:root {
    --primary-color: #3b82f6;
    --secondary-color: #6366f1;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --background-color: #f8fafc;
    --card-background: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 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);
    --border-radius: 0.5rem;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* Login Page Styling */
#login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    background-color: var(--card-background);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-card h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.login-card .form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.login-card label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.login-card input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: var(--card-background);
    transition: all 0.2s ease;
}

.login-card input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

#login-btn {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

#login-btn:hover {
    background-color: #2563eb;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

#login-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.spinner {
    display: none;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    margin-left: 0.5rem;
}

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

.error-message {
    color: var(--danger-color);
    margin-top: 1rem;
    font-size: 0.875rem;
    display: none;
    padding: 0.75rem;
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--border-radius);
}

.error-message p {
    margin-bottom: 0.5rem;
}

.error-message button {
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.error-message button:hover {
    background-color: #2563eb;
}

/* Admin Panel Layout */
#admin-panel {
    display: none;
    flex-direction: column;
    min-height: 100vh;
}

/* Header Styles */
.header {
    background-color: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    padding: 0 1.5rem;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-color);
}

.logo i {
    font-size: 1.5rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    font-weight: 500;
}

.user-info i {
    font-size: 1.25rem;
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--danger-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.logout-btn:hover {
    background-color: #dc2626;
    transform: translateY(-1px);
}

/* Main Container */
.main-container {
    display: flex;
    margin-top: 70px;
    min-height: calc(100vh - 70px);
}

/* Sidebar Styles */
#sidebar {
    width: 280px;
    background-color: var(--card-background);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: calc(100vh - 70px);
    top: 70px;
    left: 0;
    overflow-y: auto;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    z-index: 99;
}

.sidebar-header {
    padding: 1.5rem 1.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
}

.sidebar-nav {
    padding: 1rem 0;
    flex: 1;
}

.sidebar-item {
    display: flex;
    align-items: center;
    padding: 0.875rem 1.5rem;
    border-radius: 0;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-light);
    border-left: 3px solid transparent;
    margin: 0.25rem 0;
}

.sidebar-item:hover, .sidebar-item.active {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.sidebar-item i {
    margin-right: 0.875rem;
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

.sidebar-item span {
    font-size: 0.95rem;
}

/* Content Area */
#content-area {
    flex: 1;
    padding: 2rem;
    margin-left: 280px;
    transition: margin-left 0.3s ease;
    background-color: var(--background-color);
    min-height: calc(100vh - 70px);
}

/* Menu Toggle Button */
.menu-toggle {
    display: none;
    background-color: transparent;
    color: var(--text-color);
    border: none;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1.25rem;
    transition: all 0.2s ease;
}

.menu-toggle:hover {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
}

/* Common Component Styling */
.card {
    background-color: var(--card-background);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-card {
    padding: 1.5rem;
    border-radius: var(--border-radius);
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.2s ease;
    box-shadow: var(--shadow);
}

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

.stat-card .value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-card .label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.data-table th, .data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: var(--text-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.75rem;
}

.data-table tbody tr:hover {
    background-color: #f8fafc;
}

.data-table button {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-approve {
    background-color: var(--success-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-approve:hover {
    background-color: #059669;
    transform: translateY(-1px);
}

.btn-delete {
    background-color: var(--danger-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-delete:hover {
    background-color: #dc2626;
    transform: translateY(-1px);
}

.account-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.account-actions .btn-small {
    flex: 1;
    min-width: 80px;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.form-group input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge.pending {
    background-color: var(--accent-color);
}

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

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

.form-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.form-container input, .form-container textarea {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: var(--card-background);
    transition: all 0.2s ease;
}

.form-container input:focus, .form-container textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-container button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.form-container button:hover {
    background-color: #2563eb;
    transform: translateY(-1px);
}

.message-box {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background-color: var(--success-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    display: none;
    animation: slideIn 0.3s ease;
    max-width: 300px;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Responsive Design - Mobile First Approach */

