/* ==========================================================
   SilverCode Labs — Robot Command Interface
   Design language: futuristic / industrial HUD, light mode,
   monochrome UI with a single interactive hero robot and a
   telemetry-styled diagnostics readout.
   ========================================================== */

:root{
  --bg: #DDE1E6;
  --bg-deep: #CFD4DB;
  --panel: #F6F7F8;
  --panel-strong: #FFFFFF;
  --ink: #14161A;
  --ink-soft: #565B62;
  --ink-faint: #8D929A;
  --line: #D3D7DC;
  --line-strong: #14161A;
  --accent: #2F63FF;
  --accent-dim: rgba(47,99,255,0.12);
  --good: #1FA971;
  --warn: #D6294A;
  --dark: #14161A;
  --dark-2: #23262C;

  --font-head: 'Space Grotesk', 'IBM Plex Sans', sans-serif;
  --font-body: 'Inter', 'IBM Plex Sans', sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', monospace;

  --radius: 2px;
  --ease: cubic-bezier(.22,.9,.3,1);
  --panel-shadow: 0 1px 2px rgba(20,22,26,0.04), 0 1px 0 rgba(20,22,26,0.02);
}

*{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin:0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width:100%; display:block; }
button{ font-family: inherit; }
a{ color: inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }

a:focus-visible, button:focus-visible, [tabindex]:focus-visible, input:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ================= LOADING SCREEN ================= */
.loading-screen{
  position: fixed; inset:0; z-index: 100;
  background: var(--bg);
  display:flex; align-items:center; justify-content:center;
  transition: opacity .5s var(--ease), visibility .5s var(--ease);
}
.loading-screen.hidden{ opacity:0; visibility:hidden; pointer-events:none; }
.loading-inner{ width:min(340px, 80vw); text-align:center; }
.loading-label{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--ink-soft);
  margin-bottom: 14px;
}
.loading-bar-track{
  height:3px; background: var(--line); border-radius:2px; overflow:hidden;
}
.loading-bar-fill{
  height:100%; width:0%; background: var(--ink); transition: width .18s linear;
}
.loading-pct{
  margin-top:10px; font-size:11px; letter-spacing:.06em; color: var(--ink-faint);
  font-family: var(--font-mono);
}

/* ================= APP SHELL ================= */
.app{
  position:relative;
  min-height:100vh;
  display:flex; flex-direction:column;
  opacity:0; transition: opacity .6s var(--ease);
}
.app.ready{ opacity:1; }

.bg-decoration{ position:fixed; inset:0; z-index:0; pointer-events:none; overflow:hidden; }
.bg-grid{
  position:absolute; inset:-1px;
  background-image:
    linear-gradient(to right, rgba(20,22,26,0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20,22,26,0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 55% 40%, black 40%, transparent 85%);
}
.bg-ring{
  position:absolute; border-radius:50%; border:1px solid rgba(20,22,26,0.06);
}
.bg-ring--a{ width:900px; height:900px; right:-260px; top:-320px; }
.bg-ring--b{ width:1300px; height:1300px; left:50%; top:20%; transform:translateX(-50%); border-color: rgba(20,22,26,0.04); }
.bg-line{ position:absolute; background: rgba(20,22,26,0.05); }
.bg-line--h{ width:100%; height:1px; top:14%; }
.bg-line--v{ width:1px; height:100%; left:50%; }

/* ================= HEADER ================= */
.header{
  position:relative; z-index:5;
  display:flex; align-items:center; justify-content:space-between;
  padding: 18px clamp(16px, 3vw, 40px);
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{
  width:38px; height:38px; display:flex; align-items:center; justify-content:center;
  border:1px solid var(--line-strong); color: var(--ink); background: var(--panel-strong);
}
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-name{
  font-family: var(--font-head); font-weight:600; font-size:16px;
  letter-spacing:.02em;
}
.brand-tagline{
  font-size:10.5px; letter-spacing:.06em; color: var(--ink-soft); text-transform:uppercase;
}
.header-right{ display:flex; align-items:center; gap:10px; }
.status-pill{
  display:flex; align-items:center; gap:8px;
  font-family: var(--font-mono);
  font-size:10.5px; letter-spacing:.06em; color: var(--ink-soft);
  border:1px solid var(--line); background: var(--panel-strong); box-shadow: var(--panel-shadow);
  padding:7px 12px;
}
.status-dot{
  width:6px; height:6px; border-radius:50%; background: var(--good);
  box-shadow: 0 0 0 3px rgba(31,169,113,0.16);
}
.icon-btn{
  width:36px; height:36px; display:flex; align-items:center; justify-content:center;
  border:1px solid var(--line); background: var(--panel-strong); color: var(--ink);
  box-shadow: var(--panel-shadow);
  cursor:pointer; transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.icon-btn:hover{ border-color: var(--line-strong); transform: translateY(-1px); }

