@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;800&family=Inter:wght@400;500;600;700&display=swap');

* { box-sizing: border-box; }

.pe-app {
  --ink: #0B1E33;
  --ink2: #14304F;
  --ink3: #1D4066;
  --paper: #FBFAF6;
  --grid: #DCE6EE;
  --grid-major: #B9CCDC;
  --wall: #16202B;
  --red: #C0392B;
  --red-dark: #8C2A1F;
  --cyan: #5FA8D3;
  --text-light: #EAF2F8;
  --text-dim: #9FB6C9;
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--ink);
  color: var(--text-light);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 740px;
  width: 100%;
  position: relative;
  border: 1px solid #24405e;
}

.pe-topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  background: linear-gradient(180deg, var(--ink3), var(--ink2));
  border-bottom: 2px solid var(--cyan);
  flex-shrink: 0;
  flex-wrap: wrap;
  row-gap: 6px;
}
.pe-logo { display:flex; align-items:center; gap:8px; font-family:'JetBrains Mono', monospace; font-weight:800; letter-spacing:0.5px; font-size:13px; color:var(--text-light);}
.pe-logo .bolt { color: var(--red); font-size: 17px; }
.pe-topbar input[type=text] {
  background: rgba(255,255,255,0.07); border:1px solid #2f5375; color:var(--text-light);
  border-radius:6px; padding:6px 10px; font-family:'JetBrains Mono',monospace; font-size:12px; width:130px;
}
.pe-topbar select {
  background: var(--ink); border:1px solid #2f5375; color:var(--text-light);
  border-radius:6px; padding:6px 8px; font-family:'Inter',sans-serif; font-size:11.5px; cursor:pointer;
}
.pe-topbar input[type=text]::placeholder { color: var(--text-dim); }
.pe-btn {
  background: var(--ink); border:1px solid #2f5375; color: var(--text-light);
  padding:6px 11px; border-radius:6px; font-size:11.5px; cursor:pointer; font-family:'Inter',sans-serif; font-weight:600;
  display:flex; align-items:center; gap:6px; white-space:nowrap; transition: all .12s;
}
.pe-btn:hover { background: var(--ink3); border-color: var(--cyan); }
.pe-btn.primary { background: var(--red); border-color: var(--red-dark); }
.pe-btn.primary:hover { background: #d9483a; }
.pe-btn-help {
  width: 30px; min-width: 30px; justify-content: center; padding: 6px; font-size: 13px; font-weight: 700;
}
.pe-spacer { flex:1; }
.pe-zoomgroup { display:flex; align-items:center; gap:2px; background: var(--ink); border:1px solid #2f5375; border-radius:6px; padding:2px; }
.pe-zoomgroup button { background:transparent; border:none; color:var(--text-light); width:24px; height:24px; border-radius:4px; cursor:pointer; font-size:13px; }
.pe-zoomgroup button:hover { background: var(--ink3); }
.pe-zoomgroup span { font-family:'JetBrains Mono',monospace; font-size:11px; color:var(--text-dim); width:42px; text-align:center; }

.pe-body { flex:1; display:flex; min-height:0; }

.pe-rail {
  width: 62px; background: var(--ink2); border-right:1px solid #2f5375;
  display:flex; flex-direction:column; align-items:center; padding:10px 0; gap:4px; flex-shrink:0; position:relative;
}
.pe-tool {
  width:42px; height:38px; border-radius:9px; border:1px solid transparent; background:transparent;
  color: var(--text-dim); display:flex; align-items:center; justify-content:center; cursor:pointer; font-size:17px;
  transition: all .12s;
}
.pe-tool:hover { background: rgba(255,255,255,0.06); color: var(--text-light); }
.pe-tool.active { background: var(--red); color:#fff; border-color: var(--red-dark); }
.pe-tool-label { font-size:7.5px; color:var(--text-dim); margin-top:-2px; margin-bottom:3px; font-family:'JetBrains Mono',monospace;}

.pe-canvaswrap {
  flex:1; position:relative; overflow:auto; background: #dbe4ea;
  display:flex; align-items:flex-start; justify-content:flex-start;
}
.pe-canvaswrap canvas { display:block; cursor: crosshair; background: var(--paper); }

.pe-panel {
  width: 270px; background: var(--ink2); border-left:1px solid #2f5375; flex-shrink:0;
  display:flex; flex-direction:column;
}
.pe-app.panel-hidden .pe-panel { display:none; }
.pe-tabs { display:flex; border-bottom:1px solid #2f5375; }
.pe-tab { flex:1; padding:8px 2px; text-align:center; font-size:10px; font-weight:600; color:var(--text-dim); cursor:pointer; border-bottom:2px solid transparent; }
.pe-tab.active { color: var(--text-light); border-color: var(--red); }
.pe-tabcontent { flex:1; overflow-y:auto; padding:12px; font-size:12px; }

