@extends('layouts.admin')
@section('title', 'Edit Kursus')
@section('header', 'Edit Kursus')

@section('content')
<style>
    :root { --navy:#0d1b2a; --gold:#b8962e; --gold-2:#d4af4f; --gold-light:#f7f0dc; --cream:#faf8f4; --cream-2:#f3efe6; --border:#e5e0d5; --muted:#6b6560; }
    .back-link { display:inline-flex; align-items:center; gap:6px; font-size:12px; color:var(--muted); text-decoration:none; margin-bottom:24px; transition:color .15s; }
    .back-link:hover { color:var(--navy); }
    .form-layout { display:grid; grid-template-columns:1fr 340px; gap:20px; align-items:start; }
    @media(max-width:960px) { .form-layout { grid-template-columns:1fr; } }
    .panel { background:#fff; border:1px solid var(--border); border-radius:16px; }
    .panel-head { padding:20px 24px 18px; border-bottom:1px solid var(--border); }
    .panel-body { padding:24px; }
    .panel-title { font-family:'Cormorant Garamond',Georgia,serif; font-size:18px; font-weight:600; color:var(--navy); }
    .field { margin-bottom:18px; }
    .field label { display:block; font-size:12px; font-weight:500; color:var(--navy); margin-bottom:6px; }
    .field label .req { color:#dc2626; margin-left:2px; }
    .field label .hint { color:var(--muted); font-weight:400; font-size:11px; margin-left:4px; }
    .el-input { width:100%; border:1px solid var(--border); border-radius:10px; padding:10px 14px; font-size:13px; color:var(--navy); background:#fff; outline:none; font-family:'Inter',sans-serif; transition:border-color .15s, box-shadow .15s; -webkit-appearance:none; }
    .el-input:focus { border-color:var(--gold-2); box-shadow:0 0 0 3px rgba(212,175,79,.1); }
    .el-input.error { border-color:#dc2626; }
    select.el-input { cursor:pointer; background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%236b6560'/%3E%3C/svg%3E"); background-repeat:no-repeat; background-position:calc(100% - 12px) center; padding-right:32px; }
    textarea.el-input { resize:vertical; min-height:100px; line-height:1.5; }
    .el-file { width:100%; border:1.5px dashed var(--border); border-radius:10px; padding:14px; font-size:13px; color:var(--navy); background:var(--cream); cursor:pointer; font-family:'Inter',sans-serif; }
    .el-file:hover { border-color:var(--gold-2); background:var(--gold-light); }
    .field-hint { font-size:11px; color:var(--muted); margin-top:5px; }
    .field-error { font-size:11px; color:#dc2626; margin-top:4px; }
    .error-box { background:#fef2f2; border:1px solid #fecaca; border-radius:12px; padding:12px 16px; margin-bottom:20px; }
    .error-box p { font-size:12px; color:#dc2626; margin-bottom:2px; }
    .toggle-field { padding:14px 16px; background:var(--cream); border-radius:12px; border:1px solid var(--border); }
    .toggle-label { display:flex; align-items:center; gap:12px; cursor:pointer; }
    .toggle-label input[type=checkbox] { width:16px; height:16px; accent-color:var(--navy); cursor:pointer; }
    .toggle-title { font-size:13px; font-weight:500; color:var(--navy); }
    .toggle-desc { font-size:11px; color:var(--muted); margin-top:2px; }
    .form-actions { display:flex; gap:10px; margin-top:14px; }
    .btn-submit { background:var(--navy); color:#fff; font-size:13px; font-weight:500; padding:10px 22px; border-radius:10px; border:none; cursor:pointer; font-family:'Inter',sans-serif; transition:opacity .15s; }
    .btn-submit:hover { opacity:.87; }
    .btn-cancel { background:var(--cream-2); color:var(--navy); font-size:13px; font-weight:500; padding:10px 20px; border-radius:10px; text-decoration:none; border:1px solid var(--border); display:inline-flex; align-items:center; transition:background .15s; }
    .btn-cancel:hover { background:#ece8de; }

    /* Thumbnail preview */
    .thumb-preview { border-radius:10px; overflow:hidden; border:1px solid var(--border); margin-bottom:10px; }
    .thumb-preview img { width:100%; height:140px; object-fit:cover; display:block; }
    .thumb-label { font-size:10px; text-transform:uppercase; letter-spacing:.12em; color:var(--muted); font-weight:600; margin-top:10px; margin-bottom:6px; }
</style>

<a href="{{ route('admin.courses.index') }}" class="back-link">
    <i class="fa fa-arrow-left" style="font-size:10px;"></i> Kembali ke Daftar Kursus
</a>

@if($errors->any())
<div class="error-box">
    @foreach($errors->all() as $err)
    <p>{{ $err }}</p>
    @endforeach
</div>
@endif

<form action="{{ route('admin.courses.update', $course) }}" method="POST" enctype="multipart/form-data">
@csrf @method('PUT')
<div class="form-layout">
    {{-- Main Form --}}
    <div>
        <div class="panel">
            <div class="panel-head">
                <div class="panel-title">Edit Informasi Kursus</div>
            </div>
            <div class="panel-body">
                <div class="field">
                    <label>Judul Kursus <span class="req">*</span></label>
                    <input type="text" name="title" value="{{ old('title', $course->title) }}"
                           class="el-input @error('title') error @enderror"
                           placeholder="Judul kursus">
                    @error('title') <div class="field-error">{{ $message }}</div> @enderror
                </div>

