@extends('layouts.app')

@section('title', 'Dashboard')

@section('content')
<h2 class="page-title">Overview</h2>

<!-- Advanced Premium KPI Cards -->
<style>
    .kpi-card {
        padding: 30px;
        border-radius: 20px;
        color: white;
        position: relative;
        overflow: hidden;
        border: none;
    }
    .kpi-card::before {
        content: '';
        position: absolute;
        top: -50%; right: -20%;
        width: 150px; height: 150px;
        background: rgba(255,255,255,0.1);
        border-radius: 50%;
        transform: rotate(-45deg);
    }
    .kpi-card::after {
        content: '';
        position: absolute;
        bottom: -20%; left: -10%;
        width: 100px; height: 100px;
        background: rgba(255,255,255,0.1);
        border-radius: 50%;
    }
    .kpi-icon {
        position: absolute;
        right: 20px;
        bottom: 20px;
        font-size: 80px;
        opacity: 0.15;
        transform: rotate(-10deg);
        transition: all 0.3s ease;
    }
    .kpi-card:hover .kpi-icon {
        transform: rotate(0deg) scale(1.1);
        opacity: 0.25;
    }
    .kpi-title { font-size: 14px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; opacity: 0.9; margin-bottom: 10px; }
    .card-number { font-size: 38px; line-height: 1; margin: 0; }
    
    .bg-gradient-purple { background: linear-gradient(135deg, #6A1B9A 0%, #8E24AA 100%); box-shadow: 0 10px 20px rgba(106, 27, 154, 0.2); }
    .bg-gradient-blue { background: linear-gradient(135deg, #1E88E5 0%, #1565C0 100%); box-shadow: 0 10px 20px rgba(30, 136, 229, 0.2); }
    .bg-gradient-orange { background: linear-gradient(135deg, #FF8F00 0%, #E65100 100%); box-shadow: 0 10px 20px rgba(255, 143, 0, 0.2); }
    .bg-gradient-green { background: linear-gradient(135deg, #43A047 0%, #2E7D32 100%); box-shadow: 0 10px 20px rgba(67, 160, 71, 0.2); }
    .bg-gradient-red { background: linear-gradient(135deg, #E53935 0%, #C62828 100%); box-shadow: 0 10px 20px rgba(229, 57, 53, 0.2); }
</style>

<div class="row mb-5 g-4">
    <div class="col-lg-6 col-md-6">
        <div class="card kpi-card bg-gradient-purple h-100">
            <div class="d-flex justify-content-between align-items-center">
                <div>
                    <div class="kpi-title">Total Customers</div>
                    <h3 class="card-number">{{ number_format($totalCustomers) }}</h3>
                </div>
                <i class="fas fa-users kpi-icon position-static opacity-25" style="font-size: 60px; transform: none;"></i>
            </div>
        </div>
    </div>
    <div class="col-lg-6 col-md-6">
        <div class="card kpi-card bg-gradient-blue h-100">
            <div class="d-flex justify-content-between align-items-center">
                <div>
                    <div class="kpi-title">Total Invoices</div>
                    <h3 class="card-number">{{ number_format($totalInvoices) }}</h3>
                </div>
                <i class="fas fa-file-invoice kpi-icon position-static opacity-25" style="font-size: 60px; transform: none;"></i>
            </div>
        </div>
    </div>
    <div class="col-lg-6 col-md-6">
        <div class="card kpi-card bg-gradient-orange h-100">
            <div class="d-flex justify-content-between align-items-center">
                <div>
                    <div class="kpi-title">Today's Invoices</div>
                    <h3 class="card-number">{{ number_format($todayInvoices) }}</h3>
                </div>
                <i class="fas fa-calendar-day kpi-icon position-static opacity-25" style="font-size: 60px; transform: none;"></i>
            </div>
        </div>
    </div>
    <div class="col-lg-6 col-md-6">
        <div class="card kpi-card bg-gradient-green h-100">
            <div class="d-flex justify-content-between align-items-center">
                <div>
                    <div class="kpi-title">Total Sales</div>
                    <h3 class="card-number">₹{{ number_format($totalSales, 2) }}</h3>
                </div>
                <i class="fas fa-rupee-sign kpi-icon position-static opacity-25" style="font-size: 60px; transform: none;"></i>
            </div>
        </div>
    </div>
</div>

<div class="row mb-4 g-4">
    <!-- Quick Actions -->
    <div class="col-12 mb-2">
        <div class="d-flex gap-3 flex-wrap">
            <a href="{{ route('invoices.create') }}" class="btn btn-primary btn-lg shadow-sm px-4 rounded-pill">
                <i class="fas fa-plus-circle"></i> Create New Invoice
            </a>
            <a href="{{ route('customers.create') }}" class="btn btn-secondary btn-lg shadow-sm px-4 rounded-pill bg-white border">
                <i class="fas fa-user-plus text-primary"></i> Add Customer
            </a>
        </div>
    </div>

