.bsc-widget {
  --bsc-navy: #0b2545;
  --bsc-navy-light: #13355e;
  --bsc-teal: #0d9488;
  --bsc-teal-light: #14b8a6;
  --bsc-teal-dim: #ccfbf1;
  --bsc-bg: #f4f8f9;
  --bsc-border: #d7e2e6;
  --bsc-text: #0b2545;
  --bsc-text-muted: #4a6178;

  max-width: 980px;
  margin: 0 auto;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--bsc-text);
  background: var(--bsc-bg);
  border: 1px solid var(--bsc-border);
  border-radius: 14px;
  padding: 24px;
  box-sizing: border-box;
}
.bsc-widget *, .bsc-widget *::before, .bsc-widget *::after { box-sizing: border-box; }

.bsc-header { margin-bottom: 20px; }
.bsc-eyebrow { margin: 0 0 4px; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--bsc-teal); }
.bsc-title { margin: 0 0 6px; font-size: 26px; font-weight: 800; color: var(--bsc-navy); }
.bsc-subtitle { margin: 0; font-size: 14px; line-height: 1.5; color: var(--bsc-text-muted); max-width: 640px; }

.bsc-layout { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 24px; align-items: start; }
@media (max-width: 760px) { .bsc-layout { grid-template-columns: 1fr; } }

.bsc-field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; color: var(--bsc-navy); margin-bottom: 14px; }
.bsc-field-wide { width: 100%; }
.bsc-field small { font-weight: 400; color: var(--bsc-text-muted); }

.bsc-input, .bsc-select {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--bsc-navy);
  background: #fff;
  border: 1px solid var(--bsc-border);
  border-radius: 8px;
  outline: none;
  transition: border-color .15s;
}
.bsc-input:focus, .bsc-select:focus { border-color: var(--bsc-teal); }
.bsc-select { cursor: pointer; color: var(--bsc-teal); font-weight: 700; }

.bsc-input-group { display: flex; gap: 8px; }
.bsc-input-group .bsc-input { flex: 1; }
.bsc-select-unit { width: 84px; flex: none; }

.bsc-section { border: 1px solid var(--bsc-border); border-radius: 10px; margin-bottom: 14px; background: #fff; overflow: hidden; }
.bsc-section-head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  color: var(--bsc-navy);
  text-align: left;
}
.bsc-section-caret { color: var(--bsc-teal); font-size: 11px; transition: transform .15s; }
.bsc-section.bsc-collapsed .bsc-section-caret { transform: rotate(180deg); }
.bsc-section-body { padding: 4px 14px 14px; }
.bsc-section.bsc-collapsed .bsc-section-body { display: none; }

.bsc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  padding: 12px 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: filter .15s, background .15s;
}
.bsc-btn-block { width: 100%; }
.bsc-btn-primary { background: var(--bsc-teal); color: #fff; }
.bsc-btn-primary:hover { filter: brightness(0.94); }
.bsc-btn-outline { background: #fff; color: var(--bsc-navy); border-color: var(--bsc-border); font-size: 13px; padding: 8px 12px; }
.bsc-btn-outline:hover { border-color: var(--bsc-teal); color: var(--bsc-teal); }
.bsc-btn-small { flex: 1; }
.bsc-btn-text { background: transparent; color: var(--bsc-teal); border: none; }
.bsc-btn-text:hover { text-decoration: underline; }

.bsc-error { background: #fde8e8; color: #9b1c1c; border: 1px solid #f5c2c2; border-radius: 8px; padding: 10px 12px; font-size: 13px; margin-bottom: 12px; }

.bsc-result-sticky { position: sticky; top: 16px; background: var(--bsc-navy); border-radius: 14px; padding: 20px; color: #fff; }

.bsc-gauge-wrap { position: relative; width: 100%; max-width: 280px; margin: 0 auto 12px; }
.bsc-gauge { width: 100%; display: block; }
.bsc-gauge-track { fill: none; stroke: rgba(255,255,255,0.15); stroke-width: 12; stroke-linecap: round; }
.bsc-gauge-fill {
  fill: none;
  stroke: var(--bsc-teal-light);
  stroke-width: 12;
  stroke-linecap: round;
  stroke-dasharray: 267;
  stroke-dashoffset: 267;
  transition: stroke-dashoffset 1s cubic-bezier(.22,.9,.34,1);
}
.bsc-gauge-needle {
  stroke: #fff;
  stroke-width: 3;
  stroke-linecap: round;
  transform-origin: 100px 105px;
  transform: rotate(-90deg);
  transition: transform 1s cubic-bezier(.22,.9,.34,1);
}
.bsc-gauge-hub { fill: var(--bsc-teal-light); }
.bsc-gauge-readout { position: absolute; left: 0; right: 0; bottom: -6px; text-align: center; }
.bsc-gauge-value { display: block; font-size: 32px; font-weight: 800; color: #fff; line-height: 1; }
.bsc-gauge-label { display: block; font-size: 12px; color: var(--bsc-teal-dim); margin-top: 2px; text-transform: uppercase; letter-spacing: .06em; }

.bsc-result-list { margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.bsc-result-row { display: flex; justify-content: space-between; font-size: 13px; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.12); }
.bsc-result-row span:first-child { color: var(--bsc-teal-dim); }
.bsc-result-row span:last-child { font-weight: 700; }

.bsc-hint { font-size: 12px; color: var(--bsc-teal-dim); line-height: 1.5; margin: 14px 0; }
.bsc-disclaimer { opacity: .85; }

.bsc-result-actions { display: flex; gap: 8px; margin-top: 4px; }
.bsc-result-sticky .bsc-btn-outline { background: rgba(255,255,255,0.06); color: #fff; border-color: rgba(255,255,255,0.25); }
.bsc-result-sticky .bsc-btn-outline:hover { border-color: var(--bsc-teal-light); color: var(--bsc-teal-light); }
.bsc-result-sticky .bsc-btn-text { color: var(--bsc-teal-light); margin-top: 10px; }

.bsc-history-panel { margin-top: 20px; border-top: 1px solid var(--bsc-border); padding-top: 16px; }
.bsc-history-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.bsc-history-title { margin: 0; font-size: 15px; font-weight: 800; color: var(--bsc-navy); }
.bsc-history-list { display: flex; flex-direction: column; gap: 8px; }
.bsc-history-item { display: flex; justify-content: space-between; align-items: center; background: #fff; border: 1px solid var(--bsc-border); border-radius: 8px; padding: 10px 12px; font-size: 13px; }
.bsc-history-item-main { display: flex; flex-direction: column; gap: 2px; }
.bsc-history-item-time { font-weight: 800; color: var(--bsc-teal); }
.bsc-history-item-meta { color: var(--bsc-text-muted); font-size: 12px; }
.bsc-history-item-remove { background: none; border: none; color: #9b1c1c; cursor: pointer; font-size: 12px; font-weight: 700; }
.bsc-history-empty { font-size: 13px; color: var(--bsc-text-muted); }

.bsc-export-card { position: absolute; left: -9999px; top: -9999px; width: 480px; padding: 24px; background: #fff; color: var(--bsc-navy); font-family: inherit; }