/* ===== CSS 變數回退值（LayoutRenderer 未初始化時使用）===== */
:root {
    --chat-area-bg-color: #ffffff;
    --surface-muted: rgba(0, 0, 0, 0.04);
    --send-button-color: #FF6B35;
    --send-button-icon-color: #ffffff;
    /* Header 相關回退值 */
    --header-bg-color: transparent;
    --header-title-color: #333333;
    --header-title-font-size: 16px;
    --header-desc-color: #6B7280;
    --header-desc-font-size: 12px;
    --header-border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

/* ===== 訪客聊天頁面主容器 (新版 Flexbox 佈局) ===== */
.visitor-chat-body {
    margin: 0;
    padding: 0;
    height: var(--app-height);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* ===== 主聊天頁面容器 ===== */
.visitor-chat-page {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    background: var(--background);
    overflow: hidden;
    position: relative;
}

/* ===== 🆕 嵌入模式樣式 ===== */
.visitor-chat-body.embed-mode .visitor-chat-header {
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    border-bottom: none;
    box-shadow: var(--shadow-sm);
}

.visitor-chat-body.embed-mode .share-info-section {
    flex: 1;
}

.visitor-chat-body.embed-mode .share-title {
    margin: 0 0 0.25rem 0;
    font-size: 1.1rem;
    color: white;
}

.visitor-chat-body.embed-mode .share-title i {
    color: white;
}

.visitor-chat-body.embed-mode .share-owner {
    margin: 0;
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
}

.visitor-chat-body.embed-mode .share-owner i {
    display: none;
}

.visitor-chat-body.embed-mode .query-limit-section {
    display: none;
}

.visitor-chat-body.embed-mode .visitor-chat-header.minimal-header {
    padding: 0.5rem 1rem;
    min-height: auto;
}

.visitor-chat-body.embed-mode .visitor-chat-header.minimal-header .share-info-section {
    display: none;
}

/* ===== Fullscreen 嵌入模式（嵌入 + layout_config 顏色/頭像）===== */
/* 聊天框填滿 iframe，但保留 layout_config 的主題色與頭像 */
.visitor-chat-body.embed-fullscreen {
    height: var(--app-height);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.visitor-chat-body.embed-fullscreen .visitor-chat-page {
    position: relative !important;
    left: auto !important;
    top: auto !important;
    right: auto !important;
    width: 100% !important;
    height: auto !important;
    max-width: none !important;
    margin: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    border: none !important;
    transform: none !important;
    flex: 1 !important;
    min-height: 0 !important;
}

/* Fullscreen 嵌入模式：AI 訊息頭像 - 有自訂頭像時才覆蓋（用 .has-embed-avatar 標記） */
.visitor-chat-body.embed-fullscreen.has-embed-avatar .message-assistant .message-avatar {
    background-image: var(--embed-avatar-url);
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    background-color: transparent;
    border: none;
}

.visitor-chat-body.embed-fullscreen.has-embed-avatar .message-assistant .message-avatar svg,
.visitor-chat-body.embed-fullscreen.has-embed-avatar .message-assistant .message-avatar i {
    display: none;
}

/* Fullscreen 嵌入模式：loading 狀態頭像（同樣只在有自訂頭像時覆蓋） */
.visitor-chat-body.embed-fullscreen.has-embed-avatar .message-loading .message-avatar {
    background-image: var(--embed-avatar-url);
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    background-color: transparent;
}

.visitor-chat-body.embed-fullscreen.has-embed-avatar .message-loading .message-avatar .avatar-loading {
    display: none;
}

/* Fullscreen 嵌入模式：Powered by 移到聊天框底部（input container 內） */
.visitor-chat-body.embed-fullscreen .powered-by-watermark {
    position: relative !important;
    bottom: auto !important;
    right: auto !important;
    left: auto !important;
    width: 100%;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 4px;
    padding: 4px 16px 8px !important;
    margin: 0 !important;
    font-size: 10px !important;
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    border-radius: 0 !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    opacity: 0.5;
    z-index: auto !important;
}

/* Fullscreen 嵌入模式：body 透明，避免圓角邊緣洩漏 */
.visitor-chat-body.embed-fullscreen {
    background: transparent !important;
}

/* ===== 🆕 Widget 模式樣式 ===== */
.chat-bubble-btn {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background: var(--primary);
    border: none;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    z-index: var(--z-modal);
    transition: var(--hover-transition);
}

