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

:root {
    --primary: #4361ee;
    --primary-light: #4895ef;
    --primary-dark: #3f37c9;
    --secondary: #4cc9f0;
    --success: #06d6a0;
    --warning: #ffb703;
    --danger: #ef233c;
    --dark: #2b2d42;
    --gray: #8d99ae;
    --light: #edf2f4;
    --white: #ffffff;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--light);
    color: var(--dark);
    min-height: 100vh;
}

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

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 2px solid var(--light);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo .material-icons {
    font-size: 32px;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-nav {
    flex: 1;
    padding: 24px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--gray);
    text-decoration: none;
    transition: all 0.3s ease;
    margin: 4px 8px;
    border-radius: var(--radius-md);
}

.nav-item:hover {
    background: var(--light);
    color: var(--primary);
}

.nav-item.active {
    background: var(--primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.nav-item .material-icons {
    font-size: 20px;
}

.footer-link{
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray);
    text-decoration: none;
    transition: all 0.3s ease;
}

.sidebar-footer {
    padding: 24px;
    border-top: 2px solid var(--light);
}

.sync-status-card {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: var(--light);
    border-radius: var(--radius-md);
    font-size: 14px;
}

.sync-status-card.online #syncIcon {
    color: var(--success);
    animation: none;
}

.sync-status-card.offline #syncIcon {
    color: var(--gray);
}

.sync-status-card.syncing #syncIcon {
    color: var(--warning);
    animation: spin 1s linear infinite;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    background: var(--light);
}

/* Main Header */
.main-header {
    background: var(--white);
    padding: 16px 32px;
    display: flex;
    align-items: center;
    gap: 24px;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 90;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray);
}

.menu-toggle .material-icons {
    font-size: 24px;
}

.header-search {
    flex: 1;
    max-width: 400px;
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--light);
    padding: 8px 16px;
    border-radius: var(--radius-xl);
}

.header-search .material-icons {
    color: var(--gray);
}

.header-search input {
    flex: 1;
    border: none;
    background: none;
    outline: none;
    font-size: 14px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-icon {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.btn-icon:hover {
    background: var(--light);
}

.btn-icon .material-icons {
    font-size: 24px;
    color: var(--gray);
}

/* Dashboard */
.dashboard {
    padding: 32px;
    max-width: 1400px;
    margin: 0 auto;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.stat-card.primary::before { background: var(--primary); }
.stat-card.secondary::before { background: var(--secondary); }
.stat-card.accent::before { background: var(--success); }
.stat-card.warning::before { background: var(--warning); }

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-card.primary .stat-icon {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
}

.stat-card.secondary .stat-icon {
    background: linear-gradient(135deg, var(--secondary), #72ddf7);
}

.stat-card.accent .stat-icon {
    background: linear-gradient(135deg, var(--success), #0ae6b5);
}

.stat-card.warning .stat-icon {
    background: linear-gradient(135deg, var(--warning), #ffcb47);
}

.stat-icon .material-icons {
    font-size: 30px;
    color: var(--white);
}

.stat-details {
    flex: 1;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 4px;
}

.stat-value {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.stat-trend {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    padding: 4px 8px;
    background: var(--light);
    border-radius: var(--radius-xl);
}

.stat-trend.positive {
    color: var(--success);
}

.stat-trend .material-icons {
    font-size: 14px;
}

/* Quick Add Card */
.quick-add-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-md);
}

.card-header {
    margin-bottom: 20px;
}

.card-header h2 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
}

.card-header h2 .material-icons {
    color: var(--primary);
}

.quick-add-form .form-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--light);
    border-radius: var(--radius-md);
    padding: 0 12px;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.input-group:focus-within {
    border-color: var(--primary);
    background: var(--white);
}

.input-group .material-icons {
    color: var(--gray);
}

.input-group input {
    flex: 1;
    border: none;
    background: none;
    padding: 12px 0;
    outline: none;
    font-size: 14px;
}

.btn-add {
    background: var(--primary);
    color: var(--white);
    border: none;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-add:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Expenses Section */
.expenses-section {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-md);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.section-header h2 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 600;
}

