/* Stili per il sito web interattivo e moderno */

/* Variabili CSS */
:root {
  /* Palette colori principale */
  --color-primary: #0056b3;      /* Blu - colore principale */
  --color-secondary: #00a878;    /* Verde - colore secondario */
  --color-accent: #ff6b35;       /* Arancione - colore accent */
  --color-background: #f8f9fa;   /* Grigio chiaro - sfondo */
  --color-background-alt: #eef1f5; /* Grigio più chiaro - sfondo alternativo */
  --color-text: #333333;         /* Grigio scuro - testo principale */
  --color-text-light: #666666;   /* Grigio medio - testo secondario */
  --color-border: #dddddd;       /* Grigio chiaro - bordi */
  --color-success: #28a745;      /* Verde - successo/risparmio */
  --color-warning: #ffc107;      /* Giallo - avviso */
  --color-danger: #dc3545;       /* Rosso - pericolo/costi */
  --color-white: #ffffff;        /* Bianco */
  --color-trasparent: #ffffff;   /* Trasparente */
  
  /* Tipografia */
  --font-family-heading: 'Montserrat', sans-serif;
  --font-family-body: 'Open Sans', sans-serif;
  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-md: 1.125rem;     /* 18px */
  --font-size-lg: 1.25rem;      /* 20px */
  --font-size-xl: 1.5rem;       /* 24px */
  --font-size-2xl: 1.875rem;    /* 30px */
  --font-size-3xl: 2.25rem;     /* 36px */
  --font-size-4xl: 3rem;        /* 48px */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-loose: 1.8;
  
  /* Spaziatura */
  --spacing-xs: 0.25rem;        /* 4px */
  --spacing-sm: 0.5rem;         /* 8px */
  --spacing-md: 1rem;           /* 16px */
  --spacing-lg: 1.5rem;         /* 24px */
  --spacing-xl: 2rem;           /* 32px */
  --spacing-2xl: 3rem;          /* 48px */
  --spacing-3xl: 4rem;          /* 64px */
  
  /* Bordi e ombre */
  --radius-sm: 0.25rem;         /* 4px */
  --radius-md: 0.5rem;          /* 8px */
  --radius-lg: 1rem;            /* 16px */
  --radius-full: 9999px;        /* Bordo completamente arrotondato */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
  
  /* Layout */
  --container-width: 1280px;    /* Larghezza massima del contenuto */
  --header-height: 100px;        /* Altezza dell'header */
  --header-height-scrolled: 80px; /* Altezza dell'header dopo lo scroll */
  --footer-padding: 3rem;       /* Padding del footer */
  
  /* Transizioni */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Reset e stili di base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-md);
}

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

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

a:hover {
  color: var(--color-secondary);
}

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

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-alt {
  background-color: var(--color-background-alt);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.header.scrolled {
  height: var(--header-height-scrolled);
  box-shadow: var(--shadow-md);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 80px;
  transition: height var(--transition-normal);
}

.header.scrolled .logo img {
  height: 75px;
}

/* Navigazione */
.nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
}

.nav-item {
  margin-left: var(--spacing-lg);
}

.nav-link {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-decoration: none;
  position: relative;
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-normal);
}

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

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
}

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

.nav-cta {
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.nav-cta:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.nav-ctb {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.nav-ctb:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Menu mobile */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: var(--color-primary);
  transition: all var(--transition-normal);
}

/* Hero Section */
.hero {
  height: var;
  min-height: 800px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: var;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: -1;
}

.hero-content {
  max-width: 1280px;
  color: var(--color-white);
  z-index: 1;
}

.hero-contenta {
  max-width: 1280px;
  color: var(--color-trasparent);
  z-index: 1;
}

.hero-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
  text-align: center;
}

.hero-titlea {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
  text-align: center;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-white);
  text-align: center;
}

.hero-subtitlea {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-medium);
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  text-decoration: none;
  border: 2px solid transparent;
}

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

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

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

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

.btn-outline {
  background-color: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}

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

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-md);
}

/* Cards */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  height: 100%;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  overflow: hidden;
}

.carda {
  background-color: var(--color-trasparent);
  opacity: 0.95;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  height: 100%;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  overflow: hidden;
}

.cardb {
  background-color: var(--color-trasparent);
  opacity: 0.80;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  height: 100%;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

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

.card-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--color-text-light);
}

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

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-cols-5 {
  grid-template-columns: repeat(5, 1fr);
}

.grid-cols-8 {
  grid-template-columns: repeat(8, 1fr);
}

.grid-cols-10 {
  grid-template-columns: repeat(10, 1fr);
}

/* Testimonials */
.testimonial {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
  position: relative;
}

.testimonial::before {
  content: '"';
  position: absolute;
  top: 10px;
  left: 20px;
  font-size: 5rem;
  color: var(--color-primary);
  opacity: 0.1;
  font-family: serif;
}

