.bmi-calc-wrap {
  --bmi-blue: #1a73c1;
  --bmi-blue-dark: #145a99;
  --bmi-border: #d7dde3;
  --bmi-bg: #ffffff;
  --bmi-panel: #f6f8fa;
  --bmi-text: #222b33;
  --bmi-muted: #5b6975;
  --bmi-under: #4fa3e3;
  --bmi-normal: #3cb371;
  --bmi-over: #f2a93b;
  --bmi-obese: #e05a4e;
  box-sizing: border-box;
  color: var(--bmi-text);
  max-width: 640px;
  margin: 0 auto;
  background: var(--bmi-bg);
  border: 1px solid var(--bmi-border);
  border-radius: 10px;
  padding: 24px;
  line-height: 1.5;
}
.bmi-calc-wrap *, .bmi-calc-wrap *::before, .bmi-calc-wrap *::after {
  box-sizing: border-box;
}
.bmi-calc-wrap .bmi-calc-title {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 16px 0;
  color: var(--bmi-text);
}
.bmi-calc-wrap .bmi-tabs {
  display: flex;
  border-bottom: 2px solid var(--bmi-border);
  margin-bottom: 20px;
  gap: 4px;
}
.bmi-calc-wrap .bmi-tab {
  padding: 9px 18px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--bmi-muted);
  border: none;
  background: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
}
.bmi-calc-wrap .bmi-tab.active {
  color: var(--bmi-blue);
  border-bottom-color: var(--bmi-blue);
}
.bmi-calc-wrap .bmi-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 14px;
}
.bmi-calc-wrap .bmi-field {
  flex: 1 1 200px;
}
.bmi-calc-wrap .bmi-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--bmi-muted);
  margin-bottom: 6px;
}
.bmi-calc-wrap .bmi-field-inline {
  display: flex;
  gap: 8px;
}
.bmi-calc-wrap input[type="number"] {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--bmi-border);
  border-radius: 6px;
  font-size: 15px;
  color: var(--bmi-text);
  background: #fff;
}
.bmi-calc-wrap input[type="number"]:focus {
  outline: none;
  border-color: var(--bmi-blue);
  box-shadow: 0 0 0 3px rgba(26,115,193,0.12);
}
.bmi-calc-wrap .bmi-unit-suffix {
  display: flex;
  align-items: center;
  font-size: 13px;
  color: var(--bmi-muted);
  white-space: nowrap;
  padding: 0 2px;
}
.bmi-calc-wrap .bmi-radio-group {
  display: flex;
  gap: 18px;
  align-items: center;
  height: 38px;
}
.bmi-calc-wrap .bmi-radio-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--bmi-text);
  cursor: pointer;
  margin: 0;
}
.bmi-calc-wrap .bmi-radio-group input[type="radio"] {
  accent-color: var(--bmi-blue);
  width: 15px;
  height: 15px;
  cursor: pointer;
}
.bmi-calc-wrap .bmi-actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}
.bmi-calc-wrap .bmi-btn {
  padding: 11px 22px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  border: none;
}
.bmi-calc-wrap .bmi-btn-primary {
  background: var(--bmi-blue);
  color: #fff;
}
.bmi-calc-wrap .bmi-btn-primary:hover { background: var(--bmi-blue-dark); }
.bmi-calc-wrap .bmi-btn-secondary {
  background: var(--bmi-panel);
  color: var(--bmi-text);
  border: 1px solid var(--bmi-border);
}
.bmi-calc-wrap .bmi-btn-secondary:hover { background: #eceff2; }
.bmi-calc-wrap .bmi-result {
  display: none;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--bmi-border);
}
.bmi-calc-wrap .bmi-result.show { display: block; }
.bmi-calc-wrap .bmi-result h3 {
  font-size: 16px;
  margin: 0 0 12px 0;
  font-weight: 700;
}
.bmi-calc-wrap .bmi-headline {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 4px;
}
.bmi-calc-wrap .bmi-gauge {
  position: relative;
  margin: 22px 0 8px 0;
}
.bmi-calc-wrap .bmi-gauge-bar {
  display: flex;
  height: 14px;
  border-radius: 7px;
  overflow: hidden;
}
.bmi-calc-wrap .bmi-gauge-seg { height: 100%; }
.bmi-calc-wrap .bmi-gauge-marker {
  position: absolute;
  top: -8px;
  width: 0;
  height: 0;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-top: 9px solid var(--bmi-text);
  transform: translateX(-7px);
}
.bmi-calc-wrap .bmi-gauge-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--bmi-muted);
  margin-top: 6px;
}
.bmi-calc-wrap .bmi-facts {
  margin-top: 20px;
  background: var(--bmi-panel);
  border-radius: 8px;
  padding: 14px 16px;
}
.bmi-calc-wrap .bmi-facts div {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 14px;
  border-bottom: 1px dashed var(--bmi-border);
}
.bmi-calc-wrap .bmi-facts div:last-child { border-bottom: none; }
.bmi-calc-wrap .bmi-facts span:first-child { color: var(--bmi-muted); }
.bmi-calc-wrap .bmi-facts span:last-child { font-weight: 700; }
.bmi-calc-wrap .bmi-hidden { display: none !important; }
.bmi-calc-wrap .bmi-error {
  color: #b3261e;
  font-size: 13px;
  margin-top: 6px;
  display: none;
}
.bmi-calc-wrap .bmi-error.show { display: block; }

@media (max-width: 480px) {
  .bmi-calc-wrap { padding: 16px; }
  .bmi-calc-wrap .bmi-headline { font-size: 22px; }
}