:root{
  --phage-green: #10b981;
  --phage-green-dark: #059669;
  --ink: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --bg: #f9fafb;
  --shadow: 0 10px 25px rgba(17, 24, 39, 0.08);
  --radius: 18px;
}

.pfu-card{
  max-width: 860px;
  margin: 1.5rem auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  background: #fff;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  color: var(--ink);
}

.pfu-header{
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(16,185,129,0.16), rgba(16,185,129,0.04));
}

.pfu-title{
  display:flex;
  gap: 12px;
  align-items:flex-start;
}

.pfu-emoji{ font-size: 22px; }

.pfu-header h2{
  margin: 0;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.pfu-header p{
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.pfu-badges{
  display:flex;
  gap: 8px;
  flex-wrap:wrap;
  margin-top: 12px;
}

.pfu-badge{
  font-size: 12px;
  font-weight: 900;
  border-radius: 999px;
  padding: 6px 10px;
  border: 1px solid rgba(16,185,129,0.25);
  color: #065f46;
  background: rgba(16,185,129,0.12);
}

.pfu-badge-soft{
  color: var(--muted);
  background: #fff;
  border: 1px solid var(--border);
}

.pfu-body{
  padding: 16px 18px 18px;
}

.pfu-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 720px){
  .pfu-grid{ grid-template-columns: 1fr; }
}

.pfu-field label{
  display:block;
  font-size: 13px;
  font-weight: 900;
  margin-bottom: 6px;
}

.pfu-field input{
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
  outline: none;
  transition: box-shadow .15s ease, border-color .15s ease;
  font-size: 14px;
}

.pfu-field input:focus{
  border-color: rgba(16,185,129,0.65);
  box-shadow: 0 0 0 4px rgba(16,185,129,0.16);
}

.pfu-field small{
  display:block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.pfu-actions{
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
  margin-top: 12px;
}

.pfu-btn{
  border: 0;
  cursor: pointer;
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 900;
  font-size: 13px;
  transition: transform .05s ease, background-color .15s ease, box-shadow .15s ease;
  user-select: none;
  display:inline-flex;
  align-items:center;
  gap: 8px;
}

.pfu-btn:active{ transform: translateY(1px); }

.pfu-btn-primary{
  background: var(--phage-green);
  color: #fff;
  box-shadow: 0 10px 18px rgba(16,185,129,0.20);
}
.pfu-btn-primary:hover{ background: var(--phage-green-dark); }

.pfu-btn-secondary{
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--border);
}
.pfu-btn-secondary:hover{ background: rgba(17,24,39,0.03); }

.pfu-btn-ghost{
  background: rgba(16,185,129,0.10);
  color: #065f46;
  border: 1px solid rgba(16,185,129,0.20);
}
.pfu-btn-ghost:hover{ background: rgba(16,185,129,0.16); }

.pfu-dilutions{
  margin-top: 14px;
  display:flex;
  flex-direction:column;
  gap: 10px;
}

.pfu-dilution{
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: linear-gradient(135deg, rgba(16,185,129,0.10), rgba(255,255,255,0.86));
}

.pfu-dilution-head{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 12px;
  margin-bottom: 10px;
}

.pfu-dilution-title{
  font-weight: 900;
  font-size: 14px;
}

.pfu-mini-remove{
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 999px;
  padding: 6px 10px;
  cursor:pointer;
  font-weight: 900;
}

.pfu-dilution-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 720px){
  .pfu-dilution-grid{ grid-template-columns: 1fr; }
}

.pfu-message{
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 13px;
  line-height: 1.4;
  font-weight: 900;
}
.pfu-message.good{
  border-color: rgba(16,185,129,0.26);
  background: rgba(16,185,129,0.10);
  color: #065f46;
}
.pfu-message.warn{
  border-color: rgba(245,158,11,0.30);
  background: rgba(245,158,11,0.10);
  color: #92400e;
}
.pfu-message.bad{
  border-color: rgba(220,38,38,0.22);
  background: rgba(220,38,38,0.08);
  color: #b91c1c;
}

.pfu-results{ margin-top: 14px; }

.pfu-results-head{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 12px;
  flex-wrap:wrap;
}
.pfu-results-head h3{
  margin: 0;
  font-size: 15px;
  font-weight: 900;
}

.pfu-summary{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}
@media (max-width: 720px){
  .pfu-summary{ grid-template-columns: 1fr; }
}

.pfu-summary-card{
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: #fff;
}
.pfu-summary-label{
  font-size: 12px;
  color: var(--muted);
  font-weight: 900;
}
.pfu-summary-value{
  margin-top: 6px;
  font-size: 16px;
  font-weight: 1000;
  color: #065f46;
}
.pfu-summary-sub{
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
  font-weight: 800;
  line-height: 1.35;
}

.pfu-export-actions{
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
  margin-top: 12px;
}

.pfu-table-wrap{
  margin-top: 12px;
  overflow:auto;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
}

.pfu-table{
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

.pfu-table th, .pfu-table td{
  padding: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 12.5px;
  vertical-align: top;
  text-align:left;
}

.pfu-table th{
  background: #f9fafb;
  font-weight: 1000;
}

.pfu-tag{
  display:inline-flex;
  align-items:center;
  padding: 4px 8px;
  border-radius: 999px;
  font-weight: 1000;
  font-size: 12px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--muted);
}
.pfu-tag.ok{
  color: #065f46;
  border-color: rgba(16,185,129,0.25);
  background: rgba(16,185,129,0.10);
}
.pfu-tag.skip{
  color: #b91c1c;
  border-color: rgba(220,38,38,0.20);
  background: rgba(220,38,38,0.08);
}

.pfu-footnote{
  display:block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}