@extends('layouts.app')

@section('titulo', 'Inventario · Stock Actual')

@section('contenido')

<style>
/* Estilos principales para replicar el diseño de los otros módulos */
.table-premium {
    border-collapse: collapse;
    width: 100%;
}

.table-premium thead {
    background: #f8fafc;
    text-transform: uppercase;
    font-size: .7rem;
    color: #64748b;
    letter-spacing: 0.05em;
}

.table-premium thead th {
    padding: 10px 12px;
    border: 1px solid #e2e8f0;
    font-weight: 600;
    text-align: left;
}

.table-premium tbody td {
    padding: 10px 12px;
    border: 1px solid #e2e8f0;
    vertical-align: middle;
}

.table-premium tbody tr:hover {
    background: #f8fafc;
}

/* Estilos para el contenedor de la tabla */
.table-container {
    background: white;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

/* Header */
.header-section {
    background: white;
    border-radius: 12px;
    padding: 16px 20px;
    border: 1px solid #e5e7eb;
    margin-bottom: 20px;
}

.header-icon {
    width: 36px;
    height: 36px;
    background: #dbeafe;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #2563eb;
}

.header-icon svg {
    width: 18px;
    height: 18px;
}

/* Filtros */
.filters-section {
    background: white;
    border-radius: 12px;
    padding: 16px 20px;
    border: 1px solid #e5e7eb;
    margin-bottom: 20px;
}

.search-input {
    position: relative;
}

.search-input input {
    width: 100%;
    padding: 8px 16px 8px 36px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 0.875rem;
    background: #fafbfc;
}

.search-input input:focus {
    outline: none;
    border-color: #2563eb;
    background: white;
}

.search-input .search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    width: 16px;
    height: 16px;
}

.filter-select {
    padding: 8px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 0.875rem;
    background: #fafbfc;
    color: #1e293b;
    width: 100%;
}

.filter-select:focus {
    outline: none;
    border-color: #2563eb;
}

.btn-filter {
    background: #0f172a;
    color: white;
    padding: 8px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    border: none;
    cursor: pointer;
}

.btn-filter:hover {
    background: #1e293b;
}

.btn-clear {
    background: white;
    color: #475569;
    padding: 8px 20px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.875rem;
    border: 1px solid #e2e8f0;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.btn-clear:hover {
    background: #f8fafc;
}

/* KPI Cards */
.kpi-card {
    background: white;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    padding: 16px 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.kpi-card .kpi-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #94a3b8;
}

.kpi-card .kpi-value {
    margin-top: 4px;
    font-size: 1.5rem;
    font-weight: 800;
    color: #0f172a;
}

.kpi-card .kpi-value.brand {
    color: #2563eb;
}

.kpi-card .kpi-sub {
    font-size: 0.7rem;
    color: #94a3b8;
    margin-top: 4px;
}

/* Stock badges */
.stock-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    min-width: 28px;
}

.stock-badge-low {
    background: #fef3c7;
    color: #92400e;
}

.stock-badge-normal {
    font-weight: 700;
    color: #0f172a;
}

/* Acciones y botones */
.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.875rem;
    border: 1px solid #e2e8f0;
    background: white;
    color: #475569;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-outline:hover {
    background: #f8fafc;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    border: none;
    background: #2563eb;
    color: white;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background: #1d4ed8;
    color: white;
}

/* Paginación */
.pagination-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-top: 1px solid #f1f5f9;
    font-size: 0.8rem;
    color: #64748b;
}

.breadcrumb {
    font-size: 0.7rem;
    color: #94a3b8;
    margin-bottom: 2px;
}

.filters-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 12px;
    align-items: end;
}

.filters-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
}

@media (max-width: 768px) {
    .filters-row {
        grid-template-columns: 1fr;
    }
    .filters-actions {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }
}

/* Anchos fijos para las columnas */
.col-producto { width: 28%; }
.col-categoria { width: 17%; }
.col-stock { width: 12%; }
.col-minimo { width: 12%; }
.col-costo { width: 15%; }
.col-valor { width: 16%; }
</style>

<div class="max-w-[1650px] mx-auto space-y-4 px-4 sm:px-6">

    {{-- HEADER --}}
    <div class="header-section">
        <div class="flex flex-wrap items-center justify-between gap-3">
            <div>
                <div class="breadcrumb">Logística & Inventario</div>
                <div class="flex items-center gap-3 mt-1">
                    <div class="header-icon">
                        <svg fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
                            <path stroke-linecap="round" stroke-linejoin="round" d="M20 7L12 3 4 7m16 0v10l-8 4m8-14-8 4m0 10-8-4V7m8 14V11M4 7l8 4"/>
                        </svg>
                    </div>
                    <div>
                        <h1 class="text-xl font-bold text-slate-800">Stock Actual</h1>
                        <p class="text-sm text-slate-400">Consulta el stock disponible por producto y almacén.</p>
                    </div>
                </div>
            </div>

            <div class="flex gap-2">
                <a href="{{ route('inventario.lotes') }}" class="btn-outline">
                    Lotes y Vencimientos
                </a>
                <a href="{{ route('inventario.ajustes') }}" class="btn-primary">
                    Ajustar stock
                </a>
            </div>
        </div>
    </div>