.mobile-nav{
  position:absolute; top:100%; left:0; right:0; z-index:20;
  background: var(--panel-strong); border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  padding: 10px clamp(16px,3vw,40px) 18px;
  flex-direction:column; gap:2px;
  display:none;
}
.mobile-nav:not([hidden]){ display:flex; }
.mobile-nav a{
  padding:12px 4px; font-family: var(--font-head); font-size:13px; letter-spacing:.04em;
  border-bottom:1px solid var(--line);
}
.mobile-nav a:last-child{ border-bottom:none; }

/* ================= MAIN GRID ================= */
.main{
  position:relative; z-index:2;
  flex:1;
  display:grid;
  grid-template-columns: 280px 1fr 300px;
  gap: 16px;
  padding: 4px clamp(16px, 3vw, 40px) clamp(20px, 4vw, 40px);
  align-items:start;
}

.panel{
  background: var(--panel);
  border:1px solid var(--line);
  box-shadow: var(--panel-shadow);
}

.panel-heading{
  font-family: var(--font-head);
  font-size:11.5px; font-weight:600; letter-spacing:.13em;
  text-transform:uppercase; color: var(--ink);
  display:flex; align-items:baseline; justify-content:space-between;
  margin:0 0 14px;
}
.panel-heading-sub{ color: var(--ink-faint); font-weight:500; letter-spacing:.06em; font-family: var(--font-mono); font-size:10px; }

/* ============= LEFT: DEPLOYED UNITS ============= */
.units-panel{ padding: 20px 14px; display:flex; flex-direction:column; }
.units-list{ display:flex; flex-direction:column; gap:10px; }

.unit-card{
  display:block; width:100%; text-align:left;
  border:1px solid var(--line); background: var(--panel-strong);
  cursor:pointer; overflow:hidden;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .15s var(--ease);
}
.unit-card:hover{ border-color:#A7ACB4; transform: translateY(-1px); box-shadow: 0 4px 10px rgba(20,22,26,0.06); }
.unit-card.active{ border-color: var(--line-strong); box-shadow: 0 4px 14px rgba(20,22,26,0.10); }

.unit-card-top{
  position:relative;
  height:60px;
  display:flex; flex-direction:column; align-items:flex-start; justify-content:center;
  padding: 0 10px;
  overflow:hidden;
  cursor: pointer;
}
.unit-card-brand{
  display:flex; flex-direction:column; align-items:flex-start;
  pointer-events:none;
}
.unit-card-tag{
  position:absolute; top:6px; left:7px;
  font-family: var(--font-mono); font-size:9px; letter-spacing:.05em; color:#fff;
  background: rgba(0,0,0,0.32); padding:2px 5px; z-index:1;
}
.unit-card-live{
  position:absolute; top:6px; right:7px; z-index:1;
  display:flex; align-items:center; gap:4px;
  font-family: var(--font-mono); font-size:8.5px; letter-spacing:.06em; color:#fff;
  background: rgba(0,0,0,0.32); padding:2px 6px;
}
.unit-card-live::before{
  content:''; width:5px; height:5px; border-radius:50%; background:#37E28C;
}
.unit-card-live--beta::before{ background:#F2B033; }

.unit-card-body{ padding:10px 11px 11px; }
.unit-card-name-row{ display:flex; align-items:center; justify-content:space-between; gap:6px; }
.unit-card-name{
  font-family: var(--font-head); font-weight:600; font-size:12.5px; letter-spacing:.02em;
  color: var(--ink);
}
.unit-card-open{
  font-family: var(--font-mono); font-size:9.5px; letter-spacing:.04em; color: var(--ink-faint);
  display:flex; align-items:center; gap:2px; white-space:nowrap;
}
.unit-card-desc{
  margin-top:4px; font-size:11px; line-height:1.45; color: var(--ink-soft);
}

/* ============= CENTER COLUMN ============= */
.viewer-col{ display:flex; flex-direction:column; gap:16px; min-width:0; }