.chat-bubble-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.chat-bubble-btn i {
    width: 28px;
    height: 28px;
    color: white;
}

.bubble-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--error);
    color: white;
    font-size: var(--text-xs);
    font-weight: 600;
    padding: 2px 6px;
    border-radius: var(--btn-radius);
    min-width: 20px;
    text-align: center;
}

.visitor-chat-body.widget-mode .chat-bubble-btn {
    display: flex;
    align-items: center;
    justify-content: center;
}

.visitor-chat-body.widget-mode .visitor-chat-page {
    display: none;
    position: fixed;
    bottom: 90px;
    right: 20px;
    top: auto;
    left: auto;
    /* 響應視口：小視口（例如 SimpleLayoutModal 預覽 iframe）下不溢出被裁 */
    width: min(400px, calc(100vw - 40px));
    height: min(600px, calc(100vh - 110px));
    max-width: none;
    max-height: none;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    z-index: var(--z-modal-backdrop);
    /* chatPage 尺寸固定，不隨畫布縮放，關閉字體 / 間距補償避免字體被放大 */
    --scale-font-compensation: 1;
    --scale-spacing-compensation: 1;
}

.visitor-chat-body.widget-mode .visitor-chat-page.widget-open {
    display: flex;
    animation: slideUp var(--duration-slow) var(--ease-out);
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.chat-bubble-btn.chat-open {
    background: var(--neutral-500);
}

.chat-bubble-btn.chat-open i {
    transform: rotate(90deg);
    transition: transform var(--duration-slow) var(--ease-out);
}

/* ===== 訊息來源引用 ===== */
.message-sources {
    margin-top: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--surface);
}

.sources-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--background);
    border-bottom: 1px solid var(--border);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.sources-header i {
    width: 16px;
    height: 16px;
    color: var(--primary);
}

.sources-list {
    display: flex;
    flex-direction: column;
}

.source-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background-color var(--duration-normal) var(--ease-out);
}

.source-item:last-child {
    border-bottom: none;
}

.source-item:hover {
    background: rgba(255, 107, 53, 0.05);
}

.source-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: rgba(255, 107, 53, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.source-icon i {
    width: 16px;
    height: 16px;
    color: var(--primary);
}

.source-content {
    flex: 1;
    min-width: 0;
}

.source-title {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.25rem;
}

.source-text {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 0.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.source-score {
    font-size: var(--text-xs);
    color: var(--primary);
    font-weight: 500;
}

/* ===== Demo Wall CTA ===== */
.demo-wall-cta {
    margin: 1.5rem auto;
    max-width: 380px;
    padding: 1.75rem 1.5rem;
    text-align: center;
    background: var(--surface, #fff);
    border: 1px solid var(--border-color, #E5E7EB);
    border-radius: var(--radius-xl, 16px);
    animation: demoWallFadeIn 0.5s ease-out;
}

@keyframes demoWallFadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.demo-wall-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary-50, rgba(255, 107, 53, 0.05));
    color: var(--primary, #FF6B35);
    margin-bottom: 0.75rem;
}

.demo-wall-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary, #1E293B);
    margin: 0 0 0.375rem;
}

.demo-wall-desc {
    font-size: 0.875rem;
    color: var(--text-secondary, #64748B);
    margin: 0 0 0.5rem;
}

.demo-wall-cta-text {
    font-size: 0.8125rem;
    color: var(--text-tertiary, #94A3B8);
    margin: 0 0 1.25rem;
    line-height: 1.5;
}

.demo-wall-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

.demo-wall-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-lg, 12px);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.15s ease;
    cursor: pointer;
}

.demo-wall-btn.primary {
    background: var(--primary, #FF6B35);
    color: #fff;
}

.demo-wall-btn.primary:hover {
    background: var(--primary-dark, #E55A2B);
}

.demo-wall-btn.secondary {
    background: var(--surface, #fff);
    color: var(--text-primary, #1E293B);
    border: 1px solid var(--border-color, #E5E7EB);
}

.demo-wall-btn.secondary:hover {
    background: var(--neutral-50, #F8FAFC);
    border-color: var(--neutral-300, #CBD5E1);
}

