/* --- コンポーネントスタイル --- */

/* ── メッセージ表示 ── */
.message-container {
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

.message {
    padding: 10px 15px;
    border-radius: 15px;
    max-width: var(--message-max-width);
    min-width: 30%;
    min-height: 40px;
    position: relative;
    word-wrap: break-word;
    margin-top: 35px;
    margin-bottom: 35px;
    color: var(--text-primary);
    transition:
        background-color 0.3s ease,
        color 0.3s ease,
        opacity 0.3s ease;
    z-index: 1;
    box-shadow: 0 1px 2px var(--shadow-primary);
}

.app-container.reduced-message-spacing .message {
    margin-top: 15px;
    margin-bottom: 15px;
}

.message-icon {
    width: var(--message-icon-size);
    height: var(--message-icon-size);
    border-radius: 50%;
    object-fit: cover;
    position: absolute;
    top: calc((var(--message-icon-size) / -2 + 2px) + var(--message-icon-offset-y, 0px));
    border: 1px solid var(--border-secondary);
    background-color: var(--bg-tertiary);
    box-shadow: 0 1px 2px var(--shadow-primary);
    z-index: 2;
}

.message.user .message-icon {
    right: 5px;
}

.message.model .message-icon {
    left: 5px;
}

.message-icon-name {
    position: absolute;
    font-size: var(--icon-name-font-size, 10px);
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 80px;
    z-index: 2;
    top: calc(
        var(--message-icon-size) + var(--message-icon-offset-y, 0px) -
            (var(--message-icon-size) / 4) + var(--icon-name-offset-y, 0px)
    );
    padding: 0;
    background-color: transparent;
    border-radius: 0;
    line-height: 1.3;
}

.message.user .message-icon-name {
    left: auto;
    right: calc(var(--message-icon-size) + 8px);
    text-align: right;
}

.message.model .message-icon-name {
    left: calc(var(--message-icon-size) + 8px);
    right: auto;
    text-align: left;
}

.message.user .message-icon-name.has-bubble {
    background-color: var(--user-name-bubble-bg);
    padding-top: var(--user-name-bubble-padding-y);
    padding-bottom: var(--user-name-bubble-padding-y);
    padding-left: calc(var(--icon-name-font-size, 10px) * var(--user-name-bubble-padding-x-ratio));
    padding-right: calc(var(--icon-name-font-size, 10px) * var(--user-name-bubble-padding-x-ratio));
    border-radius: var(--user-name-bubble-border-radius);
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

.message.model .message-icon-name.has-bubble {
    background-color: var(--ai-name-bubble-bg);
    padding-top: var(--ai-name-bubble-padding-y);
    padding-bottom: var(--ai-name-bubble-padding-y);
    padding-left: calc(var(--icon-name-font-size, 10px) * var(--ai-name-bubble-padding-x-ratio));
    padding-right: calc(var(--icon-name-font-size, 10px) * var(--ai-name-bubble-padding-x-ratio));
    border-radius: var(--ai-name-bubble-border-radius);
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

.message.message-hidden-by-toggle {
    visibility: hidden;
    opacity: 0;
    max-height: 0 !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    margin-top: 0 !important;
    margin-bottom: 0 !important;
    border-width: 0 !important;
    overflow: hidden;
}

.message.message-hidden-by-toggle .message-actions,
.message.message-hidden-by-toggle .message-cascade-controls,
.message.message-hidden-by-toggle .message-toggle-button,
.message.message-hidden-by-toggle .message-icon,
.message.message-hidden-by-toggle .message-icon-name,
.message.message-hidden-by-toggle .thought-summary-details {
    display: none !important;
}

.message.message-content-collapsed-fully .thought-summary-details {
    display: none !important;
}

.message:first-child {
    margin-top: 0;
}

.message pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: inherit;
    font-size: var(--message-body-font-size);
    margin: 0;
    color: inherit;
    transition: opacity 0.2s ease;
}

.message.user {
    background-color: rgba(
        var(--bg-user-message-rgb, 220, 248, 198),
        var(--message-bubble-opacity, 1)
    );
    align-self: flex-end;
    border-bottom-right-radius: 5px;

    body:not(.dark-mode):not(.pastel-pink-mode):not(.pastel-blue-mode):not(.pastel-yellow-mode):not(
            .pastel-purple-mode
        ):not(.pastel-rainbow-mode):not(.turf-mode)
        & {
        color: #333;
    }

    body.dark-mode & {
        color: #e0e0e0;
    }

    body.pastel-pink-mode &,
    body.pastel-blue-mode &,
    body.pastel-yellow-mode &,
    body.pastel-purple-mode &,
    body.pastel-rainbow-mode & {
        color: var(--text-primary);
    }
}

.message.model {
    background-color: rgba(
        var(--bg-model-message-rgb, 229, 229, 234),
        var(--message-bubble-opacity, 1)
    );
    align-self: flex-start;
    border-bottom-left-radius: 5px;
    max-width: 90%;
}

body.ai-bubble-extended .message.model {
    max-width: 100%;
}

body.user-bubble-extended .message.user {
    max-width: 100%;
}

.message.error {
    background-color: var(--bg-error-message);
    color: var(--text-error);
    align-self: flex-start;
    border-bottom-left-radius: 5px;
    margin-top: 10px;
    margin-bottom: 10px;
}

.message-content.collapsed {
    max-height: 50px;
    overflow: hidden;
    position: relative;
}

