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

:root {
    --primary-color: #4285f4;
    --primary-dark: #3367d6;
    --secondary-color: #5f6368;
    --danger-color: #ea4335;
    --success-color: #34a853;
    --warning-color: #fbbc04;
    --bg-color: #f8f9fa;
    --sidebar-bg: #202124;
    --card-bg: #ffffff;
    --border-color: #dadce0;
    --text-primary: #202124;
    --text-secondary: #5f6368;
}

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

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

.sidebar {
    width: 240px;
    background-color: var(--sidebar-bg);
    color: white;
    padding: 20px 0;
    flex-shrink: 0;
}

.logo {
    padding: 0 20px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 500;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 10px;
}

.profile-image {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.profile-placeholder {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    font-size: 1.1rem;
}

.user-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.user-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: white;
}

.logout-link {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.6);
    text-decoration: none;
}

.logout-link:hover {
    color: white;
    text-decoration: underline;
}

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    padding: 20px;
}

.login-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 48px;
    max-width: 420px;
    width: 100%;
    text-align: center;
}

.login-logo h1 {
    color: white;
    font-size: 2rem;
    margin-bottom: 8px;
}

.login-logo p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 1rem;
    margin-bottom: 32px;
}

.login-features {
    text-align: left;
    margin-bottom: 32px;
}

.login-features .feature {
    color: rgba(255, 255, 255, 0.8);
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.95rem;
}

.login-features .feature:last-child {
    border-bottom: none;
}

.btn-login {
    display: block;
    width: 100%;
    padding: 16px 24px;
    font-size: 1.1rem;
    border-radius: 12px;
    text-decoration: none;
    margin-bottom: 16px;
}

.login-footer {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.8rem;
}

.nav-menu {
    list-style: none;
    padding: 10px 0;
}

.nav-item {
    padding: 12px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,0.7);
    transition: all 0.2s;
}

.nav-item:hover {
    background-color: rgba(255,255,255,0.1);
    color: white;
}

.nav-item.active {
    background-color: rgba(66, 133, 244, 0.3);
    color: white;
}

.nav-item .icon {
    font-size: 1.25rem;
}

.main-content {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

.view {
    display: none;
}

.view.active {
    display: block;
}

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

.view-header h2 {
    font-size: 1.5rem;
    font-weight: 500;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s;
}

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

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

.btn-primary:disabled {
    background-color: var(--border-color);
    cursor: not-allowed;
}

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

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

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

.btn-danger:hover {
    background-color: #d93025;
}

.btn-danger:disabled {
    background-color: var(--border-color);
    cursor: not-allowed;
}

.chat-container {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    height: calc(100vh - 140px);
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.message {
    margin-bottom: 16px;
    max-width: 80%;
}

.message.user {
    margin-left: auto;
}

.message-content {
    padding: 12px 16px;
    border-radius: 12px;
    background-color: var(--bg-color);
}

.message.user .message-content {
    background-color: var(--primary-color);
    color: white;
}

.message.assistant .message-content ul {
    margin-top: 8px;
    padding-left: 20px;
}

.message.assistant .message-content li {
    margin-bottom: 4px;
}

.chat-input-container {
    display: flex;
    gap: 12px;
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

#chat-input {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
    resize: none;
    font-family: inherit;
}

#chat-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.accounts-split-view {
    display: flex;
    gap: 20px;
    height: calc(100vh - 140px);
}

.accounts-panel {
    flex: 1;
    overflow-y: auto;
}

.accounts-chat-panel {
    width: 400px;
    display: flex;
    flex-direction: column;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.chat-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.chat-panel-header h3 {
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
}

.btn-small {
    padding: 4px 10px;
    font-size: 0.75rem;
}

.accounts-chat-panel .chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
    max-height: none;
}

.accounts-chat-panel .chat-input-container {
    padding: 12px;
}

.accounts-chat-panel .chat-input-container textarea {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.875rem;
    resize: none;
    font-family: inherit;
}

