:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --secondary-color: #64748b;
    --success-color: #16a34a;
    --success-light: #dcfce7;
    --warning-color: #ca8a04;
    --warning-light: #fef9c3;
    --danger-color: #dc2626;
    --danger-light: #fee2e2;
    --info-color: #0891b2;
    --info-light: #cffafe;
    
    --bg-color: #f8fafc;
    --sidebar-bg: #0f172a;
    --sidebar-text: #94a3b8;
    --sidebar-active: #ffffff;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --sidebar-width: 260px;
    --topbar-height: 64px;
    --border-radius: 8px;
    --transition: all 0.2s ease;
}

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

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

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

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 1000;
    transition: var(--transition);
}

.sidebar-header {
    padding: 20px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--sidebar-active);
}

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

.sidebar-nav {
    list-style: none;
    padding: 16px 12px;
    flex: 1;
}

.sidebar-nav .nav-item {
    margin-bottom: 4px;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
}

.sidebar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--sidebar-active);
}

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

.sidebar-nav .nav-link i {
    font-size: 1.125rem;
    width: 24px;
}

.sidebar-footer {
    padding: 16px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-bar {
    height: var(--topbar-height);
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.sidebar-toggle {
    display: none;
    padding: 8px;
    color: var(--text-secondary);
}

.sidebar-toggle i {
    font-size: 1.5rem;
}

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

.content-wrapper {
    padding: 24px;
    flex: 1;
}

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

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

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

.metric-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: var(--transition);
}

.metric-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.metric-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.metric-content {
    flex: 1;
    min-width: 0;
}

.metric-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.metric-trend {
    display: inline-block;
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 9999px;
    background-color: var(--bg-color);
    color: var(--text-secondary);
    margin-top: 8px;
}

.metric-trend.trend-up {
    background-color: var(--success-light);
    color: var(--success-color);
}

.metric-trend.trend-down {
    background-color: var(--danger-light);
    color: var(--danger-color);
}

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

.dashboard-card .card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    background-color: transparent;
    gap: 16px;
    flex-wrap: wrap;
}

.dashboard-card .card-title {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.dashboard-card .card-body {
    padding: 20px;
}

.table {
    margin: 0;
}

.table th {
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    background-color: var(--bg-color);
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: 12px 16px;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

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

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

.badge {
    font-weight: 500;
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 6px;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge.large {
    font-size: 0.875rem;
    padding: 6px 14px;
}

.status-new {
    background-color: var(--info-light);
    color: var(--info-color);
}

.status-qualified, .status-demo_ready {
    background-color: var(--warning-light);
    color: var(--warning-color);
}

.status-contacted {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.status-interested {
    background-color: #f0fdf4;
    color: #15803d;
}

.status-converted {
    background-color: var(--success-light);
    color: var(--success-color);
}

.status-lost, .status-failed {
    background-color: var(--danger-light);
    color: var(--danger-color);
}

.status-sent {
    background-color: var(--info-light);
    color: var(--info-color);
}

.status-delivered {
    background-color: var(--success-light);
    color: var(--success-color);
}

.status-queued {
    background-color: var(--bg-color);
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    padding: 48px 24px;
}

.empty-state i {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.empty-state h5 {
    font-weight: 600;
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.pipeline-tabs .nav-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    background-color: var(--card-bg);
    padding: 8px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.pipeline-tabs .nav-link {
    padding: 8px 16px;
    border-radius: 6px;
    color: var(--text-secondary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.pipeline-tabs .nav-link:hover {
    background-color: var(--bg-color);
}

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

.pipeline-tabs .nav-link .badge {
    font-size: 0.7rem;
    padding: 2px 6px;
}

.action-buttons {
    display: flex;
    gap: 8px;
}

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

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

.rating {
    display: flex;
    align-items: center;
    gap: 4px;
}

.tips-list {
    list-style: none;
    padding: 0;
}

.tips-list li {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.tips-list li i {
    flex-shrink: 0;
    margin-top: 2px;
}

.workflow-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.workflow-step {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    position: relative;
}

.workflow-step:not(:last-child)::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 40px;
    width: 2px;
    height: calc(100% - 20px);
    background-color: var(--border-color);
}

.workflow-step.active:not(:last-child)::before {
    background-color: var(--primary-color);
}

.step-number {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--bg-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
    z-index: 1;
}

.workflow-step.active .step-number {
    background-color: var(--primary-color);
    color: white;
}

.step-content {
    display: flex;
    flex-direction: column;
}

.step-content strong {
    font-size: 0.875rem;
}

.step-content small {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.info-list {
    margin: 0;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    gap: 16px;
}

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

.info-row dt {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.info-row dd {
    margin: 0;
    text-align: right;
    word-break: break-word;
}

.demo-preview {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.demo-iframe {
    width: 100%;
    height: 500px;
    border: none;
}

.demo-placeholder {
    background-color: var(--bg-color);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 48px 24px;
    text-align: center;
}

.placeholder-content i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.placeholder-content h5 {
    font-weight: 600;
    margin-bottom: 8px;
}

.placeholder-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.message-timeline {
    display: flex;
    flex-direction: column;
}

.message-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.message-item:last-child {
    border-bottom: none;
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 4px;
}

.message-template {
    font-weight: 500;
}

.message-status {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 9999px;
}

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

.funnel-chart {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.funnel-stage {
    display: flex;
}

.funnel-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background-color: var(--primary-light);
    color: var(--primary-color);
    border-radius: var(--border-radius);
    font-weight: 500;
    min-width: 120px;
}

.funnel-label {
    font-size: 0.875rem;
}

.funnel-value {
    font-weight: 700;
}

.stat-box {
    padding: 16px;
    background-color: var(--bg-color);
    border-radius: var(--border-radius);
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.accordion-button:not(.collapsed) {
    background-color: var(--bg-color);
    color: var(--text-primary);
}

.accordion-button:focus {
    box-shadow: none;
    border-color: var(--border-color);
}

@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .sidebar-toggle {
        display: block;
    }
    
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }
    
    .sidebar-overlay.show {
        display: block;
    }
}

@media (max-width: 575.98px) {
    .content-wrapper {
        padding: 16px;
    }
    
    .page-title {
        font-size: 1.25rem;
    }
    
    .metric-card {
        padding: 16px;
    }
    
    .metric-value {
        font-size: 1.5rem;
    }
    
    .pipeline-tabs .nav-pills {
        overflow-x: auto;
        flex-wrap: nowrap;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
}