@extends('layouts.app')
@section('titulo', 'Lotes y Vencimientos')

@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;
}

.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;
}

.filter-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #94a3b8;
    margin-bottom: 4px;
}

.btn-filter {
    background: #0f172a;
    color: white;
    padding: 8px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    border: none;
    cursor: pointer;
    height: 42px;
}

.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;
    height: 42px;
}

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

.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;
}

/* Badges de estado */
.status-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
}

.status-expired {
    background: #fee2e2;
    color: #991b1b;
}

.status-warning {
    background: #fee2e2;
    color: #dc2626;
}

.status-soon {
    background: #fef3c7;
    color: #92400e;
}

.status-valid {
    background: #dcfce7;
    color: #166534;
}

.status-no-date {
    background: #f1f5f9;
    color: #64748b;
}

/* Badge de almacén */
.warehouse-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: 8px;
    background: #f1f5f9;
    font-size: 0.7rem;
    font-weight: 500;
    color: #475569;
}

/* Badge de stock */
.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-zero {
    background: #fee2e2;
    color: #991b1b;
}

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

/* 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: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: end;
}

.filters-row .filter-group {
    flex: 1;
    min-width: 200px;
}

.filters-row .filter-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

@media (max-width: 768px) {
    .filters-row .filter-group {
        flex: 1 1 100%;
    }
    .filters-row .filter-actions {
        flex: 1 1 100%;
    }
}

/* Empty state */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.empty-state .empty-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #f1f5f9;
    color: #94a3b8;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.empty-state .empty-icon svg {
    width: 24px;
    height: 24px;
}

/* Anchos fijos para las columnas */
.col-producto { width: 22%; }
.col-categoria { width: 14%; }
.col-almacen { width: 13%; }
.col-lote { width: 12%; }
.col-stock { width: 10%; }
.col-vencimiento { width: 12%; }
.col-estado { width: 17%; }
</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 / 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">Lotes y Vencimientos</h1>
                        <p class="text-sm text-slate-400">Control de lotes ordenado por fecha de vencimiento más próxima (FEFO).</p>
                    </div>
                </div>
            </div>

            <div class="flex gap-2">
                <a href="{{ route('inventario.index', ['almacen' => $almacenId]) }}" class="btn-outline">
                    ← Stock Actual
                </a>
                <a href="{{ route('inventario.ajustes', ['almacen' => $almacenId]) }}" class="btn-primary">
                    Ajustar stock
                </a>
            </div>
        </div>
    </div>

    {{-- FILTROS --}}
    <form method="GET" action="{{ route('inventario.lotes') }}" class="filters-section">
        <div class="filters-row">
            <div class="filter-group">
                <label class="filter-label">Almacén</label>
                <select name="almacen" class="filter-select">
                    <option value="">Todos los almacenes</option>
                    @foreach ($almacenes as $almacen)
                        <option value="{{ $almacen->id }}" @selected($almacenId == $almacen->id)>
                            {{ $almacen->nombre }}
                            @if ($almacen->tipo)
                                — {{ ucfirst($almacen->tipo) }}
                            @endif
                        </option>
                    @endforeach
                </select>
            </div>

            <div class="filter-actions">
                <button type="submit" class="btn-filter">Filtrar</button>
                @if ($almacenId)
                    <a href="{{ route('inventario.lotes') }}" class="btn-clear">Limpiar</a>
                @endif
            </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-almacen">ALMACÉN</th>
                        <th class="col-lote">LOTE</th>
                        <th class="col-stock text-center">STOCK</th>
                        <th class="col-vencimiento">VENCIMIENTO</th>
                        <th class="col-estado text-center">ESTADO</th>
                    </tr>
                </thead>
                <tbody>
                    @forelse ($productos as $p)
                        @php
                            $fechaVencimiento = $p->fecha_vencimiento
                                ? \Carbon\Carbon::parse($p->fecha_vencimiento)
                                : null;

                            $dias = $fechaVencimiento
                                ? (int) $hoy->diffInDays($fechaVencimiento, false)
                                : null;
                        @endphp

                        <tr class="hover:bg-slate-50/60">
                            <td class="col-producto">
                                <div class="font-medium text-slate-700">
                                    {{ $p->nombre }}
                                </div>
                                @if (!empty($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-almacen">
                                @if (!empty($p->almacen_nombre))
                                    <span class="warehouse-badge">
                                        {{ $p->almacen_nombre }}
                                    </span>
                                @else
                                    <span class="text-slate-400">—</span>
                                @endif
                            </td>

                            <td class="col-lote text-slate-500 font-mono">
                                {{ $p->lote ?: '—' }}
                            </td>

                            <td class="col-stock text-center">
                                @if ((int) $p->stock <= 0)
                                    <span class="stock-badge stock-badge-zero">0</span>
                                @else
                                    <span class="stock-badge stock-badge-normal">
                                        {{ number_format((int) $p->stock) }}
                                    </span>
                                @endif
                            </td>

                            <td class="col-vencimiento text-slate-600">
                                @if ($fechaVencimiento)
                                    {{ $fechaVencimiento->format('d/m/Y') }}
                                @else
                                    <span class="text-slate-400">—</span>
                                @endif
                            </td>

                            <td class="col-estado text-center">
                                @if ($dias === null)
                                    <span class="status-badge status-no-date">Sin fecha</span>
                                @elseif ($dias < 0)
                                    <span class="status-badge status-expired">Vencido hace {{ abs($dias) }} d</span>
                                @elseif ($dias <= 30)
                                    <span class="status-badge status-warning">Vence en {{ $dias }} d</span>
                                @elseif ($dias <= 60)
                                    <span class="status-badge status-soon">Vence en {{ $dias }} d</span>
                                @else
                                    <span class="status-badge status-valid">Vigente</span>
                                @endif
                            </td>
                        </tr>
                    @empty
                        <tr>
                            <td colspan="7" class="py-8">
                                <div class="empty-state">
                                    <div class="empty-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>
                                    <p class="font-medium text-slate-500">No hay lotes registrados.</p>
                                    <p class="text-xs text-slate-400 mt-1">No se encontraron productos con fecha de vencimiento y stock disponible.</p>
                                </div>
                            </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