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

/* -------------------------------------------------------
   Document
------------------------------------------------------- */
html {
  height: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* -------------------------------------------------------
   Header
------------------------------------------------------- */
header {
  text-align: center;
  padding: 3.5rem 1.5rem 1.5rem;
}

header h1 {
  font-size: clamp(1.75rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-accent);
}

header .description {
  margin-top: 0.75rem;
  font-size: clamp(0.95rem, 2.5vw, 1.15rem);
  color: var(--color-text);
  max-width: 52ch;
  margin-inline: auto;
}

/* -------------------------------------------------------
   Main / image
------------------------------------------------------- */
main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
}

figure {
  margin: 0;
}

main img {
  display: block;
  width: min(480px, 90vw);
  height: auto;
  border-radius: 1rem;
  border: 2px solid var(--color-accent);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.10);
}

/* -------------------------------------------------------
   Footer
------------------------------------------------------- */
footer {
  text-align: center;
  padding: 1.25rem 1.5rem;
  font-size: 0.85rem;
  color: var(--color-text);
  opacity: 0.7;
}

/* -------------------------------------------------------
   Responsive — phones
------------------------------------------------------- */
@media (max-width: 480px) {
  header {
    padding-top: 2.5rem;
  }

  main img {
    border-radius: 0.75rem;
  }
}