.accounts-chat-panel .chat-input-container textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.accounts-tree {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.account-item {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}

.account-header {
    padding: 16px;
    background-color: var(--bg-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
}

.account-header:hover {
    background-color: #e8eaed;
}

.expand-icon {
    font-size: 0.75rem;
    transition: transform 0.2s;
    color: var(--text-secondary);
}

.expand-icon.rotated {
    transform: rotate(90deg);
}

.clickable {
    cursor: pointer;
}

.account-name {
    font-weight: 500;
}

.account-id {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.account-badge {
    background-color: var(--primary-color);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-left: auto;
}

.account-children,
.campaign-children,
.ad-group-children {
    padding-left: 28px;
    display: none;
}

.account-children.expanded,
.campaign-children.expanded,
.ad-group-children.expanded {
    display: block;
}

.sub-account-item {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.sub-account-item:hover {
    background-color: var(--bg-color);
}

.campaign-item {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: #f0f4ff;
}

.campaign-item:hover {
    background-color: #e3eafc;
}

.campaign-name {
    font-weight: 500;
    font-size: 0.9rem;
}

.campaign-status,
.ad-group-status {
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 3px;
}

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

.status-paused {
    background-color: var(--warning-color);
    color: #333;
}

.ad-group-item {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: #f9f9f9;
}

.ad-group-name {
    font-size: 0.875rem;
}

.filters-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filters-bar select {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.875rem;
    min-width: 200px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: var(--bg-color);
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.data-table tbody tr:hover {
    background-color: var(--bg-color);
}

.data-table .empty-message {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
}

.action-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 8px;
    margin-bottom: 16px;
}

.action-bar.hidden {
    display: none;
}

.tasks-list {
    display: grid;
    gap: 16px;
}

.task-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

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

.task-card-title {
    font-weight: 500;
    font-size: 1.1rem;
}

.task-card-actions {
    display: flex;
    gap: 8px;
}

.task-card-actions button {
    padding: 6px 12px;
    font-size: 0.75rem;
}

.task-card-meta {
    display: flex;
    gap: 16px;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.task-status {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.task-status.active {
    background-color: rgba(52, 168, 83, 0.1);
    color: var(--success-color);
}

.task-status.inactive {
    background-color: rgba(95, 99, 104, 0.1);
    color: var(--text-secondary);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.hidden {
    display: none;
}

.modal {
    background-color: var(--card-bg);
    border-radius: 8px;
    width: 500px;
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-weight: 500;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.875rem;
    font-family: inherit;
}

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

.form-row {
    display: flex;
    gap: 16px;
}

.form-row .form-group {
    flex: 1;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
}

.loading {
    color: var(--text-secondary);
    text-align: center;
    padding: 40px;
}

.section-description {
    color: var(--text-secondary);
    margin: 0 0 20px;
    padding: 0;
    font-size: 0.95rem;
}

.task-status.auto-apply {
    background-color: var(--primary-color);
    color: white;
}

.thinking {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    padding: 12px 16px;
}

.thinking::after {
    content: '';
    width: 12px;
    height: 12px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.status-badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge.status-active {
    background: rgba(72, 187, 120, 0.2);
    color: #48bb78;
}

.status-badge.status-paused {
    background: rgba(160, 174, 192, 0.2);
    color: #a0aec0;
}

.reporting-tab {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
}

.reporting-tab.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

#create-report-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

#create-report-modal .modal-content {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 8px;
    width: 100%;
}

.btn-danger {
    background: #e53e3e;
    color: white;
}

.btn-danger:hover {
    background: #c53030;
}

@media (max-width: 768px) {
    .sidebar {
        width: 60px;
    }
    
    .logo h1,
    .nav-item span:not(.icon) {
        display: none;
    }
    
    .nav-item {
        justify-content: center;
    }
    
    .filters-bar {
        flex-direction: column;
    }
    
    .filters-bar select {
        width: 100%;
    }
}