:root {
  --theme-switcher-bg: rgba(14, 10, 4, 0.88);
  --theme-switcher-border: rgba(196, 148, 58, 0.24);
  --theme-switcher-shadow: 0 14px 28px rgba(0, 0, 0, 0.24);
  --theme-switcher-text: rgba(242, 232, 212, 0.9);
  --theme-switcher-muted: rgba(242, 232, 212, 0.7);
  --theme-switcher-active-bg: rgba(196, 148, 58, 0.18);
  --theme-switcher-active-border: rgba(196, 148, 58, 0.3);
  --theme-switcher-active-text: #f2e8d4;
}

html[data-theme="light"] {
  --theme-switcher-bg: rgba(250, 246, 239, 0.94);
  --theme-switcher-border: rgba(139, 94, 26, 0.18);
  --theme-switcher-shadow: 0 14px 28px rgba(74, 50, 18, 0.12);
  --theme-switcher-text: #2f261c;
  --theme-switcher-muted: #5d4c37;
  --theme-switcher-active-bg: rgba(139, 94, 26, 0.14);
  --theme-switcher-active-border: rgba(139, 94, 26, 0.22);
  --theme-switcher-active-text: #2f261c;
}

.theme-switcher {
  position: fixed;
  right: 1rem;
  bottom: calc(1rem + env(safe-area-inset-bottom));
  z-index: 520;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem;
  border: 1px solid var(--theme-switcher-border);
  border-radius: 999px;
  background: var(--theme-switcher-bg);
  box-shadow: var(--theme-switcher-shadow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.theme-switcher__label {
  padding: 0 0.45rem 0 0.35rem;
  color: var(--theme-switcher-muted);
  font-family: var(--f-mono, "SF Mono", Menlo, monospace);
  font-size: 0.52rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.theme-switcher__button {
  min-height: 2rem;
  padding: 0.5rem 0.78rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--theme-switcher-text);
  font-family: var(--f-mono, "SF Mono", Menlo, monospace);
  font-size: 0.54rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.theme-switcher__button:hover {
  transform: translateY(-1px);
}

.theme-switcher__button:focus-visible {
  outline: 2px solid rgba(218, 168, 90, 0.95);
  outline-offset: 2px;
}

html[data-theme-choice="auto"] .theme-switcher__button[data-theme-choice="auto"],
html[data-theme-choice="dark"] .theme-switcher__button[data-theme-choice="dark"],
html[data-theme-choice="light"] .theme-switcher__button[data-theme-choice="light"] {
  background: var(--theme-switcher-active-bg);
  border-color: var(--theme-switcher-active-border);
  color: var(--theme-switcher-active-text);
}

@media (max-width: 540px) {
  .theme-switcher {
    right: 0.75rem;
    bottom: calc(0.75rem + env(safe-area-inset-bottom));
    gap: 0.28rem;
    padding: 0.32rem;
    max-width: calc(100vw - 1.5rem);
  }

  .theme-switcher__label {
    display: none;
  }

  .theme-switcher__button {
    min-height: 1.9rem;
    padding: 0.48rem 0.68rem;
    font-size: 0.52rem;
    letter-spacing: 0.12em;
  }
}

@media print {
  .theme-switcher {
    display: none !important;
  }
}