/**
 * Unified Design Theme
 * YTI Management System - Consistent UI/UX Framework
 * Version: 2.0.0
 * Date: October 5, 2025
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ============================================
   COLOR PALETTE & VARIABLES
   ============================================ */
:root {
    /* Primary Colors */
    --primary-color: #0066cc;
    --primary-dark: #004d99;
    --primary-light: #3385d6;
    --primary-lighter: #e6f2ff;

    /* Secondary Colors */
    --secondary-color: #6c757d;
    --secondary-dark: #545b62;
    --secondary-light: #adb5bd;

    /* Status Colors */
    --success-color: #28a745;
    --success-light: #d4edda;
    --danger-color: #dc3545;
    --danger-light: #f8d7da;
    --warning-color: #ffc107;
    --warning-light: #fff3cd;
    --info-color: #17a2b8;
    --info-light: #d1ecf1;

    /* Neutral Colors */
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;

    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #212529;

    /* Text Colors */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;

    /* Border & Shadow */
    --border-color: #e2e8f0;
    --border-radius: 12px;
    --border-radius-sm: 6px;
    --border-radius-lg: 16px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-base: 0.9375rem;
    --font-size-sm: 0.8125rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --line-height-base: 1.6;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    /* Primary Colors */
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --primary-lighter: #1e3a8a;

    /* Background Colors */
    --bg-primary: #1f2937;
    --bg-secondary: #111827;
    --bg-dark: #000000;

    /* Text Colors */
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;

    /* Border & Shadow */
    --border-color: #374151;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);

    /* Status Colors - Adjusted for Dark Mode */
    --success-color: #10b981;
    --success-light: #064e3b;
    --danger-color: #ef4444;
    --danger-light: #7f1d1d;
    --warning-color: #f59e0b;
    --warning-light: #78350f;
    --info-color: #3b82f6;
    --info-light: #1e3a8a;

    /* Neutrals */
    --gray-100: #374151;
    --gray-200: #4b5563;
    --gray-300: #6b7280;
    --gray-400: #9ca3af;
    --gray-500: #d1d5db;
    --gray-600: #e5e7eb;
    --gray-700: #f3f4f6;
    --gray-800: #f9fafb;
    --gray-900: #ffffff;
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */
/* Mobile First Approach */
/* xs: < 576px */
/* sm: >= 576px */
/* md: >= 768px */
/* lg: >= 992px */
/* xl: >= 1200px */
/* xxl: >= 1400px */

/* ============================================
   GLOBAL RESET & BASE STYLES
   ============================================ */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    margin: 0;
    padding: 0;
}

/* ============================================
   PAGE LAYOUT
   ============================================ */
.page-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.page-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-xl);
}

.page-content {
    flex: 1;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .page-content {
        padding: 0 var(--spacing-lg);
    }
}

/* ============================================
   CARD COMPONENTS
   ============================================ */
.card-unified {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
    transition: box-shadow var(--transition-base);
}

.card-unified:hover {
    box-shadow: var(--shadow-md);
}

.card-unified-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.card-unified-title {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.card-unified-body {
    padding: var(--spacing-lg);
}

.card-unified-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

/* ============================================
   STATISTICS CARDS
   ============================================ */
.stats-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 576px) {
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .stats-container {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    border-left: 4px solid var(--primary-color);
}

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

.stat-card.stat-primary {
    border-left-color: var(--primary-color);
}

.stat-card.stat-success {
    border-left-color: var(--success-color);
}

.stat-card.stat-danger {
    border-left-color: var(--danger-color);
}

.stat-card.stat-warning {
    border-left-color: var(--warning-color);
}

.stat-card.stat-info {
    border-left-color: var(--info-color);
}

.stat-card-icon {
    font-size: 2rem;
    opacity: 0.3;
    float: right;
}

.stat-card-value {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    line-height: 1;
}

.stat-card-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: var(--spacing-sm);
}

