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

:root {
    --primary-color: #4F46E5;
    --primary-dark: #3730A3;
    --secondary-color: #06B6D4;
    --accent-color: #F59E0B;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    --background: #F8FAFC;
    --surface: #FFFFFF;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-tertiary: #9CA3AF;
    --border-color: #E5E7EB;
    --border-light: #F3F4F6;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition: all 0.2s ease;
}

[data-theme="dark"] {
    --background: #0F172A;
    --surface: #1E293B;
    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-tertiary: #64748B;
    --border-color: #334155;
    --border-light: #475569;
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.5;
    transition: var(--transition);
}

.hidden {
    display: none !important;
}

/* Login Screen */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 2rem;
}

.login-container {
    background: var(--surface);
    padding: 3rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-secondary);
}

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

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

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
}

.form-input {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--surface);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(79 70 229 / 0.1);
}

.login-btn {
    padding: 0.875rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.login-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.error-message {
    color: var(--error-color);
    font-size: 0.875rem;
    text-align: center;
    margin-top: 1rem;
}

/* Dashboard Layout */
.dashboard {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    width: 280px;
    background: var(--surface);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

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

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

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

.logo span {
    font-size: 1.25rem;
    font-weight: 700;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.sidebar-toggle:hover {
    background: var(--border-light);
}

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

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

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

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.nav-link:hover {
    background: var(--border-light);
    color: var(--text-primary);
}

.nav-link.active {
    background: var(--primary-color);
    color: white;
}

.nav-link i {
    width: 1.25rem;
    text-align: center;
}

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

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

.user-avatar {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    font-size: 0.875rem;
}

.user-email {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.logout-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.logout-btn:hover {
    background: var(--border-light);
    color: var(--error-color);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.header {
    background: var(--surface);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

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

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--border-light);
}

.notification-bell {
    position: relative;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.notification-bell:hover {
    background: var(--border-light);
}

.notification-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--error-color);
    color: white;
    font-size: 0.75rem;
    padding: 0.125rem 0.375rem;
    border-radius: 1rem;
    min-width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Content */
.content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

.content-section {
    display: none;
}

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

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

.section-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: var(--transition);
}

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

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

.stat-content h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-change {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

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

/* Overview Grid */
.overview-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.plan-overview, .quick-actions {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.plan-overview h2, .quick-actions h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.plan-card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
}

.plan-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.plan-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.plan-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.usage-bar {
    width: 100%;
    height: 0.5rem;
    background: var(--border-light);
    border-radius: 0.25rem;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.usage-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color), var(--warning-color));
    transition: width 0.3s ease;
}

.usage-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
    border-radius: 1rem;
    font-weight: 500;
}

.status-badge.active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

/* Actions Grid */
.actions-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    font-size: 0.875rem;
}

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

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

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

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

.action-btn.tertiary {
    background: var(--accent-color);
    color: white;
}

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

/* Recent Activity */
.recent-activity {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.recent-activity h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

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

.activity-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--border-light);
}

.status {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.status.delivered {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status.failed {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.status.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    font-size: 0.875rem;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

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

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

.btn.secondary {
    background: var(--border-light);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn.tertiary {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

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

.btn.danger:hover {
    background: #DC2626;
}

.btn.small {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* API Keys Section */
.api-keys-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.api-key-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
}

.api-key-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.api-key-header h3 {
    font-weight: 600;
}

.key-status {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
}

.key-status.active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

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

.key-value code {
    background: var(--border-light);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.875rem;
    flex: 1;
    word-break: break-all;
}

.copy-btn {
    background: none;
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

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

.key-details {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

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

.api-config {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.api-config h3 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

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

.config-item label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.config-item code {
    background: var(--border-light);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.875rem;
}

/* Analytics Section */
.analytics-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.chart-container {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.chart-container h3 {
    font-weight: 600;
    margin-bottom: 1rem;
}

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

.detail-card {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.detail-card h4 {
    font-weight: 600;
    margin-bottom: 1rem;
}

