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

* {
  margin: 0;
}

html {
  color-scheme: dark;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--color-text-primary);
  font-family: var(--font-family-base);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--line-height-body);
  min-height: 100svh;
  overflow-x: hidden;
}

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

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
  padding: 0;
}

h1, h2, h3, h4 {
  font-weight: var(--weight-semibold);
  line-height: var(--line-height-heading);
  letter-spacing: -0.015em;
  text-wrap: balance;
}

h1 {
  font-size: var(--text-h1);
  font-weight: var(--weight-extrabold);
  letter-spacing: -0.025em;
}

h2 {
  font-size: var(--text-h2);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
}

h3 {
  font-size: var(--text-h3);
  font-weight: var(--weight-semibold);
}

p {
  color: var(--color-text-secondary);
  max-width: 62ch;
}

::selection {
  background: var(--brand-violet);
  color: var(--color-text-primary);
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding-inline);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -100%;
  left: var(--space-4);
  z-index: 1000;
  background: var(--color-surface);
  color: var(--color-text-primary);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-btn-secondary);
  border: 1px solid var(--color-border-strong);
  transition: top var(--transition-base);
}

.skip-link:focus {
  top: var(--space-4);
}

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section-alt {
  background-color: var(--color-surface);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 64px 64px;
}

/* Seção clara (2026-08-17) — mescla dark/white pedida pelo owner: o site
   estava "muito dark"; alterna seções escuras com seções claras usando a
   paleta clara já reservada em specs/design.md ("Paleta clara"), agora
   promovida a uso ativo (deixa de ser só reserva futura). Sobrescreve os
   tokens de cor — todos os componentes (card, badge, botões, texto) já usam
   var(...), então herdam o tema claro automaticamente dentro do escopo. */
.section-light {
  --color-bg: #F7F8FC;
  --color-surface: #FFFFFF;
  --color-card-bg: #FFFFFF;
  --color-text-primary: #0B0F1A;
  --color-text-secondary: #5B6478;
  --color-border: rgba(11, 15, 26, 0.10);
  --color-border-strong: rgba(11, 15, 26, 0.16);
  --color-border-hover: rgba(11, 15, 26, 0.24);
  --color-surface-hover: rgba(11, 15, 26, 0.05);
  --brand-cyan: #0A7EA6;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
}

.section-light .card {
  box-shadow: 0 2px 16px -6px rgba(11, 15, 26, 0.10);
}

.section-light .card:hover {
  box-shadow: 0 16px 32px -16px rgba(11, 63, 224, 0.18);
}

.section-light .badge {
  border-color: rgba(11, 15, 26, 0.12);
}