:root {
  --bg:       #050608;
  --surface:  #0d1117;
  --panel:    #161b22;
  --input:    #21262d;
  --border:   #30363d;
  --subtle:   #1c2128;
  --t1:       #e6edf3;
  --t2:       #8b949e;
  --t3:       #484f58;
  --accent:   #58a6ff;
  --accent2:  #a371f7;
  --pos:      #3fb950;
  --neg:      #f85149;
  --warn:     #d29922;
  --info:     #56d4dd;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--t1);
  padding: 16px;
  font-size: 13px;
  line-height: 1.45;
}
.app { max-width: 1500px; margin: 0 auto; }

header {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 14px; border-bottom: 1px solid var(--border); margin-bottom: 16px;
}
.hdr-left { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 38px; height: 38px; border-radius: 8px; background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 11px; color: #fff;
  box-shadow: 0 0 12px rgba(88,166,255,0.25);
}
header h1 { font-size: 15px; font-weight: 600; letter-spacing: -0.2px; }
header p  { font-size: 10px; color: var(--t2); margin-top: 2px; }
.badge-group { display: flex; gap: 6px; }
.badge {
  font-size: 9px; font-family: 'JetBrains Mono', monospace; font-weight: 600;
  background: rgba(88,166,255,0.08); color: var(--accent); border: 1px solid rgba(88,166,255,0.25);
  padding: 3px 8px; border-radius: 4px; text-transform: uppercase;
}
.badge.purp { background: rgba(163,113,247,0.08); color: var(--accent2); border-color: rgba(163,113,247,0.25); }
.badge.warn { background: rgba(210,153,34,0.08); color: var(--warn); border-color: rgba(210,153,34,0.25); }

.toolbar { display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap; align-items: center; }
button {
  background: var(--panel); color: var(--t1); border: 1px solid var(--border);
  padding: 7px 14px; border-radius: 6px; cursor: pointer;
  font-size: 11px; font-weight: 500; transition: all .15s;
  display: flex; align-items: center; gap: 6px; white-space: nowrap;
  font-family: 'Inter', sans-serif;
}
button:hover:not(:disabled) { background: var(--input); border-color: var(--t2); transform: translateY(-1px); }
button:disabled { opacity: .35; cursor: not-allowed; }
button.primary { background: linear-gradient(135deg, var(--accent), #1f6feb); color: #fff; border-color: transparent; }
button.primary:hover:not(:disabled) { box-shadow: 0 4px 12px rgba(47,129,247,0.3); }
button.success { background: rgba(63,185,80,.1); color: var(--pos); border-color: rgba(63,185,80,.2); }
button.danger  { background: rgba(248,81,73,.1); color: var(--neg); border-color: rgba(248,81,73,.2); }
button.warn { background: rgba(210,153,34,.1); color: var(--warn); border-color: rgba(210,153,34,.2); }
button.ghost { background: transparent; border-color: transparent; color: var(--t2); }
button.ghost:hover { color: var(--t1); background: var(--panel); }
input[type="file"] { display: none; }

.workspace { display: grid; grid-template-columns: 1fr 400px; gap: 14px; }
.left-col  { display: flex; flex-direction: column; gap: 12px; }

.viewport-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.vp-box {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  position: relative; overflow: hidden; display: flex; flex-direction: column;
}
.vp-header {
  padding: 6px 10px; background: var(--panel); border-bottom: 1px solid var(--border);
  font-size: 9px; color: var(--t2); text-transform: uppercase; font-weight: 600; letter-spacing: .6px;
  display: flex; justify-content: space-between; align-items: center;
}
.canvas-wrap {
  height: 240px; display: flex; align-items: center; justify-content: center; background: #000;
  position: relative; cursor: crosshair; user-select: none;
  touch-action: none;
}
.canvas-wrap.dragging { cursor: grabbing; }
.canvas-wrap.resizing { cursor: nesw-resize; }
#noSignal { color: var(--t3); font-size: 11px; text-align: center; padding: 40px; display: flex; flex-direction: column; align-items: center; gap: 8px; }
canvas { max-width: 100%; max-height: 100%; display: none; image-rendering: pixelated; }
.vp-label {
  position: absolute; bottom: 6px; right: 8px;
  font-size: 9px; font-family: 'JetBrains Mono', monospace;
  background: rgba(0,0,0,0.7); color: var(--t2); padding: 2px 6px; border-radius: 4px;
  pointer-events: none;
}

/* ROI Circle Overlay */
.roi-overlay {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 10;
}
.roi-circle {
  position: absolute; border: 2px dashed var(--accent);
  border-radius: 50%; pointer-events: auto; cursor: grab;
  box-shadow: 0 0 0 9999px rgba(0,0,0,0.55), inset 0 0 20px rgba(88,166,255,0.15);
  transition: box-shadow .2s;
}
.roi-circle:hover { box-shadow: 0 0 0 9999px rgba(0,0,0,0.5), inset 0 0 25px rgba(88,166,255,0.25); }
.roi-circle.dragging { cursor: grabbing; border-color: var(--pos); }
.roi-handle {
  position: absolute; width: 16px; height: 16px; background: var(--accent);
  border-radius: 50%; border: 2px solid var(--bg);
  pointer-events: auto; cursor: nesw-resize;
  bottom: -8px; right: -8px; z-index: 11;
}
.roi-handle:hover { background: var(--pos); transform: scale(1.2); }
.roi-info {
  position: absolute; top: 6px; left: 8px;
  font-size: 9px; font-family: 'JetBrains Mono', monospace;
  background: rgba(0,0,0,0.7); color: var(--accent);
  padding: 2px 6px; border-radius: 4px; pointer-events: none; z-index: 12;
}

