:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #22d3ee;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --neutral: #6b7280;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border: #334155;
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.tagline {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: block;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.anycoder-link {
    color: var(--primary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: background 0.2s;
}

.anycoder-link:hover {
    background: rgba(99, 102, 241, 0.1);
}

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

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary);
}

/* Layout */
.app-container {
    display: flex;
    min-height: calc(100vh - 73px);
}

.sidebar {
    width: 250px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 2rem 0;
    position: fixed;
    height: calc(100vh - 73px);
    overflow-y: auto;
}

.sidebar-menu {
    list-style: none;
}

.menu-item {
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.menu-item:hover {
    background: var(--bg-tertiary);
    border-left: 3px solid var(--primary);
}

.menu-item.active {
    background: var(--bg-tertiary);
    border-left: 3px solid var(--primary);
    color: var(--primary);
}

.system-status {
    position: absolute;
    bottom: 2rem;
    left: 1.5rem;
    right: 1.5rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-indicator.online {
    background: var(--success);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.main-content {
    flex: 1;
    margin-left: 250px;
    padding: 2rem;
    max-width: 1200px;
    width: 100%;
}

.view {
    display: none;
}

.view.active {
    display: block;
}

.view-header {
    margin-bottom: 2rem;
}

.view-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.view-subtitle {
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

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

.btn-outline:hover {
    background: var(--bg-tertiary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    padding: 0.5rem;
}

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
}

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

.kpi-card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.2s;
}

.kpi-card:hover {
    transform: translateY(-2px);
}

.kpi-icon {
    font-size: 2rem;
}

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

.kpi-change {
    font-size: 0.875rem;
}

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

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

.kpi-change.neutral {
    color: var(--neutral);
}

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

/* Cards */
.card {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border);
}

.card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* Activity Feed */
.activity-feed {
    max-height: 300px;
    overflow-y: auto;
}

.activity-item {
    padding: 0.75rem;
    border-left: 3px solid var(--border);
    margin-bottom: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.activity-item.success {
    border-left-color: var(--success);
}

.activity-item.info {
    border-left-color: var(--primary);
}

.activity-item.warning {
    border-left-color: var(--warning);
}

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

/* Quick Actions */
.quick-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Chart Container */
.chart-container {
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 0.5rem;
    color: var(--text-secondary);
}

/* Profiles Grid */
.profiles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.profile-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: transform 0.2s;
}

.profile-card:hover {
    transform: translateY(-2px);
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.platform-icon {
    width: 48px;
    height: 48px;
}

.profile-info h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

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

.status-badge {
    margin-left: auto;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.active {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.profile-stats {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding: 1rem 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.stat {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.stat-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
}

.profile-actions {
    display: flex;
    gap: 0.75rem;
}

/* Campaigns */
.campaign-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.campaign-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.campaign-status {
    margin-left: auto;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.campaign-status.running {
    background: rgba(34, 211, 238, 0.2);
    color: var(--secondary);
}

.campaign-metrics {
    display: flex;
    gap: 2rem;
    margin-top: 1rem;
}

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

.metric span:last-child {
    color: var(--text-primary);
    font-weight: 600;
}

/* Modals */
.modal-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

.modal-close:hover {
    color: var(--text-primary);
}

/* Notification Panel */
.notification-panel {
    position: fixed;
    top: 73px;
    right: 1rem;
    width: 350px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1rem;
    z-index: 200;
    box-shadow: var(--shadow);
}

.notification-panel.hidden {
    display: none;
}

.notification-item {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: start;
}

.notification-item.unread {
    background: rgba(99, 102, 241, 0.1);
    border-left: 3px solid var(--primary);
}

.notification-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .nav {
        padding: 1rem;
    }
    
    .kpi-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .profiles-grid {
        grid-template-columns: 1fr;
    }
    
    .campaign-metrics {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border);
}