/**
 * Portal News ID 頁面專用樣式
 * @description 包含 portal-news-id 頁面的獨有樣式
 * @author Raymond
 * @version 1.0.0
 */

/* ============================================================================
   頂部文章標題卡片
   ============================================================================ */

.article-header-card {
    display: flex;
    gap: 20px;
    background: var(--bg-card-gradient);
    border-radius: var(--radius-card-large);
    box-shadow: var(--shadow-soft);
    padding: 14px;
    margin-bottom: 24px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

@media (hover: hover) {
    .article-header-card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-soft), 0 8px 24px rgba(30, 41, 59, 0.12);
    }
}

.article-header-image {
    flex-shrink: 0;
    width: 240px;
    height: 135px;
    border-radius: var(--radius-card-large);
    margin: 12px;
    overflow: hidden;
    background: rgba(148, 163, 184, 0.1);
}

.article-header-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-header-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.article-header-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.article-original-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--neutral-20);
    font-size: var(--font-size-sm);
    font-weight: 400;
    text-decoration: none;
    transition: color 0.2s ease;
}

.article-original-link:hover {
    color: var(--primary);
}

.article-header-title {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
    margin: 0;
}

.article-header-time {
    font-size: var(--font-size-base);
    color: var(--neutral-20);
    margin: 0;
}


[data-theme="dark"] .article-header-time {
    color: var(--neutral-80);
}
[data-theme="dark"] .article-original-link {
    color: var(--neutral-80);
}
/* ============================================================================
   字體大小按鈕（單一按鈕，圖示依邏輯變化）
   ============================================================================ */

.btn-font-size {
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    padding: 0;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.btn-font-size img {
    width: 44px;
    height: 44px;
    flex: none;
    object-fit: contain;
    display: block;
    position: absolute;
    inset: 0;
}

.btn-font-size .font-size-icon-decrease,
.btn-font-size .font-size-icon-normal,
.btn-font-size .font-size-icon-increase {
    display: none;
}

/* Light 模式：顯示 light 圖示 */
.btn-font-size[data-font-size="small"] .font-size-icon-decrease.font-size-icon-light,
.btn-font-size[data-font-size="medium"] .font-size-icon-normal.font-size-icon-light,
.btn-font-size[data-font-size="large"] .font-size-icon-increase.font-size-icon-light {
    display: block;
}

/* Dark 模式：隱藏 light 圖示、顯示 dark 圖示 */
[data-theme="dark"] .btn-font-size .font-size-icon-light {
    display: none;
}

[data-theme="dark"] .btn-font-size[data-font-size="small"] .font-size-icon-decrease.font-size-icon-dark,
[data-theme="dark"] .btn-font-size[data-font-size="medium"] .font-size-icon-normal.font-size-icon-dark,
[data-theme="dark"] .btn-font-size[data-font-size="large"] .font-size-icon-increase.font-size-icon-dark {
    display: block;
}

/* hover 覆蓋層（使用 user 提供的 CSS） */
.btn-font-size::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.1) 100%);
    border-radius: 16px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.btn-font-size:hover {
    box-shadow: 0px 4px 10px rgba(30, 41, 59, 0.15);
}

.btn-font-size:hover::before {
    opacity: 1;
}

.btn-font-size.active::before {
    opacity: 1;
}

.btn-font-size.active {
    box-shadow: 0px 4px 10px rgba(30, 41, 59, 0.15);
}

/* 暗黑模式 */
[data-theme="dark"] .btn-font-size::before {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.15) 100%);
}

/* ============================================================================
   閱讀模式 Toggle Switch
   ============================================================================ */

.reading-mode-toggle-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-right: 12px;
}

.reading-mode-label-toolbar {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    user-select: none;
}

.reading-mode-toggle-switch {
    position: relative;
    width: 48px;
    height: 26px;
    padding: 0;
    border: none;
    background: transparent;
    cursor: pointer;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

.toggle-track {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* background: var(--border); */
    background-color: var(--neutral-80);
    border-radius: 13px;
    transition: background 0.3s var(--ease-emphasized);
    pointer-events: none;
}

.toggle-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    background: #ffffff;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s var(--ease-emphasized), box-shadow 0.3s var(--ease-emphasized);
    pointer-events: none;
}

.reading-mode-toggle-switch.active .toggle-track {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-alt) 100%);
}

.reading-mode-toggle-switch.active .toggle-thumb {
    transform: translateX(22px);
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.4);
}

.reading-mode-toggle-switch:hover .toggle-track {
    background: var(--text-tertiary);
}

