/* =====================================================
   Statistics Module - Enterprise Analytics CSS
   Complete design system for analytics pages
===================================================== */

/* =====================================================
   CSS Variables & Root Definitions
===================================================== */

:root {
    --stats-primary: #0B3B6F;
    --stats-secondary: #0D9488;
    --stats-accent: #D4A017;
    --stats-navy: #082544;

    --stats-bg: #F8FAFC;
    --stats-card: #FFFFFF;
    --stats-header: #102a43;

    --stats-border: #E2E8F0;
    --stats-divider: #EEF2F7;
    --stats-text-muted: #64748b;
    --stats-text-primary: #0f172a;

    --stats-radius: 20px;
    --stats-radius-lg: 24px;
    --stats-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
    --stats-shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.04);
}

/* =====================================================
   Layout & Structure
===================================================== */

.admin-dashboard-page.admin-statistics-page {
    width: min(1240px, 100%);
    margin-inline: auto;
}

.admin-dashboard-page.admin-statistics-page .section-header {
    padding: 0;
    background: transparent;
    box-shadow: none;
    margin-bottom: 24px;
}

.admin-dashboard-page.admin-statistics-page .section-header h1,
.admin-dashboard-page.admin-statistics-page .section-header p,
.admin-dashboard-page.admin-statistics-page .section-header .eyebrow {
    color: var(--stats-text-primary);
}

.admin-dashboard-page.admin-statistics-page .section-header .eyebrow {
    background: rgba(11, 59, 111, 0.08);
    border-color: rgba(11, 59, 111, 0.12);
    color: var(--stats-primary);
}

.admin-dashboard-page.admin-statistics-page .header-actions .btn {
    min-width: 148px;
}

/* =====================================================
   Hero Section / Page Header
===================================================== */

.admin-dashboard-page.admin-statistics-page .analytics-hub-section {
    margin-top: 1rem;
    padding-top: 0.1rem;
    padding-bottom: 0.25rem;
}

.admin-dashboard-page.admin-statistics-page .admin-panel {
    background: var(--stats-card);
    border: 1px solid rgba(226, 232, 240, 0.95);
    box-shadow: var(--stats-shadow-sm);
    padding: 18px;
    margin: 10px 0;
}

/* =====================================================
   KPI Cards
===================================================== */

.statistics-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.statistics-kpi-grid .stat-card {
    min-height: 132px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 24px;
    border: 1px solid var(--stats-border);
    border-radius: var(--stats-radius);
    background: var(--stats-card);
    box-shadow: var(--stats-shadow);
}

.statistics-kpi-grid .stat-card span {
    color: var(--stats-text-muted);
    font-weight: 850;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
}

.statistics-kpi-grid .stat-card strong {
    font-size: 2.15rem;
    font-weight: 900;
    color: var(--stats-text-primary);
    line-height: 1;
}

/* =====================================================
   Analytics Module Cards
===================================================== */

.statistics-showcase-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr) minmax(280px, 0.65fr);
    gap: 18px;
    margin-bottom: 18px;
}

.statistics-module-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 24px;
    margin-bottom: 24px;
}

.statistics-module-card {
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px;
    border: 1px solid rgba(226, 232, 240, 0.95);
    background: var(--stats-card);
    border-radius: var(--stats-radius);
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.statistics-module-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 24px 56px rgba(15, 23, 42, 0.12);
}

.module-card-top .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--stats-primary);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.78rem;
    margin-bottom: 16px;
}

.statistics-module-card h3 {
    margin: 0;
    font-size: 1.35rem;
    line-height: 1.2;
    color: var(--stats-text-primary);
}

.statistics-module-card p {
    margin: 12px 0 20px;
    color: var(--stats-text-muted);
    line-height: 1.5;
}

.module-card-summary {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 18px;
}

.module-card-summary div {
    padding: 16px;
    border: 1px solid rgba(226, 232, 240, 0.95);
    border-radius: 16px;
    background: var(--stats-bg);
}

.module-card-summary strong {
    display: block;
    font-size: 1.5rem;
    margin-bottom: 6px;
    color: var(--stats-text-primary);
}

