:root {
  --primary: #2563eb;
  --primary-light: #60a5fa;
  --text-dark: #1e293b;
  --text-light: #64748b;
  --bg-main: #e8eef8;
  --bg-alt: #dde6f3;
  --border: #d0d8e8;
  --radius: 0.75rem; /* 12px */
  --shadow: 0 0.375rem 1.5rem rgba(0,0,0,0.06); /* 6px 24px */
  --success: #10b981;
  --warning: #f59e0b;
}

/* === RESET E BASE === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
}

body {
  color: var(--text-dark);
  font-family: 'Inter', system-ui, sans-serif;
  line-height: 1.6;
  background: var(--bg-main);
}

main, .content {
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
  position: relative;
}

.container {
  width: min(75rem, 94%); /* 1200px */
  margin: 0 auto;
  padding: 0 1rem;
}

/* === TIPOGRAFIA === */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }

/* === LINKS === */
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease, transform .2s ease;
}

a:hover {
  transform: translateY(-0.0625rem); /* -1px */
}

/* === BOTÕES === */
.btn-hero, .btn-plan, .btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border-radius: 0.5rem; /* 8px */
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-align: center;
}

.btn-hero--primary, .btn-plan--primary, .btn-submit {
  background: var(--primary);
  color: white;
}

.btn-hero--primary:hover, .btn-plan--primary:hover, .btn-submit:hover {
  background: #1e40af;
  transform: translateY(-0.125rem); /* -2px */
  box-shadow: 0 0.5rem 1.25rem rgba(37, 99, 235, 0.3); /* 8px 20px */
}

.btn-hero--ghost, .btn-plan--ghost {
  background: transparent;
  color: var(--primary);
  border: 0.125rem solid var(--primary); /* 2px */
}

.btn-hero--ghost:hover, .btn-plan--ghost:hover {
  background: rgba(37, 99, 235, 0.1);
  transform: translateY(-0.125rem); /* -2px */
}

/* === SECTIONS === */
.section {
  padding: 5rem 0;
  position: relative;
}

.section:nth-of-type(even) {
  background: var(--bg-alt);
}

.section-heading {
  text-align: center;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.section-sub {
  text-align: center;
  color: var(--text-light);
  font-size: 1.1rem;
  margin-bottom: 3rem;
  max-width: 37.5rem; /* 600px */
  margin-left: auto;
  margin-right: auto;
}