/* ============================================
   GBT SAS — Stylesheet
   Stile moderno e pulito
   ============================================ */

:root {
  --color-primary: #000000;
  --color-primary-dark: #000000;
  --color-accent: #404040;
  --color-accent-dark: #1a1a1a;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f5;
  --color-text: #000000;
  --color-text-muted: #6b6b6b;
  --color-border: #e5e5e5;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  --font-serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --max-width: 1200px;
  --radius: 4px;
  --transition: 0.25s ease;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.10);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); margin-bottom: 1rem; }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 1rem; }
h3 { font-size: 1.4rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.15rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; color: var(--color-text-muted); }
p.lead { font-size: 1.2rem; color: var(--color-text); line-height: 1.5; }

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

/* ============================================
   Header / Navigation
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.nav-logo img {
  height: 50px;
  width: auto;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 32px;
  align-items: center;
}

.nav-menu a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--color-accent);
}

.nav-menu a.active::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
}

.lang-switch {
  display: flex;
  gap: 8px;
  font-size: 0.85rem;
  margin-left: 16px;
  padding-left: 16px;
  border-left: 1px solid var(--color-border);
}

.lang-switch a {
  color: var(--color-text-muted);
  font-weight: 500;
}

.lang-switch a.active { color: var(--color-primary); font-weight: 700; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  margin: 5px 0;
  transition: var(--transition);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-block;
  padding: 14px 30px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
  letter-spacing: 0.02em;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

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

/* ============================================
   Hero
   ============================================ */
.hero {
  padding: 140px 0 120px;
  background-color: #000;
  background-image:
    linear-gradient(90deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.65) 45%, rgba(0,0,0,0.25) 100%),
    url('../img/cucina-mareno.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: #ffffff;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

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

.hero h1 {
  margin-bottom: 1.5rem;
  color: #ffffff;
}

.hero .eyebrow {
  color: rgba(255, 255, 255, 0.85);
}

.hero p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero .btn-outline {
  color: #ffffff;
  border-color: #ffffff;
}

.hero .btn-outline:hover {
  background: #ffffff;
  color: #000000;
}

.hero .btn-primary {
  background: #ffffff;
  color: #000000;
}

.hero .btn-primary:hover {
  background: var(--color-bg-alt);
  color: #000000;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================
   Sections
   ============================================ */
section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.section-header p {
  font-size: 1.05rem;
}

/* ============================================
   Features / Services Grid
   ============================================ */
.grid {
  display: grid;
  gap: 32px;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: white;
  padding: 36px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-accent);
}

.card-icon svg {
  width: 28px;
  height: 28px;
}

.card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.card p {
  font-size: 0.95rem;
  margin: 0;
}

/* ============================================
   Stats
   ============================================ */
.stats {
  background: #000000;
  color: white;
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ============================================
   Two-column layout
   ============================================ */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.two-col-image {
  background: #000000;
  border-radius: var(--radius);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.two-col-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.08) 0%, transparent 60%);
}

.two-col-image svg {
  width: 120px;
  height: 120px;
  position: relative;
  z-index: 1;
}

.two-col-photo {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.two-col-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  display: block;
}

/* ============================================
   Founder
   ============================================ */
.founder {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 60px;
  align-items: center;
  max-width: 1000px;
  margin: 0 auto;
}

.founder-photo {
  position: relative;
}

.founder-photo img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  filter: grayscale(100%);
  display: block;
}

.founder-bio h2 {
  margin-bottom: 1rem;
}

.founder-bio .lead {
  margin-bottom: 1.25rem;
}

@media (max-width: 720px) {
  .founder {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: left;
  }
  .founder-photo {
    max-width: 260px;
  }
}

/* ============================================
   Partners
   ============================================ */
.partners {
  background: var(--color-bg-alt);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 32px;
  align-items: center;
}

.partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: white;
  border-radius: var(--radius);
  height: 100px;
  transition: var(--transition);
}

.partner-logo:hover {
  box-shadow: var(--shadow-md);
}

.partner-logo img {
  max-height: 50px;
  max-width: 100%;
  width: auto;
  filter: grayscale(100%);
  opacity: 0.85;
  transition: var(--transition);
}

.partner-logo:hover img {
  opacity: 1;
}

/* ============================================
   Testimonial
   ============================================ */
.testimonial {
  padding: 100px 0;
  background: #ffffff;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.testimonial-inner {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.testimonial-mark {
  font-family: var(--font-serif);
  font-size: 6rem;
  line-height: 0.8;
  color: var(--color-text);
  display: block;
  margin-bottom: 16px;
}

.testimonial blockquote {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  line-height: 1.4;
  color: var(--color-text);
  font-weight: 500;
  margin-bottom: 32px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.testimonial-author .name {
  font-weight: 600;
  color: var(--color-text);
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.testimonial-author .role {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ============================================
   CTA Banner
   ============================================ */
.cta-banner {
  background: #000000;
  color: white;
  text-align: center;
  padding: 80px 24px;
}

.cta-banner h2 {
  color: white;
  margin-bottom: 1rem;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* ============================================
   Page header (interno)
   ============================================ */
.page-header {
  background: var(--color-bg-alt);
  padding: 80px 0 60px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.page-header .eyebrow { display: block; }

.page-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
}

/* ============================================
   Service detail
   ============================================ */
.service-block {
  padding: 60px 0;
  border-bottom: 1px solid var(--color-border);
}

.service-block:last-child { border-bottom: none; }

.service-block .two-col {
  gap: 80px;
}

.service-list {
  list-style: none;
  margin-top: 20px;
}

.service-list li {
  padding: 10px 0 10px 28px;
  position: relative;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.service-list li:last-child { border-bottom: none; }

.service-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 16px;
  height: 2px;
  background: var(--color-accent);
}

/* ============================================
   Contact
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info {
  background: var(--color-bg-alt);
  padding: 40px;
  border-radius: var(--radius);
}

.contact-info h3 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text);
  font-family: var(--font-sans);
  margin-bottom: 8px;
  margin-top: 28px;
}

.contact-info h3:first-of-type { margin-top: 0; }

.contact-info p, .contact-info a {
  font-size: 1.05rem;
  color: var(--color-text);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: border-color var(--transition);
  background: white;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
}

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

/* ============================================
   Map
   ============================================ */
.map-section {
  padding: 0;
}

.map-section iframe {
  width: 100%;
  height: 450px;
  border: 0;
  display: block;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: #000000;
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 24px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand img {
  height: 50px;
  margin-bottom: 16px;
  filter: invert(1);
}

.footer-brand p { color: rgba(255, 255, 255, 0.6); font-size: 0.9rem; }

.footer-col h4 {
  color: white;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

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

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .two-col,
  .two-col[style*="grid-template-columns"] { grid-template-columns: 1fr !important; gap: 40px; }
  .two-col.photo-below-mobile .two-col-photo,
  .two-col.photo-below-mobile .two-col-image { order: 2; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .lang-switch { margin-left: 0; padding-left: 0; border-left: none; border-top: 1px solid var(--color-border); padding-top: 16px; }
  section { padding: 60px 0; }
  .hero { padding: 60px 0 50px; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
}