.module-card-summary span {
    color: var(--stats-text-muted);
    font-size: 0.9rem;
}

.statistics-module-card .btn-block {
    width: 100%;
    justify-content: center;
}

/* =====================================================
   Analytics Overview & Spotlight
===================================================== */

.analytics-wide-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 18px;
}

.analytics-spotlight {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 330px;
    background:
        linear-gradient(135deg, rgba(11, 59, 111, 0.96), rgba(13, 94, 126, 0.9)),
        radial-gradient(circle at top right, rgba(20, 184, 166, 0.5), transparent 34%);
    color: #ffffff;
    overflow: hidden;
    padding: 28px;
    border-radius: var(--stats-radius-lg);
}

.analytics-spotlight .eyebrow {
    color: #dbeafe;
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.18);
}

.analytics-spotlight h2 {
    max-width: 560px;
    margin: 18px 0 10px;
    color: #ffffff;
    font-size: 34px;
    line-height: 1.08;
}

.analytics-spotlight p {
    max-width: 620px;
    margin: 0;
    color: rgba(255, 255, 255, 0.78);
    font-weight: 700;
}

.analytics-module-overview {
    padding: 22px;
    border-radius: var(--stats-radius);
    border: 1px solid rgba(226, 232, 240, 0.95);
    background: var(--stats-card);
    box-shadow: 0 18px 36px rgba(15, 23, 42, 0.06);
    margin-bottom: 24px;
}

/* =====================================================
   Filters & Search
===================================================== */

.admin-users-search-card {
    margin-top: 0;
    padding: 14px 16px;
    max-width: 100%;
    background: var(--stats-card);
    border: 1px solid var(--stats-border);
    border-radius: 16px;
    margin-bottom: 1.5rem;
}

.admin-users-search {
    display: grid;
    grid-template-columns: minmax(220px, 2fr) minmax(150px, 1fr) minmax(150px, 1fr) minmax(120px, auto);
    gap: 12px;
    align-items: center;
}

.admin-users-search .search-shell {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #ffffff;
    border: 1px solid #dbe4ee;
    border-radius: 12px;
    padding: 10px 14px;
}

.admin-users-search .search-shell i {
    color: var(--stats-text-muted);
}

.admin-users-search .search-shell input {
    border: none;
    outline: none;
    width: 100%;
    font-size: 0.95rem;
    background: transparent;
    padding: 0;
}

.admin-users-search .search-actions-row {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.admin-users-search .search-actions-row .btn {
    min-height: 40px;
    padding: 10px 16px;
}

/* =====================================================
   Data Tables
===================================================== */

.analytics-table-card {
    background: var(--stats-card);
    border: 1px solid rgba(226, 232, 240, 0.95);
    border-radius: var(--stats-radius-lg);
    box-shadow: var(--stats-shadow-sm);
    padding: 1.15rem;
    margin: 1rem 0;
}

.analytics-table-card .table-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding-bottom: 1rem;
    margin-bottom: 0.85rem;
    border-bottom: 1px solid #f1f5f9;
}

.analytics-table-card .table-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.analytics-table-card .sort-link {
    color: inherit;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-weight: 600;
    transition: color 0.2s ease;
}

.analytics-table-card .sort-link:hover {
    color: var(--stats-primary);
}

.analytics-table-card .sort-indicator {
    font-size: 0.8rem;
    opacity: 0.7;
}

.data-table {
    width: 100%;
    min-width: 1200px;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--stats-card);
    border-radius: 18px;
    overflow: hidden;
}

.data-table thead {
    background: var(--stats-header);
    color: #ffffff;
    position: sticky;
    top: 0;
    z-index: 1;
}

.data-table th,
.data-table td {
    padding: 18px 20px;
    text-align: left;
    vertical-align: middle;
    border-bottom: 1px solid rgba(226, 232, 240, 0.94);
    border-right: 1px solid rgba(226, 232, 240, 0.9);
}

.data-table th:last-child,
.data-table td:last-child {
    border-right: none;
}

.data-table th {
    font-size: 0.95rem;
    letter-spacing: 0.01em;
    font-weight: 700;
    white-space: nowrap;
    font-size: 14px;
}

