/*
 * chat-message-container.css
 * AI/user message bubble + message list layout.
 * Migrated 2026-04-20 from styles.css lines 1796-2118 (inclusive).
 * Hex colors replaced with chat-tokens.css variables where possible.
 */

/* 聊天訊息區域：居中顯示，有最大寬度限制 */
.chat-messages {
    flex: 1;
    padding: var(--spacing-xl) var(--spacing-2xl);
    /* 底部增加 padding,避免內容被輸入框遮住（增加到 300px 確保執行按鈕完全可見）*/
    padding-bottom: 300px;  /* 輸入框高度 + 執行按鈕高度 + 額外空間 */
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: var(--chat-max-width);
    margin: 0 auto;
    width: 100%;
}

/* ========== 聊天訊息氣泡 — ChatGPT 簡約風 v10 ========== */
.message {
    display: flex;
    gap: 10px;
    max-width: 100%;
    animation: messageSlideIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    align-items: flex-start;
}

.message:not(.user) {
    width: 100%;
}

.message.user {
    width: 100%;
    justify-content: flex-end;
    animation: userMessageSlideIn 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

/* AI 頭像 — Claude-flat-flow 2026-04-20: 全部隱藏（無框流動風） */
.message > .message-avatar,
.message:not(.user) > .message-avatar {
    display: none;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--color-border-default);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.message-avatar svg {
    width: 28px;
    height: 28px;
    color: white;
}

/* 走勢線閃爍動畫 */
@keyframes trendShimmer {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

.message-avatar .trend-line {
    animation: trendShimmer 2s ease-in-out infinite;
}

.message.user .message-avatar {
    display: none;
}

/* 訊息主體容器 */
.message-body {
    flex: 1;
    min-width: 0;
}

.message.user .message-body {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    flex: none;
    max-width: 70%;
}

/* AI 回應：Claude-flat-flow 2026-04-20: 純文字流，無 bubble、無左邊裝飾線 */
.message:not(.user) .message-content {
    width: 100%;
    border-radius: 0;
    padding: 0;
    overflow: visible;
    background: transparent;
    border: none;
    box-shadow: none;
}

.message:not(.user) .message-content::before {
    display: none !important;
}

/* 訊息內容 — 基礎 (Claude-tighten 2026-04-20: 行高 1.75 → 1.65 緊湊) */
.message-content {
    background: transparent;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 16px;
    border: none;
    position: relative;
    box-shadow: none;
    font-size: 14px;
    line-height: 1.65;
    color: var(--color-text-primary);
    letter-spacing: 0.005em;
}

.message-content::before {
    display: none;
}

/* 用戶訊息氣泡 — Claude-style 柔和淡橘 tint（2026-04-21）
   舊版飽和橘色漸層 + 雙層陰影 + overlay 太搶版面；改為低調 brand-tint
   （light 0.08α / dark 0.15α 已在 tokens 定義），文字用 body primary，
   跟整頁 canvas 和諧，靠右對齊 + 圓角足夠辨識為使用者發話。 */
.message.user .message-content {
    background: var(--color-brand-tint);
    border-radius: 18px 18px 4px 18px;
    color: var(--color-text-primary);
    border: none;
    box-shadow: none;
    text-shadow: none;
    font-weight: 400;
    font-size: 14px;
    letter-spacing: normal;
    padding: 10px 16px;
    line-height: 1.55;
    width: fit-content;
    max-width: 100%;
    position: relative;
}

/* 移除舊版 overlay（微光 + 暗影），由 tokens 扁平 tint 處理視覺深度 */
.message.user .message-content::before,
.message.user .message-content::after {
    display: none !important;
}

/* 訊息底部（時間戳 + 複製按鈕）— hover 顯示 */
.message-footer {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 4px;
    padding: 0 4px;
    opacity: 0;
    transition: opacity 0.25s ease;
    user-select: none;
}
.message:hover .message-footer { opacity: 0.6; }
.message.user .message-footer { justify-content: flex-end; padding-right: 6px; }

.message-timestamp {
    font-size: 10px;
    color: var(--color-text-muted);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.02em;
}

/* Token usage info (agent backend) */
.agent-token-info {
    font-size: 11px;
    color: var(--color-text-tertiary, #999);
    margin-top: 6px;
    padding: 0 2px;
    letter-spacing: 0.02em;
}
[data-theme="dark"] .agent-token-info {
    color: var(--color-text-tertiary, #666);
}

/* 2026-04-20 — hide tool-execution cards and token-usage info by default.
   Admins can re-enable via localStorage flag (see tool-card-renderer.js). */
.tool-card,
.agent-token-info {
    display: none;
}
.show-tool-cards .tool-card,
.show-tool-cards .agent-token-info {
    display: block;
}

/* 複製訊息按鈕 */
.message-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 1px 6px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-xs);
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 10px;
    transition: all 0.2s ease;
    line-height: 1;
}
.message-copy-btn:hover {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.1);
}
.message-copy-btn svg { width: 11px; height: 11px; flex-shrink: 0; }
.message-copy-btn.copied { color: var(--color-price-down); border-color: var(--color-price-down); }

.message-content p {
    margin-bottom: 8px;
}

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

/* AI 回應內 strong/bold 使用 chat-typography.css 的 primary-text 色，不再強制橘色 */

/* Claude-flat-flow 2026-04-20: AI 回應 hover 不再變色（無框流動的訊息不需 hover 互動） */
.message:not(.user) .message-content,
.message:not(.user):hover .message-content {
    background: transparent;
    box-shadow: none;
    transition: none;
}

.message.user .message-content {
    transition: box-shadow 0.25s ease, transform 0.15s ease;
}

.message.user:hover .message-content {
    box-shadow: 0 3px 12px rgba(249, 115, 22, 0.22),
                0 6px 24px rgba(249, 115, 22, 0.1);
}

/* 打字指示器位置適配 message-body */
.message:not(.user) .message-body .typing-indicator {
    padding-left: 2px;
}

/* Claude-flat-flow 2026-04-20: dark mode AI 回應同樣無框流動 */
[data-theme="dark"] .message-content,
[data-theme="dark"] .message:not(.user) .message-content,
[data-theme="dark"] .message:not(.user):hover .message-content {
    background: transparent;
    box-shadow: none;
    color: var(--color-text-primary);
}

/* Claude-style: 不再套橘色 gradient / shadow，讓 base rule 的 brand-tint 通過。
   hover 也不加陰影，保持低調。 */

[data-theme="dark"] .message-timestamp {
    color: rgba(255, 255, 255, 0.25);
}

[data-theme="dark"] .message-copy-btn { color: rgba(255,255,255,0.35); }
[data-theme="dark"] .message-copy-btn:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.6);
}
[data-theme="dark"] .message-copy-btn.copied { color: #34D399; border-color: #34D399; } /* Non-token local color (dark-mode success) */

[data-theme="dark"] .message:not(.user) > .message-avatar {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

/* ============================================================
   2026-04-20 Polish layer — user bubble + in-flow error messages
   (selectors match classes actually emitted by app.js)
   ============================================================ */

.message.user .message-content {
  background: var(--color-brand-tint);
  color: var(--color-text-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-3) var(--space-5);
  font-size: var(--type-body);
  line-height: 1.55;
  box-shadow: none;
}

.message-content .parse-error-message {
  background: var(--color-danger-bg);
  color: var(--color-danger-fg);
  border-left: 3px solid var(--color-danger);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-3) var(--space-4);
  font-size: 14px;
  margin: var(--space-2) 0;
}