/* 輸入區域鎖定狀態 */
.demo-wall-locked {
    opacity: 0.5;
    pointer-events: none;
}

.demo-wall-locked textarea,
.demo-wall-locked button {
    cursor: not-allowed !important;
}

/* ===== Modal 樣式 ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal-backdrop);
    padding: 1rem;
}

.modal-overlay.show {
    display: flex;
}

.modal-content {
    position: relative;
    background: #ffffff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 500px;
    max-width: 100%;
    height: fit-content;
    max-height: 90vh;
    overflow-y: auto;

    /* 鎖定 Modal 內文字/邊框色為預設值,不受主題覆寫影響。
       主題的按鈕色(--send-button-color / --primary)不在此列,仍會繼承。*/
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-tertiary: #94A3B8;
    --border: #E5E7EB;
    --border-color: #E5E7EB;
    color: #1E293B;
}

/* 線條流動 loading — 用於驗證進行中 */
.modal-loading-bar {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    overflow: hidden;
    background: color-mix(in srgb, var(--send-button-color, var(--theme-primary, var(--primary, #FF6B35))) 12%, transparent);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 10;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}
.modal-content.is-loading .modal-loading-bar {
    opacity: 1;
}
.modal-loading-bar-line {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 40%;
    background: var(--send-button-color, var(--theme-primary, var(--primary, #FF6B35)));
    border-radius: 2px;
    animation: modal-loading-flow 1.6s ease-in-out infinite;
}
@keyframes modal-loading-flow {
    0%   { left: -40%; width: 40%; }
    50%  { left: 30%;  width: 50%; }
    100% { left: 100%; width: 20%; }
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    margin: 0;
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-header h3 i {
    width: 20px;
    height: 20px;
    color: var(--primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-description {
    margin: 0 0 1.5rem 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: var(--text-sm);
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    transition: border-color var(--duration-normal) var(--ease-out);
}

.form-input:focus {
    outline: none;
    border-color: var(--send-button-color, var(--primary, #FF6B35));
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--send-button-color, var(--primary, #FF6B35)) 15%, transparent);
}

.password-hint {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.75rem;
    background: var(--surface-muted, rgba(0, 0, 0, 0.04));
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.password-hint i {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 2px;
}

.error-message {
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    color: var(--error-dark);
    font-size: var(--text-sm);
}

.error-message.hidden {
    display: none;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* 🆕 Modal 內按鈕使用發送按鈕顏色 */
.modal-overlay .btn-primary {
    background: var(--send-button-color, var(--primary, #FF6B35));
    color: var(--send-button-icon-color, #ffffff);
    border-color: var(--send-button-color, var(--primary, #FF6B35));
}

.modal-overlay .btn-primary:hover {
    background: color-mix(in srgb, var(--send-button-color, var(--primary, #FF6B35)) 85%, black);
    border-color: color-mix(in srgb, var(--send-button-color, var(--primary, #FF6B35)) 85%, black);
}

.modal-overlay .btn-outline {
    color: var(--send-button-color, var(--primary, #FF6B35));
    border-color: var(--send-button-color, var(--primary, #FF6B35));
}

.modal-overlay .btn-outline:hover {
    background: var(--send-button-color, var(--primary, #FF6B35));
    color: var(--send-button-icon-color, #ffffff);
}

/* (GDPR Modal 已移除，改為浮水印內隱私政策連結) */

/* ===== 載入覆蓋層 ===== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: var(--hover-transition);
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top: 3px solid var(--theme-primary, var(--primary));
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-spinner p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.spinner-small {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top: 2px solid var(--theme-primary, var(--primary));
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

.avatar-loading {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 打字指示器動畫 */
.typing-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    background: var(--text-secondary);
    border-radius: var(--radius-full);
    animation: typing-bounce 1.4s infinite both;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing-bounce {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-10px);
    }
}

.loading-text {
    color: var(--text-secondary);
    font-style: italic;
}

/* ===== 連結失效提示畫面 ===== */
.link-expired-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    height: var(--app-height);
    width: 100vw;
    background: var(--bg-secondary);
    padding: 2rem;
}

.expired-content {
    text-align: center;
    max-width: 500px;
    background: var(--surface);
    border-radius: var(--radius-2xl);
    padding: 3rem 2rem;
    box-shadow: var(--shadow-md);
    animation: fadeInScale 0.4s ease-out;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.expired-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    background: rgba(255, 107, 53, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.expired-icon i {
    width: 50px;
    height: 50px;
    color: var(--primary);
}

