body:has(.settings) {
  background: #0d151b;
  color: #eaf3f1;
}

body:has(.settings) > header {
  max-width: 720px;
  padding-bottom: 12px;
}

body:has(.settings) > header a {
  color: #9dafaf;
  font-size: 13px;
}

main:has(.settings) {
  max-width: 720px;
  padding-top: 12px;
  background: transparent;
}

.settings {
  --accent: #99efcc;
  --muted: #9bafba;
  --panel: #17242d;
  --line: #2b3e49;
}

.settings-back {
  display: inline-block;
  margin-bottom: 18px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
}

.settings-back:hover {
  color: #fff;
}

.settings-eyebrow {
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--muted);
}

.settings h1 {
  margin: 0 0 8px;
  font-size: 38px;
  line-height: 1.2;
  letter-spacing: .06em;
}

.settings h1 span {
  margin-left: 14px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: .12em;
  color: var(--muted);
}

.settings-lead {
  margin: 0 0 24px;
  font-size: 13px;
  color: #bed0d8;
}

.settings-group {
  margin-bottom: 20px;
  padding: 6px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.settings-group-title {
  margin: 14px 0 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--accent);
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.settings-group-title + .settings-row {
  border-top: 0;
}

.settings-text {
  min-width: 0;
}

.settings-label {
  display: block;
  font-size: 15px;
  font-weight: 700;
}

.settings-desc {
  margin: 4px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.settings-control {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 12px;
}

.settings-value {
  min-width: 42px;
  font-size: 13px;
  font-weight: 700;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: #bed0d8;
}

.settings-switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 28px;
  cursor: pointer;
}

.settings-switch input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.settings-switch-track {
  position: absolute;
  inset: 0;
  background: #26394a;
  border: 1px solid #3b515e;
  border-radius: 999px;
  transition: background .15s;
  pointer-events: none;
}

.settings-switch-track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: #eaf3f1;
  border-radius: 50%;
  transition: transform .15s;
}

.settings-switch input:checked + .settings-switch-track {
  background: var(--accent);
  border-color: var(--accent);
}

.settings-switch input:checked + .settings-switch-track::after {
  background: #0b2a21;
  transform: translateX(20px);
}

.settings-switch input:focus-visible + .settings-switch-track,
.settings input[type="range"]:focus-visible,
.settings button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.settings input[type="range"] {
  width: 180px;
  accent-color: var(--accent);
}

.settings button {
  padding: 10px 16px;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  color: #eaf3f1;
  background: #213440;
  border: 1px solid #3b515e;
  border-radius: 8px;
  cursor: pointer;
  transition: background .15s;
}

.settings button:hover {
  background: #304a59;
}

.settings-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.settings-note {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

.settings-credit {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  column-gap: 6px;
  margin: 28px 0 0;
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--muted);
  opacity: .6;
}

.settings-credit-label {
  margin-right: 2px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .16em;
}

.settings-credit-item + .settings-credit-item::before {
  content: '·';
  margin-right: 6px;
}

@media (max-width: 600px) {
  main:has(.settings) {
    margin: 0;
    padding: 12px;
  }
  .settings h1 {
    font-size: 30px;
  }
  .settings h1 span {
    display: block;
    margin: 4px 0 0;
    font-size: 11px;
  }
  .settings-group {
    padding: 4px 14px;
  }
  .settings-row {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .settings-control {
    justify-content: space-between;
  }
  .settings input[type="range"] {
    flex: 1;
    width: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .settings-switch-track,
  .settings-switch-track::after,
  .settings button {
    transition: none;
  }
}