:root{
  --navy:#0a2342;
  --navy-light:#123a6b;
  --panel:#eef2f6;
  --panel-2:#f3f6f9;
  --ink:#1b2a3d;
  --muted:#5c6f88;
  --red:#e63946;
  --grid:#c6ced8;
  --line:#0a2342;
  --cyan:#0f9d8e;
  --mono: ui-monospace, 'Cascadia Code', 'SFMono-Regular', Consolas, 'Courier New', monospace;
  --sans: 'Segoe UI', Arial, sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box;font-family:var(--sans);max-width:100%;}

html, body{background:#111a2b;overflow-x:hidden;width:100%;}

.sw-window{width:100%;min-height:100vh;background:var(--panel);display:flex;flex-direction:column;overflow-x:hidden;}

/* ---------- TOP BAR ---------- */
.top{
  min-height:50px;
  background:var(--navy);
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;
  gap:6px;
  padding:8px 14px;color:#fff;font-size:13px;flex-shrink:0;
}
.logo{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px;}
.logo .mark{
  width:24px;height:24px;border-radius:5px;
  background:linear-gradient(135deg,var(--red),#a4222c);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;flex-shrink:0;
}
.logo small{font-weight:400;opacity:.65;font-size:11px;margin-left:6px;}
.menus{opacity:.75;font-family:var(--mono);font-size:11.5px;}

.tabs{display:flex;gap:2px;}
.tabs .tab{
  font-family:var(--mono);font-size:11.5px;color:#c9d6ea;
  background:transparent;border:1px solid transparent;
  padding:6px 14px;border-radius:4px;cursor:pointer;
}
.tabs .tab.active{background:var(--red);color:#fff;}
.tabs .tab:not(.active):hover{color:#fff;}

/* ---------- RIBBON ---------- */
.ribbon{
  display:flex;gap:4px;padding:8px 16px;
  background:var(--navy-light);flex-shrink:0;
  overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.ribbon .tool{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  min-width:52px;padding:6px 8px;border-radius:5px;flex-shrink:0;
  font-family:var(--mono);font-size:9.5px;color:#c9d6ea;
  border:1px solid transparent;
}
.ribbon .tool span{font-size:15px;}
.ribbon .tool.on{border-color:var(--red);background:rgba(230,57,70,.15);color:#fff;}
.ribbon .sep{width:1px;background:rgba(255,255,255,.15);margin:2px 8px;flex-shrink:0;}

/* ---------- MAIN LAYOUT ---------- */
.main{display:grid;grid-template-columns:230px 1fr 260px;flex:1;min-height:0;}

.left{background:var(--panel-2);border-right:1px solid var(--grid);padding:18px;overflow:auto;min-width:0;}
.left h3{font-size:11px;letter-spacing:.5px;text-transform:uppercase;color:var(--muted);margin-bottom:12px;}
#tree, #treeMatlab{list-style:none;font-family:var(--mono);font-size:13px;color:var(--ink);}
#tree li, #treeMatlab li{padding:5px 0;border-bottom:1px dashed var(--grid);word-break:break-word;}
#tree li.root, #treeMatlab li.root{font-weight:600;border-bottom:none;}
.mat{margin-top:20px;padding-top:14px;border-top:1px solid var(--grid);font-family:var(--mono);font-size:11.5px;color:var(--muted);display:flex;flex-direction:column;gap:2px;}
.mat b{font-size:10px;text-transform:uppercase;letter-spacing:.5px;color:var(--navy);margin-top:8px;}
.mat span{color:var(--ink);}

.center{background:#fff;display:flex;flex-direction:column;align-items:center;padding:20px;overflow:auto;min-width:0;}
.viewport{
  position:relative;width:100%;max-width:460px;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px) 0 0/24px 24px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0/24px 24px,
    #fbfcfe;
  border:1px solid var(--grid);border-radius:4px;
}
.viewport svg{width:100%;height:auto;display:block;}

.draw{
  fill:none;stroke:var(--navy);stroke-width:1.8;
  stroke-dasharray:900;stroke-dashoffset:900;
  transition:none;
}
.draw.on{animation:drawline 1.4s ease forwards;}
@keyframes drawline{to{stroke-dashoffset:0;}}

#holes circle{fill:var(--red);stroke:none;opacity:0;}
#holes.on circle{animation:popin .3s ease forwards;}
#holes.on circle:nth-child(2){animation-delay:.06s;}
#holes.on circle:nth-child(3){animation-delay:.12s;}
#holes.on circle:nth-child(4){animation-delay:.18s;}
#holes.on circle:nth-child(5){animation-delay:.24s;}
#holes.on circle:nth-child(6){animation-delay:.30s;}
#holes.on circle:nth-child(7){animation-delay:.36s;}
#holes.on circle:nth-child(8){animation-delay:.42s;}
@keyframes popin{to{opacity:1;}}

