body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f6f8;
  color: #1f2933;
}

header {
  background: #0f3d2e;
  color: white;
  padding: 18px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  margin: 0;
  font-size: 22px;
}

nav a,
nav button {
  color: white;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.35);
  padding: 9px 14px;
  border-radius: 8px;
  text-decoration: none;
  margin-left: 8px;
  cursor: pointer;
  font-weight: bold;
}

.container {
  max-width: 1050px;
  margin: 32px auto;
  padding: 0 18px;
}

.card {
  background: white;
  border-radius: 14px;
  padding: 24px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
  margin-bottom: 24px;
}

.form-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

input,
select,
textarea {
  padding: 12px;
  border: 1px solid #d0d7de;
  border-radius: 9px;
  font-size: 14px;
  flex: 1;
}

button,
.primary {
  background: #1f7a4d;
  color: white;
  border: none;
  padding: 12px 16px;
  border-radius: 9px;
  cursor: pointer;
  font-weight: bold;
}

.danger {
  background: #d64545;
  color: white;
}

.tracker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.tracker-card {
  background: #fafafa;
  border: 1px solid #e1e7ef;
  border-radius: 12px;
  padding: 18px;
}

.muted {
  color: #607080;
  font-size: 13px;
}

.status {
  display: inline-block;
  background: #e6f4ea;
  color: #1f7a4d;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 12px;
  margin-top: 8px;
}

@media (max-width: 700px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  nav a,
  nav button {
    margin-left: 0;
    margin-right: 8px;
  }

  .container {
    margin: 18px auto;
  }

  .card {
    padding: 18px;
  }
}