/**
 * FBS Activity Tracker - Modern Admin CSS
 * Custom-designed dashboard interface
 * @author Fazle Bari <fazlebarisn@gmail.com>
 * @since 1.0.0
 */

/* CSS Variables for theming */
/**
 * CSS Variables for theming
 * @author Fazle Bari <fazlebarisn@gmail.com>
 * @since 1.0.0
 */
:root {
    --fbs-at-primary: #4361ee;
    --fbs-at-primary-dark: #3f37c9;
    --fbs-at-secondary: #6c757d;
    --fbs-at-success: #2a9d8f;
    --fbs-at-warning: #e9c46a;
    --fbs-at-danger: #e63946;
    --fbs-at-info: #17a2b8;
    --fbs-at-light: #f8f9fa;
    --fbs-at-dark: #212529;
    --fbs-at-white: #ffffff;
    --fbs-at-gray-100: #f8f9fa;
    --fbs-at-gray-200: #e9ecef;
    --fbs-at-gray-300: #dee2e6;
    --fbs-at-gray-400: #ced4da;
    --fbs-at-gray-500: #adb5bd;
    --fbs-at-gray-600: #6c757d;
    --fbs-at-gray-700: #495057;
    --fbs-at-gray-800: #343a40;
    --fbs-at-gray-900: #212529;
    
    --fbs-at-border-radius: 8px;
    --fbs-at-border-radius-sm: 4px;
    --fbs-at-border-radius-lg: 12px;
    --fbs-at-box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --fbs-at-box-shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.12);
    --fbs-at-transition: all 0.3s ease;
    --fbs-at-font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* Reset and base styles for our admin page */
.fbs-at-admin-container {
    font-family: var(--fbs-at-font-family);
    line-height: 1.6;
    color: var(--fbs-at-dark);
    background: var(--fbs-at-gray-100);
    min-height: 100vh;
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

.fbs-at-admin-container *,
.fbs-at-admin-container *::before,
.fbs-at-admin-container *::after {
    box-sizing: border-box;
}

/* Header */
.fbs-at-header {
    background: var(--fbs-at-white);
    border-bottom: 1px solid var(--fbs-at-gray-200);
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--fbs-at-box-shadow);
}

.fbs-at-header-content {
    flex: 1;
}

.fbs-at-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--fbs-at-dark);
    margin: 0 0 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.fbs-at-icon {
    font-size: 1.5rem;
}

.fbs-at-subtitle {
    color: var(--fbs-at-gray-600);
    margin: 0;
    font-size: 1rem;
}

.fbs-at-header-actions {
    display: flex;
    gap: 1rem;
}

/* Buttons */
.fbs-at-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--fbs-at-border-radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--fbs-at-transition);
    white-space: nowrap;
    user-select: none;
}

.fbs-at-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.fbs-at-btn-primary {
    background: var(--fbs-at-primary);
    color: var(--fbs-at-white);
}

.fbs-at-btn-primary:hover:not(:disabled) {
    background: var(--fbs-at-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--fbs-at-box-shadow);
}

.fbs-at-btn-secondary {
    background: var(--fbs-at-gray-200);
    color: var(--fbs-at-gray-700);
}

.fbs-at-btn-secondary:hover:not(:disabled) {
    background: var(--fbs-at-gray-300);
    transform: translateY(-1px);
}

.fbs-at-btn-danger {
    background: var(--fbs-at-danger);
    color: var(--fbs-at-white);
}

.fbs-at-btn-danger:hover:not(:disabled) {
    background: #d62828;
    transform: translateY(-1px);
}

.fbs-at-btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.fbs-at-btn-icon {
    font-size: 1rem;
}

/* Statistics Grid */
.fbs-at-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
}

.fbs-at-stat-card {
    background: var(--fbs-at-white);
    border-radius: var(--fbs-at-border-radius);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--fbs-at-box-shadow);
    transition: var(--fbs-at-transition);
}

.fbs-at-stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--fbs-at-box-shadow-lg);
}

.fbs-at-stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.fbs-at-stat-icon-primary {
    background: rgba(67, 97, 238, 0.1);
    color: var(--fbs-at-primary);
}

.fbs-at-stat-icon-success {
    background: rgba(42, 157, 143, 0.1);
    color: var(--fbs-at-success);
}