    {{-- KPI CARDS --}}
    <div class="grid grid-cols-1 sm:grid-cols-3 gap-4">
        <div class="kpi-card">
            <p class="kpi-label">Unidades en stock</p>
            <p class="kpi-value">{{ number_format($unidades) }}</p>
            <p class="kpi-sub">
                @if ($almacenId)
                    Almacén seleccionado
                @else
                    Todos los almacenes
                @endif
            </p>
        </div>

        <div class="kpi-card">
            <p class="kpi-label">Valor a costo</p>
            <p class="kpi-value">S/ {{ number_format($valorCosto, 2) }}</p>
        </div>

        <div class="kpi-card">
            <p class="kpi-label">Valor a precio de venta</p>
            <p class="kpi-value brand">S/ {{ number_format($valorVenta, 2) }}</p>
        </div>
    </div>

    {{-- FILTROS --}}
    <form method="GET" action="{{ route('inventario.index') }}" class="filters-section">
        <div class="filters-row">
            <div class="search-input">
                <svg class="search-icon" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
                    <path stroke-linecap="round" stroke-linejoin="round" d="M21 21l-5.197-5.197m0 0A7.5 7.5 0 105.196 5.196a7.5 7.5 0 0010.607 10.607z"/>
                </svg>
                <input type="text" name="q" value="{{ $buscar }}" placeholder="Buscar producto o código...">
            </div>

            <select name="categoria" class="filter-select">
                <option value="">Todas las categorías</option>
                @foreach ($categorias as $cat)
                    <option value="{{ $cat->id }}" @selected($categoriaId == $cat->id)>
                        {{ $cat->nombre }}
                    </option>
                @endforeach
            </select>

            <select name="almacen" class="filter-select">
                <option value="">Todos los almacenes</option>
                @foreach ($almacenes as $almacen)
                    <option value="{{ $almacen->id }}" @selected($almacenId == $almacen->id)>
                        {{ $almacen->nombre }}
                    </option>
                @endforeach
            </select>
        </div>

        <div class="filters-actions">
            <div class="text-xs text-slate-400">
                @if ($almacenId)
                    Mostrando stock del almacén seleccionado.
                @else
                    Mostrando stock consolidado de todos los almacenes.
                @endif
            </div>

            <div class="flex gap-2">
                <a href="{{ route('inventario.index') }}" class="btn-clear">Limpiar</a>
                <button type="submit" class="btn-filter">Filtrar</button>
            </div>
        </div>
    </form>

    {{-- TABLA --}}
    <div class="table-container">
        <div class="overflow-x-auto">
            <table class="table-premium">
                <thead>
                    <tr>
                        <th class="col-producto">PRODUCTO</th>
                        <th class="col-categoria">CATEGORÍA</th>
                        <th class="col-stock text-center">STOCK</th>
                        <th class="col-minimo text-center">MÍNIMO</th>
                        <th class="col-costo text-right">COSTO</th>
                        <th class="col-valor text-right">VALOR (VENTA)</th>
                    </tr>
                </thead>
                <tbody>
                    @forelse ($productos as $p)
                        @php
                            $stockActual = (int) ($p->stock_actual ?? 0);
                            $stockMinimo = (int) ($p->stock_minimo_actual ?? 0);
                            $valorProducto = $stockActual * (float) $p->precio_venta;
                        @endphp

                        <tr class="hover:bg-slate-50/60">
                            <td class="col-producto">
                                <div class="font-medium text-slate-700">
                                    {{ $p->nombre }}
                                </div>
                                @if ($p->codigo_barras)
                                    <div class="text-xs text-slate-400 mt-0.5">
                                        Código: {{ $p->codigo_barras }}
                                    </div>
                                @endif
                            </td>

                            <td class="col-categoria text-slate-500">
                                {{ $p->categoria?->nombre ?? '—' }}
                            </td>

                            <td class="col-stock text-center">
                                @if ($stockActual <= $stockMinimo)
                                    <span class="stock-badge stock-badge-low">
                                        {{ number_format($stockActual) }} ⚠
                                    </span>
                                @else
                                    <span class="stock-badge stock-badge-normal">
                                        {{ number_format($stockActual) }}
                                    </span>
                                @endif
                            </td>

                            <td class="col-minimo text-center text-slate-400">
                                {{ number_format($stockMinimo) }}
                            </td>

                            <td class="col-costo text-right text-slate-500">
                                S/ {{ number_format((float) $p->precio_compra, 2) }}
                            </td>

                            <td class="col-valor text-right font-semibold text-slate-700">
                                S/ {{ number_format($valorProducto, 2) }}
                            </td>
                        </tr>
                    @empty
                        <tr>
                            <td colspan="6" class="text-center py-10 text-slate-400">
                                No se encontraron productos.
                            </td>
                        </tr>
                    @endforelse
                </tbody>
            </table>
        </div>

        {{-- PAGINACIÓN --}}
        @if ($productos->hasPages())
            <div class="pagination-bar">
                <div class="flex items-center gap-3">
                    <span>Mostrando {{ $productos->firstItem() ?? 0 }} a {{ $productos->lastItem() ?? 0 }} de {{ $productos->total() }} registros</span>
                    <select onchange="window.location.href = this.value">
                        @foreach([10, 25, 50, 100] as $perPage)
                            <option value="{{ request()->fullUrlWithQuery(['per_page' => $perPage]) }}"
                                    @selected(request('per_page', 10) == $perPage)>
                                {{ $perPage }}
                            </option>
                        @endforeach
                    </select>
                </div>
                <div>
                    {{ $productos->links() }}
                </div>
            </div>
        @endif
    </div>
</div>

@endsection