/* ===================
   style.css 最終版
   =================== */

/* --- 基本設定 --- */
body {
    font-family: sans-serif;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    overflow: auto; /* スクロールを許可 */
    font-size: 40px; /* 基本のフォントサイズを調整 */
}

.app-layout {
    display: flex;
    height: 100vh;
    width: 100%;
    overflow-x: hidden; /* 横スクロールを防止 */
}

/* --- サイドバー --- */
#sidebar {
    background-color: #2c3e50;
    padding: 1rem;
    padding-top: 80px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 250px;
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 1000;
    box-sizing: border-box;
}

#sidebar.open {
    transform: translateX(0);
}

.nav-btn {
    position: relative; /* 通知の基準位置 */
    background-color: #495057;
    color: white;
    border: none;
    padding: 12px 15px;
    border-radius: 5px;
    cursor: pointer;
    text-align: left;
    transition: background-color 0.3s;
    font-size: 16px;
}

.nav-btn.active, .nav-btn:hover {
    background-color: #007bff;
}

/* --- ハンバーガーメニュー & ホームボタン --- */
#sidebar-toggle-btn {
    position: fixed;
    top: 15px;
    left: 15px;
    width: 40px;
    height: 40px;
    background: #34495e;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
}

#sidebar-toggle-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: white;
    border-radius: 2px;
}

#home-btn {
    position: fixed;
    top: 15px;
    left: 70px;
    width: 40px;
    height: 40px;
    background: #34495e;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    z-index: 1001;
    font-size: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.3s;
}

#home-btn:hover {
    background-color: #4e6a85;
}

/* --- メインコンテンツ --- */
.container {
    background: white;
    width: 100%;
    box-sizing: border-box;
    transition: margin-left 0.3s ease;

    padding: 0; /* ★変更：paddingを一旦リセット */
    margin-left: 0;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    overflow-y: auto; /* ここを修正 */
}

h1 {
    color: #5a5a5a;
    padding-top: 1.5rem; /* ★変更：margin-topからpaddingに変更 */
    margin: 0 1.5rem 1rem; /* ★変更：左右の余白をpaddingからmarginに変更 */
    text-align: center;
    font-size: 1.8rem;
}

#chat-area {
    position: relative; 
    flex-grow: 1;
    /* ▼ CHANGE THIS LINE ▼ */
    padding: 0 1.5rem; /* Remove bottom padding */
    display: flex;
    flex-direction: column;
    /* ADD THIS LINE to prevent content from overflowing oddly */
    overflow: hidden;
    min-height: 0;
}

.chat-history-panel {
    flex-grow: 1;
    overflow-y: auto;
    /* ★変更：残りのスタイルは変更なし */
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    display: none;
    flex-direction: column;
}

.chat-history-panel.active-panel {
    display: flex;
}

/* --- メッセージスタイル --- */
.user-message, .system-message, .error-message {
    padding: 8px 12px;
    margin-bottom: 8px;
    border-radius: 8px;
    max-width: 80%;
    line-height: 1.5;
    word-wrap: break-word;
}

.image-container, .audio-container, .video-container {
    padding: 8px;
    margin-bottom: 8px;
    border-radius: 8px;
    max-width: 80%;
    background-color: #f8f9fa;
    border: 1px solid #eee;
    align-self: flex-start;
    position: relative;
}

.user-message {
    background-color: #007bff;
    color: white;
    align-self: flex-end;
}

.system-message {
    background-color: #e7f3fe;
    color: #1c7ed6;
    font-size: 0.9rem;
    align-self: center;
    text-align: center;
}

.error-message {
    background-color: #ffebee;
    color: #d32f2f;
    align-self: center;
}

.image-container img, .video-container video {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    display: block;
}

.audio-container audio {
    width: 100%;
}

.button-group {
    position: absolute;
    bottom: 10px;
    right: 10px;
    display: flex;
    gap: 8px;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 8px;
    border-radius: 8px;
    z-index: 10;
}
.button-group button {
    background: white;
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 5px 10px;
    cursor: pointer;
    font-size: 14px;
}

/* --- 入力エリア --- */
.input-area {
    /* ▼ ADD THIS LINE ▼ */
    flex-shrink: 0; /* Prevents the input area from shrinking */

    display: flex;
    gap: 10px;
    background: white; 
    /* ▼ CHANGE THIS LINE to give it its own vertical padding ▼ */
    padding: 1rem 0; 
    box-sizing: border-box;
}

.input-area input {
    flex-grow: 1;
    padding: 0.8rem;
    border-radius: 4px;
    border: 1px solid #ddd;
    font-size: 1rem;
}

.input-area button {
    background-color: #007bff;
    color: white;
    padding: 0.8rem 1.2rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
    white-space: nowrap;
}
.input-area button:hover:not(:disabled) {
    background-color: #0056b3;
}
.input-area button:disabled {
    background-color: #6c757d;
    cursor: not-allowed;
}

/* --- ローディング & 通知 --- */
.hidden { display: none !important; }
#loading {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 2s linear infinite;
    margin-bottom: 0.5rem;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.notification-popup {
    position: absolute;
    top: 5px;
    right: 8px;
    background-color: #e74c3c;
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: bold;
    z-index: 10;
    pointer-events: none;
    animation: pulse-animation 1.5s infinite;
}
@keyframes pulse-animation {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.7); }
    70% { transform: scale(1.1); box-shadow: 0 0 0 10px rgba(231, 76, 60, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(231, 76, 60, 0); }
}

/* ▼▼▼ ここからレスポンシブ対応 ▼▼▼ */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }
    
    .app-layout {
        /* サイドバーが開いた時にメインコンテンツをずらさないように */
        margin-left: 0 !important;
    }

    .container {
        padding: 0.8rem;
    }

    h1 {
        font-size: 1.5rem;
        margin-top: 60px;
        margin-bottom: 0.8rem;
    }

    .input-area {
        flex-direction: column;
    }

    .input-area input, .input-area button {
        width: 100%;
        box-sizing: border-box;
    }

    .user-message, .image-container, .audio-container, .video-container {
        max-width: 90%;
    }
}

.container.sidebar-open {
    margin-left: 250px; /* サイドバーの幅と同じ値 */
}