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

body {
  font-family: 'Inter', sans-serif;
  color: #222;
  background-color: #f9f9f9;
  line-height: 1.6;
}

/* ============ HEADER ============ */
header {
  background: #222;
  color: #fff;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
}

header nav a {
  color: #fff;
  text-decoration: none;
  margin-left: 1rem;
  font-weight: 600;
}

header nav a:hover {
  text-decoration: underline;
}

/* ============ HERO SECTION ============ */
.hero {
  background: linear-gradient(135deg, #0077b6, #00b4d8);
  color: #fff;
  padding: 4rem 2rem;
  text-align: justify;
  display: grid;
  place-items: center;
}

.hero-text {
  max-width: 900px;
}

.hero-text h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.hero-text p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.btn {
  background: #fff;
  color: #0077b6;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.3s, color 0.3s;
}

.btn:hover {
  background: #0077b6;
  color: #fff;
}

/* ============ MAIN: GRID LAYOUT ============ */
main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
}

/* ============ CONTENT/ASIDE/FOOTER STYLES ============ */
section, aside {
  background: white;
  padding: 1.5rem;
  border: 1px solid #ddd;
  border-radius: 6px;
}

footer {
  background: #222;
  color: #fff;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}

/* ============ RESPONSIVE ============ */
@media (min-width: 768px) {
  .hero-text h2 {
    font-size: 2.5rem;
  }

  main {
    grid-template-columns: 2fr 1fr;
  }
}

@media (min-width: 1024px) {
  .hero {
    text-align: left;
    padding: 6rem 4rem;
  }
}