/**
 * ILGC Report Styles
 * Modern, clean design with CSS custom properties
 */

/* ============================================================================
   CSS Custom Properties (Design Tokens)
   ============================================================================ */

:root {
    /* Colors */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-secondary: #64748b;
    --color-success: #16a34a;
    --color-success-bg: #dcfce7;
    --color-warning: #ca8a04;
    --color-warning-bg: #fef9c3;
    --color-danger: #dc2626;
    --color-danger-bg: #fee2e2;
    
    /* Status Colors */
    --status-on-time-bg: #dcfce7;
    --status-on-time-text: #166534;
    --status-delayed-bg: #fef08a;
    --status-delayed-text: #854d0e;
    --status-critical-bg: #fecaca;
    --status-critical-text: #991b1b;
    
    /* Neutrals */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
}

/* ============================================================================
   Base Styles
   ============================================================================ */

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-800);
    background-color: var(--color-gray-50);
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--space-4);
    font-weight: 600;
    line-height: 1.25;
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

/* ============================================================================
   Layout
   ============================================================================ */

.app-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--space-6);
}

.page-header {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-6);
    align-items: start;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-gray-200);
}

.header-left {
    /* Calendar container */
}

.header-center {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: var(--space-2);
}

.header-right {
    text-align: right;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.header-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    margin-top: -30px;
}

.header-branding {
    text-align: right;
}

.header-branding h1 {
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
    font-size: var(--font-size-xl);
}

.header-branding h2 {
    color: var(--color-gray-600);
    font-size: var(--font-size-base);
    font-weight: 500;
}

.main-nav {
    margin-top: var(--space-4);
}

.main-nav a {
    font-weight: 500;
}

.main-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
}

.report-container {
    flex: 1;
    min-width: 0;
    overflow-x: auto;
}

.report-container.comparison {
    border-left: 3px solid var(--color-primary);
    padding-left: var(--space-4);
}

.history-container {
    margin-top: var(--space-4);
    padding: var(--space-4);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.history-container:empty {
    display: none;
}

.page-footer {
    margin-top: var(--space-8);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-gray-200);
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

/* ============================================================================
   Calendar Widget
   ============================================================================ */

.calendar-widget {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    box-shadow: var(--shadow-sm);
    max-width: 320px;
}

/* Calendar Navigation - Add/replace these styles */

.calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.calendar-title-group {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex: 1;
    justify-content: center;
}

.calendar-title {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-gray-800);
    white-space: nowrap;
}

.calendar-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-gray-100);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    color: var(--color-gray-600);
    text-decoration: none;
    font-size: 12px;
    transition: all 0.15s ease;
}

.calendar-nav-btn:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-800);
    border-color: var(--color-gray-400);
}

.calendar-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--color-gray-500);
    font-size: 10px;
}

.calendar-toggle:hover {
    color: var(--color-gray-700);
}

/* Remove old calendar-nav if it exists */
.calendar-nav {
    display: none;
}

.calendar-table {
    width: 100%;
    border-collapse: collapse;
    text-align: center;
}

.calendar-table-week {
    /* Slightly larger cells for week view */
}

.calendar-table th {
    padding: var(--space-2);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-gray-500);
    text-transform: uppercase;
}

.calendar-table td {
    padding: var(--space-2);
    border: 1px solid var(--color-gray-200);
    font-size: var(--font-size-sm);
}

.calendar-table td.empty {
    background: var(--color-gray-50);
}

.calendar-table td.has-event {
    background: var(--color-warning-bg);
    font-weight: 600;
}

.calendar-table td.has-event a {
    display: block;
    color: var(--color-gray-800);
}

.calendar-table td.has-event:hover {
    background: #fde047;
}

.calendar-table td.is-today {
    border: 2px solid var(--color-primary);
    font-weight: 700;
}

.calendar-table td.is-today.has-event {
    background: linear-gradient(135deg, var(--color-warning-bg) 0%, #bfdbfe 100%);
}

/* ============================================================================
   Forms
   ============================================================================ */

.work-order-form {
    padding: var(--space-3) var(--space-4);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.work-order-form .form-inline {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3);
}

.work-order-form .view-type-selector {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    border: none;
    padding: 0;
    margin: 0;
}

.work-order-form .view-type-selector legend {
    display: none; /* Hide legend in compact mode */
}

.work-order-form .form-group {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--space-2);
}

.work-order-form .form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-600);
    white-space: nowrap;
}