.section-header h2 .material-icons {
    color: var(--primary);
}

.filter-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-chip {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--light);
    border: none;
    border-radius: var(--radius-xl);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-chip .material-icons {
    font-size: 16px;
}

.filter-chip:hover {
    background: var(--primary-light);
    color: var(--white);
}

.filter-chip.active {
    background: var(--primary);
    color: var(--white);
}

/* Advanced Filters */
.advanced-filters {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
    padding: 16px;
    background: var(--light);
    border-radius: var(--radius-md);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--white);
    padding: 0 12px;
    border-radius: var(--radius-md);
}

.filter-group .material-icons {
    color: var(--gray);
}

.filter-group input {
    flex: 1;
    border: none;
    background: none;
    padding: 10px 0;
    outline: none;
}

.btn-clear-filters {
    background: var(--danger);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-clear-filters:hover {
    background: #d9042b;
    transform: scale(1.05);
}

.btn-clear-filters .material-icons {
    font-size: 20px;
}

/* Expenses Grid */
.expenses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.expense-card {
    background: var(--light);
    border-radius: var(--radius-md);
    padding: 16px;
    position: relative;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

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

.expense-card.pending {
    border-left-color: var(--warning);
    background: linear-gradient(45deg, var(--light), #fff3cd);
}

.expense-card.pending::after {
    content: '⏳';
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 16px;
}

.expense-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.expense-name {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 16px;
}

.expense-name .material-icons {
    color: var(--primary);
    font-size: 20px;
}

.expense-amount {
    font-weight: 700;
    font-size: 18px;
    color: var(--primary);
}

.expense-date {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 12px;
}

.expense-date .material-icons {
    font-size: 16px;
}

.expense-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.expense-card:hover .expense-actions {
    opacity: 1;
}

/* Styles pour la section paramètres */
.settings-card {
    background: white;
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.settings-card h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #2b2d42;
    margin-bottom: 20px;
    font-size: 18px;
    border-bottom: 2px solid #edf2f4;
    padding-bottom: 12px;
}

.currency-selector {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.currency-select {
    width: 100%;
    padding: 12px;
    border: 2px solid #edf2f4;
    border-radius: 8px;
    font-size: 16px;
    background: white;
    cursor: pointer;
}

.currency-select:focus {
    outline: none;
    border-color: #4361ee;
}

.currency-preview {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview-label {
    color: #8d99ae;
    font-size: 14px;
}

.preview-value {
    font-size: 20px;
    font-weight: 600;
    color: #2b2d42;
}

.format-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.format-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border: 2px solid #edf2f4;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.format-option:hover {
    border-color: #4361ee;
    background: #f8f9fa;
}

.format-option input[type="radio"] {
    margin-right: 8px;
}

.format-option .material-icons {
    color: #4361ee;
}

.format-option small {
    color: #8d99ae;
    font-size: 12px;
    margin-left: auto;
}

.storage-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.storage-option {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    border: 2px solid #edf2f4;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.storage-option:hover {
    border-color: #4361ee;
    background: #f8f9fa;
}

.storage-option.selected {
    border-color: #4361ee;
    background: #e8f0fe;
}

.storage-option .material-icons {
    font-size: 30px;
    color: #4361ee;
}

.storage-desc {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.storage-title {
    font-weight: 600;
    color: #2b2d42;
}

.storage-detail {
    font-size: 12px;
    color: #8d99ae;
}

.warning-badge {
    background: #f8961e;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    margin-left: 10px;
}

.drive-status {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px;
    border-radius: 8px;
    margin-top: 10px;
}

.drive-status.connected {
    background: #e8f5e9;
    color: #2e7d32;
}

.drive-status.disconnected {
    background: #ffebee;
    color: #c62828;
}

.drive-status .material-icons {
    font-size: 20px;
}

.btn-small {
    padding: 5px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    margin-left: auto;
    background: white;
    border: 1px solid currentColor;
}