.expired-title {
    margin: 0 0 1rem 0;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.expired-description {
    margin: 0 0 2rem 0;
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.6;
}

.expired-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.expired-actions .btn {
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    transition: var(--hover-transition);
    cursor: pointer;
}

.expired-actions .btn i {
    width: 18px;
    height: 18px;
}

.expired-actions .btn-secondary {
    background: var(--surface-hover);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.expired-actions .btn-secondary:hover {
    background: var(--neutral-100);
    border-color: var(--neutral-300);
}

.expired-actions .btn-primary {
    background: var(--primary);
    color: white;
    border: 1px solid var(--primary);
}

.expired-actions .btn-primary:hover {
    background: var(--primary);
    border-color: var(--primary);
    filter: brightness(0.88);
}

.expired-footer {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.expired-footer p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 0;
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.expired-footer i {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
}

/* ===== 表情貼圖訊息 ===== */
.sticker-message {
    animation: stickerFadeIn 0.3s ease-out;
}

.sticker-bubble {
    display: inline-block;
    padding: 4px;
}

.sticker-img {
    display: block;
    max-width: 120px;
    max-height: 120px;
    border-radius: var(--radius-lg, 8px);
    animation: stickerBounceIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes stickerBounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.08);
    }
    70% {
        transform: scale(0.95);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes stickerFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 響應式：小螢幕 + 手機橫放貼圖縮小 */
@media (max-width: 480px),
       (max-height: 430px) and (orientation: landscape) {
    .sticker-img {
        max-width: 96px;
        max-height: 96px;
    }
}

/* Reduced motion 無障礙 */
@media (prefers-reduced-motion: reduce) {
    .sticker-message {
        animation: none;
    }

    .sticker-img {
        animation: none;
    }
}

/* ===== 響應式設計 ===== */
@media (max-width: 768px),
       (max-height: 430px) and (orientation: landscape) {
    .modal-content {
        width: 100%;
        margin: 0;
    }

}

@media (max-width: 480px),
       (max-height: 430px) and (orientation: landscape) {
    /* 註:原先這裡有 .modal-content 滿版規則,但它是孤兒——
       LinkExpiredScreen 實際用 .link-expired-screen/.expired-content,不是 .modal-content。
       保留會導致密碼 modal、Email 驗證 modal 在手機上變成滿版,已移除。*/

    .expired-icon {
        width: 80px !important;
        height: 80px !important;
    }

    .expired-icon i {
        width: 40px !important;
        height: 40px !important;
    }

    .expired-title {
        font-size: 1.5rem !important;
    }

    .expired-actions {
        flex-direction: column !important;
    }

    .expired-actions .btn {
        width: 100% !important;
    }
}

/* ===== 🆕 Powered by 浮水印 ===== */
.powered-by-watermark {
    position: fixed;
    bottom: 16px;
    right: 16px;
    z-index: var(--z-dropdown);
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    font-size: 11px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    transition: var(--hover-transition);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.powered-by-watermark:hover {
    background: #fff;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.powered-by-watermark a {
    display: flex;
    align-items: center;
    gap: 4px;
    text-decoration: none;
}

.powered-by-watermark span {
    color: var(--neutral-500);
    font-weight: 400;
}

.powered-by-watermark strong {
    color: var(--primary, #FF6B35);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.watermark-separator {
    color: var(--neutral-300, #d1d5db);
    margin: 0 1px;
}

.powered-by-watermark a:last-child {
    color: var(--neutral-400, #9ca3af);
    font-size: 10px;
}

.powered-by-watermark a:last-child:hover {
    color: var(--neutral-500, #6b7280);
}

/* 嵌入模式浮水印位置調整 */
.visitor-chat-body.embed-mode .powered-by-watermark {
    bottom: 12px;
    right: 12px;
}

/* ===== 嵌入模式 + 手機 (vertical) — 防止 iframe 圓角邊緣背景滲出 ===== */
/* 手機時 chat-page 應該填滿整個 iframe，body 應透明讓 iframe 圓角乾淨地裁切 */
.visitor-chat-body.embed-mode.layout-view-vertical {
    background: transparent !important;
    background-image: none !important;
}