.fbs-at-stat-icon-warning {
    background: rgba(233, 196, 106, 0.1);
    color: var(--fbs-at-warning);
}

.fbs-at-stat-content {
    flex: 1;
}

.fbs-at-stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--fbs-at-dark);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.fbs-at-stat-label {
    color: var(--fbs-at-gray-600);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Filters */
.fbs-at-filters {
    background: var(--fbs-at-white);
    border-radius: var(--fbs-at-border-radius);
    padding: 1.5rem;
    margin: 0 2rem 2rem 2rem;
    box-shadow: var(--fbs-at-box-shadow);
}

.fbs-at-filters-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.fbs-at-filters-row:last-child {
    margin-bottom: 0;
}

.fbs-at-filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.fbs-at-filter-group-search {
    grid-column: 1 / -1;
}

.fbs-at-filter-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--fbs-at-gray-700);
}

.fbs-at-filter-select,
.fbs-at-filter-input {
    padding: 0.75rem;
    border: 1px solid var(--fbs-at-gray-300);
    border-radius: var(--fbs-at-border-radius-sm);
    font-size: 0.875rem;
    transition: var(--fbs-at-transition);
    background: var(--fbs-at-white);
}

.fbs-at-filter-select:focus,
.fbs-at-filter-input:focus {
    outline: none;
    border-color: var(--fbs-at-primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.fbs-at-search-container {
    position: relative;
    display: flex;
}

.fbs-at-search-input {
    flex: 1;
    padding-right: 3rem;
}

.fbs-at-search-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--fbs-at-gray-500);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--fbs-at-border-radius-sm);
    transition: var(--fbs-at-transition);
}

.fbs-at-search-btn:hover {
    background: var(--fbs-at-gray-100);
    color: var(--fbs-at-primary);
}

.fbs-at-filter-actions {
    display: flex;
    gap: 0.75rem;
    align-items: end;
}

/* Bulk Actions */
.fbs-at-bulk-actions {
    background: var(--fbs-at-primary);
    color: var(--fbs-at-white);
    border-radius: var(--fbs-at-border-radius);
    padding: 1rem 1.5rem;
    margin: 0 2rem 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--fbs-at-box-shadow);
}

.fbs-at-bulk-info {
    font-weight: 500;
}

.fbs-at-bulk-buttons {
    display: flex;
    gap: 0.75rem;
}

/* Activity Container */
.fbs-at-activity-container {
    background: var(--fbs-at-white);
    border-radius: var(--fbs-at-border-radius);
    margin: 0 2rem 2rem 2rem;
    box-shadow: var(--fbs-at-box-shadow);
    overflow: hidden;
}

.fbs-at-activity-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--fbs-at-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.fbs-at-activity-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--fbs-at-dark);
    margin: 0;
}

.fbs-at-activity-controls {
    display: flex;
    align-items: center;
}

/* Checkbox */
.fbs-at-checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--fbs-at-gray-700);
}

.fbs-at-checkbox {
    width: 1rem;
    height: 1rem;
    border: 1px solid var(--fbs-at-gray-400);
    border-radius: var(--fbs-at-border-radius-sm);
    background: var(--fbs-at-white);
    cursor: pointer;
    transition: var(--fbs-at-transition);
}

.fbs-at-checkbox:checked {
    background: var(--fbs-at-primary);
    border-color: var(--fbs-at-primary);
}

.fbs-at-checkbox:checked::after {
    content: '✓';
    color: var(--fbs-at-white);
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

/* Activity Feed */
.fbs-at-activity-feed {
    max-height: 600px;
    overflow-y: auto;
}

.fbs-at-activity-item {
    padding: 1.5rem;
    border-bottom: 1px solid var(--fbs-at-gray-200);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: var(--fbs-at-transition);
}

.fbs-at-activity-item:hover {
    background: var(--fbs-at-gray-50);
}

.fbs-at-activity-item:last-child {
    border-bottom: none;
}

.fbs-at-activity-checkbox {
    margin-top: 0.25rem;
}

.fbs-at-activity-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.fbs-at-avatar-placeholder {
    background: var(--fbs-at-gray-300);
    color: var(--fbs-at-gray-600);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.fbs-at-activity-content {
    flex: 1;
    min-width: 0;
}

