/* IRIM 2025 - Modern Robotics Theme */
:root {
  /* Color scheme based on IRIM logo */
  --primary-blue: #003366;    /* Dark blue from logo */
  --secondary-blue: #336699;  /* Medium blue from logo */
  --accent-color: #6699cc;    /* Light blue from logo */
  --highlight: #99ccff;       /* Highlight blue */
  --background: #ffffff;      /* White background */
  --light-bg: #f5f8fa;       /* Light gray background */
  --text: #333333;           /* Dark gray text */
  --text-light: #666666;     /* Lighter text */
  --header-height: 80px;
  --font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

/* Base Styles */
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  background: var(--background);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--primary-blue);
  margin-top: 0;
  line-height: 1.3;
}

h1 { font-size: 2.5rem; margin-bottom: 1.5rem; }
h2 { font-size: 2rem; margin-bottom: 1.25rem; }
h3 { font-size: 1.5rem; margin-bottom: 1rem; }

p {
  margin: 0 0 1.5rem 0;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-blue);
  text-decoration: underline;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
  padding-bottom: 1rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--accent-color);
  border-radius: 2px;
}

/* Header */
header {
  background: var(--primary-blue);
  color: white;
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  box-shadow: var(--box-shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

.logo-container {
  display: flex;
  align-items: center;
  background: white;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.logo {
  height: 40px;
  width: auto;
  margin-right: 1rem;
}

.fit4med-logo {
  height: 35px;
  width: auto;
  margin-left: 1rem;
  padding-left: 1rem;
  border-left: 1px solid #eee;
}

/* Navigation */
.nav-container {
  display: flex;
  align-items: center;
  margin-left: auto;
}

nav a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  margin-left: 2rem;
  font-weight: 500;
  font-size: 1rem;
  transition: var(--transition);
  padding: 0.5rem 0;
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--highlight);
  transition: var(--transition);
}

nav a:hover,
nav a.active {
  color: white;
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none; /* Nascosto di default */
  background: none;
  border: none;
  color: white;
  font-size: 2rem;
  cursor: pointer;
  margin-left: auto;
  padding: 0.5rem 1rem;
  z-index: 1001;
  transition: transform 0.3s ease;
}

.menu-toggle:focus {
  outline: 2px solid var(--highlight);
  outline-offset: 2px;
}

/* Stili per la navigazione desktop */
#main-nav {
  display: flex;
  margin-left: auto;
}

#main-nav a {
  color: white;
  text-decoration: none;
  padding: 0.5rem 1rem;
  margin: 0 0.25rem;
  border-radius: 4px;
  transition: background-color 0.3s ease;
}

#main-nav a:hover,
#main-nav a.active {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
  color: white;
  padding: 6rem 0;
  text-align: center;
}

.hero h1 {
  color: white;
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.25rem;
  max-width: 800px;
  margin: 0 auto 2rem;
  opacity: 0.9;
}

/* Footer */
footer {
  background: var(--primary-blue);
  color: white;
  padding: 3rem 0;
  margin-top: 4rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-section {
  flex: 1;
  min-width: 250px;
}

.footer-section h3 {
  color: white;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.75rem;
}

.footer-section h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 2px;
  background: var(--highlight);
}

.footer-section p {
  opacity: 0.9;
  margin-bottom: 1rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-links a {
  color: white;
  font-size: 1.25rem;
  opacity: 0.8;
  transition: var(--transition);
}

.social-links a:hover {
  opacity: 1;
  color: var(--highlight);
}

.footer-bottom {
  text-align: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.8;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  min-height: calc(100vh - var(--header-height) - 220px);
  background-color: var(--background);
  line-height: 1.7;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .container {
    padding: 0 2rem;
  }
  
  .section {
    padding: 3rem 0;
  }
  
  h1 {
    font-size: 2.25rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
}

/* Stili per la versione desktop */
#main-nav {
  display: flex;
  margin-left: auto;
}

#main-nav a {
  color: white;
  text-decoration: none;
  padding: 0.5rem 1rem;
  margin: 0 0.25rem;
  border-radius: 4px;
  transition: background-color 0.3s ease;
}

#main-nav a:hover,
#main-nav a.active {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Stili per la versione mobile */
.menu-toggle {
  display: none; /* Nascosto di default (versione desktop) */
  background: none;
  border: none;
  color: white;
  font-size: 1.8rem;
  cursor: pointer;
  padding: 0.5rem;
  margin-left: auto;
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex; /* Mostrato solo su mobile */
    align-items: center;
    justify-content: center;
  }
  
  #main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--primary-blue);
    flex-direction: column;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  }
  
  #main-nav.active {
    max-height: 500px; /* Altezza sufficiente per contenere i link */
    padding: 1rem 0;
  }
  
  #main-nav a {
    display: block;
    padding: 1rem 2rem;
    margin: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0;
    text-align: center;
  }
  
  #main-nav a:last-child {
    border-bottom: none;
  }
  
  .logo {
    height: 36px;
  }
}


.footer-greenbar {
  background: #009b4e; /* Verde istituzionale */
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.5rem 1rem;
  margin-top: 2rem;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-greenbar img {
  height: 70px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity 0.2s;
  display: inline-block;
  vertical-align: middle;
  margin: 0 15px;
}

.footer-greenbar img:hover {
  opacity: 1;
}

/* Stile per mobile */
@media (max-width: 768px) {
  .footer-greenbar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    justify-items: center;
    gap: 1.5rem 1rem;
    padding: 1.2rem 0.5rem;
  }
  
  .footer-greenbar img {
    height: 50px;
    max-width: 180px;
    margin: 10px auto;
  }
  
  /* Allinea i loghi in due righe da due */
  .footer-greenbar img:nth-child(odd) {
    justify-self: end;
    margin-right: 0.5rem;
  }
  
  .footer-greenbar img:nth-child(even) {
    justify-self: start;
    margin-left: 0.5rem;
  }
}

/* Topics Section */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.topic-card {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 60px;
  justify-content: space-between;
}

.topic-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.topic-card i {
  font-size: 2.5rem;
  margin-top: 1.5rem;
  order: 2;
}

.topic-card span {
  font-size: 1.1rem;
  color: #333;
  font-weight: 500;
  order: 1;
  display: block;
  margin-bottom: 1.5rem;
}