/* ================= CSS Variables ================= */
:root {
  --bg-dark: #0d1117;
  --bg-panel: #161b22;
  --bg-card: #21262d;
  --border-color: #30363d;
  --accent-blue: #58a6ff;
  --accent-green: #3fb950;
  --accent-yellow: #d29922;
  --accent-red: #f85149;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --grid-color: #21262d;
  --canvas-bg: #0d1117;
}

/* Light mode */
body.light-mode {
  --bg-dark: #f6f8fa;
  --bg-panel: #ffffff;
  --bg-card: #f0f2f5;
  --border-color: #d0d7de;
  --accent-blue: #0969da;
  --accent-green: #1a7f37;
  --accent-yellow: #9a6700;
  --accent-red: #cf222e;
  --text-primary: #1f2328;
  --text-secondary: #57606a;
  --grid-color: #e6e8eb;
  --canvas-bg: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  overflow: hidden;
  user-select: none;
}

/* ================= Top Toolbar ================= */
.toolbar {
  height: 48px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 8px;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 8px;
  border-right: 1px solid var(--border-color);
}

.toolbar-group:last-child { border-right: none; }

.toolbar-btn {
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: all 0.15s;
}

.toolbar-btn:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.toolbar-btn.active {
  background: var(--accent-blue);
  color: white;
}

.toolbar-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.toolbar-divider {
  width: 1px;
  height: 24px;
  background: var(--border-color);
  margin: 0 4px;
}

.zoom-display {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 50px;
  text-align: center;
}

.app-title {
  font-weight: 600;
  color: var(--accent-blue);
  margin-right: 16px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.app-title i { font-size: 20px; }

/* ================= Tier Badge ================= */
.sw-tier-badge {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 10px;
}
.sw-tier-free { background: rgba(255,255,255,0.1); color: var(--text-secondary); }
.sw-tier-pro { background: rgba(88, 166, 255, 0.2); color: var(--accent-blue); }

/* ================= Remix Badge ================= */
.sw-remix-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #fff;
  background: #8b5cf6;
  border-radius: 10px;
}
.sw-remix-badge i { font-size: 10px; }

/* ================= PRO Badges & Locks ================= */
.pro-badge {
  font-size: 9px;
  font-weight: 700;
  background: var(--accent-blue);
  color: #fff;
  padding: 1px 5px;
  border-radius: 3px;
  margin-left: 4px;
  vertical-align: middle;
}

.toolbar-btn.locked {
  position: relative;
}

.toolbar-btn.locked::after {
  content: 'PRO';
  position: absolute;
  top: -2px;
  right: -4px;
  font-size: 7px;
  font-weight: 700;
  background: var(--accent-blue);
  color: #fff;
  padding: 0 3px;
  border-radius: 2px;
  line-height: 1.4;
}

.template-item.locked {
  opacity: 0.5;
  position: relative;
}

.template-item.locked::after {
  content: 'PRO';
  position: absolute;
  top: 4px;
  right: 4px;
  font-size: 7px;
  font-weight: 700;
  background: var(--accent-blue);
  color: #fff;
  padding: 0 3px;
  border-radius: 2px;
  line-height: 1.4;
}

/* ================= Upgrade Modal ================= */
.sw-upgrade-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sw-upgrade-modal {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
  max-width: 380px;
}

.sw-upgrade-modal h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.sw-upgrade-modal p {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0 0 20px;
}

.sw-upgrade-modal .sw-btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: none;
}

.sw-upgrade-modal .sw-btn-primary {
  background: var(--accent-blue);
  color: #fff;
}

.sw-upgrade-modal .sw-btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  margin-left: 8px;
}

/* ================= Back to Dashboard ================= */
.toolbar-back {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  margin-right: 8px;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all 0.15s;
}
.toolbar-back:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}

/* ================= Save Indicator ================= */
.save-status {
  font-size: 11px;
  color: var(--text-secondary);
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}
.save-status.saving { color: var(--accent-yellow); }
.save-status.saved { color: var(--accent-green); }
.save-status.error { color: var(--accent-red); }