.reading-mode-toggle-switch.active:hover .toggle-track {
    background: linear-gradient(135deg, var(--primary-alt) 0%, var(--primary) 100%);
}

.reading-mode-toggle-switch:hover .toggle-thumb {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.reading-mode-toggle-switch.active:hover .toggle-thumb {
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.5);
}

.reading-mode-toggle-switch:active .toggle-thumb {
    width: 22px;
    height: 22px;
    top: 2px;
    left: 2px;
}

.reading-mode-toggle-switch.active:active .toggle-thumb {
    transform: translateX(20px);
}

.reading-mode-toggle-switch:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 15px;
}

.chat-app[data-theme="dark"] .reading-mode-label-toolbar {
    color: var(--text-secondary);
}

.chat-app[data-theme="dark"] .toggle-track {
    background: rgba(148, 163, 184, 0.3);
}

.chat-app[data-theme="dark"] .toggle-thumb {
    background: #f1f5f9;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.chat-app[data-theme="dark"] .reading-mode-toggle-switch:hover .toggle-track {
    background: rgba(148, 163, 184, 0.5);
}

.chat-app[data-theme="dark"] .reading-mode-toggle-switch.active .toggle-track {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-alt) 100%);
}

.chat-app[data-theme="dark"] .reading-mode-toggle-switch.active:hover .toggle-track {
    background: linear-gradient(135deg, var(--primary-alt) 0%, var(--primary) 100%);
}

/* ============================================================================
   內容詳情 Modal
   ============================================================================ */

.content-details {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, visibility 0.25s ease;
    z-index: 400;
}

.content-details.is-open {
    visibility: visible;
    opacity: 1;
    pointer-events: all;
}

.content-details-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(8, 11, 30, 0.55);
    backdrop-filter: blur(4px);
}

.content-details-panel {
    position: relative;
    margin: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.content-details-close {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(148, 163, 184, 0.35);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.content-details-body {
    margin: auto;
    width: min(1040px, 92vw);
    height: 100%;
    background: var(--surface);
    border-radius: 28px;
    padding: clamp(28px, 4vw, 48px);
    overflow-y: auto;
    box-shadow: 0 24px 54px -26px rgba(15, 23, 42, 0.65);
    position: relative;
    z-index: 1;
}

.content-details-header,
.content-details-body-header {
    margin-bottom: 24px;
}

.content-details-body-header {
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.content-details-title {
    font-size: clamp(1.5rem, 2.8vw, 2.2rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.content-details-meta {
    margin: 0;
    color: var(--text-tertiary);
}

.content-details-content p {
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 1.4rem;
}

.content-details-content ul {
    padding-left: 1.2rem;
    margin-bottom: 1.4rem;
    color: var(--text-secondary);
}

.content-details-content li + li {
    margin-top: 0.6rem;
}

.content-details-subtitle {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 2rem 0 1rem;
    color: var(--text-primary);
}

.content-details-cover img {
    display: block;
    width: 100%;
    height: auto;
    max-width: 100%;
    object-fit: contain;
}

body.content-details-open,
body.recommend-news-modal-open {
    overflow: hidden;
}

/* ============================================================================
   推薦新聞 Modal
   ============================================================================ */

.recommend-news-modal {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, visibility 0.25s ease;
    z-index: 400;
}

.recommend-news-modal.is-open {
    visibility: visible;
    opacity: 1;
    pointer-events: all;
}

.recommend-news-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(8, 11, 30, 0.55);
    backdrop-filter: blur(4px);
}

.recommend-news-panel {
    position: relative;
    margin: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.recommend-news-close {
    position: absolute;
    top: clamp(20px, 2.5vh, 28px);
    right: clamp(20px, 2.5vw, 28px);
    z-index: 2;
    background: rgba(255, 255, 255, 0.25);
    border: 1px solid rgba(148, 163, 184, 0.35);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
}

.recommend-news-body {
    position: relative;
    width: min(900px, 92vw);
    max-height: 90vh;
    background: var(--surface);
    border-radius: 28px;
    padding: clamp(28px, 4vw, 48px);
    overflow-y: auto;
    box-shadow: 0 24px 54px -26px rgba(15, 23, 42, 0.65);
    z-index: 1;
}

.recommend-news-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.recommend-news-title {
    font-size: clamp(1.5rem, 2.8vw, 2rem);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.recommend-news-list {
    display: grid;
    gap: 20px;
}

.recommend-news-item {
    border-radius: 16px;
    overflow: hidden;
    background: var(--surface-strong);
    border: 1px solid var(--border);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.recommend-news-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

