* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

/* ===== HEADER ===== */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 60px;
  background: #111;
  color: white;
}

header nav {
  display: flex;
  gap: 20px;
}

header nav a {
  color: white;
  text-decoration: none;
}

/* ===== HERO ===== */
.hero {
  min-height: 90vh;
  background: url('https://images.unsplash.com/photo-1501785888041-af3ef285b470') center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  color: white;
}

.hero-text {
  background: rgba(0,0,0,0.5);
  padding: 30px;
  border-radius: 12px;
  max-width: 600px;
}

.btn {
  display: inline-block;
  margin-top: 15px;
  padding: 10px 20px;
  background: #ff9800;
  color: white;
  text-decoration: none;
  border-radius: 6px;
}

/* ===== SECTIONS ===== */
.section {
  padding: 70px 20px;
  text-align: center;
}

.dark {
  background: #f5f5f5;
}

/* ===== GRID (IMPORTANT FIX) ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1000px;
  margin: 40px auto 0;
}

/* ===== CARD ===== */
.card {
  background: white;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* ===== FORM ===== */
form {
  max-width: 400px;
  margin: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

form input, form textarea {
  padding: 10px;
}

/* ===== FOOTER ===== */
footer {
  background: #111;
  color: white;
  text-align: center;
  padding: 20px;
}

/* ===== RESPONSIVE (ONLY MOBILE) ===== */
@media (max-width: 768px) {

  header {
    flex-direction: column;
    gap: 10px;
    padding: 20px;
  }

  header nav {
    flex-direction: column;
    align-items: center;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .hero-text {
    width: 90%;
  }
}