.viewer-panel{ padding: 0; overflow:hidden; }

.hud-strip{
  display:flex; align-items:center; gap:10px; flex-wrap:wrap;
  padding: 10px 18px;
  border-bottom:1px solid var(--line);
  font-family: var(--font-mono); font-size:10.5px; letter-spacing:.04em;
  color: var(--ink-soft);
}
.hud-key{ color: var(--ink-faint); margin-right:3px; }
.hud-sep{ color: var(--line); }
.hud-live{
  margin-left:auto; display:flex; align-items:center; gap:6px;
  color: var(--good); font-weight:600; letter-spacing:.08em;
}
.hud-live-dot{
  width:6px; height:6px; border-radius:50%; background: var(--good);
  animation: pulse-dot 1.8s ease-in-out infinite;
}
@keyframes pulse-dot{
  0%, 100%{ box-shadow: 0 0 0 0 rgba(31,169,113,0.35); }
  50%{ box-shadow: 0 0 0 4px rgba(31,169,113,0); }
}

.viewer-stage{
  position:relative;
  padding: 26px 20px 20px;
  display:flex; flex-direction:column; align-items:center;
}
.viewer-frame{
  position:relative;
  width:min(60%, 360px);
  aspect-ratio: 3 / 4.5;
  perspective: 1400px;
  cursor: grab;
  outline:none;
  touch-action: none;
}
.viewer-frame:active{ cursor:grabbing; }

.bracket{ position:absolute; width:20px; height:20px; border-color: rgba(20,22,26,0.28); z-index:2; }
.bracket--tl{ top:-10px; left:-10px; border-top:1.5px solid; border-left:1.5px solid; }
.bracket--tr{ top:-10px; right:-10px; border-top:1.5px solid; border-right:1.5px solid; }
.bracket--bl{ bottom:-10px; left:-10px; border-bottom:1.5px solid; border-left:1.5px solid; }
.bracket--br{ bottom:-10px; right:-10px; border-bottom:1.5px solid; border-right:1.5px solid; }

.robot-layer{
  position:absolute; inset:0;
  width:100%; height:100%; object-fit:contain; object-position:bottom center;
  opacity:0;
  transform-style: preserve-3d;
  will-change: transform;
  transition: opacity .25s ease;
  user-select:none; -webkit-user-drag:none;
}
.robot-layer.active{ opacity:1; }

.viewer-target-line{
  position:absolute; left:6%; right:6%; top:38%; height:1px;
  background: rgba(47,99,255,0.3);
  pointer-events:none;
}
.viewer-target-line::before, .viewer-target-line::after{
  content:''; position:absolute; top:-3px; width:1px; height:7px; background: rgba(47,99,255,0.5);
}
.viewer-target-line::before{ left:0; }
.viewer-target-line::after{ right:0; }

.viewer-reticle{
  position:absolute; left:50%; top:20%; width:120px; height:120px;
  transform:translate(-50%,-50%);
  border:1px solid rgba(20,22,26,0.14);
  border-radius:50%;
  opacity:0; transition: opacity .3s ease;
  pointer-events:none;
}
.viewer-frame:hover .viewer-reticle{ opacity:1; }
.viewer-reticle::before, .viewer-reticle::after{
  content:''; position:absolute; background: rgba(20,22,26,0.18);
}
.viewer-reticle::before{ left:50%; top:-6px; width:1px; height:12px; transform:translateX(-50%); }
.viewer-reticle::after{ top:50%; left:-6px; height:1px; width:12px; transform:translateY(-50%); }

.viewer-scanline{
  position:absolute; left:8%; right:8%; height:1px;
  background: linear-gradient(90deg, transparent, rgba(47,99,255,0.55), transparent);
  top:0; opacity:0; pointer-events:none;
}
.viewer-frame:hover .viewer-scanline{
  animation: scan 2.6s linear infinite;
  opacity:1;
}
@keyframes scan{
  0%{ top:6%; opacity:0; }
  10%{ opacity:.8; }
  90%{ opacity:.8; }
  100%{ top:92%; opacity:0; }
}

.rotation-slider-row{
  width:min(80%, 460px);
  display:flex; align-items:center; gap:10px;
  margin-top:18px;
}
.rotation-end{ font-family: var(--font-mono); font-size:9.5px; color: var(--ink-faint); }
.rotation-slider{
  flex:1; appearance:none; -webkit-appearance:none; height:2px; background: var(--line);
  outline:none; cursor:pointer;
}
.rotation-slider::-webkit-slider-thumb{
  appearance:none; -webkit-appearance:none;
  width:12px; height:12px; border-radius:50%;
  background: var(--panel-strong); border:1.5px solid var(--ink);
  cursor:pointer; transition: transform .15s var(--ease);
}
.rotation-slider::-webkit-slider-thumb:hover{ transform: scale(1.15); }
.rotation-slider::-moz-range-thumb{
  width:12px; height:12px; border-radius:50%; border:1.5px solid var(--ink);
  background: var(--panel-strong); cursor:pointer;
}