/* Extra Small Devices (phones, 320px and up) */
@media (max-width: 575.98px) {
    #login-container {
        padding: 0.5rem;
    }
    
    .login-card {
        padding: 1.5rem;
        margin: 0.5rem;
        max-width: 100%;
    }
    
    .login-card h2 {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .login-card input {
        padding: 0.875rem;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    #login-btn {
        padding: 0.875rem;
        font-size: 16px;
    }
    
    #sidebar {
        width: 100%;
        max-width: 100%;
        transform: translateX(-100%);
        z-index: 1000;
    }
    
    #sidebar.open {
        transform: translateX(0);
    }
    
    #content-area {
        margin-left: 0;
        padding: 1rem;
        width: 100%;
    }
    
    .menu-toggle {
        display: block;
        top: 0.5rem;
        left: 0.5rem;
        padding: 0.5rem;
        font-size: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-card .value {
        font-size: 1.5rem;
    }
    
    .card {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .card h3 {
        font-size: 1.125rem;
    }
    
    .data-table {
        font-size: 0.875rem;
    }
    
    .data-table th, .data-table td {
        padding: 0.75rem 0.5rem;
    }
    
    .btn-approve {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .form-container input, .form-container textarea {
        padding: 0.875rem;
        font-size: 16px;
    }
    
    .form-container button {
        padding: 0.875rem 1rem;
        font-size: 16px;
    }
    
    .message-box {
        top: 1rem;
        right: 1rem;
        left: 1rem;
        max-width: none;
        font-size: 0.875rem;
    }
    
    .button-group {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .user-details {
        padding: 1rem;
    }
    
    .user-details p {
        font-size: 0.875rem;
    }
    
    .accounts-grid {
        grid-template-columns: 1fr;
    }
    
    .account-card {
        padding: 1rem;
    }
}

/* Small Devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
    .login-card {
        max-width: 450px;
    }
    
    #sidebar {
        width: 280px;
        max-width: 280px;
    }
    
    #content-area {
        margin-left: 0;
        padding: 1.5rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .data-table {
        font-size: 0.875rem;
    }
    
    .data-table th, .data-table td {
        padding: 0.875rem;
    }
    
    .message-box {
        max-width: 350px;
    }
    
    .accounts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Medium Devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
    #sidebar {
        width: 250px;
        max-width: 250px;
    }
    
    #content-area {
        margin-left: 250px;
        padding: 1.5rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }
    
    .menu-toggle {
        display: none;
    }
    
    #sidebar {
        transform: translateX(0);
    }
    
    .accounts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large Devices (desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199.98px) {
    #sidebar {
        width: 250px;
    }
    
    #content-area {
        margin-left: 250px;
        padding: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
    
    .menu-toggle {
        display: none;
    }
    
    .accounts-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Extra Large Devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    #sidebar {
        width: 280px;
    }
    
    #content-area {
        margin-left: 280px;
        padding: 2.5rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
    
    .card {
        padding: 2rem;
    }
    
    .stat-card {
        padding: 2rem;
    }
    
    .stat-card .value {
        font-size: 2.5rem;
    }
    
    .menu-toggle {
        display: none;
    }
    
    .accounts-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Ultra Wide Screens (1400px and up) */
@media (min-width: 1400px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    #content-area {
        max-width: 1400px;
        margin: 0 auto 0 280px;
    }
    
    .accounts-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Landscape Orientation for Mobile */
@media (max-width: 767.98px) and (orientation: landscape) {
    #login-container {
        padding: 0.5rem;
    }
    
    .login-card {
        padding: 1.5rem;
        max-width: 400px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .data-table {
        font-size: 0.75rem;
    }
    
    .data-table th, .data-table td {
        padding: 0.5rem;
    }
    
    .accounts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .card {
        box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    }
    
    .stat-card {
        box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    }
}

/* Print Styles */
@media print {
    #sidebar, .menu-toggle, .message-box {
        display: none !important;
    }
    
    #content-area {
        margin-left: 0 !important;
        padding: 0 !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #000 !important;
        break-inside: avoid;
    }
    
