:root {
  --brand: #2f6f4f;      /* deep campus green - distinct from bootstrap's default blue */
  --brand-dark: #234f39;
}

body {
  padding-bottom: 72px; /* space for fixed bottom nav on mobile pages */
  background-color: #f7f8fa;
}

.bg-primary,
.btn-primary,
.nav-pills .nav-link.active {
  background-color: var(--brand) !important;
  border-color: var(--brand) !important;
}
.btn-primary:hover {
  background-color: var(--brand-dark) !important;
  border-color: var(--brand-dark) !important;
}
.text-primary { color: var(--brand) !important; }
.btn-outline-primary { color: var(--brand); border-color: var(--brand); }
.btn-outline-primary:hover { background-color: var(--brand); border-color: var(--brand); }

/* --- Mobile bottom nav (student / lecturer) --- */
.bottom-nav {
  z-index: 1030;
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.06);
}
.bottom-nav-link {
  color: #6c757d;
  text-decoration: none;
}
.bottom-nav-link.active {
  color: var(--brand);
  font-weight: 600;
}

.app-topbar {
  z-index: 1020;
}

.page-content {
  padding: 1rem;
  max-width: 640px;
  margin: 0 auto;
}

/* --- Admin desktop layout --- */
@media (min-width: 768px) {
  body.admin-body {
    padding-bottom: 0;
    display: flex;
    min-height: 100vh;
  }
  .admin-sidebar {
    width: 220px;
    min-height: 100vh;
  }
  .admin-content {
    flex: 1;
    padding: 2rem;
    max-width: 1100px;
  }
}
.admin-content {
  padding: 1.25rem;
}

.card-tap {
  transition: box-shadow 0.15s ease;
  cursor: pointer;
}
.card-tap:hover {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.badge { font-weight: 500; }

.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}