.status-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; gap: 16px;
}
.laudo-wrap { flex: 1; }
.s-label  { font-size: 9px; color: var(--t2); text-transform: uppercase; letter-spacing: .6px; font-weight: 600; }
.s-result { font-family: 'JetBrains Mono', monospace; font-size: 18px; font-weight: 700; color: var(--t3); margin-top: 4px; }
.status-bar.pos .s-result { color: var(--neg); text-shadow: 0 0 20px rgba(248,81,73,0.25); }
.status-bar.neg .s-result { color: var(--pos); text-shadow: 0 0 20px rgba(63,185,80,0.25); }
.status-bar.ind .s-result { color: var(--warn); }

.score-gauge { display: flex; align-items: center; gap: 10px; width: 180px; }
.score-track { flex:1; height:6px; background:var(--panel); border-radius:3px; overflow:hidden; position: relative; }
.score-fill  { height:100%; width:0%; border-radius:3px; transition: width .6s cubic-bezier(.4,0,.2,1);
               background: linear-gradient(90deg,var(--pos) 0%,var(--warn) 45%,var(--neg) 100%); }
.score-num   { font-family:'JetBrains Mono',monospace; font-size:12px; font-weight:700; color:var(--t2); width:40px; text-align:right; }

.confidence-pill {
  font-family: 'JetBrains Mono', monospace; font-size: 10px; padding: 4px 10px; border-radius: 20px;
  background: var(--panel); border: 1px solid var(--border); color: var(--t2);
}

.prozone-alert {
  display: none;
  margin-top: 8px; padding: 8px 12px; border-radius: 6px;
  background: rgba(210,153,34,0.08); border: 1px solid rgba(210,153,34,0.25);
  color: var(--warn); font-size: 11px; font-weight: 500;
}
.prozone-alert.show { display: block; }

.sidebar { display:flex; flex-direction:column; gap:12px; }
.panel   { background:var(--surface); border:1px solid var(--border); border-radius:8px; overflow:hidden; }
.ph      { padding:10px 14px; border-bottom:1px solid var(--subtle); display:flex; justify-content:space-between; align-items:center; }
.pt      { font-size:10px; font-weight:600; color:var(--t2); text-transform:uppercase; letter-spacing:.6px; }
.pb      { padding:12px 14px; }

.metric-row { display:flex; justify-content:space-between; align-items:center; padding:5px 0; border-bottom:1px solid rgba(48,54,61,0.4); }
.metric-row:last-child { border-bottom:none; }
.metric-row label { font-size:11px; color:var(--t2); font-weight: 400; }
.m-val { font-family:'JetBrains Mono',monospace; font-size:11px; font-weight:600; color:var(--t3); }
.m-val.highlight { color:var(--t1); }
.m-val.pos { color: var(--pos); }
.m-val.neg { color: var(--neg); }
.m-val.warn { color: var(--warn); }

.label-btns { display:flex; gap:6px; margin-bottom:10px; }
.label-btns button { flex:1; justify-content:center; font-size:10px; padding:8px; }

#datasetStatus { font-size:11px; color:var(--t2); background:var(--panel); padding:8px; border-radius:6px; border:1px solid var(--border); margin-bottom:10px;}
#cntT { font-weight:700; color:var(--accent); }

.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 8px; }
.feature-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: 8px 10px;
}
.feature-card .fc-label { font-size: 9px; color: var(--t3); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 3px; }
.feature-card .fc-val { font-family: 'JetBrains Mono', monospace; font-size: 12px; font-weight: 600; color: var(--t1); }

.progress-mini { height: 3px; background: var(--panel); border-radius: 2px; margin-top: 6px; overflow: hidden; }
.progress-mini > div { height: 100%; border-radius: 2px; background: var(--accent); transition: width .4s ease; }

footer { margin-top:16px; text-align:center; font-size:9px; color:var(--t3); font-family:'JetBrains Mono',monospace; }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--t3); }

.algo-step {
  display: flex; align-items: center; gap: 8px; font-size: 10px; color: var(--t3);
  padding: 4px 0; border-bottom: 1px dashed var(--subtle);
}
.algo-step:last-child { border-bottom: none; }
.algo-step .step-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--t3); flex-shrink: 0; }
.algo-step.ok .step-dot { background: var(--pos); box-shadow: 0 0 6px var(--pos); }
.algo-step.warn .step-dot { background: var(--warn); }
.algo-step.active .step-dot { background: var(--accent); animation: pulse 1.5s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }

.roi-controls {
  display: flex; gap: 6px; margin-bottom: 8px;
}
.roi-controls button { font-size: 10px; padding: 5px 10px; }

@media (max-width: 768px) {
  .workspace { grid-template-columns: 1fr; }
  .viewport-grid { grid-template-columns: 1fr; }
}