.message-content.collapsed::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 20px;
    pointer-events: none;
}

body:not(.dark-mode):not(.pastel-pink-mode):not(.pastel-blue-mode):not(.pastel-yellow-mode):not(
        .pastel-purple-mode
    ):not(.pastel-rainbow-mode)
    .message.user
    .message-content.collapsed::after {
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, var(--bg-user-message) 100%);
}

body:not(.dark-mode):not(.pastel-pink-mode):not(.pastel-blue-mode):not(.pastel-yellow-mode):not(
        .pastel-purple-mode
    ):not(.pastel-rainbow-mode)
    .message.model
    .message-content.collapsed::after {
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, var(--bg-model-message) 100%);
}

body.dark-mode .message.user .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-user-message) 100%
    );
}

body.dark-mode .message.model .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-model-message) 100%
    );
}

body.pastel-pink-mode .message.user .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-user-message) 100%
    );
}

body.pastel-pink-mode .message.model .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-model-message) 100%
    );
}

body.pastel-blue-mode .message.user .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-user-message) 100%
    );
}

body.pastel-blue-mode .message.model .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-model-message) 100%
    );
}

body.pastel-yellow-mode .message.user .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-user-message) 100%
    );
}

body.pastel-yellow-mode .message.model .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-model-message) 100%
    );
}

body.pastel-purple-mode .message.user .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-user-message) 100%
    );
}

body.pastel-purple-mode .message.model .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-model-message) 100%
    );
}

body.pastel-rainbow-mode .message.user .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-user-message) 100%
    );
}

body.pastel-rainbow-mode .message.model .message-content.collapsed::after {
    background: linear-gradient(
        to bottom,
        rgba(var(--overlay-base-rgb), 0) 0%,
        var(--bg-model-message) 100%
    );
}

.message-toggle-button {
    position: absolute;
    background-color: var(--bg-toggle-button);
    color: var(--text-toggle-button);
    border: none;
    border-radius: 4px;
    padding: 16px 1px;
    line-height: 1;
    cursor: pointer;
    z-index: 3;
    opacity: 0.6;
    transition:
        opacity 0.1s ease,
        background-color 0.1s ease;
    pointer-events: auto;
    min-width: auto;
    white-space: nowrap;
}

.message-toggle-button:hover {
    background-color: var(--bg-toggle-button-hover);
}

.message:hover .message-toggle-button.top,
.message.show-actions .message-toggle-button.top {
    opacity: calc(var(--message-toggle-button-top-opacity) + 0.1);
}

.message:hover .message-toggle-button.bottom,
.message.show-actions .message-toggle-button.bottom {
    opacity: 1;
}

.message-toggle-button.top {
    top: 3px;
    right: 3px;
    left: auto;
    z-index: 3;
    font-size: var(--message-toggle-button-top-font-size);
    width: var(--message-toggle-button-top-width);
    height: var(--message-toggle-button-top-height);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: var(--message-toggle-button-top-opacity);
}

.message-toggle-button.bottom {
    position: static;
    flex-shrink: 0;
    padding: 4px 10px;
    font-size: var(--message-toggle-button-bottom-font-size);
    line-height: 1.5;
}

.message-actions {
    position: absolute;
    bottom: -30px;
    display: none;
    flex-wrap: nowrap;
    gap: 5px;
    background-color: rgba(var(--message-actions-base-rgb), var(--message-actions-bg-opacity));
    padding: 1px 1px 1px 1px;
    border-radius: 5px;
    box-shadow: 0 1px 3px var(--shadow-primary);
    z-index: 2;
    transition:
        opacity 0.2s ease,
        background-color 0.3s ease;
}

.message.user .message-actions {
    right: 0;
    left: auto;
    justify-content: flex-end;
}

.message.model .message-actions {
    left: 0;
    right: auto;
    justify-content: flex-start;
}

.message-actions button {
    background-color: var(--bg-button-action);
    color: var(--text-light);
    padding: 4px 10px;
    font-size: 12px;
    border-radius: 4px;
    white-space: nowrap;
    line-height: 1.5;
}

body.pastel-yellow-mode .message-actions button,
body.pastel-yellow-mode .message-cascade-controls button,
body.pastel-yellow-mode .message-edit-actions button {
    color: var(--text-light);
}

.message-actions button:hover {
    background-color: var(--bg-button-action-hover);
}

.message-actions .js-edit-btn {
    background-color: var(--bg-button-edit);
}

.message-actions .js-edit-btn:hover {
    background-color: var(--bg-button-edit-hover);
}

.message-actions .js-delete-btn {
    background-color: var(--bg-button-delete);
}

.message-actions .js-delete-btn:hover {
    background-color: var(--bg-button-delete-hover);
}

.message-actions .js-retry-btn {
    background-color: var(--bg-button-retry);
}

.message-actions .js-retry-btn:hover {
    background-color: var(--bg-button-retry-hover);
}

.message-actions .js-copy-btn {
    background-color: var(--bg-button-copy);
}

.message-actions .js-copy-btn:hover {
    background-color: var(--bg-button-copy-hover);
}

.message-cascade-controls {
    position: absolute;
    top: -35px;
    left: 0;
    display: none;
    align-items: center;
    flex-wrap: nowrap;
    gap: 5px;
    background-color: rgba(var(--message-actions-base-rgb), var(--message-actions-bg-opacity));
    padding: 5px 8px 10px 8px;
    border-radius: 5px;
    box-shadow: 0 -1px 3px var(--shadow-primary);
    z-index: 2;
    transition:
        opacity 0.2s ease,
        background-color 0.3s ease;
}

.message:hover .message-actions,
.message.show-actions .message-actions {
    display: flex;
}

.message.model:hover .message-cascade-controls,
.message.model.show-actions .message-cascade-controls {
    display: flex;
}

