/* main theme */
:root {
  --font: sans-serif;
  --lh: 1.35;                       /* line height */
  --accent: darkturquoise;
  --br: 0.5em;                     /* border radius */
}

body {
  margin: 0 auto;
  max-width: 62%;
}

/* color scheme dark / light overrides */
  :root {
    --bg: white;
    --fg: black;
    --hl: var(--accent);
    --bg-accent-sub: lightslategray;
    --bg-accent: silver;
    --bg-accent-super: whitesmoke;
  }
  @media screen and (prefers-color-scheme:light) {
    :root {
      --bg: white;
      --fg: black;
      --hl: var(--accent);
      --bg-accent-sub: lightslategray;
      --bg-accent: silver;
      --bg-accent-super: whitesmoke;
    }
  }
  @media screen and (prefers-color-scheme:dark) {
    :root {
      --bg: black;
      --fg: white;
      --hl: var(--accent);
      --bg-accent-sub: lightgray;
      --bg-accent: lightslategray;
      --bg-accent-super: darkslategray;
    }
  }

/* basic overrides */
  :root {
  }

  :root, input, button, select, textarea {
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font);
  }

  input, button, select, textarea {
    border-radius: var(--br);
    border-style: solid;
    border-width: medium;
    border-color: transparent;
    background-color: var(--bg-accent);
    margin: 0.25em 0.5px;
    padding: 0.5em 1.25em;
  }

  input, button, select, textarea, a, span, label, legend {
    vertical-align: bottom;
  }

  button, input[type="button"], input[type="reset"], input[type="submit"] {
    background: var(--accent);
    color: var(--bg);
    cursor: pointer;
  }

  :is(input, select, textarea)::placeholder {
    color: var(--bg-accent-sub);
  }

/* animation / state overrides */

  input, button, select, textarea {
    transition: all ease-in-out 0.1s;
  }

  :is(input, textarea, select):not([type="button"]):not([type="reset"]):not([type="submit"]):active, 
  :is(input, textarea, select):not([type="button"]):not([type="reset"]):not([type="submit"]):focus {
    background: var(--bg-accent-super);
  }

  button, input[type="button"], input[type="reset"], input[type="submit"],
  :is(input, textarea, select):active, 
  :is(input, textarea, select):focus {
    border-color: var(--accent);  
    outline: none;
  }

  :is(button, input[type="button"], input[type="reset"], input[type="submit"]):not([disabled]):hover {
    filter: brightness(1.2);
  }

  :is(button, input[type="button"], input[type="reset"], input[type="submit"]):not([disabled]):hover {
    filter: brightness(1.2);
  }

/* special stuff */
  /* search box magnifying glass */

  /* disabled controls "deny" cursor */
    [disabled] {
      cursor: not-allowed;
    }

/* note */
  /* details */
    /* commented out stuff that seems to do nothing */
    /* (or nothing extra to the above) */
    /* (or nothing that I like) */
    /* but which I wrote anyway */
  /* 
    :root, input, button, select, textarea,
    p, label, legend, a, a:hover, a:visited, a:link {
      line-height: var(--lh);
    }
  */