.viewer-tag{
  margin-top: 14px;
  font-family: var(--font-mono); font-size:10.5px; letter-spacing:.1em;
  color: var(--ink-soft);
}

.viewer-controls{
  margin-top:12px; display:flex; align-items:center; gap:14px;
}
.rotate-btn{
  width:30px; height:30px; border:1px solid var(--line); background: var(--panel-strong);
  color: var(--ink); display:flex; align-items:center; justify-content:center;
  cursor:pointer; transition: border-color .2s var(--ease), transform .15s var(--ease);
}
.rotate-btn:hover{ border-color: var(--line-strong); transform: scale(1.06); }
.rotate-hint{
  font-size:9.5px; letter-spacing:.12em; color: var(--ink-faint); font-family: var(--font-mono);
}

/* ============= SUB ROW: CLASS FILE / CAPABILITY / VIEW SELECT ============= */
.sub-row{
  display:grid; grid-template-columns: 1fr 1fr 1fr; gap:16px;
}
.sub-row .panel{ padding: 18px 16px; }

.stats-top{ display:flex; align-items:flex-start; gap:12px; margin-bottom:10px; }
.stats-index{
  font-family: var(--font-head); font-weight:700; font-size:34px; line-height:.9;
  letter-spacing:-.02em;
  font-variant-numeric: tabular-nums;
}
.stats-id{ padding-top:4px; }
.stats-name{
  font-family: var(--font-head); font-weight:600; font-size:13px; letter-spacing:.03em;
}
.stats-class{
  margin-top:4px; font-size:10px; letter-spacing:.1em; color: var(--ink-soft);
  font-family: var(--font-mono);
}
.stats-class span{ color: var(--ink); font-weight:600; }
.stats-description{
  font-size:12px; line-height:1.55; color: var(--ink-soft); margin:0;
}

.stat-bars{ display:flex; flex-direction:column; gap:12px; }
.stat-row-top{
  display:flex; justify-content:space-between; align-items:baseline;
  margin-bottom:5px;
}
.stat-label{
  font-family: var(--font-head); font-size:10px; letter-spacing:.1em; color: var(--ink-soft);
}
.stat-value{
  font-family: var(--font-mono); font-weight:500; font-size:11.5px;
  font-variant-numeric: tabular-nums;
}
.stat-track{ height:5px; background: var(--line); position:relative; overflow:hidden; }
.stat-fill{
  position:absolute; inset:0 100% 0 0; background: var(--ink);
  transition: right 1.1s var(--ease);
}

.view-select-grid{ display:grid; grid-template-columns: 1fr 1fr; gap:8px; margin-bottom:18px; }
.view-btn{
  padding:10px 6px; border:1px solid var(--line); background: var(--panel-strong);
  font-family: var(--font-head); font-size:10.5px; letter-spacing:.08em; color: var(--ink-soft);
  cursor:pointer; transition: all .18s var(--ease);
}
.view-btn:hover{ border-color:#A7ACB4; color: var(--ink); }
.view-btn.active{ background: var(--dark); border-color: var(--dark); color:#fff; }

.servo-heading{ margin-bottom:10px; }
.servo-load{ display:flex; align-items:flex-end; gap:2px; height:40px; }
.servo-bar{
  flex:1; background: var(--line); min-width:2px;
  transition: height .5s var(--ease), background .3s ease;
}
.servo-bar.active{ background: var(--accent); }

/* ============= RIGHT: DIAGNOSTICS ============= */
.diagnostics-panel{
  padding: 20px 16px 18px;
  display:flex; flex-direction:column;
  position: sticky; top: 4px;
}
.rec-tag{
  display:flex; align-items:center; gap:5px;
  font-family: var(--font-mono); font-size:10px; letter-spacing:.08em; color: var(--warn);
}
.rec-dot{
  width:6px; height:6px; border-radius:50%; background: var(--warn);
  animation: pulse-dot-red 1.4s ease-in-out infinite;
}
@keyframes pulse-dot-red{
  0%, 100%{ opacity:1; } 50%{ opacity:.35; }
}