.message-cascade-controls button {
    background-color: var(--bg-cascade-button);
    color: var(--text-light);
    padding: 4px 8px;
    font-size: 14px;
    border-radius: 4px;
    line-height: 1;
    min-width: 25px;
}

.message-cascade-controls button:hover:not(:disabled) {
    background-color: var(--bg-cascade-button-hover);
}

.message-cascade-controls button:disabled {
    background-color: var(--bg-button-disabled);
    cursor: not-allowed;
    opacity: 0.5;
}

.message-cascade-controls .cascade-indicator {
    font-size: 11px;
    color: var(--text-cascade-indicator);
    padding: 0 5px;
    white-space: nowrap;
    font-weight: 500;
}

.message-cascade-controls .cascade-delete-btn {
    background-color: var(--bg-cascade-delete-button);
    margin-left: 5px;
}

.message-cascade-controls .cascade-delete-btn:hover {
    background-color: var(--bg-cascade-delete-button-hover);
}

.message.editing pre {
    opacity: 0;
    height: 0;
    overflow: hidden;
    pointer-events: none;
}

.message.editing .message-actions,
.message.editing .message-cascade-controls,
.message.editing .message-toggle-button {
    opacity: 0;
    pointer-events: none;
    display: none !important;
}

.message.editing.show-actions .message-actions,
.message.editing.show-actions .message-cascade-controls,
.message.editing.show-actions .message-toggle-button {
    display: none !important;
}

.message.retrying-hidden {
    display: none !important;
}

.message-edit-area {
    margin-top: 5px;
}

.message-edit-area textarea {
    min-height: 60px;
    margin-bottom: 5px;
    width: 100%;
}

.message-edit-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 5px;
}

.message-edit-actions button {
    padding: 4px 10px;
    font-size: 12px;
}

.message-edit-actions .save-edit-btn {
    background-color: var(--bg-button-save);
}

.message-edit-actions .save-edit-btn:hover {
    background-color: var(--bg-button-save-hover);
}

.message-edit-actions .cancel-edit-btn {
    background-color: var(--bg-button-cancel);
}

.message-edit-actions .cancel-edit-btn:hover {
    background-color: var(--bg-button-cancel-hover);
}

/* ── チャット入力エリア ── */
.chat-input-area {
    display: flex;
    align-items: flex-end;
    padding: 10px 15px;
    border-top: 1px solid var(--border-primary);
    flex-shrink: 0;
    box-sizing: border-box;
    transition:
        background-color 0.3s ease,
        border-color 0.3s ease,
        padding 0.2s ease,
        gap 0.2s ease;
    gap: 10px;
}

.footer-action-button {
    height: 40px;
    width: 40px;
    padding: 0;
    font-size: 20px;
    font-weight: bold;
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--bg-button-action);
    color: var(--text-light);
    border-radius: 5px;
    border: none;
    cursor: pointer;
    transition:
        background-color 0.2s ease,
        height 0.2s ease,
        width 0.2s ease,
        font-size 0.2s ease;
}

.footer-action-button:hover:not(:disabled) {
    background-color: var(--bg-button-action-hover);
}

body.pastel-yellow-mode .footer-action-button {
    color: #424242;
}

.chat-input-area button#attach-file-btn {
    position: relative;
}

.chat-input-area button#paste-to-input-btn {
    font-size: 16px;
}

.api-provider-toggle-btn {
    font-weight: 900;
    font-family:
        'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    font-size: 16px;
    min-width: 30px;
    padding: 5px;
    transition:
        font-size 0.2s ease,
        min-width 0.2s ease,
        height 0.2s ease;
}

.app-header .api-provider-toggle-btn {
    background-color: rgba(255, 255, 255, 0.2) !important;
}

.app-header .api-provider-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.4) !important;
}

body.pastel-yellow-mode .app-header .api-provider-toggle-btn {
    color: #424242;
    background-color: rgba(0, 0, 0, 0.1) !important;
}

body.pastel-yellow-mode .app-header .api-provider-toggle-btn:hover {
    background-color: rgba(0, 0, 0, 0.2) !important;
}

.app-header .api-provider-toggle-btn.gemini {
    background-color: #ffffff !important;
    color: #8a75d2 !important;
}

.app-header .api-provider-toggle-btn.deepseek {
    background-color: #4d6bff !important;
    color: #ffffff !important;
}

.app-header .api-provider-toggle-btn.claude {
    background-color: #d97757 !important;
    color: #efede5 !important;
}

.app-header .api-provider-toggle-btn.openai {
    background-color: #10a37f !important;
    color: #ffffff !important;
}

.app-header .api-provider-toggle-btn.xai {
    background-color: #000000 !important;
    color: #ffffff !important;
}

.app-header .api-provider-toggle-btn.llmaggregator {
    background-color: #e53935 !important;
    color: #ffffff !important;
}

.app-header .api-provider-toggle-btn.dummy {
    background-color: #ffd700 !important;
    color: #ffffff !important;
}

.app-header .api-provider-toggle-btn.dummy:hover {
    background-color: #ffc700 !important;
}

body.dark-mode .app-header .api-provider-toggle-btn.gemini:hover {
    background-color: rgba(255, 255, 255, 0.9) !important;
    color: #8a75d2 !important;
}

body.dark-mode .app-header .api-provider-toggle-btn.deepseek:hover {
    background-color: rgba(77, 107, 255, 0.9) !important;
    color: #ffffff !important;
}

body.dark-mode .app-header .api-provider-toggle-btn.claude:hover {
    background-color: rgba(217, 119, 87, 0.9) !important;
    color: #efede5 !important;
}

body.dark-mode .app-header .api-provider-toggle-btn.openai:hover {
    background-color: rgba(16, 163, 127, 0.9) !important;
    color: #ffffff !important;
}

body.dark-mode .app-header .api-provider-toggle-btn.xai:hover {
    background-color: rgba(0, 0, 0, 0.9) !important;
    color: #ffffff !important;
}

body.dark-mode .app-header .api-provider-toggle-btn.llmaggregator:hover {
    background-color: #c62828 !important;
}

