/* ═══ Strategy Builder — n8n-style visual node editor panel ═══ */

#strategyBuilderPanel {
  display: none; position: fixed; right: 0; top: var(--toolbar-height, 38px); bottom: 0; z-index: 800; width: 560px;
  min-width: 400px; max-width: 90vw;
}
#strategyBuilderPanel.open { display: flex; }
#strategyBuilderPanel.sb-fullscreen {
  width: 100% !important; max-width: 100vw; left: 0; z-index: 900;
}

.sb-panel {
  width: 100%; height: 100%;
  background: var(--bg-surface, #1e222d); border-left: 1px solid var(--border-primary, #2a2e39);
  display: flex; flex-direction: column;
  box-shadow: -8px 0 32px rgba(0,0,0,0.4);
  animation: csSlideIn 0.2s ease-out;
}
#strategyBuilderPanel.sb-fullscreen .sb-panel { border-left: none; }

/* Resize handle */
.sb-resize-handle {
  position: absolute; left: -3px; top: 0; bottom: 0; width: 6px;
  cursor: col-resize; z-index: 10;
}
.sb-resize-handle:hover,
.sb-resize-handle:active { background: var(--accent, #2962ff); }
#strategyBuilderPanel.sb-fullscreen .sb-resize-handle { display: none; }

/* Header */
.sb-header {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; border-bottom: 1px solid var(--border-primary, #2a2e39);
  min-height: 40px; flex-shrink: 0;
}
.sb-header h3 { margin: 0; font-size: 13px; font-weight: 700; color: var(--text-primary, #d1d4dc); white-space: nowrap; }
.sb-header-right { display: flex; align-items: center; gap: 4px; margin-left: auto; }

/* Mode toggle (Code / Visual) */
.sb-mode-toggle {
  display: flex; background: var(--bg-secondary, #131722); border-radius: 4px; overflow: hidden;
  border: 1px solid var(--border-primary, #2a2e39);
}
.sb-mode-btn {
  padding: 4px 12px; font-size: 11px; font-weight: 600; cursor: pointer;
  background: transparent; border: none; color: var(--text-secondary, #787b86);
  transition: background 0.15s, color 0.15s;
}
.sb-mode-btn.active {
  background: var(--accent, #2962ff); color: #fff;
}
.sb-mode-btn:hover:not(.active) { color: var(--text-primary, #d1d4dc); }

/* Header buttons */
.sb-header-btn {
  background: none; border: none; color: var(--text-secondary, #787b86); cursor: pointer;
  width: 28px; height: 28px; display: flex; align-items: center; justify-content: center;
  border-radius: 4px; font-size: 16px; transition: color 0.12s, background 0.12s;
}
.sb-header-btn:hover { color: var(--text-primary, #d1d4dc); background: rgba(255,255,255,0.06); }
.sb-close-btn { font-size: 20px; }

/* Body — holds visual and code views */
.sb-body { flex: 1; overflow: hidden; display: flex; flex-direction: column; }

/* Visual mode layout: palette | canvas | params */
.sb-layout {
  display: flex; flex: 1; min-height: 0; overflow: hidden;
}

/* Palette */
.sb-palette {
  width: 170px; min-width: 140px; flex-shrink: 0;
  overflow-y: auto; border-right: 1px solid var(--border-primary, #2a2e39);
  background: var(--bg-secondary, #131722); padding: 4px 0;
}
.sb-palette-cat { margin-bottom: 2px; }
.sb-palette-cat-header {
  padding: 6px 10px; font-size: 10px; font-weight: 700; text-transform: uppercase;
  color: var(--text-secondary, #787b86); letter-spacing: 0.5px;
}
.sb-palette-node {
  padding: 5px 10px 5px 14px; font-size: 12px; color: var(--text-primary, #d1d4dc);
  cursor: grab; display: flex; align-items: center; gap: 6px;
  transition: background 0.12s;
}
.sb-palette-node:hover { background: rgba(255,255,255,0.06); }
.sb-palette-node:active { cursor: grabbing; }
.sb-palette-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}

/* Canvas area */
.sb-canvas-wrap {
  flex: 1; position: relative; overflow: hidden; background: #131722;
}
.sb-canvas-wrap canvas {
  display: block; width: 100%; height: 100%;
}
.sb-canvas-hint {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  color: var(--text-secondary, #787b86); font-size: 13px; pointer-events: none;
  text-align: center; max-width: 240px; line-height: 1.5;
}

