* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, Arial, Helvetica, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
}

button,
input,
textarea {
  font: inherit;
}

.page {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

.hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.layout-grid {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  gap: 16px;
  align-items: start;
}

.stack {
  display: grid;
  gap: 16px;
}

.card {
  background: #111827;
  border: 1px solid #334155;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.stat-card {
  min-height: 110px;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  margin-top: 8px;
}

.form-grid {
  display: grid;
  gap: 14px;
}

.form-grid label {
  display: grid;
  gap: 6px;
}

.full-width {
  grid-column: 1 / -1;
}

input,
textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #475569;
  background: #0b1220;
  color: #e2e8f0;
}

button {
  border: 1px solid #64748b;
  background: #1e293b;
  color: #e2e8f0;
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
}

button.primary {
  background: #2563eb;
  border-color: #2563eb;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

th,
td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid #334155;
  vertical-align: top;
}

.muted {
  color: #94a3b8;
  display: block;
  margin-bottom: 4px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.error {
  color: #fca5a5;
}

.actions-cell {
  display: flex;
  gap: 8px;
}

.selected-row {
  background: rgba(37, 99, 235, 0.12);
}

.empty-state {
  color: #94a3b8;
  padding: 12px 0 0;
}

@media (max-width: 1100px) {
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .layout-grid {
    grid-template-columns: 1fr;
  }

  .summary-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 700px) {
  .stats-grid,
  .summary-grid {
    grid-template-columns: 1fr;
  }
}