body {
    padding-top: 0px;
    margin: 0;
    background-color: #181818;
    font-family: "Noto Sans", "Noto Sans JP", sans-serif;
    color: #e0e0e0;
}

:root {
    --sidebar-width: 260px;
    --input-primary-color: #d4724a;
    --primary-light: #e89071;
    --accent-color: #dda184;
    --bg-primary: #181818;
    --bg-secondary: #242424;
    --bg-tertiary: #2e2e2e;
    --border-color: #333333;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --message-spacing: 1.5rem;
}

#header {
    background-color: var(--bg-secondary);
    padding-left: 10px;
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    width: 100%;
    z-index: 100;

    #title {
        color: white;
    }

    #apps span {
        color: white;
    }
}

.main-container {
    display: flex;
    height: calc(100vh - 60px);
    /* ヘッダーの高さを考慮 */
    margin-top: 60px;
    /* ヘッダーの下に配置 */
}

/* サイドバー */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: margin-left 0.3s ease;
    height: calc(100vh - 60px);
    /* ヘッダーの高さを考慮 */
}

.sidebar.collapsed {
    margin-left: calc(-1 * var(--sidebar-width));
}

.sidebar-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toggle-sidebar-btn {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: 6px;
    transition: background-color 0.2s;
    margin-left: 0.5rem;
}

.toggle-sidebar-btn:focus {
    outline: none;
}

.toggle-sidebar-btn:hover {
    background-color: var(--bg-tertiary);
}

.chat-list {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
    font-size: 0.9rem;
}

/* メインチャットエリア */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
    position: relative;
    height: calc(100vh - 60px);
    /* ヘッダーの高さを考慮 */
}

.toggle-sidebar-main {
    margin-right: 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: 6px;
    transition: background-color 0.2s;
    z-index: 10;
}

.toggle-sidebar-main:focus {
    outline: none;
}

.toggle-sidebar-main:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.initial-element-display {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    transition: opacity 0.3s ease-in-out;
    padding: 0 2rem 2rem;
}

.initial-element-display.hidden-element {
    display: none;
}

.ai-name {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, #d15285 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    line-height: 1.2;
}

.chat-messages {
    flex-grow: 1;
    overflow-y: auto;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: var(--message-spacing);
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

/* メッセージスタイル */
.chat-bubble.user-bubble {
    max-width: 70%;
    padding: 0.875rem 1.25rem;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: #ffffff;
    align-self: flex-end;
    animation: messageSlideIn 0.3s ease-out;
}

.ai-message-row {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    align-self: flex-start;
    animation: messageSlideIn 0.3s ease-out;
    max-width: 85%;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ai-icon-wrapper {
    position: relative;
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

.ai-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    user-select: none;
}

.ai-bubble-content {
    max-width: 100%;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.875rem 1.25rem;
    border-radius: 18px;
    line-height: 1.6;
    border: 1px solid var(--border-color);
}

/* AIが考え中の表示 */
.thinking-indicator {
    display: flex;
    gap: 4px;
    padding: 0.875rem 1.25rem;
    background-color: var(--bg-secondary);
    border-radius: 18px;
    border: 1px solid var(--border-color);
}

.thinking-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
    animation: thinking 1.4s ease-in-out infinite;
    opacity: 0.5;
}

.thinking-dot:nth-child(1) {
    animation-delay: -0.32s;
}

.thinking-dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes thinking {

    0%,
    80%,
    100% {
        transform: scale(1);
    }

    40% {
        transform: scale(1.3);
    }
}

/* 入力エリア */
.input-area-wrapper {
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    padding: 1rem 1.5rem;
}

/* 初期状態での入力エリアの配置 */
.chat-container.initial {
    justify-content: center;
}

/* デスクトップでの初期状態の配置 */
@media (min-width: 769px) {
    .chat-container.initial .input-area-wrapper {
        position: static;
        margin-top: 1rem;
        border-top: none;
        background-color: transparent;
    }
}

/* モバイルでは通常通り下部に固定 */
@media (max-width: 768px) {
    .chat-container.initial .input-area-wrapper {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        border-top: 1px solid var(--border-color);
        background-color: var(--bg-secondary);
        margin-top: 0;
    }
}

/* チャット開始後の入力エリアの配置 */
.chat-container:not(.initial) .input-area-wrapper {
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.input-area {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.85rem;
    transition: border-color 0.2s;
    cursor: text;
}

.input-area:focus-within:not(:has(button:focus)) {
    border-color: #666666;
}

.input-area textarea {
    width: 100%;
    padding: 0;
    border: none;
    resize: none;
    height: 24px;
    min-height: 24px;
    max-height: 88px;
    overflow-y: auto;
    font-size: 0.95rem;
    line-height: 1.5;
    background-color: transparent;
    color: var(--text-primary);
    font-family: inherit;
    box-sizing: border-box;
}

.input-area textarea::placeholder {
    color: var(--text-secondary);
}

.input-area textarea:focus {
    outline: none;
}

.tool-buttons {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.25rem;
    padding-top: 0.25rem;
    border-top: 1px solid var(--border-color);
    cursor: text;
}

.tool-buttons-left {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.tool-button {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0.4rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-button:focus {
    outline: none;
}

.tool-button:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.send-button {
    background-color: var(--primary-color);
    color: white;
    padding: 0.4rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    border: none;
    width: 32px;
    height: 32px;
}

.send-button:focus {
    outline: none;
}

.send-button:hover {
    background-color: var(--input-dark-primary-color);
    transform: scale(1.05);
}

.send-button:active {
    transform: scale(0.95);
}

.send-button svg {
    width: 18px;
    height: 18px;
}

/* Markdownスタイル */
.ai-bubble-content h1,
.ai-bubble-content h2,
.ai-bubble-content h3 {
    margin-top: 1em;
    margin-bottom: 0.5em;
    font-weight: 600;
    color: var(--text-primary);
}

.ai-bubble-content h1 {
    font-size: 1.4em;
}

.ai-bubble-content h2 {
    font-size: 1.2em;
}

.ai-bubble-content h3 {
    font-size: 1.1em;
}

.ai-bubble-content p {
    margin-bottom: 0.75em;
}

.ai-bubble-content ul,
.ai-bubble-content ol {
    margin-left: 1.5em;
    margin-bottom: 0.75em;
}

.ai-bubble-content li {
    margin-bottom: 0.25em;
}

.ai-bubble-content code {
    background-color: rgba(255, 107, 53, 0.1);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
    color: var(--primary-light);
}

.ai-bubble-content pre {
    background-color: var(--bg-tertiary);
    padding: 1em;
    border-radius: 8px;
    overflow-x: auto;
    margin: 0.75em 0;
    border: 1px solid var(--border-color);
}

.ai-bubble-content pre code {
    padding: 0;
    background-color: transparent;
    color: var(--text-primary);
}

.ai-bubble-content a {
    color: var(--primary-light);
    text-decoration: underline;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        height: calc(100vh - 60px);
        /* ヘッダーの高さを考慮 */
        z-index: 50;
        top: 60px;
        /* ヘッダーの下に配置 */
    }

    .sidebar.collapsed {
        margin-left: calc(-1 * var(--sidebar-width));
    }

    .chat-container {
        margin-left: 0;
    }

    .chat-messages {
        padding: 1rem;
    }

    .ai-name {
        font-size: 2rem;
    }

    .toggle-sidebar-main {
        top: 65px;
        left: 5px;
        padding: 0.4rem;
    }
}

/* スクロールバーのスタイル */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: #404040;
}