@extends('layouts.app')

@section('title', '註冊帳號')

@section('content')
    <div class="min-h-[calc(100vh-200px)] flex items-center justify-center px-4">
        <div class="w-full max-w-md">
            <!-- Card Container -->
            <div class="bg-white dark:bg-slate-900 rounded-2xl shadow-2xl p-8 border border-gray-100 dark:border-slate-800">
                <!-- Header -->
                <div class="text-center mb-8">
                    <div class="w-16 h-16 mx-auto mb-4 rounded-xl bg-gradient-to-br from-green-600 to-teal-600 flex items-center justify-center">
                        <svg class="w-8 h-8 text-white" fill="currentColor" viewBox="0 0 20 20">
                            <path d="M10 9a3 3 0 100-6 3 3 0 000 6zm-7 9a7 7 0 1114 0H3z"></path>
                        </svg>
                    </div>
                    <h2 class="text-3xl font-bold text-gray-900 dark:text-white">建立帳號</h2>
                    <p class="text-gray-600 dark:text-gray-400 mt-2">加入我們的考試平台</p>
                </div>

                <!-- Form -->
                <form action="{{ route('register') }}" method="POST" class="space-y-5">
                    @csrf

                    <!-- Name -->
                    <div>
                        <label for="name" class="block text-sm font-semibold text-gray-700 dark:text-gray-300 mb-2">
                            姓名
                        </label>
                        <input
                            type="text"
                            id="name"
                            name="name"
                            value="{{ old('name') }}"
                            required
                            autofocus
                            class="w-full px-4 py-3 rounded-lg border-2 border-gray-200 dark:border-slate-700 bg-gray-50 dark:bg-slate-800 text-gray-900 dark:text-white placeholder-gray-500 dark:placeholder-gray-400 focus:outline-none focus:border-green-500 dark:focus:border-green-500 transition-colors"
                            placeholder="請輸入您的姓名"
                        >
                        @error('name')
                            <p class="mt-1 text-sm text-red-600 dark:text-red-400">{{ $message }}</p>
                        @enderror
                    </div>

                    <!-- Email -->
                    <div>
                        <label for="email" class="block text-sm font-semibold text-gray-700 dark:text-gray-300 mb-2">
                            電子郵件
                        </label>
                        <input
                            type="email"
                            id="email"
                            name="email"
                            value="{{ old('email') }}"
                            required
                            class="w-full px-4 py-3 rounded-lg border-2 border-gray-200 dark:border-slate-700 bg-gray-50 dark:bg-slate-800 text-gray-900 dark:text-white placeholder-gray-500 dark:placeholder-gray-400 focus:outline-none focus:border-green-500 dark:focus:border-green-500 transition-colors"
                            placeholder="your@email.com"
                        >
                        @error('email')
                            <p class="mt-1 text-sm text-red-600 dark:text-red-400">{{ $message }}</p>
                        @enderror
                    </div>

                    <!-- Password with Toggle & Strength Indicator -->
                    <div x-data="{
                        showPassword: false,
                        password: '',
                        get hasMinLength() { return this.password.length >= 8 },
                        get hasUppercase() { return /[A-Z]/.test(this.password) },
                        get hasLowercase() { return /[a-z]/.test(this.password) },
                        get hasNumber() { return /[0-9]/.test(this.password) },
                        get hasSpecial() { return /[!@#$%^&*()_+\-=\[\]{};':&quot;\\|,.<>\/?~`]/.test(this.password) },
                        get strength() {
                            let s = 0;
                            if (this.hasMinLength) s++;
                            if (this.hasUppercase) s++;
                            if (this.hasLowercase) s++;
                            if (this.hasNumber) s++;
                            if (this.hasSpecial) s++;
                            return s;
                        },
                        get strengthLabel() {
                            if (this.password.length === 0) return '';
                            if (this.strength <= 2) return '弱';
                            if (this.strength <= 3) return '中';
                            if (this.strength <= 4) return '強';
                            return '非常強';
                        },
                        get strengthColor() {
                            if (this.strength <= 2) return 'bg-red-500';
                            if (this.strength <= 3) return 'bg-yellow-500';
                            if (this.strength <= 4) return 'bg-blue-500';
                            return 'bg-green-500';
                        },
                        get allPassed() { return this.hasMinLength && this.hasUppercase && this.hasLowercase && this.hasNumber && this.hasSpecial }
                    }">
                        <label for="reg-password" class="block text-sm font-semibold text-gray-700 dark:text-gray-300 mb-2">
                            密碼
                        </label>
                        <div class="relative">
                            <input
                                :type="showPassword ? 'text' : 'password'"
                                id="reg-password"
                                name="password"
                                x-model="password"
                                required
                                class="w-full px-4 py-3 pr-12 rounded-lg border-2 border-gray-200 dark:border-slate-700 bg-gray-50 dark:bg-slate-800 text-gray-900 dark:text-white placeholder-gray-500 dark:placeholder-gray-400 focus:outline-none focus:border-green-500 dark:focus:border-green-500 transition-colors"
                                placeholder="至少 8 個字元"
                            >
                            <button
                                type="button"
                                @click="showPassword = !showPassword"
                                class="absolute inset-y-0 right-0 flex items-center pr-3 text-gray-500 dark:text-gray-400 hover:text-gray-700 dark:hover:text-gray-200 transition-colors"
                            >
                                <svg x-show="!showPassword" class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"></path>
                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z"></path>
                                </svg>
                                <svg x-show="showPassword" x-cloak class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13.875 18.825A10.05 10.05 0 0112 19c-4.478 0-8.268-2.943-9.543-7a9.97 9.97 0 011.563-3.029m5.858.908a3 3 0 114.243 4.243M9.878 9.878l4.242 4.242M9.88 9.88l-3.29-3.29m7.532 7.532l3.29 3.29M3 3l3.59 3.59m0 0A9.953 9.953 0 0112 5c4.478 0 8.268 2.943 9.543 7a10.025 10.025 0 01-4.132 5.411m0 0L21 21"></path>
                                </svg>
                            </button>
                        </div>

