<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>究極SNS</title>
<style>
* {
box-sizing: border-box;
margin: 0;
padding: 0;
}
body {
font-family: 'Segoe UI', Arial, sans-serif;
background-color: #f0f2f5;
color: #1c1e21;
line-height: 1.5;
transition: background-color 0.3s, color 0.3s;
}
body.dark-mode {
background-color: #18191a;
color: #e4e6eb;
}
.header {
background-color: #1877f2;
color: white;
padding: 10px 20px;
display: flex;
align-items: center;
justify-content: space-between;
position: sticky;
top: 0;
z-index: 100;
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.header input {
padding: 10px 15px;
border: none;
border-radius: 25px;
width: 350px;
font-size: 14px;
background-color: #ffffff;
}
.nav {
display: flex;
align-items: center;
}
.nav a, .nav button {
color: white;
margin-left: 25px;
text-decoration: none;
font-weight: 500;
background: none;
border: none;
cursor: pointer;
position: relative;
}
.nav a:hover::after, .nav button:hover::after {
content: '';
position: absolute;
width: 50%;
height: 2px;
background-color: white;
bottom: -5px;
left: 25%;
}
.container {
display: flex;
max-width: 1400px;
margin: 20px auto;
gap: 25px;
}
.sidebar-left {
width: 25%;
padding: 15px;
position: sticky;
top: 70px;
height: fit-content;
}
.sidebar-card {
background-color: white;
border-radius: 10px;
padding: 20px;
box-shadow: 0 2px 6px rgba(0,0,0,0.05);
margin-bottom: 20px;
}
body.dark-mode .sidebar-card {
background-color: #242526;
}
.profile-pic {
width: 60px;
height: 60px;
border-radius: 50%;
background-color: #ddd;
margin: 0 auto 15px;
}
.badge {
display: inline-block;
background-color: #1877f2;
color: white;
padding: 2px 8px;
border-radius: 12px;
font-size: 12px;
margin-left: 5px;
}
.sidebar-left a {
display: block;
color: #1877f2;
text-decoration: none;
margin: 12px 0;
font-size: 15px;
}
.main-content {
width: 50%;
}
.sidebar-right {
width: 25%;
padding: 15px;
position: sticky;
top: 70px;
height: fit-content;
}
.post-box {
background-color: white;
padding: 20px;
border-radius: 10px;
box-shadow: 0 2px 6px rgba(0,0,0,0.05);
margin-bottom: 25px;
}
body.dark-mode .post-box {
background-color: #242526;
}
.post-input {
width: 100%;
padding: 12px 15px;
border: none;
border-radius: 25px;
background-color: #f0f2f5;
resize: none;
font-size: 16px;
outline: none;
}
body.dark-mode .post-input {
background-color: #3a3b3c;
color: #e4e6eb;
}
.post-actions {
display: flex;
justify-content: space-between;
margin-top: 15px;
flex-wrap: wrap;
gap: 10px;
}
.post-actions button {
background-color: #e4e6eb;
color: #050505;
border: none;
padding: 8px 15px;
border-radius: 6px;
cursor: pointer;
font-weight: 500;
transition: background-color 0.2s;
}
body.dark-mode .post-actions button {
background-color: #3a3b3c;
color: #e4e6eb;
}
.post-actions button:hover {
background-color: #d8dade;
}
body.dark-mode .post-actions button:hover {
background-color: #4a4b4c;
}
.post-actions .submit-btn {
background-color: #1877f2;
color: white;
}
.post {
background-color: white;
padding: 20px;
border-radius: 10px;
margin-bottom: 25px;
box-shadow: 0 2px 6px rgba(0,0,0,0.05);
position: relative;
}