.data-table tbody tr:nth-child(odd) {
    background: var(--stats-bg);
}

.data-table tbody tr {
    transition: all .2s ease;
}

.data-table tbody tr:hover {
    background: #eef6ff;
    box-shadow: inset 0 0 0 9999px rgba(59,130,246,.03);
}

.data-table td.text-right {
    text-align: right;
}

.data-table td[data-label] {
    vertical-align: middle;
}

.table-responsive {
    overflow-x: auto;
}

.data-table thead th {
    border-right: 1px solid rgba(255,255,255,.12);
}

.data-table thead th:last-child {
    border-right: none;
}

.data-table td:first-child,
.data-table th:first-child {
    text-align: center;
    width: 120px;
}

.data-table tbody td {
    font-weight: 500;
}

.data-table tbody tr {
    height: 72px;
}


/* =====================================================
   Badges & Indicators
===================================================== */

.rank-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.82rem;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: #f8fafc;
    color: #0f172a;
    font-weight: 700;
}

.rank-badge.gold {
    background: #fffbeb;
    color: #92400e;
}

.rank-badge.silver {
    background: #eef2ff;
    color: #1d4ed8;
}

.rank-badge.bronze {
    background: #fff7ed;
    color: #7c2d12;
}

.rank-badge.default {
    background: #f1f5f9;
    color: #1e293b;
}

.score-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 64px;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    font-weight: 700;
    color: #0f172a;
    font-size: 0.9rem;
}

.score-badge.high {
    background: #d1fae5;
    color: #065f46;
}

.score-badge.medium {
    background: #fef3c7;
    color: #92400e;
}

.score-badge.low {
    background: #fee2e2;
    color: #991b1b;
}

.badge-blue {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.3rem 0.6rem;
    border-radius: 999px;
    font-size: 0.82rem;
    background: #e0f2fe;
    color: #0369a1;
    font-weight: 700;
}

/* =====================================================
   Cell Styling
===================================================== */

.book-info-cell,
.user-card {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.book-cover-placeholder,
.avatar-circle-sm {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    background: var(--stats-bg);
    color: #1e293b;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.user-card strong,
.book-info-cell strong {
    display: block;
    line-height: 1.2;
    color: var(--stats-text-primary);
}

.user-card .small,
.book-info-cell .small {
    color: var(--stats-text-muted);
    font-size: 0.82rem;
}

/* =====================================================
   Empty States
===================================================== */

.empty-table-state {
    text-align: center;
    padding: 3rem 1rem;
    border: 1px dashed rgba(148, 163, 184, 0.35);
    border-radius: var(--stats-radius-lg);
    background: var(--stats-bg);
    color: #334155;
}

.empty-table-state span {
    display: inline-flex;
    width: 56px;
    height: 56px;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.75rem;
    background: #e2e8f0;
    border-radius: 18px;
}

.empty-table-state h3 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    color: var(--stats-text-primary);
}

.empty-table-state p {
    margin: 0;
    color: var(--stats-text-muted);
}

/* =====================================================
   Pagination
===================================================== */

.pagination-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.pagination-wrapper .page-info {
    color: #475569;
    font-size: 0.95rem;
    font-weight: 600;
}

/* =====================================================
   Charts & Trends
===================================================== */

.admin-dashboard-page.admin-statistics-page .trend-chart {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    min-height: 150px;
    padding-top: 0.6rem;
}

.admin-dashboard-page.admin-statistics-page .trend-bar-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.admin-dashboard-page.admin-statistics-page .trend-bar {
    width: 100%;
    max-width: 34px;
    border-radius: 8px 8px 4px 4px;
    background: linear-gradient(180deg, var(--stats-primary), #1559a5);
    box-shadow: 0 12px 24px rgba(11, 59, 111, 0.12);
    min-height: 4px;
}

.admin-dashboard-page.admin-statistics-page .trend-bar-label,
.admin-dashboard-page.admin-statistics-page .trend-bar-value {
    font-size: 0.72rem;
    color: var(--stats-text-muted);
    text-align: center;
}

.admin-dashboard-page.admin-statistics-page .trend-bar-value {
    font-weight: 700;
}