                <div class="field">
                    <label>Deskripsi <span class="hint">(opsional)</span></label>
                    <textarea name="description" class="el-input">{{ old('description', $course->description) }}</textarea>
                </div>

                <div style="display:grid; grid-template-columns:1fr 1fr; gap:14px;">
                    <div class="field">
                        <label>Guru <span class="req">*</span></label>
                        <select name="teacher_id" class="el-input @error('teacher_id') error @enderror">
                            @foreach($teachers as $teacher)
                            <option value="{{ $teacher->id }}"
                                {{ (old('teacher_id') ?? $course->teacher_id) == $teacher->id ? 'selected' : '' }}>
                                {{ $teacher->name }}
                            </option>
                            @endforeach
                        </select>
                        @error('teacher_id') <div class="field-error">{{ $message }}</div> @enderror
                    </div>
                    <div class="field">
                        <label>Kategori <span class="req">*</span></label>
                        <select name="category_id" class="el-input @error('category_id') error @enderror">
                            @foreach($categories as $cat)
                            <option value="{{ $cat->id }}"
                                {{ (old('category_id') ?? $course->category_id) == $cat->id ? 'selected' : '' }}>
                                {{ $cat->name }}
                            </option>
                            @endforeach
                        </select>
                        @error('category_id') <div class="field-error">{{ $message }}</div> @enderror
                    </div>
                </div>

                <div class="field">
                    <label>Thumbnail <span class="hint">(kosongkan jika tidak ingin mengubah)</span></label>
                    @if($course->thumbnail)
                    <div class="thumb-preview">
                        <img src="{{ Storage::url($course->thumbnail) }}" alt="Thumbnail saat ini">
                    </div>
                    <div class="thumb-label">Ganti Thumbnail</div>
                    @endif
                    <input type="file" name="thumbnail" accept="image/*" class="el-file">
                    <div class="field-hint">Format JPG atau PNG, maksimal 2MB</div>
                </div>

                <div class="field" style="margin-bottom:0;">
                    <div class="toggle-field">
                        <label class="toggle-label">
                            <input type="checkbox" name="is_published" value="1"
                                   {{ (old('is_published') ?? $course->is_published) ? 'checked' : '' }}>
                            <div>
                                <div class="toggle-title">Publikasikan Kursus</div>
                                <div class="toggle-desc">Kursus dapat diakses siswa jika dipublikasikan</div>
                            </div>
                        </label>
                    </div>
                </div>
            </div>
        </div>

        <div class="form-actions">
            <button type="submit" class="btn-submit">
                <i class="fa fa-floppy-disk" style="font-size:12px; margin-right:6px;"></i>Simpan Perubahan
            </button>
            <a href="{{ route('admin.courses.index') }}" class="btn-cancel">Batal</a>
        </div>
    </div>

    {{-- Sidebar --}}
    <div>
        <div class="panel">
            <div class="panel-head">
                <div class="panel-title">Pengaturan</div>
            </div>
            <div class="panel-body">
                <div class="field" style="margin-bottom:0;">
                    <label>Minimal Progress Selesai</label>
                    <div style="display:flex; align-items:center; gap:10px;">
                        <input type="number" name="progress_min"
                               value="{{ old('progress_min', $course->progress_min) }}"
                               min="0" max="100" class="el-input" style="text-align:right;">
                        <span style="font-size:13px; color:var(--muted); white-space:nowrap;">%</span>
                    </div>
                    <div class="field-hint">Persentase minimum untuk dinyatakan selesai</div>
                </div>
            </div>
        </div>

        {{-- Course Stats --}}
        <div class="panel" style="margin-top:14px;">
            <div class="panel-head">
                <div class="panel-title">Statistik Kursus</div>
            </div>
            <div style="padding:12px 20px;">
                <div style="display:flex; justify-content:space-between; padding:10px 0; border-bottom:1px solid #f5f2ec; font-size:12px;">
                    <span style="color:var(--muted);">Siswa Terdaftar</span>
                    <span style="font-weight:600; color:var(--navy);">{{ $course->enrollments_count ?? 0 }}</span>
                </div>
                <div style="display:flex; justify-content:space-between; padding:10px 0; border-bottom:1px solid #f5f2ec; font-size:12px;">
                    <span style="color:var(--muted);">Total Materi</span>
                    <span style="font-weight:600; color:var(--navy);">{{ $course->materials_count ?? 0 }}</span>
                </div>
                <div style="display:flex; justify-content:space-between; padding:10px 0; font-size:12px;">
                    <span style="color:var(--muted);">Total Tugas</span>
                    <span style="font-weight:600; color:var(--navy);">{{ $course->assignments_count ?? 0 }}</span>
                </div>
            </div>
        </div>

        <div style="margin-top:14px;">
            <a href="{{ route('admin.courses.show', $course) }}"
               style="display:flex; align-items:center; justify-content:center; gap:8px; font-size:12px; color:var(--muted); text-decoration:none; padding:10px; border:1px solid var(--border); border-radius:10px; transition:background .15s;"
               onmouseover="this.style.background='var(--cream-2)'" onmouseout="this.style.background='transparent'">
                <i class="fa fa-eye" style="font-size:11px;"></i> Lihat Detail Kursus
            </a>
        </div>
    </div>
</div>
</form>

@endsection