body.dark-mode .post {
background-color: #242526;
}
.post-header {
display: flex;
align-items: center;
margin-bottom: 15px;
}
.post-header .profile-pic {
width: 40px;
height: 40px;
margin-right: 12px;
}
.post-header h3 {
margin: 0;
font-size: 16px;
font-weight: 600;
}
.post-header small {
color: #65676b;
font-size: 12px;
}
body.dark-mode .post-header small {
color: #b0b3b8;
}
.post-options {
position: absolute;
top: 10px;
right: 10px;
cursor: pointer;
color: #65676b;
}
.post-options:hover .options-menu {
display: block;
}
.options-menu {
display: none;
position: absolute;
top: 20px;
right: 0;
background-color: white;
border-radius: 8px;
box-shadow: 0 2px 10px rgba(0,0,0,0.1);
padding: 10px;
z-index: 10;
}
body.dark-mode .options-menu {
background-color: #3a3b3c;
}
.options-menu a {
display: block;
color: #050505;
text-decoration: none;
padding: 5px 10px;
}
body.dark-mode .options-menu a {
color: #e4e6eb;
}
.post-image {
width: 100%;
height: 300px;
background-color: #ddd;
border-radius: 8px;
margin: 15px 0;
}
.reactions {
position: relative;
display: inline-block;
}
.reactions:hover .reaction-menu {
display: flex;
}
.reaction-menu {
display: none;
position: absolute;
top: -45px;
left: 0;
background-color: white;
padding: 8px;
border-radius: 25px;
box-shadow: 0 2px 10px rgba(0,0,0,0.1);
gap: 8px;
z-index: 10;
}
body.dark-mode .reaction-menu {
background-color: #3a3b3c;
}
.reaction {
font-size: 22px;
cursor: pointer;
transition: transform 0.2s;
}
.reaction:hover {
transform: scale(1.2);
}
.reaction-stats {
margin-top: 5px;
font-size: 14px;
color: #65676b;
}
body.dark-mode .reaction-stats {
color: #b0b3b8;
}
.post-actions-bar {
display: flex;
justify-content: space-around;
padding: 10px 0;
border-top: 1px solid #e4e6eb;
border-bottom: 1px solid #e4e6eb;
color: #65676b;
font-size: 14px;
}
body.dark-mode .post-actions-bar {
border-color: #3a3b3c;
color: #b0b3b8;
}
.post-actions-bar span {
cursor: pointer;
padding: 5px 10px;
border-radius: 5px;
}
.post-actions-bar span:hover {
background-color: #f2f3f5;
}
body.dark-mode .post-actions-bar span:hover {
background-color: #3a3b3c;
}
.comment-section {
margin-top: 15px;
}
.comment {
display: flex;
align-items: flex-start;
margin-top: 12px;
}
.comment .profile-pic {
width: 32px;
height: 32px;
margin-right: 10px;
}
.comment-text {
background-color: #f2f3f5;
padding: 8px 12px;
border-radius: 18px;
font-size: 14px;
}
body.dark-mode .comment-text {
background-color: #3a3b3c;
color: #e4e6eb;
}
.comment-input {
width: 100%;
padding: 10px 15px;
border: none;
border-radius: 25px;
background-color: #f0f2f5;
font-size: 14px;
margin-top: 10px;
}
body.dark-mode .comment-input {
background-color: #3a3b3c;
color: #e4e6eb;
}
.chat-window {
background-color: white;
border-radius: 10px;
padding: 15px;
box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}
body.dark-mode .chat-window {
background-color: #242526;
}
.chat-message {
margin: 10px 0;
}
.chat-message.sent .comment-text {
background-color: #1877f2;
color: white;
margin-left: auto;
}
.notification-popup {
position: fixed;
bottom: 20px;
right: 20px;
background-color: white;