    .data-table {
        font-size: 12px !important;
    }
    
    .btn-approve {
        display: none !important;
    }
    
    .accounts-grid {
        display: block !important;
    }
    
    .account-card {
        border: 1px solid #000 !important;
        margin-bottom: 1rem !important;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --text-color: #f1f5f9;
        --text-light: #cbd5e1;
        --background-color: #0f172a;
        --card-background: #1e293b;
        --border-color: #334155;
    }
    
    body {
        background-color: var(--background-color);
        color: var(--text-color);
    }
    
    .login-card {
        background-color: var(--card-background);
        color: var(--text-color);
    }
    
    .login-card input {
        background-color: var(--card-background);
        color: var(--text-color);
        border-color: var(--border-color);
    }
    
    #sidebar {
        background-color: var(--card-background);
        border-right-color: var(--border-color);
    }
    
    .card {
        background-color: var(--card-background);
        border-color: var(--border-color);
    }
    
    .stat-card {
        background-color: var(--card-background);
        border-color: var(--border-color);
    }
    
    .data-table {
        background-color: var(--card-background);
    }
    
    .data-table th {
        background-color: #334155;
        color: var(--text-color);
    }
    
    .data-table tbody tr:hover {
        background-color: #334155;
    }
    
    .user-details {
        background-color: #334155;
        border-color: var(--border-color);
    }
    
    .form-container input, .form-container textarea {
        background-color: var(--card-background);
        color: var(--text-color);
        border-color: var(--border-color);
    }
    
    .account-card {
        background-color: #334155;
        border-color: var(--border-color);
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .sidebar-item:hover {
        transform: none;
    }
    
    .stat-card:hover {
        transform: none;
    }
    
    .btn-approve:hover {
        transform: none;
    }
    
    .form-container button:hover {
        transform: none;
    }
    
    .menu-toggle:hover {
        transform: none;
    }
    
    /* Increase touch targets */
    .sidebar-item {
        min-height: 44px;
        padding: 1rem 1.25rem;
    }
    
    .btn-approve {
        min-height: 44px;
        padding: 0.75rem 1.25rem;
    }
    
    .form-container button {
        min-height: 44px;
        padding: 1rem 1.5rem;
    }
    
    .menu-toggle {
        min-height: 44px;
        min-width: 44px;
        padding: 0.75rem;
    }
}

/* Focus Styles for Keyboard Navigation */
@media (any-hover: hover) {
    .sidebar-item:focus,
    .btn-approve:focus,
    .form-container button:focus,
    .menu-toggle:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }
    
    .login-card input:focus,
    .form-container input:focus,
    .form-container textarea:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #e2e8f0;
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

/* Button Group */
.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

/* User Details */
.user-details {
    background-color: #f8fafc;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin: 1rem 0;
    border: 1px solid var(--border-color);
}

.user-details p {
    margin-bottom: 0.75rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.user-details p:last-child {
    border-bottom: none;
}

/* Responsive Design Updates */
@media (max-width: 575.98px) {
    .header {
        padding: 0 1rem;
        height: 60px;
    }
    
    .logo span {
        display: none;
    }
    
    .user-info span {
        display: none;
    }
    
    .logout-btn span {
        display: none;
    }
    
    .main-container {
        margin-top: 60px;
    }
    
    #sidebar {
        top: 60px;
        height: calc(100vh - 60px);
        width: 100%;
        max-width: 100%;
        transform: translateX(-100%);
        z-index: 1000;
    }
    
    #sidebar.open {
        transform: translateX(0);
    }
    
    #content-area {
        margin-left: 0;
        padding: 1rem;
        width: 100%;
    }
    
    .menu-toggle {
        display: block;
    }
}

@media (min-width: 576px) and (max-width: 767.98px) {
    .header {
        height: 65px;
    }
    
    .main-container {
        margin-top: 65px;
    }
    
    #sidebar {
        top: 65px;
        height: calc(100vh - 65px);
        width: 280px;
        max-width: 280px;
        transform: translateX(-100%);
    }
    