.chat-input-area .api-provider-toggle-btn.gemini {
    background-color: #ffffff !important;
    color: #8a75d2 !important;
}

.chat-input-area .api-provider-toggle-btn.deepseek {
    background-color: #4d6bff !important;
    color: #ffffff !important;
}

.chat-input-area .api-provider-toggle-btn.claude {
    background-color: #d97757 !important;
    color: #efede5 !important;
}

.chat-input-area .api-provider-toggle-btn.openai {
    background-color: #10a37f !important;
    color: #ffffff !important;
}

.chat-input-area .api-provider-toggle-btn.xai {
    background-color: #000000 !important;
    color: #ffffff !important;
}

.chat-input-area .api-provider-toggle-btn.llmaggregator {
    background-color: #e53935 !important;
    color: #ffffff !important;
}

.chat-input-area .api-provider-toggle-btn.dummy {
    background-color: #ffd700 !important;
    color: #ffffff !important;
}

.attachment-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: var(--badge-size);
    height: var(--badge-size);
    background-color: var(--badge-color);
    border-radius: 50%;
    border: 1px solid var(--bg-primary);
    display: none;
    pointer-events: none;
}

.chat-input-area button#attach-file-btn.has-attachments .attachment-badge {
    display: block;
}

.chat-input-area textarea {
    flex-grow: 1;
    min-height: 40px;
    max-height: 120px;
    height: 40px;
    resize: none;
    margin-bottom: 0;
    padding: 8px 10px;
    overflow-y: auto;
    transition:
        min-height 0.2s ease,
        height 0.2s ease,
        padding 0.2s ease,
        font-size 0.2s ease;
}

.chat-input-area button#send-button {
    height: 40px;
    width: 40px;
    padding: 0;
    font-size: 18px;
    font-weight: bold;
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    transition:
        background-color 0.2s ease,
        height 0.2s ease,
        width 0.2s ease,
        font-size 0.2s ease;
}

.chat-input-area button#send-button.sending {
    background-color: #ffc107;
    color: #333;
}

.chat-input-area button#send-button.sending:hover {
    background-color: #ffa000;
}

body.dark-mode .chat-input-area button#send-button.sending {
    background-color: #ffd60a;
    color: #1a1a1a;
}

body.dark-mode .chat-input-area button#send-button.sending:hover {
    background-color: #ffca28;
}

body.pastel-pink-mode .chat-input-area button#send-button.sending,
body.pastel-blue-mode .chat-input-area button#send-button.sending,
body.pastel-yellow-mode .chat-input-area button#send-button.sending,
body.pastel-purple-mode .chat-input-area button#send-button.sending,
body.pastel-rainbow-mode .chat-input-area button#send-button.sending {
    background-color: #ffee88;
    color: #554400;
}

body.pastel-pink-mode .chat-input-area button#send-button.sending:hover,
body.pastel-blue-mode .chat-input-area button#send-button.sending:hover,
body.pastel-yellow-mode .chat-input-area button#send-button.sending:hover,
body.pastel-purple-mode .chat-input-area button#send-button.sending:hover,
body.pastel-rainbow-mode .chat-input-area button#send-button.sending:hover {
    background-color: #ffe766;
}

#loading-indicator {
    position: fixed;
    bottom: 65px;
    right: 20px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 11px;
    font-style: normal;
    font-weight: 500;
    z-index: 3;
    box-shadow: 0 2px 5px var(--shadow-primary);
    transition:
        opacity 0.3s ease,
        transform 0.3s ease,
        visibility 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    pointer-events: none;
}

#loading-indicator:not(.hidden) {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

body.dark-mode #loading-indicator {
    background-color: var(--bg-input);
    color: var(--text-secondary);
    box-shadow: 0 2px 6px var(--shadow-secondary);
}

/* ── Markdown レンダリングスタイル ── */
.message-content {
    font-size: var(--message-body-font-size);
    line-height: 1.6;
    color: inherit;
    word-wrap: break-word;
    overflow-wrap: break-word;
    position: relative;
    z-index: 1;
}

/* Keep native text selection available in iOS/Android chat messages. */
@media (hover: none), (pointer: coarse) {
    #chat-screen .message-content,
    #chat-screen .thought-summary-content {
        -webkit-user-select: text;
        user-select: text;
        -webkit-touch-callout: default;
    }
}

.message-content > *:first-child {
    margin-top: 0;
}

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

.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4,
.message-content h5,
.message-content h6 {
    margin-top: 1.2em;
    margin-bottom: 0.6em;
    font-weight: bold;
    line-height: 1.3;
    color: inherit;
}

.message-content h1 {
    font-size: 1.8em;
}

.message-content h2 {
    font-size: 1.5em;
}

.message-content h3 {
    font-size: 1.3em;
}

.message-content h4 {
    font-size: 1.1em;
}

.message-content p {
    margin-bottom: 0.8em;
}

.message-content ul,
.message-content ol {
    margin-bottom: 0.8em;
    padding-left: 2em;
}

.message-content li {
    margin-bottom: 0.3em;
}

.message-content li > ul,
.message-content li > ol {
    margin-top: 0.3em;
    margin-bottom: 0.3em;
}

