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

:root {
  /* Colori */
  --color-surface: #f9f9f9;
  --color-surface-dim: #dadada;
  --color-surface-bright: #f9f9f9;
  --color-surface-container-lowest: #ffffff;
  --color-surface-container-low: #f3f3f3;
  --color-surface-container: #eeeeee;
  --color-surface-container-high: #e8e8e8;
  --color-surface-container-highest: #e2e2e2;
  --color-on-surface: #1a1c1c;
  --color-on-surface-variant: #444748;
  --color-inverse-surface: #2f3131;
  --color-inverse-on-surface: #f1f1f1;
  --color-outline: #747878;
  --color-outline-variant: #c4c7c7;
  --color-surface-tint: #5f5e5e;
  --color-primary: #181919; /* Antracite */
  --color-on-primary: #ffffff;
  --color-primary-container: #2d2d2d;
  --color-on-primary-container: #959494;
  --color-inverse-primary: #c8c6c6;
  --color-secondary: #a23f00; /* Rame Accento */
  --color-on-secondary: #ffffff;
  --color-secondary-container: #fc7127;
  --color-on-secondary-container: #5c2000;
  --color-tertiary: #0e1a1b;
  --color-on-tertiary: #ffffff;
  --color-tertiary-container: #232f30;
  --color-on-tertiary-container: #8a9798;
  --color-error: #ba1a1a;
  --color-on-error: #ffffff;
  --color-error-container: #ffdad6;
  --color-on-error-container: #93000a;
  --color-background: #f9f9f9;
  --color-on-background: #1a1c1c;
  --color-surface-variant: #e2e2e2;
  --color-border: #e5e5e5;
  --color-input-focus: #2d2d2d;

  /* Tipografia */
  --font-family: 'Inter', sans-serif;

  /* Arrotondamento */
  --rounded-sm: 0.25rem;
  --rounded-default: 0.5rem;
  --rounded-md: 0.75rem;
  --rounded-lg: 1rem;
  --rounded-xl: 1.5rem;
  --rounded-full: 9999px;

  /* Spaziatura */
  --spacing-container-max: 1280px;
  --spacing-gutter: 24px;
  --spacing-margin: 40px;
  --spacing-unit-xs: 4px;
  --spacing-unit-sm: 8px;
  --spacing-unit-md: 16px;
  --spacing-unit-lg: 24px;
  --spacing-unit-xl: 48px;
  --spacing-unit-xxl: 80px;

  /* Elevazione */
  --shadow-level-1: 0px 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-level-2: 0px 12px 24px rgba(0, 0, 0, 0.08);
  --shadow-level-3: 0px 24px 48px rgba(0, 0, 0, 0.12);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--color-background);
  color: var(--color-on-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Classi Tipografiche */
.display-lg {
  font-family: var(--font-family);
  font-size: 48px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.headline-lg {
  font-family: var(--font-family);
  font-size: 32px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.headline-md {
  font-family: var(--font-family);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.3;
}

.body-lg {
  font-family: var(--font-family);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.6;
}

.body-md {
  font-family: var(--font-family);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
}

.label-md {
  font-family: var(--font-family);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.label-sm {
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

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

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--spacing-gutter);
}

.col-12 { grid-column: span 12; }
.col-8 { grid-column: span 8; }
.col-6 { grid-column: span 6; }
.col-4 { grid-column: span 4; }
.col-3 { grid-column: span 3; }

@media (max-width: 1024px) {
  .col-8, .col-6, .col-4, .col-3 {
    grid-column: span 6;
  }
  .container {
    padding-left: var(--spacing-unit-lg);
    padding-right: var(--spacing-unit-lg);
  }
}

@media (max-width: 640px) {
  .col-8, .col-6, .col-4, .col-3 {
    grid-column: span 12;
  }
  .grid-12 {
    gap: var(--spacing-unit-md);
  }
}

.section-gap {
  margin-top: var(--spacing-unit-xxl);
  margin-bottom: var(--spacing-unit-xxl);
}

/* Header & Nav */
.header-wrapper {
  background-color: var(--color-surface-container-lowest);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-family: var(--font-family);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-unit-sm);
  text-decoration: none;
}

.logo span {
  color: var(--color-secondary);
}

.nav-links {
  display: flex;
  gap: var(--spacing-unit-lg);
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--color-on-surface-variant);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-unit-md);
}

/* Hero Section */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #181919 0%, #2c2d2e 100%);
  color: var(--color-surface-container-lowest);
  border-radius: var(--rounded-lg);
  padding: 80px var(--spacing-margin);
  overflow: hidden;
  margin-top: var(--spacing-unit-lg);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 650px;
}

