/* Shared theme toggle chrome (intro + auth + app header) */
:root {
  --sdo-brand: #4565ff;
  --sdo-border: rgba(30, 29, 29, 0.1);
  --sdo-toggle-track-light: linear-gradient(135deg, #fef3c7 0%, #fde68a 38%, #bae6fd 100%);
  --sdo-toggle-track-dark: linear-gradient(135deg, #1e293b 0%, #312e81 55%, #4338ca 100%);
  --sdo-toggle-thumb-light: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  --sdo-toggle-thumb-dark: linear-gradient(180deg, #eef2ff 0%, #c7d2fe 100%);
  --sdo-toggle-sun: #d97706;
  --sdo-toggle-moon: #4338ca;
  --sdo-brand-glow: rgba(69, 101, 255, 0.4);
}

html.dark {
  --sdo-border: rgba(148, 163, 255, 0.22);
  --sdo-toggle-sun: #fbbf24;
  --sdo-toggle-moon: #c7d2fe;
  --sdo-brand-glow: rgba(91, 124, 255, 0.45);
}

.sdo-theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0;
  margin: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
  z-index: 50;
  line-height: 1;
  font: inherit;
  color: inherit;
}

.sdo-theme-toggle:focus-visible {
  outline: 2px solid var(--sdo-brand);
  outline-offset: 3px;
  border-radius: 999px;
}

.sdo-theme-toggle__label {
  display: none;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
  letter-spacing: -0.01em;
  color: inherit;
  opacity: 0.88;
  pointer-events: none;
  user-select: none;
}

.sdo-theme-toggle__track {
  position: relative;
  display: block;
  width: 54px;
  height: 28px;
  border-radius: 999px;
  background: var(--sdo-toggle-track-light);
  border: 1px solid rgba(251, 191, 36, 0.35);
  box-shadow:
    inset 0 1px 2px rgba(255, 255, 255, 0.65),
    inset 0 -1px 3px rgba(251, 191, 36, 0.12),
    0 1px 3px rgba(15, 23, 42, 0.08);
  transition:
    background 0.35s ease,
    border-color 0.35s ease,
    box-shadow 0.35s ease;
  flex-shrink: 0;
  overflow: hidden;
}

.sdo-theme-toggle.is-dark .sdo-theme-toggle__track {
  background: var(--sdo-toggle-track-dark);
  border-color: rgba(129, 140, 248, 0.45);
  box-shadow:
    inset 0 1px 2px rgba(255, 255, 255, 0.06),
    inset 0 -2px 8px rgba(0, 0, 0, 0.35),
    0 0 12px rgba(67, 56, 202, 0.22);
}

.sdo-theme-toggle__hint {
  position: absolute;
  top: 50%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  transform: translateY(-50%);
  opacity: 0.55;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.sdo-theme-toggle__hint--sun {
  left: 8px;
  background: radial-gradient(circle, #fbbf24 0%, rgba(251, 191, 36, 0) 70%);
}

.sdo-theme-toggle__hint--moon {
  right: 8px;
  background: radial-gradient(circle, #818cf8 0%, rgba(129, 140, 248, 0) 70%);
}

.sdo-theme-toggle:not(.is-dark) .sdo-theme-toggle__hint--sun {
  opacity: 0.85;
  transform: translateY(-50%) scale(1.08);
}

.sdo-theme-toggle.is-dark .sdo-theme-toggle__hint--moon {
  opacity: 0.9;
  transform: translateY(-50%) scale(1.08);
}

.sdo-theme-toggle:not(.is-dark) .sdo-theme-toggle__hint--moon,
.sdo-theme-toggle.is-dark .sdo-theme-toggle__hint--sun {
  opacity: 0.25;
}

