body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f0fdf4;
  margin: 0;
  padding: 20px;
  color: #14532d;
}
header {
  text-align: center;
  padding-bottom: 10px;
}
main {
  max-width: 600px;
  margin: auto;
}
section {
  background: #e0f2f1;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
input[type="text"] {
  padding: 8px;
  width: 70%;
  border-radius: 6px;
  border: 1px solid #ccc;
}
button {
  padding: 8px 12px;
  background-color: #38b000;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}
button:hover {
  background-color: #2f7300;
}
a.link {
  display: inline-block;
  margin-top: 8px;
  text-decoration: none;
  color: #065f46;
  font-weight: bold;
}
.badge-container {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.badge {
  background: #d4edda;
  color: #155724;
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: bold;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.badge-section {
  text-align: center;
  margin-top: 2rem;
  background: #e6ffe6;
  padding: 1.5rem;
  border-radius: 20px;
  box-shadow: 0 0 10px #99cc99;
}
.green-badge {
  width: 150px;
  margin: 1rem auto;
  display: block;
}

.habit-log li {
  background: #f9fafb;
  padding: 10px;
  margin-bottom: 5px;
  border-left: 5px solid #38b000;
  border-radius: 4px;
}