.fbs-at-activity-header-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.fbs-at-activity-user {
    font-weight: 600;
    color: var(--fbs-at-dark);
}

.fbs-at-activity-action {
    padding: 0.25rem 0.5rem;
    border-radius: var(--fbs-at-border-radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.fbs-at-activity-action-primary {
    background: rgba(67, 97, 238, 0.1);
    color: var(--fbs-at-primary);
}

.fbs-at-activity-action-success {
    background: rgba(42, 157, 143, 0.1);
    color: var(--fbs-at-success);
}

.fbs-at-activity-action-warning {
    background: rgba(233, 196, 106, 0.1);
    color: var(--fbs-at-warning);
}

.fbs-at-activity-action-danger {
    background: rgba(230, 57, 70, 0.1);
    color: var(--fbs-at-danger);
}

.fbs-at-activity-action-secondary {
    background: rgba(108, 117, 125, 0.1);
    color: var(--fbs-at-secondary);
}

.fbs-at-activity-details {
    color: var(--fbs-at-gray-700);
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

.fbs-at-activity-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--fbs-at-gray-500);
}

.fbs-at-activity-time {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.fbs-at-activity-ip {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Loading States */
.fbs-at-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--fbs-at-gray-600);
}

.fbs-at-spinner {
    width: 2rem;
    height: 2rem;
    border: 2px solid var(--fbs-at-gray-300);
    border-top: 2px solid var(--fbs-at-primary);
    border-radius: 50%;
    animation: fbs-at-spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes fbs-at-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.fbs-at-loading-text {
    font-size: 0.875rem;
    font-weight: 500;
}

/* No Results */
.fbs-at-no-results {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
}

.fbs-at-no-results-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.fbs-at-no-results-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--fbs-at-gray-700);
    margin: 0 0 0.5rem 0;
}

.fbs-at-no-results-text {
    color: var(--fbs-at-gray-500);
    margin: 0;
    max-width: 400px;
}

/* Load More */
.fbs-at-load-more {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--fbs-at-gray-200);
}

/* Responsive Design */
@media (max-width: 768px) {
    .fbs-at-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .fbs-at-header-actions {
        width: 100%;
        justify-content: center;
    }

    .fbs-at-stats-grid {
        grid-template-columns: 1fr;
        padding: 1rem;
    }

    .fbs-at-filters {
        margin: 0 1rem 1rem 1rem;
    }

    .fbs-at-filters-row {
        grid-template-columns: 1fr;
    }

    .fbs-at-activity-container {
        margin: 0 1rem 1rem 1rem;
    }

    .fbs-at-bulk-actions {
        margin: 0 1rem 1rem 1rem;
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .fbs-at-activity-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .fbs-at-activity-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .fbs-at-title {
        font-size: 1.5rem;
    }

    .fbs-at-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }

    .fbs-at-stat-card {
        padding: 1rem;
    }

    .fbs-at-stat-value {
        font-size: 1.5rem;
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    :root {
        --fbs-at-white: #1a1a1a;
        --fbs-at-gray-100: #2d2d2d;
        --fbs-at-gray-200: #404040;
        --fbs-at-gray-300: #525252;
        --fbs-at-gray-400: #737373;
        --fbs-at-gray-500: #a3a3a3;
        --fbs-at-gray-600: #d4d4d4;
        --fbs-at-gray-700: #e5e5e5;
        --fbs-at-gray-800: #f5f5f5;
        --fbs-at-gray-900: #ffffff;
        --fbs-at-dark: #ffffff;
    }
}

/* Accessibility */
.fbs-at-btn:focus,
.fbs-at-filter-select:focus,
.fbs-at-filter-input:focus,
.fbs-at-checkbox:focus {
    outline: 2px solid var(--fbs-at-primary);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .fbs-at-header-actions,
    .fbs-at-filters,
    .fbs-at-bulk-actions,
    .fbs-at-activity-controls,
    .fbs-at-load-more {
        display: none !important;
    }

    .fbs-at-admin-container {
        background: white !important;
    }

    .fbs-at-activity-item {
        break-inside: avoid;
        border-bottom: 1px solid #ccc !important;
    }
}