.recommend-news-link {
    display: flex;
    text-decoration: none;
    color: inherit;
    gap: 16px;
    padding: 16px;
}

.recommend-news-image {
    flex-shrink: 0;
    width: 120px;
    height: 80px;
    border-radius: 12px;
    overflow: hidden;
    background: var(--surface-muted);
}

.recommend-news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.recommend-news-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.recommend-news-item-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px 0;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.recommend-news-item-time {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin: 0;
}

/* ============================================================================
   推薦新聞 Swiper 樣式（用於訊息內容中的推薦新聞）
   ============================================================================ */

.recommend-news-related {
    margin-top: 24px;
    padding: 24px;
    background: var(--bg-card-gradient);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow-soft);
    animation: recommendNewsFadeIn 0.4s var(--ease-emphasized);
    width: 100%;
}

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

.recommend-news-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border);
}

.recommend-news-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--accent-bg);
    color: var(--primary);
    flex-shrink: 0;
}

.recommend-news-icon svg {
    width: 24px;
    height: 24px;
}

.recommend-news-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.recommend-news-swiper {
    width: 100%;
    height: auto;
    padding: 10px 0;
    overflow: hidden;
    margin: 0 -16px;
    padding-left: 16px;
    padding-right: 16px;
}

.recommend-news-swiper .swiper-wrapper {
    display: flex;
    align-items: stretch;
}

.recommend-news-swiper .swiper-slide {
    width: 280px;
    height: auto;
    flex-shrink: 0;
    display: flex;
}

.recommend-news-swiper .recommend-news-link {
    width: 100%;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    padding: 12px;
    background-color: var(--surface-strong);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
    height: 100%;
    box-sizing: border-box;
    gap: 12px;
}

.recommend-news-swiper .recommend-news-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--primary);
    background-color: var(--surface-strong);
}

.recommend-news-swiper .recommend-news-link img {
    width: 100%;
    height: 100px;
    object-fit: cover;
    border-radius: 8px;
    background: var(--surface-muted);
}

.recommend-news-swiper .recommend-news-item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-width: 0;
}

.recommend-news-swiper .recommend-news-item-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px 0;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.recommend-news-swiper .recommend-news-item-time {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin: 0;
}

/* ============================================================================
   響應式調整
   ============================================================================ */

@media (max-width: 768px) {
    .article-header-card {
        flex-direction: column;
        gap: 12px;
    }

    .article-header-image {
        width: 100%;
        height: 200px;
        margin: 0;
    }

    .content-details-body {
        width: min(100%, 96vw);
        border-radius: 22px 22px 0 0;
        padding: 28px 22px 36px;
    }

    .content-details-close {
        right: 20px;
        top: 20px;
    }

    .recommend-news-body {
        width: min(100%, 96vw);
        border-radius: 22px 22px 0 0;
        padding: 28px 22px 36px;
        max-height: 85vh;
    }

    .recommend-news-close {
        right: 20px;
        top: 20px;
    }

    .recommend-news-link {
        flex-direction: column;
        gap: 12px;
    }

    .recommend-news-image {
        width: 100%;
        height: 180px;
    }

    .recommend-news-item-title {
        font-size: 0.95rem;
    }

    .recommend-news-swiper {
        margin: 0 -12px;
        padding-left: 12px;
        padding-right: 12px;
    }

    .recommend-news-swiper .swiper-slide {
        width: 75vw;
        max-width: 280px;
    }
}

@media (max-width: 480px) {
    .recommend-news-related {
        padding: 16px 12px;
        border-radius: 12px;
    }

    .recommend-news-header {
        gap: 10px;
    }

    .recommend-news-swiper {
        margin: 0 -8px;
        padding-left: 8px;
        padding-right: 8px;
    }

    .recommend-news-swiper .swiper-slide {
        width: 80vw;
        max-width: 240px;
    }

    .recommend-news-swiper .recommend-news-link img {
        height: 90px;
    }
}

/* ============================================================================
   暗黑主題
   ============================================================================ */

.chat-app[data-theme="dark"] .recommend-news-related {
    background: var(--surface-strong);
    border-color: var(--border);
}

/* ============================================================================
   多元觀點分析
   ============================================================================ */

.viewpoint-analysis {
    margin-top: 24px;
    padding: 24px;
    background: var(--bg-card-gradient);
    border: 1px solid var(--border);
    border-radius: var(--radius-card-large);
    box-shadow: var(--shadow-card-default);
    animation: viewpointFadeIn 0.4s var(--ease-emphasized);
}

