:root {
  --theme-track-bg: var(--color-gray1);
  --theme-icon-idle: var(--color-main);
  --theme-icon-active: var(--color-main);
}

html[data-theme="dark"] {
  --color-black: #f3f4f6;
  --color-gray5: #9ca3af;
  --color-gray4: #6b7280;
  --color-gray3: #4b5563;
  --color-gray2: #374151;
  --color-gray1: #1f2937;
  --color-white: #111827;
  --shadow-navbar: 0 6px 18px -6px rgba(0, 0, 0, 0.6);

  --theme-track-bg: rgba(255, 255, 255, 0.07);
  --theme-icon-idle: var(--color-main);
  --theme-icon-active: var(--color-main);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Theme toggle button */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 999px;
  background: none;
  border: none;
  color: var(--theme-icon-idle);
  cursor: pointer;
  padding: 0;
  margin: 0;
  transition: background 0.15s;
}

.theme-toggle:hover {
  background: var(--theme-track-bg);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-main);
  outline-offset: 2px;
}

.theme-toggle svg {
  width: 1.6rem;
  height: 1.6rem;
  fill: none;
  stroke: var(--color-main);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.theme-toggle__moon path {
  fill: var(--color-main);
  stroke: none;
}

/* show sun in light mode, moon in dark mode */
html[data-theme="light"] .theme-toggle__moon { display: none; }
html[data-theme="dark"]  .theme-toggle__sun { display: none; }

/* Logos — white in dark mode */
html[data-theme="dark"] .work__item-image:not(.neevo-logo) {
  filter: brightness(0) invert(1);
  opacity: 0.85;
}

/* Neevo has dedicated light/dark SVGs */
.neevo-logo--dark { display: none; }
html[data-theme="dark"] .neevo-logo--light { display: none; }
html[data-theme="dark"] .neevo-logo--dark { display: block; }

/* --color-white flips to dark background in dark mode; restore true white on primary buttons */
html[data-theme="dark"] .hero__cta,
html[data-theme="dark"] .hero__cta:hover {
  color: var(--color-black);
}

@media (max-width: 600px) {
  .header__trail {
    gap: 0.8rem;
  }

  .theme-radios {
    margin-left: auto;
  }
}