/* 確保 chat-page 完整填滿 iframe，無多餘 padding/margin */
.visitor-chat-body.embed-mode.layout-view-vertical .visitor-chat-page {
    width: 100% !important;
    height: 100% !important;
    min-height: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    border-radius: 0 !important;
}

/* 手機模式 + 手機橫放 */
@media (max-width: 480px),
       (max-height: 430px) and (orientation: landscape) {
    .powered-by-watermark {
        bottom: 12px;
        right: 12px;
        padding: 5px 10px;
        font-size: 10px;
    }
}

/* ===== 🆕 AI 建議問題按鈕 ===== */
.suggested-questions {
    /* 🆕 間距補償 */
    margin-top: calc(12px * var(--scale-spacing-compensation, 1));
    padding-top: calc(12px * var(--scale-spacing-compensation, 1));
    border-top: 1px solid var(--chat-border-color, rgba(0, 0, 0, 0.08));
}

.suggested-questions-header {
    display: flex;
    align-items: center;
    /* 🆕 間距補償 */
    gap: calc(6px * var(--scale-spacing-compensation, 1));
    margin-bottom: calc(8px * var(--scale-spacing-compensation, 1));
    /* 🆕 字體補償 — 跟隨訊息字體（略小） */
    font-size: calc((var(--message-font-size, 14px) - 2px) * var(--scale-font-compensation, 1));
    color: var(--chat-subtext-color, #6B7280);
    font-weight: 500;
}

.suggested-questions-header svg {
    width: 14px;
    height: 14px;
    stroke: var(--primary, #FF6B35);
}

.suggested-questions-list {
    display: flex;
    flex-wrap: wrap;
    /* 🆕 間距補償 */
    gap: calc(8px * var(--scale-spacing-compensation, 1));
}

.suggested-question-btn {
    display: inline-flex;
    align-items: center;
    /* 🆕 間距補償 */
    gap: calc(6px * var(--scale-spacing-compensation, 1));
    padding: calc(8px * var(--scale-spacing-compensation, 1)) calc(14px * var(--scale-spacing-compensation, 1));
    background: transparent;
    border: 1px solid var(--primary, #FF6B35);
    border-radius: var(--radius-2xl);
    /* 🆕 字體補償 — 跟隨訊息字體 */
    font-size: calc(var(--message-font-size, 14px) * var(--scale-font-compensation, 1));
    color: var(--primary, #FF6B35);
    cursor: pointer;
    transition: var(--hover-transition);
    max-width: 100%;
}

.suggested-question-btn:hover {
    background: var(--primary, #FF6B35);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.suggested-question-btn:active {
    transform: translateY(0);
}

.suggested-question-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.suggested-question-btn span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 建議問題「生成中」骨架：主回覆已寫完、建議問題仍在生成時的佔位佔位，
   done 時由 JS 換成真按鈕。shimmer 用 currentColor 自適應深 / 淺底面板 */
.suggested-questions-skeleton {
    animation: suggSkelFadeIn 0.25s ease both;
}

.suggested-questions-skeleton .sugg-skel-chip {
    display: inline-block;
    height: calc((var(--message-font-size, 14px) + 16px) * var(--scale-font-compensation, 1));
    border-radius: var(--radius-2xl);
    background: rgba(127, 127, 127, 0.12); /* fallback：不支援 color-mix 時的中性底 */
    background-image: linear-gradient(
        100deg,
        color-mix(in srgb, currentColor 8%, transparent) 30%,
        color-mix(in srgb, currentColor 18%, transparent) 50%,
        color-mix(in srgb, currentColor 8%, transparent) 70%
    );
    background-size: 200% 100%;
    background-repeat: no-repeat;
    animation: suggSkelShimmer 1.2s ease-in-out infinite;
}

@keyframes suggSkelShimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

@keyframes suggSkelFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
    .suggested-questions-skeleton { animation: none; }
    .suggested-questions-skeleton .sugg-skel-chip { animation: none; }
}

/* 響應式：小螢幕 + 手機橫放時縮小按鈕 */
@media (max-width: 480px),
       (max-height: 430px) and (orientation: landscape) {
    .suggested-questions-list {
        flex-direction: column;
    }

    .suggested-question-btn {
        width: 100%;
        justify-content: flex-start;
        padding: 10px 14px;
        font-size: var(--mobile-message-font-size, 12px);
    }

    .suggested-question-btn span {
        white-space: normal;
        text-align: left;
    }
}