.message-content pre {
    background-color: var(--bg-secondary);
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
    margin: 1em 0;
    font-family: var(--font-family);
    font-size: var(--code-block-font-size);
    border: 1px solid var(--border-tertiary);
    color: var(--text-secondary);
    position: relative;
}

.message-content pre .code-copy-button {
    position: absolute;
    bottom: 5px;
    right: 5px;
    padding: 3px 8px;
    font-size: 10px;
    background-color: var(--bg-code-copy-button);
    color: var(--text-code-copy-button);
    border: none;
    border-radius: 3px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.message-content pre:hover .code-copy-button {
    opacity: 1;
}

.message-content pre .code-copy-button:hover {
    background-color: var(--bg-code-copy-button-hover);
}

body.pastel-yellow-mode .message-content pre .code-copy-button {
    color: var(--text-light);
}

.message.user .message-content pre {
    background-color: transparent;
    padding: 0;
    margin: 0;
    border: none;
    border-radius: 0;
    color: inherit;
    font-family: inherit;
    font-size: var(--message-body-font-size);
    line-height: inherit;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-x: visible;
    position: static;
}

.message.user .message-content pre .code-copy-button {
    display: none;
}

.message-content code:not(pre > code) {
    background-color: var(--bg-secondary);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
    font-size: 0.9em;
    border: 1px solid var(--border-tertiary);
    color: var(--text-secondary);
}

.message-content blockquote {
    margin: 1em 0;
    padding-left: 1em;
    border-left: 4px solid var(--border-primary);
    color: var(--text-secondary);
}

.message-content blockquote > *:first-child {
    margin-top: 0;
}

.message-content blockquote > *:last-child {
    margin-bottom: 0;
}

.message-content a {
    color: var(--text-link);
    text-decoration: underline;
}

.message-content strong {
    font-weight: bold;
}

.message-content em {
    font-style: italic;
}

.message-content table {
    border-collapse: collapse;
    margin: 1em 0;
    width: auto;
    border: 1px solid var(--border-secondary);
}

.message-content th,
.message-content td {
    border: 1px solid var(--border-secondary);
    padding: 6px 10px;
    text-align: left;
}

.message-content th {
    background-color: var(--bg-tertiary);
    font-weight: bold;
}

.message-content hr {
    border: none;
    border-top: 1px solid var(--border-secondary);
    margin: 1.5em 0;
}

.message-content img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 12px auto;
    border-radius: 8px;
    border: 1px solid var(--border-secondary);
    background-color: var(--bg-tertiary);
    box-shadow: 0 1px 3px var(--shadow-primary);
    cursor: pointer;
    transition:
        opacity 0.3s ease,
        transform 0.2s ease;
}

.message-content img:hover {
    opacity: 0.9;
    transform: scale(1.01);
}

body.dark-mode .message-content pre {
    background-color: var(--bg-tertiary);
    border-color: var(--border-primary);
    color: var(--text-secondary);
}

body.dark-mode .message-content code:not(pre > code) {
    background-color: var(--bg-tertiary);
    border-color: var(--border-primary);
    color: var(--text-secondary);
}

body.dark-mode .message-content blockquote {
    border-left-color: var(--border-primary);
    color: var(--text-secondary);
}

body.dark-mode .message-content a {
    color: var(--text-link);
}

body.dark-mode .message-content table,
body.dark-mode .message-content th,
body.dark-mode .message-content td {
    border-color: var(--border-primary);
}

body.dark-mode .message-content th {
    background-color: var(--bg-secondary);
}

body.dark-mode .message-content hr {
    border-top-color: var(--border-primary);
}

body.pastel-pink-mode .message-content pre,
body.pastel-blue-mode .message-content pre,
body.pastel-yellow-mode .message-content pre,
body.pastel-purple-mode .message-content pre,
body.pastel-rainbow-mode .message-content pre {
    background-color: var(--bg-tertiary);
    border-color: var(--border-secondary);
    color: var(--text-secondary);
}

body.pastel-pink-mode .message-content code:not(pre > code),
body.pastel-blue-mode .message-content code:not(pre > code),
body.pastel-yellow-mode .message-content code:not(pre > code),
body.pastel-purple-mode .message-content code:not(pre > code),
body.pastel-rainbow-mode .message-content code:not(pre > code) {
    background-color: var(--bg-tertiary);
    border-color: var(--border-secondary);
    color: var(--text-secondary);
}

body.pastel-pink-mode .message-content blockquote,
body.pastel-blue-mode .message-content blockquote,
body.pastel-yellow-mode .message-content blockquote,
body.pastel-purple-mode .message-content blockquote,
body.pastel-rainbow-mode .message-content blockquote {
    border-left-color: var(--border-primary);
    color: var(--text-secondary);
}

body.pastel-pink-mode .message-content th,
body.pastel-blue-mode .message-content th,
body.pastel-yellow-mode .message-content th,
body.pastel-purple-mode .message-content th,
body.pastel-rainbow-mode .message-content th {
    background-color: var(--bg-secondary);
}

.message-actions .token-count-display {
    font-size: 0.7rem;
    color: var(--text-secondary);
    vertical-align: middle;
    line-height: 1.5;
    white-space: nowrap;
}

/* ── 思考プロセス・引用・添付ファイル表示 ── */
.thought-summary-details {
    margin-bottom: 10px;
    font-size: 13px;
    border: 1px solid var(--border-tertiary);
    border-radius: 5px;
    background-color: rgba(var(--bg-tertiary-rgb), var(--thought-summary-opacity));
    transition:
        background-color 0.3s ease,
        border-color 0.3s ease,
        opacity 0.3s ease;
}

