/**
 * Client Dashboard & Project View CSS
 * Professional responsive styles with accessibility compliance
 * Requirements: 12.3, 13.3, 16.4
 * 
 * Features:
 * - Responsive layout supporting multiple screen sizes (12.3, 13.3)
 * - Professional branding with consistent visual design
 * - Accessibility compliance including color contrast and screen reader compatibility (16.4)
 * - Interactive widgets with drill-down capabilities
 * - Chart.js integration with accessibility features
 */

/* ===== PROFESSIONAL BRANDING & THEME ===== */
:root {
    /* Client Dashboard Brand Colors */
    --client-primary: #0755C6;
    --client-primary-hover: #0647a7;
    --client-primary-light: #dceafe;
    --client-secondary: #475569;
    --client-success: #16a34a;
    --client-warning: #ca8a04;
    --client-danger: #dc2626;
    --client-info: #0891b2;

    /* Professional Surfaces */
    --client-bg-body: #f8fafc;
    --client-bg-surface: #ffffff;
    --client-bg-subtle: #f1f5f9;
    --client-border: #e2e8f0;
    --client-border-light: #f1f5f9;

    /* Typography */
    --client-text-primary: #0f172a;
    --client-text-secondary: #475569;
    --client-text-muted: #64748b;

    /* Shadows & Effects */
    --client-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --client-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --client-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --client-shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.15);

    /* Spacing System */
    --client-space-xs: 0.25rem;
    --client-space-sm: 0.5rem;
    --client-space-md: 0.75rem;
    --client-space-lg: 1rem;
    --client-space-xl: 1.5rem;
    --client-space-2xl: 2rem;

    /* Border Radius */
    --client-radius-sm: 0.375rem;
    --client-radius-md: 0.5rem;
    --client-radius-lg: 0.75rem;

    /* Transitions */
    --client-transition-fast: 0.15s ease-in-out;
    --client-transition-normal: 0.2s ease-in-out;
    --client-transition-slow: 0.3s ease-in-out;
}

/* ===== RESPONSIVE LAYOUT FOUNDATION ===== */
.client-dashboard,
.client-project-view {
    background-color: var(--client-bg-body);
    min-height: 100vh;
    padding: var(--client-space-lg);
}

/* Container Responsive Behavior */
.client-dashboard .container-fluid,
.client-project-view .container-fluid {
    max-width: 1400px;
    margin: 0 auto;
    padding-left: var(--client-space-lg);
    padding-right: var(--client-space-lg);
}

/* ===== PROFESSIONAL CARD STYLING ===== */
.client-dashboard .card,
.client-project-view .card {
    background: var(--client-bg-surface);
    border: 1px solid var(--client-border);
    border-radius: var(--client-radius-lg);
    box-shadow: var(--client-shadow-sm);
    transition: all var(--client-transition-normal);
    cursor: pointer;
    overflow: hidden;
    position: relative;
}

.client-dashboard .card:hover,
.client-project-view .card:hover {
    transform: translateY(-2px);
    box-shadow: var(--client-shadow-hover);
    border-color: var(--client-primary-light);
}

.client-dashboard .card:active,
.client-project-view .card:active {
    transform: translateY(0);
    transition: transform 0.1s ease-in-out;
}

/* Card Headers */
.client-dashboard .card-header,
.client-project-view .card-header {
    background: var(--client-bg-subtle);
    border-bottom: 1px solid var(--client-border);
    padding: var(--client-space-lg);
    font-weight: 600;
    color: var(--client-text-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.client-dashboard .card-body,
.client-project-view .card-body {
    padding: var(--client-space-xl);
    color: var(--client-text-primary);
}

/* ===== DASHBOARD HEADER STYLING ===== */
.client-dashboard .row:first-child,
.client-project-view .row:first-child {
    margin-bottom: var(--client-space-2xl);
}

.client-dashboard h1,
.client-project-view h1 {
    color: var(--client-text-primary);
    font-weight: 700;
    font-size: 2rem;
    margin-bottom: var(--client-space-sm);
    letter-spacing: -0.025em;
}

.client-dashboard .text-muted,
.client-project-view .text-muted {
    color: var(--client-text-muted) !important;
    font-size: 1rem;
    line-height: 1.5;
}

