/* =========================================================
   BASE / RESET - OTTIMIZZATO PER MOBILE
========================================================= */
:root{
  /* Core palette */
  --text-primary: #1a1a1a;
  --text-secondary: #717182;

  --bg-white: #ffffff;
  --bg-soft: rgba(236, 236, 240, 0.3);

  --border-color: rgba(0, 0, 0, 0.10);
  --border-color-strong: rgba(0, 0, 0, 0.14);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.10), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);

  /* Ecosistema */
  --ecosystem-speed: 26s;
  
  /* Mobile spacing */
  --mobile-padding: 1rem;
  --mobile-gap: 1.25rem;
}

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

html{
  /* Previene zoom su input in iOS */
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body{
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'SF Pro', 'Helvetica Neue', Arial, sans-serif;
  font-size:16px;
  line-height:1.6;
  color:var(--text-primary);
  background-color:var(--bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden; /* Previene scroll orizzontale */
}

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


/* =========================================================
   CONTAINER UTILITIES - RESPONSIVE
========================================================= */
.container{
  max-width:1280px;
  margin:0 auto;
  padding:0 var(--mobile-padding);
}

.container-narrow{
  max-width:896px;
  margin:0 auto;
  padding:0 var(--mobile-padding);
}

.container-medium{
  max-width:1024px;
  margin:0 auto;
  padding:0 var(--mobile-padding);
}

@media (min-width:768px){
  :root{
    --mobile-padding: 1.5rem;
    --mobile-gap: 2rem;
  }
}


/* =========================================================
   HERO - OTTIMIZZATO MOBILE
========================================================= */
.hero-section{
  background-color:var(--bg-white);
  padding:2.5rem var(--mobile-padding);
}

@media (min-width:768px){
  .hero-section{ padding:5rem 1.5rem; }
}

.hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:2rem;
  align-items:center;
}

@media (min-width:768px){
  .hero-grid{ 
    grid-template-columns:1fr 1fr;
    gap:3rem;
  }
}

.hero-content{
  display:flex;
  flex-direction:column;
  gap:1rem;
}

@media (min-width:768px){
  .hero-content{ gap:1.5rem; }
}

.hero-title{
  font-size:clamp(1.75rem, 5vw, 3rem);
  font-weight:700;
  line-height:1.1;
  letter-spacing:-0.02em;
}

.hero-subtitle{
  font-size:clamp(1rem, 2.5vw, 1.25rem);
  color:var(--text-secondary);
  line-height:1.5;
}

.hero-description{
  font-size:clamp(0.9375rem, 2vw, 1rem);
  color:var(--text-secondary);
  line-height:1.6;
}

.hero-illustration{
  display:flex;
  align-items:center;
  justify-content:center;
  max-width:100%;
  overflow:hidden;
}


/* =========================================================
   SEZIONI / HEADER STANDARD - RESPONSIVE
========================================================= */
.section-header{
  margin-bottom:2rem;
  text-align:center;
}

@media (min-width:768px){
  .section-header{
    margin-bottom:4rem;
    text-align:left;
  }
}

.section-title{
  font-size:clamp(1.5rem, 4vw, 2.25rem);
  font-weight:700;
  margin-bottom:0.75rem;
}

@media (min-width:768px){
  .section-title{ margin-bottom:1rem; }
}

.section-description{
  font-size:clamp(0.9375rem, 2vw, 1.125rem);
  color:var(--text-secondary);
  max-width:100%;
  line-height:1.5;
}

@media (min-width:768px){
  .section-description{
    max-width:42rem;
    line-height:1.6;
  }
}


/* =========================================================
   MODULES - MOBILE FIRST
========================================================= */
.modules-section{
  background-color:var(--bg-soft);
  padding:3rem var(--mobile-padding);
}

@media (min-width:768px){
  .modules-section{ padding:6rem 1.5rem; }
}

.modules-list{
  display:flex;
  flex-direction:column;
  gap:1.5rem;
}

@media (min-width:768px){
  .modules-list{ gap:2rem; }
}

.module-card{
  background-color:var(--bg-white);
  border-radius:0.75rem;
  box-shadow:var(--shadow-md);
  overflow:hidden;
}

