/* Escrito à mão, sem build. Tokens e créditos iguais aos do sat/css/src/app.css e do sat/DESIGN.md. */
:root {
  --color-bg: #ffffff;
  --color-surface: #fafafa;
  --color-hairline: #f0f0f2;
  --color-border: #e4e4e7;
  --color-border-strong: #8a8a93;
  --color-text: #18181b;
  --color-text-2: #3f3f46;
  --color-text-muted: #52525b;
  --color-ink: #18181b;
  --font-sans: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  --weight-medium: 500;
  --weight-semibold: 600;
  --radius-lg: 12px;
  --dur-fast: 120ms;
  --ease: cubic-bezier(0.2, 0, 0, 1);
  --content-max: 800px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 24px;
}

h1,
h2,
p,
ul {
  margin: 0;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-ink);
  outline-offset: 2px;
}

.wrap {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: 16px;
}

main {
  flex: 1;
  padding-block: 40px;
}

h1 {
  font-size: 32px;
  font-weight: var(--weight-semibold);
  line-height: 40px;
  letter-spacing: -0.02em;
}

.lead {
  margin-top: 12px;
  color: var(--color-text-muted);
  font-size: 17px;
  line-height: 26px;
}

.lead + h1 {
  margin-top: 40px;
}

.back {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

/* Barra de créditos: a tinta invertida destaca-a sem gastar uma cor. */
.credits {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 36px;
  padding-inline: 12px;
  background: var(--color-ink);
  color: rgb(255 255 255 / 0.8);
  font-size: 12px;
  line-height: 20px;
  white-space: nowrap;
}

.credits a {
  color: #fff;
  font-weight: var(--weight-medium);
  text-underline-offset: 3px;
}

.credits a:focus-visible {
  outline-color: #fff;
}

/* O ícone do GitHub: 20px à vista, 44×44 de alvo (o ::after passa a altura da barra sem a mudar). */
.credits .credits-gh {
  position: relative;
  display: inline-flex;
  padding-left: 10px;
  border-left: 1px solid rgb(255 255 255 / 0.25);
}

.credits-gh::after {
  content: "";
  position: absolute;
  top: 50%;
  left: calc(50% + 5px);
  width: 44px;
  height: 44px;
  transform: translate(-50%, -50%);
}

.credits-gh svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.tools {
  display: grid;
  gap: 16px;
  margin-top: 32px;
  padding: 0;
  list-style: none;
}

.tool {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  text-decoration: none;
}

.tool:hover {
  border-color: var(--color-border-strong);
  background: var(--color-surface);
}

.tool h2 {
  font-size: 18px;
  font-weight: var(--weight-semibold);
  line-height: 26px;
}

.tool p {
  flex: 1;
  color: var(--color-text-2);
  font-size: 15px;
}

.tool__go {
  margin-top: 4px;
  font-size: 15px;
  font-weight: var(--weight-medium);
}

.ftr {
  border-top: 1px solid var(--color-hairline);
}

.ftr-in {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0 16px;
  padding-block: 16px;
  color: var(--color-text-muted);
  font-size: 13px;
  line-height: 20px;
  text-align: center;
}

.ftr-repo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 44px;
  min-height: 44px;
  text-decoration: none;
}

.ftr-repo:hover {
  color: var(--color-text);
}

.ftr-repo svg {
  flex: none;
  width: 16px;
  height: 16px;
  fill: currentColor;
}

@media (min-width: 768px) {
  .wrap {
    padding-inline: 32px;
  }

  main {
    padding-block: 72px;
  }

  h1 {
    font-size: 40px;
    line-height: 48px;
  }

  .credits {
    gap: 12px;
    font-size: 13px;
  }

  .tools {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .tool {
    transition: border-color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
  }
}