.work-order-form .comparison-form {
    margin-top: var(--space-2);
    padding-top: var(--space-2);
    border-top: 1px solid var(--color-gray-200);
}

.form-inline {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--space-4);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-input,
.form-select,
.form-textarea {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background: var(--color-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.view-type-selector {
    border: none;
    padding: 0;
    margin: 0;
}

.view-type-selector legend {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
}

/* Compact mode for header */
.header-center .view-type-selector {
    display: flex;
    gap: var(--space-1);
}

.header-center .view-type-selector legend {
    display: none;
}

.header-center .radio-label {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-xs);
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.header-center .radio-label:has(input:checked) {
    background: var(--color-primary);
    color: white;
}

.header-center .radio-label input {
    display: none;
}

.radio-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    margin-right: var(--space-4);
    font-size: var(--font-size-sm);
    cursor: pointer;
}

.comparison-form {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-gray-200);
}

/* BOM Edit Form */
.bom-edit-form {
    max-width: 600px;
    background: var(--color-white);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-table {
    width: 100%;
}

.form-table td {
    padding: var(--space-2) var(--space-3);
}

.form-table .label-cell {
    text-align: right;
    font-weight: 500;
    color: var(--color-gray-700);
    width: 40%;
}

.form-table .value-cell {
    width: 60%;
}

.form-table .form-input,
.form-table .form-textarea {
    width: 100%;
}

/* ============================================================================
   Buttons
   ============================================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
}

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

.btn-secondary:hover {
    background: var(--color-gray-300);
}

.btn-download {
    background: var(--color-success);
    color: var(--color-white);
    text-decoration: none;
}

.btn-download:hover {
    background: #15803d;
    color: var(--color-white);
    text-decoration: none;
}

/* ============================================================================
   Report Table
   ============================================================================ */

.report-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.report-title {
    margin: 0;
    font-size: var(--font-size-xl);
}

.report-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.report-table thead {
    background: var(--color-gray-800);
    color: var(--color-white);
}

.report-table th {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
}

.report-table td {
    padding: var(--space-2) var(--space-4);
    border-bottom: 1px solid var(--color-gray-200);
    vertical-align: middle;
}

.report-table tbody tr:hover {
    background: var(--color-gray-50);
}

.report-table .numeric {
    text-align: right;
    font-family: var(--font-family-mono);
}

/* Status Row Colors */
.report-table tr.status-on-time .status-cell {
    background: var(--status-on-time-bg);
    color: var(--status-on-time-text);
    font-weight: 600;
}

.report-table tr.status-delayed .status-cell {
    background: var(--status-delayed-bg);
    color: var(--status-delayed-text);
    font-weight: 600;
}

.report-table tr.status-critical .status-cell {
    background: var(--status-critical-bg);
    color: var(--status-critical-text);
    font-weight: 600;
}

/* External View Table */
.report-table.external-view thead {
    background: var(--color-gray-900);
}

/* ============================================================================
   History Display
   ============================================================================ */

.history-container h2 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-4);
}

.history-container table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.history-container th,
.history-container td {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-gray-300);
    text-align: left;
}

.history-container th {
    background: var(--color-gray-100);
    font-weight: 600;
}

/* ============================================================================
   Messages
   ============================================================================ */

.flash-message {
    padding: var(--space-3) var(--space-4);
    margin-bottom: var(--space-4);
    background: var(--color-success-bg);
    color: var(--color-success);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-success);
}

.flash-message a {
    color: var(--color-success);
    font-weight: 500;
    margin-left: var(--space-2);
}

.info-message {
    padding: var(--space-6);
    text-align: center;
    color: var(--color-gray-500);
    font-size: var(--font-size-lg);
}

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

@media (max-width: 768px) {
    .app-container {
        padding: var(--space-4);
    }
    
    .page-header {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .header-right {
        order: 1;
        justify-content: center;
    }
    
    .header-branding {
        text-align: center;
    }
    
    .header-left {
        order: 2;
    }
    
    .header-center {
        order: 3;
        justify-content: center;
    }
    
    .work-order-form {
        width: 100%;
    }
    
    .work-order-form .form-inline {
        flex-direction: column;
        align-items: stretch;
    }
    
    .work-order-form .view-type-selector {
        justify-content: center;
    }
    
    .work-order-form .form-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .work-order-form .form-group label {
        text-align: center;
    }
    
    .form-inline {
        flex-direction: column;
        align-items: stretch;
    }
    
    .radio-label {
        display: flex;
        margin-right: 0;
        margin-bottom: var(--space-2);
    }
    
