/* Simple responsive styling */
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
}
.container {
  background: #fff;
  padding: 1.5rem;
  margin-top: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 500px;
}
h1 {
  text-align: center;
  margin-bottom: 1rem;
}
.add-habit {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
#habit-input {
  flex: 1;
  padding: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}
#add-btn {
  padding: 0.5rem 1rem;
  border: none;
  background: #28a745;
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
}
#add-btn:hover { background: #218838; }
#habit-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.habit-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid #eee;
}
.habit-name {
  flex: 1;
  margin-left: 0.5rem;
}
.streak {
  margin-left: auto;
  font-size: 0.9rem;
  color: #555;
}
@media (max-width: 400px) {
  .container { padding: 1rem; }
}