                        <!-- Strength Bar -->
                        <div x-show="password.length > 0" x-transition class="mt-3">
                            <div class="flex items-center justify-between mb-1">
                                <span class="text-xs font-medium text-gray-500 dark:text-gray-400">密碼強度</span>
                                <span class="text-xs font-bold"
                                      :class="{
                                          'text-red-500': strength <= 2,
                                          'text-yellow-500': strength === 3,
                                          'text-blue-500': strength === 4,
                                          'text-green-500': strength === 5
                                      }"
                                      x-text="strengthLabel"></span>
                            </div>
                            <div class="w-full bg-gray-200 dark:bg-slate-700 rounded-full h-1.5">
                                <div class="h-1.5 rounded-full transition-all duration-300"
                                     :class="strengthColor"
                                     :style="'width: ' + (strength / 5 * 100) + '%'"></div>
                            </div>
                        </div>

                        <!-- Password Requirements Checklist -->
                        <div x-show="password.length > 0" x-transition class="mt-3 space-y-1.5">
                            <div class="flex items-center gap-2" :class="hasMinLength ? 'text-green-600 dark:text-green-400' : 'text-gray-400 dark:text-gray-500'">
                                <svg x-show="hasMinLength" class="w-4 h-4 flex-shrink-0" fill="currentColor" viewBox="0 0 20 20">
                                    <path fill-rule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z" clip-rule="evenodd"></path>
                                </svg>
                                <svg x-show="!hasMinLength" class="w-4 h-4 flex-shrink-0" fill="currentColor" viewBox="0 0 20 20">
                                    <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clip-rule="evenodd"></path>
                                </svg>
                                <span class="text-xs">至少 8 個字元</span>
                            </div>
                            <div class="flex items-center gap-2" :class="hasUppercase ? 'text-green-600 dark:text-green-400' : 'text-gray-400 dark:text-gray-500'">
                                <svg x-show="hasUppercase" class="w-4 h-4 flex-shrink-0" fill="currentColor" viewBox="0 0 20 20">
                                    <path fill-rule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z" clip-rule="evenodd"></path>
                                </svg>
                                <svg x-show="!hasUppercase" class="w-4 h-4 flex-shrink-0" fill="currentColor" viewBox="0 0 20 20">
                                    <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clip-rule="evenodd"></path>
                                </svg>
                                <span class="text-xs">包含大寫英文字母 (A-Z)</span>
                            </div>
                            <div class="flex items-center gap-2" :class="hasLowercase ? 'text-green-600 dark:text-green-400' : 'text-gray-400 dark:text-gray-500'">
                                <svg x-show="hasLowercase" class="w-4 h-4 flex-shrink-0" fill="currentColor" viewBox="0 0 20 20">
                                    <path fill-rule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z" clip-rule="evenodd"></path>
                                </svg>
                                <svg x-show="!hasLowercase" class="w-4 h-4 flex-shrink-0" fill="currentColor" viewBox="0 0 20 20">
                                    <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clip-rule="evenodd"></path>
                                </svg>
                                <span class="text-xs">包含小寫英文字母 (a-z)</span>
                            </div>
                            <div class="flex items-center gap-2" :class="hasNumber ? 'text-green-600 dark:text-green-400' : 'text-gray-400 dark:text-gray-500'">
                                <svg x-show="hasNumber" class="w-4 h-4 flex-shrink-0" fill="currentColor" viewBox="0 0 20 20">
                                    <path fill-rule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z" clip-rule="evenodd"></path>
                                </svg>
                                <svg x-show="!hasNumber" class="w-4 h-4 flex-shrink-0" fill="currentColor" viewBox="0 0 20 20">
                                    <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clip-rule="evenodd"></path>
                                </svg>
                                <span class="text-xs">包含數字 (0-9)</span>
                            </div>
                            <div class="flex items-center gap-2" :class="hasSpecial ? 'text-green-600 dark:text-green-400' : 'text-gray-400 dark:text-gray-500'">
                                <svg x-show="hasSpecial" class="w-4 h-4 flex-shrink-0" fill="currentColor" viewBox="0 0 20 20">
                                    <path fill-rule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z" clip-rule="evenodd"></path>
                                </svg>
                                <svg x-show="!hasSpecial" class="w-4 h-4 flex-shrink-0" fill="currentColor" viewBox="0 0 20 20">
                                    <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clip-rule="evenodd"></path>
                                </svg>
                                <span class="text-xs">包含特殊字元 (!@#$%^&* 等)</span>
                            </div>
                        </div>

