@import url('https://fonts.googleapis.com/css?family=Open+Sans');

:root {
  font-size: 16px;
  font-family: 'Open Sans';

  --text-primary: #000000;
  --text-secondary: #333333;
  --bg-primary: #f3f3f3;
  --bg-secondary: #ffffff;

  --content-mx-width: 1200px;

  --scrollbar-width: 0.25rem;
  --scrollbar-track: #c6c6c6;
  --scrollbar-track-border-radius: 4px;
  --scrollbar-thumb: rgb(102, 102, 102);
  --scrollbar-thumb-border-radius: 4px;

  /* --footer-background-color: #ebebeb; */
  --footer-border-top-color: #cacaca;
  --footer-border-top-width: 0.1rem;

  /* main */
  --main-margin-top: 4rem;
  --main-padding: 0rem;
  /* button tooltip */
  --tooltip-background-color: #e7e7e7;
  --tooltip-text-color: #333;
}
* {
  box-sizing: border-box;
}

body {
  color: var(--text-primary);
  background-color: var(--bg-primary);
  margin: 0;
  padding: 0;
  transition: background-color 0.3s ease, color 0.3s ease;
}
body.dark-mode {
  --text-primary: #ececec;
  --text-secondary: #b6b6b6;
  --bg-primary: #100e13;
  --bg-secondary: #18181d;

  --scrollbar-track: #49494b;
  --scrollbar-thumb: rgb(124, 121, 121);

  /* --footer-background-color: #1f1f29; */
  --footer-border-top-color: #4f4f4f;

  --tooltip-background-color: #333;
  --tooltip-text-color:#fff;
}
body::-webkit-scrollbar {
  width: var(--scrollbar-width);
}
body::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
  border-radius: var(--scrollbar-track-border-radius);
}
body::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--scrollbar-thumb-border-radius);
}

main {
  padding: var(--main-padding);
  margin-top: var(--main-margin-top);
}

footer {
  font-size: 0.8rem;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0.5rem;
  padding-top: 0;
  background-color: var(--footer-background-color);
  color: var(--text-secondary);
  position: relative;
  bottom: 0;
  width: 100%;
  border-top: var(--footer-border-top-width) solid var(--footer-border-top-color);
}
footer a {
  color: var(--text-secondary);
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}