/* 共通 */
* {
  padding: 0;
  margin: 0;
  inset: 0;
  box-sizing: border-box;
  font-family: Meiryo, "Noto Sans JP";
}

.left {
  text-align: left;
}

.right {
  text-align: right;
}

.center {
  text-align: center;
  margin: auto;
}

.inline-block {
  display: inline-block;
}

.flex {
  display: flex;
  flex-wrap: wrap;
}

.pc-only {
  display: none;
}

.mobile-only {
  display: block;
}

@media (min-width: 720px) {
  .pc-only {
    display: block;
  }
  .mobile-only {
    display: none;
  }
}

.hidden {
  display: none;
}

header {
  display: block;
  left: 0;
  top: 0;
  width: 100%;
  height: auto;
  white-space: normal;
}

body {
  background-color: #eee;
}

.container {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  width: 100%;
  align-content: center;
  align-items: flex-start;
  flex-direction: row;
  overflow: hidden;
}

.sidemenu {
  display: block;
  position: relative;
  background-color: #111;
  width: 18em;
  flex-basis: auto;
  flex-grow: 1;
  margin-left: -18em;
  min-width: 18em;
}

.sidemenu-trigger {
  color: white;
}

.sidemenu-trigger > svg {
  color: white;
  fill: white;
  width: 60px;
}

.sidemenu nav {
  margin-bottom: 300px;
}

.sidemenu-thumbnail {
  width: auto;
  height: 120px;
}

.article {
  display: block;
  background-color: #eee;
  width: 0;					/* 幅0にしないとサイドメニューが中途半端にしか出てこない */
  flex-basis: 100%;
  flex-grow: 1;
  white-space: nowrap;
}

.article-header {
  height: auto;
  padding: 2em 1.5em;
  background-color: #111;
  color: #eee;
}

.article-header h1 {
  border-bottom: 2px groove lightgray;
}

.article-content {
  padding: 2em 0.5em 0.5em 0.5em;
  min-height: 30em;
}

@media (min-width: 720px) {
  .container {
  	flex-direction: row;
  }
}

li.sidemenu-list-content {
  display: block;
  width: 100%;
  height: auto;
}

li.sidemenu-list-content.head {
  padding: 2em 0 0 0;
  text-align: center;
  font-weight: bold;
  color: #eee;
}

li.sidemenu-list-content.option {
  border-top: 1px solid gray;
  border-bottom: 1px solid gray;
  background-color: white;
}

a.sidemenu-list-url.tool {
  display: block;
  width: 100%;
  height: auto;
  margin-left: 0.5em;
  text-decoration: none;
  color: blue;
  padding: 0.8em 0.5em;
}

li.sidemenu-list-content.option:hover {
  background-color: #eee;
}

a.sidemenu-list-url.tool:hover {
  color: orangered;
}

a.sidemenu-list-url.tool:active {
  color: purple;
}

/* ツール用 */
fieldset.noborder {
  border: none;
}

select {
  font-size: 24px;
  border-radius: 4px;
}

input, textarea {
  font-size: 16px;
  border-radius: 4px;
  padding: 5px 2.5px 5px 2.5px;
}

.tool-window {
  padding: 5px;
}

.full-label {
  vertical-align: top;
}

.full-label > label {
  display: block;
  width: 100%;
  height: 100%;
}

textarea.input-area {
  width: 300px;
  height: 150px;
}

th {
  white-space: normal;
}

input[readonly], textarea[readonly] {
  background-color: #bbb;
}

/* ポリュビオス暗号ツール */
#tool_input > input[type=number] {
  font-family: "Consolas", monospace;
}

#preview th, #preview td{
  width: 2em;
  height: 2em;
  text-align: center;
  vertical-align: middle;
}