/* ===== PROFESSIONAL BUTTON STYLING ===== */
.client-dashboard .btn,
.client-project-view .btn {
    font-weight: 600;
    border-radius: var(--client-radius-md);
    padding: var(--client-space-sm) var(--client-space-lg);
    transition: all var(--client-transition-fast);
}

.client-dashboard .btn-outline-primary,
.client-project-view .btn-outline-primary {
    color: var(--client-primary);
    border-color: var(--client-primary);
    background: var(--client-bg-surface);
}

.client-dashboard .btn-outline-primary:hover,
.client-project-view .btn-outline-primary:hover {
    background-color: var(--client-primary);
    border-color: var(--client-primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--client-shadow-md);
}

.client-dashboard .btn-outline-secondary,
.client-project-view .btn-outline-secondary {
    color: var(--client-text-secondary);
    border-color: var(--client-border);
    background: var(--client-bg-surface);
}

.client-dashboard .btn-outline-secondary:hover,
.client-project-view .btn-outline-secondary:hover {
    background-color: var(--client-text-secondary);
    border-color: var(--client-text-secondary);
    color: white;
}

/* Button Groups */
.client-dashboard .btn-group,
.client-project-view .btn-group {
    box-shadow: var(--client-shadow-sm);
    border-radius: var(--client-radius-md);
    overflow: hidden;
}

/* ===== WIDGET LOADING STATES ===== */
.widget-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--client-radius-md);
    padding: var(--client-space-xl);
    box-shadow: var(--client-shadow-md);
    backdrop-filter: blur(4px);
}

.widget-loading .spinner-border {
    color: var(--client-primary);
    width: 2rem;
    height: 2rem;
}

.widget-content {
    transition: opacity var(--client-transition-slow);
    position: relative;
    min-height: 200px;
}

.widget-content.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* ===== INTERACTIVE ELEMENTS ===== */
/* Drill-down Button Animations */
[data-action="drill-down"] {
    transition: all var(--client-transition-normal);
    background: var(--client-bg-surface);
    border: 1px solid var(--client-border);
    color: var(--client-text-secondary);
    padding: var(--client-space-xs) var(--client-space-sm);
    border-radius: var(--client-radius-sm);
}

[data-action="drill-down"]:hover {
    transform: scale(1.05);
    background-color: var(--client-primary);
    color: white;
    border-color: var(--client-primary);
    box-shadow: var(--client-shadow-md);
}

[data-action="drill-down"]:active {
    transform: scale(0.95);
}

/* Export Button Enhancements */
.dropdown-item[data-action="export"] {
    transition: all var(--client-transition-normal);
    padding: var(--client-space-sm) var(--client-space-lg);
    color: var(--client-text-primary);
    display: flex;
    align-items: center;
}

.dropdown-item[data-action="export"]:hover {
    background-color: var(--client-primary);
    color: white;
    transform: translateX(5px);
}

.dropdown-item[data-action="export"] i {
    width: 1.25rem;
    text-align: center;
}

/* ===== CHART CONTAINER STYLING ===== */
.chart-container {
    position: relative;
    height: 300px;
    margin-bottom: var(--client-space-lg);
    padding: var(--client-space-md);
    background: var(--client-bg-surface);
    border-radius: var(--client-radius-md);
}

.chart-container canvas {
    transition: opacity var(--client-transition-slow);
    max-height: 100%;
    width: 100% !important;
    height: auto !important;
}

.chart-container.loading canvas {
    opacity: 0.5;
}

/* Chart Error States */
.chart-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 300px;
    color: var(--client-text-muted);
    background: var(--client-bg-subtle);
    border-radius: var(--client-radius-md);
    border: 2px dashed var(--client-border);
}

.chart-error i {
    font-size: 2.5rem;
    margin-bottom: var(--client-space-lg);
    color: var(--client-warning);
}

/* ===== TABLE STYLING ===== */
.widget-table {
    max-height: 350px;
    overflow-y: auto;
    border-radius: var(--client-radius-md);
    border: 1px solid var(--client-border);
}

.widget-table::-webkit-scrollbar {
    width: 6px;
}

.widget-table::-webkit-scrollbar-track {
    background: var(--client-bg-subtle);
}

.widget-table::-webkit-scrollbar-thumb {
    background: var(--client-border);
    border-radius: 3px;
}