.thought-summary-details summary {
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    list-style: none;
    padding: 6px 10px;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    display: flex;
    align-items: center;
    gap: 5px;
    user-select: none;
}

.thought-summary-details summary::-webkit-details-marker {
    display: none;
}

.thought-summary-details summary::marker {
    display: none;
}

.thought-summary-details summary::before {
    content: '💭';
    font-size: 14px;
    display: inline-block;
}

.thought-summary-details[open] summary {
    border-bottom: 1px solid var(--border-tertiary);
}

.thought-summary-content {
    padding: 8px 10px;
    font-size: var(--thought-summary-font-size);
    line-height: 1.5;
    color: var(--text-primary);
    word-wrap: break-word;
    overflow-wrap: break-word;
    cursor: pointer;
}

.thought-summary-content > *:first-child {
    margin-top: 0;
}

.thought-summary-content > *:last-child {
    margin-bottom: 0;
}

.thought-summary-content ul,
.thought-summary-content ol {
    margin-left: 1em;
}

body.dark-mode .thought-summary-details {
    border-color: var(--border-primary);
}

body.dark-mode .thought-summary-details summary {
    color: var(--text-secondary);
}

body.dark-mode .thought-summary-details[open] summary {
    border-bottom-color: var(--border-primary);
}

body.dark-mode .thought-summary-content {
    color: var(--text-primary);
}

.thought-summary-content pre {
    background-color: var(--bg-secondary);
    padding: 8px;
    border-radius: 4px;
    overflow-x: auto;
    margin: 0.8em 0;
    font-family: var(--font-family);
    font-size: var(--thought-summary-font-size);
    border: 1px solid var(--border-tertiary);
    color: var(--text-secondary);
    cursor: text;
}

body.dark-mode .thought-summary-content pre {
    background-color: var(--bg-tertiary);
    border-color: var(--border-primary);
    color: var(--text-secondary);
}

.thought-summary-content code:not(pre > code) {
    background-color: var(--bg-secondary);
    padding: 0.1em 0.3em;
    border-radius: 3px;
    font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
    font-size: 0.85em;
    border: 1px solid var(--border-tertiary);
    color: var(--text-secondary);
}

body.dark-mode .thought-summary-content code:not(pre > code) {
    background-color: var(--bg-tertiary);
    border-color: var(--border-primary);
    color: var(--text-secondary);
}

.citation-details {
    margin-top: 10px;
    font-size: 12px;
    border-top: 1px dashed var(--border-secondary);
    padding-top: 8px;
}

.citation-details summary {
    cursor: pointer;
    font-weight: normal;
    color: var(--text-secondary);
    list-style: none;
    display: inline-block;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

.citation-details summary::-webkit-details-marker {
    display: none;
}

.citation-details summary::marker {
    display: none;
}

.citation-details summary:hover {
    text-decoration: underline;
}

.citation-list {
    list-style: none;
    padding-left: 0;
    margin-top: 8px;
    margin-bottom: 0;
}

.citation-list li {
    margin-bottom: 5px;
    overflow-wrap: break-word;
}

.citation-list li a {
    color: var(--text-link);
    text-decoration: none;
    display: block;
}

.citation-list li a:hover {
    text-decoration: underline;
}

body.dark-mode .citation-details {
    border-top-color: var(--border-primary);
}

body.dark-mode .citation-details summary {
    color: var(--text-secondary);
}

body.dark-mode .citation-list li a {
    color: var(--text-link);
}

.attachment-details {
    margin-top: 10px;
    font-size: 12px;
    border: 1px solid var(--border-attachment-details);
    border-radius: 5px;
    background-color: var(--bg-attachment-details);
    transition:
        background-color 0.3s ease,
        border-color 0.3s ease;
}

.attachment-details summary {
    cursor: pointer;
    font-weight: normal;
    color: var(--text-attachment-summary);
    list-style: none;
    padding: 5px 10px;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    display: flex;
    align-items: center;
    gap: 5px;
}

.attachment-details summary::-webkit-details-marker {
    display: none;
}

.attachment-details summary::marker {
    display: none;
}

.attachment-details summary::before {
    content: '📎';
    font-size: 14px;
    display: inline-block;
}

.attachment-details[open] summary {
    border-bottom: 1px solid var(--border-attachment-details);
}

.attachment-list {
    list-style: none;
    padding: 8px 10px 5px 10px;
    margin: 0;
}

.attachment-list li {
    margin-bottom: 4px;
    font-size: 10px;
    color: var(--text-attachment-filename);
    overflow-wrap: break-word;
    line-height: 1.4;
}

.attachment-actions {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-left: auto;
}

.attachment-actions button {
    padding: 2px 6px;
    font-size: 10px;
    border-radius: 3px;
    line-height: 1.2;
    min-width: 0;
}

.attachment-preview-btn {
    background-color: var(--bg-button-paste);
}

.attachment-preview-btn:hover {
    background-color: var(--bg-button-paste-hover);
}

.attachment-edit-btn {
    background-color: var(--bg-button-edit);
}

.attachment-edit-btn:hover {
    background-color: var(--bg-button-edit-hover);
}

.attachment-remove-btn {
    background-color: var(--bg-button-delete);
}

.attachment-remove-btn:hover {
    background-color: var(--bg-button-delete-hover);
}

.add-more-attachments-btn {
    display: block;
    width: calc(100% - 10px);
    margin: 8px 5px 0 5px;
    padding: 4px;
    font-size: 12px;
    background-color: var(--bg-button-save);
}

.add-more-attachments-btn:hover {
    background-color: var(--bg-button-save-hover);
}

.attachment-list-item-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.attachment-list-item-name {
    flex-grow: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-right: 10px;
}

