/* ============================================================
   3G GEO — Precision Engineering Design System
   Tema Bootstrap 5 che replica il design system del template Stitch.
   Le variabili --bs-* sono sovrascritte a monte, così i componenti
   Bootstrap ereditano il tema senza riscrivere ogni classe.
   ============================================================ */

:root {
  /* Palette */
  --tg-primary: #00081e;
  --tg-primary-container: #0a1f44;
  --tg-on-primary: #ffffff;
  --tg-secondary: #7f5600;
  --tg-secondary-container: #ffb215;
  --tg-on-secondary-container: #6b4800;
  --tg-alert-orange: #ff6b00;
  --tg-blueprint-blue: #bed2f5;
  --tg-cad-grey: #232323;

  --tg-surface: #f8f9fa;
  --tg-surface-lowest: #ffffff;
  --tg-surface-low: #f3f4f5;
  --tg-surface-container: #edeeef;
  --tg-surface-variant: #e1e3e4;
  --tg-surface-stroke: #e1e4e8;
  --tg-on-surface: #191c1d;
  --tg-on-surface-variant: #44464e;
  --tg-outline: #75777f;
  --tg-outline-variant: #c5c6cf;
  --tg-error: #ba1a1a;

  /* Tipografia */
  --tg-font-headline: "Space Grotesk", system-ui, sans-serif;
  --tg-font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --tg-font-mono: "JetBrains Mono", ui-monospace, "Cascadia Code", monospace;

  /* Ritmo spaziale su griglia 4px, come da design system */
  --tg-gutter: 24px;
  --tg-margin-desktop: 64px;
  --tg-margin-mobile: 16px;

  /* Override Bootstrap */
  --bs-primary: var(--tg-primary);
  --bs-primary-rgb: 0, 8, 30;
  --bs-body-bg: var(--tg-surface);
  --bs-body-color: var(--tg-on-surface);
  --bs-body-font-family: var(--tg-font-body);
  --bs-border-color: var(--tg-surface-stroke);
  --bs-border-radius: 0.25rem;
  --bs-border-radius-sm: 0.125rem;
  --bs-border-radius-lg: 0.5rem;
  --bs-border-radius-xl: 0.75rem;
  --bs-link-color: var(--tg-primary);
  --bs-link-hover-color: var(--tg-alert-orange);
  --bs-emphasis-color: var(--tg-primary);
}

/* ---------- Base ---------- */

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--tg-surface);
  color: var(--tg-on-surface);
  font-family: var(--tg-font-body);
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--tg-secondary-container);
  color: var(--tg-on-secondary-container);
}

h1, h2, h3, h4, h5, .tg-headline {
  font-family: var(--tg-font-headline);
  color: var(--tg-primary);
  font-weight: 600;
}

h1, .tg-h1 {
  font-size: clamp(2rem, 1.4rem + 2.4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
}

h2, .tg-h2 {
  font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  line-height: 1.25;
}

h3 {
  font-size: 1.375rem;
  line-height: 1.3;
}

a {
  text-decoration: none;
}

p {
  color: var(--tg-on-surface-variant);
}

/* Contenitore da 1200px con margini generosi, come nel design system */
.tg-container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--tg-margin-mobile);
}

@media (min-width: 992px) {
  .tg-container {
    padding-inline: var(--tg-margin-desktop);
  }
}

.tg-section {
  padding-block: 4rem;
}

@media (min-width: 992px) {
  .tg-section {
    padding-block: 6rem;
  }
}

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

.tg-section--dark {
  background-color: var(--tg-primary);
  color: var(--tg-on-primary);
}

.tg-section--dark h1,
.tg-section--dark h2,
.tg-section--dark h3,
.tg-section--dark h4 {
  color: var(--tg-on-primary);
}

.tg-section--dark p {
  color: rgba(255, 255, 255, 0.72);
}

.tg-section--bordered {
  border-top: 1px solid var(--tg-surface-stroke);
}

/* ---------- Elementi del linguaggio tecnico ---------- */

/* Etichetta monospaziata maiuscola: la firma visiva del design system */
.tg-label {
  font-family: var(--tg-font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tg-label--accent {
  color: var(--tg-secondary);
}

.tg-data {
  font-family: var(--tg-font-mono);
  font-size: 1.125rem;
  font-weight: 600;
}

/* Reticolo da tavola tecnica: sfondo delle hero */
.tg-grid-bg {
  background-size: 40px 40px;
  background-image:
    linear-gradient(to right, rgba(225, 228, 232, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(225, 228, 232, 0.6) 1px, transparent 1px);
}

