/**
 * Studio Tecnico Tonini — main stylesheet (mobile-first)
 */

:root {
  --color-primary: #1e3a8a;
  --color-primary-light: #2563eb;
  --color-primary-dark: #172554;
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-400: #94a3b8;
  --color-gray-600: #475569;
  --color-gray-800: #1e293b;
  --color-white: #ffffff;
  --font-sans: "Noto Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --radius: 0.375rem;
  --radius-lg: 0.75rem;
  --shadow: 0 1px 3px rgb(15 23 42 / 0.08);
  --shadow-md: 0 4px 12px rgb(15 23 42 / 0.1);
  --max-width: 72rem;
  --header-h: 4rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-gray-800);
  background: var(--color-gray-50);
}

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

a {
  color: var(--color-primary-light);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

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

:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: fixed;
  left: var(--space-md);
  top: var(--space-md);
  width: auto;
  height: auto;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-white);
  color: var(--color-primary-dark);
  z-index: 1000;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-xl);
  }
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--color-primary-dark);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: var(--space-md);
}

.site-logo {
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.25;
  max-width: 14rem;
}

.site-logo:hover {
  color: var(--color-gray-200);
}

.site-logo span {
  display: block;
  font-weight: 400;
  font-size: 0.8rem;
  opacity: 0.9;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 1.5rem;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}

@media (min-width: 960px) {
  .nav-toggle {
    display: none;
  }
}

.site-nav {
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  background: var(--color-primary-dark);
  padding: var(--space-lg);
  transform: translateY(-120%);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
  box-shadow: var(--shadow-md);
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
}

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

@media (min-width: 960px) {
  .site-nav {
    position: static;
    inset: auto;
    padding: 0;
    transform: none;
    opacity: 1;
    visibility: visible;
    max-height: none;
    overflow: visible;
    background: transparent;
    box-shadow: none;
  }
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

@media (min-width: 960px) {
  .site-nav ul {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-xs) var(--space-lg);
  }
}

.site-nav a {
  display: block;
  padding: var(--space-sm) 0;
  color: var(--color-gray-100);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-white);
  text-decoration: underline;
}

@media (min-width: 960px) {
  .site-nav a {
    padding: var(--space-sm);
  }
}

/* Hero */
.hero {
  position: relative;
  background: var(--color-primary-dark);
  color: var(--color-white);
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  opacity: 0.35;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: relative;
  z-index: 1;
  padding: var(--space-2xl) 0 var(--space-3xl);
}

@media (min-width: 768px) {
  .hero__overlay {
    padding: var(--space-3xl) 0 4rem;
  }
}

.hero h1 {
  margin: 0 0 var(--space-md);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
  max-width: 32rem;
}

.hero__lead {
  margin: 0 0 var(--space-xl);
  font-size: 1.05rem;
  max-width: 36rem;
  opacity: 0.95;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.25rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

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

.btn--primary:hover {
  background: var(--color-gray-100);
  color: var(--color-primary-dark);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgb(255 255 255 / 0.6);
}

.btn--outline:hover {
  background: rgb(255 255 255 / 0.1);
  color: var(--color-white);
}

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

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

/* Sections */
main > section {
  padding: var(--space-2xl) 0;
}

@media (min-width: 768px) {
  main > section {
    padding: var(--space-3xl) 0;
  }
}

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

.section__title {
  margin: 0 0 var(--space-sm);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  color: var(--color-primary-dark);
}

.section__intro {
  margin: 0 0 var(--space-xl);
  max-width: 48rem;
  color: var(--color-gray-600);
}

/* Cards grid */
.cards {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .cards--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-gray-200);
}

.card h3 {
  margin: 0 0 var(--space-sm);
  font-size: 1.1rem;
  color: var(--color-primary);
}

.card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-gray-600);
}

/* Service lists */
.service-list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--color-gray-800);
}

.service-list li {
  margin-bottom: var(--space-sm);
}

.service-list li::marker {
  color: var(--color-primary-light);
}

/* Page intro (inner pages) */
.page-intro {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  padding: var(--space-2xl) 0;
}

@media (min-width: 768px) {
  .page-intro {
    padding: var(--space-3xl) 0;
  }
}

.page-intro h1 {
  margin: 0 0 var(--space-md);
  font-size: clamp(1.35rem, 3.5vw, 2rem);
  line-height: 1.2;
}

.page-intro p {
  margin: 0;
  max-width: 42rem;
  opacity: 0.95;
}

/* Certificazione banner (home) */
.cert-banner-section {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.section-divider {
  margin: 0 0 var(--space-xl);
  border: 0;
  border-top: 1px solid var(--color-gray-200);
}