/* ================= Main Layout ================= */
.main-container {
  display: flex;
  height: calc(100vh - 48px);
}

/* ================= Left Panel - Templates ================= */
.left-panel {
  width: 240px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-header {
  padding: 12px 16px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.component-search {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-color);
}

.component-search input {
  width: 100%;
}

.template-grid {
  padding: 0;
  overflow-y: auto;
}

/* ================= Component Categories ================= */
.component-category {
  border-bottom: 1px solid var(--border-color);
}

.component-category.hidden {
  display: none;
}

.component-category-header {
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: background 0.15s;
}

.component-category-header:hover {
  background: var(--bg-card);
}

.component-category-header i {
  font-size: 10px;
  transition: transform 0.2s;
}

.component-category-header[data-collapsed="true"] i {
  transform: rotate(-90deg);
}

.component-category-items {
  padding: 4px 12px 8px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.component-category-header[data-collapsed="true"] + .component-category-items {
  display: none;
}

.template-item.hidden {
  display: none;
}

.template-item {
  aspect-ratio: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px;
  transition: all 0.15s;
}

.template-item:hover {
  border-color: var(--accent-blue);
  background: rgba(88, 166, 255, 0.1);
}

.template-item i {
  font-size: 20px;
  color: var(--accent-blue);
  width: 32px;
  height: 32px;
  line-height: 32px;
  text-align: center;
  flex-shrink: 0;
  overflow: hidden;
}

.template-item span {
  font-size: 10px;
  color: var(--text-secondary);
  text-align: center;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
  max-width: 100%;
}

/* ================= Canvas Area ================= */
.canvas-container {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#canvas {
  position: absolute;
  top: 0;
  left: 0;
}

.canvas-overlay {
  position: absolute;
  bottom: 16px;
  left: 16px;
  display: flex;
  gap: 8px;
}

.overlay-badge {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 11px;
  color: var(--text-secondary);
}

.overlay-badge.connecting {
  background: rgba(88, 166, 255, 0.2);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

/* ================= AI Build Bar ================= */
.sw-ai-bar {
  position: absolute;
  bottom: 56px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
}

.sw-ai-bar-inner {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 6px 8px 6px 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  width: 480px;
  max-width: 80vw;
}

.sw-ai-key-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 16px;
  cursor: pointer;
  padding: 4px;
  border-radius: 50%;
  position: relative;
  line-height: 1;
}
.sw-ai-key-btn:hover { color: var(--text-primary); }
.sw-ai-key-btn.has-key { color: var(--accent-green); }
.sw-ai-key-btn.has-key::after {
  content: '';
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
}

.sw-ai-prompt {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  min-width: 0;
}
.sw-ai-prompt::placeholder { color: var(--text-secondary); }
.sw-ai-prompt:disabled { opacity: 0.5; }

.sw-ai-send-btn {
  background: var(--accent-blue);
  border: none;
  color: #fff;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}
.sw-ai-send-btn:hover { opacity: 0.85; }
.sw-ai-send-btn:disabled { opacity: 0.4; cursor: default; }

.sw-ai-key-modal {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  width: 280px;
  z-index: 25;
}
.sw-ai-key-modal label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  display: block;
  margin-bottom: 6px;
}
.sw-ai-key-hint {
  font-size: 11px;
  color: var(--text-secondary);
  margin: 6px 0 8px;
}
.sw-ai-key-hint a { color: var(--accent-blue); }
.sw-ai-key-actions {
  display: flex;
  gap: 6px;
}

@keyframes sw-ai-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.sw-ai-send-btn.loading i {
  animation: sw-ai-spin 1s linear infinite;
}
.sw-ai-prompt.sw-ai-error::placeholder {
  color: var(--accent-red, #EF4444);
  opacity: 1;
}

/* ================= Tidy Wires Button ================= */
.sw-tidy-btn {
  position: absolute;
  bottom: 16px;
  right: 16px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 6px 12px;
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  transition: color 0.15s, border-color 0.15s;
}
.sw-tidy-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-blue);
}
.sw-tidy-btn i { font-size: 14px; }