    #sidebar.open {
        transform: translateX(0);
    }
    
    #content-area {
        margin-left: 0;
        padding: 1.5rem;
    }
    
    .menu-toggle {
        display: block;
    }
}

@media (min-width: 768px) and (max-width: 991.98px) {
    .header {
        height: 70px;
    }
    
    .main-container {
        margin-top: 70px;
    }
    
    #sidebar {
        top: 70px;
        height: calc(100vh - 70px);
        width: 250px;
        max-width: 250px;
        transform: translateX(0);
    }
    
    #content-area {
        margin-left: 250px;
        padding: 1.5rem;
    }
    
    .menu-toggle {
        display: none;
    }
}

@media (min-width: 992px) and (max-width: 1199.98px) {
    #sidebar {
        width: 250px;
    }
    
    #content-area {
        margin-left: 250px;
        padding: 2rem;
    }
    
    .menu-toggle {
        display: none;
    }
}

@media (min-width: 1200px) {
    #sidebar {
        width: 280px;
    }
    
    #content-area {
        margin-left: 280px;
        padding: 2.5rem;
    }
    
    .menu-toggle {
        display: none;
    }
}

/* Dark Mode Support for Header */
@media (prefers-color-scheme: dark) {
    .header {
        background-color: var(--card-background);
        border-bottom-color: var(--border-color);
    }
    
    .sidebar-header {
        border-bottom-color: var(--border-color);
    }
    
    .sidebar-item:hover, .sidebar-item.active {
        background-color: rgba(59, 130, 246, 0.2);
    }
    
    .menu-toggle:hover {
        background-color: rgba(59, 130, 246, 0.2);
    }
}

/* Touch Device Optimizations for Header */
@media (hover: none) and (pointer: coarse) {
    .menu-toggle {
        min-height: 44px;
        min-width: 44px;
        padding: 0.75rem;
    }
    
    .logout-btn {
        min-height: 44px;
        padding: 0.75rem 1.25rem;
    }
    
    .sidebar-item {
        min-height: 48px;
        padding: 1rem 1.5rem;
    }
}

/* Responsive Table Styles */
.table-container {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.table-responsive {
    min-width: 100%;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    min-width: 800px; /* Minimum width for desktop */
}

.data-table th, .data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.data-table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: var(--text-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.75rem;
    white-space: nowrap;
}

.data-table tbody tr:hover {
    background-color: #f8fafc;
}

.data-table button {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn-small {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.btn-small i {
    font-size: 0.875rem;
}

.btn-text {
    display: inline;
}

/* Table Status Classes */
.no-data, .error-data {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
    font-style: italic;
}

.error-data {
    color: var(--danger-color);
}

.no-action {
    color: var(--text-light);
    font-style: italic;
    font-size: 0.875rem;
}

/* Mobile Responsive Table */
@media (max-width: 767.98px) {
    .data-table {
        min-width: auto;
        display: block;
    }
    
    .data-table thead {
        display: none;
    }
    
    .data-table tbody {
        display: block;
    }
    
    .data-table tr {
        display: block;
        margin-bottom: 1rem;
        border: 1px solid var(--border-color);
        border-radius: var(--border-radius);
        background-color: var(--card-background);
        box-shadow: var(--shadow);
    }
    
    .data-table td {
        display: block;
        text-align: left;
        padding: 0.75rem 1rem;
        border-bottom: 1px solid var(--border-color);
        position: relative;
    }
    
    .data-table td:last-child {
        border-bottom: none;
    }
    
    .data-table td::before {
        content: attr(data-label) ": ";
        font-weight: 600;
        color: var(--text-light);
        text-transform: uppercase;
        font-size: 0.75rem;
        letter-spacing: 0.5px;
        display: block;
        margin-bottom: 0.25rem;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn-small {
        width: 100%;
        justify-content: center;
        padding: 0.75rem;
    }
    
    .btn-text {
        display: inline;
    }
}

/* Small Mobile Devices */
@media (max-width: 575.98px) {
    .data-table td {
        padding: 0.5rem 0.75rem;
    }
    
