/**
 * チャットボット CSS
 * LINE風のレスポンシブデザイン
 */

/* リセット */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    /* 高さ指定なし - ラッパーとしてのみ機能 */
}

/* チャットコンテナ - 高さはCSS変数で管理（JSで設定） */
.chat-container {
    max-width: 800px;
    margin: 0 auto;
    height: var(--app-height, 100dvh); /* CSS変数優先、フォールバック100dvh */
    background-color: #ffffff;
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

/* ヘッダー */
.chat-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px 20px;
    padding-top: calc(15px + env(safe-area-inset-top, 0px)); /* Dynamic Island対応 */
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.chat-header h1 {
    font-size: 18px;
    font-weight: 600;
}

.reset-btn {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 6px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 12px;
    transition: background-color 0.3s;
}

.reset-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

/* メッセージエリア */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background-color: #f9f9f9;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.5) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.5) 1px, transparent 1px);
    background-size: 20px 20px;
}

/* メッセージ */
.message {
    display: flex;
    margin-bottom: 20px;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ユーザーメッセージ */
.user-message {
    justify-content: flex-end;
}

.user-message .message-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 18px 18px 4px 18px;
    max-width: 70%;
}

/* ボットメッセージ */
.bot-message {
    justify-content: flex-start;
    flex-wrap: wrap;
}

.bot-message .message-content {
    background-color: white;
    color: #333;
    border-radius: 18px 18px 18px 4px;
    max-width: 70%;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* メッセージ内容 */
.message-content {
    padding: 12px 16px;
    word-wrap: break-word;
    line-height: 1.6;
}

.message-content p {
    margin: 0;
    white-space: pre-wrap;
}

/* メッセージ内のリンク */
.message-content .chat-link {
    color: #2196f3;
    text-decoration: underline;
    transition: color 0.2s;
    word-break: break-all;
}

.message-content .chat-link:hover {
    color: #1976d2;
    text-decoration: underline;
}

/* ユーザーメッセージ内のリンク（白背景用） */
.user-message .message-content .chat-link {
    color: #ffffff;
    text-decoration: underline;
}

.user-message .message-content .chat-link:hover {
    color: #e3f2fd;
}

/* メッセージ時刻 */
.message-time {
    font-size: 11px;
    color: #999;
    margin-top: 4px;
    padding: 0 5px;
}

.user-message .message-time {
    text-align: right;
}

.bot-message .message-time {
    text-align: left;
}

/* ローディング */
.loading {
    display: flex;
    justify-content: flex-start;
    padding: 0 20px;
    margin-bottom: 10px;
}

.loading-dots {
    background-color: white;
    padding: 12px 16px;
    border-radius: 18px 18px 18px 4px;
    display: flex;
    gap: 4px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.loading-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #999;
    animation: bounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 入力エリア */
.chat-input-container {
    background-color: white;
    border-top: 1px solid #e0e0e0;
    padding: 15px;
    padding-bottom: calc(15px + env(safe-area-inset-bottom, 0px)); /* ホームインジケーター対応 */
    flex-shrink: 0;
}

.chat-input-form {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

.chat-input {
    flex: 1;
    border: 1px solid #ddd;
    border-radius: 20px;
    padding: 10px 16px;
    font-size: 14px;
    font-family: inherit;
    resize: none;
    max-height: 120px;
    overflow-y: auto;
    transition: border-color 0.3s;
}

.chat-input:focus {
    outline: none;
    border-color: #667eea;
}

.send-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    flex-shrink: 0;
}

.send-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* スクロールバー */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* フィードバックボタン */
.feedback-buttons {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    padding: 0 5px;
    flex-basis: 100%;
}

.feedback-btn {
    background: none;
    border: 1px solid #ddd;
    border-radius: 12px;
    padding: 4px 10px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
}

.feedback-btn:hover {
    background-color: #f5f5f5;
    transform: scale(1.05);
}

.feedback-btn.active-like {
    background-color: #e3f2fd;
    border-color: #2196f3;
    color: #2196f3;
}

.feedback-btn.active-dislike {
    background-color: #ffebee;
    border-color: #f44336;
    color: #f44336;
}

.feedback-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .chat-container {
        max-width: 100%;
        border-radius: 0;
    }

    .chat-header h1 {
        font-size: 16px;
    }

    .reset-btn {
        font-size: 11px;
        padding: 5px 10px;
    }

    .chat-messages {
        padding: 15px 10px;
    }

    .user-message .message-content,
    .bot-message .message-content {
        max-width: 85%;
    }

    .message-content {
        padding: 10px 14px;
        font-size: 14px;
    }

    .chat-input-container {
        padding: 10px;
        padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
    }

    .chat-input {
        font-size: 16px; /* iOSでズームを防ぐため */
        padding: 8px 14px;
    }

    .send-btn {
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 480px) {
    .user-message .message-content,
    .bot-message .message-content {
        max-width: 90%;
    }
}

/* クイック返信ボタン */
.quick-replies {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
    padding: 0 8px;
}

/* 関連質問ボタン（回答の下） */
.related-questions {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid #e0e0e0;
}

.quick-reply-btn {
    background-color: #ffffff;
    border: 2px solid #667eea;
    color: #667eea;
    padding: 10px 16px;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: normal;
    text-align: left;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* hover対応デバイス（マウス）のみhoverスタイル適用 */
@media (hover: hover) {
    .quick-reply-btn:hover {
        background-color: #667eea;
        color: #ffffff;
        transform: translateY(-2px);
        box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
    }
}

.quick-reply-btn:active {
    background-color: #667eea;
    color: #ffffff;
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.quick-reply-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: #f5f5f5;
    border-color: #ccc;
    color: #999;
}

.quick-reply-btn:disabled:hover {
    transform: none;
    background-color: #f5f5f5;
    color: #999;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.quick-reply-btn .icon {
    font-size: 16px;
}

/* クイック返信ボタンの非表示アニメーション */
.quick-replies.hidden {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.3s ease, max-height 0.3s ease;
    margin-top: 0;
}

/* モバイル対応 */
@media (max-width: 600px) {
    .quick-reply-btn {
        font-size: 13px;
        padding: 8px 14px;
    }
}