/* Shared light/dark theme for tools.yutok.dev */
:root {
  color-scheme: light;
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #656d76;
  --link: #0969da;
  --border: #d0d7de;
  --surface: #f6f8fa;
  --surface-2: #f4f4f4;
  --track: #e8e8e8;
  --code-bg: #f6f8fa;
  --error-bg: #ffe8e8;
  --error-fg: #8b0000;
  --error-border: #f0b0b0;
  --input-bg: #ffffff;
  --input-border: #bbbbbb;
  --toggle-bg: #f6f8fa;
  --toggle-border: #d0d7de;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0d1117;
    --fg: #e6edf3;
    --muted: #8b949e;
    --link: #58a6ff;
    --border: #30363d;
    --surface: #161b22;
    --surface-2: #21262d;
    --track: #2a2a2a;
    --code-bg: #161b22;
    --error-bg: #3a1515;
    --error-fg: #ffb4b4;
    --error-border: #6a3030;
    --input-bg: #0d1117;
    --input-border: #555555;
    --toggle-bg: #21262d;
    --toggle-border: #30363d;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d1117;
  --fg: #e6edf3;
  --muted: #8b949e;
  --link: #58a6ff;
  --border: #30363d;
  --surface: #161b22;
  --surface-2: #21262d;
  --track: #2a2a2a;
  --code-bg: #161b22;
  --error-bg: #3a1515;
  --error-fg: #ffb4b4;
  --error-border: #6a3030;
  --input-bg: #0d1117;
  --input-border: #555555;
  --toggle-bg: #21262d;
  --toggle-border: #30363d;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #656d76;
  --link: #0969da;
  --border: #d0d7de;
  --surface: #f6f8fa;
  --surface-2: #f4f4f4;
  --track: #e8e8e8;
  --code-bg: #f6f8fa;
  --error-bg: #ffe8e8;
  --error-fg: #8b0000;
  --error-border: #f0b0b0;
  --input-bg: #ffffff;
  --input-border: #bbbbbb;
  --toggle-bg: #f6f8fa;
  --toggle-border: #d0d7de;
}

html {
  color-scheme: light dark;
  background-color: var(--bg);
  color: var(--fg);
}

html[data-theme="light"] { color-scheme: light; }
html[data-theme="dark"] { color-scheme: dark; }

body {
  background-color: var(--bg);
  color: var(--fg);
}

a {
  color: var(--link);
}

.note,
.muted,
.fname {
  color: var(--muted);
}

.theme-toggle {
  position: fixed;
  top: 0.65rem;
  right: 0.65rem;
  z-index: 1000;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0;
  padding: 0.35rem 0.65rem;
  font: inherit;
  font-size: 0.8rem;
  line-height: 1.2;
  color: var(--fg);
  background: var(--toggle-bg);
  border: 1px solid var(--toggle-border);
  border-radius: 6px;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

.theme-toggle:hover {
  border-color: var(--link);
}

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

/* Prevent UA / color-scheme from leaving light text on light surfaces */
body, p, li, td, th, h1, h2, h3, h4, label, figcaption, summary {
  color: var(--fg);
}

input, select, textarea, button:not(.theme-toggle) {
  color: var(--fg);
  background-color: var(--input-bg);
  border-color: var(--input-border);
}

::placeholder {
  color: var(--muted);
  opacity: 1;
}