                        @error('password')
                            <p class="mt-1 text-sm text-red-600 dark:text-red-400">{{ $message }}</p>
                        @enderror
                    </div>

                    <!-- Confirm Password with Toggle -->
                    <div x-data="{ showConfirm: false }">
                        <label for="password_confirmation" class="block text-sm font-semibold text-gray-700 dark:text-gray-300 mb-2">
                            確認密碼
                        </label>
                        <div class="relative">
                            <input
                                :type="showConfirm ? 'text' : 'password'"
                                id="password_confirmation"
                                name="password_confirmation"
                                required
                                class="w-full px-4 py-3 pr-12 rounded-lg border-2 border-gray-200 dark:border-slate-700 bg-gray-50 dark:bg-slate-800 text-gray-900 dark:text-white placeholder-gray-500 dark:placeholder-gray-400 focus:outline-none focus:border-green-500 dark:focus:border-green-500 transition-colors"
                                placeholder="再次輸入密碼"
                            >
                            <button
                                type="button"
                                @click="showConfirm = !showConfirm"
                                class="absolute inset-y-0 right-0 flex items-center pr-3 text-gray-500 dark:text-gray-400 hover:text-gray-700 dark:hover:text-gray-200 transition-colors"
                            >
                                <svg x-show="!showConfirm" class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"></path>
                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z"></path>
                                </svg>
                                <svg x-show="showConfirm" x-cloak class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13.875 18.825A10.05 10.05 0 0112 19c-4.478 0-8.268-2.943-9.543-7a9.97 9.97 0 011.563-3.029m5.858.908a3 3 0 114.243 4.243M9.878 9.878l4.242 4.242M9.88 9.88l-3.29-3.29m7.532 7.532l3.29 3.29M3 3l3.59 3.59m0 0A9.953 9.953 0 0112 5c4.478 0 8.268 2.943 9.543 7a10.025 10.025 0 01-4.132 5.411m0 0L21 21"></path>
                                </svg>
                            </button>
                        </div>
                        @error('password_confirmation')
                            <p class="mt-1 text-sm text-red-600 dark:text-red-400">{{ $message }}</p>
                        @enderror
                    </div>

                    <!-- Register Button -->
                    <button
                        type="submit"
                        class="w-full py-3 px-4 mt-6 bg-gradient-to-r from-green-600 to-teal-600 text-white font-semibold rounded-lg hover:shadow-2xl hover:scale-105 transition-all duration-300 focus:outline-none focus:ring-2 focus:ring-green-500 focus:ring-offset-2 dark:focus:ring-offset-slate-900"
                    >
                        建立帳號
                    </button>
                </form>

                <!-- Divider -->
                <div class="relative my-6">
                    <div class="absolute inset-0 flex items-center">
                        <div class="w-full border-t border-gray-300 dark:border-slate-700"></div>
                    </div>
                    <div class="relative flex justify-center text-sm">
                        <span class="px-2 bg-white dark:bg-slate-900 text-gray-600 dark:text-gray-400">或</span>
                    </div>
                </div>

                <!-- Footer -->
                <p class="text-center text-gray-600 dark:text-gray-400">
                    已有帳號？
                    <a href="{{ route('login') }}" class="font-semibold text-green-600 dark:text-green-400 hover:text-green-700 dark:hover:text-green-300 transition-colors">
                        立即登入
                    </a>
                </p>
            </div>
        </div>
    </div>
@endsection