:root {
    --main-bg: #1a1a1a;
    --container-bg: #2b2b2b;
    --border-color: #444;
    --text-color: #f0f0f0;
    --accent-color: #4CAF50;
    --accent-color-dark: #388E3C;
    --ai-text: #a5d6a7;
    --user-text: #81d4fa;
    --danger-color: #c9302c;
    --twitter-color: #1DA1F2;
    --subtle-text-color: #aaa;
    --system-warning-color: #ff9800; /* オレンジ色 */
    --highlight-color: rgba(76, 175, 80, 0.3); /* ハイライト用の色 */
}

/* --- 基本スタイル --- */
html, body {
    margin: 0;
    background-color: var(--main-bg);
    color: var(--text-color);
    font-family: sans-serif;
    height: 100%;
}

/* --- レイアウト切り替えのコアロジック --- */
body {
    display: flex;
    flex-direction: column;
}

/* --- ヘッダーとフッター --- */

header {
    background-color: var(--container-bg);
    padding: 10px 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

header h1 {
    margin: 0;
    font-size: 1.2em;
}

footer {
    background-color: var(--container-bg);
    border-top: 1px solid var(--border-color);
    padding: 20px;
    text-align: center;
    font-size: 14px;
    flex-shrink: 0;
}
.footer-nav ul { list-style: none; padding: 0; margin: 0 0 10px 0; }
.footer-nav li { display: inline-block; margin: 0 15px; }
.footer-nav a { color: var(--text-color); text-decoration: none; transition: color 0.2s ease; }
.footer-nav a:hover { color: var(--accent-color); }
.copyright { color: var(--subtle-text-color); margin: 0; }

.hidden {
    display: none !important;
}

/* --- ランディングページ --- */
main#landing-page {
    flex-grow: 1;
    display: flex;
    flex-direction: column; /* ★縦にセクションを並べる */
}
.game-introduction { /* ヒーローセクション */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 5vh 20px; /* ★上下の余白を調整 */
    background: radial-gradient(circle, #2b2b2b 0%, #1a1a1a 80%);
}
.landing-content { max-width: 700px; }
.landing-title {
    font-size: clamp(1.8em, 5vw, 2.8em);
    color: var(--accent-color);
    margin-bottom: 20px;
    line-height: 1.4;
}
.landing-description {
    font-size: clamp(1em, 2.5vw, 1.1em);
    line-height: 1.8;
    margin-bottom: 40px;
    color: var(--subtle-text-color);
}
#start-game-button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.2em;
    font-weight: bold;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}
#start-game-button:hover {
    background-color: var(--accent-color-dark);
    transform: scale(1.05);
}

/* ★★★ 追加コンテンツのスタイル ★★★ */
.content-section {
    padding: 40px 20px;
    border-top: 1px solid var(--border-color);
}
.content-section.feature-section {
    background-color: var(--container-bg);
}
.content-inner {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}
.content-inner h3 {
    font-size: 1.8em;
    color: var(--accent-color);
    text-align: center;
    margin-top: 0;
    margin-bottom: 30px;
}
.content-section p {
    line-height: 1.8;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-item {
    text-align: center;
}

.feature-item h4 {
    font-size: 1.2em;
    color: var(--ai-text);
    margin: 0 0 10px 0;
}

.feature-item p {
    font-size: 0.95em;
    color: var(--subtle-text-color);
    text-align: center;
}

/* --- ゲーム画面 --- */
#game-wrapper {
    flex-grow: 1;
    overflow: hidden; /* game-wrapper自身はスクロールしない */
}
#game-content-wrapper {
    display: flex;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
    height: 100%;
}
#game-container {
    width: 70%;
    height: 100%;
    display: flex;
    flex-direction: column;
    background-color: var(--container-bg);
    border: 1px solid var(--border-color);
}
#game-log {
    flex-grow: 1;
    overflow-y: auto;
    white-space: pre-wrap;
    position: relative;
    padding: 20px;
}
.ai-response { color: var(--ai-text); }
.user-command { color: var(--user-text); }
.system-warning { color: var(--system-warning-color) !important; font-weight: bold; }

