/* Bru.Isa Consulting — palette dal logo */
:root {
  --color-blue: #2b5aa0;
  --color-blue-dark: #1e4278;
  --color-green: #8bc53f;
  --color-orange: #f47920;
  --color-yellow: #fbb040;
  --color-black: #0d0d0d;
  --color-gray-900: #1a1a1a;
  --color-gray-700: #4a4a4a;
  --color-gray-500: #6b6b6b;
  --color-gray-200: #e8e8e8;
  --color-gray-100: #f5f6f8;
  --color-white: #ffffff;

  --font-sans: "Montserrat", system-ui, sans-serif;
  --font-serif: "Libre Baskerville", Georgia, serif;

  --container-max: 72rem;
  --header-height: 4.5rem;
  --radius: 0.5rem;
  --shadow: 0 4px 24px rgba(43, 90, 160, 0.08);
  --transition: 0.2s ease;
}

*,
*::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-900);
  background: var(--color-white);
}

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

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

a:hover {
  color: var(--color-blue-dark);
}

:focus-visible {
  outline: 2px solid var(--color-orange);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* Skip link accessibilità */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--color-blue);
  color: var(--color-white);
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-gray-100);
  border-bottom: 3px solid var(--color-blue);
  box-shadow: 0 1px 0 var(--color-gray-200);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 1rem;
}

.site-header__brand img {
  max-height: 3.25rem;
  width: auto;
  height: auto;
}

/* Reset stile predefinito di <address> nei blocchi contatto */
.office-block__address {
  font-style: normal;
}

.site-nav__list {
  display: flex;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  color: var(--color-blue-dark);
  padding: 0.5rem 0;
}

.site-nav a:hover {
  color: var(--color-orange);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 1.5rem;
  height: 2px;
  margin-inline: auto;
  background: var(--color-blue-dark);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Bottoni */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.625rem 1.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

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

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

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

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

.btn--full {
  width: 100%;
}

/* Hero */
.hero {
  position: relative;
  padding: 3rem 0 4rem;
  background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-white) 55%);
  overflow: hidden;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 40rem;
}

.hero__eyebrow {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.125rem;
  color: var(--color-blue);
  margin: 0 0 0.5rem;
}

.hero__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-blue-dark);
  margin: 0 0 1rem;
}

.hero__lead {
  font-size: 1.0625rem;
  color: var(--color-gray-700);
  margin: 0 0 1.75rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.hero__quick-contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.hero__quick-contact a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--color-gray-700);
}

.hero__quick-contact a:hover {
  color: var(--color-blue);
}

.hero__accent {
  position: absolute;
  top: -20%;
  right: -10%;
  width: min(50vw, 22rem);
  height: min(50vw, 22rem);
  background: conic-gradient(
    from 200deg,
    var(--color-orange) 0deg 90deg,
    var(--color-green) 90deg 180deg,
    var(--color-blue) 180deg 270deg,
    var(--color-yellow) 270deg 360deg
  );
  opacity: 0.12;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  pointer-events: none;
}

/* Sezioni comuni */
.section {
  padding: 4rem 0;
}

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

.section--services {
  background: var(--color-gray-100);
}

.section--contact {
  background: var(--color-gray-900);
  color: var(--color-gray-200);
}

.section__header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section__header--light .section__title {
  color: var(--color-white);
}

.section__header--light .section__subtitle {
  color: var(--color-gray-200);
}

.section__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-blue-dark);
  margin: 0 0 0.35rem;
}

.section__subtitle {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.0625rem;
  color: var(--color-gray-500);
  margin: 0;
}

.about__grid {
  display: grid;
  gap: 1.25rem;
  max-width: 48rem;
  margin-inline: auto;
}

.about__grid p {
  margin: 0;
  color: var(--color-gray-700);
}

/* Griglia servizi */
.services-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--color-blue);
}

.service-card--accent-blue {
  border-left-color: var(--color-blue);
}

.service-card--accent-green {
  border-left-color: var(--color-green);
}

.service-card--accent-orange {
  border-left-color: var(--color-orange);
}

.service-card--accent-yellow {
  border-left-color: var(--color-yellow);
}

.service-card__icon {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--color-blue);
  margin-bottom: 1rem;
}

.service-card--accent-green .service-card__icon {
  color: var(--color-green);
}

.service-card--accent-orange .service-card__icon {
  color: var(--color-orange);
}

.service-card--accent-yellow .service-card__icon {
  color: var(--color-yellow);
}

.service-card__icon svg {
  width: 100%;
  height: 100%;
}

.service-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-blue-dark);
  margin: 0 0 0.5rem;
}

.service-card__text {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-gray-700);
}

/* Contatti */
.contact-offices {
  display: grid;
  gap: 1.5rem;
  max-width: 52rem;
  margin-inline: auto;
}

.office-block {
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.office-block__title {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-yellow);
  margin: 0 0 1rem;
}

.office-block__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.office-block__list li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.9375rem;
}

.office-block__list .icon {
  margin-top: 0.15rem;
  color: var(--color-green);
}

.section--contact a {
  color: var(--color-yellow);
}

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

/* Footer */
.site-footer {
  background: var(--color-black);
  color: var(--color-gray-200);
  padding: 2rem 0;
  font-size: 0.875rem;
}

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

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.site-footer__offices {
  display: grid;
  gap: 1.25rem;
}

.site-footer__label {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.75rem;
  color: var(--color-green);
  margin: 0 0 0.35rem;
}

.site-footer__offices p {
  margin: 0;
  line-height: 1.5;
}

.site-footer__copy {
  margin: 0;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-gray-500);
}

/* Responsive */
@media (min-width: 40rem) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__quick-contact {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1.5rem;
  }

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

@media (min-width: 64rem) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 47.99rem) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 2px solid var(--color-blue);
    box-shadow: var(--shadow);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-nav.is-open {
    max-height: 16rem;
  }

  .site-nav__list {
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 1.25rem 1.25rem;
  }

  .site-nav__list a {
    display: block;
    padding: 0.85rem 0;
    min-height: 2.75rem;
  }

  .site-header__inner {
    position: relative;
  }
}

@media (min-width: 48rem) {
  .site-footer__offices {
    grid-template-columns: repeat(2, 1fr);
  }
}