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

.domain-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-light);
}

.domain-list li:last-child {
    border-bottom: none;
}

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

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-light);
}

.stat-row:last-child {
    border-bottom: none;
}

/* Templates Section */
.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.template-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.template-preview {
    padding: 1.5rem;
}

.template-preview h4 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.template-content {
    background: var(--border-light);
    padding: 1rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
}

.template-content p {
    margin-bottom: 0.5rem;
}

.template-content p:last-child {
    margin-bottom: 0;
}

.template-actions {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 0.5rem;
}

.template-editor {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.template-editor h3 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.variables-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.variable {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.75rem;
}

/* Billing Section */
.billing-overview {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.billing-card, .usage-summary {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.billing-card h3, .usage-summary h3 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.plan-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.plan-name {
    font-weight: 600;
    font-size: 1.125rem;
}

.plan-cost {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.billing-stats {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.usage-bar-large {
    width: 100%;
    height: 1rem;
    background: var(--border-light);
    border-radius: 0.5rem;
    overflow: hidden;
    margin-bottom: 1rem;
}

.usage-fill-large {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color), var(--warning-color));
    transition: width 0.3s ease;
}

.usage-text {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.usage-percentage {
    font-weight: 600;
    color: var(--success-color);
}

.usage-alert {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--border-radius);
    color: var(--primary-color);
    font-size: 0.875rem;
}

.plans-comparison {
    margin-bottom: 2rem;
}

.plans-comparison h3 {
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.plan-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    position: relative;
}

.plan-card.current {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 1px var(--primary-color);
}

.plan-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.plan-header h4 {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.plan-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.plan-price span {
    font-size: 1rem;
    color: var(--text-secondary);
}

.current-badge {
    position: absolute;
    top: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.plan-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
}

.plan-features li:before {
    content: '✓';
    color: var(--success-color);
    font-weight: 600;
}

.billing-history {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.billing-history h3 {
    font-weight: 600;
    margin-bottom: 1rem;
}

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

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

.history-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--border-light);
}

.status.paid {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.link {
    color: var(--primary-color);
    text-decoration: none;
}

.link:hover {
    text-decoration: underline;
}

/* Settings Section */
.settings-tabs {
    background: var(--surface);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.tab-nav {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    background: none;
    border: none;
    padding: 1rem;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

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

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

.tab-content {
    display: none;
    padding: 1.5rem;
}

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

.settings-section {
    margin-bottom: 2rem;
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-section h3 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 500px;
}

.color-picker {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.color-input {
    width: 3rem;
    height: 3rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
}

.color-value {
    font-family: 'Monaco', 'Menlo', monospace;
    font-weight: 600;
}

.file-upload {
    position: relative;
}

.file-input {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(79, 70, 229, 0.05);
}

.file-upload-area i {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.file-upload-area span {
    display: block;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.file-upload-area small {
    color: var(--text-secondary);
}

.security-option, .notification-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.option-info h4 {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.option-info p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 3rem;
    height: 1.5rem;
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: var(--transition);
    border-radius: 1.5rem;
}

.slider:before {
    position: absolute;
    content: "";
    height: 1.25rem;
    width: 1.25rem;
    left: 0.125rem;
    bottom: 0.125rem;
    background-color: white;
    transition: var(--transition);
    border-radius: 50%;
}

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

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

.notification-options {
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* Support Section */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.support-card {
    background: var(--surface);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
}

.support-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 1.5rem;
}

.support-card h3 {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.support-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.contact-info {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.contact-info h3 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.contact-item i {
    width: 1.25rem;
    color: var(--primary-color);
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

.form-select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
}

/* Date Filter */
.date-filter {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .overview-grid,
    .analytics-grid,
    .billing-overview {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -280px;
        z-index: 1000;
        height: 100vh;
    }

    .sidebar.open {
        left: 0;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .header {
        padding: 1rem;
    }

    .content {
        padding: 1rem;
    }

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

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

    .tab-nav {
        flex-wrap: wrap;
    }

    .tab-btn {
        min-width: 120px;
    }

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

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

    .activity-table {
        overflow-x: auto;
    }

    .activity-table table {
        min-width: 600px;
    }
}