/* Param editor */
.sb-param-panel {
  width: 180px; min-width: 140px; flex-shrink: 0;
  overflow-y: auto; border-left: 1px solid var(--border-primary, #2a2e39);
  background: var(--bg-secondary, #131722); padding: 8px;
}
.sb-param-header { font-size: 12px; font-weight: 700; color: var(--text-primary, #d1d4dc); margin-bottom: 4px; }
.sb-param-desc { font-size: 11px; color: var(--text-secondary, #787b86); margin-bottom: 10px; }
.sb-param-label {
  display: flex; flex-direction: column; gap: 3px; font-size: 11px;
  color: var(--text-secondary, #787b86); margin-bottom: 8px;
}
.sb-param-input, .sb-param-color {
  background: var(--bg-surface, #1e222d); border: 1px solid var(--border-primary, #2a2e39);
  color: var(--text-primary, #d1d4dc); border-radius: 4px; padding: 4px 6px; font-size: 12px;
  width: 100%; box-sizing: border-box;
}
.sb-param-input:focus { border-color: var(--accent, #2962ff); outline: none; }

/* Code view (shown when mode=code) */
.sb-code-view {
  flex: 1; display: flex; flex-direction: column; overflow: hidden;
}
.sb-code-readonly {
  flex: 1; overflow: auto; padding: 12px; font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 12px; line-height: 1.6; color: #d1d4dc; background: #131722;
  white-space: pre; tab-size: 4;
}

/* Action bar */
.sb-actions {
  display: flex; align-items: center; gap: 8px; padding: 8px 12px;
  border-top: 1px solid var(--border-primary, #2a2e39); flex-shrink: 0;
}
.sb-actions .btn-primary {
  padding: 6px 16px; border: none; border-radius: 4px; font-size: 12px; font-weight: 600;
  cursor: pointer; background: var(--accent, #2962ff); color: #fff; transition: background 0.15s;
}
.sb-actions .btn-primary:hover { background: #1e53e5; }
.sb-actions .btn-secondary {
  padding: 6px 12px; border: 1px solid var(--border-primary, #2a2e39); border-radius: 4px;
  font-size: 12px; cursor: pointer; background: transparent; color: var(--text-secondary, #787b86);
  transition: color 0.15s, border-color 0.15s;
}
.sb-actions .btn-secondary:hover { color: var(--text-primary, #d1d4dc); border-color: var(--text-secondary, #787b86); }
.sb-actions-spacer { flex: 1; }

/* Inline mode (inside indicator drawer) */
#indVisualBuilder {
  flex: 1; min-height: 0;
  overflow: hidden; display: flex; flex-direction: column;
}
#indSbContainer {
  flex: 1; min-height: 0; overflow: hidden;
  display: flex; flex-direction: column;
}
#indSbContainer .sb-layout { flex: 1; min-height: 0; }
#indSbContainer .sb-palette { overflow-y: auto; max-height: 100%; }

/* Inline action bar */
.sb-inline-actions {
  display: flex; align-items: center; gap: 8px; padding: 10px 14px;
  border-top: 1px solid var(--border-primary, #2a2e39);
  background: var(--bg-surface, #1e222d); flex-shrink: 0;
}
.sb-inline-actions .sb-act-btn {
  padding: 6px 14px; border-radius: 4px; font-size: 12px; font-weight: 600;
  cursor: pointer; border: 1px solid var(--border-primary, #2a2e39);
  background: transparent; color: var(--text-secondary, #787b86);
  transition: all 0.15s;
}
.sb-inline-actions .sb-act-btn:hover {
  color: var(--text-primary, #d1d4dc); border-color: var(--text-secondary, #787b86);
  background: rgba(255,255,255,0.04);
}
.sb-inline-actions .sb-act-btn svg { vertical-align: -2px; margin-right: 4px; }
.sb-inline-actions .sb-act-spacer { flex: 1; }
.sb-inline-actions .sb-act-primary {
  padding: 7px 18px; border-radius: 4px; font-size: 12px; font-weight: 700;
  cursor: pointer; border: 1px solid var(--border-primary, #2a2e39);
  background: transparent; color: var(--text-secondary, #787b86);
  transition: all 0.15s;
}
.sb-inline-actions .sb-act-primary:hover {
  color: var(--text-primary, #d1d4dc); border-color: var(--text-secondary, #787b86);
  background: rgba(255,255,255,0.04);
}

