.settings-trigger {
  width: 26px;
  height: 26px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--panel);
  color: #475467;
  font: inherit;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}

.settings-trigger:hover {
  border-color: #98a2b3;
  background: var(--panel-2);
  color: var(--text);
}

.settings-trigger:focus-visible {
  outline: 3px solid var(--accent-soft);
  border-color: var(--accent);
}

.settings-dialog {
  width: min(680px, calc(100% - 28px));
  max-height: min(84vh, 780px);
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  color: var(--text);
  box-shadow: 0 24px 70px rgba(16, 24, 40, .2);
}

.settings-dialog::backdrop {
  background: rgba(16, 24, 40, .3);
  backdrop-filter: blur(2px);
}

.settings-dialog .dialog-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.settings-dialog .dialog-head h2 {
  margin-bottom: 4px;
}

.settings-dialog .dialog-head .muted {
  margin: 0;
  line-height: 1.5;
}

.settings-dialog .dialog-close {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  border: 0;
  border-radius: 999px;
  background: var(--panel-2);
  color: #475467;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.settings-dialog .dialog-close:hover {
  color: var(--text);
}

.settings-content {
  display: grid;
  gap: 0;
}

.settings-section,
.settings-dialog .usage-settings {
  margin: 0;
  padding: 18px 0;
  border: 0;
  border-top: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.settings-content > :first-child {
  padding-top: 0;
  border-top: 0;
}

.settings-dialog .usage-settings {
  width: 100%;
}

.sender-protection-settings {
  display: grid;
  gap: 16px;
}

.sender-protection-copy {
  min-width: 0;
}

.sender-protection-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.sender-protection-title-row h3 {
  margin: 0;
  font-size: 16px;
  letter-spacing: -.01em;
}

.sender-protection-description {
  margin: 6px 0 0;
  max-width: 72ch;
  line-height: 1.5;
}

.sender-protection-state {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--panel-2);
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 750;
}

.sender-protection-state.is-blocked {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.sender-protection-message {
  min-height: 18px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.45;
}

.sender-protection-message.is-error {
  color: var(--danger);
}

.sender-protection-control {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  grid-template-columns: none;
  gap: 14px;
  font-size: 13px;
  font-weight: 650;
  cursor: pointer;
}

.sender-protection-switch {
  position: relative;
  display: inline-flex;
  width: 44px;
  height: 24px;
  flex: 0 0 auto;
}

.sender-protection-switch input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
}

.sender-protection-slider {
  width: 44px;
  height: 24px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--panel-2);
  transition: background .15s ease, border-color .15s ease;
}

.sender-protection-slider::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 1px 3px rgba(16, 24, 40, .22);
  transition: transform .15s ease;
}

.sender-protection-switch input:checked + .sender-protection-slider {
  border-color: var(--accent);
  background: var(--accent);
}

.sender-protection-switch input:checked + .sender-protection-slider::after {
  transform: translateX(20px);
}

.sender-protection-switch input:focus-visible + .sender-protection-slider {
  outline: 3px solid var(--accent-soft);
  outline-offset: 2px;
}

.sender-protection-switch input:disabled + .sender-protection-slider {
  opacity: .5;
  cursor: not-allowed;
}

.sender-protection-warning {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: -8px 0 16px;
  padding: 7px 10px;
  border: 1px solid #fedf89;
  border-radius: 8px;
  background: #fffaeb;
  color: #7a2e0e;
  font-size: 12.5px;
  line-height: 1.4;
}

.sender-protection-warning[hidden] {
  display: none;
}

.sender-protection-warning.is-unavailable {
  border-color: var(--line);
  background: var(--panel-2);
  color: var(--muted);
}

.sender-protection-warning-text {
  min-width: 0;
}

.sender-protection-warning-action {
  flex: 0 0 auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent-strong);
  font: inherit;
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}

.sender-protection-warning-action:hover {
  color: var(--accent);
}

.sender-protection-warning-action:focus-visible {
  outline: 3px solid var(--accent-soft);
  outline-offset: 2px;
}

@media (max-width: 720px) {
  .settings-dialog {
    padding: 18px;
  }

  .settings-dialog .usage-settings {
    align-items: stretch;
    flex-direction: column;
    gap: 12px;
  }

  .sender-protection-warning {
    align-items: flex-start;
  }
}