    <!-- Charts -->
    <div class="col-lg-8">
        <div class="card h-100">
            <div class="card-header border-0 pb-0 bg-white">
                <h5 class="mb-0 fw-bold">Revenue Analytics</h5>
            </div>
            <div class="card-body">
                <div style="height: 350px;"><canvas id="salesChart"></canvas></div>
            </div>
        </div>
    </div>
    <div class="col-lg-4">
        <div class="card h-100">
            <div class="card-header border-0 pb-0 bg-white">
                <h5 class="mb-0 fw-bold">Invoice Trends</h5>
            </div>
            <div class="card-body">
                <div style="height: 350px;"><canvas id="invoiceChart"></canvas></div>
            </div>
        </div>
    </div>
</div>

<div class="row g-4">
    <div class="col-lg-6">
        <div class="card border-0 shadow-sm h-100">
            <div class="card-header bg-white border-0 d-flex justify-content-between align-items-center pt-4 pb-2">
                <h5 class="mb-0 fw-bold">Recent Customers</h5>
                <a href="{{ route('customers.index') }}" class="btn btn-sm btn-light text-primary fw-bold rounded-pill px-3">View All</a>
            </div>
            <div class="card-body p-0">
                <div class="table-responsive border-0">
                    <table class="table table-borderless table-hover mb-0">
                        <thead class="bg-light">
                            <tr>
                                <th class="ps-4">Customer</th>
                                <th>Mobile</th>
                                <th>City</th>
                            </tr>
                        </thead>
                        <tbody>
                            @forelse($recentCustomers as $customer)
                            <tr>
                                <td class="ps-4 fw-semibold text-dark">{{ $customer->customer_name }}</td>
                                <td><span class="badge bg-light text-dark border">{{ $customer->mobile }}</span></td>
                                <td class="text-muted">{{ $customer->city ?? '-' }}</td>
                            </tr>
                            @empty
                            <tr><td colspan="3" class="text-center py-4 text-muted">No recent customers.</td></tr>
                            @endforelse
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>

    <div class="col-lg-6">
        <div class="card border-0 shadow-sm h-100">
            <div class="card-header bg-white border-0 d-flex justify-content-between align-items-center pt-4 pb-2">
                <h5 class="mb-0 fw-bold">Recent Invoices</h5>
                <a href="{{ route('invoices.index') }}" class="btn btn-sm btn-light text-primary fw-bold rounded-pill px-3">View All</a>
            </div>
            <div class="card-body p-0">
                <div class="table-responsive border-0">
                    <table class="table table-borderless table-hover mb-0">
                        <thead class="bg-light">
                            <tr>
                                <th class="ps-4">Invoice No</th>
                                <th>Customer</th>
                                <th class="text-end pe-4">Amount</th>
                            </tr>
                        </thead>
                        <tbody>
                            @forelse($recentInvoices as $invoice)
                            <tr>
                                <td class="ps-4"><span class="badge bg-primary bg-opacity-10 text-primary px-2 py-1">{{ $invoice->invoice_no }}</span></td>
                                <td class="fw-medium text-dark">{{ $invoice->customer->customer_name }}</td>
                                <td class="text-end pe-4 fw-bold text-success">₹{{ number_format($invoice->grand_total, 2) }}</td>
                            </tr>
                            @empty
                            <tr><td colspan="3" class="text-center py-4 text-muted">No recent invoices.</td></tr>
                            @endforelse
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script>
document.addEventListener("DOMContentLoaded", function() {
    Chart.defaults.font.family = "'Inter', sans-serif";
    Chart.defaults.color = '#64748B';

    const months = {!! json_encode($months) !!};
    const salesData = {!! json_encode($salesData) !!};
    const invoiceCountData = {!! json_encode($invoiceCountData) !!};

    // Sales Chart
    new Chart(document.getElementById('salesChart').getContext('2d'), {
        type: 'bar',
        data: {
            labels: months,
            datasets: [{
                label: 'Revenue (₹)',
                data: salesData,
                backgroundColor: 'rgba(106, 27, 154, 0.8)',
                borderRadius: 8,
                barThickness: 30
            }]
        },
        options: { 
            responsive: true, 
            maintainAspectRatio: false,
            plugins: { legend: { display: false } },
            scales: {
                y: { beginAtZero: true, grid: { borderDash: [5, 5], color: '#E2E8F0' }, border: { display: false } },
                x: { grid: { display: false }, border: { display: false } }
            }
        }
    });

    // Invoice Count Chart
    new Chart(document.getElementById('invoiceChart').getContext('2d'), {
        type: 'line',
        data: {
            labels: months,
            datasets: [{
                label: 'Invoices',
                data: invoiceCountData,
                borderColor: '#FFD54F',
                backgroundColor: 'rgba(255, 213, 79, 0.1)',
                borderWidth: 3,
                tension: 0.4,
                fill: true,
                pointBackgroundColor: '#FFFFFF',
                pointBorderColor: '#FFD54F',
                pointBorderWidth: 2,
                pointRadius: 4
            }]
        },
        options: { 
            responsive: true, 
            maintainAspectRatio: false,
            plugins: { legend: { display: false } },
            scales: {
                y: { beginAtZero: true, grid: { borderDash: [5, 5], color: '#E2E8F0' }, border: { display: false }, ticks: { stepSize: 1 } },
                x: { grid: { display: false }, border: { display: false } }
            }
        }
    });
});
</script>
@endpush