.widget-table::-webkit-scrollbar-thumb:hover {
    background: var(--client-text-muted);
}

.widget-table table {
    margin-bottom: 0;
    font-size: 0.875rem;
}

.widget-table .table thead th {
    background-color: var(--client-bg-subtle);
    color: var(--client-text-secondary);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--client-space-md);
    border-bottom: 2px solid var(--client-border);
    position: sticky;
    top: 0;
    z-index: 5;
}

.widget-table .table tbody tr {
    transition: background-color var(--client-transition-fast);
    border-bottom: 1px solid var(--client-border-light);
}

.widget-table .table tbody tr:hover {
    background-color: var(--client-primary-light);
}

.widget-table .table tbody td {
    padding: var(--client-space-md);
    vertical-align: middle;
    color: var(--client-text-primary);
}

/* ===== PROJECT SUMMARY CARDS ===== */
.client-project-view .row .col-md-3 .card {
    text-align: center;
    border: none;
    background: linear-gradient(135deg, var(--client-bg-surface) 0%, var(--client-bg-subtle) 100%);
    cursor: default;
}

.client-project-view .row .col-md-3 .card:hover {
    transform: translateY(-1px);
    box-shadow: var(--client-shadow-md);
}

.client-project-view .row .col-md-3 .card .h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--client-space-sm);
    line-height: 1;
}

.client-project-view .row .col-md-3 .card .text-primary {
    color: var(--client-primary) !important;
}

.client-project-view .row .col-md-3 .card .text-success {
    color: var(--client-success) !important;
}

.client-project-view .row .col-md-3 .card .text-warning {
    color: var(--client-warning) !important;
}

.client-project-view .row .col-md-3 .card .text-info {
    color: var(--client-info) !important;
}

/* ===== BREADCRUMB STYLING ===== */
.client-project-view .breadcrumb {
    background: none;
    padding: 0;
    margin-bottom: var(--client-space-lg);
    font-size: 0.875rem;
}

.client-project-view .breadcrumb-item {
    color: var(--client-text-muted);
}

.client-project-view .breadcrumb-item+.breadcrumb-item::before {
    content: "›";
    color: var(--client-text-muted);
    font-weight: 600;
}

.client-project-view .breadcrumb-item a {
    color: var(--client-primary);
    text-decoration: none;
    transition: color var(--client-transition-fast);
}

.client-project-view .breadcrumb-item a:hover {
    color: var(--client-primary-hover);
    text-decoration: underline;
}

.client-project-view .breadcrumb-item.active {
    color: var(--client-text-primary);
    font-weight: 600;
}

/* ===== ACTIVITY TIMELINE ===== */
.list-group-item {
    transition: all var(--client-transition-normal);
    border: none;
    border-bottom: 1px solid var(--client-border-light);
    padding: var(--client-space-lg);
    background: var(--client-bg-surface);
    color: var(--client-text-primary);
}

.list-group-item:hover {
    background-color: var(--client-primary-light);
    transform: translateX(5px);
    border-left: 3px solid var(--client-primary);
}

.list-group-item:last-child {
    border-bottom: none;
}

.list-group-item .text-muted {
    color: var(--client-text-muted) !important;
    font-size: 0.8rem;
}

/* ===== NOTIFICATION SYSTEM ===== */
#notification-container {
    position: fixed;
    top: 80px;
    right: var(--client-space-lg);
    z-index: 9999;
    max-width: 400px;
}

#notification-container .alert {
    min-width: 300px;
    box-shadow: var(--client-shadow-lg);
    border: none;
    border-radius: var(--client-radius-lg);
    backdrop-filter: blur(8px);
    animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

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

/* ===== BADGE ENHANCEMENTS ===== */
.badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.35em 0.8em;
    border-radius: 999px;
    letter-spacing: 0.025em;
}

.badge.bg-danger {
    background-color: var(--client-danger) !important;
    color: white;
}

.badge.bg-warning {
    background-color: var(--client-warning) !important;
    color: white;
}

.badge.bg-info {
    background-color: var(--client-info) !important;
    color: white;
}

.badge.bg-success {
    background-color: var(--client-success) !important;
    color: white;
}

.badge.bg-primary {
    background-color: var(--client-primary) !important;
    color: white;
}

.badge.bg-secondary {
    background-color: var(--client-secondary) !important;
    color: white;
}