/* ============================================
   PAGE HEADER COMPONENT
   ============================================ */
.page-header-unified {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.page-title-icon {
    margin-right: var(--spacing-sm);
    color: var(--primary-color);
}

.page-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

@media (max-width: 575px) {
    .page-header-unified {
        flex-direction: column;
        align-items: stretch;
    }

    .page-actions {
        width: 100%;
    }

    .page-actions .btn {
        flex: 1;
    }
}

/* ============================================
   BUTTON SYSTEM
   ============================================ */
.btn-unified {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-unified:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-unified:active {
    transform: translateY(0);
}

.btn-unified.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.btn-unified.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* ============================================
   TABLE STYLES
   ============================================ */
.table-unified {
    width: 100%;
    margin-bottom: var(--spacing-lg);
    background: var(--bg-primary);
    border-collapse: separate;
    border-spacing: 0;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table-unified thead {
    background: var(--bg-secondary);
}

.table-unified thead th {
    font-weight: 600;
    color: var(--text-primary);
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 2px solid var(--border-color);
}

.table-unified tbody tr {
    transition: background-color var(--transition-fast);
}

.table-unified tbody tr:hover {
    background: var(--bg-secondary);
}

.table-unified tbody td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.table-unified tbody tr:last-child td {
    border-bottom: none;
}

/* Responsive Table */
.table-responsive-unified {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 767px) {
    .table-unified {
        font-size: var(--font-size-sm);
    }

    .table-unified thead {
        display: none;
    }

    .table-unified tbody tr {
        display: block;
        margin-bottom: var(--spacing-lg);
        border: 1px solid var(--border-color);
        border-radius: var(--border-radius);
    }

    .table-unified tbody td {
        display: flex;
        justify-content: space-between;
        padding: var(--spacing-sm) var(--spacing-md);
        border-bottom: 1px solid var(--border-color);
    }

    .table-unified tbody td:last-child {
        border-bottom: none;
    }

    .table-unified tbody td::before {
        content: attr(data-label);
        font-weight: 600;
        margin-right: var(--spacing-md);
    }
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
.form-group-unified {
    margin-bottom: var(--spacing-lg);
}

.form-label-unified {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-control-unified {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control-unified:focus {
    outline: 0;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-control-unified.is-invalid {
    border-color: var(--danger-color);
}

.form-control-unified.is-valid {
    border-color: var(--success-color);
}

.form-text-unified {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.invalid-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--danger-color);
}

/* ============================================
   BADGES & LABELS
   ============================================ */
.badge-unified {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1;
    color: #fff;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: var(--border-radius-sm);
}

.badge-unified.badge-primary {
    background-color: var(--primary-color);
}

.badge-unified.badge-success {
    background-color: var(--success-color);
}

.badge-unified.badge-danger {
    background-color: var(--danger-color);
}

.badge-unified.badge-warning {
    background-color: var(--warning-color);
    color: var(--text-primary);
}

.badge-unified.badge-info {
    background-color: var(--info-color);
}

.badge-unified.badge-secondary {
    background-color: var(--secondary-color);
}

/* ============================================
   ALERTS & NOTIFICATIONS
   ============================================ */
.alert-unified {
    position: relative;
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.alert-unified-icon {
    margin-right: var(--spacing-sm);
    font-size: var(--font-size-lg);
}

.alert-unified.alert-success {
    color: #155724;
    background-color: var(--success-light);
    border-color: #c3e6cb;
    border-left-color: var(--success-color);
}

.alert-unified.alert-danger {
    color: #721c24;
    background-color: var(--danger-light);
    border-color: #f5c6cb;
    border-left-color: var(--danger-color);
}

.alert-unified.alert-warning {
    color: #856404;
    background-color: var(--warning-light);
    border-color: #ffeeba;
    border-left-color: var(--warning-color);
}