.sdo-theme-toggle__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--sdo-toggle-thumb-light);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow:
    0 2px 6px rgba(15, 23, 42, 0.18),
    0 0 0 1px rgba(251, 191, 36, 0.12);
  transition:
    transform 0.32s cubic-bezier(0.34, 1.35, 0.64, 1),
    background 0.3s ease,
    box-shadow 0.3s ease,
    border-color 0.3s ease;
  z-index: 2;
}

html[dir='rtl'] .sdo-theme-toggle__thumb {
  left: auto;
  right: 2px;
}

.sdo-theme-toggle.is-dark .sdo-theme-toggle__thumb {
  transform: translateX(26px);
  background: var(--sdo-toggle-thumb-dark);
  border-color: rgba(255, 255, 255, 0.55);
  box-shadow:
    0 2px 10px rgba(67, 56, 202, 0.35),
    0 0 0 1px rgba(129, 140, 248, 0.25);
}

html[dir='rtl'] .sdo-theme-toggle.is-dark .sdo-theme-toggle__thumb {
  transform: translateX(-26px);
}

.sdo-theme-toggle__glyph {
  display: block;
  flex-shrink: 0;
  transition: opacity 0.2s ease, transform 0.25s ease, color 0.2s ease;
}

.sdo-theme-toggle__glyph--sun {
  color: var(--sdo-toggle-sun);
}

.sdo-theme-toggle__glyph--moon {
  color: var(--sdo-toggle-moon);
}

.sdo-theme-toggle:not(.is-dark) .sdo-theme-toggle__glyph--moon {
  display: none;
}

.sdo-theme-toggle.is-dark .sdo-theme-toggle__glyph--sun {
  display: none;
}

.sdo-theme-toggle:active .sdo-theme-toggle__thumb {
  transform: scale(0.94);
}

.sdo-theme-toggle.is-dark:active .sdo-theme-toggle__thumb {
  transform: translateX(26px) scale(0.94);
}

html[dir='rtl'] .sdo-theme-toggle.is-dark:active .sdo-theme-toggle__thumb {
  transform: translateX(-26px) scale(0.94);
}

.sdo-theme-toggle__system-dot {
  position: absolute;
  top: 2px;
  inset-inline-end: 2px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--sdo-brand);
  border: 1.5px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 0 0 2px rgba(69, 101, 255, 0.18);
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}

.sdo-theme-toggle.is-system .sdo-theme-toggle__system-dot {
  opacity: 1;
  transform: scale(1);
}

.sdo-theme-toggle--app .sdo-theme-toggle__system-dot {
  top: 0;
  inset-inline-end: 0;
}

/* Auth: sit in form toolbar — never stretch full width */
.sdo-theme-toggle--auth {
  position: static;
  inset: auto;
  top: auto;
  left: auto;
  right: auto;
  width: auto;
  max-width: max-content;
  min-width: 0;
  height: auto;
  padding: 0.2rem;
  z-index: auto;
  display: inline-flex;
  flex: 0 0 auto;
  align-self: flex-start;
}

.sdo-theme-toggle--auth .sdo-theme-toggle__track {
  width: 46px;
  height: 26px;
  background: color-mix(in srgb, currentColor 8%, transparent);
  border: 1px solid color-mix(in srgb, currentColor 14%, transparent);
  box-shadow: none;
}

.sdo-theme-toggle--auth.is-dark .sdo-theme-toggle__track {
  background: color-mix(in srgb, #fff 8%, transparent);
  border-color: color-mix(in srgb, #fff 16%, transparent);
  box-shadow: none;
}

.sdo-theme-toggle--auth .sdo-theme-toggle__hint {
  display: none;
}

.sdo-theme-toggle--auth .sdo-theme-toggle__thumb {
  width: 20px;
  height: 20px;
  top: 2px;
  left: 2px;
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.18);
}

html[dir='rtl'] .sdo-theme-toggle--auth .sdo-theme-toggle__thumb {
  left: auto;
  right: 2px;
}

.sdo-theme-toggle--auth.is-dark .sdo-theme-toggle__thumb {
  transform: translateX(20px);
  background: #e8eef4;
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
}

html[dir='rtl'] .sdo-theme-toggle--auth.is-dark .sdo-theme-toggle__thumb {
  transform: translateX(-20px);
}