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

.viewpoint-analysis-header {
    display: flex;
    align-items: center;
    gap: 12px;
    /* margin-bottom: 20px; */
    padding-bottom: 6px;
    border-bottom: 2px solid var(--border);
}

.viewpoint-analysis-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 10px;
    background: var(--accent-bg);
    color: var(--primary);
    flex: none;
    order: 0;
    flex-grow: 0;
    flex-shrink: 0;
    position: relative;
}

.viewpoint-analysis-icon svg {
    width: 20px;
    height: 20px;
    position: relative;
}

.viewpoint-analysis-icon svg path {
    position: absolute;
    height: 12px;
    left: 10%;
    right: 10%;
    top: calc(50% - 12px / 2);
}

.chat-app[data-theme="dark"] .viewpoint-analysis-icon svg {
    stroke: var(--main-blue);
}

.chat-app[data-theme="dark"] .viewpoint-analysis-icon svg path {
    stroke: var(--main-blue);
    stroke-width: 2px;
}

.viewpoint-analysis-title {
    margin: 0;
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.viewpoint-analysis-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

/* 觀點溫度計 skeleton：AI 正在生成提示 */
.viewpoint-skeleton-generating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 0 16px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    animation: viewpointSkeletonGeneratingFade 0.5s ease-out;
}

.viewpoint-skeleton-generating-text {
    opacity: 0.9;
    animation: viewpointSkeletonTextPulse 1.8s ease-in-out infinite;
}

.viewpoint-skeleton-generating-dots {
    display: inline-flex;
    gap: 4px;
    align-items: center;
}

.viewpoint-skeleton-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    animation: viewpointSkeletonDot 1.2s ease-in-out infinite both;
}

.viewpoint-skeleton-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.viewpoint-skeleton-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes viewpointSkeletonGeneratingFade {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes viewpointSkeletonTextPulse {
    0%, 100% { opacity: 0.85; }
    50% { opacity: 1; }
}

@keyframes viewpointSkeletonDot {
    0%, 80%, 100% {
        transform: scale(0.85);
        opacity: 0.6;
    }
    40% {
        transform: scale(1.15);
        opacity: 1;
    }
}

.chat-app[data-theme="dark"] .viewpoint-skeleton-generating {
    color: var(--text-tertiary);
}

.chat-app[data-theme="dark"] .viewpoint-skeleton-dot {
    background: var(--primary);
}

/* 觀點溫度計 skeleton（資料載入前） */
.viewpoint-analysis-content-skeleton {
    min-height: 200px;
}

.viewpoint-card-skeleton {
    display: flex;
    flex-direction: column;
    padding: 16px 16px 0 16px;
    background: var(--bg-card-gradient);
    border: 1px solid var(--border);
    border-radius: 24px;
    box-shadow: var(--shadow-card-default);
}

.viewpoint-card-skeleton-header {
    margin-bottom: 12px;
}

.viewpoint-card-skeleton-header .viewpoint-skeleton-badge {
    width: 56px;
    height: 24px;
    border-radius: 12px;
}

.viewpoint-card-skeleton-body {
    flex: 1;
    margin-bottom: 16px;
}

.viewpoint-card-skeleton-body .skeleton-title {
    height: 18px;
    width: 85%;
    margin-bottom: 12px;
}

.viewpoint-card-skeleton-body .viewpoint-skeleton-line {
    height: 14px;
    width: 100%;
    margin-bottom: 10px;
}

.viewpoint-card-skeleton-body .viewpoint-skeleton-line-short {
    width: 65%;
    margin-bottom: 0;
}

.viewpoint-card-skeleton-actions .viewpoint-skeleton-btn {
    width: 72px;
    height: 36px;
    border-radius: 8px;
}

.chat-app[data-theme="dark"] .viewpoint-card-skeleton {
    background: var(--surface-muted);
}

.viewpoint-analysis-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px 24px;
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    font-weight: 500;
    animation: viewpointLoadingFadeIn 0.4s ease-out;
}

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

.viewpoint-analysis-loading::before {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: viewpointLoadingSpin 0.8s linear infinite;
}

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

.chat-app[data-theme="dark"] .viewpoint-analysis-loading {
    color: var(--text-tertiary);
}

.chat-app[data-theme="dark"] .viewpoint-analysis-loading::before {
    border-color: rgba(148, 163, 184, 0.3);
    border-top-color: var(--primary);
}

.viewpoint-card {
    display: flex;
    flex-direction: column;
    padding: 16px 16px 0 16px;
    background: var(--bg-card-gradient);
    border: 1px solid var(--border);
    border-radius: 24px;
    transition: all 0.3s var(--ease-emphasized);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card-default);
}