    .report-table {
        font-size: var(--font-size-xs);
    }
    
    .report-table th,
    .report-table td {
        padding: var(--space-1) var(--space-2);
    }
    
    .main-nav {
        text-align: center;
    }
}

/* ============================================================================
   Print Styles
   ============================================================================ */

@media print {
    .calendar-widget,
    .work-order-form,
    .main-nav,
    .page-footer,
    .btn-download {
        display: none;
    }
    
    .report-table {
        box-shadow: none;
    }
    
    .report-table th,
    .report-table td {
        border: 1px solid #000;
    }
}

/* ============================================================================
   Summary Report Styles
   ============================================================================ */

.summary-report {
    width: 100%;
}

.summary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.summary-header h2 {
    margin: 0;
}

.summary-actions {
    display: flex;
    gap: var(--space-2);
}

.summary-stats {
    display: flex;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.summary-stats .stat {
    padding: var(--space-2) var(--space-4);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.summary-stats .stat strong {
    font-size: var(--font-size-lg);
    margin-right: var(--space-1);
}

.summary-stats .stat-good {
    background: var(--status-on-time-bg);
    color: var(--status-on-time-text);
}

.summary-stats .stat-warning {
    background: var(--status-delayed-bg);
    color: var(--status-delayed-text);
}

.summary-stats .stat-critical {
    background: var(--status-critical-bg);
    color: var(--status-critical-text);
}

.summary-table .status-cell {
    text-align: center;
}

.percentage-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.status-on-time .percentage-badge {
    background: var(--status-on-time-bg);
    color: var(--status-on-time-text);
}

.status-delayed .percentage-badge {
    background: var(--status-delayed-bg);
    color: var(--status-delayed-text);
}

.status-critical .percentage-badge {
    background: var(--status-critical-bg);
    color: var(--status-critical-text);
}

.summary-table .actions {
    white-space: nowrap;
}

.btn-sm {
    padding: var(--space-1) var(--space-2);
    font-size: var(--font-size-xs);
    background: var(--color-gray-200);
    color: var(--color-gray-700);
    border-radius: var(--radius-sm);
    text-decoration: none;
    margin-right: var(--space-1);
}

.btn-sm:hover {
    background: var(--color-gray-300);
    text-decoration: none;
}

/* ============================================================================
   Cache Indicator & Clear Cache Button
   ============================================================================ */

.cache-badge {
    display: inline-block;
    padding: 2px 8px;
    margin-left: var(--space-2);
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-md);
    vertical-align: middle;
}

.btn-clear-cache {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
}

.btn-clear-cache:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-800);
    text-decoration: none;
}

.report-actions {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

/* ============================================================================
   Sortable Table Headers
   ============================================================================ */

.sortable-header {
    user-select: none;
    position: relative;
    white-space: nowrap;
}

.sortable-header:hover {
    background: var(--color-gray-700);
}

.sortable-header.sorted {
    background: var(--color-gray-700);
}

.sort-indicator {
    font-size: var(--font-size-xs);
    margin-left: var(--space-1);
    opacity: 0.9;
}

/* Ensure clicks on header work even with links in cells below */
.report-table thead th {
    position: relative;
    z-index: 1;
}

/* Hover hint for sortable columns */
.sortable-header::after {
    content: '⇅';
    position: absolute;
    right: var(--space-2);
    opacity: 0;
    transition: opacity var(--transition-fast);
    font-size: var(--font-size-xs);
}

.sortable-header:hover::after {
    opacity: 0.5;
}

.sortable-header.sorted::after {
    display: none;
}

/* ============================================================================
   Batch Download Controls
   ============================================================================ */

.batch-select-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.batch-select-controls .filter-controls {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.batch-select-controls .download-controls {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
    margin-left: auto;
}

.filter-inline {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
}

.filter-inline span {
    font-weight: 500;
}

.filter-input-sm {
    padding: 4px 8px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    width: 130px;
}

.filter-select-sm {
    padding: 4px 8px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    min-width: 150px;
    max-width: 250px;
}

.checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-700);
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.checkbox-label:hover {
    color: var(--color-gray-900);
}

/* Report checkbox labels in table cells */
.report-checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    margin-right: var(--space-1);
}

.report-checkbox-label input[type="checkbox"] {
    width: 14px;
    height: 14px;
    cursor: pointer;
    accent-color: var(--color-primary);
    margin: 0;
}