.alert-unified.alert-info {
    color: #0c5460;
    background-color: var(--info-light);
    border-color: #bee5eb;
    border-left-color: var(--info-color);
}

/* ============================================
   BREADCRUMB
   ============================================ */
.breadcrumb-unified {
    display: flex;
    flex-wrap: wrap;
    padding: var(--spacing-sm) 0;
    margin-bottom: var(--spacing-lg);
    list-style: none;
}

.breadcrumb-unified-item {
    display: flex;
    align-items: center;
}

.breadcrumb-unified-item+.breadcrumb-unified-item::before {
    content: "/";
    padding: 0 var(--spacing-sm);
    color: var(--text-muted);
}

.breadcrumb-unified-item.active {
    color: var(--text-secondary);
}

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

.breadcrumb-unified-item a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ============================================
   LOADING STATES
   ============================================ */
.loading-spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-left-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.skeleton {
    background: linear-gradient(90deg,
            var(--gray-200) 25%,
            var(--gray-300) 50%,
            var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
    border-radius: var(--border-radius-sm);
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* ============================================
   MODAL OVERLAYS
   ============================================ */
.modal-unified-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1040;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-unified {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1050;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

@media (max-width: 575px) {
    .modal-unified {
        width: 95%;
        max-height: 95vh;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

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

.d-none {
    display: none;
}

.d-block {
    display: block;
}

.d-inline {
    display: inline;
}

.d-inline-block {
    display: inline-block;
}

/* ============================================
   Bootstrap Dark Mode Overrides
   ============================================ */
[data-theme="dark"] body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .bg-white {
    background-color: var(--bg-secondary) !important;
}

[data-theme="dark"] .bg-light {
    background-color: var(--bg-primary) !important;
}

[data-theme="dark"] .text-dark {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .border {
    border-color: var(--border-color) !important;
}

/* Cards */
[data-theme="dark"] .card {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .card-header {
    background-color: rgba(0, 0, 0, 0.2);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .card-footer {
    background-color: rgba(0, 0, 0, 0.2);
    border-top-color: var(--border-color);
}

/* Modals */
[data-theme="dark"] .modal-content {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .modal-header {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .modal-footer {
    border-top-color: var(--border-color);
}

[data-theme="dark"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Dropdowns */
[data-theme="dark"] .dropdown-menu {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .dropdown-item:focus {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-divider {
    border-top-color: var(--border-color);
}

/* Forms */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background-color: var(--bg-primary);
    border-color: var(--primary-light);
    color: var(--text-primary);
}

[data-theme="dark"] .form-control::placeholder {
    color: var(--text-muted);
}

[data-theme="dark"] .input-group-text {
    background-color: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Tables */
[data-theme="dark"] .table {
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .table> :not(caption)>*>* {
    background-color: transparent;
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .table-striped>tbody>tr:nth-of-type(odd)>* {
    background-color: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .table-hover>tbody>tr:hover>* {
    background-color: rgba(255, 255, 255, 0.075);
}

/* Navbar */
[data-theme="dark"] .navbar-light .navbar-nav .nav-link {
    color: var(--text-secondary);
}

[data-theme="dark"] .navbar-light .navbar-nav .nav-link:hover,
[data-theme="dark"] .navbar-light .navbar-nav .nav-link.active {
    color: var(--text-primary);
}

[data-theme="dark"] .navbar-light .navbar-brand {
    color: var(--text-primary);
}

[data-theme="dark"] .navbar-light .navbar-toggler-icon {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Pagination */
[data-theme="dark"] .page-link {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .page-item.disabled .page-link {
    background-color: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-muted);
}

[data-theme="dark"] .page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

/* List Groups */
[data-theme="dark"] .list-group-item {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .list-group-item-action:hover,
[data-theme="dark"] .list-group-item-action:focus {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.d-flex {
    display: flex;
}

