/**
 * Common UI Components & Foundations for Edu Center Admin
 * Establishes cohesive UI building blocks (Heroes, Cards, Tables, Toolbars, Pills, Notes).
 */

/* ==========================================================================
   1. Global Feedback & Overlay Components
   ========================================================================== */

/* Flash message / Toast Alert */
.admin-toast-alert {
    position: fixed;
    top: 50px;
    right: 20px;
    width: min(520px, calc(100vw - 40px));
    z-index: 999999;
    border-radius: var(--admin-radius-md, 12px);
    box-shadow: var(--admin-shadow-lg);
    backdrop-filter: blur(8px);
}

/* Loading Overlay */
.admin-loading-overlay {
    display: none;
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.75);
    z-index: 9999999;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
}

.admin-loading-content {
    text-align: center;
    color: #ffffff;
}

.admin-loading-spinner {
    width: 3.5rem;
    height: 3.5rem;
}

.admin-loading-text {
    margin-top: 18px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* ==========================================================================
   2. Unified Page Hero Foundation
   Aliased classes: .admin-page-hero, .workspace-hero, .management-hero,
                    .seo-hero, .room-page-hero, .subject-hero
   ========================================================================== */
.admin-page-hero,
.workspace-hero,
.management-hero,
.seo-hero,
.room-page-hero,
.subject-hero,
.marketing-hero {
    position: relative;
    padding: 24px 28px;
    border-radius: var(--admin-radius-xl, 20px) !important;
    background: var(--admin-hero-bg, linear-gradient(135deg, #ffffff 0%, var(--admin-surface-soft) 100%)) !important;
    border: 1px solid var(--admin-border, #dbe5f3) !important;
    box-shadow: var(--admin-shadow-md, 0 10px 25px rgba(15, 23, 42, 0.06)) !important;
    margin-bottom: 22px;
    overflow: hidden;
}

.admin-page-hero::before,
.workspace-hero::before,
.management-hero::before,
.seo-hero::before,
.room-page-hero::before,
.subject-hero::before,
.marketing-hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: linear-gradient(180deg, var(--admin-primary) 0%, var(--admin-primary-dark) 100%);
}

.hero-caption,
.section-kicker {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--admin-primary) !important;
    margin-bottom: 8px;
}

.hero-title,
.management-hero-title,
.seo-hero-title,
.room-page-title,
.subject-hero-title,
.marketing-hero-title {
    font-size: 26px;
    font-weight: 700;
    line-height: 1.25;
    color: var(--admin-text, #213047);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.hero-text,
.management-hero-subtitle,
.seo-hero-subtitle,
.room-page-subtitle,
.subject-hero-copy,
.marketing-hero-copy {
    font-size: 13.5px;
    line-height: 1.65;
    color: var(--admin-text-muted, #6c7b90);
    max-width: 820px;
    margin-bottom: 0;
}

/* ==========================================================================
   3. Unified Admin Card Foundation
   Aliased classes: .admin-card, .workspace-card, .management-card,
                    .subject-card, .analytics-panel, .analytics-filter-card,
                    .analytics-chart-card, .analytics-table-card, .insight-card
   ========================================================================== */
.admin-card,
.workspace-card,
.management-card,
.subject-card,
.analytics-panel,
.analytics-filter-card,
.analytics-chart-card,
.analytics-table-card,
.insight-card,
.pcoded-content .card,
.class-search-card,
.post-card,
.archive-card,
.bulk-refund-card,
.refund-field-card,
.refund-list-card,
.payment-method-form-card,
.room-admin-form-card,
.study-shift-admin-form-card,
.subject-form-card,
.public-setting-card,
.zalo-token-form-card,
.accept-form-card,
.accept-summary-card,
.account-list-card,
.class-form-card {
    border: 1px solid var(--admin-border, #dbe5f3) !important;
    border-radius: var(--admin-radius-lg, 14px) !important;
    background: var(--admin-surface, #ffffff);
    box-shadow: var(--admin-shadow-sm, 0 2px 8px rgba(15, 23, 42, 0.04));
    margin-bottom: 20px;
    overflow: visible !important;
    transition: box-shadow 0.2s ease;
}

.admin-card > .card-header:first-child,
.workspace-card > .card-header:first-child,
.management-card > .card-header:first-child,
.subject-card > .card-header:first-child,
.pcoded-content .card > .card-header:first-child {
    border-top-left-radius: calc(var(--admin-radius-lg, 14px) - 1px) !important;
    border-top-right-radius: calc(var(--admin-radius-lg, 14px) - 1px) !important;
}

