.bc-app {
  --bc-accent: var(--brand-accent);
  --bc-accent-strong: var(--brand-accent-2);
  --bc-ink: var(--text);
  --bc-text: var(--text);
  --bc-muted: var(--muted);
  --bc-line: var(--line);
  --bc-panel: rgba(255, 255, 255, 0.78);
  --bc-panel-soft: rgba(248, 252, 252, 0.92);
  --bc-positive: #137333;
  --bc-negative: #c62828;
  color: var(--bc-text);
}

.bc-grid-bg {
  position: relative;
  padding: 0 0 8px;
}

.bc-grid-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at top right, color-mix(in srgb, var(--brand-accent-2) 10%, transparent), transparent 28%),
    radial-gradient(circle at bottom left, color-mix(in srgb, var(--brand-accent-3) 10%, transparent), transparent 30%),
    linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
}

.bc-shell {
  position: relative;
  display: grid;
  gap: 24px;
}

.bc-stack {
  display: grid;
  gap: 24px;
}

.bc-hero {
  display: grid;
  gap: 18px;
  padding: 28px;
  border-radius: 28px;
  background:
    radial-gradient(circle at top right, rgba(94, 234, 212, 0.18), transparent 28%),
    radial-gradient(circle at bottom left, rgba(121, 215, 255, 0.14), transparent 32%),
    linear-gradient(145deg, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.78));
  border: 1px solid var(--bc-line);
  box-shadow: 0 18px 40px rgba(2, 6, 23, 0.22);
}

.bc-hero-top {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1.6fr) minmax(240px, 0.7fr);
  align-items: start;
}

.bc-hero-copy {
  display: grid;
  gap: 10px;
}

.bc-eyebrow {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bc-accent) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--bc-accent) 28%, transparent);
  color: var(--bc-text);
  font-size: 0.86rem;
  font-weight: 700;
}

.bc-title {
  margin: 0;
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 1.05;
}

.bc-text {
  color: var(--bc-muted);
  margin: 0;
}

.bc-hero-controls {
  display: grid;
  gap: 12px;
  justify-items: stretch;
}

.bc-form-card,
.bc-panel,
.bc-stat,
.bc-chart-card,
.bc-position-row {
  border: 1px solid var(--bc-line);
  border-radius: 22px;
  background: var(--bc-panel);
  box-shadow: 0 10px 24px rgba(1, 22, 32, 0.06);
}

.bc-form-card,
.bc-panel,
.bc-chart-card {
  padding: 18px;
}

.bc-stat {
  padding: 16px;
}

.bc-field-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bc-muted);
}

.bc-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.bc-button,
.bc-tabs a,
.bc-app button,
.bc-app input,
.bc-app select,
.bc-app textarea {
  font: inherit;
}

.bc-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 16px;
  padding: 12px 16px;
  cursor: pointer;
  text-decoration: none;
  transition: 160ms ease;
}

.bc-button:hover {
  transform: translateY(-1px);
}

.bc-button--tab {
  background: rgba(255, 255, 255, 0.94);
  color: var(--bc-ink);
  font-weight: 700;
}

.bc-button--tab-active {
  background: linear-gradient(135deg, var(--bc-accent), var(--brand-accent-3));
  color: #fff7fb;
  font-weight: 700;
}

.bc-button--primary {
  background: linear-gradient(135deg, var(--bc-accent), var(--brand-accent-3));
  color: #fff7fb;
  font-weight: 700;
}

.bc-button--secondary {
  background: rgba(255, 255, 255, 0.94);
  color: var(--bc-ink);
  font-weight: 700;
}

.bc-button--ghost {
  background: color-mix(in srgb, var(--bc-accent) 14%, transparent);
  border-color: color-mix(in srgb, var(--bc-accent) 34%, transparent);
  color: var(--bc-accent);
  font-weight: 700;
}

.bc-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.bc-alert {
  padding: 16px 18px;
  border-radius: 20px;
  border: 1px solid transparent;
}

.bc-alert--error {
  background: rgba(127, 29, 29, 0.28);
  border-color: rgba(252, 165, 165, 0.24);
  color: #fecaca;
}

.bc-alert--success {
  background: rgba(6, 78, 59, 0.28);
  border-color: rgba(134, 239, 172, 0.24);
  color: #bbf7d0;
}

.bc-toolbar,
.bc-overview-grid,
.bc-card-grid {
  display: grid;
  gap: 14px;
}

.bc-toolbar {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.bc-overview-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.bc-card-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.bc-stat-value {
  margin-top: 8px;
  font-size: 1.42rem;
  font-weight: 700;
}

.bc-chart-shell {
  position: relative;
  min-height: 360px;
  overflow: hidden;
}

.bc-chart-svg {
  width: 100%;
  height: 340px;
  display: block;
}

.bc-chart-path {
  fill: none;
  stroke: var(--bc-accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 12px 24px color-mix(in srgb, var(--bc-accent) 18%, transparent));
}

.bc-chart-area {
  fill: url(#bc-chart-fill);
}

.bc-chart-grid line {
  stroke: rgba(16, 33, 43, 0.08);
  stroke-dasharray: 4 6;
}

.bc-range-list {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.bc-range-button {
  border: 1px solid color-mix(in srgb, var(--bc-accent) 26%, transparent);
  background: rgba(255, 255, 255, 0.76);
  color: var(--bc-text);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}

.bc-range-button:hover,
.bc-range-button[aria-pressed="true"] {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--bc-accent) 18%, transparent);
  border-color: color-mix(in srgb, var(--bc-accent) 42%, transparent);
}

.bc-panel-fade {
  animation: bcPanelFade .35s ease;
}

@keyframes bcPanelFade {
  from { opacity: 0; transform: translateY(8px) scale(.99); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.bc-position-list {
  display: grid;
  gap: 14px;
}

.bc-position-row {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) repeat(4, minmax(96px, .72fr));
  gap: 14px;
  align-items: center;
  padding: 16px 18px;
}

.bc-performance {
  font-weight: 700;
}

.bc-performance.is-positive {
  color: var(--bc-positive);
}

.bc-performance.is-negative {
  color: var(--bc-negative);
}

.bc-pill-soft {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bc-accent) 10%, transparent);
  color: var(--bc-text);
  font-size: .85rem;
}

.bc-table-shell {
  overflow: auto;
  border-radius: 18px;
  border: 1px solid var(--bc-line);
}

.bc-table {
  width: 100%;
  border-collapse: collapse;
}

.bc-table th,
.bc-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  vertical-align: top;
}

.bc-table thead {
  background: rgba(255,255,255,0.04);
}

.bc-app .setup-field {
  display: grid;
  gap: 6px;
}

.bc-app input,
.bc-app select,
.bc-app textarea {
  width: 100%;
  border: 1px solid var(--bc-line);
  border-radius: 14px;
  padding: 10px 12px;
  background: var(--surface-strong);
  color: var(--bc-text);
}

.bc-app input::placeholder,
.bc-app textarea::placeholder {
  color: color-mix(in srgb, var(--bc-muted) 70%, transparent);
}

.bc-app a {
  color: inherit;
}

.bc-app .muted {
  color: var(--bc-muted);
}

@media (max-width: 980px) {
  .bc-hero-top {
    grid-template-columns: 1fr;
  }

  .bc-position-row {
    grid-template-columns: 1fr;
  }
}