body {
  font-family: system-ui, sans-serif;
  background: #fefefe;
  color: #1b1b1b;
  margin: 0;
  padding: 0;
}

/* Top bar */

header {
  display: flex;
  align-items: center;
  padding: 1rem 2rem;
  background: linear-gradient(
    135deg,
    #004d4d,
    #009999
  ); /* dark → lighter teal */
  color: white;
}

header img {
  height: 50px;
  width: 50px;
  object-fit: contain;
  margin-right: 1rem;
  background: rgb(22, 43, 43); /* optional if logo background is transparent */
  border-radius: 8px; /* soften edges */
  padding: 4px; /* breathing room */
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15); /* subtle lift */
}

header h1 {
  font-size: 1.5rem;
  margin: 0;
}

/* Tabs */
nav {
  display: flex;
  justify-content: center;
  border-bottom: 2px solid #e0e0e0;
  background: #f5f9f9;
  gap: 0.5rem;
  padding: 0.5rem;
}

nav button {
  flex: 1;
  max-width: 200px;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: 8px 8px 0 0;
  background: linear-gradient(180deg, #eaf4f4, #dfeeee); /* subtle gradient */
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: #004d4d;
  transition: all 0.25s ease;
}

nav button:hover {
  background: linear-gradient(180deg, #dff0f0, #cfe6e6); /* hover effect */
  color: #005f5f;
}

nav button.active {
  background: linear-gradient(
    180deg,
    #007373,
    #005f5f
  ); /* subtle darker teal gradient */
  color: white;
  box-shadow: 0 -2px 6px rgba(0, 0, 0, 0.1);
}

/* Tab content */
.tab-content {
  display: none;
  padding: 2rem;
  max-width: 900px;
  margin: auto;
  line-height: 1.7;
  background: white;
  border-radius: 0 0 8px 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.perm-list {
  list-style-type: disc;
  padding-left: 20px;
}

.perm-list .title {
  font-family: monospace;
  font-weight: 600;
  margin-bottom: 2px;
}

.perm-list .desc {
  margin-left: 1rem;
  color: #555;
  font-size: 0.95em;
}

.tab-content.active {
  display: block;
}

h2 {
  color: #004d4d;
}

ul {
  padding-left: 1.5rem;
}

footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
  color: #666;
}