/* =========== BASE ========= */
body {
  font-family: "Segoe UI", Roboto, sans-serif;
  margin: 0;
  background: #f9fafc;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 20px;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
}
.section-title h2 {
  font-size: 2rem;
  margin-bottom: 10px;
}
.section-title p {
  color: #555;
}

/* =========== NAVBAR ========= */
nav {
  background: #111827;
  padding: 15px 30px;
  display: flex;
  justify-content: center;
  gap: 30px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}
nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  font-size: 1rem;
  position: relative;
  transition: color 0.2s ease;
}
nav a::after {
  content: "";
  position: absolute;
  width: 0%;
  height: 2px;
  background: #3b82f6;
  left: 0;
  bottom: -5px;
  transition: width 0.3s ease;
}
nav a:hover::after {
  width: 100%;
}
nav a:hover {
  color: #93c5fd;
}

/* =========== CARDS ========= */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.card {
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  padding: 25px;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 15px rgba(0,0,0,0.1);
}
.card h3 {
  margin: 0 0 15px;
}
.card p {
  font-size: 0.95rem;
  margin: 10px 0;
}
.price {
  font-size: 1.5rem;
  font-weight: bold;
  margin: 15px 0;
}
.btn {
  display: inline-block;
  padding: 10px 20px;
  background: #2563eb;
  color: white;
  border-radius: 5px;
  text-decoration: none;
  transition: background 0.2s ease;
}
.btn:hover {
  background: #1e40af;
}

/* =========== FOOTER ========= */
footer {
  text-align: center;
  padding: 30px;
  background: #f1f5f9;
  font-size: 0.9rem;
  color: #555;
  margin-top: 40px;
}