@php
    use App\Filament\Resources\ReservationResource;
    use App\Models\Reservation;
    use Illuminate\Support\Carbon;

    $view = in_array(request('view'), ['month', 'week', 'day'], true) ? request('view') : 'week';
    try {
        $cursor = Carbon::parse(request('date', 'today'))->startOfDay();
    } catch (\Throwable $e) {
        $cursor = Carbon::today();
    }

    $statusColor = fn (string $s) => match ($s) {
        Reservation::STATUS_ACCEPTED => '#3f9b52',
        Reservation::STATUS_DECLINED => '#b5453b',
        default => '#c08a2d',
    };

    if ($view === 'month') {
        $start = $cursor->copy()->startOfMonth()->startOfWeek(Carbon::MONDAY);
        $end = $cursor->copy()->endOfMonth()->endOfWeek(Carbon::SUNDAY);
        $rangeLabel = $cursor->format('F Y');
        $unit = 'month';
    } elseif ($view === 'week') {
        $start = $cursor->copy()->startOfWeek(Carbon::MONDAY);
        $end = $cursor->copy()->endOfWeek(Carbon::SUNDAY);
        $rangeLabel = $start->format('d M').' – '.$end->format('d M Y');
        $unit = 'week';
    } else {
        $start = $cursor->copy();
        $end = $cursor->copy();
        $rangeLabel = $cursor->format('l, d F Y');
        $unit = 'day';
    }

    $byDate = Reservation::with('experience')
        ->whereBetween('reservation_date', [$start->toDateString(), $end->toDateString()])
        ->orderBy('reservation_time')
        ->get()
        ->groupBy(fn ($r) => $r->reservation_date->toDateString());

    $link = fn (string $v, string $d) => url()->current().'?view='.$v.'&date='.$d;
    $prev = $cursor->copy()->sub($unit, 1)->toDateString();
    $next = $cursor->copy()->add($unit, 1)->toDateString();
    $today = Carbon::today()->toDateString();

    $navBtn = 'display:inline-flex;align-items:center;justify-content:center;padding:.4rem .7rem;border:1px solid var(--gray-200,#e5e7eb);border-radius:.5rem;font-size:.8rem;text-decoration:none;color:inherit;background:var(--gray-50,#f9fafb);';
    $chip = 'display:block;margin-top:3px;padding:2px 6px;border-radius:5px;color:#fff;font-size:.68rem;line-height:1.3;text-decoration:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;';
@endphp

<x-filament-panels::page>
    <div style="display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.75rem;margin-bottom:1rem;">
        <div style="display:flex;gap:.4rem;align-items:center;">
            <a href="{{ $link($view, $prev) }}" style="{{ $navBtn }}">‹</a>
            <a href="{{ $link($view, $today) }}" style="{{ $navBtn }}">Today</a>
            <a href="{{ $link($view, $next) }}" style="{{ $navBtn }}">›</a>
            <strong style="margin-left:.6rem;font-size:1.05rem;">{{ $rangeLabel }}</strong>
        </div>
        <div style="display:flex;gap:.3rem;">
            @foreach(['day' => 'Day', 'week' => 'Week', 'month' => 'Month'] as $v => $label)
                <a href="{{ $link($v, $cursor->toDateString()) }}"
                   style="{{ $navBtn }}{{ $v === $view ? 'background:var(--primary-500,#d97706);color:#fff;border-color:transparent;' : '' }}">{{ $label }}</a>
            @endforeach
        </div>
    </div>

    <x-filament::section>
        @if($view === 'month')
            <div style="display:grid;grid-template-columns:repeat(7,1fr);gap:1px;background:var(--gray-200,#e5e7eb);border:1px solid var(--gray-200,#e5e7eb);border-radius:.5rem;overflow:hidden;">
                @foreach(['Mon','Tue','Wed','Thu','Fri','Sat','Sun'] as $d)
                    <div style="background:var(--gray-50,#f9fafb);padding:.5rem;text-align:center;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--gray-500,#6b7280);">{{ $d }}</div>
                @endforeach
                @php $day = $start->copy(); @endphp
                @while($day <= $end)
                    @php
                        $key = $day->toDateString();
                        $items = $byDate[$key] ?? collect();
                        $isOther = $day->month !== $cursor->month;
                        $isToday = $key === $today;
                    @endphp
                    <div style="background:var(--gray-25,#fff);min-height:110px;padding:.4rem;{{ $isOther ? 'opacity:.45;' : '' }}">
                        <div style="font-size:.78rem;font-weight:600;{{ $isToday ? 'color:#d97706;' : '' }}">{{ $day->day }}</div>
                        @foreach($items as $r)
                            <a href="{{ ReservationResource::getUrl('view', ['record' => $r->id]) }}" title="{{ $r->name }} · {{ $r->guests }} guests" style="{{ $chip }}background:{{ $statusColor($r->status) }};">{{ $r->reservation_time->format('H:i') }} {{ $r->name }}</a>
                        @endforeach
                    </div>
                    @php $day->addDay(); @endphp
                @endwhile
            </div>
        @elseif($view === 'week')
            <div style="display:grid;grid-template-columns:repeat(7,1fr);gap:1px;background:var(--gray-200,#e5e7eb);border:1px solid var(--gray-200,#e5e7eb);border-radius:.5rem;overflow:hidden;">
                @php $day = $start->copy(); @endphp
                @while($day <= $end)
                    @php $key = $day->toDateString(); $items = $byDate[$key] ?? collect(); $isToday = $key === $today; @endphp
                    <div style="background:#fff;min-height:180px;padding:.5rem;">
                        <div style="font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;{{ $isToday ? 'color:#d97706;font-weight:700;' : 'color:var(--gray-500,#6b7280);' }}">{{ $day->format('D d') }}</div>
                        @forelse($items as $r)
                            <a href="{{ ReservationResource::getUrl('view', ['record' => $r->id]) }}" style="{{ $chip }}background:{{ $statusColor($r->status) }};white-space:normal;">{{ $r->reservation_time->format('H:i') }} · {{ $r->name }} · {{ $r->guests }}p</a>
                        @empty
                            <div style="margin-top:.5rem;color:var(--gray-300,#d1d5db);font-size:.8rem;">—</div>
                        @endforelse
                    </div>
                    @php $day->addDay(); @endphp
                @endwhile
            </div>
        @else
            <div style="display:flex;flex-direction:column;gap:.5rem;">
                @php $items = $byDate[$cursor->toDateString()] ?? collect(); @endphp
                @forelse($items as $r)
                    <a href="{{ ReservationResource::getUrl('view', ['record' => $r->id]) }}" style="display:flex;align-items:center;gap:1rem;padding:.8rem 1rem;border:1px solid var(--gray-200,#e5e7eb);border-radius:.6rem;text-decoration:none;color:inherit;">
                        <span style="font-size:1.1rem;font-weight:600;min-width:56px;">{{ $r->reservation_time->format('H:i') }}</span>
                        <span style="flex:1;">{{ $r->name }} · {{ $r->guests }} guests @if($r->experience) · {{ $r->experience->slug }} @endif</span>
                        <span style="padding:2px 10px;border-radius:999px;color:#fff;font-size:.72rem;background:{{ $statusColor($r->status) }};">{{ $r->status }}</span>
                    </a>
                @empty
                    <p style="color:var(--gray-500,#6b7280);">No reservations on this day.</p>
                @endforelse
            </div>
        @endif
    </x-filament::section>
</x-filament-panels::page>