.viewpoint-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.viewpoint-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
    border-color: var(--primary);
}

.viewpoint-card:hover::before {
    opacity: 1;
}

.viewpoint-card-header {
    margin-bottom: 12px;
}

.viewpoint-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: all 0.2s ease;
}

.viewpoint-badge-1 {
    background: var(--main-subtle);
    color: var(--main-blue);
}

.viewpoint-badge-2 {
    background: rgba(139, 92, 246, 0.15);
    color: #8b5cf6;
}

.viewpoint-badge-3 {
    background: rgba(236, 72, 153, 0.15);
    color: #ec4899;
}

.viewpoint-card-body {
    flex: 1;
}

.viewpoint-card-body p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: var(--font-size-base);
}
.viewpoint-card-body h2 {
    font-size: var(--font-size-2xl);
}
.viewpoint-card-body p:not(:last-child) {
    margin-bottom: 12px;
}

/* 觀點卡片內的喜歡/不喜歡按鈕樣式 */
.viewpoint-card .like-dislike-buttons {
    display: grid;
    grid-template-columns: 1fr 1px 1fr;
    align-items: center;
    width: calc(100% + 32px);
    margin-top: 16px;
    margin-left: -16px;
    margin-right: -16px;
    margin-bottom: 0;
    background: var(--bg-card-gradient);
    border-bottom-left-radius: 24px;
    border-bottom-right-radius: 24px;
    overflow: hidden;
}

.viewpoint-feedback-button {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: transparent;
    border: none;
    color: #9ca3af;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: var(--font-size-lg);
    width: 100%;
    box-sizing: border-box;
}

.viewpoint-feedback-button:hover {
    background: rgba(0, 0, 0, 0.02);
    color: #6b7280;
}

.viewpoint-feedback-button.active {
    color: var(--primary);
}

/* Viewpoint Like 按鈕點擊後，圖示顏色改為成功色 */
.viewpoint-feedback-button.like-button.active {
    color: var(--state-success-02) !important;
}

.viewpoint-feedback-button.like-button.active i {
    color: var(--state-success-02) !important;
}

/* Viewpoint Dislike 按鈕點擊後，圖示顏色改為錯誤色 */
.viewpoint-feedback-button.dislike-button.active {
    color: var(--state-error-02) !important;
}

.viewpoint-feedback-button.dislike-button.active i {
    color: var(--state-error-02) !important;
}

.viewpoint-feedback-button i {
    font-size: 1.25rem;
}

.viewpoint-feedback-divider {
    width: 1px;
    height: 24px;
    background: rgba(0, 0, 0, 0.1);
    justify-self: center;
    align-self: center;
}

.chat-app[data-theme="dark"] .viewpoint-feedback-button {
    color: #6b7280;
}

.chat-app[data-theme="dark"] .viewpoint-feedback-button:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #9ca3af;
}

.chat-app[data-theme="dark"] .viewpoint-feedback-button.active {
    color: var(--primary);
}

/* Viewpoint Like 按鈕點擊後，圖示顏色改為成功色 */
.chat-app[data-theme="dark"] .viewpoint-feedback-button.like-button.active {
    color: var(--state-success-02) !important;
}

.chat-app[data-theme="dark"] .viewpoint-feedback-button.like-button.active i {
    color: var(--state-success-02) !important;
}

/* Viewpoint Dislike 按鈕點擊後，圖示顏色改為錯誤色 */
.chat-app[data-theme="dark"] .viewpoint-feedback-button.dislike-button.active {
    color: var(--state-error-02) !important;
}

.chat-app[data-theme="dark"] .viewpoint-feedback-button.dislike-button.active i {
    color: var(--state-error-02) !important;
}

.chat-app[data-theme="dark"] .viewpoint-feedback-divider {
    background: rgba(255, 255, 255, 0.15);
}

.chat-app[data-theme="dark"] .viewpoint-analysis {
    background: var(--surface-strong);
    border-color: var(--border);
}

.chat-app[data-theme="dark"] .viewpoint-card {
    background: var(--surface-muted);
}

.chat-app[data-theme="dark"] .viewpoint-badge-1 {
    background: rgba(143, 169, 255, 0.2);
    color: #8fa9ff;
}

.chat-app[data-theme="dark"] .viewpoint-badge-2 {
    background: rgba(167, 85, 247, 0.2);
    color: #a755f7;
}

.chat-app[data-theme="dark"] .viewpoint-badge-3 {
    background: rgba(236, 72, 153, 0.2);
    color: #ec4899;
}