/* ============================================================
 * 訪客 Email 白名單驗證 Modal (Business 專屬)
 * ============================================================ */

.visitor-email-verify-modal .vev-content {
    max-width: 440px;
}

.visitor-email-verify-modal .vev-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.visitor-email-verify-modal .vev-title svg {
    color: var(--primary);
    flex-shrink: 0;
}

.visitor-email-verify-modal .vev-description {
    margin: 0 0 1.5rem 0;
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.9rem;
}

.visitor-email-verify-modal .vev-hint {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.75rem;
    background: var(--surface-muted, rgba(0, 0, 0, 0.04));
    border-radius: var(--radius-lg);
    font-size: 0.8rem;
    color: var(--text-tertiary);
    line-height: 1.5;
}

.visitor-email-verify-modal .vev-hint svg {
    flex-shrink: 0;
    margin-top: 1px;
}

/* OTP 輸入框:對齊二次驗證設計(.verification-code-input) */
.visitor-email-verify-modal .vev-otp-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color, #E2E8F0);
    border-radius: var(--btn-radius, 10px);
    font-size: var(--text-xl, 1.25rem);
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
    letter-spacing: 0.5em;
    text-align: center;
    color: var(--text-primary, #1E293B);
    background: var(--bg-primary, #FFFFFF);
    font-weight: 600;
    transition: var(--hover-transition);
}

.visitor-email-verify-modal .vev-otp-input:focus {
    outline: none;
    border-color: var(--primary, #FF6B35);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.visitor-email-verify-modal .vev-otp-input::placeholder {
    letter-spacing: 0.3em;
    color: var(--text-tertiary, #94A3B8);
    font-weight: 400;
}

/* Actions row (更改 email / 重送) */
.visitor-email-verify-modal .vev-actions-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.visitor-email-verify-modal .vev-link-btn {
    background: none;
    border: none;
    padding: 0.25rem 0.5rem;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s ease;
}

.visitor-email-verify-modal .vev-link-btn:hover:not(:disabled) {
    color: var(--primary-dark, #E55A2B);
    text-decoration: underline;
}

.visitor-email-verify-modal .vev-link-btn:disabled {
    color: var(--text-tertiary);
    cursor: not-allowed;
    text-decoration: none;
}

.visitor-email-verify-modal .modal-footer {
    display: flex;
    justify-content: flex-end;
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border);
}

.visitor-email-verify-modal .modal-footer .btn-primary {
    min-width: 140px;
}

/* 響應式:Email 驗證 Modal 的寬度跟隨通用 .modal-content 行為(width:100%, max-width:440px),
   不做額外覆寫,避免跟密碼 modal 視覺不一致 */
@media (max-width: 480px) {
    .visitor-email-verify-modal .vev-otp-input {
        font-size: var(--text-lg, 1.125rem);
        letter-spacing: 0.4em;
    }
}

/* ==================== 展示牆 Badge + 檢舉按鈕 ==================== */

/* 明確處理 [hidden]：class selector 的 display 會蓋掉 UA 的 [hidden]{display:none} */
.showcase-badge[hidden],
.visitor-report-btn[hidden],
#reportModal[hidden] {
    display: none !important;
}

.showcase-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    margin-top: 6px;
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--primary);
    background: var(--primary-50);
    border: 1px solid var(--primary-200, var(--primary-50));
    border-radius: var(--radius-full, 999px);
    text-decoration: none;
    transition: background 0.2s ease;
}
.showcase-badge:hover {
    background: var(--primary-100, var(--primary-50));
}
.showcase-badge svg {
    width: 12px;
    height: 12px;
}

.visitor-report-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all 0.2s ease;
    margin-left: auto;
    flex-shrink: 0;
}
.visitor-report-btn:hover {
    color: var(--danger);
    border-color: var(--danger);
    background: var(--bg-primary);
}
.visitor-report-btn svg {
    width: 16px;
    height: 16px;
}

.visitor-report-modal {
    max-width: 440px;
}
.visitor-report-modal .report-success-msg {
    color: var(--success);
    font-weight: var(--font-medium);
    margin-top: var(--space-sm);
}