#sideView path{fill:#eef2f6;}
.hidden-line{stroke:var(--muted);stroke-width:1;stroke-dasharray:2 3;}

.dimgroup{opacity:0;transition:opacity .6s ease;}
.dimgroup.on{opacity:1;}
.dimline{stroke:var(--red);stroke-width:1;}
.dimline.light{stroke:var(--muted);}
.dimtext{font-family:var(--mono);font-size:10px;fill:var(--muted);}

.titleblock{
  position:absolute;bottom:10px;right:10px;
  background:rgba(255,255,255,.92);border:1px solid var(--grid);
  font-family:var(--mono);font-size:9px;color:var(--muted);
  padding:7px 9px;line-height:1.6;border-radius:3px;
}
.titleblock b{color:var(--navy);}

.progress{
  width:100%;max-width:460px;height:8px;
  background:var(--grid);margin-top:16px;border-radius:20px;overflow:hidden;
}
#bar, #barMatlab{width:0%;height:100%;background:linear-gradient(90deg,var(--red),#ff6b74);transition:.4s;}

#status, #statusMatlab{margin-top:10px;font-family:var(--mono);font-weight:600;font-size:12px;color:var(--navy);}

.right{background:var(--panel-2);border-left:1px solid var(--grid);padding:18px;display:flex;flex-direction:column;min-height:0;min-width:0;}
.right h3{font-size:11px;letter-spacing:.5px;text-transform:uppercase;color:var(--muted);margin-bottom:10px;}
.props{font-family:var(--mono);font-size:11.5px;margin-bottom:18px;}
.props .row{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px dashed var(--grid);color:var(--ink);gap:8px;}
.props .row span:last-child{color:var(--cyan);font-weight:600;text-align:right;}

#terminal, #terminalMatlab{
  background:#0b1220;color:#3ddc84;
  flex:1;min-height:180px;overflow:auto;
  padding:12px;font-family:var(--mono);font-size:12px;line-height:1.6;
  border-radius:6px;
}

.plot-line{
  fill:none;stroke:#f2a541;stroke-width:1.8;
  stroke-dasharray:900;stroke-dashoffset:900;
}
.plot-line.on{animation:drawline 2.2s ease forwards;}

/* ---------- TRABAJOS REALIZADOS (portfolio) ---------- */
.portfolio{
  background:#0c1729;
  padding:48px 24px 60px;
  text-align:center;
}
.portfolio h2{
  color:#fff;font-family:var(--mono);font-size:22px;letter-spacing:.5px;
  margin-bottom:8px;
}
.portfolio-sub{
  color:var(--muted);font-family:var(--mono);font-size:12.5px;
  margin-bottom:32px;
}
.portfolio-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:18px;
  max-width:1180px;
  margin:0 auto;
}
.portfolio-item{
  position:relative;
  border-radius:8px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.08);
  background:#0f1e33;
  aspect-ratio:4/3;
}
.portfolio-item img{
  width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .35s ease;
}
.portfolio-item:hover img{transform:scale(1.06);}
.portfolio-item figcaption{
  position:absolute;left:0;right:0;bottom:0;
  background:linear-gradient(180deg, transparent, rgba(0,0,0,.85));
  color:#fff;font-family:var(--mono);font-size:10.5px;
  padding:18px 10px 8px;text-align:left;
}
.portfolio-item-wide{
  grid-column:span 4;
  aspect-ratio:auto;
}
.portfolio-item-wide img{
  object-fit:contain;
  background:#0f1e33;
  max-height:900px;
}

@media(max-width:900px){
  .portfolio-grid{grid-template-columns:repeat(2, 1fr);}
  .portfolio-item-wide{grid-column:span 2;}
}
@media(max-width:520px){
  .portfolio-grid{grid-template-columns:1fr;}
  .portfolio-item-wide{grid-column:span 1;aspect-ratio:auto;}
  .portfolio-item-wide img{width:100%;height:auto;max-height:none;object-fit:contain;}
  .portfolio{padding:36px 16px 44px;}
  .portfolio h2{font-size:18px;}
}

/* ---------- MOBILE (demo window) ---------- */
@media(max-width:860px){
  .main{grid-template-columns:1fr;}
  .left,.right{border:none;border-top:1px solid var(--grid);}
  .sw-window{height:auto;}
}
@media(max-width:600px){
  .top{padding:8px 10px;}
  .logo{font-size:13px;}
  .logo small{display:none;}
  .menus{display:none;}
  .tabs .tab{padding:6px 10px;font-size:10.5px;}
  .ribbon .tool{min-width:44px;font-size:8.5px;padding:5px 6px;}
  .ribbon .tool span{font-size:13px;}
  .center{padding:12px;}
  .left,.right{padding:14px;}
  #terminal, #terminalMatlab{min-height:130px;}
}