.admin-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem clamp(1rem, 4vw, 3rem);
  background: #003366;
  color: #ffffff;
}

.admin-topbar a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 800;
}

.admin-topbar a:hover,
.admin-topbar a:focus {
  text-decoration: underline;
}

.admin-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.admin-session-chip {
  display: inline-flex;
  align-items: center;
  max-width: min(100%, 520px);
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  font-size: 0.92rem;
  overflow-wrap: anywhere;
}

.admin-session-chip.signed-out {
  background: rgba(159, 29, 53, 0.24);
}

.admin-shell-button {
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  padding: 0.45rem 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  font-weight: 800;
  cursor: pointer;
}

.admin-shell-button:hover,
.admin-shell-button:focus {
  background: #008081;
}

.admin-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.admin-card {
  display: block;
  padding: 1.25rem;
  border: 1px solid #d9e2ea;
  border-radius: 22px;
  background: #ffffff;
  color: #172033;
  text-decoration: none;
  box-shadow: 0 18px 45px rgba(0, 51, 102, 0.12);
}

.admin-card:hover,
.admin-card:focus {
  border-color: #008081;
  transform: translateY(-1px);
}

.admin-card h2 {
  margin-top: 0;
  color: #003366;
}

.admin-card p {
  margin-bottom: 0;
  color: #566273;
}

.admin-guard-panel {
  margin-top: 1.25rem;
  padding: 1rem;
  border: 1px solid #d9e2ea;
  border-radius: 18px;
  background: #ffffff;
}

.admin-guard-panel strong {
  color: #003366;
}

.admin-access-denied-panel {
  width: min(820px, calc(100% - 2rem));
  margin: 2rem auto;
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 1px solid #d9e2ea;
  border-top: 5px solid #bfacfe;
  border-radius: 24px;
  background:
    radial-gradient(circle at top right, rgba(191, 172, 254, 0.24), transparent 18rem),
    linear-gradient(180deg, #ffffff, #eef8fb);
  box-shadow: 0 18px 45px rgba(0, 51, 102, 0.12);
  color: #172033;
}

.admin-access-denied-panel::before {
  content: "Restricted area";
  display: inline-flex;
  margin-bottom: 0.75rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: #e0f4f4;
  color: #008081;
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.admin-access-denied-panel h1 {
  margin: 0 0 0.7rem;
  color: #003366;
  font-family: Cambria, Georgia, serif;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.1;
}

.admin-access-denied-panel p {
  max-width: 680px;
  margin: 0.7rem 0 0;
  color: #566273;
  font-size: 1rem;
}

.admin-access-denied-panel a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.75rem;
  padding: 0.72rem 1rem;
  border-radius: 999px;
  background: #008081;
  color: #ffffff;
  font-weight: 900;
  text-decoration: none;
}

.admin-access-denied-panel a:hover,
.admin-access-denied-panel a:focus {
  background: #003366;
}

@media (max-width: 820px) {
  .admin-topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .admin-card-grid {
    grid-template-columns: 1fr;
  }

  .admin-access-denied-panel {
    margin: 1rem auto;
    border-radius: 18px;
  }
}