.learn-reader-tools {
  position: sticky;
  top: 0;
  z-index: 8;
  border-bottom: 1px solid var(--learn-line);
  background: linear-gradient(180deg, rgba(5, 5, 5, 0.96), rgba(5, 5, 5, 0.86)), rgba(5, 5, 5, 0.92);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.26);
  backdrop-filter: blur(14px);
}

.learn-reader-progress {
  height: 2px;
  background: rgba(255, 255, 255, 0.08);
}

.learn-reader-progress span {
  display: block;
  width: 0%;
  height: 100%;
  background: var(--learn-accent);
  transition: width 80ms linear;
}

.learn-reader-toolbar {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  padding: 6px 10px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.learn-reader-tool {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex: 0 0 auto;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--learn-muted);
  padding: 0 8px;
  font-size: 12px;
}

.learn-reader-tool:hover,
.learn-reader-tool[aria-pressed="true"] {
  border-color: var(--learn-line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--learn-text);
}

.learn-reader-tool .learn-icon {
  width: 15px;
  height: 15px;
}

.learn-reader-tool[data-reader-panel-trigger="more"] {
  margin-left: auto;
}

.learn-reader-drawer {
  max-height: min(48vh, 430px);
  overflow: auto;
  border-top: 1px solid var(--learn-line);
  padding: 12px;
  background: rgba(4, 4, 4, 0.94);
}

.learn-reader-drawer[hidden] {
  display: none;
}

.learn-reader-drawer-head,
.learn-reader-find {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.learn-reader-drawer-head {
  justify-content: space-between;
  margin-bottom: 10px;
}

.learn-reader-drawer-head strong {
  font-family: "Chakra Petch", "Arial Narrow", system-ui, sans-serif;
  font-size: 15px;
}

.learn-reader-find .learn-input {
  flex: 1 1 220px;
  min-width: 160px;
}

.learn-reader-list {
  display: grid;
  gap: 8px;
}

.learn-reader-row {
  width: 100%;
  min-height: 42px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--learn-line);
  border-radius: var(--learn-radius);
  background: rgba(255, 255, 255, 0.03);
  color: var(--learn-text);
  padding: 9px 10px;
  text-align: left;
}

.learn-reader-row:hover {
  border-color: var(--learn-line-strong);
  background: rgba(255, 255, 255, 0.06);
}

.learn-reader-row span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.learn-reader-row small {
  color: var(--learn-muted);
  font-family: "Space Mono", Consolas, ui-monospace, monospace;
  font-size: 10px;
  text-transform: uppercase;
}

.learn-reader-row.depth-3 {
  padding-left: 24px;
}
.learn-reader-row.depth-4,
.learn-reader-row.depth-5,
.learn-reader-row.depth-6 {
  padding-left: 38px;
}

.learn-reader-row.is-warning {
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.055);
}

.learn-reader-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

.learn-reader-form {
  display: grid;
  gap: 10px;
}

.learn-reader-form .learn-textarea {
  min-height: 150px;
}

.learn-reader-action-card {
  min-height: 108px;
  display: grid;
  justify-items: start;
  align-content: start;
  gap: 7px;
  border: 1px solid var(--learn-line);
  border-radius: var(--learn-radius);
  background: rgba(255, 255, 255, 0.03);
  color: var(--learn-text);
  padding: 12px;
  text-align: left;
}

.learn-reader-action-card:hover {
  border-color: var(--learn-line-strong);
  background: rgba(255, 255, 255, 0.06);
}

.learn-reader-action-card span {
  color: var(--learn-muted);
  font-size: 12px;
  line-height: 1.35;
}

.learn-reader-pre {
  max-height: 320px;
  overflow: auto;
  margin: 0;
  border: 1px solid var(--learn-line);
  border-radius: var(--learn-radius);
  background: rgba(0, 0, 0, 0.52);
  padding: 12px;
  color: #ddd;
  font-family: "Space Mono", Consolas, ui-monospace, monospace;
  font-size: 12px;
  line-height: 1.55;
}

.learn-reader-status {
  min-height: 22px;
  display: flex;
  align-items: center;
  padding: 0 12px 7px;
  color: var(--learn-muted);
  font-family: "Space Mono", Consolas, ui-monospace, monospace;
  font-size: 10px;
  text-transform: uppercase;
}

.learn-find-hit {
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
  padding: 0 2px;
}

.learn-find-hit.is-active {
  background: #fff;
  color: #000;
}