/* Save/Load popover */
.sb-popover {
  background: var(--bg-surface, #1e222d); border: 1px solid var(--border-primary, #2a2e39);
  border-radius: 6px; padding: 8px; min-width: 200px; max-width: 280px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5); z-index: 1000;
}
.sb-popover-title {
  font-size: 11px; font-weight: 700; color: var(--text-secondary, #787b86);
  text-transform: uppercase; letter-spacing: 0.5px; padding: 2px 4px 6px; border-bottom: 1px solid var(--border-primary, #2a2e39); margin-bottom: 6px;
}
.sb-popover-input {
  width: 100%; box-sizing: border-box; padding: 6px 8px; font-size: 12px;
  background: var(--bg-secondary, #131722); border: 1px solid var(--border-primary, #2a2e39);
  color: var(--text-primary, #d1d4dc); border-radius: 4px; margin-bottom: 6px;
}
.sb-popover-input:focus { border-color: var(--accent, #2962ff); outline: none; }
.sb-popover-row { display: flex; justify-content: flex-end; }
.sb-popover-confirm {
  padding: 5px 14px; border: none; border-radius: 4px; font-size: 12px; font-weight: 600;
  cursor: pointer; background: var(--accent, #2962ff); color: #fff; transition: background 0.15s;
}
.sb-popover-confirm:hover { background: #1e53e5; }
.sb-popover-list { max-height: 200px; overflow-y: auto; }
.sb-popover-item {
  display: flex; align-items: center; justify-content: space-between; padding: 6px 8px;
  font-size: 12px; color: var(--text-primary, #d1d4dc); border-radius: 4px; cursor: pointer;
  transition: background 0.12s;
}
.sb-popover-item:hover { background: rgba(255,255,255,0.06); }
.sb-popover-del {
  background: none; border: none; color: var(--text-secondary, #787b86); cursor: pointer;
  font-size: 16px; line-height: 1; padding: 0 2px; transition: color 0.12s;
}
.sb-popover-del:hover { color: #ef5350; }
.sb-popover-empty {
  padding: 12px 8px; text-align: center; font-size: 12px; color: var(--text-secondary, #787b86);
}

/* Palette search */
.sb-palette-search {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border-primary, #2a2e39);
}
.sb-search-input {
  width: 100%; box-sizing: border-box;
  padding: 5px 8px; font-size: 11px;
  background: var(--bg-surface, #1e222d); border: 1px solid var(--border-primary, #2a2e39);
  color: var(--text-primary, #d1d4dc); border-radius: 4px;
  outline: none; transition: border-color 0.15s;
}
.sb-search-input:focus { border-color: var(--accent, #2962ff); }
.sb-search-input::placeholder { color: var(--text-secondary, #787b86); }

/* Zoom controls */
.sb-zoom-controls {
  position: absolute; bottom: 100px; right: 10px;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  background: rgba(30,34,45,0.92); border: 1px solid var(--border-primary, #2a2e39);
  border-radius: 6px; padding: 4px; z-index: 5;
  backdrop-filter: blur(6px);
}
.sb-zoom-btn {
  width: 28px; height: 28px; display: flex; align-items: center; justify-content: center;
  background: none; border: none; color: var(--text-secondary, #787b86);
  font-size: 16px; cursor: pointer; border-radius: 4px; transition: color 0.12s, background 0.12s;
}
.sb-zoom-btn:hover { color: var(--text-primary, #d1d4dc); background: rgba(255,255,255,0.06); }
.sb-zoom-level {
  font-size: 10px; color: var(--text-secondary, #787b86); padding: 2px 0;
  user-select: none;
}
.sb-zoom-fit { font-size: 14px; }

/* Mobile responsive */
@media (max-width: 768px) {
  #strategyBuilderPanel { width: 100% !important; left: 0; max-width: 100vw; }
  #strategyBuilderPanel .sb-resize-handle { display: none; }
  .sb-palette { width: 120px; min-width: 100px; }
  .sb-param-panel { width: 140px; min-width: 120px; }
}
@media (max-width: 480px) {
  .sb-palette { width: 100px; min-width: 80px; }
  .sb-palette-node { font-size: 11px; padding: 4px 6px 4px 10px; }
  .sb-param-panel { display: none; }
}