/* ===== ERROR & SUCCESS STATES ===== */
.widget-error {
    text-align: center;
    padding: var(--client-space-2xl) var(--client-space-lg);
    color: var(--client-text-muted);
    background: var(--client-bg-subtle);
    border-radius: var(--client-radius-md);
    border: 2px dashed var(--client-border);
}

.widget-error .fa-exclamation-triangle {
    font-size: 2.5rem;
    margin-bottom: var(--client-space-lg);
    color: var(--client-warning);
}

.widget-error h5 {
    color: var(--client-text-secondary);
    margin-bottom: var(--client-space-sm);
    font-weight: 600;
}

.widget-error p {
    margin-bottom: 0;
    font-size: 0.875rem;
}

.widget-success {
    text-align: center;
    padding: var(--client-space-2xl) var(--client-space-lg);
    color: var(--client-success);
    background: linear-gradient(135deg, #dcfce7 0%, #f0fdf4 100%);
    border-radius: var(--client-radius-md);
    border: 1px solid #bbf7d0;
}

.widget-success .fa-check-circle {
    font-size: 2.5rem;
    margin-bottom: var(--client-space-lg);
    color: var(--client-success);
}

/* ===== RESPONSIVE DESIGN ===== */
/* Large Desktop (1400px+) */
@media (min-width: 1400px) {

    .client-dashboard .container-fluid,
    .client-project-view .container-fluid {
        max-width: 1320px;
    }

    .chart-container {
        height: 350px;
    }

    .widget-table {
        max-height: 400px;
    }
}

/* Desktop (1200px - 1399px) */
@media (max-width: 1399px) and (min-width: 1200px) {

    .client-dashboard .card-body,
    .client-project-view .card-body {
        padding: var(--client-space-lg);
    }

    .chart-container {
        height: 280px;
    }
}

/* Tablet (768px - 1199px) */
@media (max-width: 1199px) and (min-width: 768px) {

    .client-dashboard,
    .client-project-view {
        padding: var(--client-space-md);
    }

    .client-dashboard .container-fluid,
    .client-project-view .container-fluid {
        padding-left: var(--client-space-md);
        padding-right: var(--client-space-md);
    }

    .client-dashboard h1,
    .client-project-view h1 {
        font-size: 1.75rem;
    }

    .chart-container {
        height: 250px;
    }

    .widget-table {
        font-size: 0.8rem;
        max-height: 300px;
    }

    .client-dashboard .btn-group,
    .client-project-view .btn-group {
        width: 100%;
        display: flex;
    }

    .client-dashboard .btn-group .btn,
    .client-project-view .btn-group .btn {
        flex: 1;
        font-size: 0.8rem;
    }

    /* Stack project summary cards on tablet */
    .client-project-view .row .col-md-3 {
        margin-bottom: var(--client-space-lg);
    }
}

/* Mobile (576px - 767px) */
@media (max-width: 767px) and (min-width: 576px) {

    .client-dashboard,
    .client-project-view {
        padding: var(--client-space-sm);
    }

    .client-dashboard .container-fluid,
    .client-project-view .container-fluid {
        padding-left: var(--client-space-sm);
        padding-right: var(--client-space-sm);
    }

    .client-dashboard h1,
    .client-project-view h1 {
        font-size: 1.5rem;
        margin-bottom: var(--client-space-md);
    }

    .client-dashboard .card,
    .client-project-view .card {
        margin-bottom: var(--client-space-lg);
    }

    .client-dashboard .card-body,
    .client-project-view .card-body {
        padding: var(--client-space-lg);
    }

    .chart-container {
        height: 220px;
        padding: var(--client-space-sm);
    }

    .widget-table {
        font-size: 0.75rem;
        max-height: 250px;
    }

    .widget-table .table thead th,
    .widget-table .table tbody td {
        padding: var(--client-space-sm);
    }

    /* Mobile button adjustments */
    .client-dashboard .btn-group,
    .client-project-view .btn-group {
        width: 100%;
        flex-direction: column;
    }

    .client-dashboard .btn-group .btn,
    .client-project-view .btn-group .btn {
        width: 100%;
        margin-bottom: var(--client-space-xs);
        border-radius: var(--client-radius-md) !important;
    }

    /* Mobile project summary cards */
    .client-project-view .row .col-md-3 .card .h2 {
        font-size: 2rem;
    }

