/* ========================================
   学習デモページ
======================================== */


/* ページタイトル */
.sub-title {
    font-family: "Kaisei Decol", serif;
    font-weight: 400;
}


/* ========================================
   デモ導入
======================================== */

.demo-intro {
    width: 90%;
    max-width: 1300px;

    margin: 90px auto 70px;
    padding: 40px 45px;

    box-sizing: border-box;

    text-align: center;
}


.demo-intro-title {
    width: fit-content;

    margin: 0 auto 30px;
    padding: 0 30px 8px;

    border-bottom: 1px solid #777777;

    font-family: "Kaisei Decol", serif;
    font-size: clamp(28px, 3vw, 42px);
    font-weight: 400;

    color: #333333;
}


.demo-intro-text {
    margin: 0;

    font-family: "Kaisei Decol", serif;
    font-size: clamp(17px, 1.5vw, 21px);
    line-height: 1.9;

    color: #333333;
}


/* ========================================
   各デモ共通カード
======================================== */

.demo-section {
    width: 90%;
    max-width: 1300px;

    margin: 0 auto 70px;
    padding: 45px 50px 50px;

    box-sizing: border-box;

    background-color: #EAF7F8;

    border: 10px solid #ffffff;
    border-radius: 25px;

    box-shadow: 15px 15px 20px rgb(138, 135, 135);

    font-family: "Kaisei Decol", serif;

    color: #333333;
}


/* 各セクション見出し */
.demo-section-title {
    width: fit-content;
    max-width: 95%;

    margin: 0 auto 35px;
    padding: 0 25px 8px;

    box-sizing: border-box;

    border-bottom: 1px solid #777777;

    font-family: "Kaisei Decol", serif;
    font-size: clamp(25px, 2.5vw, 36px);
    font-weight: 400;

    line-height: 1.5;
    text-align: center;

    color: #333333;
}


/* 説明文 */
.demo-description {
    width: 92%;

    margin: 0 auto 35px;

    font-family: "Kaisei Decol", serif;
    font-size: clamp(16px, 1.4vw, 20px);
    line-height: 1.9;

    text-align: center;

    color: #333333;
}


/* ========================================
   共通ボタン
======================================== */

.demo-section button {
    padding: 12px 22px;

    box-sizing: border-box;

    background-color: #ffffff;
    color: #333333;

    border: 1px solid #888888;
    border-radius: 10px;

    box-shadow: 4px 4px 10px rgba(100, 100, 100, 0.25);

    font-family: "Kaisei Decol", serif;
    font-size: clamp(15px, 1.3vw, 18px);

    cursor: pointer;

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}


@media (hover: hover) {

    .demo-section button:hover {
        transform: translateY(-3px);

        box-shadow: 6px 6px 14px rgba(100, 100, 100, 0.3);
    }
}


.demo-section button:active {
    transform: scale(0.96);
}


/* ========================================
   ① 超初心者
   ランダム色・文字変更
======================================== */

#funBox {
    display: flex;

    justify-content: center;
    align-items: center;

    width: 90%;
    height: 120px;

    margin: 0 auto 30px;

    box-sizing: border-box;

    background-color: #3498db;
    color: #ffffff;

    border: 5px solid #ffffff;
    border-radius: 18px;

    box-shadow: 8px 8px 14px rgba(110, 110, 110, 0.25);

    font-family: "Kaisei Decol", serif;
    font-size: clamp(25px, 2.5vw, 36px);
}


.demo-action-area {
    display: flex;

    justify-content: center;

    margin-bottom: 20px;
}


/* ========================================
   解説ボタン
======================================== */

.details-button {
    display: block;

    width: fit-content;

    margin: 15px auto 0;
}


/* 初期状態では非表示 */
.details-content {
    display: none;

    width: 95%;

    margin: 35px auto 0;
}


/* ========================================
   コード表示
======================================== */

.demo-section pre {
    width: 95%;

    margin: 25px auto;
    padding: 20px;

    box-sizing: border-box;

    background-color: #1e1e1e;
    color: #ffffff;

    border-radius: 12px;

    box-shadow: 7px 7px 12px rgba(100, 100, 100, 0.2);

    font-family: Consolas, "Courier New", monospace;
    font-size: clamp(13px, 1.15vw, 16px);
    line-height: 1.7;

    white-space: pre;
    overflow-x: auto;
}


/* コードの色分け */
.demo-section pre .comment {
    color: #6a9955;
}


.demo-section pre .string {
    color: #ce9178;
}


.demo-section pre .number {
    color: #569cd6;
}


.demo-section pre .keyword {
    color: #c586c0;
}


/* ========================================
   中級・上級
   実際に操作するゲーム
======================================== */

.game-area {
    width: 90%;

    margin: 0 auto 25px;

    text-align: center;
}


.game-area input {
    display: block;

    width: 70%;
    max-width: 600px;

    margin: 0 auto 20px;
    padding: 13px 16px;

    box-sizing: border-box;

    background-color: #ffffff;

    border: 1px solid #999999;
    border-radius: 10px;

    font-family: "Kaisei Decol", serif;
    font-size: clamp(15px, 1.3vw, 18px);

    color: #333333;

    outline: none;
}


.game-area input:focus {
    border-color: #666666;