.admin-card > .card-footer:last-child,
.workspace-card > .card-footer:last-child,
.management-card > .card-footer:last-child,
.subject-card > .card-footer:last-child,
.pcoded-content .card > .card-footer:last-child {
    border-bottom-left-radius: calc(var(--admin-radius-lg, 14px) - 1px) !important;
    border-bottom-right-radius: calc(var(--admin-radius-lg, 14px) - 1px) !important;
}

.admin-card:hover,
.workspace-card:hover,
.management-card:hover,
.archive-card:hover,
.post-card:hover {
    box-shadow: var(--admin-shadow-md, 0 10px 25px rgba(15, 23, 42, 0.06));
}

.admin-card .card-header,
.workspace-card .card-header,
.management-card .card-header,
.subject-card .card-header,
.pcoded-content .card .card-header {
    padding: 16px 20px;
    background: #ffffff;
    border-bottom: 1px solid var(--admin-border, #dbe5f3);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pcoded-content .card .card-header h5 {
    margin-bottom: 0;
    font-size: 16px;
    font-weight: 700;
    color: var(--admin-text, #213047);
}

.admin-card .card-body,
.workspace-card .card-body,
.management-card .card-body,
.subject-card .card-body,
.pcoded-content .card .card-body {
    padding: 20px;
}

/* ==========================================================================
   4. Unified Stat & Metric Cards
   Aliased classes: .metric-card, .subject-stat-card, .teacher-detail-card,
                    .account-detail-card
   ========================================================================== */
.hero-metrics,
.subject-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin-top: 18px;
}

.metric-card,
.hero-metric-card,
.seo-stat-card,
.subject-stat-card,
.teacher-detail-card,
.account-detail-card {
    border: 1px solid var(--admin-border, #dbe5f3);
    border-radius: var(--admin-radius-md, 12px);
    padding: 14px 18px;
    background: #ffffff;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.03);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.metric-card:hover,
.hero-metric-card:hover,
.seo-stat-card:hover,
.subject-stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--admin-shadow-sm);
}

.metric-label,
.hero-metric-label,
.seo-stat-label,
.subject-stat-label,
.teacher-detail-label,
.account-detail-label {
    display: block;
    font-size: 11.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--admin-text-muted, #6c7b90);
    margin-bottom: 6px;
}

.metric-value,
.hero-metric-value,
.seo-stat-value,
.subject-stat-value,
.teacher-detail-value,
.account-detail-value {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--admin-text, #213047);
    line-height: 1.2;
}

.metric-hint {
    display: block;
    font-size: 11.5px;
    color: var(--admin-text-muted, #6c7b90);
    margin-top: 4px;
}

/* ==========================================================================
   5. Unified Data Tables Foundation
   Aliased classes: .admin-table, .results-table
   ========================================================================== */
.admin-table,
.results-table {
    width: 100%;
    margin-bottom: 0;
    border-collapse: separate;
    border-spacing: 0;
}

.admin-table thead th,
.results-table thead th {
    background: var(--admin-surface-alt, #f8fafc) !important;
    color: var(--admin-text-muted, #6c7b90) !important;
    font-size: 11.5px !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.05em !important;
    padding: 14px 16px !important;
    border-top: 0 !important;
    border-bottom: 1px solid var(--admin-border, #dbe5f3) !important;
    white-space: nowrap;
    vertical-align: middle;
}

.admin-table tbody td,
.results-table tbody td {
    padding: 13px 16px !important;
    vertical-align: middle;
    border-top: 0;
    border-bottom: 1px solid #edf2f7;
    color: var(--admin-text, #213047);
    font-size: 13.5px;
    transition: background-color 0.15s ease;
}

.admin-table tbody tr:hover td,
.results-table tbody tr:hover td,
.table-hover tbody tr:hover td {
    background-color: color-mix(in srgb, var(--admin-primary) 3.5%, transparent) !important;
}

/* ==========================================================================
   6. Unified Filter & Search Toolbars
   Aliased classes: .filter-shell, .search-bar, .table-toolbar
   ========================================================================== */
.filter-shell {
    border: 1px solid var(--admin-border, #dbe5f3) !important;
    border-radius: var(--admin-radius-lg, 16px) !important;
    padding: 18px 20px;
    background: var(--admin-surface-alt, #f8fafc) !important;
    margin-bottom: 18px;
}

.filter-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--admin-text-muted, #6c7b90);
    margin-bottom: 6px;
    display: block;
}

.filter-grid {
    display: grid !important;
    grid-template-columns: minmax(240px, 1.8fr) minmax(200px, 1.2fr) auto !important;
    gap: 16px !important;
    align-items: flex-end !important;
}

