/* NovaSolver 1D — app shell styles. Brand: navy #001F3F / accent #007BFF. */
:root{
  --navy:#001F3F; --accent:#007BFF; --accent2:#00B4D8;
  --bg:#F8F9FA; --card:#fff; --text:#1a1a2e; --muted:#6c757d; --border:#dee2e6;
  --bar:56px; --hdr:48px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%}
body{font-family:'Noto Sans JP',system-ui,sans-serif;background:var(--bg);color:var(--text);
  display:flex;flex-direction:column;min-height:100vh}

/* header */
.ns1d-header{background:var(--navy);color:#fff;height:var(--hdr);flex:0 0 auto}
.hdr-inner{max-width:1600px;margin:0 auto;height:100%;display:flex;align-items:center;gap:10px;padding:0 16px}
.hdr-logo{color:#fff;text-decoration:none;font-weight:800;font-size:1rem;letter-spacing:.02em;
  white-space:nowrap;flex:0 0 auto}
.hdr-logo span{color:var(--accent2)}
.hdr-sep{color:rgba(255,255,255,.35)}
.hdr-title{font-weight:600;font-size:.95rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  margin:0;color:#fff;font-family:inherit}
.hdr-badge{background:rgba(0,180,216,.18);color:var(--accent2);border:1px solid rgba(0,180,216,.4);
  border-radius:10px;padding:1px 8px;font-size:.68rem;font-weight:700;flex:0 0 auto}
.hdr-back{margin-left:auto;color:rgba(255,255,255,.75);text-decoration:none;font-size:.82rem;flex:0 0 auto}
.hdr-back:hover{color:#fff}

/* toolbar */
.ns1d-bar{background:var(--card);border-bottom:1px solid var(--border);height:var(--bar);
  display:flex;align-items:center;gap:8px;padding:0 14px;flex:0 0 auto;overflow-x:auto}
.ns1d-bar button,.ns1d-bar .filebtn{background:#fff;border:1px solid var(--border);border-radius:7px;
  padding:7px 12px;font-size:.82rem;cursor:pointer;color:var(--text);white-space:nowrap;
  font-family:inherit;display:inline-flex;align-items:center;gap:6px}
.ns1d-bar button:hover,.ns1d-bar .filebtn:hover{border-color:var(--accent);color:var(--accent)}
.ns1d-bar .filebtn input{display:none}
.ns1d-bar select{padding:7px 10px;border:1px solid var(--border);border-radius:7px;font-size:.82rem;
  font-family:inherit;background:#fff}
.ns1d-bar .sep{width:1px;height:24px;background:var(--border);flex:0 0 auto}
.ns1d-bar .grow{flex:1 1 auto}
.privacy{font-size:.72rem;color:var(--muted);white-space:nowrap;flex:0 0 auto}
.privacy i{color:#2e9e5b}

/* layout — the editor is an app shell: it must own a fixed slice of the viewport,
   otherwise the long article below it starves the grid of height and the sheet collapses. */
.ns1d-main{flex:0 0 auto;display:grid;grid-template-columns:250px 1fr 300px;
  height:calc(100vh - var(--hdr) - var(--bar));min-height:560px}
.pane{background:var(--card);overflow-y:auto;padding:12px 14px}
.pane-left{border-right:1px solid var(--border)}
.pane-right{border-left:1px solid var(--border)}
.pane-h{font-size:.72rem;font-weight:700;color:var(--muted);text-transform:uppercase;
  letter-spacing:.09em;margin:4px 0 10px}
.pane-h:not(:first-child){margin-top:22px}

/* palette */
.palette{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.pal-item{background:#fff;border:1px solid var(--border);border-radius:9px;padding:8px 4px;
  cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:4px;font-family:inherit;
  font-size:.7rem;color:var(--text);transition:all .15s}
.pal-item:hover{border-color:var(--accent);background:#f5faff}
.pal-item.armed{border-color:var(--accent);background:#e8f3ff;box-shadow:0 0 0 2px rgba(0,123,255,.18)}
.pal-item.dragging{opacity:.45}
.sheet.dropping{background:#f0f7ff}
.pal-sym{width:44px;height:44px;stroke:var(--navy);stroke-width:2;fill:none;stroke-linecap:round}
.pal-sym .fillbody{fill:#fff}
.pal-sym .thick{stroke-width:3}
.pal-sym .wave{stroke-width:1.8;fill:none}
.hint{font-size:.72rem;color:var(--muted);line-height:1.6;margin:10px 0 0;
  background:#f1f5f9;border-radius:7px;padding:8px 10px}

