/* GPT-5 会話ビューア - ChatGPT風スタイル */

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

/* ライトモード（デフォルト） */
:root {
    --bg-dark: #ffffff;
    --bg-sidebar: #f7f7f8;
    --bg-message-user: #e9e9eb;
    --bg-message-assistant: transparent;
    --text-primary: #1a1a1a;
    --text-secondary: #6b6b6b;
    --border-color: #e5e5e5;
    --accent-color: #10a37f;
    --hover-color: #ececec;
    --code-bg: #f4f4f4;
}

/* ダークモード（システム設定に応じて） */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-dark: #212121;
        --bg-sidebar: #171717;
        --bg-message-user: #2f2f2f;
        --bg-message-assistant: transparent;
        --text-primary: #ececec;
        --text-secondary: #8e8e8e;
        --border-color: #444;
        --accent-color: #10a37f;
        --hover-color: #2a2a2a;
        --code-bg: #1a1a1a;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Hiragino Sans', 'Noto Sans JP', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.container {
    display: flex;
    height: 100vh;
}

/* サイドバー */
.sidebar {
    width: 300px;
    background-color: var(--bg-sidebar);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h1 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.para-link {
    display: inline-block;
    vertical-align: middle;
    margin-left: 12px;
    opacity: 0.4;
    transition: opacity 0.2s;
}

.para-link:hover {
    opacity: 1;
}

.para-link img {
    width: 16px;
    height: 16px;
}

.file-input-wrapper {
    position: relative;
}

.file-input-wrapper input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-input-wrapper label {
    display: block;
    padding: 10px 16px;
    background-color: var(--hover-color);
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
}

.file-input-wrapper label:hover {
    border-color: var(--accent-color);
    background-color: rgba(16, 163, 127, 0.1);
}

.search-box {
    padding: 12px 16px;
}

.search-box input {
    width: 100%;
    padding: 10px 14px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.search-box input::placeholder {
    color: var(--text-secondary);
}

.name-setting {
    padding: 0 16px 12px;
}

.name-setting label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.name-setting input {
    width: 100%;
    padding: 10px 14px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

.name-setting input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.name-setting input::placeholder {
    color: var(--text-secondary);
}

.conversation-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.conversation-list .placeholder {
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

.conversation-item {
    padding: 12px 14px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-bottom: 2px;
}

.conversation-item:hover {
    background-color: var(--hover-color);
}

.conversation-item.active {
    background-color: var(--hover-color);
}

.conversation-item .title {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.conversation-item .date {
    font-size: 12px;
    color: var(--text-secondary);
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}

/* メインコンテンツ */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-dark);
}

.chat-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-dark);
}

.chat-header h2 {
    font-size: 16px;
    font-weight: 600;
}

.chat-header .chat-date {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
    display: block;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px 0;
}

.welcome-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
}

.welcome-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

/* メッセージ */
.message {
    padding: 16px 24px;
    max-width: 800px;
    margin: 0 auto 8px;
}

/* ユーザーメッセージ（右寄せバブル） */
.message.user {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.message.user .message-time {
    margin-top: 4px;
    margin-right: 4px;
}

.message-bubble {
    background-color: var(--bg-message-user);
    padding: 12px 16px;
    border-radius: 20px;
    max-width: 70%;
    font-size: 15px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* 相手メッセージ（左寄せ） */
.message.assistant {
    display: flex;
    align-items: flex-start;
}

.message-body {
    flex: 1;
    min-width: 0;
}

.message-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.message-role {
    font-weight: 600;
    font-size: 14px;
}

.message-time {
    font-size: 12px;
    color: var(--text-secondary);
}

.message-content {
    font-size: 15px;
    line-height: 1.7;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.message-content p {
    margin-bottom: 12px;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content code {
    background-color: var(--code-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 14px;
}

.message-content pre {
    background-color: var(--code-bg);
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 12px 0;
}

.message-content pre code {
    background: none;
    padding: 0;
}

/* スクロールバー */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-secondary);
}

/* モバイル用メニューボタン */
.menu-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 200;
    width: 44px;
    height: 44px;
    background-color: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0;
}

.menu-toggle svg {
    display: block;
    margin: auto;
}

/* オーバーレイ */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 90;
}

.sidebar-overlay.visible {
    display: block;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .sidebar {
        width: 85%;
        max-width: 320px;
        position: fixed;
        left: 0;
        top: 0;
        height: 100%;
        z-index: 100;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

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

    .sidebar-header {
        padding-top: 68px;
    }

    .sidebar-header h1 {
        text-align: center;
    }

    .main-content {
        width: 100%;
    }

    .chat-header {
        padding-left: 64px;
    }

    .message {
        padding: 12px 16px;
    }

    .message-bubble {
        max-width: 85%;
    }

    .welcome-message p {
        padding: 0 20px;
        text-align: center;
    }
}

/* ローディング */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: var(--text-secondary);
}

.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}