@media (min-width:768px){
  .module-card{ border-radius:1rem; }
}

.module-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:0;
  align-items:stretch;
}

@media (min-width:768px){
  .module-grid{ 
    grid-template-columns:1fr 1fr;
    gap:2rem;
    align-items:center;
  }

  .module-grid.reverse .module-content{ grid-column:2; }
  .module-grid.reverse .module-illustration{
    grid-column:1;
    grid-row:1;
  }
}

.module-content{
  padding:1.5rem;
  order:1;
}

/* Anchor offset: evita che lo sticky header copra la sezione */
#dryas-alert{
  scroll-margin-top: 140px; /* regola: 120–160 a seconda dell’header */
}

@media (min-width:768px){
  .module-content{ 
    padding:2.5rem;
    order:initial;
  }
}

.module-header{
  display:flex;
  align-items:center;
  gap:0.625rem;
  margin-bottom:0.875rem;
}

@media (min-width:768px){
  .module-header{
    gap:0.75rem;
    margin-bottom:1rem;
  }
}

.module-icon{
  padding:0.5rem;
  border-radius:0.5rem;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}

.module-icon i{
  width:20px;
  height:20px;
}

@media (min-width:768px){
  .module-icon i{
    width:24px;
    height:24px;
  }
}

.module-name{
  font-size:clamp(1.125rem, 3vw, 1.5rem);
  font-weight:700;
  line-height:1.2;
}

.module-description{
  font-size:clamp(0.9375rem, 2vw, 1.125rem);
  color:var(--text-secondary);
  margin-bottom:1rem;
  line-height:1.5;
}

@media (min-width:768px){
  .module-description{ 
    margin-bottom:1.5rem;
    line-height:1.6;
  }
}

.module-details{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:0.625rem;
  margin-bottom:1.5rem;
}

@media (min-width:768px){
  .module-details{
    gap:0.75rem;
    margin-bottom:2rem;
  }
}

.module-details li{
  display:flex;
  align-items:flex-start;
  gap:0.5rem;
  font-size:clamp(0.8125rem, 1.8vw, 0.875rem);
  color:var(--text-secondary);
  line-height:1.5;
}

.bullet{
  width:0.375rem;
  height:0.375rem;
  border-radius:50%;
  flex-shrink:0;
  margin-top:0.5rem;
}

.module-illustration{
  padding:1.5rem;
  display:flex;
  align-items:center;
  justify-content:center;
  order:0;
  background:linear-gradient(to bottom, transparent, var(--bg-soft));
}

@media (min-width:768px){
  .module-illustration{
    padding:2.5rem;
    order:initial;
    background:none;
  }
}


/* =========================================================
   BUTTONS - TOUCH FRIENDLY
========================================================= */
.btn{
  display:inline-block;
  padding:0.875rem 1.75rem;
  font-size:0.9375rem;
  font-weight:500;
  border-radius:9999px;
  border:none;
  cursor:pointer;
  transition: all 0.2s ease;
  text-decoration:none;
  text-align:center;
  
  /* Touch friendly */
  min-height:44px;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

@media (min-width:768px){
  .btn{
    padding:0.75rem 2rem;
    font-size:1rem;
  }
}

.btn-primary{
  background-color:#030213;
  color:#ffffff;
}

.btn-primary:active{
  background-color:#0a0a1a;
  transform: scale(0.98);
}

@media (hover: hover){
  .btn-primary:hover{
    background-color:#1a1a2e;
  }
}

.btn-outline{
  background-color:transparent;
  color:#030213;
  border:1px solid rgba(0, 0, 0, 0.2);
}

@media (hover: hover){
  .btn-outline:hover{
    background-color: rgba(0, 0, 0, 0.05);
  }
}

.btn:disabled{
  opacity:0.5;
  cursor:not-allowed;
}


/* =========================================================
   FAQ / ACCORDION - MOBILE OPTIMIZED
========================================================= */
.faq-section{
  background-color:var(--bg-white);
  padding:3rem var(--mobile-padding);
}

