@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Apple-like colors - Dark Gray theme */
  --apple-background: #1e1e1e; /* Grigio scuro invece di nero puro */
  --apple-background-alt: #2d2d2d; /* Grigio leggermente più chiaro */
  --apple-background-elevated: #3d3d3d; /* Grigio medio per elementi in evidenza */
  --apple-text: #ffffff;
  --apple-text-secondary: #a0a0a5;
  --apple-accent: #0a84ff;
  --apple-link: #5aa9ff;
  --apple-border: rgba(255, 255, 255, 0.15);
  --apple-card-glow: 0 0 15px rgba(10, 132, 255, 0.1);
  --warning-color: #ffcc00;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-s: 16px;
  --spacing-m: 24px;
  --spacing-l: 40px;
  --spacing-xl: 64px;

  /* Animation */
  --transition-standard: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', sans-serif;
  background-color: var(--apple-background);
  color: var(--apple-text);
  line-height: 1.47059;
  font-weight: 400;
  letter-spacing: -0.022em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 var(--spacing-m);
}

/* Work in progress banner */
.work-in-progress {
  background-color: var(--warning-color);
  color: #000000;
  text-align: center;
  padding: 5px 0;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  position: relative;
  z-index: 101;
  animation: pulse-warning 2s infinite;
}

@keyframes pulse-warning {
  0% { background-color: rgba(255, 204, 0, 0.7); }
  50% { background-color: rgba(255, 204, 0, 1); }
  100% { background-color: rgba(255, 204, 0, 0.7); }
}

/* Navigation */
.nav-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background-color: rgba(30, 30, 30, 0.8); /* Grigio scuro semi-trasparente */
  border-bottom: 1px solid var(--apple-border);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 48px;
  padding-top: 0;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--apple-text);
  text-decoration: none;
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  gap: var(--spacing-m);
}

.nav-link {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--apple-text);
  text-decoration: none;
  transition: var(--transition-fast);
  opacity: 0.8;
}

.nav-link:hover {
  opacity: 1;
}

.nav-link.active {
  font-weight: 500;
  opacity: 1;
  color: var(--apple-accent);
}

/* Hero Section */
.hero {
  padding-top: 120px; /* Aumentato per dare spazio alla navbar e al banner */
  padding-bottom: var(--spacing-xl);
  text-align: center;
}

.hero-title {
  font-size: 3rem;
  font-weight: 600;
  letter-spacing: -0.045em;
  margin-bottom: var(--spacing-s);
  background: linear-gradient(90deg, var(--apple-text) 70%, var(--apple-text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--apple-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-m);
}

.profile-image {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: var(--spacing-m);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 10px rgba(10, 132, 255, 0.2);
  border: 2px solid rgba(10, 132, 255, 0.3);
  transition: var(--transition-standard);
}

.profile-image:hover {
  border-color: var(--apple-accent);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(10, 132, 255, 0.4);
}

/* Sections */
.section {
  padding: var(--spacing-l) 0;
  opacity: 1; /* Cambiato da 0 a 1 per assicurarsi che tutte le sezioni siano visibili */
  transform: translateY(0); /* Rimosso l'offset iniziale */
  transition: var(--transition-standard);
  display: block; /* Assicura che tutte le sezioni siano visibili */
  position: relative; /* Cambiato da absolute a relative */
  height: auto; /* Altezza automatica invece di 100% */
}

.section.active {
  opacity: 1;
  transform: translateY(0);
  z-index: 1; /* Assicura che la sezione attiva sia in primo piano */
}

.section-title {
  font-size: 2.5rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-m);
  color: var(--apple-accent);
}

.section-subtitle {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--apple-text-secondary);
  margin-bottom: var(--spacing-l);
  max-width: 600px;
}

/* About section */
.about-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-l);
}

.about-text {
  font-size: 1.25rem;
  line-height: 1.5;
  max-width: 700px;
}

.info-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-s);
  margin-bottom: var(--spacing-s);
}

.info-icon {
  color: var(--apple-accent);
}

/* Skills section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-l);
}

.skill-category {
  margin-bottom: var(--spacing-l);
}

.skill-category-title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: var(--spacing-m);
  color: var(--apple-text);
}

.skill-item {
  margin-bottom: var(--spacing-m);
}

.skill-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-xs);
}

.skill-name {
  font-weight: 500;
}

.skill-level {
  color: var(--apple-text-secondary);
  font-weight: 400;
}

.skill-bar {
  height: 6px;
  background-color: var(--apple-background-elevated);
  border-radius: 3px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--apple-accent), #5ac8fa);
  border-radius: 3px;
  width: 0;
  transition: width 1.5s cubic-bezier(.26,1.36,.65,1);
}