/* ============================================================================
   ChatArea 顯示模式：widget（config-driven，非 iframe）
   ============================================================================
   Widget 模式已有 CSS 在本檔前面定義（chat-bubble-btn, widget-mode .visitor-chat-page）。
   config-driven widget（body.widget-mode 且非 iframe）共用同一套 CSS，
   但頁面其他層（背景、裝飾、簽名）仍由 LayoutRenderer 正常渲染。
*/

/* ============================================================================
   ChatArea 顯示模式：floatingInput（config-driven，桌面專用）
   - 畫布底部中央一條浮動輸入框
   - 送出訊息後右側滑入對話面板（蓋在畫布之上）
   - 關閉面板回到只有輸入框；再次送訊息再次滑入，保留對話歷史
   ============================================================================ */

/* 輸入框被 JS 移到 body 層級後，釘在畫布底部中央（pill 風格，對齊編輯器畫布預覽）
   背景 / 圓角 / 邊框 / 陰影 由 LayoutRenderer._applyChatAreaAppearanceOnly 從
   chatArea.style 套 inline，跟面板樣式視覺一致。此處只保留 position / 尺寸 / padding
   等結構屬性，視覺屬性留給擁有者設定覆蓋。 */
body.visitor-chat-body.floating-input-mode > #visitorInputContainer {
    position: fixed;
    left: 50%;
    bottom: 32px;
    top: auto;
    transform: translateX(-50%);
    width: min(720px, 90vw);
    height: auto;
    min-height: 0;
    padding: 8px 10px;
    z-index: var(--z-modal-backdrop);
    /* 輸入框固定尺寸，不吃畫布縮放補償 */
    --scale-font-compensation: 1;
    --scale-spacing-compensation: 1;
}

/* demo 預覽：點 pill 展開面板，顯示手指游標提示可點擊 */
body.visitor-chat-body.slm-preview-demo.floating-input-mode > #visitorInputContainer {
    cursor: pointer;
}

/* demo 預覽模式專用：textarea disabled 會吃掉 mouseevent，讓點擊無法穿透到
   inputContainer 觸發展開面板，只有邊緣空白才能點到。用 pointer-events: none 讓
   點擊穿透到父層。訪客實際頁面（沒 slm-preview-demo class）textarea 不 disabled，
   可正常 focus 打字，點輸入框不展開面板 —— 送出訊息時才展開。 */
body.visitor-chat-body.slm-preview-demo.floating-input-mode > #visitorInputContainer * {
    pointer-events: none;
}

body.visitor-chat-body.floating-input-mode > #visitorInputContainer .input-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    max-width: none;
    margin: 0;
}

body.visitor-chat-body.floating-input-mode > #visitorInputContainer .input-wrapper {
    flex: 1;
    min-width: 0;
    background: transparent;
    padding: 0;
    border: none;
}

body.visitor-chat-body.floating-input-mode > #visitorInputContainer .message-input {
    width: 100%;
    border: none;
    outline: none;
    resize: none;
    background: transparent;
    font-size: 15px;
    line-height: 1.4;
    padding: 10px 12px;
    min-height: 0;
    height: auto;
    max-height: 96px;
}

/* 輸入框字色 / 提示字色 / 游標色：套 inputArea 設定。
   floating / widget 模式會把 #visitorInputContainer 搬到 <body>，離開
   .layout-template-mode 容器，導致原字色規則（.layout-template-mode .message-input）
   命中不到 → 用 ID 選擇器補回，三模式（fullBlock / floating / widget）一致取色。 */
#visitorInputContainer .message-input {
    color: var(--input-text-color, var(--chat-text-color, #333333));
    caret-color: var(--input-text-color, var(--chat-text-color, #333333));
}
#visitorInputContainer .message-input::placeholder {
    color: var(--input-placeholder-color, var(--chat-subtext-color, #6B7280));
}

body.visitor-chat-body.floating-input-mode > #visitorInputContainer .btn.btn-primary.send-btn {
    flex: 0 0 auto;
    width: 40px;
    height: 40px;
    min-width: 40px;
    padding: 0;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

body.visitor-chat-body.floating-input-mode > #visitorInputContainer .send-btn i {
    width: 18px;
    height: 18px;
}

body.visitor-chat-body.floating-input-mode > #visitorInputContainer .send-btn span {
    display: none;
}