@media (min-width:768px){
  .faq-section{ padding:6rem 1.5rem; }
}

.accordion{
  display:flex;
  flex-direction:column;
  gap:0.75rem;
}

@media (min-width:768px){
  .accordion{ gap:1rem; }
}

.accordion-item{
  background-color:var(--bg-soft);
  border-radius:0.75rem;
  overflow:hidden;
}

.accordion-trigger{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:1rem 1.25rem;
  background:none;
  border:none;
  font-size:0.9375rem;
  font-weight:500;
  text-align:left;
  cursor:pointer;
  transition: background-color 0.2s ease;
  
  /* Touch friendly */
  min-height:56px;
  -webkit-tap-highlight-color: transparent;
}

@media (min-width:768px){
  .accordion-trigger{
    padding:1.25rem 1.5rem;
    font-size:1rem;
  }
}

@media (hover: hover){
  .accordion-trigger:hover{
    background-color: rgba(236, 236, 240, 0.5);
  }
}

.accordion-trigger:active{
  background-color: rgba(236, 236, 240, 0.7);
}

.accordion-trigger span{ 
  padding-right:0.75rem;
  line-height:1.4;
}

.accordion-icon{
  flex-shrink:0;
  width:20px;
  height:20px;
  transition: transform 0.3s ease;
}

.accordion-item.active .accordion-icon{
  transform: rotate(180deg);
}

.accordion-content{
  max-height:0;
  overflow:hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color:var(--text-secondary);
  line-height:1.6;
  font-size:0.9375rem;
}

@media (min-width:768px){
  .accordion-content{ font-size:1rem; }
}

.accordion-item.active .accordion-content{
  max-height:800px;
  padding: 0 1.25rem 1rem 1.25rem;
}

@media (min-width:768px){
  .accordion-item.active .accordion-content{
    padding: 0 1.5rem 1.25rem 1.5rem;
  }
}


/* =========================================================
   CHI SIAMO - MOBILE FIRST
========================================================= */
.chi-siamo-section{
  background-color:var(--bg-soft);
  padding:3rem var(--mobile-padding);
}

@media (min-width:768px){
  .chi-siamo-section{ padding:6rem 1.5rem; }
}

.chi-siamo-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:2rem;
  align-items:center;
  margin-top:1.5rem;
}

@media (min-width:768px){
  .chi-siamo-grid{
    grid-template-columns:1fr 1fr;
    gap:4rem;
    margin-top:2rem;
  }
}

.chi-siamo-left{
  display:flex;
  flex-direction:column;
  gap:1.25rem;
}

@media (min-width:768px){
  .chi-siamo-left{ gap:1.5rem; }
}

.chi-siamo-intro{
  display:flex;
  flex-direction:column;
  gap:0.875rem;
  font-size:clamp(0.9375rem, 2vw, 1.125rem);
  color:var(--text-secondary);
  line-height:1.6;
}

.chi-siamo-intro strong{ color:var(--text-primary); }

.chi-siamo-highlight{
  background-color:var(--bg-white);
  border-radius:0.75rem;
  padding:1.25rem 1.5rem;
  border:1px solid var(--border-color);
  box-shadow:var(--shadow-sm);
  font-weight:600;
  color:var(--text-primary);
  font-size:clamp(0.9375rem, 2vw, 1rem);
  line-height:1.5;
}

@media (min-width:768px){
  .chi-siamo-highlight{
    border-radius:1rem;
    padding:1.5rem 1.75rem;
  }
}

.chi-siamo-link{
  display:inline-flex;
  align-items:center;
  gap:0.5rem;
  font-weight:600;
  color:var(--text-primary);
  text-decoration:none;
  width:fit-content;
  font-size:0.9375rem;
  transition: all 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  padding:0.5rem 0;
}

@media (min-width:768px){
  .chi-siamo-link{ font-size:1rem; }
}

.chi-siamo-link:active{
  transform: translateX(2px);
}

@media (hover: hover){
  .chi-siamo-link:hover{
    transform: translateX(2px);
    opacity:0.9;
  }
}

