@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Poppins:wght@300;400;500;600&display=swap');

:root {
    --primary-color: #4e6cff;
    --primary-light: #eef1ff;
    --secondary-color: #f5f7ff;
    --text-color: #333;
    --text-light: #767676;
    --bot-message-bg: var(--primary-light);
    --user-message-bg: #e6f7ff;
    --border-radius: 15px;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', 'Poppins', sans-serif;
    background-color: #f9f9f9;
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.chat-container {
    width: 100%;
    max-width: 450px;
    background-color: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
    display: flex;
    flex-direction: column;
    height: 80vh;
    max-height: 700px;
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background-color: white;
    border-bottom: 1px solid #eee;
}

.chat-header-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.avatar {
    width: 40px;
    height: 40px;
    background-color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--primary-color);
    font-size: 1.2rem;
}

.header-info h1 {
    font-size: 1.2rem;
    font-weight: 600;
}

.status {
    font-size: 0.8rem;
    color: #4CAF50;
}

.btn-option {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.2rem;
    cursor: pointer;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    display: flex;
    gap: 10px;
    max-width: 80%;
}

.bot-message {
    align-self: flex-start;
}

.user-message {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-avatar {
    width: 35px;
    height: 35px;
    background-color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--primary-color);
    font-size: 1rem;
    flex-shrink: 0;
}

.user-message .message-avatar {
    background-color: var(--primary-color);
    color: white;
}

.message-content {
    display: flex;
    flex-direction: column;
}

.message-text {
    padding: 12px 15px;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    line-height: 1.6;
}

.bot-message .message-text {
    background-color: var(--bot-message-bg);
    border-top-left-radius: 5px;
}

.user-message .message-text {
    background-color: var(--user-message-bg);
    border-top-right-radius: 5px;
    text-align: right;
}

.message-time {
    font-size: 0.7rem;
    color: var(--text-light);
    margin-top: 5px;
    padding: 0 5px;
}

.chat-input-area {
    padding: 15px;
    background-color: white;
    border-top: 1px solid #eee;
}

.input-container {
    display: flex;
    align-items: center;
    background-color: var(--secondary-color);
    border-radius: 30px;
    padding: 5px 15px;
}

.btn-attachment, .btn-send {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
}

.btn-send {
    color: var(--primary-color);
}

#user-input {
    flex: 1;
    border: none;
    outline: none;
    background: none;
    padding: 10px;
    font-size: 0.95rem;
    font-family: inherit;
}

/* ファイルプレビュー領域 */
.file-preview-area {
    display: none;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 15px;
    background-color: white;
    border-top: 1px solid #eee;
}

.file-preview-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: 5px;
    background-color: var(--secondary-color);
    padding: 5px 10px;
    border-radius: 10px;
    max-width: 200px;
}

.file-preview-image {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 5px;
}

.remove-file-btn {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: #ff4d4f;
    color: white;
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font-size: 12px;
    padding: 0;
}

/* スクロールバーのスタイリング */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

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

.chat-messages::-webkit-scrollbar-thumb {
    background: #ddd;
    border-radius: 10px;
}

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

/* レスポンシブ調整 */
@media (max-width: 500px) {
    .chat-container {
        height: 100vh;
        max-height: none;
        border-radius: 0;
    }
    
    body {
        padding: 0;
    }
}