.pe-cat-header { font-family:'JetBrains Mono',monospace; font-size:10px; color:var(--cyan); text-transform:uppercase; letter-spacing:0.5px; margin:10px 0 4px; padding-top:6px; border-top:1px solid #2f5375; }
.pe-cat-header:first-child { margin-top:0; border-top:none; padding-top:0; }
.pe-legend-item { display:flex; align-items:center; gap:8px; padding:5px 4px; border-radius:6px; cursor:pointer; }
.pe-legend-item:hover { background: rgba(255,255,255,0.05); }
.pe-legend-item.active { background: rgba(192,57,43,0.25); outline:1px solid var(--red); }
.pe-legend-icon { width:26px; height:26px; flex-shrink:0; }
.pe-legend-name { font-size:10.5px; color: var(--text-light); line-height:1.25; }

.pe-table { width:100%; border-collapse:collapse; font-family:'JetBrains Mono',monospace; font-size:10.5px; }
.pe-table th { background: var(--ink3); color: var(--cyan); padding:5px 4px; text-align:left; }
.pe-table td { padding:5px 4px; border-bottom:1px solid #2f5375; color: var(--text-light); }
.pe-table-note { color: var(--text-dim); font-size:10px; margin-top:8px; line-height:1.5; }

.pe-project-item { display:flex; align-items:center; justify-content:space-between; padding:7px 8px; border-radius:6px; background: rgba(255,255,255,0.04); margin-bottom:6px; cursor:pointer; }
.pe-project-item span { font-size:11.5px; font-family:'JetBrains Mono',monospace; }
.pe-project-item button { background:none; border:none; color:var(--text-dim); cursor:pointer; font-size:14px; padding:2px 5px; }
.pe-project-item button:hover { color: var(--red); }
.pe-empty { color: var(--text-dim); font-size:11.5px; text-align:center; padding:20px 6px; line-height:1.6; }

.pe-mat-row { display:flex; justify-content:space-between; padding:4px 2px; font-size:11px; border-bottom:1px dashed #2f5375; }
.pe-mat-row b { color:var(--text-light); }
.pe-mat-total { display:flex; justify-content:space-between; padding:8px 2px 2px; font-size:12px; font-weight:700; color:var(--cyan); }
.pe-circuit-chip { display:flex; align-items:center; gap:6px; padding:5px 2px; font-size:11px; }
.pe-swatch { width:12px; height:12px; border-radius:50%; flex-shrink:0; }
.pe-form-row { display:flex; flex-direction:column; gap:4px; margin-bottom:10px; }
.pe-form-row label { font-size:10px; color:var(--text-dim); text-transform:uppercase; letter-spacing:0.4px; }
.pe-form-row input, .pe-form-row select {
  background: rgba(255,255,255,0.07); border:1px solid #2f5375; color:var(--text-light);
  border-radius:6px; padding:7px 9px; font-family:'JetBrains Mono',monospace; font-size:11px;
}
.pe-form-row textarea {
  background: rgba(255,255,255,0.07); border:1px solid #2f5375; color:var(--text-light);
  border-radius:6px; padding:7px 9px; font-family:'JetBrains Mono',monospace; font-size:11px;
  min-height:54px; resize:vertical;
}
.pe-range-row { display:flex; align-items:center; gap:8px; }
.pe-range-row input[type=range] { flex:1; }
.pe-range-row span { width:46px; text-align:right; font-family:'JetBrains Mono',monospace; font-size:10px; color:var(--cyan); }
.pe-note-card { background: rgba(255,255,255,0.04); border:1px solid #2f5375; border-radius:8px; padding:8px 10px; line-height:1.5; color:var(--text-dim); font-size:10.5px; }

.pe-status { padding:6px 14px; background: var(--ink2); border-top:1px solid #2f5375; font-size:10.5px; color: var(--text-dim); font-family:'JetBrains Mono',monospace; flex-shrink:0; }
.pe-status b { color: var(--cyan); }

.pe-flyout {
  position:absolute; left:66px; top:10px; background: var(--ink2); border:1px solid var(--cyan);
  border-radius:10px; padding:10px; width:250px; z-index:20; max-height:520px; overflow-y:auto;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.pe-flyout-chips { display:flex; flex-wrap:wrap; gap:4px; margin-bottom:8px; }
.pe-chip { font-size:9.5px; padding:4px 8px; border-radius:12px; background: var(--ink); border:1px solid #2f5375; color:var(--text-dim); cursor:pointer; }
.pe-chip.active { background: var(--red); color:#fff; border-color:var(--red-dark); }
.pe-flyout-grid { display:grid; grid-template-columns: repeat(3,1fr); gap:4px; }
.pe-flyout .pe-legend-item { flex-direction:column; text-align:center; gap:3px; }
.pe-flyout .pe-legend-name { font-size:8.5px; }