padding: 15px;
border-radius: 8px;
box-shadow: 0 2px 10px rgba(0,0,0,0.1);
z-index: 200;
}
body.dark-mode .notification-popup {
background-color: #242526;
}
.modal {
display: none;
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: rgba(0,0,0,0.5);
justify-content: center;
align-items: center;
z-index: 200;
}
.modal-content {
background-color: white;
padding: 25px;
border-radius: 10px;
width: 600px;
max-height: 80vh;
overflow-y: auto;
box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
body.dark-mode .modal-content {
background-color: #242526;
}
.footer {
background-color: white;
padding: 20px;
text-align: center;
color: #65676b;
border-top: 1px solid #e4e6eb;
font-size: 13px;
}
body.dark-mode .footer {
background-color: #18191a;
color: #b0b3b8;
border-color: #3a3b3c;
}
.footer a {
color: #65676b;
text-decoration: none;
margin: 0 10px;
}
body.dark-mode .footer a {
color: #b0b3b8;
}
.mobile-menu {
display: none;
position: fixed;
top: 60px;
left: 0;
width: 100%;
background-color: #1877f2;
padding: 15px;
z-index: 99;
}
.mobile-menu a {
color: white;
display: block;
margin: 10px 0;
text-decoration: none;
}
@media (max-width: 900px) {
.container {
flex-direction: column;
margin: 10px;
}
.sidebar-left, .main-content, .sidebar-right {
width: 100%;
position: static;
}
.header input {
width: 150px;
}
.nav {
display: none;
}
.mobile-menu {
display: block;
}
}
</style>
</head>
<body>
<!-- ヘッダー -->
<div class="header">
<h1>究極SNS</h1>
<input type="text" placeholder="友達、投稿、グループを検索">
<div class="nav">
<a href="#">ホーム</a>
<a href="#">友達</a>
<a href="#">メッセージ</a>
<a href="#">通知</a>
<a href="#">プロフィール</a>
<button onclick="document.body.classList.toggle('dark-mode')">ダークモード</button>
</div>
</div>
<div class="mobile-menu">
<a href="#">ホーム</a>
<a href="#">友達</a>
<a href="#">メッセージ</a>
<a href="#">通知</a>
<a href="#">プロフィール</a>
<a href="#" onclick="document.body.classList.toggle('dark-mode')">ダークモード</a>
</div>
<!-- メインコンテンツ -->
<div class="container">
<!-- 左サイドバー -->
<div class="sidebar-left">
<div class="sidebar-card">
<div class="profile-pic"></div>
<h3>ユーザー名 <span class="badge">認証済み</span></h3>
<a href="#">プロフィールを見る</a>
<a href="#">友達 (128)</a>
<a href="#">フォロワー (350)</a>
</div>
<div class="sidebar-card">
<h4>メニュー</h4>
<a href="#">グループ</a>
<a href="#">イベント</a>
<a href="#">マーケットプレイス</a>
<a href="#">設定</a>
</div>
</div>
<!-- 中央（投稿エリア） -->
<div class="main-content">
<!-- 投稿入力エリア -->
<div class="post-box">
<textarea class="post-input" rows="3" placeholder="何を思ってる？"></textarea>
<div class="post-actions">
<button>写真/動画</button>
<button>タグ友達</button>
<button>ライブ配信</button>
<button>イベント作成</button>
<button class="submit-btn" onclick="document.getElementById('postModal').style.display='flex'">投稿</button>
</div>
</div>
<!-- 投稿1 -->
<div class="post">
<div class="post-header">
<div class="profile-pic"></div>
<div>
<h3>山田太郎 <span class="badge">管理者</span></h3>
<small>2025年3月29日 10:30 ・ 公開</small>
</div>
<div class="post-options">⋯
<div class="options-menu">
<a href="#">編集</a>
<a href="#">削除</a>
<a href="#">非表示</a>
</div>
</div>
</div>
<p>新しいプロジェクトの進捗報告！チームで頑張ってます。</p>
<div class="post-image"></div>