.tg-grid-bg--dark {
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
}

.tg-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--tg-blueprint-blue);
  background: rgba(190, 210, 245, 0.3);
  border-radius: var(--bs-border-radius-sm);
  color: var(--tg-primary);
}

/* Chip tecnica: tag, tecnologia, stato */
.tg-chip {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  background: var(--tg-surface-container);
  color: var(--tg-primary);
  font-family: var(--tg-font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--bs-border-radius-sm);
}

.tg-chip--outline {
  background: transparent;
  border: 1px solid var(--tg-outline-variant);
}

/* Numero d'ordine grande, come nella bento grid del template */
.tg-index {
  font-family: var(--tg-font-mono);
  font-size: 3.5rem;
  font-weight: 600;
  line-height: 1;
  color: var(--tg-surface-variant);
  transition: color 0.2s ease;
}

.tg-card:hover .tg-index {
  color: var(--tg-secondary-container);
}

/* ---------- Card: bordo 1px, nessuna ombra ---------- */

/* Nessun height:100% qui: dentro una colonna stirata dal flex di Bootstrap, la percentuale si
   risolve sull'altezza dell'intera colonna e la card si allunga. Per le griglie a card di pari
   altezza si usa esplicitamente .h-100. */
.tg-card {
  background: var(--tg-surface-lowest);
  border: 1px solid var(--tg-surface-stroke);
  border-radius: var(--bs-border-radius-lg);
  padding: 2rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

a.tg-card {
  display: block;
  color: inherit;
}

a.tg-card:hover {
  border-color: var(--tg-secondary-container);
  transform: translateY(-2px);
}

.tg-card--dark {
  background: var(--tg-primary);
  border-color: var(--tg-primary);
  color: var(--tg-on-primary);
}

.tg-card--dark h2,
.tg-card--dark h3,
.tg-card--dark h4 {
  color: var(--tg-on-primary);
}

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

.tg-card--blueprint {
  background: rgba(190, 210, 245, 0.12);
}

.tg-card__icon {
  font-size: 2rem;
  line-height: 1;
  color: var(--tg-primary);
  margin-bottom: 1.25rem;
  display: block;
}

.tg-card--dark .tg-card__icon {
  color: var(--tg-secondary-container);
}

.tg-card__media {
  overflow: hidden;
  border: 1px solid var(--tg-surface-stroke);
  border-radius: var(--bs-border-radius);
  aspect-ratio: 16 / 9;
}

.tg-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.tg-card:hover .tg-card__media img {
  transform: scale(1.04);
}

/* ---------- Bottoni ---------- */

.btn {
  --bs-btn-border-radius: var(--bs-border-radius);
  font-family: var(--tg-font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 1rem 1.75rem;
  border-radius: var(--bs-border-radius);
  transition: all 0.2s ease;
}

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

.btn-tg-primary:hover,
.btn-tg-primary:focus-visible {
  background: var(--tg-primary-container);
  border-color: var(--tg-primary-container);
  color: var(--tg-on-primary);
  /* Micro-elevazione "meccanica": ombra netta, non sfumata */
  box-shadow: 2px 2px 0 rgba(0, 8, 30, 0.15);
}

.btn-tg-accent {
  background: var(--tg-secondary-container);
  color: var(--tg-on-secondary-container);
  border: 1px solid var(--tg-secondary-container);
  font-weight: 600;
}

.btn-tg-accent:hover,
.btn-tg-accent:focus-visible {
  filter: brightness(1.08);
  color: var(--tg-on-secondary-container);
  box-shadow: 2px 2px 0 rgba(0, 8, 30, 0.15);
}

.btn-tg-outline {
  background: transparent;
  color: var(--tg-secondary);
  border: 1px solid var(--tg-secondary);
}

.btn-tg-outline:hover,
.btn-tg-outline:focus-visible {
  background: rgba(127, 86, 0, 0.06);
  color: var(--tg-secondary);
}

.btn-tg-ghost-light {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-tg-ghost-light:hover,
.btn-tg-ghost-light:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.btn:focus-visible {
  outline: 2px solid var(--tg-alert-orange);
  outline-offset: 2px;
}

/* Link testuale con sottolineatura tecnica */
.tg-link {
  font-family: var(--tg-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tg-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: gap 0.2s ease, color 0.2s ease;
}

.tg-link:hover {
  color: var(--tg-alert-orange);
  gap: 0.875rem;
}

.tg-link--accent {
  color: var(--tg-secondary-container);
}

.tg-link--accent:hover {
  color: #fff;
}

/* ---------- Header ---------- */

.tg-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: var(--tg-surface);
  border-bottom: 1px solid var(--tg-surface-stroke);
}