/* chatPage 變成右側滑入的對話歷史面板
   四邊留 20px 邊距讓圓角 / 邊框 / 陰影完整顯示，不被視口邊緣切掉
   收合時 transform 位移量 = 面板寬度 + 右邊距，確保完全滑出視口外
   Transition 只在 body.transitions-ready 下啟用，避免初始化時從 transform:none 滑入收合態 */
body.visitor-chat-body.floating-input-mode #visitorChatPage {
    position: fixed;
    top: 20px;
    right: 20px;
    bottom: 20px;
    left: auto;
    width: min(460px, calc(100vw - 40px));
    height: auto;
    max-width: none;
    max-height: none;
    transform: translateX(calc(100% + 20px));
    visibility: hidden;  /* 收合態整個 chatPage 隱藏，box-shadow / border 都不露 */
    z-index: var(--z-modal-backdrop);
    display: flex;
    flex-direction: column;
    overflow: hidden;  /* 訊息滾動不溢出圓角 */
    /* 面板尺寸固定，不吃畫布縮放補償 */
    --scale-font-compensation: 1;
    --scale-spacing-compensation: 1;
}

/* 展開態：顯示 + transform 歸位 */
body.visitor-chat-body.floating-input-mode.floating-panel-open #visitorChatPage {
    transform: translateX(0);
    visibility: visible;
}

/* Transition：
   展開時 visibility 立刻 visible + transform 滑入
   收合時 transform 先滑出，動畫結束後 visibility 才變 hidden（避免滑出途中就沒畫面） */
body.visitor-chat-body.transitions-ready.floating-input-mode #visitorChatPage {
    transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0s linear 0.32s;
}

body.visitor-chat-body.transitions-ready.floating-input-mode.floating-panel-open #visitorChatPage {
    transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0s linear 0s;
}

/* 關閉按鈕（JS 動態插入到面板右上角；widget / floatingInput 共用） */
body.visitor-chat-body.floating-input-mode .floating-panel-close,
body.visitor-chat-body.widget-mode .floating-panel-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: 50%;
    border: none;
    /* 對比保證樣式：深色玻璃底 + 白圈 + 白圖示，
       不繼承模板色，確保在任何深 / 淺底模板上都清楚可見 */
    background: rgba(0, 0, 0, 0.45);
    color: #fff;
    box-shadow: 0 0 0 1.5px rgba(255, 255, 255, 0.6), 0 2px 10px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    z-index: 20;
    transition: background 0.15s ease, transform 0.15s ease;
}

body.visitor-chat-body.floating-input-mode .floating-panel-close:hover,
body.visitor-chat-body.widget-mode .floating-panel-close:hover {
    background: rgba(0, 0, 0, 0.65);
    transform: scale(1.08);
}

body.visitor-chat-body.floating-input-mode .floating-panel-close i,
body.visitor-chat-body.widget-mode .floating-panel-close i,
body.visitor-chat-body.floating-input-mode .floating-panel-close svg,
body.visitor-chat-body.widget-mode .floating-panel-close svg {
    width: 18px;
    height: 18px;
    pointer-events: none;
}

/* floatingInput：面板打開時，底部浮動 wrapper 視覺上消失
   （實際上 inputContainer 已被 JS 搬到 chatPage 內，body 下沒有該節點） */

/* 手機 / 平板（portrait）：floatingInput 模式失效，走原有 vertical 流 */
@media (max-width: 767px), (min-width: 768px) and (max-width: 1024px) and (orientation: portrait) {
    body.visitor-chat-body.floating-input-mode > #visitorInputContainer {
        position: static;
        left: auto;
        bottom: auto;
        transform: none;
        width: auto;
        border: none;
        border-radius: 0;
        box-shadow: none;
        padding: 0;
        background: transparent;
    }
    body.visitor-chat-body.floating-input-mode > #visitorInputContainer .send-btn {
        width: auto;
        height: auto;
        min-width: 0;
        border-radius: var(--btn-radius);
        padding: 0.5rem 1rem;
    }
    body.visitor-chat-body.floating-input-mode > #visitorInputContainer .send-btn span {
        display: inline;
    }
    body.visitor-chat-body.floating-input-mode #visitorChatPage {
        position: static;
        top: auto;
        right: auto;
        bottom: auto;
        width: auto;
        transform: none;
        visibility: visible;  /* 手機平板還原 vertical flow，不能保留 hidden */
        box-shadow: none;
    }
    body.visitor-chat-body.floating-input-mode .floating-panel-close {
        display: none;
    }
}