<div class="reactions">
<div class="reaction-stats">
12 
5 
3 
2</div>
<div class="reaction-menu">
<span class="reaction"></span>
<span class="reaction"></span>
<span class="reaction"></span>
<span class="reaction">Grav</span>
<span class="reaction">
</span>
</div>
</div>
<div class="post-actions-bar">
<span>リアクション</span>
<span>コメント</span>
<span>シェア</span>
</div>
<div class="comment-section">
<div class="comment">
<div class="profile-pic"></div>
<div class="comment-text"><strong>佐藤花子</strong>: すごい進捗だね！</div>
</div>
<div class="comment">
<div class="profile-pic"></div>
<div class="comment-text"><strong>鈴木次郎</strong>: お疲れ様！</div>
</div>
<input type="text" class="comment-input" placeholder="コメントを入力...">
</div>
</div>
<!-- 投稿2 -->
<div class="post">
<div class="post-header">
<div class="profile-pic"></div>
<div>
<h3>田中優子</h3>
<small>2025年3月29日 09:15 ・ 友達のみ</small>
</div>
<div class="post-options">⋯
<div class="options-menu">
<a href="#">編集</a>
<a href="#">削除</a>
<a href="#">非表示</a>
</div>
</div>
</div>
<p>週末の温泉旅行が楽しみすぎる！</p>
<div class="reactions">
<div class="reaction-stats"> 8 6 1</div>
<div class="reaction-menu">
<span class="reaction"></span>
<span class="reaction"></span>
<span class="reaction"></span>
<span class="reaction"></span>
<span class="reaction"></span>
</div>
</div>
<div class="post-actions-bar">
<span>リアクション</span>
<span>コメント</span>
<span>シェア</span>
</div>
</div>
</div>
<!-- 右サイドバー -->
<div class="sidebar-right">
<div class="sidebar-card">
<h4>友達リスト</h4>
<p><strong>佐藤花子</strong> - オンライン</p>
<p><strong>鈴木次郎</strong> - 5分前</p>
<p><strong>高橋健太</strong> - オフライン</p>
</div>
<div class="sidebar-card">
<h4>グループ</h4>
<p><a href="#">プロジェクトチーム</a> - 15人</p>
<p><a href="#">温泉旅行クラブ</a> - 32人</p>
</div>
<div class="chat-window">
<h4>チャット - 佐藤花子</h4>
<div class="chat-message">
<div class="comment-text">おはよう！週末の予定は？</div>
</div>
<div class="chat-message sent">
<div class="comment-text">おはよう！温泉行くよ！</div>
</div>
<input type="text" class="comment-input" placeholder="メッセージを入力...">
</div>
</div>
</div>
<!-- 投稿モーダル -->
<div id="postModal" class="modal">
<div class="modal-content">
<h3>投稿を作成</h3>
<textarea rows="6" placeholder="詳細を書いてね" style="width: 100%; padding: 10px;"></textarea>
<div style="margin: 15px 0;">
<label>公開範囲: </label>
<select style="padding: 5px;">
<option>公開</option>
<option>友達のみ</option>
<option>自分のみ</option>
</select>
</div>
<div class="post-actions">
<button onclick="document.getElementById('postModal').style.display='none'">キャンセル</button>
<button class="submit-btn">投稿</button>
</div>
</div>
</div>
<!-- 通知ポップアップ -->
<div class="notification-popup">
<p><strong>佐藤花子</strong>があなたの投稿にリアクションしました。</p>
</div>
<!-- フッター -->
<div class="footer">
<p>© 2025 究極SNS. All rights reserved.</p>
<p><a href="#">プライバシー</a> | <a href="#">利用規約</a> | <a href="#">サポート</a> | <a href="#">言語</a></p>
</div>
<script>
// 簡易的な通知ポップアップの表示制御（サンプル）
setTimeout(() => {
document.querySelector('.notification-popup').style.display = 'block';
setTimeout(() => {
document.querySelector('.notification-popup').style.display = 'none';
}, 3000);
}, 2000);
</script>
</body>
</html>
