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

:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-text: #1e293b;
  --color-muted: #64748b;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-border: #e2e8f0;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --radius: 8px;
  --max-width: 1100px;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
header {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  margin-left: 1.5rem;
  font-size: 0.95rem;
}

nav a:hover { color: var(--color-primary); }

/* Hero */
.hero {
  padding: 5rem 0;
  background: var(--color-bg-alt);
  text-align: center;
}

.hero h1 {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.125rem;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.btn-cta {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  padding: 0.75rem 2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.2s;
}

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

/* Blog / Cards */
.section { padding: 4rem 0; }

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--color-bg);
}

.card h2 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.card p  { color: var(--color-muted); font-size: 0.9rem; }
.card a  { color: var(--color-primary); text-decoration: none; font-weight: 600; font-size: 0.9rem; }

/* Footer */
footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  color: var(--color-muted);
  font-size: 0.875rem;
  text-align: center;
}

/* Obrigado / páginas simples */
.page-center {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1.5rem;
}

.page-center h1 { font-size: 2rem; margin-bottom: 1rem; }
.page-center p  { color: var(--color-muted); margin-bottom: 1.5rem; }