/* ==========================================================================
   BARTRION — About / Platform Overview Styles
   ========================================================================== */

.about-page-container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 40px 24px 80px;
    display: flex;
    flex-direction: column;
    gap: 72px;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.about-hero {
    position: relative;
    background: radial-gradient(120% 120% at 50% -20%, rgba(2, 132, 199, 0.15) 0%, rgba(15, 23, 42, 0.02) 100%), var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 64px 48px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.about-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 9999px;
    background: rgba(2, 132, 199, 0.1);
    color: var(--accent-blue);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 24px;
    border: 1px solid rgba(2, 132, 199, 0.2);
}

.about-hero-badge svg {
    width: 16px;
    height: 16px;
}

.about-hero-title {
    font-size: 42px;
    line-height: 1.15;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.03em;
    max-width: 980px;
    margin: 0 auto 20px;
}

.about-hero-title span {
    background: linear-gradient(135deg, #0284c7 0%, #4f46e5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-hero-description {
    font-size: 18px;
    line-height: 1.6;
    color: var(--text-muted);
    max-width: 820px;
    margin: 0 auto 36px;
}

.about-hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, #0284c7 0%, #4f46e5 100%);
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all 0.2s ease;
    box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-hero-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
    color: #ffffff;
}

.btn-hero-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-panel);
    color: var(--text-main);
    font-size: 16px;
    font-weight: 600;
    padding: 14px 26px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-hero-secondary:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background: rgba(2, 132, 199, 0.04);
}

/* Stats Row */
.about-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding-top: 36px;
    border-top: 1px solid rgba(203, 213, 225, 0.6);
}

.stat-card {
    text-align: center;
}

.stat-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.stat-value.highlight-blue {
    color: #0284c7;
}

.stat-value.highlight-indigo {
    color: #4f46e5;
}

.stat-value.highlight-green {
    color: #10b981;
}

.stat-value.highlight-amber {
    color: #f59e0b;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   Section Headers
   -------------------------------------------------------------------------- */
.section-header {
    text-align: center;
    max-width: 860px;
    margin: 0 auto 40px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-blue);
    margin-bottom: 8px;
}

.section-title {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Market Problem vs BARTRION Solution
   -------------------------------------------------------------------------- */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.comparison-card {
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.comparison-card.card-negative {
    background: #fffdfd;
    border: 1px solid #fee2e2;
}

.comparison-card.card-positive {
    background: #f8fafc;
    border: 1px solid #bae6fd;
}

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

.comparison-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-negative .comparison-icon {
    background: #fee2e2;
    color: #ef4444;
}

.card-positive .comparison-icon {
    background: #e0f2fe;
    color: #0284c7;
}

.comparison-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
}

.comparison-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.comparison-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-main);
}

.item-bullet {
    width: 18px;
    height: 18px;
    min-width: 18px;
    margin-top: 2px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-negative .item-bullet {
    background: #fee2e2;
    color: #dc2626;
}

.card-positive .item-bullet {
    background: #dcfce7;
    color: #16a34a;
}

/* --------------------------------------------------------------------------
   Platform Pipeline / How it works
   -------------------------------------------------------------------------- */
.pipeline-steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    position: relative;
}

.pipeline-step-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.pipeline-step-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--accent-blue);
}

.step-badge {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: #0284c7;
    color: #ffffff;
    font-size: 14px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-main);
}

.step-card-desc {
    font-size: 13.5px;
    color: var(--text-muted);
    line-height: 1.55;
}

/* --------------------------------------------------------------------------
   Feature Modules Grid
   -------------------------------------------------------------------------- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: all 0.2s ease;
}

.feature-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
}

.feature-card-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(2, 132, 199, 0.08);
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-main);
}

.feature-card-desc {
    font-size: 13.5px;
    color: var(--text-muted);
    line-height: 1.55;
}

/* --------------------------------------------------------------------------
   Complete Live Report Feed Showcase
   -------------------------------------------------------------------------- */
.report-showcase-wrapper {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.report-showcase-header {
    background: #0f172a;
    color: #ffffff;
    padding: 32px 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.showcase-header-left {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.showcase-header-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: #38bdf8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.showcase-header-title {
    font-size: 24px;
    font-weight: 800;
    color: #ffffff;
}

.showcase-header-sub {
    font-size: 14px;
    color: #94a3b8;
}

.showcase-meta-badges {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.meta-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 600;
}

.meta-badge.badge-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.meta-badge.badge-info {
    background: rgba(56, 189, 248, 0.15);
    color: #7dd3fc;
    border: 1px solid rgba(56, 189, 248, 0.3);
}

/* Sticky In-Page Navigation Bar */
.report-feed-nav {
    position: sticky;
    top: 60px;
    z-index: 900;
    background: #1e293b;
    padding: 10px 20px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    border-bottom: 1px solid #334155;
    box-shadow: var(--shadow-md);
}

.feed-nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.06);
    color: #cbd5e1;
    font-size: 13px;
    font-weight: 600;
    border-radius: 6px;
    text-decoration: none;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.feed-nav-link:hover {
    background: #0284c7;
    color: #ffffff;
}