.pe-editor {
  position:absolute; z-index:30; background: var(--ink); border:1px solid var(--red);
  border-radius:6px; padding:4px; display:none; box-shadow: 0 6px 18px rgba(0,0,0,0.5);
}
.pe-editor input {
  background: rgba(255,255,255,0.08); border:1px solid #2f5375; color:#fff; border-radius:4px;
  padding:5px 7px; font-family:'JetBrains Mono',monospace; font-size:11px; width:150px;
}
.pe-editor .pe-editor-actions { display:flex; gap:4px; margin-top:4px; }
.pe-editor button { flex:1; font-size:10px; padding:4px; border-radius:4px; border:none; cursor:pointer; }
.pe-editor .ok { background: var(--red); color:#fff; }
.pe-editor .cancel { background: #33475c; color:#cfe0ec; }

.pe-breaker-modal {
  position:absolute; z-index:35; background: var(--ink2); border:1px solid var(--cyan);
  border-radius:8px; padding:8px; width:260px; display:none; box-shadow: 0 8px 24px rgba(0,0,0,0.45);
}
.pe-breaker-modal h4 { margin:0 0 8px; font-size:11px; color:var(--cyan); font-family:'JetBrains Mono', monospace; }
.pe-breaker-modal .row { margin-bottom:7px; }
.pe-breaker-modal label { display:block; font-size:9.5px; color:var(--text-dim); margin-bottom:3px; }
.pe-breaker-modal input {
  width:100%; background: rgba(255,255,255,0.08); border:1px solid #2f5375; color:#fff; border-radius:4px;
  padding:5px 7px; font-family:'JetBrains Mono', monospace; font-size:10.5px;
}
.pe-breaker-inline { display:flex; align-items:center; gap:6px; }
.pe-breaker-inline input[type=checkbox] { width:auto; }
.pe-breaker-inline span { font-size:10px; color:var(--text-dim); }
.pe-breaker-list { max-height:180px; overflow-y:auto; border:1px dashed #2f5375; border-radius:6px; padding:6px; }
.pe-breaker-item { display:flex; align-items:center; gap:6px; margin-bottom:5px; }
.pe-breaker-item span { width:30px; font-size:9.5px; color:var(--text-dim); }
.pe-breaker-item input { flex:1; }
.pe-breaker-actions { display:flex; gap:6px; margin-top:8px; }
.pe-breaker-actions button { flex:1; border:none; border-radius:4px; padding:5px; font-size:10px; cursor:pointer; }
.pe-breaker-actions .ok { background: var(--red); color:#fff; }
.pe-breaker-actions .cancel { background:#33475c; color:#cfe0ec; }

.pe-toast {
  position:absolute; bottom:44px; left:50%; transform: translateX(-50%);
  background: var(--ink3); border:1px solid var(--cyan); color:#fff; padding:8px 16px; border-radius:20px;
  font-size:12px; z-index:40; opacity:0; pointer-events:none; transition: opacity .25s;
}
.pe-toast.show { opacity:1; }
.pe-help-modal {
  position:absolute; inset:0; background: rgba(3, 8, 15, 0.68); display:none; align-items:center; justify-content:center;
  padding:20px; z-index:60;
}
.pe-help-modal.open { display:flex; }
.pe-help-modal-card {
  width:min(760px, 100%); max-height:80vh; overflow:auto; background: var(--ink2); border:1px solid var(--cyan);
  border-radius:12px; box-shadow: 0 12px 30px rgba(0,0,0,0.35); padding:16px 18px; color:var(--text-light);
}
.pe-help-modal-head {
  display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:10px;
}
.pe-help-modal-head h3 { margin:0; font-size:14px; color:var(--cyan); }
.pe-help-close {
  background: transparent; border:none; color:var(--text-light); cursor:pointer; font-size:16px;
}
.pe-help-modal-body {
  display:grid; gap:10px;
}
.pe-help-step {
  background: rgba(255,255,255,0.05); border:1px solid #2f5375; border-radius:8px; padding:10px 11px;
}
.pe-help-step h4 {
  margin:0 0 5px; font-size:12px; color:var(--cyan);
}
.pe-help-step p {
  margin:0; font-size:11.5px; line-height:1.6; color:var(--text-light);
}
.page-shell {
  max-width: 860px;
  margin: 40px auto;
  padding: 32px;
  background: #ffffff;
  color: #14304f;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.page-shell h1 {
  margin-top: 0;
  font-size: 1.8rem;
}

.page-shell p {
  line-height: 1.7;
}

body {
  margin: 0;
  background: #f3f7fb;
  color: #14304f;
  font-family: 'Inter', system-ui, sans-serif;
}

a {
  color: #0f5f9c;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.app-footer {
  max-width: 1200px;
  margin: 16px auto 28px;
  padding: 12px 16px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 18px;
  font-size: 0.95rem;
  color: #14304f;
}

.page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin: 0 auto 20px;
  max-width: 860px;
  padding: 0 32px;
}

.page-nav a {
  font-weight: 600;
}

@media (max-width: 900px) {
  .pe-app {
    height: auto;
    min-height: 100vh;
  }

  .pe-body {
    flex-direction: column;
  }

  .pe-panel {
    width: 100%;
    border-left: none;
    border-top: 1px solid #2f5375;
  }

  .pe-topbar {
    padding: 10px;
  }
}