.cert-banner {
  margin: 0;
  text-align: center;
}

.cert-banner a {
  display: inline-block;
  text-decoration: none;
}

.cert-banner a:focus-visible img {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 4px;
}

.cert-banner img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

/* Contact */
.contact-grid {
  display: grid;
  gap: var(--space-2xl);
}

@media (min-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.contact-form label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--space-xs);
  color: var(--color-gray-800);
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  font: inherit;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  background: var(--color-white);
  margin-bottom: var(--space-md);
}

.contact-form textarea {
  min-height: 8rem;
  resize: vertical;
}

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

.contact-form .checkbox-row input {
  margin-top: 0.35rem;
  flex-shrink: 0;
}

.contact-form .checkbox-row label {
  font-weight: 400;
  margin: 0;
}

.contact-form .form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-feedback {
  margin: 0 0 var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  line-height: 1.5;
}

.form-feedback--ok {
  background: #ecfdf5;
  border: 1px solid #6ee7b7;
  color: #065f46;
}

.form-feedback--err {
  background: #fef2f2;
  border: 1px solid #fca5a5;
  color: #991b1b;
}

.map-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  min-height: 280px;
  background: var(--color-gray-200);
}

.map-wrap iframe {
  display: block;
  width: 100%;
  height: 320px;
  border: 0;
}

.hours-box {
  margin-top: var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-gray-100);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary-light);
}

.hours-box h3 {
  margin: 0 0 var(--space-sm);
  font-size: 1rem;
  color: var(--color-primary-dark);
}

.hours-box p {
  margin: 0;
  color: var(--color-gray-600);
}

/* Privacy block */
.privacy-block {
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-gray-200);
}

.privacy-block h2 {
  font-size: 1.1rem;
  color: var(--color-primary-dark);
}

.privacy-block p {
  font-size: 0.9rem;
  color: var(--color-gray-600);
}

/* Pagina informativa privacy (testo lungo) */
.legal-page .section--alt {
  padding-bottom: var(--space-3xl);
}

.legal-content {
  max-width: 48rem;
  margin: 0 auto;
}

.legal-content h2 {
  margin: var(--space-2xl) 0 var(--space-md);
  font-size: 1.2rem;
  color: var(--color-primary-dark);
  line-height: 1.3;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content h3 {
  margin: var(--space-lg) 0 var(--space-sm);
  font-size: 1.05rem;
  color: var(--color-gray-800);
}

.legal-content p {
  margin: 0 0 var(--space-md);
  color: var(--color-gray-800);
}

.legal-content ul {
  margin: 0 0 var(--space-md);
  padding-left: 1.25rem;
  color: var(--color-gray-800);
}

.legal-content li {
  margin-bottom: var(--space-xs);
}

.legal-content address {
  font-style: normal;
  margin: 0 0 var(--space-lg);
  padding: var(--space-md);
  background: var(--color-gray-100);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-primary-light);
  line-height: 1.6;
}

.legal-content .legal-note {
  font-size: 0.9rem;
  color: var(--color-gray-600);
}

/* Footer */
.site-footer {
  background: var(--color-primary-dark);
  color: var(--color-gray-100);
  padding: var(--space-2xl) 0 var(--space-xl);
  margin-top: auto;
}

.site-footer a {
  color: var(--color-gray-100);
}

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

.footer-grid {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand strong {
  display: block;
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
  color: var(--color-white);
}

.footer-brand p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
}

.footer-zona {
  margin: var(--space-md) 0 0;
  font-size: 0.8rem;
  color: var(--color-gray-400);
  line-height: 1.45;
}

/* Breadcrumb (SEO + accessibilità) */
.breadcrumbs {
  padding: var(--space-sm) 0;
  background: var(--color-gray-100);
  border-bottom: 1px solid var(--color-gray-200);
  font-size: 0.8125rem;
  color: var(--color-gray-600);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
}

.breadcrumbs li + li::before {
  content: "/";
  margin: 0 0.5rem;
  color: var(--color-gray-400);
  text-decoration: none;
}

.breadcrumbs a {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-gray-800);
  font-weight: 600;
}

.footer-col h3 {
  margin: 0 0 var(--space-md);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gray-400);
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li {
  margin-bottom: var(--space-sm);
  font-size: 0.95rem;
}

.footer-bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgb(255 255 255 / 0.12);
  font-size: 0.85rem;
  text-align: center;
  opacity: 0.85;
}

/* Layout shell */
.layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.layout main {
  flex: 1;
}