    .btn-small {
        padding: 0.5rem;
        font-size: 0.8rem;
    }
    
    .btn-text {
        display: none;
    }
    
    .btn-small i {
        font-size: 1rem;
    }
}

/* Tablet Responsive */
@media (min-width: 768px) and (max-width: 991.98px) {
    .data-table {
        min-width: 600px;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .btn-small {
        padding: 0.5rem;
        font-size: 0.8rem;
    }
    
    .btn-text {
        display: none;
    }
}

/* Landscape Mobile */
@media (max-width: 767.98px) and (orientation: landscape) {
    .data-table td {
        padding: 0.5rem 0.75rem;
    }
    
    .action-buttons {
        flex-direction: row;
        gap: 0.25rem;
    }
    
    .btn-small {
        padding: 0.5rem;
        font-size: 0.8rem;
    }
    
    .btn-text {
        display: none;
    }
}

/* Dark Mode Support for Tables */
@media (prefers-color-scheme: dark) {
    .data-table {
        background-color: var(--card-background);
    }
    
    .data-table th {
        background-color: #334155;
        color: var(--text-color);
    }
    
    .data-table tbody tr:hover {
        background-color: #334155;
    }
    
    .data-table td {
        border-bottom-color: var(--border-color);
    }
    
    .data-table tr {
        border-color: var(--border-color);
    }
    
    .no-data, .error-data {
        color: var(--text-light);
    }
    
    .error-data {
        color: #fca5a5;
    }
}

/* Touch Device Optimizations for Tables */
@media (hover: none) and (pointer: coarse) {
    .data-table tbody tr:hover {
        background-color: transparent;
    }
    
    .btn-small {
        min-height: 44px;
        padding: 0.75rem;
    }
    
    .action-buttons {
        gap: 0.75rem;
    }
}

/* Print Styles for Tables */
@media print {
    .data-table {
        min-width: auto;
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .data-table th {
        background-color: #f0f0f0 !important;
        color: #000 !important;
    }
    
    .action-buttons {
        display: none;
    }
    
    .data-table td::before {
        color: #000 !important;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark Mode Support for all components */
@media (prefers-color-scheme: dark) {
    :root {
        --text-color: #f1f5f9;
        --text-light: #cbd5e1;
        --background-color: #0f172a;
        --card-background: #1e293b;
        --border-color: #334155;
    }
    
    body {
        background-color: var(--background-color);
        color: var(--text-color);
    }
    
    .login-card {
        background-color: var(--card-background);
        color: var(--text-color);
    }
    
    .login-card input {
        background-color: var(--card-background);
        color: var(--text-color);
        border-color: var(--border-color);
    }
    
    #sidebar {
        background-color: var(--card-background);
        border-right-color: var(--border-color);
    }
    
    .card {
        background-color: var(--card-background);
        border-color: var(--border-color);
    }
    
    .stat-card {
        background-color: var(--card-background);
        border-color: var(--border-color);
    }
    
    .data-table {
        background-color: var(--card-background);
    }
    
    .data-table th {
        background-color: #334155;
        color: var(--text-color);
    }
    
    .data-table tbody tr:hover {
        background-color: #334155;
    }
    
    .user-details {
        background-color: #334155;
        border-color: var(--border-color);
    }
    
    .form-container input, .form-container textarea {
        background-color: var(--card-background);
        color: var(--text-color);
        border-color: var(--border-color);
    }
    
    .account-card {
        background-color: #334155;
        border-color: var(--border-color);
    }
    
    .btn-approve {
        background-color: var(--success-color);
        color: white;
    }
    
    .btn-approve:hover {
        background-color: #059669;
    }
    
    .badge.approved {
        background-color: var(--success-color);
    }
    
    .badge.pending {
        background-color: var(--accent-color);
    }
    
    .badge.rejected {
        background-color: var(--danger-color);
    }
    
    .error-data {
        color: var(--danger-color);
    }
    
    .message-box {
        background-color: var(--success-color);
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .sidebar-item:hover {
        transform: none;
    }
    