.tg-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 80px;
}

.tg-header__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--tg-primary);
}

.tg-header__brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--bs-border-radius);
  background: var(--tg-primary);
  color: var(--tg-secondary-container);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.tg-header__brand-name {
  font-family: var(--tg-font-headline);
  font-weight: 700;
  font-size: 1.375rem;
  letter-spacing: -0.03em;
  line-height: 1.1;
  display: block;
}

.tg-header__brand-tagline {
  font-family: var(--tg-font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tg-on-surface-variant);
  display: block;
}

.tg-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.tg-nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--tg-on-surface-variant);
  padding-block: 0.5rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.tg-nav__link:hover {
  color: var(--tg-secondary);
}

.tg-nav__link.is-active {
  color: var(--tg-primary);
  font-weight: 700;
  border-bottom-color: var(--tg-secondary-container);
}

/* Menu mobile: offcanvas Bootstrap */
.tg-offcanvas .tg-nav {
  flex-direction: column;
  align-items: stretch;
  gap: 0;
}

.tg-offcanvas .tg-nav__link {
  padding: 1rem 0;
  border-bottom: 1px solid var(--tg-surface-stroke);
}

/* ---------- Hero ---------- */

.tg-hero {
  position: relative;
  overflow: hidden;
  padding-block: 3.5rem;
}

@media (min-width: 992px) {
  .tg-hero {
    padding-block: 6rem;
  }
}

.tg-hero__figure {
  position: relative;
  border: 1px solid var(--tg-surface-stroke);
  background: #fff;
  padding: 0.5rem;
  border-radius: var(--bs-border-radius-lg);
}

.tg-hero__figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--bs-border-radius-sm);
  filter: grayscale(0.15);
  transition: filter 0.5s ease;
}

.tg-hero__figure:hover img {
  filter: grayscale(0);
}

/* Targa dati sovrapposta all'immagine hero */
.tg-hero__plate {
  position: absolute;
  left: -1.25rem;
  bottom: -1.25rem;
  background: var(--tg-primary);
  color: var(--tg-on-primary);
  border-left: 4px solid var(--tg-alert-orange);
  padding: 1rem 1.25rem;
}

.tg-hero__plate .tg-label {
  color: rgba(255, 255, 255, 0.6);
}

.tg-hero__plate .tg-data {
  color: #fff;
}

@media (max-width: 991.98px) {
  .tg-hero__plate {
    display: none;
  }
}

.tg-page-hero {
  padding-block: 3rem;
  border-bottom: 1px solid var(--tg-surface-stroke);
}

@media (min-width: 992px) {
  .tg-page-hero {
    padding-block: 4.5rem;
  }
}

/* ---------- Timeline di processo ---------- */

.tg-steps {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tg-steps__item {
  position: relative;
  padding-left: 2.25rem;
  padding-bottom: 2.25rem;
  border-left: 1px solid var(--tg-surface-stroke);
}

.tg-steps__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.tg-steps__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 4px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--tg-primary);
}

.tg-steps__item:first-child::before {
  background: var(--tg-secondary-container);
}

/* ---------- Elenchi tecnici ---------- */

.tg-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tg-list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--tg-on-surface-variant);
}

.tg-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 10px;
  height: 1px;
  background: var(--tg-alert-orange);
}

.tg-list--check li::before {
  content: "\F26E"; /* bi-check-lg */
  font-family: "bootstrap-icons";
  top: -0.1em;
  width: auto;
  height: auto;
  background: none;
  color: var(--tg-secondary-container);
  font-size: 0.9375rem;
}

.tg-section--dark .tg-list li {
  color: rgba(255, 255, 255, 0.75);
}

/* ---------- Statistiche ---------- */

.tg-stat {
  border-left: 2px solid var(--tg-secondary-container);
  padding-left: 1.25rem;
}

.tg-stat__value {
  font-family: var(--tg-font-mono);
  font-size: 2rem;
  font-weight: 600;
  color: var(--tg-primary);
  line-height: 1.1;
}

.tg-section--dark .tg-stat__value {
  color: #fff;
}

.tg-stat__value--placeholder {
  font-size: 0.9375rem;
  color: var(--tg-outline);
}

/* ---------- Form ---------- */

.form-label {
  font-family: var(--tg-font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tg-on-surface-variant);
  margin-bottom: 0.375rem;
}

.form-control,
.form-select {
  border: 1px solid var(--tg-outline-variant);
  border-radius: var(--bs-border-radius);
  padding: 0.75rem 1rem;
  background: var(--tg-surface-lowest);
  color: var(--tg-on-surface);
  font-size: 0.9375rem;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--tg-primary);
  box-shadow: 0 0 0 1px var(--tg-primary);
}

