:root {
  --blu-scuro: #003366;
  --grigio: #555;
  --bg: #f5f7fb;
  --verde: #1f8a4b;
  --verde-chiaro: #28a967;
  --verde-premium1: #1b5e20;
  --verde-premium2: #2e7d32;
  --white: #ffffff;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: #000;
  line-height: 1.6;
}

/* CONTAINER CENTRALE */
.container-montagna {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* INTRODUZIONE */
.intro-montagna {
  max-width: 800px;
  margin: 40px auto;
  text-align: center;
  padding: 0 20px;
}

.intro-montagna h1 { color: var(--blu-scuro); font-size: 2.2rem; }

/* HERO VIDEO */
.hero-video {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  margin: 30px 0;
}

.hero-video video {
  width: 100%;
  height: 40vh;
  object-fit: cover;
  display: block;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.6), rgba(0,0,0,0.1));
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  text-align: center;
  color: var(--white);
}

/* TITOLI E TESTI */
.section-title { font-size: 1.8rem; color: var(--blu-scuro); text-align: center; margin-top: 40px; }
.section-subtitle { color: var(--grigio); text-align: center; margin-bottom: 25px; }

/* GRIGLIE E CARDS */
.grid-attivita {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.vetrina-card {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease;
}

.vetrina-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.vetrina-card h3 { margin: 15px 15px 5px; color: var(--blu-scuro); }
.vetrina-card p { margin: 0 15px 15px; color: var(--grigio); font-size: 0.95rem; }

/* BOTTONI STANDARD */
.btn {
  display: block;
  background: var(--verde);
  color: var(--white);
  padding: 12px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  margin: 10px 15px 15px;
  text-align: center;
  transition: 0.25s;
}

.btn:hover { background: var(--verde-chiaro); transform: translateY(-2px); }

/* BOTTONE GIGANTE (Migliorato) */
.btn-mappa-giant {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 250px;
  height: 250px;
  margin: 40px auto;
  border-radius: 50%;
  background: var(--verde);
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 800;
  text-decoration: none;
  text-align: center;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  transition: 0.3s;
}

.btn-mappa-giant:hover { transform: scale(1.05); background: var(--verde-chiaro); }

/* SPONSOR */
.vetrina-zyclora {
  background: var(--white);
  border-radius: 16px;
  padding: 20px;
  margin: 40px 0;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.vetrina-zyclora-img img { width: 100%; max-width: 400px; }

/* RESPONSIVE */
@media (min-width: 600px) {
  .grid-attivita { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .grid-attivita { grid-template-columns: repeat(3, 1fr); }
}

footer { margin: 60px 0; text-align: center; }
.btn-trekking { 
  display: inline-block;
  background: var(--verde-premium2);
  color: var(--white);
  padding: 12px 24px;
  border-radius: 50px;
  text-decoration: none;
  margin: 5px;
}