.esptool-page {
  display: grid;
  gap: 14px;
}

.esptool-warning {
  border: 1px solid #d9b57f;
  background: #fff7e8;
  color: #6a4a1f;
  border-radius: 10px;
  padding: 12px 14px;
}

.esptool-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.esptool-step {
  border: 1px solid var(--tool-border);
  background: #fff;
  border-radius: 999px;
  padding: 8px 12px;
  text-align: center;
  color: var(--tool-text-muted);
  font-weight: 700;
}

.esptool-step.is-active {
  border-color: var(--tool-brand);
  color: var(--tool-brand);
  background: var(--tool-brand-soft);
}

.esptool-step.is-complete {
  border-color: #9bcfae;
  color: #1d6f3d;
  background: #eef9f1;
}

.esptool-layout {
  display: grid;
  gap: 14px;
  grid-template-columns: 1.3fr 1fr;
}

.esptool-card {
  border: 1px solid var(--tool-border);
  border-radius: 12px;
  background: var(--tool-surface);
  box-shadow: var(--shadow-1);
  padding: 16px;
}

.esptool-card h2 {
  margin: 0 0 10px;
}

.esptool-board-group h3 {
  margin: 12px 0 8px;
}

.esptool-board-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.esptool-board-card {
  border: 1px solid var(--tool-border);
  border-radius: 10px;
  padding: 12px;
  background: #fff;
  cursor: pointer;
  user-select: none;
  font-weight: 600;
}

.esptool-board-card:hover,
.esptool-board-card:focus-visible {
  outline: none;
  border-color: var(--tool-brand);
  box-shadow: 0 0 0 2px rgba(0, 120, 212, 0.18);
}

.esptool-board-card.is-selected {
  border-color: var(--tool-brand);
  background: var(--tool-brand-soft);
  color: #004d89;
}

.esptool-selected-board {
  margin: 0 0 10px;
}

.esptool-instructions ol {
  margin: 0;
  padding-left: 18px;
  color: var(--tool-text-muted);
}

.esptool-actions {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.esptool-editor textarea {
  width: 100%;
  border: 1px solid var(--tool-border);
  border-radius: 10px;
  padding: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 14px;
  line-height: 1.45;
  resize: vertical;
}

.esptool-extra-files p {
  margin: 0;
  color: var(--tool-text-muted);
}

.esptool-file-list {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--tool-text-muted);
}

.esptool-file-list li {
  margin: 5px 0;
}

.esptool-file-list .is-empty {
  list-style: none;
  margin-left: -18px;
}

.esptool-file-list code {
  color: var(--tool-text);
  font-size: 12px;
}

.esptool-install-progress progress {
  width: 100%;
  height: 18px;
}

.esptool-install-progress #progress-label {
  margin: 8px 0 0;
  color: var(--tool-text-muted);
}

.esptool-log {
  margin-top: 10px;
  border: 1px solid var(--tool-border);
  border-radius: 10px;
  background: #161617;
  color: #e9ecef;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 12px;
  line-height: 1.4;
  padding: 10px;
  max-height: 290px;
  overflow: auto;
}

.esptool-log__line + .esptool-log__line {
  margin-top: 4px;
}

.esptool-log__line--success {
  color: #7ce7a1;
}

.esptool-log__line--warn {
  color: #ffd384;
}

.esptool-log__line--error {
  color: #ff9f9f;
}

.esptool-done {
  border-color: #9bcfae;
  background: linear-gradient(135deg, #f2fbf4, #ffffff);
}

@media (max-width: 980px) {
  .esptool-layout {
    grid-template-columns: 1fr;
  }

  .esptool-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}