:root {
  --tn-bg: #f3f4f6;
  --tn-surface: #ffffff;
  --tn-border: #e3e5e8;
  --tn-text: #24272b;
  --tn-muted: #6b7280;
  --tn-accent: #3a3f45;
}

html { scroll-padding-top: 80px; }

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--tn-bg);
  color: var(--tn-text);
}

/* Navegação */
.navbar { border-color: var(--tn-border) !important; }
.navbar .nav-link { color: var(--tn-muted); font-weight: 500; }
.navbar .nav-link:hover,
.navbar .nav-link.active { color: var(--tn-text); }

/* Etiqueta de secção */
.eyebrow {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--tn-muted);
}

/* Hero */
.hero {
  padding: 160px 0 110px;
  background:
    radial-gradient(circle at 85% 20%, #ffffff 0, transparent 45%),
    var(--tn-bg);
}
.hero h1 { letter-spacing: -.02em; }

.hero-card {
  background: var(--tn-surface);
  border: 1px solid var(--tn-border);
  border-radius: 1.25rem;
  padding: 1rem;
  box-shadow: 0 20px 40px -24px rgba(0, 0, 0, .18);
}
.hero-card-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-radius: .75rem;
  font-weight: 500;
  transition: background .2s;
}
.hero-card-row + .hero-card-row { border-top: 1px solid var(--tn-border); }
.hero-card-row:hover { background: var(--tn-bg); }
.hero-card-row i {
  font-size: 1.25rem;
  width: 2.5rem; height: 2.5rem;
  display: grid; place-items: center;
  background: var(--tn-bg);
  border-radius: .6rem;
  color: var(--tn-accent);
}

/* Secções */
.section { padding: 90px 0; }
.section-head { max-width: 560px; margin-bottom: 3rem; }
.section-head h2 { margin-top: .5rem; }

/* Serviços */
.feature {
  height: 100%;
  padding: 2rem 1.5rem;
  background: var(--tn-bg);
  border: 1px solid transparent;
  border-radius: 1rem;
  transition: transform .2s, border-color .2s, background .2s;
}
.feature:hover {
  transform: translateY(-4px);
  background: var(--tn-surface);
  border-color: var(--tn-border);
  box-shadow: 0 16px 32px -24px rgba(0, 0, 0, .25);
}
.feature-icon {
  width: 3rem; height: 3rem;
  display: grid; place-items: center;
  margin-bottom: 1.25rem;
  font-size: 1.4rem;
  color: #fff;
  background: var(--tn-accent);
  border-radius: .75rem;
}
.feature p { color: var(--tn-muted); margin-bottom: 0; }

/* Fornecimento */
.supply {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
  padding: 2rem 1rem;
  background: var(--tn-surface);
  border: 1px solid var(--tn-border);
  border-radius: 1rem;
  font-weight: 600;
  text-align: center;
  transition: transform .2s;
}
.supply:hover { transform: translateY(-4px); }
.supply i { font-size: 2rem; color: var(--tn-accent); }

/* Contactos */
.contact-box {
  padding: 3rem;
  background: var(--tn-bg);
  border-radius: 1.5rem;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  background: var(--tn-surface);
  border: 1px solid var(--tn-border);
  border-radius: 1rem;
  color: var(--tn-text);
  text-decoration: none;
  transition: border-color .2s, transform .2s;
}
.contact-item + .contact-item { margin-top: .75rem; }
.contact-item:hover { border-color: var(--tn-accent); transform: translateX(4px); color: var(--tn-text); }
.contact-item i {
  font-size: 1.25rem;
  width: 2.75rem; height: 2.75rem;
  display: grid; place-items: center;
  background: var(--tn-bg);
  border-radius: .75rem;
}
.contact-item small { display: block; color: var(--tn-muted); }
.contact-item strong { word-break: break-word; }

footer { background: var(--tn-surface); }

@media (max-width: 575.98px) {
  .hero { padding: 120px 0 70px; }
  .section { padding: 64px 0; }
  .contact-box { padding: 1.75rem 1.25rem; }
}