:root {
    /* Color variables */
    --primary-color: #4361ee;
    --primary-light: #4895ef;
    --primary-dark: #3f37c9;
    --secondary-color: #f72585;
    --success-color: #4cc9f0;
    --warning-color: #f8961e;
    --danger-color: #f94144;
    --info-color: #90e0ef;
    
    /* Neutral colors */
    --dark: #212529;
    --light: #f8f9fa;
    --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;
    
    /* Dimensions */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
    --header-height: 60px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: #f5f7fb;
    position: relative;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

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

a:hover {
    color: var(--primary-dark);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-weight: 500;
    font-family: 'Poppins', sans-serif;
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    gap: 0.5rem;
}

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

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    background-color: var(--gray-200);
    color: var(--gray-800);
}

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

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

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
}

.btn-xs {
    padding: 0.15rem 0.5rem;
    font-size: 0.75rem;
}

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

/* App layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: white;
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--gray-200);
}

.logo-container {
    height: 40px;
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
}

.sidebar-header img {
    max-height: 40px;
    max-width: 40px;
}

.sidebar-header h2 {
    font-size: 1.25rem;
    margin: 0;
    color: var(--primary-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* User profile in sidebar */
.user-profile {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 1.25rem;
}

.user-info {
    flex-grow: 1;
    overflow: hidden;
}

.user-info h3 {
    font-size: 1rem;
    margin: 0 0 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.balance {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.balance strong {
    color: var(--gray-800);
}

.deposit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.3rem 0.75rem;
    font-size: 0.75rem;
    background-color: var(--gray-200);
    color: var(--gray-700);
    border-radius: 20px;
    transition: var(--transition);
}

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

.deposit-btn i {
    margin-right: 0.25rem;
}

/* Sidebar menu */
.sidebar-menu {
    flex-grow: 1;
    padding: 1.5rem 0;
}

.sidebar-menu ul {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 0.25rem;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: var(--gray-700);
    transition: var(--transition);
    position: relative;
}

.sidebar-menu a:hover {
    background-color: var(--gray-100);
    color: var(--primary-color);
}

.sidebar-menu a.active {
    background-color: rgba(67, 97, 238, 0.1);
    color: var(--primary-color);
}

.sidebar-menu a.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: var(--primary-color);
}

.sidebar-menu a i {
    width: 20px;
    font-size: 1.125rem;
    margin-right: 1.25rem;
    text-align: center;
}

/* Sidebar footer */
.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
}

.settings-link, .logout-link {
    display: flex;
    align-items: center;
    color: var(--gray-600);
    font-size: 0.875rem;
    transition: var(--transition);
}

.settings-link:hover, .logout-link:hover {
    color: var(--primary-color);
}

.settings-link i, .logout-link i {
    margin-right: 0.5rem;
}

.logout-link {
    color: var(--danger-color);
}

.logout-link:hover {
    color: var(--danger-color);
    opacity: 0.8;
}

/* Sidebar toggle for mobile */
.sidebar-toggle {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 110;
    display: none;
}

.sidebar-toggle button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--box-shadow);
}

/* Main content */
.main-content {
    flex-grow: 1;
    margin-left: var(--sidebar-width);
    padding: 2rem;
    transition: var(--transition);
}

/* Dashboard header */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-title h1 {
    font-size: 1.75rem;
    margin-bottom: 0.25rem;
}

.page-title p {
    color: var(--gray-600);
}

.balance-display {
    background-color: white;
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.balance-display span {
    color: var(--gray-600);
}

.balance-display strong {
    font-size: 1.25rem;
    color: var(--gray-800);
}

/* Cards */
.card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.card-title {
    font-size: 1.125rem;
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-sm);
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.stat-info {
    flex-grow: 1;
}

.stat-title {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    color: var(--gray-800);
    margin-bottom: 0.25rem;
}

.stat-change {
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.stat-change.positive {
    color: #38b000;
}

.stat-change.negative {
    color: var(--danger-color);
}

.quick-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    text-align: left;
    padding: 0.75rem;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-300);
}

.table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--gray-200);
    vertical-align: middle;
}

.table-hover tr:hover {
    background-color: var(--gray-100);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 20px;
}

.bg-success {
    background-color: rgba(76, 201, 240, 0.2);
    color: var(--success-color);
}

.bg-primary {
    background-color: rgba(67, 97, 238, 0.2);
    color: var(--primary-color);
}

.bg-warning {
    background-color: rgba(248, 150, 30, 0.2);
    color: var(--warning-color);
}

.bg-info {
    background-color: rgba(144, 224, 239, 0.2);
    color: var(--info-color);
}

.bg-secondary {
    background-color: rgba(108, 117, 125, 0.2);
    color: var(--gray-600);
}

/* Utility classes */
.text-success {
    color: #38b000;
}

.text-danger {
    color: var(--danger-color);
}

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

.mt-2 {
    margin-top: 0.5rem;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -0.75rem;
}

.col-md-6 {
    width: 50%;
    padding: 0 0.75rem;
}

/* Notifications */
.notification {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
    max-width: 400px;
    width: calc(100% - 2rem);
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    animation: slideIn 0.3s ease-out forwards;
}

.notification.fade-out {
    animation: fadeOut 0.5s ease-out forwards;
}

.notification-content {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.notification-content i {
    font-size: 1.25rem;
    padding-top: 0.125rem;
}

.notification-content p {
    margin: 0;
    line-height: 1.5;
}

.notification-close {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    font-size: 0.875rem;
}

.notification.info i {
    color: var(--info-color);
}

.notification.success i {
    color: var(--success-color);
}

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

.notification.warning i {
    color: var(--warning-color);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

/* Media queries */
@media (max-width: 992px) {
    .col-md-6 {
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 240px;
    }
    
    .sidebar {
        transform: translateX(calc(-1 * var(--sidebar-width)));
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .sidebar-toggle {
        display: block;
    }
    
    body:not(.sidebar-collapsed) .sidebar {
        transform: translateX(0);
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .balance-display {
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* Collapsed sidebar */
body.sidebar-collapsed .sidebar {
    width: var(--sidebar-collapsed-width);
}

body.sidebar-collapsed .main-content {
    margin-left: var(--sidebar-collapsed-width);
}

body.sidebar-collapsed .sidebar-header h2,
body.sidebar-collapsed .user-info,
body.sidebar-collapsed .sidebar-menu a span,
body.sidebar-collapsed .sidebar-footer span {
    display: none;
}

body.sidebar-collapsed .sidebar-menu a i {
    margin-right: 0;
}

body.sidebar-collapsed .sidebar-menu a {
    justify-content: center;
}

body.sidebar-collapsed .sidebar-footer {
    justify-content: center;
    gap: 1rem;
}

body.sidebar-collapsed .user-profile {
    justify-content: center;
}

body.sidebar-collapsed .logo-container {
    margin-right: 0;
}

body.sidebar-collapsed .sidebar-header {
    justify-content: center;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out forwards;
}