.filter-grid .filter-actions {
    display: inline-flex !important;
    align-items: center !important;
    gap: 10px !important;
    height: 40px !important;
    margin: 0 !important;
    align-self: flex-end !important;
}

.filter-grid .filter-actions .btn {
    height: 40px !important;
    min-height: 40px !important;
    padding: 0 18px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    white-space: nowrap !important;
    line-height: 1 !important;
    margin: 0 !important;
    border-radius: var(--admin-radius-sm, 8px) !important;
    box-sizing: border-box !important;
}

.filter-grid .form-control {
    height: 40px !important;
    min-height: 40px !important;
    border-radius: var(--admin-radius-sm, 8px) !important;
    box-sizing: border-box !important;
}

.filter-grid .bootstrap-select > .btn {
    height: 40px !important;
    min-height: 40px !important;
    border-radius: var(--admin-radius-sm, 8px) !important;
    display: flex !important;
    align-items: center !important;
    box-sizing: border-box !important;
}

@media (max-width: 991.98px) {
    .filter-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    }
    .filter-grid .filter-actions {
        grid-column: 1 / -1 !important;
        justify-content: flex-end !important;
    }
}

@media (max-width: 575.98px) {
    .filter-grid {
        grid-template-columns: 1fr !important;
    }
    .filter-grid .filter-actions {
        width: 100% !important;
        justify-content: stretch !important;
    }
    .filter-grid .filter-actions .btn {
        flex: 1 !important;
    }
}

.table-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.toolbar-note {
    font-size: 12.5px;
    color: var(--admin-text-muted, #6c7b90);
}

.bulk-actions,
.filter-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.filter-actions .btn,
.bulk-actions .btn {
    border-radius: var(--admin-radius-sm, 8px);
    white-space: nowrap;
}

/* ==========================================================================
   7. Unified Status Badges & Pills
   Harmonizes status colors across student, classroom, attendance, accounts
   ========================================================================== */
.admin-badge,
.status-badge,
.account-meta-pill,
.teacher-meta-pill,
.classroom-badge,
.subject-code,
.room-admin-badge,
.study-shift-admin-badge,
.student-code,
.pcoded-content .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 11px;
    border-radius: var(--admin-radius-pill, 999px) !important;
    font-size: 11.5px;
    font-weight: 700;
    line-height: 1.3;
    border: 1px solid transparent;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
}

/* Status variants mapped to Semantic Tokens */
.status-success,
.badge-success,
.badge-light-success,
.account-meta-pill.is-account-active,
.teacher-meta-pill.is-account-active {
    background-color: var(--status-success-bg) !important;
    color: var(--status-success-text) !important;
    border-color: var(--status-success-border) !important;
}

.status-waiting,
.status-pending,
.badge-warning,
.badge-light-warning {
    background-color: var(--status-warning-bg) !important;
    color: var(--status-warning-text) !important;
    border-color: var(--status-warning-border) !important;
}

.status-cancel,
.status-danger,
.badge-danger,
.badge-light-danger,
.account-meta-pill.is-account-locked,
.teacher-meta-pill.is-account-locked {
    background-color: var(--status-danger-bg) !important;
    color: var(--status-danger-text) !important;
    border-color: var(--status-danger-border) !important;
}

.status-no-response,
.status-info,
.badge-info,
.badge-light-info,
.student-code {
    background-color: var(--status-info-bg) !important;
    color: var(--status-info-text) !important;
    border-color: var(--status-info-border) !important;
}

.status-trial,
.status-purple {
    background-color: var(--status-purple-bg) !important;
    color: var(--status-purple-text) !important;
    border-color: var(--status-purple-border) !important;
}

.badge-secondary,
.badge-light-secondary,
.badge-light {
    background-color: var(--admin-surface-alt, #f1f5f9) !important;
    color: var(--admin-text-muted, #64748b) !important;
    border-color: var(--admin-border, #e2e8f0) !important;
}

.classroom-badge,
.room-admin-badge,
.study-shift-admin-badge,
.subject-code,
.badge-primary,
.badge-light-primary {
    background-color: color-mix(in srgb, var(--admin-primary) 10%, transparent) !important;
    color: var(--admin-primary) !important;
    border-color: color-mix(in srgb, var(--admin-primary) 20%, transparent) !important;
}

