:root{
  --bg: #0b1220;
  --card: #071024;
  --text: #e6eef8;
  --muted: #a9b7d9;
  --accent: #0f62fe;
  --surface-2: rgba(255,255,255,0.03);
  --danger: #ff7b7b;
  --good: #6fe7a6;
  --highlight: #ffcc00;
}

body.dark, body {
  margin:0;
  font-family:Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

.app{display:flex;height:100vh}

.sidenav{
  width:220px;
  background:var(--card);
  padding:20px;
  display:flex;
  flex-direction:column;
  border-right:1px solid rgba(255,255,255,0.03);
}

.brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.logo{width:40px;height:40px;border-radius:8px;background:var(--accent);color:white;display:flex;align-items:center;justify-content:center;font-weight:700}
.title{font-weight:600}
.nav-item{display:block;width:100%;text-align:left;padding:10px;border-radius:8px;border:none;background:transparent;margin-bottom:6px;color:var(--muted);cursor:pointer}
.nav-item.active{background:var(--surface-2);color:var(--text)}
.sidenav-footer{margin-top:auto}
.sidenav-footer .muted{font-size:12px;color:var(--muted)}

.main{flex:1;display:flex;flex-direction:column}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:18px 24px}
.breadcrumb{color:var(--muted)}
.top-actions{display:flex;gap:10px;align-items:center}
.search {
  padding: 10px 14px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.05);
  color: var(--text);
  font-size: 14px;
  transition: all 0.3s ease;
  outline: none;
  width: 220px;
}

.search::placeholder {
  color: var(--muted);
}

.search:focus {
  border-color: var(--accent);
  background: rgba(15,98,254,0.15);
  box-shadow: 0 0 6px var(--accent);
  width: 280px; /* expands on focus */
}

.content{padding:20px;overflow:auto}
.grid{display:grid;grid-template-columns:1fr 360px;gap:20px}
.card{background:var(--card);padding:16px;border-radius:12px;box-shadow:0 8px 24px rgba(2,6,23,0.5);border:1px solid rgba(255,255,255,0.02)}
.card h3{margin-top:0;color:var(--text)}
.form-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.form-row input{padding:8px;border-radius:8px;border:1px solid rgba(255,255,255,0.04);background:transparent;color:var(--text)}
.form-col label{display:flex;justify-content:space-between;align-items:center;padding:8px 0;color:var(--muted)}
.form-col input{padding:8px;border-radius:8px;border:1px solid rgba(255,255,255,0.04);background:transparent;color:var(--text)}
.materials{list-style:none;padding:0;margin-top:12px}
.mat-item{display:flex;justify-content:space-between;align-items:center;padding:8px;border-radius:8px;border:1px solid rgba(255,255,255,0.02);margin-bottom:8px}
.mat-item .muted{font-size:12px;color:var(--muted)}
.mat-item button{background:transparent;border:none;color:var(--accent);cursor:pointer}

.badge{display:inline-block;padding:4px 8px;border-radius:999px;font-size:12px;margin-left:8px}
.badge.over{background:rgba(255,123,123,0.12);color:var(--danger);border:1px solid rgba(255,123,123,0.18)}
.badge.under{background:rgba(111,231,167,0.08);color:var(--good);border:1px solid rgba(111,231,167,0.12)}
.badge.none{color:var(--muted);background:transparent;border:1px solid rgba(255,255,255,0.02)}

.actions{display:flex;gap:8px;margin-top:8px}
button{padding:8px 12px;border-radius:8px;cursor:pointer;background:rgba(255,255,255,0.04);color:var(--text);border:1px solid rgba(255,255,255,0.03);transition:all 0.2s ease}
button.primary{background:linear-gradient(90deg,var(--accent),#59a1ff);border:none;color:white}
button:hover{background:var(--highlight);color:#000}

.results pre{background:rgba(255,255,255,0.02);padding:12px;border-radius:8px;color:var(--muted);white-space:pre-wrap;max-height:260px;overflow:auto}
.footer{padding:12px 20px;color:var(--muted);text-align:right}

.charts{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}
.chart-card{flex:1;min-width:280px;background:transparent;padding:8px;border-radius:8px}

.tab {display:none;}
.tab.active {display:block;}

/* ===== Tab System ===== */
.tab {
  display: none;
}
.tab.active {
  display: block;
}

/* Make nav items look more like tabs */
.nav-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 10px;
  border-radius: 8px;
  border: none;
  background: transparent;
  margin-bottom: 6px;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}
.nav-item.active {
  background: var(--surface-2);
  color: var(--text);
  font-weight: 600;
}

/* ===== Search Highlight ===== */
mark {
  background: var(--highlight);
  color: #000;
  padding: 0 2px;
  border-radius: 3px;
}

#report_table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  background: var(--card);
  color: var(--text);
}

#report_table th, #report_table td {
  border: 1px solid rgba(255,255,255,0.1);
  padding: 6px 10px;
  text-align: left;
}

#report_table th {
  background: rgba(255,255,255,0.05);
  font-weight: 600;
}

#report_table td {
  min-width: 80px;
}

#report_table td:focus {
  outline: 2px solid var(--accent);
  background: rgba(15,98,254,0.15);
}


/* CSV Import enhancements */
#csv_file {color:var(--muted);}
#import_csv {background:linear-gradient(90deg, var(--good), #00cc88); color:#000; font-weight:600;}