.diag-grid{ display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-bottom:18px; }
.diag-tile{
  border:1px solid var(--line); background: var(--panel-strong); padding:10px 11px 9px;
}
.diag-label{ font-family: var(--font-head); font-size:9px; letter-spacing:.1em; color: var(--ink-faint); }
.diag-value{
  margin-top:4px; font-family: var(--font-mono); font-weight:600; font-size:19px; color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.diag-unit{ font-size:11px; color: var(--ink-faint); margin-left:2px; font-weight:500; }
.diag-bar{ margin-top:7px; height:3px; background: var(--line); overflow:hidden; }
.diag-bar-fill{ height:100%; background: var(--accent); width:40%; transition: width .6s var(--ease); }

.diag-block{ margin-bottom:18px; }
.diag-block-head{ display:flex; align-items:baseline; justify-content:space-between; margin-bottom:9px; }
.diag-block-title{ font-family: var(--font-head); font-size:10.5px; letter-spacing:.1em; color: var(--ink); }
.diag-nominal{ font-family: var(--font-mono); font-size:9.5px; letter-spacing:.06em; color: var(--good); }

.actuator-bars{ display:flex; align-items:flex-end; gap:2px; height:34px; border:1px solid var(--line); background: var(--panel-strong); padding:4px 6px; }
.actuator-bar{ flex:1; background: var(--ink-faint); min-width:1px; opacity:.55; transition: height .4s var(--ease); }

.gyro-trace{ width:100%; height:44px; display:block; border:1px solid var(--line); background: var(--panel-strong); }
.gyro-baseline{ stroke: var(--line); stroke-width:1; }
.gyro-line{ fill:none; stroke: var(--accent); stroke-width:1.4; stroke-linecap:round; stroke-linejoin:round; }

.joint-list{ display:flex; flex-direction:column; gap:7px; }
.joint-row{ display:grid; grid-template-columns: 46px 1fr 26px; align-items:center; gap:8px; }
.joint-label{ font-family: var(--font-mono); font-size:9.5px; color: var(--ink-soft); letter-spacing:.03em; }
.joint-track{ height:4px; background: var(--line); position:relative; overflow:hidden; }
.joint-fill{ position:absolute; inset:0 100% 0 0; background: var(--ink); transition: right .8s var(--ease); }
.joint-value{ font-family: var(--font-mono); font-size:9.5px; color: var(--ink-faint); text-align:right; font-variant-numeric: tabular-nums; }

.event-log-block{ flex:1; min-height:0; }
.event-log{
  border:1px solid var(--line); background: var(--panel-strong);
  padding: 8px 10px; height:118px; overflow-y:auto;
  display:flex; flex-direction:column; gap:5px;
}
.event-log li{
  font-family: var(--font-mono); font-size:10px; line-height:1.5; color: var(--ink-soft);
  display:flex; gap:7px;
  animation: log-in .3s var(--ease);
}
.event-log li .t{ color: var(--ink-faint); flex:none; }
@keyframes log-in{ from{ opacity:0; transform: translateY(-3px); } to{ opacity:1; transform:none; } }

.cta-button{
  margin-top:16px;
  display:flex; align-items:center; justify-content:space-between;
  background: var(--dark); color:#fff;
  border:1px solid var(--dark); box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06);
  font-family: var(--font-head); font-weight:600; font-size:12.5px; letter-spacing:.1em;
  padding: 15px 17px;
  transition: transform .18s var(--ease), background .18s var(--ease);
}
.cta-button:hover{ background:#000; transform: translateY(-2px); }
.cta-button:active{ transform: translateY(0); }

/* ================= REDUCED MOTION ================= */
@media (prefers-reduced-motion: reduce){
  *{ animation-duration: .001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
}

/* ================= RESPONSIVE ================= */
@media (max-width: 1320px){
  .main{ grid-template-columns: 260px 1fr 280px; }
  .sub-row{ grid-template-columns: 1fr 1fr; }
  .viewselect-panel{ grid-column: 1 / -1; }
  .view-select-grid{ grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 1080px){
  .main{ grid-template-columns: 1fr; }
  .diagnostics-panel{ position:static; }
  .units-list{ flex-direction:row; overflow-x:auto; padding-bottom:4px; }
  .unit-card{ flex:none; width:220px; }
  .sub-row{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px){
  .main{ padding: 4px 16px 28px; }
  .brand-tagline{ display:none; }
  .status-pill{ padding:9px; }
  .status-label{ display:none; }
  .viewer-frame{ width: 78%; }
  .sub-row{ grid-template-columns: 1fr; }
  .hud-strip{ font-size:9.5px; gap:7px; }
  .diag-grid{ grid-template-columns: 1fr 1fr; }
}