/* ============================================
   MCF Safety Belts - Design System & Styles
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

a {
  text-decoration: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

/* --- Custom Properties --- */
:root {
  /* Colori */
  --color-primary: #C8102E;
  --color-primary-dark: #A00D24;
  --color-primary-light: #E8354D;
  --color-dark: #1A1A1A;
  --color-dark-lighter: #2D2D2D;
  --color-white: #FFFFFF;
  --color-gray-50: #F5F5F5;
  --color-gray-100: #E0E0E0;
  --color-gray-300: #999999;
  --color-gray-600: #666666;
  --color-gray-800: #333333;

  /* Tipografia */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2.25rem;
  --font-size-4xl: 3rem;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Layout */
  --container-max: 1280px;
  --container-padding: 24px;
  --border-radius: 4px;
  --border-radius-lg: 8px;

  /* Transizioni */
  --transition: 0.2s ease-in-out;
  --transition-slow: 0.4s ease-in-out;

  /* Shadow */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* --- Base Styles --- */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-dark);
  background-color: var(--color-white);
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-dark);
}

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); }

p {
  line-height: 1.7;
  color: var(--color-gray-600);
}

p + p {
  margin-top: var(--space-md);
}

strong {
  font-weight: 700;
  color: var(--color-dark);
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

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

.section-label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  max-width: 640px;
}

.section-header {
  margin-bottom: var(--space-3xl);
}

.section-header.centered {
  text-align: center;
}

.section-header.centered .section-subtitle {
  margin-inline: auto;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 32px;
  font-size: var(--font-size-base);
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

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

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

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

.btn-secondary:hover {
  background-color: var(--color-white);
  color: var(--color-dark);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-dark);
  border-color: var(--color-gray-100);
}

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

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

.btn-white:hover {
  background-color: var(--color-gray-50);
}

/* --- Sections --- */
.section {
  padding-block: var(--space-4xl);
}

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

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--color-white);
}

.section-dark p {
  color: rgba(255, 255, 255, 0.7);
}

.section-dark .section-label {
  color: var(--color-primary-light);
}

.section-gray {
  background-color: var(--color-gray-50);
}

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

.section-primary h2,
.section-primary h3,
.section-primary p {
  color: var(--color-white);
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding-block: var(--space-md);
  transition: all var(--transition);
  background-color: transparent;
}

.site-header.scrolled {
  background-color: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding-block: var(--space-sm);
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.logo img {
  height: 40px;
  width: auto;
}

/* Navigation */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-item > a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-white);
  border-radius: var(--border-radius);
  transition: all var(--transition);
}

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

/* Dropdown */
.has-dropdown {
  position: relative;
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
}

.has-dropdown:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-dark);
  border-radius: var(--border-radius);
  transition: all var(--transition);
}

.dropdown a:hover {
  background-color: var(--color-gray-50);
  color: var(--color-primary);
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.lang-switch {
  display: flex;
  gap: 2px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius);
  padding: 2px;
}

.lang-switch a {
  padding: 4px 10px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.6);
  border-radius: 3px;
  transition: all var(--transition);
}

.lang-switch a.active {
  background-color: var(--color-white);
  color: var(--color-dark);
}

.header-actions .btn {
  padding: 8px 20px;
  font-size: var(--font-size-sm);
}

/* Hamburger menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 85vh;
  padding-top: 80px;
  background-color: var(--color-dark);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--space-lg);
  line-height: 1.1;
}

.hero p {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-xl);
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Hero compatto (pagine interne) */
.hero-compact {
  padding-top: 80px;
  padding-bottom: var(--space-3xl);
  background-color: var(--color-dark);
  text-align: center;
}

.hero-compact h1 {
  font-size: var(--font-size-3xl);
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.5);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--color-white);
}

.breadcrumb .separator {
  color: rgba(255, 255, 255, 0.3);
}

.breadcrumb .current {
  color: var(--color-primary-light);
}

/* ============================================
   KPI / STATS
   ============================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.stat-box {
  text-align: center;
  padding: var(--space-xl);
}

.stat-number {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   SECTORS GRID
   ============================================ */
.sectors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.sector-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-xl) var(--space-md);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--border-radius-lg);
  text-align: center;
  transition: all var(--transition);
  cursor: default;
}