.testimonial-text {
  font-style: italic;
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
}

.testimonial-author {
  font-weight: var(--font-weight-bold);
}

.testimonial-role {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

/* Stats */
.stats {
  text-align: center;
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: var(--font-size-md);
  color: var(--color-text-light);
}

/* CTA Banner */
.cta-banner {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-2xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0,86,179,0.8) 0%, rgba(0,168,120,0.8) 100%);
  z-index: 1;
}

.cta-content {
  position: relative;
  z-index: 2;
}

.cta-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
}

.cta-subtitle {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Process Steps */
.process {
  position: relative;
}

.process::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 2px;
  background-color: var(--color-border);
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin: 0 auto var(--spacing-md);
}

.step-title {
  margin-bottom: var(--spacing-sm);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-xs);
}

.form-control {
  display: block;
  width: 40%;
  padding: var(--spacing-sm);
  font-family: var(--font-family-body);
  font-size: var(--font-size-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.form-controla {
  display: block;
  width: 70%;
  padding: var(--spacing-sm);
  font-family: var(--font-family-body);
  font-size: var(--font-size-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}
.form-control:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

.form-control.is-valid {
  border-color: var(--color-success);
}

.form-control.is-invalid {
  border-color: var(--color-danger);
}

.form-feedback {
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

.form-feedback.invalid {
  color: var(--color-danger);
}

/* Tabs */
.tabs {
  margin-bottom: var(--spacing-lg);
}

.tab-nav {
  display: flex;
  list-style: none;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-md);
}

.tab-item {
  margin-right: block(--spacing-lg);
}

.tab-link {
  display: var;
  padding: var(--spacing-sm) var(--spacing-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-light);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-normal);
}

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

.tab-link.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn var(--transition-normal);
}

/* Accordion */
.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.accordion-header {
  padding: var(--spacing-md);
  background-color: var(--color-white);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color var(--transition-normal);
}

.accordion-header:hover {
  background-color: var(--color-background-alt);
}

.accordion-title {
  margin: 0;
  font-size: var(--font-size-md);
}

.accordion-icon {
  transition: transform var(--transition-normal);
}

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

.accordion-content {
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-normal);
}

.accordion-item.active .accordion-content {
  padding: var(--spacing-md);
  max-height: 500px;
}

/* Footer */
.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
}

.footer-list {
  list-style: none;
}

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

.footer-link {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-normal);
}

.footer-link:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
}

/* Animazioni */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInUp {
  from {
    transform: translateY(50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    transform: translateX(-50px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideInRight {
  from {
    transform: translateX(50px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

/* Classi di animazione */
.animate-fadeIn {
  animation: fadeIn 1s ease-in-out;
}

.animate-slideInUp {
  animation: slideInUp 0.8s ease-in-out;
}

.animate-slideInLeft {
  animation: slideInLeft 0.8s ease-in-out;
}

.animate-slideInRight {
  animation: slideInRight 0.8s ease-in-out;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* Utility classes */
.text-center {
  text-align: center;
}

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

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

.text-primary {
  color: var(--color-primary);
}

.text-secondary {
  color: var(--color-secondary);
}

.text-accent {
  color: var(--color-accent);
}

.text-white {
  color: var(--color-white);
}

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

.bg-secondary {
  background-color: var(--color-secondary);
}

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

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

.mb-xs {
  margin-bottom: var(--spacing-xs);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

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

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.mt-xs {
  margin-top: var(--spacing-xs);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

/* Media queries */
@media (max-width: 1124px) {
  :root {
    --font-size-4xl: 2.5rem;
    --font-size-3xl: 2rem;
  }
  
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-cols-5 {
    grid-template-columns: repeat(2, 1fr);
  }

.grid-cols-8 {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
    --spacing-3xl: 3rem;
  }
  
  .grid-cols-3, .grid-cols-2 {
    grid-template-columns: 1fr;
  }
  
  .process::before {
    display: none;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .nav-list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--color-white);
    flex-direction: column;
    align-items: center;
    overflow: hidden;
    transition: height var(--transition-normal);
    box-shadow: var(--shadow-md);
  }
  
  .nav-list.active {
    height: calc(100vh - var(--header-height));
    padding: var(--spacing-lg) 0;
  }
  
  .nav-item {
    margin: var(--spacing-sm) 0;
  }
  
  .hero {
    height: auto;
    min-height: 500px;
    padding-top: calc(var(--header-height) + var(--spacing-xl));
    padding-bottom: var(--spacing-xl);
  }
}

@media (max-width: 576px) {
  :root {
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
    --spacing-3xl: 2.5rem;
    --spacing-2xl: 2rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .tab-nav {
    flex-wrap: wrap;
  }
  
  .tab-item {
    margin-bottom: var(--spacing-xs);
  }
}