#scenario-selection-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 8px 5px;
    flex-grow: 1;
}

.scenario-card {
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    padding: 10px 15px;
    margin: 5px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
    width: 75%;
    max-width: 400px;
    text-align: center;
}
.scenario-card:hover {
    background-color: var(--border-color);
    transform: translateY(-5px);
}
.scenario-card h3 {
    margin: 0 0 7px 0;
    font-size: 1.2em;
    color: var(--accent-color);
}
.scenario-card p {
    margin: 0;
    color: var(--subtle-text-color);
    font-size: 0.9em;
}

#input-container {
    padding: 10px;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}
#intro-and-hint-buttons {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}
#hint-toggle-button {
    flex: 1;
    background-color: var(--container-bg);
    color: var(--subtle-text-color);
    border: 1px solid var(--border-color);
    padding: 5px 10px;
    cursor: pointer;
    font-size: 0.8em;
    border-radius: 5px;
    transition: all 0.2s ease;
}
#hint-toggle-button:hover {
    background-color: var(--border-color);
    color: var(--text-color);
}
#hint-toggle-button.active {
    background-color: var(--accent-color-dark);
    border-color: var(--accent-color);
    color: white;
}
#actions-container {
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 10px;
    display: none;
}
#actions-container.visible {
    display: block;
}
.action-button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 12px;
    margin: 5px;
    cursor: pointer;
    font-size: 15px;
    border-radius: 5px;
    transition: all 0.2s ease;
}

.action-button:hover { filter: brightness(1.2); }
.action-button.fade-out { animation: fadeOut 0.5s ease-in-out forwards; }


/* ★★★ テストシナリオ完了ボタンのスタイル ★★★ */
.next-scenario-button {
    width: 100%;
    background-color: var(--twitter-color);
    color: white;
    border: none;
    padding: 15px;
    margin-bottom: 10px; /* 下に余白を追加 */
    font-size: 1.1em;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s ease;
}
.next-scenario-button:hover {
    filter: brightness(1.2);
}


#input-area { display: flex; }
textarea#user-input {
    flex-grow: 1;
    background-color: #333;
    color: var(--text-color);
    border: 1px solid #555;
    padding: 10px;
    font-size: 16px;
    resize: none;
    max-height: 150px;
}
#export-log-button, #send-button {
    border: none;
    padding: 10px;
    cursor: pointer;
    font-size: 16px;
}
#export-log-button {
    background-color: var(--border-color);
    color: var(--text-color);
    margin: 0 10px;
}
#send-button {
    background-color: var(--accent-color);
    color: white;
}

/* --- サイドバー --- */
#sidebar {
    width: 30%;
    height: 100%;
    margin-left: 20px;
    display: flex;
    flex-direction: column;
}
#status-container {
    flex-grow: 1;
    padding: 20px;
    background-color: var(--container-bg);
    border: 1px solid var(--border-color);
    overflow-y: auto;
    margin-bottom: 20px;
}
#status-container h2 {
    color: var(--accent-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    margin-top: 20px;
}
#status-container h2:first-child { margin-top: 0; }
#player-name-display {
    font-size: 1.5em;
    color: var(--accent-color);
    text-align: center;
    margin-bottom: 20px;
    word-break: break-all;
}
#status-display p {
    display: flex;
    justify-content: space-between;
    margin: 10px 0;
    font-size: 16px;
}
#status-display span { font-weight: bold; }
.stat-value { color: var(--user-text); }
.stat-change {
    margin-left: 10px;
    color: var(--ai-text);
    animation: fadeInAndOut 2s ease-in-out forwards;
}
.tooltip { position: relative; cursor: help; }
.tooltip::after {
    content: attr(data-tooltip);
    position: fixed;
    top: auto; bottom: 20px; right: 20px;
    transform: none;
    background-color: var(--main-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 8px 12px;
    width: auto; max-width: 300px; min-width: 150px;
    font-size: 14px;
    line-height: 1.4;
    text-align: left;
    opacity: 0; visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    z-index: 1000;
}
.tooltip:hover::after { opacity: 1; visibility: visible; }
#inventory-display p {
    color: var(--text-color);
    font-size: 15px;
    margin: 5px 0;
}
#system-menu { flex-shrink: 0; }
.system-button {
    width: 100%;
    padding: 15px;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    text-decoration: none;
    display: block;
    box-sizing: border-box;
}
.system-button.share { background-color: var(--twitter-color); }
.system-button.share:hover { background-color: #0c85d0; }

