/* Reset & Base Styles */
:root {
  --color-primary: #005f73;
  --color-primary-dark: #003845;
  --color-accent: #f7931e;
  --color-accent-hover: #d67d0f;
  --color-bg: #f7f9fc;
  --color-text: #495057;
  --color-text-muted: #6c757d;
  --color-border: #e0e4ec;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --container-width: 1200px;
  --border-radius: 8px;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

ul {
  list-style: none;
}

/* Layout Utilities */
.container {
  width: 90%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.section.why-us {
  background-color: rgb(0, 96, 136);
}

.text-center {
  text-align: center;
}

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

/* Typography */
h1, h2, h3, h4 {
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
}

h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
  position: relative;
  display: block;
}

h2::after {
  content: '';
  display: block;
  width: 50%;
  height: 3px;
  background-color: var(--color-accent);
  margin: var(--spacing-sm) auto 0;
  border-radius: 2px;
}

h2.text-center {
  text-align: center;
  margin: 0 auto;
}

h3 {
  font-size: 1.5rem;
  color: var(--color-primary-dark);
}

p {
  margin-bottom: var(--spacing-md);
}

.lead {
  font-size: 1.25rem;
  color: #495057;
}

/* Centering on wrap for headings and lead text */
h1, h2.text-center, .lead {
  text-align: center;
}

/* Components */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn-accent {
  background-color: var(--color-accent);
  color: white;
}

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

.btn-group {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--spacing-lg);
}

/* Hero Section */
.hero {
  background-color: var(--color-bg);
  padding: 4rem 0;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('img/etna.jpg');
  background-size: cover;
  background-position: center top;
  opacity: 0.3;
  -webkit-mask-image: linear-gradient(to bottom, black 50%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 50%, transparent 100%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-logo {
  max-width: 250px;
  margin: 0 auto var(--spacing-lg);
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

/* Chi Siamo */
.about-details {
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  margin-top: var(--spacing-lg);
  border-left: 4px solid var(--color-primary);
}

/* Servizi */
.services-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.service-card {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
  border: 1px solid var(--color-border);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  color: var(--color-accent);
}

.service-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  filter: invert(54%) sepia(86%) saturate(608%) hue-rotate(356deg) brightness(100%) contrast(101%);
}

/* Gallery */
.gallery-grid {
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.gallery-item {
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  aspect-ratio: 4/3;
  cursor: pointer; /* Aggiunto per indicare cliccabilità */
}

.gallery-item img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.fade-next {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
  z-index: 10;
  pointer-events: none;
}

.fade-next img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.gallery-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.95rem;
  color: white;
  text-align: center;
  background: rgba(0, 0, 0, 0.7);
  z-index: 3;
  pointer-events: none;
}

.gallery-item:hover {
  box-shadow: var(--shadow-md);
}

/* Why Us */
.why-us {
  background-color: var(--color-primary);
  color: white;
}

.why-us h2 {
  color: var(--color-accent);
}

.why-us-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  margin-top: var(--spacing-lg);
}

.feature-item {
  text-align: center;
  padding: var(--spacing-md);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
}

.feature-item h3 {
  color: white;
  margin-bottom: var(--spacing-sm);
}

/* Contact Section */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
  margin-top: var(--spacing-lg);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.1rem;
}

.contact-link:hover {
  color: var(--color-primary);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.social-icon {
  width: 32px;
  height: 32px;
  transition: transform 0.3s ease;
}

.social-icon:hover {
  transform: scale(1.1);
}

/* Footer */
.site-footer {
  background-color: var(--color-primary-dark);
  color: white;
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-xl);
  text-align: center;
}

.footer-logo {
  max-width: 150px;
  margin: 0 auto var(--spacing-lg);
}

.footer-logo img {
  margin: 0 auto;
}

.footer-info {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
}

.footer-info p {
  margin-bottom: var(--spacing-sm);
}

.footer-divider {
  height: 1px;
  background-color: rgba(255, 255, 255, 0.1);
  margin: var(--spacing-lg) auto;
  width: 50%;
}

.footer-credit {
  font-size: 0.8rem;
  margin-top: var(--spacing-md);
  opacity: 0.6;
}

/* Lightbox */
#lightbox {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  display: none;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

#lightbox.active {
  display: flex;
}

#lightbox img {
  max-width: 90%;
  max-height: 80vh;
  object-fit: contain;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
  border: 2px solid white;
}

.lightbox-caption {
  margin-top: 1rem;
  color: white;
  font-size: 1.2rem;
  text-align: center;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  color: white;
  font-size: 3rem;
  cursor: pointer;
  user-select: none;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: white;
  font-size: 3rem;
  cursor: pointer;
  user-select: none;
  padding: 20px;
  background-color: rgba(0,0,0,0.3);
  border-radius: 50%;
  transition: background-color 0.3s;
}

.lightbox-nav:hover {
  background-color: rgba(0,0,0,0.6);
}

.lightbox-prev {
  left: 20px;
}

.lightbox-next {
  right: 20px;
}