#page-assembly * { box-sizing: border-box; margin: 0; padding: 0; }
#page-assembly [hidden] { display: none !important; }
#page-assembly {
  --primary: #2f6fed;
  --danger: #d4380d;
  --border: #d9dee7;
  --text-2: #68758a;
  --panel: #ffffff;
  --bg: #eef1f6;
}
#page-assembly .topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 16px; background: var(--panel); border-bottom: 1px solid var(--border);
  flex: none;
}
#page-assembly .brand { display: flex; align-items: center; gap: 10px; }
#page-assembly .logo { font-weight: 800; font-size: 17px; color: var(--primary); }
#page-assembly .module-tag { font-size: 12px; color: var(--text-2); background: #eef2fb; padding: 2px 10px; border-radius: 999px; }
#page-assembly .topbar-actions { display: flex; gap: 8px; }
#page-assembly .btn {
  padding: 6px 14px; border: 1px solid var(--border); border-radius: 6px;
  background: #fff; cursor: pointer; font-size: 13px; color: inherit;
}
#page-assembly .btn:hover { border-color: var(--primary); color: var(--primary); }
#page-assembly .btn:disabled { opacity: 0.45; cursor: not-allowed; }
#page-assembly .btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
#page-assembly .btn-primary:hover { color: #fff; filter: brightness(1.08); }
#page-assembly .btn-small { padding: 4px 10px; font-size: 12px; }
#page-assembly .btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }
#page-assembly .layout { flex: 1; display: flex; min-height: 0; }
#page-assembly .sidebar {
  width: 280px; flex: none; background: var(--panel); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; overflow-y: auto;
}
#page-assembly .panel { padding: 12px 14px; border-bottom: 1px solid var(--border); }
#page-assembly .panel.grow { flex: 1; }
#page-assembly .panel h3 { font-size: 13px; margin-bottom: 8px; }
#page-assembly .hint-line { font-size: 12px; color: var(--text-2); margin-top: 6px; }
#page-assembly .add-profile select { width: 100%; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; margin-bottom: 8px; background: #fff; }
#page-assembly .add-row { display: flex; gap: 6px; }
#page-assembly .add-row input {
  flex: 1; min-width: 0; padding: 6px 8px; border: 1px solid var(--border);
  border-radius: 6px; font-size: 13px; outline: none;
}
#page-assembly .add-row input:focus { border-color: var(--primary); }
#page-assembly .lib-list { max-height: 200px; overflow-y: auto; }
#page-assembly .lib-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 5px 6px; border-radius: 4px; font-size: 12.5px;
}
#page-assembly .lib-item:hover { background: #f2f5fa; }
#page-assembly .lib-item .meta { color: var(--text-2); font-size: 11px; margin-left: 6px; }
#page-assembly .tree { list-style: none; }
#page-assembly .tree li {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 8px; border-radius: 6px; cursor: pointer; font-size: 12.5px;
}
#page-assembly .tree li:hover { background: #f2f5fa; }
#page-assembly .tree li.selected { background: #e3ecfd; color: var(--primary); font-weight: 600; }
#page-assembly .tree .kind {
  flex: none; font-size: 10px; padding: 1px 6px; border-radius: 999px;
  background: #eef1f5; color: var(--text-2);
}
#page-assembly .tree li .nm { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#page-assembly .tree .act { border: none; background: none; cursor: pointer; font-size: 14px; visibility: hidden; padding: 0 2px; }
#page-assembly .tree .act.cp { color: var(--primary); font-size: 13px; }
#page-assembly .tree .act.del { color: var(--danger); }
#page-assembly .tree li:hover .act { visibility: visible; }
#page-assembly .viewport-wrap { flex: 1; display: flex; flex-direction: column; min-width: 0; position: relative; }
#page-assembly .toolbar {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px; background: var(--panel); border-bottom: 1px solid var(--border);
  flex: none;
}
#page-assembly .toolbar .sep { width: 1px; height: 18px; background: var(--border); margin: 0 4px; }
#page-assembly .toolbar .chk { font-size: 12px; color: var(--text-2); display: flex; align-items: center; gap: 4px; cursor: pointer; }
#page-assembly .flex-spacer { flex: 1; }
#page-assembly .viewport { flex: 1; min-height: 0; position: relative; }
#page-assembly .viewport canvas { display: block; }
#page-assembly .viewport-hint {
  position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%);
  font-size: 11.5px; color: var(--text-2); background: rgba(255,255,255,0.85);
  padding: 3px 14px; border-radius: 999px; pointer-events: none;
}
#page-assembly .prop-panel {
  position: absolute; top: 52px; right: 12px; width: 230px;
  background: rgba(255,255,255,0.96); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: 0 6px 24px rgba(31,39,51,0.12); padding: 10px 12px;
}
#page-assembly .prop-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
#page-assembly .prop-head span { font-size: 13px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#page-assembly .prop-head .del { color: var(--danger); border: none; background: none; cursor: pointer; font-size: 16px; }
#page-assembly .prop-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
#page-assembly .prop-grid label { font-size: 11px; color: var(--text-2); display: flex; flex-direction: column; gap: 2px; }
#page-assembly .prop-grid input {
  width: 100%; padding: 4px 6px; border: 1px solid var(--border); border-radius: 5px;
  font-size: 12.5px; outline: none;
}
#page-assembly .prop-grid input:focus { border-color: var(--primary); }
#page-assembly .prop-actions { display: flex; gap: 6px; margin-top: 8px; }
#page-assembly .toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%);
  background: #1f2733; color: #fff; padding: 9px 20px; border-radius: 999px;
  font-size: 13px; box-shadow: 0 4px 16px rgba(0,0,0,0.25); z-index: 99;
}
#page-assembly .toast.err { background: var(--danger); }