.sdo-theme-toggle--auth:active .sdo-theme-toggle__thumb {
  transform: scale(0.94);
}

.sdo-theme-toggle--auth.is-dark:active .sdo-theme-toggle__thumb {
  transform: translateX(20px) scale(0.94);
}

html[dir='rtl'] .sdo-theme-toggle--auth.is-dark:active .sdo-theme-toggle__thumb {
  transform: translateX(-20px) scale(0.94);
}

.sdo-theme-toggle--auth .sdo-theme-toggle__glyph--sun {
  color: #9a7418;
}

.sdo-theme-toggle--auth .sdo-theme-toggle__glyph--moon {
  color: #5b6b7c;
}

html.dark .sdo-theme-toggle--auth .sdo-theme-toggle__glyph--moon,
html[data-theme="dark"] .sdo-theme-toggle--auth .sdo-theme-toggle__glyph--moon {
  color: #cbd5e1;
}

/* ---------- App header (desktop + mobile topbar) ---------- */
.sdo-theme-toggle--app {
  gap: 0.65rem;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  color: var(--app-ink, #334155);
}

.sdo-theme-toggle--app:hover,
.sdo-theme-toggle--app:active {
  border: 0;
  background: transparent;
  box-shadow: none;
  transform: none;
}

.sdo-theme-toggle--app .sdo-theme-toggle__label {
  display: inline;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--app-muted, #64748b);
  opacity: 1;
  letter-spacing: -0.015em;
}

.sdo-theme-toggle--app .sdo-theme-toggle__track {
  width: 50px;
  height: 26px;
}

.sdo-theme-toggle--app .sdo-theme-toggle__thumb {
  width: 20px;
  height: 20px;
}

.sdo-theme-toggle--app.is-dark .sdo-theme-toggle__thumb {
  transform: translateX(24px);
}

html[dir='rtl'] .sdo-theme-toggle--app.is-dark .sdo-theme-toggle__thumb {
  transform: translateX(-24px);
}

.sdo-theme-toggle--app.is-dark:active .sdo-theme-toggle__thumb {
  transform: translateX(24px) scale(0.94);
}

html[dir='rtl'] .sdo-theme-toggle--app.is-dark:active .sdo-theme-toggle__thumb {
  transform: translateX(-24px) scale(0.94);
}

html.dark .sdo-theme-toggle--app {
  background: transparent;
  border: 0;
  box-shadow: none;
  color: var(--app-ink, #e8eaf2);
}

html.dark .sdo-theme-toggle--app:hover {
  background: transparent;
  border: 0;
  box-shadow: none;
}

html.dark .sdo-theme-toggle--app .sdo-theme-toggle__label {
  color: var(--app-muted, #9aa3b8);
}

html.dark .sdo-theme-toggle--app .sdo-theme-toggle__system-dot {
  border-color: rgba(21, 28, 46, 0.95);
}

/* Mobile topbar: icon-only, still roomy hit target */
@media (max-width: 991.98px) {
  .sdo-theme-toggle--app {
    gap: 0;
    padding: 0.35rem;
    min-width: 44px;
    min-height: 36px;
    justify-content: center;
  }

  .sdo-theme-toggle--app .sdo-theme-toggle__label {
    display: none;
  }

  .sdo-theme-toggle--app .sdo-theme-toggle__track {
    width: 48px;
    height: 26px;
  }

  .sdo-theme-toggle--app.is-dark .sdo-theme-toggle__thumb {
    transform: translateX(22px);
  }

  html[dir='rtl'] .sdo-theme-toggle--app.is-dark .sdo-theme-toggle__thumb {
    transform: translateX(-22px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .sdo-theme-toggle__track,
  .sdo-theme-toggle__thumb,
  .sdo-theme-toggle__hint,
  .sdo-theme-toggle__glyph,
  .sdo-theme-toggle--app {
    transition: none !important;
  }

  .sdo-theme-toggle--app:hover {
    transform: none;
  }
}