.trend-chart {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    min-height: 180px;
    padding-top: 1rem;
}

.trend-bar-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.trend-bar {
    width: 100%;
    max-width: 48px;
    border-radius: 8px 8px 4px 4px;
    background: linear-gradient(180deg, var(--stats-primary), #1559a5);
    box-shadow: 0 12px 24px rgba(11, 59, 111, 0.12);
    min-height: 4px;
}

.trend-bar-label {
    font-size: 0.72rem;
    color: var(--stats-text-muted);
    text-align: center;
}

.trend-bar-value {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--stats-text-primary);
}

/* =====================================================
   Rankings & Lists
===================================================== */

.analytics-hub-section {
    margin-top: 24px;
    padding: 0.9rem 0;
}

.analytics-hub-section h2 {
    font-size: 1.35rem;
    margin-bottom: 0.35rem;
    color: var(--stats-text-primary);
}

.analytics-hub-section > p {
    color: var(--stats-text-muted);
    margin-bottom: 0.75rem;
}

.analytics-two-col {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.analytics-rank-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.analytics-rank-list li {
    display: grid;
    grid-template-columns: 28px 1fr auto;
    gap: 0.75rem;
    align-items: center;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--stats-divider);
    transition: background 0.18s ease, transform 0.18s ease;
}

.analytics-rank-list li:last-child {
    border-bottom: none;
}

.analytics-rank-list li:hover {
    transform: translateX(3px);
    background: var(--stats-bg);
}

.rank-index {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    background: var(--stats-bg);
    font-weight: 800;
    font-size: 0.8rem;
    color: var(--stats-text-primary);
}

/* =====================================================
   Top Rank Highlighting
===================================================== */

.top-rank-row {
    background: #fffbf0 !important;
}

.top-rank-row:hover {
    background: #fff7e6 !important;
}

/* =====================================================
   Responsive Design
===================================================== */

@media (max-width: 980px) {
    .statistics-module-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .analytics-table-card .table-summary {
        flex-direction: column;
        align-items: flex-start;
    }

    .analytics-table-card .table-actions {
        width: 100%;
        justify-content: flex-start;
    }

    .analytics-two-col {
        grid-template-columns: 1fr;
    }

    .statistics-showcase-grid,
    .analytics-wide-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 700px) {
    .statistics-module-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    .analytics-table-card {
        padding: 12px;
    }

    .data-table {
        min-width: auto;
    }

    .data-table thead {
        position: relative;
    }

    .data-table th,
    .data-table td {
        padding: 14px 12px;
    }

    .admin-users-search {
        grid-template-columns: 1fr;
    }

    .statistics-showcase-grid,
    .analytics-wide-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .analytics-cards {
        grid-template-columns: 1fr;
    }

    .statistics-kpi-grid {
        grid-template-columns: 1fr;
    }
}

/* =====================================================
   Page-Specific Namespaces (Future Use)
===================================================== */

/* Top Readers Page */
.statistics-readers-page {
    /* Specific overrides for readers page */
}

/* Top Borrowers Page */
.statistics-borrowers-page {
    /* Specific overrides for borrowers page */
}

/* Competition Leaders Page */
.statistics-competition-page {
    /* Specific overrides for competition page */
}

/* Faculty & Group Rankings Page */
.statistics-rankings-page {
    /* Specific overrides for rankings page */
}

/* Physical Books Page */
.statistics-physical-books-page {
    /* Specific overrides for physical books page */
}

/* Digital Books Page */
.statistics-digital-books-page {
    /* Specific overrides for digital books page */
}

/* =====================================================
   Utility Classes for Analytics
===================================================== */

.analytics-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

.statistics-card {
    border-radius: var(--stats-radius);
    border-color: rgba(226, 232, 240, 0.86);
    box-shadow: var(--stats-shadow);
}

.analytics-spotlight {
    border-radius: var(--stats-radius);
    border-color: rgba(226, 232, 240, 0.86);
    box-shadow: var(--stats-shadow);
}

.analytics-panel {
    background: var(--stats-card);
    border-radius: var(--stats-radius);
    border: 1px solid var(--stats-border);
    box-shadow: var(--stats-shadow);
}

/* End of Statistics CSS */