.grade-protection-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.grade-protection-overlay--visible {
  opacity: 1;
}

.grade-protection-dialog {
  position: relative;
  width: 100%;
  max-width: 640px;
  max-height: 75vh;
  overflow-y: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  background: var(--color-surface);
  border-radius: calc(24px * var(--squircle-scale));
  corner-shape: squircle;
  padding: 40px;
  box-shadow: 0 8px 24px var(--color-shadow-popover);
  opacity: 0;
  transform: translateY(100vh);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.grade-protection-dialog::-webkit-scrollbar {
  display: none;
}

.grade-protection-dialog--visible {
  opacity: 1;
  transform: translateY(0);
}

/* The X a fifth bigger than its old 22px, and the same gray hovered or not.
   Tucked into the corner, 16px in from the top and right. */
.grade-protection-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  /* The X centered in the button, not sat on a text baseline in it. */
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  width: 28px;
  height: 28px;
  border: none;
  background: none;
  color: var(--color-gray-dark);
  font-size: 26.4px;
  line-height: 1;
  cursor: pointer;
}

.grade-protection-title {
  margin: 0 0 16px;
  font-size: 26px;
  font-weight: var(--fw-class-name);
  color: var(--color-text-primary);
}

.grade-protection-intro {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-text-primary);
}

.grade-protection-intro a {
  color: var(--color-accent);
  text-decoration: underline;
}

.grade-protection-section-title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.grade-protection-section-text {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-gray-dark);
}

.grade-protection-compare {
  display: flex;
  gap: 16px;
  margin: 4px 0 20px;
}

.grade-protection-compare-column {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  background: var(--color-gray-lighter);
  border-radius: 14px;
}

.grade-protection-compare-heading {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.grade-protection-grades {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.grade-protection-grade-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 18px;
  font-weight: 400;
  color: var(--color-text-primary);
}

.grade-protection-grade-row .letter-grade {
  width: 26px;
  height: 26px;
}

.grade-protection-cipher-box {
  height: 52px;
  overflow-y: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 10px;
  border-radius: 10px;
  background: var(--color-surface);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 11px;
  line-height: 1.5;
  color: var(--color-gray-dark);
  word-break: break-all;
}

.grade-protection-cipher-box::-webkit-scrollbar {
  display: none;
}

.grade-protection-key-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 4px;
  font-size: 12px;
  color: var(--color-gray-dark);
}

.grade-protection-key-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  margin-top: -2px;
}