/* General page layout */
body {
  font-family: Arial, sans-serif;
  max-width: 900px;
  margin: 20px auto;
  padding: 10px;
  line-height: 1.5;
  color: #1a1a1a;
  background: #f5f5f5;
}

main {
  background: #ffffff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 8px rgba(0,0,0,0.05);
}

/* Headings */
h1, h2, h3 {
  color: #1a1a1a;
  margin-top: 0.5em;
}

h1 {
  font-size: 1.8rem;
}

h2 {
  font-size: 1.4rem;
}

/* Forms */
form {
  margin-top: 15px;
}

input, select {
  width: 100%;
  padding: 8px;
  margin: 6px 0;
  box-sizing: border-box;
  border-radius: 4px;
  border: 1px solid #ccc;
}

fieldset {
  margin-top: 15px;
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid #ddd;
  background: #fafafa;
}

legend {
  font-weight: bold;
}

/* Buttons */
button {
  padding: 10px 16px;
  margin-top: 10px;
  cursor: pointer;
  border-radius: 4px;
  border: none;
  background: #003366;
  color: #ffffff;
  font-weight: bold;
}

button:hover {
  background: #00509e;
}

/* Result cards / boxes */
.result-box {
  margin-top: 20px;
  padding: 15px;
  border: 1px solid #ccc;
  border-radius: 6px;
  background: #f9f9f9;
}

.profile-card,
.pool-card {
  border-bottom: 1px solid #ddd;
  padding: 10px 0;
}

.profile-card:last-child,
.pool-card:last-child {
  border-bottom: none;
}

/* Tags for pool types */
.tag {
  display: inline-block;
  padding: 2px 6px;
  margin-right: 5px;
  font-size: 0.8em;
  border-radius: 3px;
  background: #eee;
}

.tag-primary {
  background: #003366;
  color: #fff;
}

.tag-warning {
  background: #d88000;
  color: #fff;
}

.tag-danger {
  background: #b30000;
  color: #fff;
}

/* Notes and messages */
.note {
  font-size: 0.9em;
  color: #555;
}

.safe {
  color: green;
  font-weight: bold;
}

.warning {
  color: #d88000;
  font-weight: bold;
}

.danger {
  color: red;
  font-weight: bold;
}

/* Simple links */
a {
  color: #00509e;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.lesson-nav {
  margin-top: 2rem;
}

.lesson-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
}