:root {
  --bmi-accent: #0b6e4f;
  --bmi-sidebar-bg: #0f1720;
  --bmi-sidebar-fg: #e6edf3;
  --bmi-sidebar-muted: #8a97a8;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

#layout {
  display: flex;
  height: 100vh;
  position: relative;
}

#sidebar {
  width: 260px;
  background: var(--bmi-sidebar-bg);
  color: var(--bmi-sidebar-fg);
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1rem;
  box-sizing: border-box;
  transition: margin-left 160ms ease, width 160ms ease;
}

#layout.sidebar-collapsed #sidebar {
  margin-left: -260px;
}

#sidebar-toggle {
  position: absolute;
  top: 0.625rem;
  left: 0.625rem;
  z-index: 20;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(15, 23, 32, 0.85);
  color: var(--bmi-sidebar-fg);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(4px);
}

#sidebar-toggle:hover {
  background: rgba(15, 23, 32, 1);
}

#layout:not(.sidebar-collapsed) #sidebar-toggle {
  color: var(--bmi-sidebar-fg);
  background: transparent;
  border-color: transparent;
}

#layout:not(.sidebar-collapsed) #sidebar-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
}

#sidebar .brand h1 {
  margin: 0 0 0.125rem;
  font-size: 1.25rem;
}

#sidebar .brand p {
  margin: 0 0 1.5rem;
  color: var(--bmi-sidebar-muted);
  font-size: 0.85rem;
}

#api-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
}

#api-list button {
  background: transparent;
  color: var(--bmi-sidebar-fg);
  border: 1px solid transparent;
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.95rem;
}

#api-list button:hover {
  border-color: rgba(255, 255, 255, 0.1);
}

#api-list button.active {
  background: var(--bmi-accent);
  color: #fff;
}

#sidebar footer {
  color: var(--bmi-sidebar-muted);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 0.75rem;
  margin-top: 0.75rem;
}

#content {
  flex: 1;
  min-width: 0;
  overflow: auto;
}