/* params */
.pfield-head{font-weight:700;font-size:.85rem;margin-bottom:8px}
.pfield{display:flex;flex-direction:column;gap:3px;margin-bottom:9px}
.pfield span{font-size:.74rem;color:var(--muted)}
.pfield em{font-style:normal;font-family:'Roboto Mono',monospace}
.pfield input{padding:7px 9px;border:1px solid var(--border);border-radius:6px;font-size:.85rem;
  font-family:'Roboto Mono',monospace;width:100%}
.pfield input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(0,123,255,.15)}
.prow{display:flex;gap:6px;margin-top:12px}
.prow button{flex:1;padding:7px;border:1px solid var(--border);background:#fff;border-radius:6px;
  cursor:pointer;font-size:.76rem;font-family:inherit}
.prow button:hover{border-color:var(--accent);color:var(--accent)}
.prow .danger:hover{border-color:#dc3545;color:#dc3545}

/* sheet */
.sheet-wrap{position:relative;background:#fdfdfe;min-width:0;min-height:0}
.sheet{width:100%;height:100%;display:block;cursor:default;touch-action:none}
.sheet-help{position:absolute;left:12px;bottom:10px;background:rgba(255,255,255,.94);
  border:1px solid var(--border);border-radius:7px;padding:6px 11px;font-size:.7rem;color:var(--muted)}
.ns1d-comp .sym{stroke:var(--navy);stroke-width:2;fill:none;stroke-linecap:round}
.ns1d-comp .sym .fillbody{fill:#fff}
.ns1d-comp .sym .thick{stroke-width:3}
.ns1d-comp .sym .wave{stroke-width:1.6}
.ns1d-comp .pin{fill:#fff;stroke:var(--accent);stroke-width:2;cursor:crosshair}
.ns1d-comp .pin:hover{fill:var(--accent);r:7}
.ns1d-comp .val{font-size:11px;fill:var(--muted);text-anchor:middle;
  font-family:'Roboto Mono',monospace;pointer-events:none}
.ns1d-comp{cursor:move}
.ns1d-comp.sel .sym{stroke:var(--accent)}
.ns1d-comp.sel .sym .fillbody{fill:#eaf4ff}
.ns1d-wire .line{stroke:#334155;stroke-width:2;fill:none}
.ns1d-wire .hit{stroke:transparent;stroke-width:12;fill:none;cursor:pointer}
.ns1d-wire.sel .line{stroke:var(--accent);stroke-width:3}
.ns1d-tmpwire{stroke:var(--accent);stroke-width:2;stroke-dasharray:5 4;fill:none}
.ns1d-band{fill:rgba(0,123,255,.09);stroke:var(--accent);stroke-width:1;stroke-dasharray:4 3}
.ns1d-res .restxt{font-size:12px;font-weight:700;font-family:'Roboto Mono',monospace;
  paint-order:stroke;stroke:#fff;stroke-width:3px;stroke-linejoin:round}