.sector-card:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.sector-card:hover .sector-icon {
  color: var(--color-white);
}

.sector-card:hover .sector-name {
  color: var(--color-white);
}

.sector-icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
  transition: color var(--transition);
}

.sector-icon svg {
  width: 100%;
  height: 100%;
}

.sector-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-dark);
  transition: color var(--transition);
}

/* ============================================
   PRODUCTS GRID
   ============================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.product-card {
  position: relative;
  border: 1px solid var(--color-gray-100);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.product-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.product-card-img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-gray-50);
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.product-card-body {
  padding: var(--space-lg);
}

.product-card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.product-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition);
}

.product-card-link:hover {
  gap: var(--space-sm);
}

.product-card-link svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   CERTIFICATIONS
   ============================================ */
.certs-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
  flex-wrap: wrap;
  margin-top: var(--space-2xl);
}

.cert-logo {
  height: 60px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.7;
  transition: opacity var(--transition);
}

.cert-logo:hover {
  opacity: 1;
}

/* Cert cards (pagina certificazioni) */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.cert-card {
  padding: var(--space-xl);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--border-radius-lg);
  text-align: center;
  transition: all var(--transition);
}

.cert-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.cert-card img {
  height: 80px;
  width: auto;
  margin-inline: auto;
  margin-bottom: var(--space-md);
}

.cert-card h4 {
  margin-bottom: var(--space-sm);
}

.cert-card .btn {
  margin-top: var(--space-md);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  padding-block: var(--space-3xl);
  text-align: center;
}

.cta-section h2 {
  margin-bottom: var(--space-lg);
}

/* ============================================
   CONTENT PAGES
   ============================================ */
.page-content {
  padding-block: var(--space-4xl);
}

.page-content p {
  margin-bottom: var(--space-md);
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.content-grid.reverse {
  direction: rtl;
}

.content-grid.reverse > * {
  direction: ltr;
}

.content-img {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.content-img img {
  width: 100%;
  height: auto;
}

/* Services list */
.services-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm) var(--space-xl);
}

.services-list li {
  position: relative;
  padding-left: var(--space-lg);
  padding-block: var(--space-sm);
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  line-height: 1.6;
}

.services-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  background-color: var(--color-primary);
  border-radius: 50%;
}

/* Photo grid (laboratorio) */
.photo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.photo-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--border-radius-lg);
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.contact-info h3 {
  margin-bottom: var(--space-lg);
}

.contact-detail {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-detail svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--color-primary);
}

.contact-detail p {
  color: var(--color-dark);
}

.contact-detail a {
  color: var(--color-primary);
  transition: color var(--transition);
}

.contact-detail a:hover {
  color: var(--color-primary-dark);
}

.map-container {
  margin-top: var(--space-xl);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-gray-100);
}

.map-container iframe {
  width: 100%;
  height: 300px;
  border: 0;
}

/* Contact form */
.contact-form h3 {
  margin-bottom: var(--space-lg);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-dark);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px var(--space-md);
  font-size: var(--font-size-base);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--border-radius);
  transition: border-color var(--transition);
  background-color: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.1);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-primary);
}

.form-checkbox label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding-top: var(--space-4xl);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-3xl);
}

.footer-col h4 {
  color: var(--color-white);
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

.footer-col p {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.8;
}

.footer-col ul li {
  margin-bottom: var(--space-sm);
}

.footer-col ul a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}

.footer-col ul a:hover {
  color: var(--color-white);
}

.footer-logo {
  height: 36px;
  width: auto;
  margin-bottom: var(--space-md);
}

.social-links {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  transition: background-color var(--transition);
}

.social-links a:hover {
  background-color: var(--color-primary);
}

.social-links a svg {
  width: 18px;
  height: 18px;
}

.footer-certs {
  padding-block: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-certs .certs-row {
  gap: var(--space-xl);
}

.footer-certs .cert-logo {
  height: 40px;
}

.footer-bottom {
  padding-block: var(--space-lg);
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
}

.footer-legal {
  display: flex;
  gap: var(--space-md);
}

.footer-legal a {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
  transition: color var(--transition);
}

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

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}