/* Reset and Base Styles - v1.1 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #764ba2;
    --success-color: #48bb78;
    --warning-color: #ed8936;
    --danger-color: #e53e3e;
    --info-color: #3182ce;
    
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-tertiary: #edf2f7;
    
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    --shadow-sm: 0 1px 3px 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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    overflow-x: hidden;
}

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

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 1000;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.sidebar-toggle:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

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

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

.nav-item {
    margin: 0.25rem 1rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    font-weight: 500;
}

.nav-link:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-link.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: var(--shadow-md);
}

.nav-link i {
    font-size: 1.1rem;
    width: 1.5rem;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.top-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.page-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
}

.user-menu {
    position: relative;
}

.user-menu-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: none;
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-primary);
}

.user-menu-toggle:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.user-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.875rem;
}

.user-name {
    font-weight: 500;
    color: var(--text-primary);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.dropdown-item:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.5rem 0;
}

.page-content {
    flex: 1;
    padding: 2rem;
}

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

.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.summary-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
    border: 1px solid var(--border-light);
}

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

.card-icon {
    width: 4rem;
    height: 4rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.summary-card.income .card-icon {
    background: linear-gradient(135deg, var(--success-color), #38a169);
}

.summary-card.expense .card-icon {
    background: linear-gradient(135deg, var(--danger-color), #c53030);
}

.summary-card.balance .card-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.card-content h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.amount {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

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

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

.change {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 600;
}

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

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

/* Charts Section */
.charts-section {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Period Statistics Cards */
.period-stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.period-stat-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
    border: 1px solid var(--border-light);
}

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

.stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.stat-content h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-amount {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

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

.stat-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.chart-container {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
}

.chart-canvas {
    position: relative;
    width: 100%;
    height: 320px;
    max-height: 60vh;
}

.chart-canvas canvas {
    width: 100% !important;
    height: 100% !important;
    display: block;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.chart-controls {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: flex-end;
}

.view-type-selector {
    display: flex;
    gap: 0.25rem;
}

.view-type-selector .btn {
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
}

.chart-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.chart-actions {
    display: flex;
    gap: 0.5rem;
}

/* Activity Section */
.activity-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.recent-transactions,
.budget-progress {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.section-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Breakdown Section */
.breakdown-section {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    margin-bottom: 2rem;
}

.section-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.breakdown-table {
    overflow-x: auto;
    margin-top: 1rem;
}

.breakdown-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.breakdown-table th,
.breakdown-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.breakdown-table th {
    background-color: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.75rem;
}

.breakdown-table td {
    color: var(--text-primary);
}

.breakdown-table td.income {
    color: var(--success-color);
    font-weight: 600;
}

.breakdown-table td.expense {
    color: var(--danger-color);
    font-weight: 600;
}

.breakdown-table td.positive {
    color: var(--success-color);
    font-weight: 600;
}

.breakdown-table td.negative {
    color: var(--danger-color);
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .sidebar-toggle {
        display: block;
    }
    
    .charts-section {
        grid-template-columns: 1fr;
    }
    
    .activity-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .summary-cards {
        grid-template-columns: 1fr;
    }
    
    .period-stats-cards {
        grid-template-columns: 1fr;
    }
    
    .page-content {
        padding: 1rem;
    }
    
    .top-header {
        padding: 1rem;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    .chart-canvas { height: 260px; }
}

/* Settings Page Styles */
.settings-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    background: var(--bg-secondary);
    min-height: 100vh;
}

.settings-header {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.header-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.header-text h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.header-text p {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin: 0;
}

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

.quick-stats {
    display: flex;
    gap: 2rem;
}

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

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.stat-value {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.settings-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.settings-header p {
    font-size: 1.125rem;
    color: var(--text-muted);
}

/* Settings Navigation */
.settings-nav {
    display: flex;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    overflow-x: auto;
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    min-width: fit-content;
}

.nav-tab:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

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

.nav-tab i {
    font-size: 1rem;
}

/* Settings Content */
.settings-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    overflow: hidden;
}