    .stat-card:hover {
        transform: none;
    }
    
    .btn-approve:hover {
        transform: none;
    }
    
    .form-container button:hover {
        transform: none;
    }
    
    .menu-toggle:hover {
        transform: none;
    }
    
    /* Increase touch targets */
    .sidebar-item {
        min-height: 44px;
        padding: 1rem 1.25rem;
    }
    
    .btn-approve {
        min-height: 44px;
        padding: 0.75rem 1.25rem;
    }
    
    .form-container button {
        min-height: 44px;
        padding: 1rem 1.5rem;
    }
    
    .menu-toggle {
        min-height: 44px;
        min-width: 44px;
        padding: 0.75rem;
    }
}

/* Focus Styles for Keyboard Navigation */
@media (any-hover: hover) {
    .sidebar-item:focus,
    .btn-approve:focus,
    .form-container button:focus,
    .menu-toggle:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }
    
    .login-card input:focus,
    .form-container input:focus,
    .form-container textarea:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #e2e8f0;
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

/* Button Group */
.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

/* User Details */
.user-details {
    background-color: #f8fafc;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin: 1rem 0;
    border: 1px solid var(--border-color);
}

.user-details p {
    margin-bottom: 0.75rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.user-details p:last-child {
    border-bottom: none;
}

/* Responsive Design Updates */
@media (max-width: 575.98px) {
    .header {
        padding: 0 1rem;
        height: 60px;
    }
    
    .logo span {
        display: none;
    }
    
    .user-info span {
        display: none;
    }
    
    .logout-btn span {
        display: none;
    }
    
    .main-container {
        margin-top: 60px;
    }
    
    #sidebar {
        top: 60px;
        height: calc(100vh - 60px);
        width: 100%;
        max-width: 100%;
        transform: translateX(-100%);
        z-index: 1000;
    }
    
    #sidebar.open {
        transform: translateX(0);
    }
    
    #content-area {
        margin-left: 0;
        padding: 1rem;
        width: 100%;
    }
    
    .menu-toggle {
        display: block;
    }
}

@media (min-width: 576px) and (max-width: 767.98px) {
    .header {
        height: 65px;
    }
    
    .main-container {
        margin-top: 65px;
    }
    
    #sidebar {
        top: 65px;
        height: calc(100vh - 65px);
        width: 280px;
        max-width: 280px;
        transform: translateX(-100%);
    }
    
    #sidebar.open {
        transform: translateX(0);
    }
    
    #content-area {
        margin-left: 0;
        padding: 1.5rem;
    }
    
    .menu-toggle {
        display: block;
    }
}

@media (min-width: 768px) and (max-width: 991.98px) {
    .header {
        height: 70px;
    }
    
    .main-container {
        margin-top: 70px;
    }
    
    #sidebar {
        top: 70px;
        height: calc(100vh - 70px);
        width: 250px;
        max-width: 250px;
        transform: translateX(0);
    }
    
    #content-area {
        margin-left: 250px;
        padding: 1.5rem;
    }
    
    .menu-toggle {
        display: none;
    }
}

@media (min-width: 992px) and (max-width: 1199.98px) {
    #sidebar {
        width: 250px;
    }
    
    #content-area {
        margin-left: 250px;
        padding: 2rem;
    }
    
    .menu-toggle {
        display: none;
    }
}

@media (min-width: 1200px) {
    #sidebar {
        width: 280px;
    }
    
    #content-area {
        margin-left: 280px;
        padding: 2.5rem;
    }
    
    .menu-toggle {
        display: none;
    }
}

/* New styles for admin account cards */
.accounts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.account-card {
    background-color: var(--card-background);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

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

.account-card p {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.account-card p strong {
    color: var(--text-color);
}

/* Dark Mode Support for new styles */
@media (prefers-color-scheme: dark) {
    .accounts-grid {
        gap: 1.5rem;
    }
    .account-card {
        background-color: #334155;
        border-color: var(--border-color);
    }
    .account-card p strong {
        color: var(--text-color);
    }
}