.feed-nav-link.active {
    background: #0284c7;
    color: #ffffff;
}

/* Continuous Report Feed Body */
.report-feed-container {
    padding: 40px 36px;
    display: flex;
    flex-direction: column;
    gap: 48px;
    background: var(--bg-panel);
}

.report-feed-section {
    scroll-margin-top: 130px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(203, 213, 225, 0.6);
}

.report-feed-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.feed-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.feed-section-title-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.feed-section-num {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: #0f172a;
    color: #ffffff;
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feed-section-title {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-main);
}

.status-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.status-chip.chip-critical {
    background: #fee2e2;
    color: #dc2626;
    border: 1px solid #fca5a5;
}

.status-chip.chip-warning {
    background: #fef3c7;
    color: #d97706;
    border: 1px solid #fcd34d;
}

.status-chip.chip-success {
    background: #dcfce7;
    color: #16a34a;
    border: 1px solid #86efac;
}

.status-chip-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
}

.chip-critical .status-chip-dot {
    background: #dc2626;
}

.chip-warning .status-chip-dot {
    background: #d97706;
}

.chip-success .status-chip-dot {
    background: #16a34a;
}

/* Metric Cards */
.report-grid-two {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.report-grid-three {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.report-grid-four {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.report-metric-card {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.metric-title {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.metric-highlight {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-main);
}

.metric-desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Defect / Risk Alert Cards */
.report-defect-card {
    border-radius: 12px;
    padding: 20px;
    border-left: 4px solid;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.report-defect-card.defect-critical {
    background: #fef2f2;
    border-color: #ef4444;
}

.report-defect-card.defect-warning {
    background: #fffbeb;
    border-color: #f59e0b;
}

.report-defect-card.defect-success {
    background: #f0fdf4;
    border-color: #10b981;
}

.defect-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
}

.defect-body {
    font-size: 13.5px;
    line-height: 1.6;
    color: #334155;
}

.defect-norm {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    background: rgba(0, 0, 0, 0.03);
    padding: 6px 10px;
    border-radius: 6px;
    border-left: 2px solid var(--accent-blue);
}

/* Checklist items */
.checklist-card {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.checklist-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.checklist-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13.5px;
    line-height: 1.5;
    color: var(--text-main);
}

.checklist-bullet {
    width: 20px;
    height: 20px;
    min-width: 20px;
    border-radius: 50%;
    background: #dbeafe;
    color: #0284c7;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 12px;
}

/* Accordion in Feed */
.report-accordion {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.accordion-item {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    background: var(--bg-panel);
    transition: border-color 0.2s ease;
}

.accordion-item:hover {
    border-color: #94a3b8;
}

.accordion-header {
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    background: #f8fafc;
    user-select: none;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
}

.accordion-header svg {
    transition: transform 0.2s ease;
    min-width: 16px;
}

.accordion-item.open .accordion-header svg {
    transform: rotate(180deg);
}

.accordion-item.open .accordion-header {
    background: #f1f5f9;
    border-bottom: 1px solid var(--border-color);
}

.accordion-body {
    display: none;
    padding: 16px 18px;
    font-size: 13.5px;
    line-height: 1.6;
    color: var(--text-main);
    background: var(--bg-panel);
}

.accordion-item.open .accordion-body {
    display: block;
}

/* Table in Report */
.report-table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 10px;
}

.report-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    text-align: left;
}

.report-table th {
    background: #f1f5f9;
    padding: 12px 16px;
    font-weight: 700;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
}

.report-table td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(203, 213, 225, 0.5);
    color: var(--text-main);
}

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

.report-table tr:nth-child(even) {
    background: #f8fafc;
}

/* --------------------------------------------------------------------------
   Audience / For Whom Section
   -------------------------------------------------------------------------- */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.audience-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: var(--shadow-sm);
}

.audience-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-indigo);
}

.audience-title {
    font-size: 19px;
    font-weight: 700;
    color: var(--text-main);
}

.audience-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   CTA Bottom Banner
   -------------------------------------------------------------------------- */
.about-cta-banner {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    border-radius: 24px;
    padding: 56px 48px;
    text-align: center;
    color: #ffffff;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.cta-banner-title {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.02em;
    max-width: 760px;
}

.cta-banner-desc {
    font-size: 16px;
    color: #cbd5e1;
    max-width: 660px;
    line-height: 1.6;
}

.cta-banner-buttons {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .about-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .pipeline-steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .audience-grid {
        grid-template-columns: 1fr;
    }
    .report-grid-two,
    .report-grid-three,
    .report-grid-four {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .about-page-container {
        padding: 24px 16px 60px;
        gap: 48px;
    }
    .about-hero {
        padding: 40px 20px;
    }
    .about-hero-title {
        font-size: 28px;
    }
    .about-hero-description {
        font-size: 15px;
    }
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    .pipeline-steps-grid {
        grid-template-columns: 1fr;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .about-stats-grid {
        grid-template-columns: 1fr;
    }
    .report-feed-container {
        padding: 24px 16px;
        gap: 36px;
    }
    .report-showcase-header {
        padding: 24px 16px;
    }
    .about-cta-banner {
        padding: 40px 20px;
    }
    .cta-banner-title {
        font-size: 24px;
    }
}