/* =============================================
   AI INSIGHTS - STYLE
   Light theme
   ============================================= */
:root {
    --bg-primary: #f8f9fc;
    --bg-secondary: #ffffff;
    --bg-card: rgba(0, 0, 0, 0.03);
    --accent-blue: #2563eb;
    --accent-purple: #7c3aed;
    --accent-cyan: #0891b2;
    --accent-green: #059669;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(37, 99, 235, 0.35);
    --grad-primary: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    --grad-text: linear-gradient(135deg, #2563eb, #7c3aed, #0891b2);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', -apple-system, sans-serif;
    --accent-yellow: #d97706;
    --accent-red: #dc2626;

    /* Alpha 系列变量 */
    --accent-blue-10: rgba(37, 99, 235, 0.08);
    --accent-blue-12: rgba(37, 99, 235, 0.10);
    --accent-blue-20: rgba(37, 99, 235, 0.15);
    --accent-blue-25: rgba(37, 99, 235, 0.20);
    --accent-purple-10: rgba(124, 58, 237, 0.08);
    --accent-purple-12: rgba(124, 58, 237, 0.10);
    --accent-purple-20: rgba(124, 58, 237, 0.15);
    --accent-green-06: rgba(5, 150, 105, 0.06);
    --accent-green-12: rgba(5, 150, 105, 0.10);
    --accent-green-20: rgba(5, 150, 105, 0.15);
    --accent-green-30: rgba(5, 150, 105, 0.22);
    --accent-yellow-12: rgba(217, 119, 6, 0.10);
    --accent-red-12: rgba(220, 38, 38, 0.10);
    --bg-card-2: rgba(0, 0, 0, 0.02);
    --bg-card-3: rgba(0, 0, 0, 0.025);
    --overlay-dark-50: rgba(15, 23, 42, 0.40);
    --overlay-dark-60: rgba(15, 23, 42, 0.50);
    --text-on-gradient: #ffffff;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding: 0 24px 40px;
}

/* ---- HEADER ---- */
.header {
    padding: 32px 0 24px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 28px;
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 12px;
}

.header-title {
    font-size: 1.6rem;
    font-weight: 800;
}

.header-sub {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.header-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-badge {
    padding: 5px 14px;
    background: var(--accent-green-12);
    border: 1px solid var(--accent-green-30);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--accent-green);
    font-weight: 600;
}

.header-count {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ---- FILTER ---- */
.filter-bar {
    max-width: 1400px;
    margin: 0 auto 28px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 18px;
    border-radius: 50px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.filter-btn:hover {
    border-color: var(--accent-blue);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--accent-blue-12);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

/* ---- PRODUCT GRID ---- */
.product-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ---- PRODUCT CARD ---- */
.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    animation: cardIn 0.4s ease both;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--card-grad, var(--grad-primary));
}

.product-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px var(--accent-blue-12);
}

@keyframes cardIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 14px;
}

.card-logo {
    font-size: 2.2rem;
    line-height: 1;
}

.card-trend {
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 600;
}

.trend-up {
    background: var(--accent-green-12);
    color: var(--accent-green);
}

.trend-stable {
    background: var(--accent-yellow-12);
    color: var(--accent-yellow);
}

.trend-down {
    background: var(--accent-red-12);
    color: var(--accent-red);
}

.card-name {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.card-company {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

/* ---- ISSUE BADGE ---- */
.card-issue {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 700;
    background: var(--accent-blue-10);
    border: 1px solid var(--accent-blue-25);
    color: var(--accent-blue);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

/* ---- ONE-LINER ---- */
.card-one-liner {
    font-size: 0.88rem;
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.6;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-tagline {
    font-size: 0.85rem;
    color: var(--accent-blue);
    font-weight: 500;
    margin-bottom: 12px;
}

.card-desc {
    font-size: 0.83rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}

.card-tag {
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.7rem;
    background: var(--accent-purple-10);
    border: 1px solid var(--accent-purple-20);
    color: var(--accent-purple);
}

.card-category {
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.7rem;
    background: var(--accent-blue-10);
    border: 1px solid var(--accent-blue-20);
    color: var(--accent-blue);
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.card-stars {
    font-size: 0.85rem;
    color: var(--accent-yellow);
    letter-spacing: 1px;
}

.card-cta {
    font-size: 0.78rem;
    color: var(--accent-blue);
    font-weight: 500;
}

.card-incomplete {
    font-size: 0.7rem;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1px 6px;
}

.tab-empty {
    padding: 48px 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ---- DETAIL MODAL ---- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-dark-60);
    backdrop-filter: blur(12px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    animation: fadeIn 0.2s ease;
}

.modal-overlay.hidden {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    max-width: 680px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    padding: 36px;
    box-shadow: 0 24px 80px var(--overlay-dark-50);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.detail-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.detail-logo {
    font-size: 2.8rem;
}

.detail-name {
    font-size: 1.5rem;
    font-weight: 800;
}

.detail-company {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.detail-tagline {
    font-size: 1rem;
    color: var(--accent-blue);
    font-weight: 500;
    margin-bottom: 20px;
}

