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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #f7fafc;
    color: #2d3748;
    line-height: 1.6;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: #1a202c;
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid #2d3748;
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.sidebar-nav {
    padding: 16px 0;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: #cbd5e0;
    text-decoration: none;
    transition: all 0.2s;
}

.nav-item:hover {
    background: #2d3748;
    color: white;
}

.nav-item.active {
    background: #2563EB;
    color: white;
}

.nav-item svg {
    flex-shrink: 0;
}

.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.top-header {
    background: white;
    border-bottom: 1px solid #e2e8f0;
    padding: 16px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.breadcrumb {
    font-size: 14px;
    color: #718096;
}

.breadcrumb span {
    color: #2d3748;
    font-weight: 500;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #f7fafc;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

.search-box svg {
    color: #718096;
}

.search-box input {
    border: none;
    background: transparent;
    outline: none;
    font-size: 14px;
    width: 200px;
}

.icon-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    position: relative;
    color: #4a5568;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: #f7fafc;
    color: #2d3748;
}

.notification-btn .badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background: #ef4444;
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.user-profile:hover {
    background: #f7fafc;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #4a5568;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
}

.content-area {
    flex: 1;
    padding: 32px;
}

.page-header {
    margin-bottom: 32px;
}

.page-header h1 {
    font-size: 32px;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 8px;
}

.page-header p {
    font-size: 16px;
    color: #718096;
}

.settings-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    border-bottom: 1px solid #e2e8f0;
}

.tab-button {
    padding: 12px 24px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    font-size: 14px;
    font-weight: 500;
    color: #718096;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: -1px;
}

.tab-button:hover {
    color: #2d3748;
}

.tab-button.active {
    color: #2563EB;
    border-bottom-color: #2563EB;
}

.settings-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.settings-section {
    background: white;
    border-radius: 12px;
    padding: 32px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.section-header {
    margin-bottom: 24px;
}

.section-header h2 {
    font-size: 20px;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 4px;
}

.section-header p {
    font-size: 14px;
    color: #718096;
}

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: #2d3748;
}

.form-group input,
.form-group select {
    padding: 10px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #2563EB;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input:disabled {
    background: #f7fafc;
    color: #718096;
    cursor: not-allowed;
}

.filter-select {
    padding: 10px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 14px;
    background: white;
    cursor: pointer;
}

.form-actions {
    display: flex;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid #e2e8f0;
    margin-top: 8px;
}

.btn-primary {
    padding: 12px 24px;
    background: #2563EB;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    padding: 12px 24px;
    background: #f7fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: #2d3748;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: #edf2f7;
    border-color: #cbd5e0;
}

.profile-photo-section {
    display: flex;
    align-items: center;
    gap: 24px;
}

.photo-preview {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.photo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #718096;
}

.photo-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-link-danger {
    background: transparent;
    border: none;
    color: #ef4444;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
}

.btn-link-danger:hover {
    color: #dc2626;
    text-decoration: underline;
}

.toggle-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.toggle-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: #f7fafc;
    border-radius: 8px;
}

.toggle-info h3 {
    font-size: 14px;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 4px;
}

.toggle-info p {
    font-size: 12px;
    color: #718096;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #cbd5e0;
    transition: 0.3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

.toggle-switch input:checked + .slider {
    background-color: #2563EB;
}

.toggle-switch input:checked + .slider:before {
    transform: translateX(24px);
}

.integrations-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.integration-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: #f7fafc;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

.integration-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.integration-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background: #dbeafe;
    color: #2563EB;
    display: flex;
    align-items: center;
    justify-content: center;
}

.integration-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 4px;
}

.integration-info p {
    font-size: 14px;
    color: #718096;
}

.danger-zone {
    border: 2px solid #fee2e2;
    background: #fef2f2;
}

.danger-zone .section-header h2 {
    color: #991b1b;
}

.danger-actions {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.danger-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: white;
    border-radius: 8px;
    border: 1px solid #fee2e2;
}

.danger-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: #991b1b;
    margin-bottom: 4px;
}

.danger-item p {
    font-size: 14px;
    color: #718096;
}

.btn-danger {
    padding: 12px 24px;
    background: #ef4444;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-danger:hover {
    background: #dc2626;
}

.main-footer {
    background: white;
    border-top: 1px solid #e2e8f0;
    padding: 20px 32px;
    text-align: center;
    color: #718096;
    font-size: 14px;
}

@media (max-width: 1024px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 80px;
    }
    
    .sidebar-header h2 {
        display: none;
    }
    
    .nav-item span {
        display: none;
    }
    
    .main-content {
        margin-left: 80px;
    }
    
    .settings-tabs {
        overflow-x: auto;
    }
    
    .profile-photo-section {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .integration-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .danger-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
}