/* Dark theme */
:root {
  --background-color: #333333;
  --header-color: #202225;
  --headings-color: #ffffff;
  --font-color: #eeeeee;
  --border-color: #141414;
  --line-color: #ffffff;
  --link-color: #cc99ff;
  --link-color-hover: #ffffff;
}

/* Light theme */
html[data-theme="light"] {
  --background-color: #ffffff;
  --headings-color: #181818;
  --font-color: #181818;
  --line-color: #181818;
  --nav-link-color: #2599fd;
  --nav-link-color-hover: #000000;
  --link-color: #cc99ff;
  --link-color-hover: #000000;
}

body {
  background-color: var(--background-color);
  color: var(--font-color);
  font-family: "Open Sans", sans-serif;
  font-display: swap;
  font-size: 1rem;
  line-height: 1.6;
}

h1,
h2,
h3,
h4,
h5 {
  color: var(--headings-color);
  font-weight: bold;
  line-height: 1.2;
}

hr {
  background-color: var(--line-color);
}

table {
  width: 100%;
}

table th {
  text-align: left;
  padding-top: 5px;
  padding-bottom: 5px;
}

table td {
  padding-top: 5px;
  padding-bottom: 5px;
}

form {
  margin-bottom: 20px;
}

.container {
  width: 100%;
  padding-right: 15px;
  padding-left: 15px;
  margin-right: auto;
  margin-left: auto;
}
@media (min-width: 576px) {
  .container {
    width: 540px;
  }
}
@media (min-width: 768px) {
  .container {
    width: 720px;
  }
}
@media (min-width: 992px) {
  .container {
    width: 960px;
  }
}
@media (min-width: 1200px) {
  .container {
    width: 1140px;
  }
}

/* Navigation */
header {
  display: flex;
  justify-content: space-between;
  padding-top: 10px;
  padding-bottom: 10px;
  padding-left: 0px;
  width: 1200px;
  margin: 0 auto;
}

header h1 {
  margin: 0;
}

a {
  color: var(--link-color);
  transition: color 0.1s linear;
}

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

/* Content */
main {
  width: 1200px;
  margin: 0 auto;
  margin-top: 60px;
}

a {
  color: rgb(0, 100, 200);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:visited {
  color: rgb(0, 80, 160);
}

label {
  display: block;
}

input,
button,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  padding: 0.4em;
  margin: 0 0 0.5em 0;
  box-sizing: border-box;
  border: 1px solid #ccc;
  border-radius: 2px;
}

input:disabled {
  color: #ccc;
}

input[type="range"] {
  height: 0;
}

button {
  color: #333;
  background-color: #f4f4f4;
  outline: none;
}

button:disabled {
  color: #999;
}

button:not(:disabled):active {
  background-color: #ddd;
}

button:focus {
  border-color: #666;
}

footer {
  display: flex;
  justify-content: space-between;
  color: var(--font-color);
  font-family: var(--font1);
  margin-top: 30px;
}