/* --- Admin-Specific Styles --- */
body {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--bg-app);
  height: 100vh;
}

/* Header */
.admin-header {
  height: 60px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: var(--bg-sidebar);
  flex-shrink: 0;
}
.admin-title h1 {
  margin: 0;
  font-size: 16px;
  color: var(--text-main);
}
.admin-title span {
  font-size: 11px;
  color: var(--text-dim);
  margin-left: 8px;
  font-family: var(--font-mono);
}

/* Main Body */
.admin-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

/* Editor Pane (Left) */
.editor-pane {
  width: 450px;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--bg-app);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  flex-shrink: 0;
}

.section-group {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  background: var(--bg-panel);
}

.section-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-title::before {
  content: "";
  width: 4px;
  height: 12px;
  background: var(--accent);
  border-radius: 2px;
}

.form-label {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

.input-text,
.input-area {
  width: 100%;
  background: var(--bg-app);
  border: 1px solid var(--border);
  padding: 10px;
  color: var(--text-main);
  border-radius: 6px;
  font-family: var(--font-ui);
  font-size: 13px;
  transition: border 0.2s;
}

.input-text:focus,
.input-area:focus {
  outline: none;
  border-color: var(--accent);
}

.input-area {
  min-height: 80px;
  resize: vertical;
  line-height: 1.5;
}

.code-area {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  background: #000;
  min-height: 120px;
}

.btn-primary,
.btn-secondary,
.btn-danger {
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  font-size: 12px;
  transition: opacity 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-secondary {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  color: var(--text-main);
}
.btn-danger {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--danger);
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 6px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.icon-btn:hover {
  background: var(--bg-active);
  color: var(--text-main);
}

.btn-block {
  width: 100%;
  display: block;
  margin-top: 8px;
}
.btn-primary:hover,
.btn-secondary:hover,
.btn-danger:hover {
  opacity: 0.9;
}

/* Preview Pane (Right) */
.preview-container {
  flex: 1;
  background: #000;
  display: flex;
  flex-direction: column;
  position: relative;
}

.preview-toolbar {
  height: 48px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: var(--bg-panel);
}

.toggle-group {
  display: flex;
  gap: 4px;
  background: var(--bg-app);
  padding: 4px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.toggle-btn {
  padding: 6px 12px;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  border-radius: 4px;
}
.toggle-btn.active {
  background: var(--bg-active);
  color: var(--text-main);
}

.preview-content-wrapper {
  flex: 1;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 48px;
  background-image: radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 20px 20px;
}

.device-mockup {
  width: 400px;
  height: 100%;
  max-height: 800px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.preview-header-mock {
  padding: 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-sidebar);
}

.source-view {
  display: none;
  flex: 1;
  position: relative;
}
.source-view.visible {
  display: block;
}

#code-output {
  width: 100%;
  height: 100%;
  border: none;
  padding: 24px;
  resize: none;
  background: #0d0d0d;
  color: #a9b7c6;
  font-family: var(--font-mono);
  font-size: 13px;
}

/* Tree View Styles */
.tree-root {
  margin-bottom: 24px;
}
.tree-stage {
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 8px;
  overflow: hidden;
}
.tree-stage-header {
  padding: 10px;
  background: var(--bg-sidebar);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 12px;
  border-bottom: 1px solid var(--border);
}
.tree-items {
  display: none;
  background: var(--bg-app);
}
.tree-items.expanded {
  display: block;
}
.tree-item {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  cursor: pointer;
  padding-left: 24px;
}
.tree-item:last-child {
  border-bottom: none;
}
.tree-item:hover {
  background: var(--bg-active);
}
.tree-item.active {
  background: var(--bg-active);
  color: var(--accent);
}

.icon-action {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
}
.icon-action:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
}
.icon-danger:hover {
  color: var(--danger);
}

.hidden {
  display: none !important;
}