body {
  font-family: Arial, sans-serif;
  background: #f2f2f2;
  margin: 0;
  padding: 10px;
}

.card {
  background: #fff;
  border-radius: 10px;
  padding: 15px;
  margin-bottom: 12px;
}

.card.open {
  border-left: 6px solid #d9534f;
}

.card.in_progress {
  border-left: 6px solid #f0ad4e;
}

button {
  width: 100%;
  padding: 14px;
  margin-top: 10px;
  font-size: 16px;
  border: none;
  border-radius: 6px;
  background: #0275d8;
  color: #fff;
}
.small { opacity: .7; font-size: 12px; margin-top: 6px; }

button.secondary { background: #5bc0de; }
button.danger { background: #d9534f; }