.chi-siamo-right{
  display:flex;
  justify-content:center;
}

.chi-siamo-photo{
  width:100%;
  border-radius:0.75rem;
  overflow:hidden;
  background:var(--bg-white);
  box-shadow:var(--shadow-lg);
  border:1px solid rgba(0,0,0,0.08);
}
.chi-siamo-photo img{
  width: 100%;
  height: auto;
  display: block;
}

@media (min-width:768px){
  .chi-siamo-photo{ border-radius:1rem; }
}


/* =========================================================
   ECOSISTEMA (GALASSIA) - MOBILE OPTIMIZED
========================================================= */
.ecosystem{
  position:relative;
  padding:3rem 0 3.5rem;
  overflow:hidden;
}

@media (min-width:768px){
  .ecosystem{ padding:5rem 0 6rem; }
}

.ecosystem::before{
  content:'';
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:90%;
  max-width:760px;
  height:1px;
  background: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.12) 50%, transparent 100%);
}

.ecosystem h3{
  font-size:clamp(0.6875rem, 1.5vw, 0.8125rem);
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:0.1em;
  opacity:0.7;
  margin-bottom:0.75rem;
  text-align:center;
}

@media (min-width:768px){
  .ecosystem h3{
    font-size:0.8125rem;
    margin-bottom:0.875rem;
  }
}

.ecosystem-subtitle{
  font-size:clamp(0.875rem, 2vw, 0.9375rem);
  line-height:1.5;
  opacity:0.75;
  text-align:center;
  max-width:90%;
  margin:0 auto 2.5rem;
  padding:0 var(--mobile-padding);
}

@media (min-width:768px){
  .ecosystem-subtitle{
    font-size:0.9375rem;
    max-width:560px;
    margin-bottom:3.5rem;
  }
}

.galaxy-container{
  position:relative;
  width:100%;
  max-width:340px;
  height:340px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:center;
}

@media (min-width:480px){
  .galaxy-container{
    max-width:420px;
    height:420px;
  }
}

@media (min-width:768px){
  .galaxy-container{
    max-width:520px;
    height:520px;
  }
}

.galaxy-center{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%, -50%);
  width:80px;
  height:80px;
  background:#fff;
  border-radius:999px;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
  z-index:10;
  border:2px solid rgba(0,0,0,0.18);
  box-shadow: 0 8px 32px rgba(0,0,0,0.10), 0 0 0 8px rgba(0,0,0,0.04);
  animation: ecosystemPulse 4s ease-in-out infinite;
  text-decoration:none;
  color:inherit;
  -webkit-tap-highlight-color: transparent;
}

@media (min-width:480px){
  .galaxy-center{
    width:96px;
    height:96px;
    gap:5px;
  }
}

@media (min-width:768px){
  .galaxy-center{
    width:140px;
    height:140px;
    gap:6px;
    box-shadow: 0 10px 46px rgba(0,0,0,0.10), 0 0 0 10px rgba(0,0,0,0.04);
  }
}

@keyframes ecosystemPulse{
  0%,100%{
    transform:translate(-50%, -50%) scale(1);
  }
  50%{
    transform:translate(-50%, -50%) scale(1.03);
  }
}

.galaxy-center-logo{
  width:48px;
  height:48px;
  object-fit:contain;
  display:block;
}

@media (min-width:480px){
  .galaxy-center-logo{
    width:56px;
    height:56px;
  }
}

@media (min-width:768px){
  .galaxy-center-logo{
    width:72px;
    height:72px;
  }
}

.galaxy-center-subtitle{
  font-size:0.5625rem;
  font-weight:600;
  letter-spacing:0.12em;
  text-transform:uppercase;
  opacity:0.65;
}

@media (min-width:480px){
  .galaxy-center-subtitle{ font-size:0.625rem; }
}

@media (min-width:768px){
  .galaxy-center-subtitle{
    font-size:0.625rem;
    letter-spacing:0.15em;
  }
}

.orbit{
  position:absolute;
  top:50%;
  left:50%;
  border:1px solid rgba(0,0,0,0.10);
  border-radius:999px;
  opacity:0.55;
  transform:translate(-50%, -50%);
  pointer-events:none;
}

.orbit-1{ width:160px; height:160px; }
.orbit-2{ width:240px; height:240px; opacity:0.42; }
.orbit-3{ width:320px; height:320px; opacity:0.30; }

