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

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: #f5f7fb;
  color: #333;
}

/* HEADER */
header {
  background: linear-gradient(135deg, #0d6efd, #4dabf7);
  color: white;
  padding: 80px 20px;
  text-align: center;
}

header h1 {
  font-size: 42px;
  animation: fadeDown 1s ease;
}

header p {
  margin-top: 10px;
  font-size: 18px;
  animation: fadeUp 1.2s ease;
}

.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 25px;
  background: white;
  color: #0d6efd;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  transition: 0.3s;
}

.btn:hover {
  background: #eaeaea;
  transform: scale(1.05);
}

/* FEATURES */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
  gap: 20px;
  padding: 60px 20px;
  max-width: 1100px;
  margin: auto;
}

.card {
  background: white;
  padding: 25px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.08);
  transition: 0.3s;
  animation: fadeUp 1s ease;
}

.card:hover {
  transform: translateY(-5px);
}

/* CONTAINER */
.container {
  max-width: 800px;
  margin: 50px auto;
  background: white;
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

/* FOOTER */
footer {
  background: #0a0a0a;
  color: #ccc;
  text-align: center;
  padding: 25px 15px;
  font-size: 14px;
  margin-top: auto;
}

footer a {
  color: #4dabf7;
  margin: 0 12px;
  text-decoration: none;
}

footer a:hover {
  color: #fff;
  text-decoration: underline;
}

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}