.ext-page {
  --ext-ink: #20272d;
  --ext-muted: #78828b;
  --ext-line: rgba(28, 43, 54, 0.12);
  --ext-paper: rgba(255, 255, 255, 0.86);
  --ext-accent: #456f78;
  background:
    linear-gradient(180deg, rgba(236, 246, 247, 0.9), rgba(249, 250, 250, 0.96) 42%),
    var(--bg-page);
  color: var(--ext-ink);
}

.ext-navbar {
  background: rgba(247, 251, 251, 0.8);
  border-bottom: 1px solid var(--ext-line);
  backdrop-filter: blur(18px);
}

.ext-scroll {
  height: calc(100% - var(--navbar-height));
  overflow-y: auto;
  padding: 18px 16px calc(30px + env(safe-area-inset-bottom));
}

.ext-rule-entry {
  width: 100%;
  min-height: 72px;
  padding: 15px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--ext-line);
  border-radius: 16px;
  background: var(--ext-paper);
  color: var(--ext-ink);
  text-align: left;
  box-shadow: 0 8px 26px rgba(37, 63, 70, 0.05);
}

.ext-rule-entry > span:first-child {
  display: grid;
  gap: 4px;
}

.ext-rule-entry strong {
  font-size: 15px;
  letter-spacing: 0.01em;
}

.ext-rule-entry small {
  color: var(--ext-muted);
  font-size: 12px;
}

.ext-rule-entry .svg-icon {
  width: 17px;
  color: var(--ext-muted);
}

.ext-section-head {
  margin: 25px 3px 9px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.ext-section-head h2 {
  margin: 0;
  font-size: 14px;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.ext-section-head span {
  color: var(--ext-muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

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

.ext-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  border: 1px solid var(--ext-line);
  border-radius: 14px;
  background: var(--ext-paper);
  overflow: hidden;
}

.ext-item.is-off {
  opacity: 0.58;
}

.ext-item-main {
  min-width: 0;
  padding: 13px 12px 13px 15px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 10px;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
}

.ext-item-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 650;
}

.ext-item-trigger {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--ext-muted);
  font-size: 11px;
}

.ext-item-target {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  color: var(--ext-accent);
  font-size: 10px;
}

.ext-switch {
  padding: 12px 14px 12px 4px;
}

.ext-switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.ext-switch span {
  width: 34px;
  height: 20px;
  display: block;
  position: relative;
  border-radius: 999px;
  background: #c9d0d3;
  transition: background 160ms ease;
}

.ext-switch span::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18);
  transition: transform 160ms ease;
}

.ext-switch input:checked + span {
  background: var(--ext-accent);
}

.ext-switch input:checked + span::after {
  transform: translateX(14px);
}

.ext-empty {
  min-height: 126px;
  display: grid;
  place-content: center;
  gap: 5px;
  border: 1px dashed rgba(69, 111, 120, 0.28);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.42);
  color: var(--ext-ink);
}

.ext-empty span {
  color: var(--ext-muted);
  font-size: 12px;
}

.ext-editor-overlay {
  z-index: 1300;
}

.ext-editor {
  max-height: min(88vh, 780px);
  display: flex;
  flex-direction: column;
  border-radius: 22px 22px 0 0;
  background: #f8faf9;
}

.ext-editor-head {
  min-height: 54px;
  padding: 0 10px;
  display: grid;
  grid-template-columns: 42px 1fr 56px;
  align-items: center;
  border-bottom: 1px solid var(--ext-line);
}

.ext-editor-head h2 {
  margin: 0;
  font-size: 15px;
  text-align: center;
}

.ext-editor-save {
  padding: 7px 0;
  border: 0;
  background: transparent;
  color: var(--ext-accent);
  font-weight: 700;
}

.ext-editor-scroll {
  overflow-y: auto;
  padding: 16px 17px calc(24px + env(safe-area-inset-bottom));
}

.ext-targets {
  display: flex;
  gap: 9px;
}

.ext-targets label {
  flex: 1;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--ext-line);
  border-radius: 11px;
  background: #fff;
  font-size: 13px;
}

.ext-template {
  min-height: 240px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 12px;
  line-height: 1.5;
  tab-size: 2;
}

.ext-placeholder-line {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: -4px 0 15px;
}

.ext-placeholder-line code {
  padding: 3px 7px;
  border-radius: 6px;
  background: rgba(69, 111, 120, 0.08);
  color: var(--ext-accent);
  font-size: 11px;
}

.ext-preview {
  padding-top: 4px;
}

.ext-preview [data-html-extension-host] {
  margin-top: 8px;
}

.ext-delete {
  width: 100%;
  margin-top: 23px;
  padding: 11px;
  border: 1px solid rgba(171, 79, 74, 0.22);
  border-radius: 11px;
  background: transparent;
  color: #a44d49;
}

.ext-rule-entry:focus-visible,
.ext-item-main:focus-visible,
.ext-empty:focus-visible,
.ext-editor-save:focus-visible,
.ext-delete:focus-visible,
.ext-switch input:focus-visible + span {
  outline: 2px solid var(--ext-accent);
  outline-offset: 2px;
}

@media (min-width: 720px) {
  .ext-scroll {
    max-width: 680px;
    margin: 0 auto;
  }

  .ext-editor {
    width: min(620px, 92vw);
    margin: auto auto 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ext-switch span,
  .ext-switch span::after {
    transition: none;
  }
}