body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background: #f5f7fb;
  color: #333;
}

.admin-page {
  max-width: 1040px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  gap: 14px;
}

.admin-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
}

.admin-header h1 {
  margin: 0;
  font-size: 28px;
}

.back-link,
#logout-btn {
  border: 1px solid #d8dde6;
  border-radius: 10px;
  background: #fff;
  color: #333;
  padding: 9px 12px;
  text-decoration: none;
  cursor: pointer;
}

.admin-card {
  background: #fff;
  border: 1px solid #e2e7ef;
  border-radius: 12px;
  padding: 14px;
}

.admin-card h2 {
  margin: 0 0 10px;
}

.invite-form {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.invite-form input {
  flex: 1;
  min-width: 240px;
  border: 1px solid #d8dde6;
  border-radius: 10px;
  padding: 9px 11px;
}

.invite-form button {
  border: 1px solid #7dbf2d;
  border-radius: 10px;
  background: #7dbf2d;
  color: #fff;
  padding: 10px 12px;
  cursor: pointer;
}

.muted {
  color: #707782;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 8px;
  border-bottom: 1px solid #edf0f5;
  font-size: 14px;
}

.activity-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 7px;
  font-size: 14px;
}