    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.8);
}


.game-result {
    min-height: 30px;

    margin: 25px 0 10px;

    font-size: clamp(17px, 1.5vw, 21px);
    line-height: 1.7;

    text-align: center;
}


.score-text {
    margin: 20px 0;

    font-size: clamp(18px, 1.6vw, 22px);

    text-align: center;
}


/* 上級：履歴 */
.history-box {
    width: 80%;
    height: 150px;

    margin: 20px auto 0;
    padding: 15px;

    box-sizing: border-box;

    background-color: #ffffff;

    border: 1px solid #dddddd;
    border-radius: 12px;

    box-shadow: inset 2px 2px 8px rgba(100, 100, 100, 0.12);

    font-size: clamp(14px, 1.2vw, 17px);
    line-height: 1.7;

    text-align: left;

    overflow-y: auto;
}


/* ========================================
   初級
   コード変更プレビュー
======================================== */

#displayBox {
    display: flex;

    justify-content: center;
    align-items: center;

    width: 90%;
    height: 120px;

    margin: 0 auto 30px;

    box-sizing: border-box;

    background-color: #ffffff;
    color: blue;

    border: 5px solid #ffffff;
    border-radius: 18px;

    box-shadow: 8px 8px 14px rgba(110, 110, 110, 0.25);

    font-family: "Kaisei Decol", serif;
    font-size: clamp(25px, 2.5vw, 36px);
}


/*
  このデモではJavaScriptで「文字色」を
  red / blue / green に変える。

  そのため背景を白にして、
  どの文字色でも確認できるようにしている。
*/


.demo-button-area {
    display: flex;

    justify-content: center;
    flex-wrap: wrap;

    gap: 15px;

    width: 90%;

    margin: 0 auto 45px;
}


.code-title {
    margin: 0 0 20px;

    font-family: "Kaisei Decol", serif;
    font-size: clamp(20px, 2vw, 27px);
    font-weight: 400;

    text-align: center;

    color: #333333;
}


#codeDisplay {
    min-height: 80px;
}


/* 変更予定箇所のハイライト */
.highlight {
    padding: 2px 4px;

    background-color: #fff176;
    color: #333333;

    border-radius: 3px;
}


.run-button {
    display: block;

    width: fit-content;

    margin: 0 auto;
}


/* ========================================
   自分のPCで試す
======================================== */

.practice-steps {
    width: 88%;

    margin: 20px auto 0;
    padding-left: 35px;

    box-sizing: border-box;

    font-family: "Kaisei Decol", serif;
    font-size: clamp(16px, 1.4vw, 20px);
    line-height: 1.9;

    color: #333333;
}


.practice-steps li {
    margin-bottom: 30px;
}


.practice-steps li::marker {
    font-size: 1.05em;
}


.practice-steps strong {
    font-weight: 700;
}


/* 文中に出てくる index.html 等 */
.demo-section code {
    padding: 2px 7px;

    background-color: #ffffff;

    border-radius: 5px;

    font-family: Consolas, "Courier New", monospace;
    font-size: 0.95em;

    color: #333333;
}


/*
  pre の中のコードには
  白背景を付けたくないのでリセット
*/
.demo-section pre code {
    padding: 0;

    background: transparent;

    color: inherit;

    border-radius: 0;
}


/* ========================================
   最後に
======================================== */

.demo-ending {
    text-align: center;
}


.ending-list {
    width: fit-content;
    max-width: 85%;

    margin: 10px auto 35px;
    padding-left: 30px;

    font-family: "Kaisei Decol", serif;
    font-size: clamp(16px, 1.4vw, 20px);
    line-height: 2;

    text-align: left;

    color: #333333;
}


.ending-list li {
    margin-bottom: 12px;
}

@media(max-width:1024px){

.demo-intro {
    width: 92%;

    margin-top: 80px;
    margin-bottom: 60px;

    padding: 35px 30px;
}


.demo-intro-title {
    max-width: 100%;

    font-size: clamp(26px, 3.5vw, 36px);
    line-height: 1.5;
}


.demo-intro-text {
    font-size: clamp(16px, 2vw, 20px);
}


.demo-section {
    width: 92%;

    margin-bottom: 60px;

    padding: 40px 35px 45px;
}


.demo-section-title {
    max-width: 100%;

    font-size: clamp(24px, 3vw, 32px);
    line-height: 1.5;
}


.demo-description {
    width: 95%;

    font-size: clamp(16px, 2vw, 19px);
}


#funBox,
#displayBox {
    width: 95%;
    height: 110px;
}


.demo-button-area {
    width: 95%;
}


.game-area {
    width: 95%;
}


.game-area input {
    width: 80%;
}


.history-box {
    width: 90%;
}


.details-content {
    width: 100%;
}


.demo-section pre {
    width: 100%;

    font-size: clamp(13px, 1.5vw, 15px);
}


.practice-steps {
    width: 92%;

    padding-left: 30px;

    font-size: clamp(16px, 1.9vw, 19px);
}


.ending-list {
    max-width: 90%;

    font-size: clamp(16px, 1.9vw, 19px);
}
}