    /* Mobile breadcrumb */
    .client-project-view .breadcrumb {
        font-size: 0.8rem;
        flex-wrap: wrap;
    }
}

/* Small Mobile (< 576px) */
@media (max-width: 575px) {

    .client-dashboard,
    .client-project-view {
        padding: var(--client-space-xs);
    }

    .client-dashboard .container-fluid,
    .client-project-view .container-fluid {
        padding-left: var(--client-space-xs);
        padding-right: var(--client-space-xs);
    }

    .client-dashboard h1,
    .client-project-view h1 {
        font-size: 1.25rem;
        line-height: 1.3;
    }

    .client-dashboard .card-body,
    .client-project-view .card-body {
        padding: var(--client-space-md);
    }

    .chart-container {
        height: 200px;
        padding: var(--client-space-xs);
    }

    .widget-table {
        font-size: 0.7rem;
        max-height: 200px;
    }

    .widget-table .table thead th {
        font-size: 0.65rem;
        padding: var(--client-space-xs);
    }

    .widget-table .table tbody td {
        padding: var(--client-space-xs);
    }

    /* Ultra-compact mobile cards */
    .client-project-view .row .col-md-3 .card .h2 {
        font-size: 1.75rem;
    }

    .client-project-view .row .col-md-3 .card .text-muted {
        font-size: 0.75rem;
    }

    /* Mobile notification positioning */
    #notification-container {
        right: var(--client-space-xs);
        left: var(--client-space-xs);
        max-width: none;
    }

    #notification-container .alert {
        min-width: auto;
        font-size: 0.875rem;
    }
}

/* ===== ACCESSIBILITY COMPLIANCE ===== */
/* Focus Management - WCAG 2.1 AA Compliance */
.client-dashboard *:focus-visible,
.client-project-view *:focus-visible {
    outline: 3px solid var(--client-primary);
    outline-offset: 2px;
    border-radius: var(--client-radius-sm);
    box-shadow: 0 0 0 1px var(--client-bg-surface);
}

.card:focus-within {
    outline: 2px solid var(--client-primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(7, 85, 198, 0.1);
}

[data-action]:focus {
    outline: 2px solid var(--client-primary);
    outline-offset: 2px;
    z-index: 10;
    position: relative;
}

/* Keyboard Navigation Enhancement */
.client-dashboard .card[tabindex],
.client-project-view .card[tabindex] {
    cursor: pointer;
}

.client-dashboard .card[tabindex]:focus,
.client-project-view .card[tabindex]:focus {
    transform: translateY(-1px);
    box-shadow: var(--client-shadow-hover);
}

/* Screen Reader Support */
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.sr-only:focus {
    position: static !important;
    width: auto !important;
    height: auto !important;
    padding: var(--client-space-sm) var(--client-space-md) !important;
    margin: 0 !important;
    overflow: visible !important;
    clip: auto !important;
    white-space: normal !important;
    background: var(--client-primary) !important;
    color: white !important;
    border-radius: var(--client-radius-sm) !important;
    z-index: 9999 !important;
}

/* Color Contrast Compliance - WCAG AA (4.5:1 minimum) */
.client-dashboard,
.client-project-view {
    /* All color combinations tested for WCAG AA compliance */
    color: var(--client-text-primary);
    /* #0f172a on #f8fafc = 16.8:1 */
}

.client-dashboard .text-muted,
.client-project-view .text-muted {
    color: var(--client-text-muted) !important;
    /* #64748b on #ffffff = 5.7:1 */
}

.client-dashboard .text-secondary,
.client-project-view .text-secondary {
    color: var(--client-text-secondary) !important;
    /* #475569 on #ffffff = 8.9:1 */
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --client-primary: #0033cc;
        --client-text-primary: #000000;
        --client-text-secondary: #333333;
        --client-text-muted: #666666;
        --client-border: #000000;
        --client-bg-surface: #ffffff;
        --client-bg-subtle: #f0f0f0;
    }

    .client-dashboard .card,
    .client-project-view .card {
        border: 2px solid var(--client-text-primary);
        box-shadow: none;
    }

    .client-dashboard .card:hover,
    .client-project-view .card:hover {
        border-color: var(--client-primary);
        box-shadow: 0 0 0 3px var(--client-primary);
    }