/* ── Mermaid 図形描画 ── */
.mermaid-container {
    transition:
        background-color 0.3s ease,
        border-color 0.3s ease;
}

.mermaid-diagram svg {
    max-width: 100% !important;
    height: auto !important;
}

.mermaid-toggle-button:hover {
    background-color: var(--bg-button-action-hover) !important;
}

.mermaid-copy-button:hover {
    background-color: var(--bg-button-copy-hover) !important;
}

body:not(.dark-mode):not(.pastel-pink-mode):not(.pastel-blue-mode):not(.pastel-yellow-mode):not(
        .pastel-purple-mode
    ):not(.pastel-rainbow-mode)
    .mermaid-diagram {
    background-color: #ffffff !important;
}

body.dark-mode .mermaid-diagram {
    background-color: #2a2a2a !important;
}

body.dark-mode .mermaid-diagram svg {
    filter: none;
}

body.pastel-pink-mode .mermaid-diagram {
    background-color: #fff8fa !important;
}

body.pastel-blue-mode .mermaid-diagram {
    background-color: #f8fcff !important;
}

body.pastel-yellow-mode .mermaid-diagram {
    background-color: #fffef8 !important;
}

body.pastel-purple-mode .mermaid-diagram {
    background-color: #faf8ff !important;
}

body.pastel-rainbow-mode .mermaid-diagram {
    background-color: #fefefe !important;
}

body.dark-mode .mermaid-diagram svg .node rect,
body.dark-mode .mermaid-diagram svg .node circle,
body.dark-mode .mermaid-diagram svg .node ellipse,
body.dark-mode .mermaid-diagram svg .node polygon {
    fill: #404040 !important;
    stroke: #666666 !important;
}

body.dark-mode .mermaid-diagram svg .node .label,
body.dark-mode .mermaid-diagram svg text {
    fill: #e0e0e0 !important;
}

body.dark-mode .mermaid-diagram svg .edgePath .path {
    stroke: #888888 !important;
}

body.dark-mode .mermaid-diagram svg .arrowheadPath {
    fill: #888888 !important;
}

body.pastel-pink-mode .mermaid-diagram svg .node rect,
body.pastel-pink-mode .mermaid-diagram svg .node circle,
body.pastel-pink-mode .mermaid-diagram svg .node ellipse,
body.pastel-pink-mode .mermaid-diagram svg .node polygon {
    fill: #ffe4f0 !important;
    stroke: #ff8fab !important;
}

body.pastel-blue-mode .mermaid-diagram svg .node rect,
body.pastel-blue-mode .mermaid-diagram svg .node circle,
body.pastel-blue-mode .mermaid-diagram svg .node ellipse,
body.pastel-blue-mode .mermaid-diagram svg .node polygon {
    fill: #e8f4ff !important;
    stroke: #87cefa !important;
}

body.pastel-yellow-mode .mermaid-diagram svg .node rect,
body.pastel-yellow-mode .mermaid-diagram svg .node circle,
body.pastel-yellow-mode .mermaid-diagram svg .node ellipse,
body.pastel-yellow-mode .mermaid-diagram svg .node polygon {
    fill: #fff8e1 !important;
    stroke: #ffd700 !important;
}

body.pastel-purple-mode .mermaid-diagram svg .node rect,
body.pastel-purple-mode .mermaid-diagram svg .node circle,
body.pastel-purple-mode .mermaid-diagram svg .node ellipse,
body.pastel-purple-mode .mermaid-diagram svg .node polygon {
    fill: #f3e5f5 !important;
    stroke: #ab47bc !important;
}

body.pastel-rainbow-mode .mermaid-diagram svg .node rect,
body.pastel-rainbow-mode .mermaid-diagram svg .node circle,
body.pastel-rainbow-mode .mermaid-diagram svg .node ellipse,
body.pastel-rainbow-mode .mermaid-diagram svg .node polygon {
    fill: #f0f8ff !important;
    stroke: #4a90e2 !important;
}

/* ── ターフモード・ダズルパターン ── */
body.turf-mode .app-header,
body.turf-mode button {
    background-image:
        conic-gradient(
            from 12deg at 28% 34%,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 1)) 0 62deg,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.8)) 62deg 66deg,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.5)) 66deg 69deg,
            transparent 69deg 360deg
        ),
        conic-gradient(
            from -24deg at 72% 28%,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.8)) 0 82deg,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.6)) 82deg 87deg,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.35)) 87deg 90deg,
            transparent 90deg 360deg
        ),
        conic-gradient(
            from 140deg at 22% 78%,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.65)) 0 54deg,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.5)) 54deg 57deg,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.3)) 57deg 60deg,
            transparent 60deg 360deg
        ),
        conic-gradient(
            from 60deg at 82% 66%,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.7)) 0 69deg,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.5)) 69deg 72deg,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.3)) 72deg 75deg,
            transparent 75deg 360deg
        ),
        conic-gradient(
            from -40deg at 50% 50%,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.55)) 0 102deg,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.4)) 102deg 106deg,
            rgba(0, 0, 0, calc(var(--dazzle-dark) * 0.25)) 106deg 110deg,
            transparent 110deg 360deg
        );

    background-blend-mode: multiply, multiply, multiply, multiply, multiply;

    background-size:
        var(--dazzle-size) var(--dazzle-size),
        var(--dazzle-size) var(--dazzle-size),
        var(--dazzle-size) var(--dazzle-size),
        var(--dazzle-size) var(--dazzle-size),
        var(--dazzle-size) var(--dazzle-size);
    background-position: center, center, center, center, center;
    background-repeat: no-repeat, no-repeat, no-repeat, no-repeat, no-repeat;

    transition:
        background-image 0.25s ease,
        border-color 0.15s ease,
        color 0.15s ease;
}

body.turf-mode button:hover:not(:disabled) {
    --dazzle-dark: 0.14;
}

body.turf-mode button:active:not(:disabled) {
    --dazzle-dark: 0.16;
    transform: none;
}

body.turf-mode button:disabled {
    opacity: 0.55;
    background-image: none;
    cursor: not-allowed;
}

body.turf-mode .app-header:hover,
body.turf-mode .app-header:active {
    transform: none;
}