.justify-content-start {
    justify-content: flex-start;
}

.justify-content-end {
    justify-content: flex-end;
}

.justify-content-center {
    justify-content: center;
}

.justify-content-between {
    justify-content: space-between;
}

.align-items-start {
    align-items: flex-start;
}

.align-items-end {
    align-items: flex-end;
}

.align-items-center {
    align-items: center;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

.mt-4 {
    margin-top: var(--spacing-xl);
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    margin-bottom: var(--spacing-lg);
}

.mb-4 {
    margin-bottom: var(--spacing-xl);
}

.p-0 {
    padding: 0;
}

.p-1 {
    padding: var(--spacing-sm);
}

.p-2 {
    padding: var(--spacing-md);
}

.p-3 {
    padding: var(--spacing-lg);
}

.p-4 {
    padding: var(--spacing-xl);
}

.shadow-sm {
    box-shadow: var(--shadow-sm);
}

.shadow-md {
    box-shadow: var(--shadow-md);
}

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 575px) {
    .d-sm-none {
        display: none !important;
    }
}

@media (min-width: 576px) {
    .d-sm-block {
        display: block !important;
    }
}

@media (max-width: 767px) {
    .d-md-none {
        display: none !important;
    }
}

@media (min-width: 768px) {
    .d-md-block {
        display: block !important;
    }
}

@media (max-width: 991px) {
    .d-lg-none {
        display: none !important;
    }
}

@media (min-width: 992px) {
    .d-lg-block {
        display: block !important;
    }
}

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

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .no-print {
        display: none !important;
    }

    .page-content {
        padding: 0;
    }

    .card-unified {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
}

/* ============================================
   Bootstrap Dark Mode Overrides
   ============================================ */
[data-theme="dark"] body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .bg-white {
    background-color: var(--bg-secondary) !important;
}

[data-theme="dark"] .bg-light {
    background-color: var(--bg-primary) !important;
}

[data-theme="dark"] .text-dark {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .border {
    border-color: var(--border-color) !important;
}

/* Cards */
[data-theme="dark"] .card {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .card-header {
    background-color: rgba(0, 0, 0, 0.2);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .card-footer {
    background-color: rgba(0, 0, 0, 0.2);
    border-top-color: var(--border-color);
}

/* Modals */
[data-theme="dark"] .modal-content {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .modal-header {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .modal-footer {
    border-top-color: var(--border-color);
}

[data-theme="dark"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Dropdowns */
[data-theme="dark"] .dropdown-menu {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .dropdown-item:focus {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-divider {
    border-top-color: var(--border-color);
}

/* Forms */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background-color: var(--bg-primary);
    border-color: var(--primary-light);
    color: var(--text-primary);
}

[data-theme="dark"] .form-control::placeholder {
    color: var(--text-muted);
}

[data-theme="dark"] .input-group-text {
    background-color: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Tables */
[data-theme="dark"] .table {
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .table> :not(caption)>*>* {
    background-color: transparent;
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .table-striped>tbody>tr:nth-of-type(odd)>* {
    background-color: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .table-hover>tbody>tr:hover>* {
    background-color: rgba(255, 255, 255, 0.075);
}

/* Navbar */
[data-theme="dark"] .navbar-light .navbar-nav .nav-link {
    color: var(--text-secondary);
}

[data-theme="dark"] .navbar-light .navbar-nav .nav-link:hover,
[data-theme="dark"] .navbar-light .navbar-nav .nav-link.active {
    color: var(--text-primary);
}

[data-theme="dark"] .navbar-light .navbar-brand {
    color: var(--text-primary);
}

[data-theme="dark"] .navbar-light .navbar-toggler-icon {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Pagination */
[data-theme="dark"] .page-link {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .page-item.disabled .page-link {
    background-color: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-muted);
}

[data-theme="dark"] .page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

/* List Groups */
[data-theme="dark"] .list-group-item {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .list-group-item-action:hover,
[data-theme="dark"] .list-group-item-action:focus {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}