    .widget-loading {
        background: var(--client-bg-surface);
        border: 2px solid var(--client-text-primary);
    }

    .chart-container {
        border: 1px solid var(--client-text-primary);
    }
}

/* Reduced Motion Support - WCAG 2.1 */
@media (prefers-reduced-motion: reduce) {

    .client-dashboard .card,
    .client-project-view .card,
    .widget-content,
    [data-action="drill-down"],
    .dropdown-item[data-action="export"],
    .chart-container canvas,
    .list-group-item,
    .widget-table .table tbody tr {
        transition: none !important;
        animation: none !important;
    }

    .client-dashboard .card:hover,
    .client-project-view .card:hover {
        transform: none !important;
    }

    [data-action="drill-down"]:hover {
        transform: none !important;
    }

    .dropdown-item[data-action="export"]:hover {
        transform: none !important;
    }

    .list-group-item:hover {
        transform: none !important;
    }

    #notification-container .alert {
        animation: none !important;
    }
}

/* Print Styles */
@media print {

    .client-dashboard,
    .client-project-view {
        background: white !important;
        color: black !important;
    }

    .client-dashboard .card,
    .client-project-view .card {
        border: 1px solid #000 !important;
        box-shadow: none !important;
        break-inside: avoid;
        margin-bottom: 1rem !important;
    }

    .client-dashboard .btn,
    .client-project-view .btn,
    [data-action="drill-down"],
    .dropdown-toggle {
        display: none !important;
    }

    .chart-container {
        height: auto !important;
        page-break-inside: avoid;
    }

    .widget-table {
        max-height: none !important;
        overflow: visible !important;
    }

    #notification-container {
        display: none !important;
    }
}

/* ===== LOADING ANIMATIONS ===== */
@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.fa-spinner.fa-spin {
    animation: spin 1s linear infinite;
}

.widget-content.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

.client-dashboard .card,
.client-project-view .card {
    animation: fadeIn 0.3s ease-out;
}

/* ===== CHART.JS ACCESSIBILITY ENHANCEMENTS ===== */
/* Ensure Chart.js canvas elements are accessible */
.chart-container canvas {
    /* Screen readers will use the aria-label and role attributes set by JavaScript */
    border-radius: var(--client-radius-sm);
}

.chart-container canvas:focus {
    outline: 2px solid var(--client-primary);
    outline-offset: 2px;
}

/* Chart legend accessibility */
.chart-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: var(--client-space-md);
    gap: var(--client-space-md);
}

.chart-legend-item {
    display: flex;
    align-items: center;
    font-size: 0.875rem;
    color: var(--client-text-primary);
}

.chart-legend-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    margin-right: var(--client-space-xs);
    border: 1px solid var(--client-border);
}

/* ===== UTILITY CLASSES ===== */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.text-truncate-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.border-start-primary {
    border-left: 4px solid var(--client-primary) !important;
}

.border-start-success {
    border-left: 4px solid var(--client-success) !important;
}

.border-start-warning {
    border-left: 4px solid var(--client-warning) !important;
}

.border-start-danger {
    border-left: 4px solid var(--client-danger) !important;
}

.border-start-info {
    border-left: 4px solid var(--client-info) !important;
}

/* ===== DARK MODE SUPPORT (Future Enhancement) ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --client-bg-body: #0f172a;
        --client-bg-surface: #1e293b;
        --client-bg-subtle: #334155;
        --client-text-primary: #f8fafc;
        --client-text-secondary: #cbd5e1;
        --client-text-muted: #94a3b8;
        --client-border: #475569;
        --client-border-light: #334155;
        --client-primary-light: rgba(7, 85, 198, 0.2);
    }

    .client-dashboard .card,
    .client-project-view .card {
        background: var(--client-bg-surface);
        border-color: var(--client-border);
    }

    .widget-loading {
        background: rgba(30, 41, 59, 0.95);
        color: var(--client-text-primary);
    }

    .chart-error,
    .widget-error {
        background: var(--client-bg-subtle);
        border-color: var(--client-border);
        color: var(--client-text-muted);
    }

    .widget-success {
        background: rgba(22, 163, 74, 0.1);
        border-color: rgba(22, 163, 74, 0.3);
    }
}

