.annotation-inline-btn {
  margin-top: 10px;
  min-height: 32px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(99, 255, 210, 0.24);
  background: rgba(0, 229, 168, 0.08);
  color: var(--mode-accent-light);
  font-size: 12px;
  font-weight: 850;
  cursor: pointer;
}

.annotation-inline-btn:hover {
  border-color: rgba(99, 255, 210, 0.48);
  background: rgba(0, 229, 168, 0.14);
}

.annotation-popover {
  position: fixed;
  z-index: 17000;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px;
  border-radius: 999px;
  border: 1px solid rgba(99, 255, 210, 0.28);
  background: rgba(5, 21, 31, 0.92);
  box-shadow: 0 14px 36px rgba(0,0,0,0.34);
  backdrop-filter: blur(14px);
}

.annotation-popover button {
  min-height: 34px;
  padding: 7px 12px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, var(--mode-accent), var(--mode-accent-dark));
  color: #06151f;
  font-size: 12px;
  font-weight: 900;
  cursor: pointer;
}

.annotation-panel {
  margin-top: 12px;
  border-radius: 12px;
  border: 1px solid rgba(99, 255, 210, 0.22);
  background:
    radial-gradient(circle at top left, rgba(0, 229, 168, 0.12), transparent 34%),
    linear-gradient(180deg, rgba(10, 35, 49, 0.96), rgba(4, 16, 24, 0.94));
  box-shadow: 0 18px 44px rgba(0,0,0,0.22);
  overflow: hidden;
}

.annotation-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.annotation-panel-head span,
.annotation-panel-head strong {
  display: block;
}

.annotation-panel-head span {
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 900;
}

.annotation-panel-head strong {
  margin-top: 3px;
  color: var(--text-secondary);
  font-size: 0.76rem;
  font-weight: 700;
}

.annotation-panel-head button {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
}

.annotation-panel-body {
  display: grid;
  gap: 10px;
  padding: 12px 14px 14px;
}

.annotation-selection-preview {
  display: grid;
  gap: 5px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px dashed rgba(99, 255, 210, 0.24);
  background: rgba(255,255,255,0.04);
}

.annotation-selection-preview span {
  color: var(--mode-accent-light);
  font-size: 0.74rem;
  font-weight: 850;
}

.annotation-selection-preview strong {
  color: var(--text);
  font-size: 0.86rem;
  line-height: 1.5;
}

.annotation-loading-line,
.annotation-error-text,
.annotation-answer-block p,
.annotation-answer-block li {
  color: var(--text-secondary);
  font-size: 0.86rem;
  line-height: 1.65;
}

.annotation-answer-block {
  display: grid;
  gap: 9px;
}

.annotation-answer-block h4 {
  color: var(--text);
  font-size: 0.98rem;
}

.annotation-answer-block ul {
  display: grid;
  gap: 5px;
  margin-left: 18px;
}

.annotation-mini-formula {
  padding: 9px 10px;
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  overflow-x: auto;
}

.annotation-check-note {
  padding-top: 8px;
  border-top: 1px dashed rgba(255,255,255,0.10);
}

.annotation-panel.is-error {
  border-color: rgba(255, 95, 115, 0.34);
}

@media (max-width: 520px) {
  .annotation-popover {
    max-width: calc(100vw - 24px);
  }

  .annotation-panel {
    border-radius: 10px;
  }
}