.hero-subtitle {
  color: var(--color-secondary-container);
  margin-bottom: var(--spacing-unit-sm);
}

.hero-title {
  margin-bottom: var(--spacing-unit-md);
}

.hero-desc {
  color: var(--color-surface-dim);
  margin-bottom: var(--spacing-unit-xl);
}

.hero-visual {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(162, 63, 0, 0.15) 0%, transparent 70%);
  z-index: 1;
}

@media (max-width: 768px) {
  .hero-section {
    padding: 40px var(--spacing-unit-lg);
  }
  .hero-visual {
    display: none;
  }
}

/* Pannello Scelte Rapide (Overlapping Hero) */
.search-panel {
  background-color: var(--color-surface-container-lowest);
  border-radius: var(--rounded-default);
  box-shadow: var(--shadow-level-2);
  padding: var(--spacing-unit-lg);
  margin-top: -40px;
  position: relative;
  z-index: 10;
  border: 1px solid var(--color-border);
}

.action-buttons-wrap {
  display: flex;
  justify-content: center;
  gap: var(--spacing-unit-lg);
  flex-wrap: wrap;
}

@media (max-width: 600px) {
  .action-buttons-wrap {
    flex-direction: column;
    align-items: stretch;
  }
}

/* Bottoni */
button, .btn {
  font-family: var(--font-family);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--rounded-default);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-unit-sm);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: #8c3600; /* Scurito del 10% */
}

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

.btn-secondary:hover {
  background-color: #2c2d2e;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover {
  background-color: var(--color-surface-container-low);
  border-color: var(--color-outline-variant);
}

/* Moduli di Input */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-unit-sm);
}

.form-group label {
  color: var(--color-on-surface-variant);
}

.form-input {
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-border);
  border-radius: var(--rounded-default);
  padding: 12px 16px;
  font-family: var(--font-family);
  font-size: 15px;
  color: var(--color-on-surface);
  outline: none;
  transition: all 0.2s ease;
}

.form-input:focus {
  border-color: var(--color-input-focus);
  box-shadow: 0 0 0 2px rgba(45, 45, 45, 0.2);
}

.chip {
  background-color: #f0f0f0;
  color: var(--color-on-surface-variant);
  border-radius: var(--rounded-sm);
  padding: 4px 8px;
  display: inline-block;
}

/* Sezione Info */
.info-section {
  background-color: var(--color-surface-container-low);
  padding: var(--spacing-unit-xxl) 0;
}

.info-card {
  background-color: var(--color-surface-container-lowest);
  padding: var(--spacing-unit-lg);
  border-radius: var(--rounded-default);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-level-1);
  text-align: center;
}

.info-icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
  border-radius: var(--rounded-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-unit-md);
  font-weight: 700;
}

/* Wizard / Flussi Interattivi */
.flow-card {
  background-color: var(--color-surface-container-lowest);
  border-radius: var(--rounded-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-level-1);
  padding: var(--spacing-unit-xl);
}

.flow-selector {
  display: flex;
  gap: var(--spacing-unit-md);
  margin-bottom: var(--spacing-unit-lg);
}

.flow-selector button {
  flex-grow: 1;
}

/* Indicatore di Progresso */
.progress-container {
  display: flex;
  align-items: center;
  position: relative;
  margin-bottom: var(--spacing-unit-xl);
  padding: 0 var(--spacing-unit-lg);
}

.progress-bar-bg {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-surface-container-highest);
  z-index: 1;
}

.progress-bar-fill {
  position: absolute;
  left: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 2;
}

.progress-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 3;
}

.progress-node {
  width: 24px;
  height: 24px;
  border-radius: var(--rounded-full);
  background-color: var(--color-surface-container-lowest);
  border: 2px solid var(--color-surface-container-highest);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  color: var(--color-on-surface-variant);
  transition: all 0.3s ease;
}

.progress-step.active .progress-node {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  box-shadow: 0 0 0 4px rgba(162, 63, 0, 0.15);
}

.progress-step.completed .progress-node {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  color: var(--color-on-secondary);
}

.progress-label {
  margin-top: var(--spacing-unit-sm);
  color: var(--color-on-surface-variant);
  transition: color 0.3s ease;
  white-space: nowrap;
}

.progress-step.active .progress-label {
  color: var(--color-primary);
  font-weight: 600;
}

.flow-step-content {
  margin-bottom: var(--spacing-unit-lg);
  min-height: 200px;
}

.flow-actions {
  display: flex;
  justify-content: space-between;
}

/* Riepilogo Stili */
.summary-box {
  background-color: var(--color-surface-container-low);
  border: 1px solid var(--color-border);
  border-radius: var(--rounded-default);
  padding: var(--spacing-unit-md);
}

.summary-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-surface-container);
}