.btn-small:hover {
    opacity: 0.9;
}

.auto-backup-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.toggle-option {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.toggle-slider {
    width: 50px;
    height: 24px;
    background: #edf2f4;
    border-radius: 12px;
    position: relative;
    transition: all 0.3s ease;
}

.toggle-slider:before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: all 0.3s ease;
}

input:checked + .toggle-slider {
    background: #4361ee;
}

input:checked + .toggle-slider:before {
    transform: translateX(26px);
}

.backup-frequency {
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.backup-frequency select {
    width: 100%;
    padding: 8px;
    border: 2px solid #edf2f4;
    border-radius: 4px;
    margin-top: 5px;
}

.quick-actions {
    display: flex;
    gap: 10px;
}

.quick-actions button {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.quick-actions button:hover {
    transform: translateY(-2px);
}

.btn-delete {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

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

/* Empty State */
.empty-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--gray);
}

.empty-message .material-icons {
    font-size: 64px;
    margin-bottom: 16px;
    color: var(--light);
}

.empty-message p {
    font-size: 16px;
}

/* Styles PWA */
.update-notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    padding: 16px 20px;
    z-index: 2000;
    animation: slideUp 0.3s ease;
    border-left: 4px solid #4361ee;
}

.update-content {
    display: flex;
    align-items: center;
    gap: 15px;
}

.update-content .material-icons {
    color: #4361ee;
    font-size: 24px;
}

.btn-update {
    background: #4361ee;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-update:hover {
    background: #3f37c9;
    transform: translateY(-2px);
}

/* Install PWA prompt */
.install-prompt {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    padding: 16px;
    z-index: 2000;
    animation: slideUp 0.3s ease;
    max-width: 300px;
}

.install-content {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.install-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.install-header .material-icons {
    color: #4361ee;
}

.install-buttons {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.install-btn {
    flex: 1;
    padding: 8px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.install-btn.primary {
    background: #4361ee;
    color: white;
}

.install-btn.secondary {
    background: #f8f9fa;
    color: #2b2d42;
}

.install-btn:hover {
    transform: translateY(-2px);
}

/* Animations */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .quick-add-form .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
     .menu-toggle {
        display: flex;
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }

    .advanced-filters {
        grid-template-columns: repeat(2, 1fr);
    }

}

@media (max-width: 768px) {

    .header-search {
        max-width: 100%;
        padding: 3px;
    }
    .main-header {
        padding: 16px;
    }

    .dashboard {
        padding: 16px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .quick-add-form .form-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .filter-chips {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 8px;
    }
    
    .advanced-filters {
        grid-template-columns: 1fr;
    }
    
    .expenses-grid {
        grid-template-columns: 1fr;
    }
    
    .expense-actions {
        opacity: 1;
    }
}

/* Notifications */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    animation: slideIn 0.3s ease;
    max-width: 400px;
}

.budget-progress {
    width: 100%;
    height: 6px;
    background: #edf2f4;
    border-radius: 3px;
    margin: 8px 0;
    overflow: hidden;
}

.budget-progress-bar {
    height: 100%;
    background: #4361ee;
    border-radius: 3px;
    transition: width 0.3s ease;
}

/* Overlay pour le menu mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 95;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

/* Amélioration de la transition du sidebar */
.sidebar {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-donate {
    background: var(--primary);
    color: var(--white);
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

/* Styles pour le bouton menu */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    background: var(--light);
    color: var(--primary);
}

.menu-toggle .material-icons {
    font-size: 24px;
}

/* Responsive */
@media (max-width: 992px) {
    .menu-toggle {
        display: flex;
    }
    
    .sidebar {
        transform: translateX(-100%); 
         box-shadow: none;
    }
    
    .sidebar.active {
        transform: translateX(0);
        box-shadow: var(--shadow-xl);
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
    }
    
    /* Empêcher le scroll quand le menu est ouvert */
    body.menu-open {
        overflow: hidden;
    }
}

/* Animation d'entrée du menu */
@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

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

.notification.success { background: var(--success); }
.notification.error { background: var(--danger); }
.notification.info { background: var(--primary); }
.notification.warning { background: var(--warning); }

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

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