@extends('layouts.app')

@section('title', 'Add New Subject')

@section('content')
<div class="min-h-screen bg-gray-50 py-8">
    <div class="max-w-2xl mx-auto px-4 sm:px-6 lg:px-8">
        <!-- Header -->
        <div class="mb-8">
            <div class="flex items-center">
                <a href="{{ route('subjects.index') }}" 
                   class="inline-flex items-center text-sm font-medium text-gray-500 hover:text-gray-700 mr-4">
                    <svg class="w-4 h-4 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10 19l-7-7m0 0l7-7m-7 7h18"></path>
                    </svg>
                    Back to Subjects
                </a>
            </div>
        </div>

        <div class="mb-8">
            <div class="flex items-center">
                <div>
                    <h1 class="text-3xl font-bold text-gray-900">Add New Subject</h1>
                    <p class="mt-2 text-sm text-gray-600">Create a new subject to add to your curriculum</p>
                </div>
            </div>
        </div>

        <!-- Form Card -->
        <div class="bg-white shadow-sm rounded-lg overflow-hidden">
            <div class="px-6 py-4 border-b border-gray-200 bg-gray-50">
                <h2 class="text-lg font-medium text-gray-900">Subject Information</h2>
                <p class="mt-1 text-sm text-gray-500">Fill in the details below to create a new subject</p>
            </div>

            <form action="{{ route('subjects.store') }}" method="POST" class="p-6">
                @csrf

                <!-- Name Field -->
                <div class="space-y-2">
                    <label for="name" class="block text-sm font-medium text-gray-700">
                        Subject Name <span class="text-red-500">*</span>
                    </label>
                    <div class="relative">
                        <input type="text" 
                               id="name" 
                               name="name" 
                               value="{{ old('name') }}"
                               placeholder="Enter subject name (e.g., Mathematics, Science, History)"
                               class="block w-full px-4 py-3 border border-gray-300 rounded-lg shadow-sm placeholder-gray-400 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition duration-150 ease-in-out @error('name') border-red-300 focus:ring-red-500 focus:border-red-500 @enderror"
                               required
                               autofocus>
                        <div class="absolute inset-y-0 right-0 pr-3 flex items-center pointer-events-none">
                            <svg class="h-5 w-5 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253"></path>
                            </svg>
                        </div>
                    </div>
                    
                    @error('name')
                        <div class="flex items-center mt-1 text-sm text-red-600">
                            <svg class="w-4 h-4 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"></path>
                            </svg>
                            {{ $message }}
                        </div>
                    @enderror
                    
                    <p class="text-xs text-gray-500 mt-1">
                        Choose a clear and descriptive name for the subject
                    </p>
                </div>

                <!-- Form Actions -->
                <div class="mt-8 pt-6 border-t border-gray-200 flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-3">
                    <a href="{{ route('subjects.index') }}" 
                       class="mt-3 sm:mt-0 inline-flex justify-center items-center px-4 py-3 border border-gray-300 shadow-sm text-sm font-medium rounded-lg text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500 transition duration-150 ease-in-out">
                        <svg class="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"></path>
                        </svg>
                        Cancel
                    </a>
                    <button type="submit" 
                            class="inline-flex justify-center items-center px-6 py-3 border border-transparent text-sm font-medium rounded-lg shadow-sm text-white bg-blue-600 hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500 transition duration-150 ease-in-out">
                        <svg class="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"></path>
                        </svg>
                        Create Subject
                    </button>
                </div>
            </form>
        </div>

        <!-- Help Section -->
        <div class="mt-8 bg-blue-50 rounded-lg p-6">
            <div class="flex">
                <div class="flex-shrink-0">
                    <svg class="h-5 w-5 text-blue-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"></path>
                    </svg>
                </div>
                <div class="ml-3">
                    <h3 class="text-sm font-medium text-blue-800">Tips for creating subjects</h3>
                    <div class="mt-2 text-sm text-blue-700">
                        <ul class="list-disc list-inside space-y-1">
                            <li>Use clear and descriptive names</li>
                            <li>Consider the curriculum structure</li>
                            <li>Keep names concise but meaningful</li>
                        </ul>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<!-- Success Modal (Optional - for better UX) -->
@if(session('success'))
<div id="successModal" class="fixed inset-0 bg-gray-600 bg-opacity-50 overflow-y-auto h-full w-full flex items-center justify-center z-50">
    <div class="relative bg-white rounded-lg shadow-xl max-w-md mx-auto p-6">
        <div class="flex items-center justify-center w-12 h-12 mx-auto bg-green-100 rounded-full">
            <svg class="w-6 h-6 text-green-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"></path>
            </svg>
        </div>
        <div class="mt-3 text-center">
            <h3 class="text-lg font-medium text-gray-900">Success!</h3>
            <div class="mt-2 px-4">
                <p class="text-sm text-gray-500">{{ session('success') }}</p>
            </div>
        </div>
        <div class="mt-5 text-center">
            <button onclick="closeModal()" class="inline-flex justify-center px-4 py-2 text-sm font-medium text-blue-900 bg-blue-100 border border-transparent rounded-md hover:bg-blue-200 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500">
                Continue
            </button>
        </div>
    </div>
</div>

<script>
function closeModal() {
    document.getElementById('successModal').style.display = 'none';
    window.location.href = "{{ route('subjects.index') }}";
}

// Auto redirect after 3 seconds
setTimeout(() => {
    if (document.getElementById('successModal')) {
        closeModal();
    }
}, 3000);
</script>
@endif

<style>
/* Custom focus styles */
input:focus {
    outline: none;
    ring: 2px;
}

/* Smooth transitions */
.transition {
    transition: all 0.2s ease-in-out;
}

/* Custom placeholder color */
.placeholder-gray-400::placeholder {
    color: #9CA3AF;
}

/* Error state animation */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.border-red-300 {
    animation: shake 0.5s ease-in-out;
}
</style>

<script>
// Real-time validation
document.addEventListener('DOMContentLoaded', function() {
    const nameInput = document.getElementById('name');
    const form = document.querySelector('form');
    
    // Real-time character count and validation
    nameInput.addEventListener('input', function() {
        const value = this.value;
        const isValid = value.length >= 2 && value.length <= 255;
        
        if (value.length > 0) {
            if (isValid) {
                this.classList.remove('border-red-300', 'focus:ring-red-500', 'focus:border-red-500');
                this.classList.add('border-green-300', 'focus:ring-green-500', 'focus:border-green-500');
            } else {
                this.classList.remove('border-green-300', 'focus:ring-green-500', 'focus:border-green-500');
                this.classList.add('border-red-300', 'focus:ring-red-500', 'focus:border-red-500');
            }
        } else {
            this.classList.remove('border-red-300', 'border-green-300', 'focus:ring-red-500', 'focus:ring-green-500', 'focus:border-red-500', 'focus:border-green-500');
            this.classList.add('border-gray-300', 'focus:ring-blue-500', 'focus:border-blue-500');
        }
    });
    
    // Form submission enhancement
    form.addEventListener('submit', function(e) {
        const nameValue = nameInput.value.trim();
        
        if (!nameValue) {
            e.preventDefault();
            nameInput.focus();
            return false;
        }
    });
});
</script>
@endsection