@supports not (
    (background: conic-gradient(from 0deg, #000 0 90deg, transparent 90deg)) and
        (background-blend-mode: multiply)
) {
    body.turf-mode .app-header,
    body.turf-mode button {
        background-image: linear-gradient(
            135deg,
            rgba(0, 0, 0, 0.1) 0 45%,
            transparent 45% 55%,
            rgba(0, 0, 0, 0.08) 55% 100%
        );
        background-size: 200% 200%;
        background-position: center;
    }
    body.turf-mode button:hover:not(:disabled) {
        filter: contrast(1.05);
    }
}

body.turf-mode button:nth-of-type(6n + 1) {
    background-position:
        15% 88%,
        92% 18%,
        45% 63%,
        7% 39%,
        68% 51%;
    background-size:
        2446% 3546%,
        2821% 2821%,
        3389% 3389%,
        2173% 2173%,
        3565% 3565%;
}
body.turf-mode button:nth-of-type(6n + 2) {
    background-position:
        81% 25%,
        29% 95%,
        5% 49%,
        98% 71%,
        42% 13%;
    background-size:
        2618% 2618%,
        3032% 3032%,
        2788% 2788%,
        3950% 3950%,
        2294% 2294%;
}
body.turf-mode button:nth-of-type(6n + 3) {
    background-position:
        58% 9%,
        19% 82%,
        88% 34%,
        31% 55%,
        66% 97%;
    background-size:
        3536% 3536%,
        2955% 2955%,
        2081% 2081%,
        3829% 3829%,
        2407% 2407%;
}
body.turf-mode button:nth-of-type(6n + 4) {
    background-position:
        23% 69%,
        77% 12%,
        11% 85%,
        91% 28%,
        50% 48%;
    background-size:
        2792% 2792%,
        3111% 3111%,
        2543% 2543%,
        3926% 3926%,
        2330% 2330%;
}
body.turf-mode button:nth-of-type(6n + 5) {
    background-position:
        96% 41%,
        38% 8%,
        62% 79%,
        14% 33%,
        84% 60%;
    background-size:
        3467% 3467%,
        2884% 2884%,
        2149% 2149%,
        3702% 3702%,
        2605% 2605%;
}
body.turf-mode button:nth-of-type(6n) {
    background-position:
        4% 59%,
        89% 21%,
        27% 93%,
        73% 16%,
        53% 75%;
    background-size:
        2676% 2676%,
        3214% 3214%,
        2960% 2960%,
        3898% 3898%,
        2495% 2495%;
}

body.turf-mode .message.user {
    border: 2px solid #66d713;
    color: #7a4114;
}
body.turf-mode .message.model {
    border: 2px solid #fd6ea3;
    color: #7a4114;
}
body.turf-mode .mermaid-diagram {
    background-color: #f8fff8 !important;
}
body.turf-mode .mermaid-diagram svg .node rect,
body.turf-mode .mermaid-diagram svg .node circle,
body.turf-mode .mermaid-diagram svg .node ellipse,
body.turf-mode .mermaid-diagram svg .node polygon {
    fill: #e8f5e9 !important;
    stroke: #4caf50 !important;
}

/* ── Elevation コールアウト ── */
body.elevation-enabled .message {
    box-shadow: var(--elevation-shadow-1);
    transition:
        box-shadow 0.2s ease-out,
        transform 0.2s ease-out;
}
body.elevation-hover-enabled.elevation-enabled .message:hover {
    box-shadow: var(--elevation-shadow-2);
    transform: translateY(-1px);
}

body.elevation-enabled button,
body.elevation-enabled .settings-action-button {
    box-shadow: var(--elevation-shadow-1);
    transition:
        box-shadow 0.2s ease-out,
        transform 0.2s ease-out,
        background-color 0.2s ease;
}
body.elevation-hover-enabled.elevation-enabled button:not(:disabled):hover,
body.elevation-hover-enabled.elevation-enabled .settings-action-button:not(:disabled):hover {
    box-shadow: var(--elevation-shadow-2);
    transform: translateY(-1px);
}
body.elevation-hover-enabled.elevation-enabled button:not(:disabled):active,
body.elevation-hover-enabled.elevation-enabled .settings-action-button:not(:disabled):active {
    box-shadow: var(--elevation-shadow-inset);
    transform: translateY(1px);
}

body.turf-mode.elevation-enabled .message {
    border: 2px solid transparent;
}
body.turf-mode.elevation-enabled .message.user {
    border-color: #66d713;
}
body.turf-mode.elevation-enabled .message.model {
    border-color: #fd6ea3;
}

/* --- チャット画面文字サイズ調整用CSS --- */
.message-content {
    font-size: calc(var(--message-body-font-size) * var(--chat-ui-scale)) !important;
}
.message-content pre {
    font-size: calc(var(--code-block-font-size) * var(--chat-ui-scale)) !important;
}
.thought-summary-content,
.thought-summary-content pre {
    font-size: calc(var(--thought-summary-font-size) * var(--chat-ui-scale)) !important;
}