@extends('layouts.app')

@section('title', 'Membaca: ' . $book->title)

@section('content')
<div class="bg-gray-50/50 min-h-screen py-10">
    <div class="max-w-4xl mx-auto px-4 sm:px-6">
        
        <div class="bg-white rounded-2xl shadow-sm border border-gray-100 p-5 mb-8 transition duration-300">
            <div class="flex flex-col sm:flex-row justify-between items-start sm:items-center gap-4">
                <div class="space-y-1 min-w-0">
                    <div class="flex items-center gap-2 text-xs text-gray-400 font-medium">
                        <a href="{{ route('home') }}" class="hover:text-blue-600 transition">Beranda</a>
                        <svg class="w-2.5 h-2.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"/>
                        </svg>
                        <span class="truncate max-w-[180px]">{{ $book->title }}</span>
                    </div>
                    <h1 class="font-bold text-gray-900 text-base md:text-lg truncate tracking-tight">
                        {{ $book->title }}
                    </h1>
                    <p class="text-xs font-semibold text-blue-600 bg-blue-50 px-2.5 py-0.5 rounded-md inline-block">
                        Bab {{ $currentChapter->chapter_number ?? '1' }}: {{ $currentChapter->title ?? 'Materi Utama' }}
                    </p>
                </div>

                <a href="{{ route('home') }}" class="inline-flex items-center gap-1.5 px-3.5 py-2 border border-gray-200 text-xs font-medium text-gray-600 rounded-xl bg-white hover:bg-gray-50 transition shrink-0 shadow-sm">
                    <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16M4 18h16"/>
                    </svg>
                    Semua Bab
                </a>
            </div>
        </div>

        <div class="bg-white rounded-3xl shadow-sm border border-gray-100 p-6 sm:p-10 md:p-12 mb-8">
            <div class="text-center mb-10 pb-6 border-b border-gray-100">
                <span class="text-xs font-bold text-blue-600 uppercase tracking-widest block mb-2">Materi Pembelajaran</span>
                <h2 class="text-2xl md:text-3xl font-extrabold text-gray-800 leading-tight tracking-tight max-w-2xl mx-auto">
                    {{ $currentChapter->title ?? $book->title }}
                </h2>
            </div>

            <div class="prose prose-blue max-w-none text-gray-700 leading-relaxed text-sm md:text-base space-y-6">
                @if(isset($currentChapter) && $currentChapter->content)
                    {!! nl2br(e($currentChapter->content)) !!}
                @else
                    {{-- Fallback jika isi buku diletakkan langsung di tabel books --}}
                    {!! nl2br(e($book->description ?? $book->content ?? 'Konten materi belum diunggah atau masih kosong.')) !!}
                @endif
            </div>
        </div>

        <div class="flex flex-col sm:flex-row justify-between gap-4 items-center">
            
            @if(isset($prevChapter) && $prevChapter)
                <a href="{{ route('book.read', [$book->slug, $prevChapter->chapter_number]) }}" 
                   class="inline-flex items-center gap-2.5 px-5 py-3 bg-white border border-gray-200 text-gray-700 font-semibold rounded-xl hover:bg-gray-50 hover:border-gray-300 transition shadow-sm text-xs w-full sm:w-auto justify-center sm:justify-start">
                    <svg class="w-4 h-4 text-gray-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"/>
                    </svg>
                    <div class="text-left">
                        <span class="text-[10px] text-gray-400 block font-normal uppercase tracking-wider">Sebelumnya</span>
                        <span class="block truncate max-w-[160px]">Bab {{ $prevChapter->chapter_number }}</span>
                    </div>
                </a>
            @else
                <div class="hidden sm:block w-1"></div> {{-- Spacer --}}
            @endif
            
            @if(isset($nextChapter) && $nextChapter)
                <a href="{{ route('book.read', [$book->slug, $nextChapter->chapter_number]) }}" 
                   class="inline-flex items-center justify-between sm:justify-end gap-2.5 px-6 py-3 bg-blue-600 text-white font-semibold rounded-xl hover:bg-blue-700 transition shadow-md shadow-blue-600/10 text-xs w-full sm:w-auto text-right">
                    <div class="text-right">
                        <span class="text-[10px] text-blue-200 block font-normal uppercase tracking-wider">Selanjutnya</span>
                        <span class="block truncate max-w-[160px]">Bab {{ $nextChapter->chapter_number }}</span>
                    </div>
                    <svg class="w-4 h-4 text-blue-100" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"/>
                    </svg>
                </a>
            @else
                <a href="{{ route('home') }}" 
                   class="inline-flex items-center gap-2 px-6 py-3 bg-green-600 text-white font-semibold rounded-xl hover:bg-green-700 transition shadow-md shadow-green-600/10 text-xs w-full sm:w-auto justify-center">
                    <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"/>
                    </svg>
                    Selesai Belajar
                </a>
            @endif
            
        </div>

    </div>
</div>
@endsection