.tab-content {
    display: none;
    padding: 2rem;
}

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

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.settings-section {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
}

.section-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-info {
    flex: 1;
}

.header-actions {
    flex-shrink: 0;
}

.section-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.section-header p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
    margin-top: 1rem;
}

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

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.form-group label i {
    color: var(--primary-color);
    width: 1rem;
    text-align: center;
}

.form-help {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.form-help {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
    font-style: italic;
}

.form-group input,
.form-group select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group small {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    margin: 0;
}

/* Password Input Styles */
.password-input {
    position: relative;
    display: flex;
    align-items: center;
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

.password-input:focus-within {
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.password-toggle {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: all 0.2s ease;
    z-index: 2;
}

.password-toggle:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
    transform: translateY(-50%) scale(1.05);
}

.password-strength {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.5rem;
    border-radius: var(--radius);
    text-align: center;
    transition: all 0.3s ease;
}

.strength-weak {
    color: var(--danger-color);
}

.strength-medium {
    color: var(--warning-color);
}

.strength-strong {
    color: var(--success-color);
}

/* Error state for password inputs */
.password-input input.error {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.1);
}

.password-input input.error:focus {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.2);
}

.danger-zone {
    border: 2px solid var(--danger-color);
    background: linear-gradient(135deg, rgba(229, 62, 62, 0.05), rgba(229, 62, 62, 0.02));
}

.danger-zone .section-header h2 i {
    color: var(--danger-color);
}

.danger-warning {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 2rem;
    background: rgba(229, 62, 62, 0.05);
    border-radius: var(--radius-lg);
    margin-bottom: 2rem;
    border: 1px solid rgba(229, 62, 62, 0.2);
}

.warning-icon {
    flex-shrink: 0;
    width: 3rem;
    height: 3rem;
    background: rgba(229, 62, 62, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--danger-color);
    font-size: 1.5rem;
}

.warning-content h3 {
    color: var(--danger-color);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.warning-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.warning-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.warning-list li {
    color: var(--text-muted);
    font-size: 0.875rem;
    padding: 0.25rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.warning-list li::before {
    content: '⚠️';
    position: absolute;
    left: 0;
    top: 0.25rem;
}

.danger-warning i {
    color: var(--danger-color);
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.danger-warning h3 {
    color: var(--danger-color);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.danger-warning p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    margin: 0;
}

/* Alert Styles */
.alert-container {
    margin-bottom: 2rem;
}

.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    position: relative;
}

.alert-dismissible {
    padding-right: 3rem;
}

.alert-icon {
    flex-shrink: 0;
    width: 1.5rem;
    text-align: center;
}

.alert-content {
    flex: 1;
}

.alert-message {
    font-size: 0.875rem;
}

.alert-close {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    opacity: 0.7;
}

.alert-close:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

.alert-success {
    background: rgba(72, 187, 120, 0.1);
    border: 1px solid rgba(72, 187, 120, 0.3);
    color: var(--success-color);
}

.alert-error {
    background: rgba(229, 62, 62, 0.1);
    border: 1px solid rgba(229, 62, 62, 0.3);
    color: var(--danger-color);
}

/* Theme Classes */
.theme-dark {
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --bg-tertiary: #4a5568;
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #a0aec0;
    --border-color: #4a5568;
    --border-light: #2d3748;
}

.theme-light {
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-tertiary: #edf2f7;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
}

/* Settings Responsive Design */
@media (max-width: 768px) {
    .settings-container {
        padding: 1rem;
    }
    
    .settings-header {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .header-text h1 {
        font-size: 2rem;
    }
    
    .quick-stats {
        justify-content: center;
    }
    
    .settings-nav {
        overflow-x: auto;
        padding: 0.25rem;
    }
    
    .nav-tab {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
    
    .tab-content {
        padding: 1.5rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .danger-warning {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
    }
    
    .warning-icon {
        align-self: center;
    }
}