.page-hero {
  position: relative;
  min-height: 55vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding-bottom: var(--space-16);
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.page-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to bottom,
    rgba(10,8,4,0.25) 0%,
    rgba(10,8,4,0.55) 60%,
    rgba(10,8,4,0.80) 100%
  );
}

.page-hero-wave {
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  z-index: 2;
  line-height: 0;
}
.page-hero-wave svg { width: 100%; display: block; }

.page-hero-content {
  position: relative;
  z-index: 3;
  max-width: var(--content-wide);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-8) var(--space-8);
}

.page-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.page-hero-eyebrow::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-accent);
  opacity: 0.7;
}

.page-hero-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: white;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
  margin-bottom: var(--space-3);
  line-height: 1.1;
}

.page-hero-subtitle {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.8);
  max-width: 520px;
  line-height: 1.6;
  text-shadow: 0 1px 6px rgba(0,0,0,0.3);
}

/* ── Contenuto pagine interne ─── */
.page-main {
  background: var(--color-bg);
}

.page-section {
  padding: clamp(var(--space-16), 7vw, var(--space-24)) var(--space-8);
}

.page-section--alt {
  background: var(--color-surface);
}

.inner {
  max-width: var(--content-wide);
  margin: 0 auto;
}

.inner--narrow {
  max-width: var(--content-default);
  margin: 0 auto;
}

/* ── Breadcrumb ─── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { color: var(--color-text-muted); }

/* ── Sezione titolo interno ─── */
.section-header {
  margin-bottom: var(--space-12);
}
.section-header--center { text-align: center; }
.section-header--center .section-lead { margin-inline: auto; }

/* ── Card immagine + testo ─── */
.split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  margin-bottom: var(--space-16);
}
.split-block--reverse { direction: rtl; }
.split-block--reverse > * { direction: ltr; }

.split-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

@media (max-width: 768px) {
  .split-block { grid-template-columns: 1fr; }
  .split-block--reverse { direction: ltr; }
  .page-hero-title { font-size: var(--text-xl); }
  .page-header { padding-inline: var(--space-5); }
}