:root {
  --bg: #0F1417;
  --panel: #161D21;
  --panel-line: #232D32;
  --accent: #5EEAD4;
  --accent-strong: #2DD4BF;
  --accent-sky: #38BDF8;
  --warning: #FBBF24;
  --warning-bg: rgba(251, 191, 36, 0.12);
  --text: #E7EDEF;
  --text-dim: #8B9AA0;
  --metal: #9AA5AA;
  --stopper: #4B5563;
  --glass-line: rgba(255,255,255,0.22);
  --liquid: #5EEAD4;
  --liquid-text: #0A2723;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html {
  background: var(--bg);
  min-height: 100%;
}

body {
  margin: 0 auto;
  width: 100%;
  min-width: 300px;
  max-width: 960px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
}

.app { display: flex; flex-direction: column; }

.app-header {
  padding: 22px 22px 16px;
  border-bottom: 1px solid var(--panel-line);
}

.brand { display: flex; align-items: center; gap: 14px; }

.brand-mark { width: 44px; height: 44px; flex-shrink: 0; }

.brand h1 {
  font-size: 19px;
  font-weight: 600;
  margin: 0;
  letter-spacing: 0.01em;
}

.subtitle {
  margin: 3px 0 0;
  font-size: 13px;
  color: var(--text-dim);
}

main {
  padding: 18px 22px 6px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
}

.col {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

@media (min-width: 760px) {
  main { grid-template-columns: 1fr 1fr; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 12px;
  padding: 18px 18px 20px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  gap: 12px;
}

.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.mode-toggle {
  display: flex;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--panel-line);
  border-radius: 8px;
  padding: 3px;
}

.mode-btn {
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
}

.mode-btn.active {
  background: var(--accent);
  color: #04211D;
}

.field-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  gap: 14px;
}

.field-row[hidden] {
  display: none;
}

.field-row label {
  font-size: 14.5px;
  color: var(--text);
}

.input-unit {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--panel-line);
  border-radius: 8px;
  overflow: hidden;
  min-width: 140px;
}

.input-unit input {
  width: 94px;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  padding: 9px 0 9px 12px;
  text-align: right;
  outline: none;
}

.input-unit input:focus-visible {
  box-shadow: inset 0 0 0 1px var(--accent);
}

.input-unit .unit {
  font-size: 12.5px;
  color: var(--text-dim);
  padding: 0 11px 0 7px;
  border-left: 1px solid var(--panel-line);
  align-self: stretch;
  display: flex;
  align-items: center;
}

.hint {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-dim);
}

.pill-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--panel-line);
  border-radius: 9px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 600;
  padding: 12px 6px;
  cursor: pointer;
}

.pill span {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-dim);
}

.pill.active {
  border-color: var(--accent);
  background: rgba(94, 234, 212, 0.10);
  color: var(--accent);
}

.pill.active span { color: var(--accent); opacity: 0.85; }

.result-panel { padding-bottom: 18px; }

.instrument {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 8px 2px 6px;
}

.vial-wrap { width: 130px; }
.vial-svg { width: 100%; height: auto; display: block; }

.vial-label {
  font-family: var(--mono);
  font-size: 19px;
  font-weight: 700;
  fill: var(--liquid-text);
}

.vial-sublabel {
  font-family: var(--sans);
  font-size: 10.5px;
  fill: var(--liquid-text);
  letter-spacing: 0.05em;
}

.syringe-wrap { width: 100%; }
.syringe-svg { width: 100%; height: auto; display: block; }

.tick { stroke: var(--glass-line); stroke-width: 1.2; }
.tick-major { stroke: var(--text-dim); stroke-width: 1.8; }
.tick-label { font-family: var(--mono); font-size: 13px; fill: var(--text-dim); }

.warning {
  margin-top: 14px;
  background: var(--warning-bg);
  border: 1px solid rgba(251, 191, 36, 0.4);
  color: var(--warning);
  font-size: 13px;
  line-height: 1.45;
  padding: 11px 13px;
  border-radius: 8px;
}

.readout-grid {
  margin-top: 16px;
  display: flex;
  gap: 12px;
}

.readout-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--panel-line);
  border-radius: 9px;
  padding: 12px 8px;
}

.readout-card.highlight {
  border-color: var(--accent);
  background: rgba(94, 234, 212, 0.08);
}

.readout-card .readout-label {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.readout-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  text-align: center;
  color: var(--text);
  font-size: 20px;
  font-weight: 600;
  padding: 2px 0;
  border-radius: 5px;
}

.readout-card.highlight .readout-input {
  color: var(--accent);
  font-size: 28px;
}

.readout-input:focus-visible {
  box-shadow: inset 0 0 0 1px var(--accent);
}

.readout-card.warn .readout-input { color: var(--warning) !important; }

.readout-card .readout-unit {
  font-size: 11.5px;
  color: var(--text-dim);
}

.dose-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.dose-block {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: var(--accent);
  opacity: 0.9;
}

.dose-grid-extra {
  margin-top: 6px;
  font-size: 11.5px;
  color: var(--text-dim);
}

.supply-readout {
  margin-top: 14px;
  text-align: center;
  font-size: 14.5px;
  color: var(--text);
}

.center-row {
  display: flex;
  justify-content: center;
  margin-top: 12px;
}

.supply-duration {
  margin-top: 8px;
  text-align: center;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
}

.plan-row {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--panel-line);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.plan-label {
  font-size: 14px;
  color: var(--text);
}

.plan-input {
  width: 64px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--panel-line);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  padding: 9px 8px;
  text-align: center;
  outline: none;
}

.plan-input:focus-visible {
  box-shadow: inset 0 0 0 1px var(--accent);
}

.plan-result {
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--accent);
  text-align: center;
  background: rgba(94, 234, 212, 0.06);
  border: 1px solid rgba(94, 234, 212, 0.2);
  border-radius: 8px;
  padding: 11px 12px;
}

.app-footer {
  padding: 14px 22px 20px;
  font-size: 11px;
  line-height: 1.55;
  color: var(--text-dim);
  text-align: center;
}

.mono { font-family: var(--mono); }