/* ============================================================================
   PantheonHive — Visual Orchestration Canvas
   ============================================================================ */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-surface: #1a2235;
  --bg-hover: #243049;
  --border: #2d3a52;
  --border-active: #6366f1;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --cyan: #06b6d4;
  --purple: #a855f7;
  --pink: #ec4899;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* ---------- Layout ---------- */
.app {
  display: grid;
  grid-template-columns: 260px 1fr 320px;
  grid-template-rows: 56px 1fr 48px;
  height: 100vh;
}

/* ---------- Header ---------- */
.header {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
}
.header-brand svg { color: var(--accent); }
.header-actions { display: flex; gap: 8px; }

/* ---------- Sidebar (Node Palette) ---------- */
.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 16px 12px;
}
.sidebar-section { margin-bottom: 20px; }
.sidebar-section h3 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 10px;
  padding: 0 4px;
}

.palette-node {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius);
  cursor: grab;
  transition: background 0.15s, transform 0.15s;
  user-select: none;
  border: 1px solid transparent;
}
.palette-node:hover {
  background: var(--bg-hover);
  border-color: var(--border);
}
.palette-node:active {
  cursor: grabbing;
  transform: scale(0.97);
}
.palette-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.palette-icon.app    { background: rgba(99,102,241,0.15); color: var(--accent); }
.palette-icon.gemini { background: rgba(168,85,247,0.15); color: var(--purple); }
.palette-icon.trigger{ background: rgba(34,197,94,0.15);  color: var(--success); }
.palette-icon.cond   { background: rgba(245,158,11,0.15); color: var(--warning); }
.palette-icon.delay  { background: rgba(6,182,212,0.15);  color: var(--cyan); }

.palette-label { font-size: 13px; font-weight: 500; }
.palette-desc  { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* ---------- Canvas ---------- */
.canvas-container {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 50%, rgba(99,102,241,0.03) 0%, transparent 70%),
    var(--bg-primary);
}
.canvas-grid {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  opacity: 0.4;
}
.canvas {
  position: absolute;
  inset: 0;
  transform-origin: 0 0;
}

/* ---------- Canvas Nodes ---------- */
.canvas-node {
  position: absolute;
  min-width: 180px;
  background: var(--bg-surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  cursor: move;
  transition: border-color 0.15s, box-shadow 0.15s;
  z-index: 10;
}
.canvas-node:hover,
.canvas-node.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.2), var(--shadow);
}
.canvas-node-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  font-size: 13px;
  font-weight: 600;
}
.canvas-node-body {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--text-secondary);
}
.canvas-node-status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.canvas-node-status.idle    { background: var(--text-muted); }
.canvas-node-status.running { background: var(--warning); animation: pulse 1s infinite; }
.canvas-node-status.done    { background: var(--success); }
.canvas-node-status.error   { background: var(--danger); }

/* Connection ports */
.port {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border);
  border: 2px solid var(--bg-surface);
  cursor: crosshair;
  z-index: 20;
  transition: background 0.15s, transform 0.15s;
}
.port:hover { background: var(--accent); transform: scale(1.3); }
.port.input  { top: 50%; left: -6px; transform: translateY(-50%); }
.port.output { top: 50%; right: -6px; transform: translateY(-50%); }
.port.input:hover  { transform: translateY(-50%) scale(1.3); }
.port.output:hover { transform: translateY(-50%) scale(1.3); }

/* ---------- SVG Links ---------- */
.links-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
}
.links-layer path {
  fill: none;
  stroke-width: 2;
  pointer-events: stroke;
}
.link-required { stroke: var(--accent); }
.link-conditional { stroke: var(--warning); stroke-dasharray: 8 4; }
.link-temp { stroke: var(--text-muted); stroke-dasharray: 4 4; opacity: 0.6; }

/* ---------- Inspector Panel ---------- */
.inspector {
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  padding: 16px;
}
.inspector h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.inspector-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
  gap: 8px;
}
.field-group { margin-bottom: 14px; }
.field-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.field-input,
.field-select,
.field-textarea {
  width: 100%;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
}
.field-input:focus,
.field-select:focus,
.field-textarea:focus {
  border-color: var(--accent);
}
.field-textarea { resize: vertical; min-height: 60px; }

/* ---------- Status Bar ---------- */
.statusbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
}
.statusbar-left,
.statusbar-right { display: flex; align-items: center; gap: 16px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--bg-hover); border-color: var(--text-muted); }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { color: var(--danger); }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* ---------- Toast ---------- */
.toast-container {
  position: fixed;
  bottom: 64px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  font-size: 13px;
  box-shadow: var(--shadow);
  animation: slideIn 0.2s ease-out;
}
.toast.success { border-color: var(--success); }
.toast.error   { border-color: var(--danger); }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
}
.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 480px;
  max-height: 80vh;
  overflow-y: auto;
  padding: 24px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}
.modal h2 { font-size: 18px; margin-bottom: 16px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }

/* ---------- Animations ---------- */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
@keyframes slideIn {
  from { transform: translateX(40px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }