:root {
    --primary-color: #6C5CE7;
    --secondary-color: #A8A4FF;
    --background-color: #F8F9FD;
    --text-color: #2D3436;
    --card-background: #FFFFFF;
    --danger-color: #FF7675;
    --success-color: #00B894;
    --border-radius: 12px;
    --transition-speed: 0.3s;
    --primary-color-rgb: 99, 102, 241;
    --danger-color-rgb: 220, 38, 38;
    --success-color-rgb: 5, 150, 105;
    --gray-color: #B0BEC5;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
}

.app-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    background-color: var(--card-background);
    padding: 2rem;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.05);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.logo-img {
    width: 2rem;
    height: 2rem;
    object-fit: contain;
}

.logo h1 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    list-style: none;
}

.nav-links li {
    margin-bottom: 1rem;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: var(--text-color);
    padding: 0.8rem 1rem;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) ease;
}

.nav-links li.active a,
.nav-links a:hover {
    background-color: var(--primary-color);
    color: white;
}

.nav-links i {
    font-size: 1.2rem;
}

/* Main Content Styles */
.main-content {
    padding: 2rem;
}

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

.search-bar {
    background-color: var(--card-background);
    padding: 0.8rem 1.5rem;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 400px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.search-bar input {
    border: none;
    outline: none;
    width: 100%;
    font-size: 0.9rem;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.notifications {
    position: relative;
    display: inline-block;
}

.notification-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background-color: var(--danger-color);
    color: white;
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: 2px solid var(--card-background);
    min-width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-badge:hover {
    transform: scale(1.1);
    background-color: #ef4444;
}

.notification-dropdown {
    position: absolute;
    top: 45px;
    right: -10px;
    width: 380px;
    background: var(--card-background);
    border: 1px solid #E1E6EF;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    padding: 0;
    overflow: hidden;
}

.notification-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.notification-dropdown::before {
    content: '';
    position: absolute;
    top: -8px;
    right: 20px;
    width: 16px;
    height: 16px;
    background: var(--card-background);
    border-left: 1px solid #E1E6EF;
    border-top: 1px solid #E1E6EF;
    transform: rotate(45deg);
}

.notification-dropdown .dropdown-header {
    font-weight: 600;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #E1E6EF;
    background: #F8FAFC;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1.1rem;
}

.notification-list {
    max-height: 400px;
    overflow-y: auto;
    padding: 0.75rem 0;
}

.notification-item {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #E1E6EF;
    cursor: pointer;
    background: var(--card-background);
    transition: all var(--transition-speed) ease;
}

.notification-item:hover {
    background: #F8FAFC;
    transform: translateX(4px);
}

.notification-item.unread {
    background: rgba(var(--primary-color-rgb), 0.05);
    border-left: 3px solid var(--primary-color);
}

.notification-item:last-child {
    border-bottom: none;
}

.notification-message {
    font-size: 1rem;
    color: var(--text-color);
    margin-bottom: 0.75rem;
    line-height: 1.5;
}

.notification-time {
    font-size: 0.9rem;
    color: #64748B;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.notification-time i {
    font-size: 0.9rem;
}

.dropdown-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid #E1E6EF;
    background: #F8FAFC;
    text-align: right;
}

#clearNotificationsBtn {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-speed) ease;
}

#clearNotificationsBtn:hover {
    background: #ef4444;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--danger-color-rgb), 0.2);
}

#clearNotificationsBtn i {
    font-size: 1rem;
}

.no-notifications {
    padding: 3rem 2rem;
    text-align: center;
    color: #64748B;
    font-size: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.no-notifications i {
    font-size: 2.5rem;
    color: #CBD5E1;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-speed) ease;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    text-transform: uppercase;
}

.avatar:hover {
    transform: scale(1.1);
}

/* Dashboard Styles */
.welcome-section {
    margin-bottom: 2rem;
}

.welcome-section h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.welcome-section p {
    color: #666;
}

/* Stats Container */
.stats-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--card-background);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-speed) ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.you-owe {
    background-color: #FFE9E9;
    color: var(--danger-color);
}

.owed-to-you {
    background-color: #E1FFF4;
    color: var(--success-color);
}

.total-balance {
    background-color: #EEE9FF;
    color: var(--primary-color);
}

.monthly-expense {
    background-color: #FFF3E0;
    color: #F57C00;
}

.stat-info h3 {
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.stat-info p {
    font-size: 1.4rem;
    font-weight: 600;
}

/* Recent Groups */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #EDF2F7;
}

.new-group-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color var(--transition-speed) ease;
}

.new-group-btn:hover {
    background-color: var(--secondary-color);
}

.groups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    min-height: 120px; /* Reduced from 200px */
}

.group-card {
    background-color: var(--card-background);
    padding: 1rem 1.5rem; /* Adjusted padding to reduce height but keep width */
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-speed) ease;
    position: relative;
}

.group-card:hover {
    transform: translateY(-5px);
}

.group-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.delete-btn {
    padding: 0.85rem;
    background: none;
    border: none;
    color: #64748B;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    opacity: 0;
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.group-card:hover .delete-btn {
    opacity: 1;
}

.delete-btn:hover {
    background: rgba(var(--danger-color-rgb), 0.1);
    color: var(--danger-color);
    transform: scale(1.1);
}

.group-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem; /* Reduced from 1rem */
}

.group-header i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.members {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.group-balance p {
    font-size: 0.9rem;
}

.owe {
    color: var(--danger-color);
    font-weight: 600;
}

.get-back {
    color: var(--success-color);
    font-weight: 600;
}

.add-group-card {
    background-color: #F0F2F5;
    border: 2px dashed #DDD;
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    padding: 1rem;
    height: 100%; /* Make it match group card height */
}

.add-group-card:hover {
    border-color: var(--primary-color);
    background-color: #F8F9FD;
}

.add-group-card i {
    font-size: 1.5rem;
    color: #666;
}

/* Recent Activities */
.activity-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.25rem;
    padding: 0.5rem;
}

.activity-item {
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid #E1E6EF;
    transition: all var(--transition-speed) ease;
    cursor: pointer;
}

.activity-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.activity-content {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1rem;
    align-items: center;
}

.activity-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #EEE9FF 0%, #F8F7FF 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.activity-icon.settlement {
    background: linear-gradient(135deg, #E1FFF4 0%, #F0FFF9 100%);
    color: var(--success-color);
}

.activity-details h4 {
    margin-bottom: 0.3rem;
}

.activity-details p {
    color: #666;
    font-size: 0.9rem;
}

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

.time {
    display: block;
    color: #666;
    font-size: 0.8rem;
    margin-bottom: 0.3rem;
}

.amount {
    color: var(--text-color);
    font-weight: 500;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.stat-card, .group-card, .activity-item {
    animation: fadeIn 0.5s ease forwards;
}

/* Auth Modal Styles */
.auth-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.auth-modal.active {
    display: flex;
}

.auth-container {
    background: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 400px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    animation: slideIn 0.3s ease;
}

.auth-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    justify-content: center;
}

.auth-header i {
    font-size: 2rem;
    color: var(--primary-color);
}

.auth-header h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.auth-tabs {
    display: flex;
    margin-bottom: 2rem;
    gap: 1rem;
}

.tab-btn {
    flex: 1;
    padding: 0.8rem;
    border: none;
    background: none;
    color: #666;
    font-size: 1rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-speed) ease;
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #666;
}

.form-group input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color var(--transition-speed) ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.auth-btn {
    width: 100%;
    padding: 1rem;
    border: none;
    background-color: var(--primary-color);
    color: white;
    font-size: 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-speed) ease;
}

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Add this to your existing styles */
.app-container {
    display: none;
}

.app-container.active {
    display: grid;
}

/* Notification styles */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    background: white;
    color: var(--text-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

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

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

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-container {
    background: var(--card-background);
    padding: 2rem;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    animation: slideIn 0.3s ease;
}

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

.group-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.group-info h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-color);
}

.group-icon {
    font-size: 2rem;
    color: var(--primary-color);
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #666;
    cursor: pointer;
    padding: 0.5rem;
    transition: all var(--transition-speed) ease;
}

.close-btn:hover {
    color: var(--text-color);
    transform: scale(1.1);
}

.group-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #F8FAFC;
    border-radius: var(--border-radius);
}

.stat {
    text-align: center;
}

.stat h3 {
    margin: 0 0 0.5rem;
    font-size: 1rem;
    color: #64748B;
}

.stat p {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
}

.expense-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.add-expense-btn,
.settle-up-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

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

.add-expense-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.settle-up-btn {
    background: #EDF2F7;
    color: var(--text-color);
}

.settle-up-btn:hover {
    background: #E2E8F0;
    transform: translateY(-2px);
}

/* Tab Styles */
.tabs {
    display: flex;
    border-bottom: 2px solid #EDF2F7;
    margin-bottom: 1.5rem;
}

.tab-btn {
    padding: 1rem 2rem;
    border: none;
    background: none;
    color: #64748B;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    position: relative;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform var(--transition-speed) ease;
}

.tab-btn.active {
    color: var(--primary-color);
}

.tab-btn.active::after {
    transform: scaleX(1);
}

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

.tab-content {
    min-height: 200px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Expenses List Styles */
.expenses-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.expense-item {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.expense-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.expense-header h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--text-color);
}

.expense-header p {
    margin: 0;
    font-weight: 600;
    color: var(--primary-color);
}

.expense-info {
    margin: 0;
    color: #64748B;
    font-size: 0.95rem;
}

.expense-date {
    margin: 0.5rem 0 0;
    color: #94A3B8;
    font-size: 0.9rem;
}

/* Balances List Styles */
.balances-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    padding: 1rem 0;
}

.balance-item {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-speed) ease;
    border: 1px solid #E1E6EF;
}

.balance-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.balance-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.member-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.member-name i {
    font-size: 1rem;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.balance-amount {
    font-size: 1.4rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.balance-amount i {
    font-size: 1.1rem;
}

.balance-status {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Enhanced balance state styles */
.balance-item.positive {
    background-color: rgba(var(--success-color-rgb), 0.05);
    border-color: rgba(var(--success-color-rgb), 0.2);
}

.balance-item.positive .member-name i {
    background-color: rgba(var(--success-color-rgb), 0.1);
    color: var(--success-color);
}

.balance-item.positive .balance-amount {
    color: var(--success-color);
}

.balance-item.negative {
    background-color: rgba(var(--danger-color-rgb), 0.05);
    border-color: rgba(var(--danger-color-rgb), 0.2);
}

.balance-item.negative .member-name i {
    background-color: rgba(var(--danger-color-rgb), 0.1);
    color: var(--danger-color);
}

.balance-item.negative .balance-amount {
    color: var(--danger-color);
}

.balance-item.neutral {
    background-color: rgba(var(--primary-color-rgb), 0.05);
    border-color: rgba(var(--primary-color-rgb), 0.2);
}

.balance-item.neutral .member-name i {
    background-color: rgba(var(--primary-color-rgb), 0.1);
    color: var(--primary-color);
}

.balance-item.neutral .balance-amount {
    color: var(--text-color);
}

.balance-status.positive {
    background-color: rgba(var(--success-color-rgb), 0.1);
    color: var(--success-color);
}

.balance-status.negative {
    background-color: rgba(var(--danger-color-rgb), 0.1);
    color: var(--danger-color);
}

.balance-status.neutral {
    background-color: rgba(var(--primary-color-rgb), 0.1);
    color: var(--primary-color);
}

/* Members List Section Styles */
.members-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #EDF2F7;
}

.members-header h3 {
    font-size: 1.1rem;
    color: var(--text-color);
    margin: 0;
}

.add-member-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.add-member-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.member-add-form {
    display: none;
    gap: 1rem;
    margin: 1rem 0;
    padding: 1.25rem;
    background: linear-gradient(to right bottom, #ffffff, #f8fafc);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(226, 232, 240, 0.8);
    transition: all var(--transition-speed) ease;
}

.member-add-form.active {
    display: flex;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.add-member-header {
    font-size: 1.1rem;
    color: #1a202c;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.add-member-header i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.add-member-form .input-group {
    display: flex;
    gap: 0.75rem;
    width: 100%;
}

.add-member-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    color: #2d3748;
    background: #ffffff;
    transition: all var(--transition-speed) ease;
}

.add-member-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.15);
}

.add-member-form input::placeholder {
    color: #a0aec0;
}

.add-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    white-space: nowrap;
}

.add-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--primary-color-rgb), 0.2);
}

.add-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(var(--primary-color-rgb), 0.15);
}

.member-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.member-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-speed) ease;
}

.member-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.member-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0;
}

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

.remove-member-btn {
    opacity: 0;
    padding: 0.6rem;
    background: rgba(var(--danger-color-rgb), 0.1);
    border: none;
    color: var(--danger-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.member-item:hover .remove-member-btn {
    opacity: 1;
}

.remove-member-btn:hover {
    background-color: var(--danger-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--danger-color-rgb), 0.2);
}

.text-muted {
    color: #64748B;
    margin-right: 0.5rem;
    font-size: 1rem;
}

.admin-badge {
    background-color: rgba(var(--primary-color-rgb), 0.1);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

/* Members List Styling */
.members-list {
    margin-top: 1rem;
}

.member-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background-color: #f8f9fa;
    border-radius: 8px;
    transition: background-color 0.2s ease;
}

.member-item:hover {
    background-color: #e9ecef;
}

.member-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.member-avatar {
    width: 32px;
    height: 32px;
    background-color: #007bff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.member-avatar i {
    color: white;
    font-size: 0.9rem;
}

.member-name {
    font-weight: 500;
    color: #212529;
}

.remove-member-btn {
    background: none;
    border: none;
    color: #dc3545;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.remove-member-btn:hover {
    background-color: #ffe3e3;
}

/* Invite Member Form Styling */
.invite-member-container {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid #dee2e6;
}

.invite-header {
    font-size: 1.1rem;
    color: #212529;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.invite-header i {
    color: #28a745;
}

.invite-member-form .input-group {
    display: flex;
    gap: 0.5rem;
}

.invite-member-form input {
    flex: 1;
    padding: 0.5rem 1rem;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 0.9rem;
}

.invite-member-form input:focus {
    outline: none;
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,.25);
}

.invite-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: #28a745;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.invite-btn:hover {
    background-color: #218838;
}

.invite-btn i {
    font-size: 0.9rem;
}

/* Balance text colors */
.your-balance {
    font-weight: 600;
    transition: color 0.3s ease;
}

.your-balance.positive {
    color: var(--success-color) !important;
}

.your-balance.negative {
    color: var(--danger-color) !important;
}

.your-balance.neutral {
    color: var(--text-color) !important;
}

/* Balance summary text colors */
.balance-summary {
    padding: 0.75rem;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.balance-summary.positive {
    color: var(--success-color);
}

.balance-summary.negative {
    color: var(--danger-color);
}

.balance-summary.neutral {
    color: var(--text-color);
}

/* Balance amount colors in all contexts */
.amount.positive, 
.balance-amount.positive,
p.positive {
    color: var(--success-color) !important;
}

.amount.negative, 
.balance-amount.negative,
p.negative {
    color: var(--danger-color) !important;
}

.amount.neutral, 
.balance-amount.neutral,
p.neutral {
    color: var(--text-color) !important;
}

/* Stats card text colors */
.stat-info p.positive {
    color: var(--success-color) !important;
}

.stat-info p.negative {
    color: var(--danger-color) !important;
}

.stat-info p.neutral {
    color: var(--text-color) !important;
}

/* Settlement Styles */
.settlements-header {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid #E1E6EF;
}

.settlements-header h3 {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.settlement-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.payments {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.payment-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    background-color: rgba(0, 0, 0, 0.03);
    border-radius: var(--border-radius);
}

.payment-item i {
    color: var(--text-color);
    opacity: 0.5;
}

.payment-item .amount {
    margin-left: auto;
    font-weight: 600;
}

.settled-message {
    margin-top: 2rem;
    text-align: center;
    padding: 2rem;
    background: rgba(var(--success-color-rgb), 0.05);
    border-radius: var(--border-radius);
    color: var(--success-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.settled-message i {
    font-size: 2rem;
}

/* Expense Summary and Balance Styles */
.expense-summary-header {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid #E1E6EF;
}

.expense-summary-header .summary-section {
    margin-bottom: 0.5rem;
}

.expense-summary-header h3 {
    color: var(--primary-color);
    margin: 0 0 1rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.expense-summary-header .summary-details {
    display: grid;
    gap: 0.5rem;
}

.total-amount, .per-person {
    font-size: 1.1rem;
    margin: 0;
}

.payment-summary {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid #E1E6EF;
}

.payment-summary h3 {
    color: var(--primary-color);
    margin: 0 0 1rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.payment-details-grid {
    display: grid;
    gap: 1rem;
}

.payment-summary-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1rem;
    background: #F8FAFC;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) ease;
}

.payment-summary-item.current-user {
    background: var(--primary-color-light);
    border: 1px solid var(--primary-color);
}

.payment-summary-item .member-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 120px;
}

.payment-summary-item .member-info i {
    color: var(--primary-color);
}

.payment-summary-item .member-name {
    font-weight: 600;
}

.payment-summary-item .payment-details {
    display: grid;
    gap: 0.5rem;
    text-align: right;
}

.payment-details .paid-amount,
.payment-details .share-amount {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

.payment-details .label {
    color: #64748B;
}

.payment-details .amount {
    font-weight: 600;
}

.balance-status {
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
}

.balance-status.positive {
    color: var(--success-color);
}

.balance-status.negative {
    color: var(--danger-color);
}

.balance-status.neutral {
    color: var(--text-color);
}

.settlement-header {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid #E1E6EF;
}

.settlement-header h3 {
    color: var(--primary-color);
    margin: 0 0 0.5rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.settlement-header p {
    margin: 0;
    color: #64748B;
}

.settlement-list {
    display: grid;
    gap: 1rem;
}

.settlement-item {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid #E1E6EF;
}

.settlement-info.user-involved {
    background: var(--primary-color-light);
    border-radius: var(--border-radius);
    padding: 1rem;
}

.settlement-details {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.from-user, .to-user {
    font-weight: 600;
}

.settlement-details .amount {
    margin-left: auto;
    font-weight: 600;
    color: var(--primary-color);
}

.settle-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: background var(--transition-speed) ease;
    width: 100%;
    margin-top: 0.5rem;
}

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

.settled-message {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid #E1E6EF;
}

.settled-message i {
    font-size: 2rem;
    color: var(--success-color);
    margin-bottom: 1rem;
}

.settled-message p {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--success-color);
}

/* Debt List Styles */
.debt-item {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid #E1E6EF;
}

.debt-info.user-involved {
    background: var(--primary-color-light);
    border-radius: var(--border-radius);
    padding: 1rem;
}

.debt-details {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.debt-details .debtor,
.debt-details .creditor {
    font-weight: 600;
}

.debt-details .owes-text {
    color: #64748B;
}

.debt-details .amount {
    margin-left: auto;
    font-weight: 600;
    color: var(--primary-color);
}

.settle-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: background var(--transition-speed) ease;
    width: 100%;
    margin-top: 0.5rem;
}

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

.settled-message {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid #E1E6EF;
}

.settled-message i {
    font-size: 2rem;
    color: var(--success-color);
    margin-bottom: 1rem;
}

.settled-message p {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--success-color);
}

/* Member Cards in Balances Section */
.member-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid #E1E6EF;
}

.member-card.current-user {
    background: var(--primary-color-light);
    border: 1px solid var(--primary-color);
}

.member-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid #E1E6EF;
}

.member-header i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.member-header .member-name {
    font-size: 1.1rem;
    font-weight: 600;
}

.member-stats {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.total-paid {
    color: #64748B;
    font-weight: 500;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #E1E6EF;
}

.payments-section {
    background: #F8FAFC;
    border-radius: var(--border-radius);
    padding: 1rem;
}

.payments-section h4 {
    font-size: 1rem;
    color: #64748B;
    margin: 0 0 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.payments-section h4 i {
    color: var(--primary-color);
}

.payment-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.payment-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    background: white;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    border: 1px solid #E1E6EF;
}

.payment-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex: 1;
}

.payment-to, .payment-from {
    color: #1E293B;
    font-weight: 500;
}

.payment-item .amount {
    font-weight: 600;
}

.payment-item .amount.positive {
    color: var(--success-color);
}

.payment-item .amount.negative {
    color: var(--danger-color);
}

.payment-item .settle-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.4rem 0.8rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.9rem;
    transition: background var(--transition-speed) ease;
}

.payment-item .settle-btn:hover {
    background: var(--primary-color-dark);
}

.settled {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--success-color);
    font-weight: 500;
}

.settled i {
    font-size: 1.1rem;
}

/* Group Icon Selector Styles */
.icon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
    margin-top: 0.5rem;
}

.icon-option {
    cursor: pointer;
}

.icon-option input[type="radio"] {
    display: none;
}

.icon-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    background: #F8FAFC;
    border: 2px solid #EDF2F7;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) ease;
}

.icon-display i {
    font-size: 1.5rem;
    color: #64748B;
    margin-bottom: 0.5rem;
}

.icon-display span {
    font-size: 0.9rem;
    color: #64748B;
}

.icon-option:hover .icon-display {
    border-color: var(--primary-color);
    background: #F0F7FF;
}

.icon-option input[type="radio"]:checked + .icon-display {
    border-color: var(--primary-color);
    background: #F0F7FF;
}

.icon-option input[type="radio"]:checked + .icon-display i,
.icon-option input[type="radio"]:checked + .icon-display span {
    color: var(--primary-color);
}

/* Submit Button Styles */
.submit-btn {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.submit-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.submit-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.submit-btn i {
    font-size: 1rem;
}

/* Expense Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #1E293B;
}

.form-group label i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.form-group select {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid #E1E6EF;
    border-radius: var(--border-radius);
    background-color: white;
    font-size: 0.95rem;
    color: #1E293B;
    appearance: none;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%234F46E5'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.8rem center;
    background-size: 1.2rem;
    padding-right: 2.5rem;
}

.form-group select:hover {
    border-color: var(--primary-color);
    background-color: #F8FAFC;
}

.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(var(--primary-color-rgb), 0.1);
}

/* Split Members Section */
.split-members {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 1rem;
    background: #F8FAFC;
    border-radius: var(--border-radius);
    border: 1px solid #E1E6EF;
    min-height: 3.5rem;
}

.split-member {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: white;
    border: 1px solid #E1E6EF;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.split-member:hover {
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.split-member.selected {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.split-member.selected i {
    color: white;
}

.split-member i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

/* Expense Form Submit Button */
#addExpenseForm .submit-btn {
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

#addExpenseForm .submit-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-1px);
}

#addExpenseForm .submit-btn:disabled {
    background: #94A3B8;
    cursor: not-allowed;
    transform: none;
}

/* Settings Section Styles */
#settings-section .section-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #E2E8F0;
}

#settings-section .section-header h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

#settings-section .section-header p {
    color: #64748B;
    font-size: 0.95rem;
}

.settings-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    padding: 1rem;
}

.settings-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: all var(--transition-speed) ease;
}

.settings-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 12px -1px rgba(0, 0, 0, 0.1), 0 4px 6px -1px rgba(0, 0, 0, 0.06);
}

.settings-card h3 {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #F1F5F9;
}

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.settings-form .form-group {
    margin-bottom: 1.5rem;
}

.settings-form label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
    color: #1E293B;
}

.settings-form label i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.settings-form input[readonly] {
    background-color: #F8FAFC;
    cursor: not-allowed;
    color: #64748B;
}

.settings-form input,
.settings-form select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid #E2E8F0;
    border-radius: var(--border-radius);
    background-color: white;
    font-size: 0.95rem;
    color: #1E293B;
    transition: all var(--transition-speed) ease;
}

.settings-form input:hover:not([readonly]),
.settings-form select:hover {
    border-color: var(--primary-color);
    background-color: #F8FAFC;
}

.settings-form input:focus:not([readonly]),
.settings-form select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1);
}

.settings-form .help-text {
    font-size: 0.85rem;
    color: #64748B;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.settings-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.875rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.95rem;
}

.settings-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--primary-color-rgb), 0.2);
}

.settings-btn.danger {
    background: var(--danger-color);
    margin-top: 1.5rem;
}

.settings-btn.danger:hover {
    background: #ef4444;
    box-shadow: 0 4px 12px rgba(var(--danger-color-rgb), 0.2);
}

.preferences-list {
    display: grid;
    gap: 1rem;
}

.preference-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: #F8FAFC;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) ease;
    border: 2px solid transparent;
}

.preference-item:hover {
    background: #F1F5F9;
    border-color: #E2E8F0;
}

.preference-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.preference-name {
    font-weight: 500;
    color: #1E293B;
    font-size: 0.95rem;
}

.preference-description {
    font-size: 0.85rem;
    color: #64748B;
}

.toggle-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.toggle-switch {
    position: relative;
    width: 3.25rem;
    height: 1.75rem;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #E2E8F0;
    transition: .4s;
    border-radius: 1.75rem;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 1.35rem;
    width: 1.35rem;
    left: 0.2rem;
    bottom: 0.2rem;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

input:checked + .toggle-slider {
    background-color: var(--primary-color);
}

input:checked + .toggle-slider:before {
    transform: translateX(1.5rem);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .settings-container {
        grid-template-columns: 1fr;
        padding: 0.5rem;
    }

    .settings-card {
        padding: 1.5rem;
    }

    .settings-form input,
    .settings-form select {
        font-size: 1rem;
        padding: 0.75rem;
    }

    .preference-item {
        padding: 0.875rem;
    }
}

/* Avatar Dropdown Styles */
.avatar-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    min-width: 180px;
    display: none;
    z-index: 1000;
}

.avatar-dropdown.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

.avatar-dropdown .dropdown-item {
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-color);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.avatar-dropdown .dropdown-item:hover {
    background: rgba(var(--primary-color-rgb), 0.1);
    color: var(--primary-color);
}

.avatar-dropdown .dropdown-item i {
    font-size: 1rem;
    width: 20px;
}

.avatar-dropdown .dropdown-divider {
    height: 1px;
    background: #E2E8F0;
    margin: 0.5rem 0;
}

/* Responsive Design */
@media screen and (max-width: 1024px) {
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .activity-list {
        grid-template-columns: 1fr;
    }

    .search-bar {
        width: 300px;
    }
}

@media screen and (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        z-index: 1000;
        width: 250px;
    }

    .sidebar.active {
        display: block;
    }

    .main-content {
        padding: 1rem;
    }

    header {
        position: sticky;
        top: 0;
        background: var(--background-color);
        z-index: 100;
        padding: 1rem;
        margin: -1rem -1rem 1rem -1rem;
    }

    .search-bar {
        display: none;
    }

    .modal-container {
        width: 95%;
        margin: 1rem;
        max-height: 85vh;
    }

    .group-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .expense-controls {
        flex-direction: column;
    }

    .balances-list {
        grid-template-columns: 1fr;
    }

    .groups-grid {
        grid-template-columns: 1fr;
    }

    .member-card {
        width: 100%;
    }

    .stats-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .payment-summary-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .payment-info {
        flex-direction: column;
        width: 100%;
    }

    .split-members {
        flex-direction: column;
        align-items: stretch;
    }

    .split-member {
        width: 100%;
        justify-content: space-between;
    }
}

@media screen and (max-width: 480px) {
    .stat-card {
        padding: 1rem;
    }

    .stat-info p {
        font-size: 1.2rem;
    }

    .welcome-section h2 {
        font-size: 1.5rem;
    }

    .modal-container {
        padding: 1rem;
    }

    .expense-item {
        padding: 1rem;
    }

    .group-card {
        padding: 1rem;
    }

    .auth-container {
        width: 90%;
        padding: 1.5rem;
    }

    .form-group input,
    .form-group select {
        padding: 0.75rem;
    }

    .member-info {
        flex-direction: column;
        align-items: flex-start;
    }

    .payment-details {
        width: 100%;
    }

    .avatar-dropdown {
        right: -10px;
        min-width: 160px;
    }
}

/* Mobile menu button */
.menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
}

@media screen and (max-width: 768px) {
    .menu-btn {
        display: block;
    }
}

/* Sidebar close button */
.sidebar-close {
    display: none;  /* Hide by default in desktop */
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
    margin-left: auto;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) ease;
    width: 32px;
    height: 32px;
    align-items: center;
    justify-content: center;
}

.sidebar-close:hover {
    color: var(--primary-color);
    background-color: rgba(var(--primary-color-rgb), 0.1);
}

@media screen and (max-width: 768px) {
    .logo {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        margin-bottom: 2rem;
    }
    
    .sidebar-close {
        display: flex !important; /* Force display in mobile mode */
    }
}

/* Sidebar overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

@media screen and (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        z-index: 1000;
        width: 250px;
        transform: translateX(-100%);
        transition: transform var(--transition-speed) ease;
        display: block !important;
    }

    .sidebar.active {
        transform: translateX(0);
    }
}

/* About Section Styles */
.about-container {
    padding: 20px;
    display: grid;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.about-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease;
}

.about-card:hover {
    transform: translateY(-2px);
}

.about-card h3 {
    color: var(--primary-color);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
}

.about-card h3 i {
    font-size: 1.5rem;
}

.about-card p {
    color: var(--text-color);
    line-height: 1.6;
    margin-bottom: 16px;
}

.about-card.features ul {
    list-style: none;
    padding: 0;
}

.about-card.features li {
    margin: 12px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-card.features i {
    color: var(--primary-color);
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-color);
    color: white;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.contact-btn:hover {
    background: #00B894;  /* Green color */
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 184, 148, 0.2);
}

.contact-btn i {
    font-size: 1.1rem;
}

@media (min-width: 768px) {
    .about-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-card.mission,
    .about-card.dev-note,
    .about-card.contact {
        grid-column: 1 / -1;
    }
}

/* Notification Dropdown Styles */
.notification-dropdown {
    position: absolute;
    top: 45px;
    right: -10px;
    width: 380px;
    background: var(--card-background);
    border: 1px solid #E1E6EF;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    padding: 0;
    overflow: hidden;
}

.notification-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.notification-dropdown::before {
    content: '';
    position: absolute;
    top: -8px;
    right: 20px;
    width: 16px;
    height: 16px;
    background: var(--card-background);
    border-left: 1px solid #E1E6EF;
    border-top: 1px solid #E1E6EF;
    transform: rotate(45deg);
}

.notification-dropdown .dropdown-header {
    font-weight: 600;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #E1E6EF;
    background: #F8FAFC;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1.1rem;
}

.notification-list {
    max-height: 400px;
    overflow-y: auto;
    padding: 0.75rem 0;
}

.notification-item {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #E1E6EF;
    cursor: pointer;
    background: var(--card-background);
    transition: all var(--transition-speed) ease;
}

.notification-item:hover {
    background: #F8FAFC;
    transform: translateX(4px);
}

.notification-item.unread {
    background: rgba(var(--primary-color-rgb), 0.05);
    border-left: 3px solid var(--primary-color);
}

.notification-item:last-child {
    border-bottom: none;
}

.notification-message {
    font-size: 1rem;
    color: var(--text-color);
    margin-bottom: 0.75rem;
    line-height: 1.5;
}

.notification-time {
    font-size: 0.9rem;
    color: #64748B;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.notification-time i {
    font-size: 0.9rem;
}

.dropdown-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid #E1E6EF;
    background: #F8FAFC;
    text-align: right;
}

#clearNotificationsBtn {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-speed) ease;
}

#clearNotificationsBtn:hover {
    background: #ef4444;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--danger-color-rgb), 0.2);
}

#clearNotificationsBtn i {
    font-size: 1rem;
}

.no-notifications {
    padding: 3rem 2rem;
    text-align: center;
    color: #64748B;
    font-size: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.no-notifications i {
    font-size: 2.5rem;
    color: #CBD5E1;
}

/* Responsive Notification Styles */
@media screen and (max-width: 768px) {
    .notification-dropdown {
        position: fixed;
        top: 60px;
        right: 0;
        left: 0;
        width: 100%;
        max-width: 100%;
        border-radius: 0;
        border-left: none;
        border-right: none;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    }

    .notification-dropdown::before {
        display: none;
    }

    .notification-dropdown .dropdown-header {
        padding: 1rem;
        font-size: 1rem;
    }

    .notification-list {
        max-height: calc(100vh - 180px);
    }

    .notification-item {
        padding: 1rem;
    }

    .notification-message {
        font-size: 0.95rem;
    }

    .notification-time {
        font-size: 0.85rem;
    }

    .dropdown-footer {
        padding: 0.75rem 1rem;
    }

    #clearNotificationsBtn {
        width: 100%;
        justify-content: center;
        padding: 0.75rem;
    }

    .no-notifications {
        padding: 2rem 1rem;
    }

    .no-notifications i {
        font-size: 2rem;
    }
}

@media screen and (max-width: 480px) {
    .notification-dropdown {
        top: 50px;
    }

    .notification-dropdown .dropdown-header {
        padding: 0.875rem;
    }

    .notification-item {
        padding: 0.875rem;
    }

    .notification-message {
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }

    .notification-time {
        font-size: 0.8rem;
    }

    .dropdown-footer {
        padding: 0.75rem;
    }

    #clearNotificationsBtn {
        padding: 0.625rem;
        font-size: 0.9rem;
    }

    .no-notifications {
        padding: 1.5rem 1rem;
    }

    .no-notifications i {
        font-size: 1.75rem;
    }
}

/* Tablet-specific adjustments */
@media screen and (min-width: 769px) and (max-width: 1024px) {
    .notification-dropdown {
        width: 320px;
    }

    .notification-dropdown .dropdown-header {
        padding: 1.125rem 1.25rem;
    }

    .notification-item {
        padding: 1.125rem 1.25rem;
    }

    .notification-message {
        font-size: 0.95rem;
    }

    .notification-time {
        font-size: 0.85rem;
    }

    .dropdown-footer {
        padding: 0.875rem 1.25rem;
    }

    #clearNotificationsBtn {
        padding: 0.625rem 1rem;
        font-size: 0.9rem;
    }
}