.report-checkbox-label .btn-sm {
    margin-left: 2px;
}

/* Highlight row when checkbox is checked */
.report-checkbox:checked {
    outline: 2px solid var(--color-primary);
    outline-offset: 1px;
}

tr:has(.report-checkbox:checked) {
    background-color: rgba(37, 99, 235, 0.05) !important;
}

/* Selection stat in summary stats */
.selection-stat {
    background: var(--color-primary) !important;
    color: var(--color-white) !important;
}

/* Actions header */
.actions-header {
    min-width: 180px;
}

/* Download Selected button states */
#downloadSelectedBtn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#downloadSelectedBtn:not(:disabled) {
    background: var(--color-primary);
    animation: subtle-pulse 2s ease-in-out infinite;
}

@keyframes subtle-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4); }
    50% { box-shadow: 0 0 0 4px rgba(37, 99, 235, 0); }
}

/* ============================================================================
   Slide-Out History Panel
   ============================================================================ */

/* Custom properties for history panel theming */
:root {
    --history-current-bg: #fef08a;
    --history-po-bg: #86efac;
    --history-default-bg: #ffffff;
    --history-panel-width: 480px;
}

/* Backdrop - covers entire screen, clickable to close */
.history-panel-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 9998;
    cursor: pointer;
}

.history-panel-backdrop.visible {
    opacity: 1;
    visibility: visible;
}

/* Panel Container - fixed height, internal scroll */
.history-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--history-panel-width);
    max-width: 90vw;
    height: 100vh;
    height: 100dvh; /* Dynamic viewport height for mobile browsers */
    background: var(--color-white);
    box-shadow: -4px 0 25px rgba(0, 0, 0, 0.2);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 9999;
    display: flex;
    flex-direction: column;
}

.history-panel.open {
    transform: translateX(0);
}

/* Panel Header - stays fixed at top */
.history-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-5);
    background: var(--color-gray-800);
    color: var(--color-white);
    flex-shrink: 0;
    border-bottom: 1px solid var(--color-gray-700);
}

.history-panel-title {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.history-panel-close {
    background: transparent;
    border: none;
    color: var(--color-white);
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.history-panel-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.history-panel-close:focus {
    outline: 2px solid var(--color-white);
    outline-offset: 2px;
}

/* Panel Content - scrollable area that fills remaining height */
.history-panel-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--space-5);
    /* Ensure it takes remaining space and scrolls */
    min-height: 0;
}

/* Product Info */
.history-product-info {
    margin-bottom: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

/* History Table */
.history-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-4);
}

.history-table th {
    background: var(--color-gray-100);
    padding: var(--space-2) var(--space-3);
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--color-gray-300);
    position: sticky;
    top: 0;
}

.history-table td {
    padding: var(--space-2) var(--space-3);
    border-bottom: 1px solid var(--color-gray-200);
    vertical-align: middle;
}

.history-table .numeric {
    text-align: right;
    font-family: var(--font-family-mono);
}

.history-table .initial-row {
    background: var(--color-gray-50);
    font-style: italic;
    color: var(--color-gray-600);
}

/* Quantity styling */
.history-table .positive {
    color: var(--color-success);
    font-weight: 600;
}

.history-table .negative {
    color: var(--color-danger);
    font-weight: 600;
}

.history-table .negative-stock {
    color: var(--color-danger);
    font-weight: 700;
    background: rgba(220, 38, 38, 0.1);
}

/* Order type badges */
.order-badge {
    display: inline-block;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    margin-left: var(--space-2);
    vertical-align: middle;
}

.order-badge-current {
    background: #fbbf24;
    color: #78350f;
}

.order-badge-po {
    background: #22c55e;
    color: #14532d;
}

/* Legend */
.history-legend {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-3);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.legend-swatch {
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-gray-300);
}

.legend-current {
    background: var(--history-current-bg);
}

.legend-po {
    background: var(--history-po-bg);
}

/* Mobile adjustments for panel */
@media (max-width: 500px) {
    .history-panel {
        width: 100vw;
        max-width: 100vw;
    }
    
    .history-legend {
        flex-direction: column;
        gap: var(--space-2);
    }
}

/* ============================================================================
   Kit Indicator Styles
   ============================================================================ */

.kit-badge {
    display: inline-block;
    font-size: 0.875em;
    cursor: help;
}

.kit-calculated {
    background: #dbeafe;
    font-weight: 600;
}

.kit-calculated::after {
    content: '';
}

/* Tooltip for kit on-hand */
td[title]:not([title=""]):hover {
    position: relative;
}