body.lab-shell {
  background: radial-gradient(circle at 10% 20%, rgba(87, 122, 255, 0.1), transparent 20%),
    radial-gradient(circle at 90% 10%, rgba(124, 255, 216, 0.08), transparent 25%),
    #05070d;
  color: #e8ecf8;
  min-height: 100vh;
  padding: 16px;
}

.top-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.top-buttons a {
  color: #e8ecf8;
  background: rgba(255, 255, 255, 0.06);
  padding: 8px 10px;
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.2s ease;
}

.top-buttons a:hover,
.top-buttons a:focus {
  background: rgba(255, 255, 255, 0.14);
}

.lab-header {
  max-width: 960px;
  margin: 0 auto 20px;
  text-align: center;
}

.lab-header h1 {
  margin: 8px 0 12px;
}

.status-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: #bcd3ff;
}

.status-row[data-state="ready"] {
  color: #d6fff2;
  background: rgba(108, 243, 232, 0.1);
}

.status-row[data-state="missing"] {
  color: #ffd6d6;
  background: rgba(255, 120, 120, 0.08);
}

.lab-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: rgba(15, 21, 34, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.card header {
  margin-bottom: 12px;
}

.card .meta {
  color: #9fb4d9;
}

.form-grid {
  display: grid;
  gap: 10px;
}

textarea,
input[type="text"] {
  background: rgba(255, 255, 255, 0.04);
  color: #e8ecf8;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  padding: 10px;
}

.input-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #dfe7ff;
}

.primary {
  background: linear-gradient(135deg, #5f8bff, #6cf3e8);
  color: #05070d;
  border: none;
  border-radius: 12px;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
}

.ghost {
  background: transparent;
  color: #e8ecf8;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: 10px 12px;
  cursor: pointer;
}

.status {
  margin-top: 4px;
  color: #bcd3ff;
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.checklist li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  padding: 10px 12px;
  border-radius: 10px;
}

.checklist a {
  color: #c2e4ff;
}

.dot {
  width: 10px;
  height: 10px;
  background: #6cf3e8;
  border-radius: 50%;
  box-shadow: 0 0 8px #6cf3e8;
}

.history {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.history li {
  padding: 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.history strong {
  display: block;
  color: #e8ecf8;
}

.history .meta {
  color: #9fb4d9;
}

@media (min-width: 900px) {
  .lab-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}