/* results */
.results .msg{border-radius:7px;padding:8px 11px;font-size:.76rem;margin-bottom:8px;line-height:1.6}
.results .msg.error{background:#fdecec;color:#a92828;border:1px solid #f5c2c2}
.results .msg.warn{background:#fff8e6;color:#8a6100;border:1px solid #f0d69a}
.stat-row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:12px}
.stat{background:#f1f5f9;border-radius:9px;padding:10px;text-align:center}
.stat .sv{font-size:1.35rem;font-weight:800;color:var(--accent);font-family:'Roboto Mono',monospace}
.stat .sl{font-size:.66rem;color:var(--muted);margin-top:2px}
.restab{width:100%;border-collapse:collapse;font-size:.78rem}
.restab th{text-align:left;color:var(--muted);font-weight:600;padding:5px 0}
.restab td{text-align:right;font-family:'Roboto Mono',monospace;padding:5px 0}
.good{color:#2e9e5b;font-weight:700}
.bad{color:#dc3545;font-weight:700}
.trow{display:flex;gap:6px;margin-bottom:8px}
.trow label{flex:1;display:flex;flex-direction:column;font-size:.68rem;color:var(--muted);gap:2px}
.trow input{padding:5px 7px;border:1px solid var(--border);border-radius:5px;width:100%;
  font-family:'Roboto Mono',monospace;font-size:.78rem}
#plot{width:100%;display:block}
.muted{color:var(--muted)}
.small{font-size:.7rem}

/* verification */
.ns1d-verify{background:var(--card);border-top:1px solid var(--border);padding:26px 16px}
.vinner{max-width:1000px;margin:0 auto}
.ns1d-verify h2{font-size:1rem;margin:0 0 6px;display:flex;align-items:center;gap:8px}
.ns1d-verify h2 i{color:#2e9e5b}
.ns1d-verify h2 span{font-family:'Roboto Mono',monospace;font-size:.85rem}
.ns1d-verify p{font-size:.82rem;line-height:1.8;margin:0 0 14px}
.vtab{width:100%;border-collapse:collapse;font-size:.78rem}
.vtab th,.vtab td{border:1px solid var(--border);padding:7px 9px;text-align:left}
.vtab thead th{background:#f1f5f9;font-size:.72rem;color:var(--muted)}
.vtab td:nth-child(2),.vtab td:nth-child(3),.vtab td:nth-child(4){
  font-family:'Roboto Mono',monospace;text-align:right}
.vtab code{font-size:.7rem;color:var(--muted);background:#f6f8fa;padding:1px 5px;border-radius:4px}

/* doc */
.ns1d-doc{max-width:900px;margin:0 auto;padding:30px 20px 10px}
.ns1d-doc h2{font-size:1.15rem;border-bottom:2px solid var(--accent);padding-bottom:7px;margin-top:34px}
.ns1d-doc h3{font-size:.98rem;margin-top:26px;color:var(--navy)}
.ns1d-doc p{line-height:1.9;font-size:.9rem}
.ns1d-doc .eq{background:#f6f8fa;border-left:3px solid var(--accent);padding:10px 14px;
  font-family:'Roboto Mono',monospace;font-size:.86rem;border-radius:0 6px 6px 0}
.doctab{width:100%;border-collapse:collapse;font-size:.84rem;margin:12px 0}
.doctab th,.doctab td{border:1px solid var(--border);padding:7px 10px;text-align:left}
.doctab th{background:#f1f5f9}

/* footer */
.ns1d-footer{background:var(--navy);color:rgba(255,255,255,.62);padding:22px 16px;
  text-align:center;font-size:.78rem;margin-top:34px}
.ns1d-footer .flinks{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin:9px 0}
.ns1d-footer a{color:rgba(255,255,255,.78);text-decoration:none}
.ns1d-footer a:hover{color:#fff}
.ns1d-footer .cr{font-size:.66rem;color:rgba(255,255,255,.35)}

/* responsive: below 1100px the right pane drops under the sheet;
   below 820px the palette becomes a horizontal strip (schematic editing stays usable
   with touch drag, but small screens are primarily for viewing examples). */
@media(max-width:1100px){
  .ns1d-main{grid-template-columns:220px 1fr;grid-template-rows:minmax(400px,60vh) auto;
    height:auto;min-height:0}
  .pane-right{grid-column:1/-1;border-left:none;border-top:1px solid var(--border);max-height:none}
}
@media(max-width:820px){
  .ns1d-main{grid-template-columns:1fr;grid-template-rows:auto minmax(360px,52vh) auto;height:auto}
  .pane-left{border-right:none;border-bottom:1px solid var(--border);max-height:none}
  .palette{grid-template-columns:repeat(3,1fr)}
  .sheet-help{display:none}
  .privacy{display:none}
}