/* ==========================================================================
   8. Unified Admin Callout / Note Boxes
   Aliased classes: .admin-note, .room-admin-note, .study-shift-admin-note,
                    .academic-year-note, .branch-note, .filter-hint
   ========================================================================== */
.admin-note,
.room-admin-note,
.study-shift-admin-note,
.academic-year-note,
.branch-note,
.payment-method-note,
.subject-form-note,
.filter-hint {
    border-radius: var(--admin-radius-md, 12px) !important;
    border: 1px solid color-mix(in srgb, var(--admin-primary) 20%, transparent) !important;
    background: color-mix(in srgb, var(--admin-primary) 4%, #ffffff) !important;
    color: var(--admin-text, #213047) !important;
    padding: 13px 16px !important;
    font-size: 13px;
    line-height: 1.6;
    display: block;
}

/* ==========================================================================
   9. Unified Dashboard Session Cards
   ========================================================================== */
.dashboard-session-card {
    border: 1px solid var(--admin-border, #dbe5f3) !important;
    border-radius: var(--admin-radius-lg, 14px) !important;
    background: #ffffff;
    box-shadow: var(--admin-shadow-sm, 0 2px 8px rgba(15, 23, 42, 0.04));
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    margin-bottom: 20px;
    overflow: hidden;
}

.dashboard-session-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--admin-shadow-md, 0 10px 25px rgba(15, 23, 42, 0.06));
}

.dashboard-session-card .card-header {
    background: #ffffff;
    border-bottom: 1px solid #f1f5f9;
    padding: 16px 20px;
}

.dashboard-session-card .card-body {
    padding: 20px;
    flex: 1 1 auto;
}

.dashboard-session-card .card-footer {
    background: #f8fafc;
    border-top: 1px solid #f1f5f9;
    padding: 14px 20px;
}

.session-subject-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--admin-text, #213047);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.session-info-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 13.5px;
}

.session-info-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.session-info-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--admin-text-muted, #64748b);
    font-size: 13px;
}

.session-info-value {
    font-weight: 600;
    color: var(--admin-text, #1e293b);
}

/* ==========================================================================
   10. Global Mobile & Touch Responsiveness (Cards, Buttons, Tables)
   ========================================================================== */

/* Touch-optimized Table Scrolling */
.table-responsive {
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 767.98px) {
    /* Responsive Cards */
    .admin-card .card-header,
    .workspace-card .card-header,
    .management-card .card-header,
    .subject-card .card-header,
    .pcoded-content .card .card-header {
        padding: 12px 14px !important;
        flex-wrap: wrap;
        gap: 8px;
    }

    .admin-card .card-body,
    .workspace-card .card-body,
    .management-card .card-body,
    .subject-card .card-body,
    .pcoded-content .card .card-body {
        padding: 14px 12px !important;
    }

    .admin-card .card-footer,
    .workspace-card .card-footer,
    .pcoded-content .card .card-footer {
        padding: 12px 14px !important;
    }

    /* Responsive Tables */
    .admin-table thead th,
    .results-table thead th,
    .table thead th {
        padding: 10px 12px !important;
        font-size: 11px !important;
    }

    .admin-table tbody td,
    .results-table tbody td,
    .table tbody td {
        padding: 10px 12px !important;
        font-size: 12.5px !important;
    }

    /* Hero Banners */
    .admin-page-hero,
    .workspace-hero,
    .management-hero,
    .seo-hero,
    .room-page-hero,
    .subject-hero,
    .marketing-hero {
        padding: 16px 14px !important;
        border-radius: var(--admin-radius-md, 12px) !important;
        margin-bottom: 16px !important;
    }

    .hero-title,
    .management-hero-title,
    .seo-hero-title,
    .room-page-title,
    .subject-hero-title,
    .marketing-hero-title {
        font-size: 20px !important;
    }

    /* Metric Cards Grid */
    .hero-metrics,
    .subject-stat-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)) !important;
        gap: 10px !important;
    }

    .metric-card,
    .hero-metric-card,
    .seo-stat-card,
    .subject-stat-card,
    .teacher-detail-card,
    .account-detail-card {
        padding: 10px 12px !important;
    }

    .metric-value,
    .hero-metric-value,
    .seo-stat-value,
    .subject-stat-value,
    .teacher-detail-value,
    .account-detail-value {
        font-size: 18px !important;
    }
}

@media (max-width: 575.98px) {
    /* Touch Buttons */
    .btn {
        min-height: 38px;
    }

    .btn-sm {
        min-height: 32px;
    }

    /* Table Toolbar */
    .table-toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .bulk-actions,
    .filter-actions {
        width: 100%;
        justify-content: stretch;
    }

    .bulk-actions .btn,
    .filter-actions .btn {
        flex: 1 1 auto;
    }
}