.summary-item:last-child {
  border-bottom: none;
}

.summary-label {
  font-weight: 600;
  color: var(--color-on-surface-variant);
}

.summary-value {
  color: var(--color-primary);
  font-weight: 700;
}

/* Footer */
footer {
  background-color: var(--color-primary);
  color: var(--color-surface-dim);
  padding: var(--spacing-unit-xl) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: var(--spacing-unit-xl);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-unit-lg);
  }
}

.footer-logo {
  color: var(--color-surface-container-lowest);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-unit-md);
}

.footer-logo span {
  color: var(--color-secondary-container);
}

.footer-col h4 {
  color: var(--color-surface-container-lowest);
  margin-bottom: var(--spacing-unit-md);
}

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

.footer-links li {
  margin-bottom: var(--spacing-unit-sm);
}

.footer-links a {
  color: var(--color-surface-dim);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-surface-container-lowest);
}

.footer-bottom {
  margin-top: var(--spacing-unit-xl);
  padding-top: var(--spacing-unit-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 14px;
}

/* ==========================================================================
   Responsive Layout Overrides & Navigation Menu Mobile
   ========================================================================== */

/* Abilita il blocco dello scorrimento del corpo quando il menu è aperto */
body.body-no-scroll {
  overflow: hidden;
}

/* Stili per la barra di navigazione desktop */
.header-nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 1;
  margin-left: var(--spacing-unit-xl);
}

.menu-toggle {
  display: none;
}

/* Tipografia Responsive */
@media (max-width: 768px) {
  .display-lg {
    font-size: 32px;
  }
  .headline-lg {
    font-size: 26px;
  }
  .headline-md {
    font-size: 20px;
  }
  .section-gap {
    margin-top: var(--spacing-unit-xl);
    margin-bottom: var(--spacing-unit-xl);
  }
}

/* Griglia e Layout */
@media (max-width: 991px) {
  /* Impedisce il restringimento eccessivo delle colonne all'interno della flow card */
  .flow-card .grid-12 > .col-8,
  .flow-card .grid-12 > .col-7,
  .flow-card .grid-12 > .col-5,
  .flow-card .grid-12 > .col-4 {
    grid-column: span 12;
  }
}

@media (max-width: 900px) {
  /* Hamburger Menu Button */
  .menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 101;
  }

  .menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .menu-toggle.is-active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .menu-toggle.is-active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.is-active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  /* Mobile Navigation Drawer */
  .header-nav-wrapper {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-surface-container-lowest);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: var(--spacing-unit-xl) var(--spacing-unit-lg);
    gap: var(--spacing-unit-xl);
    margin-left: 0;
    z-index: 99;
    border-top: 1px solid var(--color-border);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    height: calc(100vh - 80px);
    overflow-y: auto;
  }

  .header-nav-wrapper.nav-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .header-nav-wrapper nav {
    width: 100%;
  }

  .nav-links {
    flex-direction: column;
    gap: var(--spacing-unit-lg);
    align-items: center;
  }

  .nav-links a {
    font-size: 18px;
    display: block;
    padding: var(--spacing-unit-sm) 0;
  }

  .header-nav-wrapper .header-actions {
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-unit-md);
    margin-top: var(--spacing-unit-lg);
  }

  .header-nav-wrapper .header-actions button {
    width: 100%;
    padding: 14px 24px;
  }
}

/* Modulo Guidato (Wizard Flow) */
.progress-mobile-label {
  display: none;
  text-align: center;
  color: var(--color-secondary);
  font-weight: 600;
  margin-top: -8px;
  margin-bottom: var(--spacing-unit-lg);
  padding: 0 var(--spacing-unit-sm);
}

@media (max-width: 640px) {
  .flow-card {
    padding: var(--spacing-unit-md);
  }

  .progress-step .progress-label {
    display: none;
  }

  .progress-mobile-label {
    display: block;
  }

  .progress-container {
    margin-bottom: var(--spacing-unit-md);
  }
}

@media (max-width: 600px) {
  .flow-selector {
    flex-direction: column;
    gap: var(--spacing-unit-sm);
  }
}

@media (max-width: 576px) {
  .hero-content > div[style*="display: flex"] {
    flex-direction: column !important;
    align-items: stretch !important;
  }
  .hero-content button {
    width: 100%;
  }
}

/* Riepilogo e Prevenzione Overflow */
@media (max-width: 600px) {
  .logo {
    font-size: 14px !important;
    gap: var(--spacing-unit-xs);
  }

  .summary-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 10px 0;
  }
  
  .summary-value {
    word-break: break-all;
    text-align: left;
    width: 100%;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: var(--spacing-unit-md);
    padding-right: var(--spacing-unit-md);
  }
}