/* Tags grid */
.tags-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tag {
  padding: 4px 12px;
  background-color: var(--apple-background-elevated);
  border-radius: 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--apple-text-secondary);
  transition: var(--transition-fast);
}

.tag:hover {
  background-color: rgba(10, 132, 255, 0.2);
  color: var(--apple-accent);
}

/* Certificates section */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-l);
}

.certificate-card {
  background-color: var(--apple-background-alt);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition-fast);
  border: 1px solid var(--apple-border);
}

.certificate-card:hover {
  transform: scale(1.02);
  box-shadow: var(--apple-card-glow);
  border-color: rgba(10, 132, 255, 0.4);
}

.certificate-image {
  height: 160px;
  overflow: hidden;
  background-color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.certificate-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.certificate-info {
  padding: var(--spacing-m);
}

.certificate-title {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.certificate-issuer {
  color: var(--apple-text-secondary);
  font-size: 0.875rem;
}

/* Projects section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-l);
}

.project-card {
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition-fast);
  border: 1px solid var(--apple-border);
  background-color: var(--apple-background-alt);
}

.project-card:hover {
  transform: scale(1.02);
  box-shadow: var(--apple-card-glow);
  border-color: rgba(10, 132, 255, 0.4);
}

.project-info {
  padding: var(--spacing-m);
}

.project-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.project-link {
  color: var(--apple-link);
  text-decoration: none;
}

.project-link svg {
  width: 20px;
  height: 20px;
}

.project-description {
  color: var(--apple-text);
  margin-bottom: var(--spacing-s);
  font-size: 0.9375rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.project-tag {
  padding: 3px 10px;
  background-color: var(--apple-background-elevated);
  border-radius: 12px;
  font-size: 0.75rem;
  color: var(--apple-text-secondary);
}

/* Community section */
.communities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-l);
}

.community-card {
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition-fast);
  border: 1px solid var(--apple-border);
  background-color: var(--apple-background-alt);
}

.community-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--apple-card-glow);
  border-color: rgba(10, 132, 255, 0.4);
}

.community-image {
  height: 160px;
  overflow: hidden;
}

.community-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-fast);
}

.community-card:hover .community-image img {
  transform: scale(1.05);
}

.community-info {
  padding: var(--spacing-m);
}

.community-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.community-description {
  color: var(--apple-text-secondary);
  margin-bottom: var(--spacing-m);
  font-size: 0.9375rem;
}

.apple-button {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--apple-accent);
  color: white;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 980px;
  text-decoration: none;
  transition: background-color 0.2s;
}

.apple-button:hover {
  background-color: #0077ED;
  box-shadow: 0 0 10px rgba(10, 132, 255, 0.5);
}

.apple-button-secondary {
  background-color: var(--apple-background-elevated);
  color: var(--apple-accent);
}

.apple-button-secondary:hover {
  background-color: rgba(10, 132, 255, 0.2);
}

/* Footer */
.footer {
  padding: var(--spacing-l) 0;
  border-top: 1px solid var(--apple-border);
  margin-top: var(--spacing-xl);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-m);
}

/* Social icons */
.social-links {
  display: flex;
  gap: var(--spacing-m);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--apple-background-elevated);
  transition: var(--transition-fast);
}

.social-link:hover {
  background-color: var(--apple-accent);
  transform: scale(1.1);
}

.social-link svg {
  width: 20px;
  height: 20px;
  fill: var(--apple-text);
  transition: var(--transition-fast);
}

.social-link:hover svg {
  fill: #ffffff;
}

.copyright {
  color: var(--apple-text-secondary);
  font-size: 0.8125rem;
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-up {
  animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes glow {
  0% { box-shadow: 0 0 5px rgba(10, 132, 255, 0.5); }
  50% { box-shadow: 0 0 20px rgba(10, 132, 255, 0.8); }
  100% { box-shadow: 0 0 5px rgba(10, 132, 255, 0.5); }
}

.glow-effect {
  animation: glow 2s infinite;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero {
    padding-top: 150px; /* Ancora più spazio su dispositivi mobili */
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .nav-links {
    display: none;
  }
  
  .skills-grid,
  .projects-grid,
  .certificates-grid,
  .communities-grid {
    grid-template-columns: 1fr;
  }
}