:root {
  color-scheme: dark;
  font-family: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-block-size: 100vh;
  min-block-size: 100dvh;
  margin: 0;
  background: #10192e;
  color: #ffffff;
}

.settings-page {
  padding: max(1rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) max(1rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
}

.settings-shell {
  inline-size: min(100%, 44rem);
  margin-inline: auto;
}

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.5rem 2rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: rgb(255 255 255 / 78%);
  font-size: 0.95rem;
  text-decoration: none;
  transition: color 140ms ease;
}

.back-link:hover {
  color: #ffffff;
}

.back-link:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 4px;
  border-radius: 0.35rem;
}

.settings-brand {
  margin: 0;
  color: rgb(255 255 255 / 55%);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.settings-title {
  margin: 0.25rem 0 0;
  font-size: clamp(2rem, 7vw, 3rem);
  line-height: 1;
}

.settings-panel {
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 11%);
  border-radius: 1.35rem;
  background: #18243f;
  box-shadow: 0 1.25rem 3rem rgb(0 0 0 / 18%);
}

.settings-group {
  padding: 1.25rem;
}

.settings-group__heading h2 {
  margin: 0;
  font-size: 1.05rem;
}

.settings-group__heading p {
  margin: 0.35rem 0 1.2rem;
  color: rgb(255 255 255 / 58%);
  font-size: 0.9rem;
  line-height: 1.5;
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem;
  border: 1px solid rgb(255 255 255 / 8%);
  border-radius: 1rem;
  background: rgb(255 255 255 / 4%);
  cursor: pointer;
}

.setting-copy {
  display: grid;
  gap: 0.3rem;
}

.setting-name {
  font-weight: 700;
}

.setting-description {
  max-inline-size: 31rem;
  color: rgb(255 255 255 / 58%);
  font-size: 0.87rem;
  line-height: 1.45;
}

.switch {
  position: relative;
  flex: 0 0 auto;
}

.switch input {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  opacity: 0;
}

.switch__track {
  position: relative;
  display: block;
  inline-size: 3rem;
  block-size: 1.75rem;
  border: 1px solid rgb(255 255 255 / 16%);
  border-radius: 999px;
  background: #34405b;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.switch__thumb {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-start: 0.2rem;
  inline-size: 1.25rem;
  block-size: 1.25rem;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0.15rem 0.4rem rgb(0 0 0 / 22%);
  transform: translateY(-50%);
  transition: transform 160ms cubic-bezier(0.22, 1, 0.36, 1);
}

.switch input:checked + .switch__track {
  border-color: rgb(122 162 255 / 65%);
  background: #4268c9;
}

.switch input:checked + .switch__track .switch__thumb {
  transform: translate(1.2rem, -50%);
}

.switch input:focus-visible + .switch__track {
  outline: 3px solid #ffffff;
  outline-offset: 3px;
}

.settings-actions {
  display: flex;
  min-block-size: 5.25rem;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-block-start: 1px solid rgb(255 255 255 / 8%);
  background: rgb(0 0 0 / 8%);
}

.save-status {
  margin: 0 auto 0 0;
  color: rgb(255 255 255 / 65%);
  font-size: 0.86rem;
}

.save-status.is-error {
  color: #ffb4b4;
}

.save-button {
  min-block-size: 2.75rem;
  padding-inline: 1.15rem;
  border: 0;
  border-radius: 0.85rem;
  background: #ffffff;
  color: #10192e;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  transition: transform 140ms ease, opacity 140ms ease;
}

.save-button:hover {
  opacity: 0.92;
}

.save-button:active {
  transform: scale(0.98);
}

.save-button:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .back-link,
  .switch__track,
  .switch__thumb,
  .save-button {
    transition-duration: 1ms;
  }
}

@media (max-width: 520px) {
  .settings-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .setting-row {
    align-items: flex-start;
  }

  .settings-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .save-status {
    min-block-size: 1.1rem;
  }

  .save-button {
    inline-size: 100%;
  }
}