#slot-selector-container {
    display: flex;
    margin-bottom: 10px;
}
#slot-selector {
    flex-grow: 1;
    background-color: #333;
    color: var(--text-color);
    border: 1px solid #555;
    padding: 8px;
    font-size: 14px;
    transition: background-color 0.3s;
}
/* ★★★ ハイライト用のスタイルを追加 ★★★ */
#slot-selector.highlight {
    background-color: var(--highlight-color);
    animation: highlight-fade 2s ease-out;
}
@keyframes highlight-fade {
    from { background-color: var(--highlight-color); }
    to { background-color: #333; }
}

#import-container {
    margin-top: 10px;
}
.system-button-small {
    width: 100%;
    padding: 10px;
    background-color: var(--border-color);
    color: var(--text-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s ease;
}
.system-button-small:hover {
    background-color: #555;
}


#confirm-button, #delete-slot-button {
    color: white;
    border: none;
    margin-left: 5px;
    padding: 8px 15px;
    cursor: pointer;
    font-size: 14px;
    border-radius: 5px;
}
#confirm-button { background-color: var(--accent-color); }
#delete-slot-button { background-color: var(--danger-color); }


/* --- 広告モーダル --- */
.ad-modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}
.ad-modal-overlay.visible { display: flex; }
body:not(.game-active) .ad-modal-overlay {
    display: none !important;
}

.ad-modal-content {
    background-color: var(--container-bg);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
    width: 90%;
    max-width: 400px;
}
.ad-modal-content h3 {
    margin-top: 0;
    color: var(--accent-color);
}
.ad-modal-buttons {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 15px;
}
.ad-modal-button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.2s;
}
.ad-modal-button.confirm { background-color: var(--accent-color); color: white; }
.ad-modal-button.confirm:hover { background-color: var(--accent-color-dark); }
.ad-modal-button.cancel { background-color: var(--border-color); color: var(--text-color); }
.ad-modal-button.cancel:hover { background-color: #555; }

#ad-loading-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    width: 30px; height: 30px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
    display: none;
}



/* --- アニメーション --- */
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
@keyframes fadeOut { 0% { opacity: 1; transform: scale(1); } 100% { opacity: 0; transform: scale(0.95); } }
@keyframes fadeInAndOut { 0% { opacity: 0; transform: translateY(5px); } 20% { opacity: 1; transform: translateY(0); } 80% { opacity: 1; } 100% { opacity: 0; } }
@keyframes highlight-fade {
    from { background-color: var(--highlight-color); }
    to { background-color: #333; }
}


/* --- スマホ表示 --- */
@media (max-width: 800px) {
    body {
        height: auto;
        overflow: auto;
    }
    .landing-title {
        font-size: 1.8em;
    }
    #game-wrapper {
        overflow: visible;
        height: auto;
    }
    #game-content-wrapper {
        flex-direction: column;
        padding: 10px;
        height: auto;
    }
    #game-container, 
    #sidebar {
        width: 100%;
        margin-left: 0;
        height: auto;
    }
    #game-log {
        min-height: 50vh;
        height: 50vh;
    }
    #sidebar {
        margin-top: 20px;
    }
}

/* ★★★ お知らせセクションのスタイル ★★★ */
.blog-post-list {
    text-align: left;
    max-width: 700px;
    margin: 30px auto 0;
}

.blog-post-item {
    display: block;
    background-color: var(--container-bg);
    padding: 15px 20px;
    margin-bottom: 15px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-color);
    border-left: 5px solid var(--border-color);
    transition: all 0.3s ease;
}

.blog-post-item:hover {
    border-left-color: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.post-date {
    font-size: 0.85em;
    color: var(--subtle-text-color);
    margin-right: 15px;
}

.post-title {
    display: inline;
    font-size: 1.1em;
    font-weight: normal;
    margin: 0;
}