@charset "utf-8";
@import url('https://fonts.googleapis.com/css2?family=Space+Mono&display=swap');

html, body {
  margin: 0;
  padding: 0;
  font-family: 'Space Mono', monospace;
}

* {
  box-sizing: border-box;
}

/* iOSでのデフォルトスタイルをリセット */
input[type="submit"],
input[type="button"] {
  border-radius: 0;
  -webkit-box-sizing: content-box;
  -webkit-appearance: button;
  appearance: button;
  border: none;
  box-sizing: border-box;
  cursor: pointer;
}

input[type="submit"]::-webkit-search-decoration,
input[type="button"]::-webkit-search-decoration {
  display: none;
}

input[type="submit"]::focus,
input[type="button"]::focus {
  outline-offset: -2px;
}
textarea {
  font-family: 'Space Mono', monospace;
}
h1 {
  text-align: center;
  font-size: 12px;
  margin: 8px;
}
p {
  text-align: center;
  font-size: 12px;
  margin: 8px;
}
.cord-input-area {
  max-width: 98%;
  min-width: 98%;
  min-height: 200px;
  margin: 1%;
  display: block;
  font-size: 16px;
  background: #222;
  color: #FFF;
  border-radius: 4px;
  padding: 8px;
}

.btn-area {
  margin: 16px 8px;
}

.btn {
  background-color: #0CC;
  border: none;
  color: #FFF;
  padding: 8px 16px;
  border-radius: 4px;
}

.canvas-area {
  border: solid 2px #888;
  width: 300px;
  margin: 16px auto;
  box-sizing: content-box;
}
.canvas-area canvas {
  vertical-align: middle;
}
.log-area{
  width: 98%;
  margin: 2% 1%;
}
.log-title {
  margin: 4px 0;
  padding: 0;
  font-size: 12px;
  color: #666;
}
.log-text {
  border: 1px solid #DDD;
  padding: 4px;
  overflow: scroll;
  max-height: 200px;
}
.log-error {
  background: #caa;
  color: #611;
  padding: 8px 16px;
}
.log-warning {
  background: #ee8;
  color: #631;
  padding: 8px 16px;
}
.form-control {
  margin: 16px 8px;
}
.form-control input {
  padding: 4px;
  line-height: 16px;
}
.form-control textarea {
  padding: 4px;
  line-height: 16px;
  width: 100%;
  max-width: 300px;
  height: 180px;
}

.form-control label {
  min-width: 80px;
  display: inline-block;
}
.submit-form {
  margin: 32px 0;
  border-top: 1px solid #888;
  padding: 32px 0;
}
.pracitice-list {
  list-style: none;
  padding: 16px;
}

.student-info {
  margin: 32px 0 8px;
  font-size: 12px;
  color: #666;
}
.student-info li{
}
.practice-cell a {
  background: #FFF;
  padding: 16px;
  display: block;
  margin: 16px 0;
  border-radius: 8px;
  color: #666;
  text-decoration: none;
}

.practice-cell a:visited {
  background: #eee;
  color: #aaa;
}

.hidden {
  display: none;
}