.form-control::placeholder {
  color: var(--tg-outline);
}

.form-check-input:checked {
  background-color: var(--tg-primary);
  border-color: var(--tg-primary);
}

.form-check-input:focus {
  border-color: var(--tg-primary);
  box-shadow: 0 0 0 2px rgba(0, 8, 30, 0.15);
}

.field-validation-error,
.text-danger {
  color: var(--tg-error) !important;
  font-size: 0.8125rem;
  display: inline-block;
  margin-top: 0.25rem;
}

.input-validation-error {
  border-color: var(--tg-error) !important;
}

/* Honeypot: fuori dalla viewport, invisibile agli utenti ma compilato dai bot */
.tg-hp {
  position: absolute !important;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.tg-form-panel {
  background: var(--tg-surface-lowest);
  border: 1px solid var(--tg-surface-stroke);
  border-radius: var(--bs-border-radius-lg);
  padding: 1.75rem;
}

@media (min-width: 992px) {
  .tg-form-panel {
    padding: 2.5rem;
  }
}

/* ---------- Accordion FAQ ---------- */

.accordion {
  --bs-accordion-border-color: var(--tg-surface-stroke);
  --bs-accordion-border-radius: var(--bs-border-radius);
  --bs-accordion-btn-focus-box-shadow: none;
  --bs-accordion-active-bg: rgba(190, 210, 245, 0.15);
  --bs-accordion-active-color: var(--tg-primary);
  --bs-accordion-bg: var(--tg-surface-lowest);
}

.accordion-button {
  font-family: var(--tg-font-headline);
  font-weight: 600;
  color: var(--tg-primary);
  font-size: 1.0625rem;
}

.accordion-body {
  color: var(--tg-on-surface-variant);
}

/* ---------- Breadcrumb ---------- */

.tg-breadcrumb {
  font-family: var(--tg-font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tg-outline);
  margin-bottom: 1.25rem;
}

.tg-breadcrumb a {
  color: var(--tg-on-surface-variant);
}

.tg-breadcrumb a:hover {
  color: var(--tg-alert-orange);
}

.tg-breadcrumb__sep {
  margin-inline: 0.5rem;
  color: var(--tg-outline-variant);
}

/* ---------- Segnaposto ---------- */

/* Marca in modo inequivocabile i contenuti non ancora forniti dall'azienda:
   non devono poter essere scambiati per dati reali. */
.tg-placeholder {
  border: 1px dashed var(--tg-secondary-container);
  background: #fffbf0;
  border-radius: var(--bs-border-radius);
  padding: 1rem 1.25rem;
  color: var(--tg-on-secondary-container);
  font-size: 0.875rem;
}

.tg-placeholder__label {
  font-family: var(--tg-font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  display: block;
  margin-bottom: 0.25rem;
}

/* ---------- Footer ---------- */

.tg-footer {
  background: var(--tg-primary);
  color: var(--tg-on-primary);
  padding-top: 4rem;
  padding-bottom: 2rem;
}

.tg-footer h5 {
  font-family: var(--tg-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tg-secondary-container);
  margin-bottom: 1.25rem;
}

.tg-footer a {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.9375rem;
}

.tg-footer a:hover {
  color: var(--tg-secondary-container);
}

.tg-footer p,
.tg-footer address,
.tg-footer li {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9375rem;
}

.tg-footer__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.tg-footer__bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.8125rem;
}

.tg-footer__social {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--bs-border-radius-sm);
}

.tg-footer__social:hover {
  background: var(--tg-secondary-container);
  color: var(--tg-on-secondary-container);
}

/* ---------- Elenco località ---------- */

.tg-locality-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.tg-locality-grid a {
  display: block;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--tg-surface-stroke);
  border-radius: var(--bs-border-radius-sm);
  background: var(--tg-surface-lowest);
  color: var(--tg-on-surface-variant);
  font-size: 0.875rem;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.tg-locality-grid a:hover {
  border-color: var(--tg-secondary-container);
  color: var(--tg-primary);
}

/* ---------- Accessibilità ---------- */

.tg-skip-link {
  position: absolute;
  left: -9999px;
  z-index: 2000;
  background: var(--tg-primary);
  color: #fff;
  padding: 0.75rem 1.25rem;
}

.tg-skip-link:focus {
  left: 1rem;
  top: 1rem;
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--tg-alert-orange);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ---------- Stampa ---------- */

@media print {
  .tg-header,
  .tg-footer,
  .btn,
  form {
    display: none !important;
  }
}