:root {
  --color-primary: #2563EB;
  --color-primary-dark: #1E40AF;
  --color-text: #0F172A;
  --color-text-muted: #64748B;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F1F5F9;
  --color-border: #E2E8F0;

  --font-base: 'Inter', -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;

  --max-width: 1100px;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

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

a {
  color: inherit;
}

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

/* Header */

.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}

.logo {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a:not(.button) {
  text-decoration: none;
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-links a:not(.button):hover {
  color: var(--color-primary);
}

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.button-primary {
  background: var(--color-primary);
  color: #fff;
}

.button-primary:hover {
  background: var(--color-primary-dark);
}

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

.button-secondary:hover {
  background: var(--color-bg-alt);
}

/* Hero */

.hero {
  padding: 96px 0 80px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  margin: 0 0 16px;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Sections */

section {
  padding: 72px 0;
}

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

.section-title {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-title h2 {
  font-size: 1.9rem;
  margin: 0 0 12px;
}

.section-title p {
  color: var(--color-text-muted);
  margin: 0;
}

#sobre .container {
  max-width: 760px;
  text-align: center;
}

#sobre p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* Servicos */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 24px;
}

.service-card .icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: 20px;
}

.service-card h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.service-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.services-note {
  text-align: center;
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 36px auto 0;
  font-size: 0.95rem;
}

/* Contato */

#contato .container {
  text-align: center;
}

.contact-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 32px;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Responsive */

@media (max-width: 780px) {
  .nav-links {
    gap: 16px;
  }

  .nav-links a:not(.button) {
    display: none;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 64px 0 56px;
  }

  section {
    padding: 56px 0;
  }
}