@media (min-width:480px){
  .orbit-1{ width:200px; height:200px; }
  .orbit-2{ width:290px; height:290px; }
  .orbit-3{ width:380px; height:380px; }
}

@media (min-width:768px){
  .orbit-1{ width:260px; height:260px; }
  .orbit-2{ width:360px; height:360px; }
  .orbit-3{ width:460px; height:460px; }
}

.planet{
  position:absolute;
  width:56px;
  height:56px;
  border-radius:999px;
  background:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:10px;
  border:1px solid var(--border-color-strong);
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  cursor:pointer;
  text-decoration:none;
  color:inherit;
  z-index:5;
  -webkit-tap-highlight-color: transparent;

  animation: orbitUnified var(--ecosystem-speed) linear infinite;
  transform-origin:center;
}

@media (min-width:480px){
  .planet{
    width:64px;
    height:64px;
  }
}

@media (min-width:768px){
  .planet{
    width:92px;
    height:92px;
    padding:14px;
    box-shadow: 0 6px 26px rgba(0,0,0,0.10);
  }
}

.planet:active{
  transform: scale(0.95);
}

@media (hover: hover){
  .planet:hover{
    transform: scale(1.14);
    box-shadow: 0 10px 40px rgba(0,0,0,0.16);
    border-color: rgba(0,0,0,0.25);
    z-index:20;
  }
}

.planet img{
  width:100%;
  height:100%;
  object-fit:contain;
}

.planet-1{ --r:70px; --phase: 0deg; }
.planet-2{ --r:110px; --phase: 90deg; }
.planet-3{ --r:150px; --phase: 180deg; }
.planet-4{ --r:170px; --phase: 270deg; }

@media (min-width:480px){
  .planet-1{ --r:90px; }
  .planet-2{ --r:135px; }
  .planet-3{ --r:180px; }
  .planet-4{ --r:200px; }
}

@media (min-width:768px){
  .planet-1{ --r:120px; }
  .planet-2{ --r:170px; }
  .planet-3{ --r:220px; }
  .planet-4{ --r:250px; }
}

@keyframes orbitUnified{
  from{
    transform: rotate(var(--phase)) translateX(var(--r)) rotate(calc(-1 * var(--phase)));
  }
  to{
    transform: rotate(calc(var(--phase) + 360deg)) translateX(var(--r)) rotate(calc(-1 * (var(--phase) + 360deg)));
  }
}

.planet-info{
  position:absolute;
  bottom:-58px;
  left:50%;
  transform:translateX(-50%);
  text-align:center;
  white-space:nowrap;
  opacity:0;
  transition: opacity 0.25s ease;
  pointer-events:none;
  display:none;
}

@media (min-width:768px){
  .planet-info{ display:block; }
  
  @media (hover: hover){
    .planet:hover .planet-info{ opacity:1; }
  }
}

.planet-name{
  font-size:0.8125rem;
  font-weight:700;
  color:var(--text-primary);
}

.planet-desc{
  font-size:0.6875rem;
  opacity:0.75;
  color:var(--text-secondary);
}

.ecosystem-note{
  font-size:clamp(0.8125rem, 1.8vw, 0.875rem);
  line-height:1.6;
  opacity:0.7;
  font-style:italic;
  text-align:center;
  margin-top:2.5rem;
  padding:0 var(--mobile-padding);
}

@media (min-width:768px){
  .ecosystem-note{
    font-size:0.875rem;
    margin-top:3.375rem;
  }
}

.footer-decoration{
  width:34px;
  height:1px;
  margin:2rem auto 0;
  background: rgba(0,0,0,0.16);
}


/* =========================================================
   ACCESSIBILITY & PERFORMANCE
========================================================= */
@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .planet,
  .galaxy-center{
    animation:none !important;
  }
}

/* Focus visible per accessibilità tastiera */
:focus-visible {
  outline: 2px solid #030213;
  outline-offset: 2px;
}

/* Migliora performance scroll su mobile */
@media (max-width: 767px) {
  body {
    -webkit-overflow-scrolling: touch;
  }
}