/* =====================================================
   News List
   ===================================================== */

.news-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* =====================================================
   News Card (List Item)
   ===================================================== */

.news-card {
    background: var(--surface);
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(148, 163, 184, 0.12);
    overflow: hidden;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.news-card:hover {
    box-shadow: var(--shadow-card-hover);
}

.news-card.is-expanded {
    box-shadow: var(--shadow-soft);
}

/* Card Preview (Collapsed State) */
.news-card__preview {
    position: relative;
    padding: clamp(16px, 3vw, 24px);
    cursor: pointer;
    transition: background 0.2s ease;
}

.news-card__preview:hover {
    background: var(--surface-subtle);
}

.news-card__preview:focus-visible {
    outline: none;
}

.news-card__header {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.news-card__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.news-card__stats {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.stat-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
}

.stat-item--helpful {
    background: var(--helpful-bg);
    color: var(--helpful-color);
}

.stat-item--comments {
    background: var(--accent-light);
    color: var(--accent-strong);
}

.news-card__title {
    margin: 0 0 8px;
    font-size: clamp(1.05rem, 2.5vw, 1.2rem);
    font-weight: 700;
    line-height: 1.4;
    color: var(--text-strong);
    padding-right: 32px;
}

.news-card__excerpt {
    margin: 0 0 12px;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-medium);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card__meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.meta-separator {
    color: rgba(148, 163, 184, 0.6);
}

/* Source Button - Only visible when expanded */
.source-btn {
    display: none;
    align-items: center;
    gap: 4px;
    margin-left: auto;
    padding: 4px 10px;
    background: var(--accent-light);
    border: 1px solid var(--accent);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-strong);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.news-card.is-expanded .source-btn {
    display: inline-flex;
}

.source-btn:hover {
    background: var(--accent);
    color: #fff;
}

.source-btn i {
    font-size: 0.7rem;
}

/* Info Tooltip for Summary */
.summary-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.summary-header h3 {
    margin: 0 !important;
}

.info-tooltip {
    position: relative;
    display: inline-flex;
}

.info-tooltip__trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    transition: color 0.2s ease;
}

.info-tooltip__trigger:hover {
    color: var(--accent);
}

.info-tooltip__content {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 260px;
    padding: 12px 14px;
    background: var(--text-strong);
    color: #fff;
    border-radius: 12px;
    font-size: 0.78rem;
    line-height: 1.6;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
    z-index: 100;
}

.info-tooltip__content::before {
    content: '';
    position: absolute;
    top: -6px;
    right: 8px;
    width: 12px;
    height: 12px;
    background: var(--text-strong);
    transform: rotate(45deg);
}

.info-tooltip.is-active .info-tooltip__content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.info-tooltip__content strong {
    color: #facc15;
}

.news-card__expand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: 50%;
    color: var(--text-muted);
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.08);
    transition: transform 0.3s ease, background 0.2s ease, border-color 0.2s ease;
}

.news-card__preview:hover .news-card__expand-icon {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}

.news-card.is-expanded .news-card__expand-icon {
    transform: rotate(180deg);
}

.news-card.is-expanded .news-card__excerpt {
    display: none;
}

/* Card Detail (Expanded State) */
.news-card__detail {
    border-top: 1px solid var(--border-subtle);
    animation: slideDown 0.35s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
    }

    to {
        opacity: 1;
        max-height: 5000px;
    }
}

.news-card__body {
    padding: clamp(16px, 3vw, 24px);
    padding-top: clamp(12px, 2vw, 16px);
}

/* Keyword Tags (Text-only) */
.keyword-tag {
    display: inline-flex;
    align-items: center;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-medium);
    white-space: nowrap;
}

.keyword-tag::before {
    content: "#";
    color: var(--text-muted);
    margin-right: 1px;
}

/* Separator between keywords */
.news-card__keywords {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px 10px;
}

.news-card__keywords .keyword-tag:not(:last-child)::after {
    content: "·";
    margin-left: 10px;
    color: var(--text-muted);
}

/* Star Rating Badge (Importance) */
.importance-badge {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(250, 204, 21, 0.15);
    color: #ca8a04;
    font-size: 0.7rem;
    letter-spacing: -1px;
}

.importance-badge .star {
    color: #facc15;
}

.importance-badge .star--empty {
    color: #d1d5db;
}

/* Article Content */
.news-article__lead {
    margin: 0 0 20px;
    font-size: clamp(0.95rem, 2.5vw, 1.05rem);
    font-weight: 500;
    color: var(--text-medium);
    line-height: 1.7;
    padding: 14px 18px;
    background: var(--surface-subtle);
    border-left: 4px solid var(--accent);
    border-radius: 0 var(--radius-small) var(--radius-small) 0;
}

.news-article__content {
    color: var(--text-strong);
    font-size: clamp(0.9rem, 2.5vw, 0.98rem);
    line-height: 1.8;
}

/* Content Split Layout (1:1) */
.content-split {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.content-split__left,
.content-split__right {
    flex: 1;
    padding: 16px;
    background: var(--surface-subtle);
    border-radius: var(--radius-small);
    border: 1px solid var(--border-subtle);
}

.content-split__left h3,
.content-split__right h3 {
    margin: 0 0 12px;
    font-size: 0.95rem;
}

.content-split__left ul,
.content-split__right ul {
    margin: 0;
    padding-left: 16px;
}

.content-split__left li,
.content-split__right li {
    margin-bottom: 6px;
    font-size: 0.88rem;
}

.content-split__right {
    background: linear-gradient(135deg, rgba(87, 142, 126, 0.08), rgba(87, 142, 126, 0.04));
    border-color: rgba(87, 142, 126, 0.25);
}

.content-split__right h3 {
    color: var(--accent-strong);
}

.summary-list {
    list-style: none;
    padding-left: 0 !important;
}

.summary-list li {
    position: relative;
    padding-left: 20px;
    color: var(--text-medium);
    text-decoration: underline;
    text-decoration-color: var(--text-strong);
    text-underline-offset: 3px;
}

.summary-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

@media (max-width: 640px) {
    .content-split {
        flex-direction: column;
        gap: 12px;
    }
}

.news-article__content h3 {
    margin: 24px 0 12px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-strong);
}

.news-article__content h3:first-child {
    margin-top: 0;
}

.news-article__content p {
    margin: 0 0 18px;
    line-height: 1.8;
    color: var(--text-strong);
    font-size: 0.92rem;
}

.news-article__content ul {
    margin: 0 0 18px;
    padding-left: 18px;
}

.news-article__content li {
    margin-bottom: 8px;
    padding-left: 6px;
}

.news-article__content li::marker {
    color: var(--accent);
}