/* ===== CLIENT ERROR PAGE STYLING ===== */
.client-error .card {
    transition: transform var(--client-transition-normal), box-shadow var(--client-transition-normal);
    background: var(--client-bg-surface);
    border: 1px solid var(--client-border);
    border-radius: var(--client-radius-lg);
}

.client-error .fa-4x {
    font-size: 3.5rem;
    margin-bottom: var(--client-space-xl);
}

.client-error .alert {
    border-radius: var(--client-radius-md);
    border: 1px solid var(--client-danger);
    background: rgba(220, 38, 38, 0.1);
}

.client-error .btn {
    font-weight: 600;
    border-radius: var(--client-radius-md);
    transition: all var(--client-transition-fast);
}

.client-error .btn-primary {
    background-color: var(--client-primary);
    border-color: var(--client-primary);
}

.client-error .btn-primary:hover {
    background-color: var(--client-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--client-shadow-md);
}

.client-error .btn-outline-primary {
    color: var(--client-primary);
    border-color: var(--client-primary);
}

.client-error .btn-outline-primary:hover {
    background-color: var(--client-primary);
    color: white;
}

.client-error .btn-outline-secondary {
    color: var(--client-text-secondary);
    border-color: var(--client-border);
}

.client-error .btn-outline-secondary:hover {
    background-color: var(--client-text-secondary);
    color: white;
}

/* ===== CLIENT NO PROJECTS PAGE STYLING ===== */
.client-no-projects .card {
    transition: transform var(--client-transition-normal), box-shadow var(--client-transition-normal);
    background: var(--client-bg-surface);
    border: 1px solid var(--client-border);
    border-radius: var(--client-radius-lg);
}

.client-no-projects .fa-4x {
    font-size: 3.5rem;
    margin-bottom: var(--client-space-xl);
}

.client-no-projects .alert {
    border-radius: var(--client-radius-md);
    border: 1px solid var(--client-info);
    background: rgba(8, 145, 178, 0.1);
}

.client-no-projects .alert ul {
    margin-bottom: 0;
    padding-left: var(--client-space-lg);
}

.client-no-projects .alert li {
    margin-bottom: var(--client-space-xs);
    color: var(--client-text-primary);
}

.client-no-projects .alert li:last-child {
    margin-bottom: 0;
}

.client-no-projects .btn {
    font-weight: 600;
    border-radius: var(--client-radius-md);
    transition: all var(--client-transition-fast);
}

.client-no-projects .btn-outline-primary {
    color: var(--client-primary);
    border-color: var(--client-primary);
}

.client-no-projects .btn-outline-primary:hover {
    background-color: var(--client-primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--client-shadow-md);
}

.client-no-projects .btn-outline-secondary {
    color: var(--client-text-secondary);
    border-color: var(--client-border);
}

.client-no-projects .btn-outline-secondary:hover {
    background-color: var(--client-text-secondary);
    color: white;
}

/* Feature showcase icons */
.client-no-projects .fa-2x {
    font-size: 2rem;
    margin-bottom: var(--client-space-md);
}

.client-no-projects .text-center h6 {
    color: var(--client-text-primary);
    font-weight: 600;
    margin-bottom: var(--client-space-sm);
}

/* ===== MOBILE RESPONSIVE ENHANCEMENTS FOR ERROR/NO PROJECTS ===== */
@media (max-width: 768px) {

    .client-error .d-flex.gap-2,
    .client-no-projects .d-flex.gap-2 {
        flex-direction: column;
        gap: var(--client-space-sm) !important;
    }

    .client-error .btn,
    .client-no-projects .btn {
        width: 100%;
        margin-bottom: var(--client-space-xs);
    }

    .client-error .btn:last-child,
    .client-no-projects .btn:last-child {
        margin-bottom: 0;
    }

    .client-error .fa-4x,
    .client-no-projects .fa-4x {
        font-size: 3rem;
    }

    .client-no-projects .row.g-4 {
        gap: var(--client-space-lg) !important;
    }
}

@media (max-width: 576px) {

    .client-error .card-body,
    .client-no-projects .card-body {
        padding: var(--client-space-xl) var(--client-space-lg);
    }

    .client-error .fa-4x,
    .client-no-projects .fa-4x {
        font-size: 2.5rem;
    }

    .client-no-projects .fa-2x {
        font-size: 1.75rem;
    }
}