:root{
  --primary:#0c6170;
  --primary-dark:#084854;
  --accent:#f0c341;
  --bg:#eef7f9;
  --white:#ffffff;
  --text:#203040;
  --muted:#61707c;
  --border:#d8e3e7;
  --shadow:0 12px 30px rgba(0,0,0,0.10);
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:12px;
}

*{ box-sizing:border-box; }

html, body{
  margin:0;
  padding:0;
  font-family:Arial, Helvetica, sans-serif;
  background:linear-gradient(135deg, #eef8fa 0%, #ddeef2 100%);
  color:var(--text);
}

.app-shell{
  max-width:1400px;
  margin:0 auto;
  padding:24px 18px 32px;
}

.hero{
  background:linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color:#fff;
  border-radius:var(--radius-lg);
  padding:30px 26px;
  box-shadow:var(--shadow);
  margin-bottom:22px;
}

.badge{
  display:inline-block;
  padding:8px 14px;
  border-radius:999px;
  background:rgba(255,255,255,0.14);
  border:1px solid rgba(255,255,255,0.2);
  font-size:14px;
  margin-bottom:12px;
}

.hero h1{
  margin:0 0 10px;
  font-size:clamp(28px, 4vw, 42px);
  line-height:1.15;
}

.hero p{
  margin:0;
  max-width:900px;
  line-height:1.6;
  font-size:16px;
}

.main-grid{
  display:grid;
  grid-template-columns:380px 1fr;
  gap:22px;
  align-items:start;
}

.card{
  background:var(--white);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow);
}

.sidebar{
  padding:22px;
}

.sidebar h2, .viewer-panel h2{
  margin-top:0;
  color:var(--primary-dark);
}

label{
  display:block;
  font-weight:700;
  margin:14px 0 8px;
}

input, select{
  width:100%;
  padding:13px 14px;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  font-size:16px;
  background:#fff;
}

input:focus, select:focus{
  outline:3px solid rgba(12,97,112,0.12);
  border-color:var(--primary);
}

.button-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:16px;
}

.btn{
  border:none;
  border-radius:var(--radius-sm);
  padding:12px 16px;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
}

.btn-primary{
  background:var(--primary);
  color:#fff;
}

.btn-secondary{
  background:var(--accent);
  color:#222;
}

.quick-section{
  margin-top:22px;
}

.quick-section h3{
  margin-bottom:10px;
  color:var(--primary-dark);
}

.quick-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

.quick-chip{
  border:none;
  background:#e7f4f7;
  color:var(--primary-dark);
  padding:10px 12px;
  border-radius:999px;
  cursor:pointer;
  font-size:14px;
}

.calibration-box{
  margin-top:22px;
  padding:16px;
  border:1px solid var(--border);
  border-radius:14px;
  background:#f7fbfc;
}

.calibration-box h3{
  margin:0 0 8px;
  color:var(--primary-dark);
}

.calibration-copy{
  margin:0 0 12px;
  color:var(--muted);
  line-height:1.5;
  font-size:14px;
}

.calibration-status{
  margin:12px 0 0;
  font-size:14px;
  color:var(--primary-dark);
  font-weight:700;
}

.note-box{
  margin-top:18px;
  padding:14px;
  border-left:5px solid var(--primary);
  background:#e9f5f7;
  border-radius:14px;
  line-height:1.5;
  font-size:14px;
}

.note-box.soft{
  background:#fff7d8;
  border-left-color:var(--accent);
}

.viewer-panel{
  padding:16px;
}

.viewer-topbar{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:16px;
  flex-wrap:wrap;
  padding:6px 6px 14px;
}

#viewerSubtitle{
  margin:6px 0 0;
  color:var(--muted);
  line-height:1.5;
}

.status-badge{
  background:#edf7f8;
  color:var(--primary-dark);
  padding:10px 14px;
  border-radius:999px;
  font-weight:700;
  font-size:14px;
}

iframe{
  width:100%;
  height:820px;
  border:none;
  border-radius:14px;
  background:#f5f5f5;
}

code{
  background:#f3f5f6;
  padding:2px 6px;
  border-radius:6px;
}

@media (max-width: 980px){
  .main-grid{
    grid-template-columns:1fr;
  }

  iframe{
    height:620px;
  }
}