* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 18px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #0b1220;
  color: #e5e7eb;
}

.container {
  max-width: 920px;
  margin: 0 auto;
}

.header {
  margin-bottom: 14px;
}

.title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.subtitle {
  margin-top: 6px;
  color: #a5b4fc;
  font-size: 13px;
}

.card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 16px;
  margin-bottom: 14px;
  backdrop-filter: blur(8px);
}

.card-title {
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.tests {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.test-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.name {
  font-weight: 600;
}

.badge {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  white-space: nowrap;
}

.pass {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.fail {
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.desc {
  color: rgba(229, 231, 235, 0.8);
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 10px;
}

.row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(99, 102, 241, 0.2);
  color: #e5e7eb;
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
}

.result {
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.06);
  min-height: 44px;
  white-space: pre-wrap;
  font-size: 13px;
}

.error {
  margin-top: 10px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fecaca;
  white-space: pre-wrap;
  font-size: 13px;
  display: none;
}

@media (min-width: 720px) {
  .tests {
    grid-template-columns: 1fr 1fr;
  }
}