/* ================= Right Panel ================= */
.right-panel {
  width: 320px;
  background: var(--bg-panel);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-section {
  border-bottom: 1px solid var(--border-color);
}

.panel-section-header {
  padding: 12px 16px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.panel-section-header:hover { background: var(--bg-card); }

.panel-section-content {
  padding: 12px 16px;
  max-height: 200px;
  overflow-y: auto;
}

/* ================= List Items ================= */
.item-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.list-item {
  padding: 8px 12px;
  background: var(--bg-card);
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.15s;
}

.list-item:hover {
  border-color: var(--border-color);
}

.list-item.selected {
  border-color: var(--accent-blue);
  background: rgba(88, 166, 255, 0.1);
}

.list-item-icon {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

.list-item-icon.device {
  background: rgba(88, 166, 255, 0.2);
  color: var(--accent-blue);
}

.list-item-icon.wire {
  border-radius: 50%;
}

.list-item-text {
  flex: 1;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.list-item-badge {
  font-size: 10px;
  color: var(--text-secondary);
  background: var(--bg-dark);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ================= Editor Forms ================= */
.editor-section {
  padding: 16px;
  display: none;
}

.editor-section.visible { display: block; }

.form-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-control, .form-select {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 13px;
  border-radius: 6px;
  padding: 8px 12px;
}

.form-control:focus, .form-select:focus {
  background: var(--bg-card);
  border-color: var(--accent-blue);
  color: var(--text-primary);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}

.form-control-sm, .form-select-sm {
  padding: 6px 10px;
  font-size: 12px;
}

/* ================= Terminal Editor ================= */
.terminal-row {
  display: flex;
  gap: 6px;
  margin-bottom: 6px;
  align-items: center;
}

.terminal-row input { flex: 1; }
.terminal-row select { width: 80px; }

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

.btn-icon:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.btn-icon.danger:hover {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

/* ================= Color Picker ================= */
.color-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 12px;
}

.color-swatch {
  aspect-ratio: 1;
  border-radius: 4px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.15s;
}

.color-swatch:hover { transform: scale(1.1); }
.color-swatch.selected { border-color: white; }

/* ================= BOM Panel ================= */
.bom-table {
  width: 100%;
  font-size: 12px;
}

.bom-table th {
  text-align: left;
  padding: 6px 8px;
  color: var(--text-secondary);
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
}

.bom-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border-color);
}

/* ================= Context Menu ================= */
.context-menu {
  position: fixed;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 6px 0;
  min-width: 160px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  z-index: 1000;
  display: none;
}

.context-menu-item {
  padding: 8px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.context-menu-item:hover {
  background: var(--bg-card);
}

.context-menu-item i { color: var(--text-secondary); width: 16px; }
.context-menu-item.danger { color: var(--accent-red); }

.context-menu-divider {
  height: 1px;
  background: var(--border-color);
  margin: 4px 0;
}

/* ================= Buttons ================= */
.btn-primary {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
}

.btn-primary:hover {
  background: #4393e6;
  border-color: #4393e6;
}

.btn-outline-secondary {
  border-color: var(--border-color);
  color: var(--text-secondary);
}

.btn-outline-secondary:hover {
  background: var(--bg-card);
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--accent-red);
  border-color: var(--accent-red);
}

/* ================= Scrollbar ================= */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ================= Keyboard Shortcut Hints ================= */
.shortcut-hint {
  font-size: 10px;
  color: var(--text-secondary);
  background: var(--bg-dark);
  padding: 2px 5px;
  border-radius: 3px;
  margin-left: auto;
}

/* ================= Toast Notifications ================= */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 340px;
  z-index: 1001;
}

.toast {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 16px;
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  animation: slideIn 0.2s ease;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast.success { border-left: 3px solid var(--accent-green); }
.toast.error { border-left: 3px solid var(--accent-red); }
.toast.info { border-left: 3px solid var(--accent-blue); }

/* ================= Read-Only Mode ================= */
body.sw-readonly .left-panel { display: none; }
body.sw-readonly .right-panel { display: none; }
body.sw-readonly .toolbar-group.edit-only { display: none; }
body.sw-readonly .canvas-container { width: 100%; }