.detail-desc {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.detail-section {
    margin-bottom: 24px;
}

.detail-section-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.detail-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.detail-list li {
    padding: 10px 14px;
    background: var(--bg-card-3);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--accent-blue);
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.detail-list.insights li {
    border-left-color: var(--accent-green);
}

.detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.detail-meta-item {
    padding: 8px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.detail-meta-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    display: block;
    margin-bottom: 2px;
}

.detail-close {
    display: block;
    margin: 24px auto 0;
    padding: 10px 32px;
    border-radius: 50px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 0.88rem;
    cursor: pointer;
    transition: all var(--transition);
}

.detail-close:hover {
    border-color: var(--accent-blue);
    color: var(--text-primary);
}

/* ---- OFFICIAL LINK ---- */
.detail-official-link {
    padding: 4px 12px;
    border-radius: 50px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition);
    white-space: nowrap;
}

.detail-official-link:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

/* ---- DETAIL TABS ---- */
.detail-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0;
}

.detail-tab-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition);
    white-space: nowrap;
}

.detail-tab-btn:hover {
    color: var(--text-secondary);
}

.detail-tab-btn.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}

.detail-tab-panel {
    display: none;
}

.detail-tab-panel.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

/* ---- MY TAKE BLOCK ---- */
.my-take {
    margin-top: 20px;
    padding: 16px 20px;
    background: var(--accent-green-06);
    border: 1px solid var(--accent-green-20);
    border-radius: var(--radius-md);
    position: relative;
}

.my-take-label {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--accent-green);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.my-take-text {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-style: italic;
}

/* ---- COMPETITION TABLE ---- */
.competition-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
    font-size: 0.8rem;
}

.competition-table th {
    text-align: left;
    padding: 8px 12px;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
}

.competition-table td {
    padding: 10px 12px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--bg-card);
    vertical-align: top;
    line-height: 1.5;
}

.competition-table tr:last-child td {
    border-bottom: none;
}

.competition-table tr:hover td {
    background: var(--bg-card-2);
}

/* ---- KEY METRICS GRID ---- */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 14px;
    margin-top: 4px;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px 16px 14px;
    text-align: center;
    transition: border-color var(--transition);
}

.metric-card:hover {
    border-color: var(--border-hover);
}

.metric-value {
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: 6px;
}

.metric-label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 8px;
}

.metric-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 0.68rem;
    color: var(--text-muted);
}

.metric-link {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 700;
}

.metric-link:hover {
    text-decoration: underline;
}

/* ---- TIMELINE ---- */
.timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding-left: 20px;
    border-left: 2px solid var(--border);
    margin-top: 4px;
}

.timeline-node {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    position: relative;
    padding-bottom: 20px;
}

.timeline-node:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 4px;
    margin-left: -27px;
    border: 2px solid var(--bg-primary);
}

.timeline-dot--launch    { background: var(--accent-green); }
.timeline-dot--milestone { background: var(--accent-blue); }
.timeline-dot--feature   { background: var(--accent-purple); }
.timeline-dot--funding   { background: var(--accent-yellow); }

.timeline-content {
    flex: 1;
}

.timeline-date {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 3px;
}

.timeline-event {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 6px;
}

.timeline-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 50px;
    font-size: 0.68rem;
    font-weight: 600;
}

.timeline-badge--launch    { background: var(--accent-green-12);   color: var(--accent-green); }
.timeline-badge--milestone { background: var(--accent-blue-12);  color: var(--accent-blue); }
.timeline-badge--feature   { background: var(--accent-purple-12); color: var(--accent-purple); }
.timeline-badge--funding   { background: var(--accent-yellow-12);  color: var(--accent-yellow); }

/* ---- SOURCES LIST ---- */
.sources-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 4px;
}

.source-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    background: var(--bg-card-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition);
}

.source-item:hover {
    border-color: var(--border-hover);
}

.source-main {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

.source-badge {
    padding: 2px 8px;
    border-radius: 50px;
    font-size: 0.68rem;
    font-weight: 600;
    flex-shrink: 0;
}

.source-badge--official { background: var(--accent-blue-12);  color: var(--accent-blue); }
.source-badge--media    { background: var(--accent-purple-12); color: var(--accent-purple); }
.source-badge--report   { background: var(--accent-yellow-12);  color: var(--accent-yellow); }

.source-title {
    font-size: 0.85rem;
    color: var(--accent-blue);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.source-title:hover {
    text-decoration: underline;
}

.source-title--nolink {
    color: var(--text-secondary);
}

.source-date {
    font-size: 0.72rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* ---- FOOTER ---- */
.footer {
    max-width: 1400px;
    margin: 48px auto 0;
    padding: 20px 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer p {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    .product-grid {
        grid-template-columns: 1fr;
    }

    .header-title {
        font-size: 1.3rem;
    }

    .modal-card {
        padding: 24px;
    }
}