<template>
  <div class="login-page" :class="{ 'is-mobile': isMobile }">
    <!-- Левитирующие иконки на фоне -->
    <div class="floating-icons">
      <div class="float-icon icon-1"><i data-lucide="check-square"></i></div>
      <div class="float-icon icon-2"><i data-lucide="clipboard-list"></i></div>
      <div class="float-icon icon-3"><i data-lucide="calendar"></i></div>
      <div class="float-icon icon-4"><i data-lucide="users"></i></div>
      <div class="float-icon icon-5"><i data-lucide="folder"></i></div>
      <div class="float-icon icon-6"><i data-lucide="target"></i></div>
      <div class="float-icon icon-7"><i data-lucide="star"></i></div>
      <div class="float-icon icon-8"><i data-lucide="zap"></i></div>
      <div class="float-icon icon-9"><i data-lucide="flag"></i></div>
      <div class="float-icon icon-10"><i data-lucide="layers"></i></div>
      <div class="float-icon icon-11"><i data-lucide="clock"></i></div>
      <div class="float-icon icon-12"><i data-lucide="message-circle"></i></div>
    </div>

    <!-- Градиентные сферы на фоне -->
    <div class="bg-glow glow-2"></div>
    <div class="bg-glow glow-3"></div>

    <!-- Контент авторизации -->
    <div class="login-content" :class="{ 'is-loading': isProcessing, 'is-success': showSuccess }">
      
      <!-- Состояние успеха -->
      <Transition name="success-fade">
        <div v-if="showSuccess" class="success-state">
          <div class="success-icon">
            <i data-lucide="check"></i>
          </div>
          <h1 class="success-title">{{ isRegisterMode ? 'Регистрация завершена!' : 'Добро пожаловать!' }}</h1>
          <p class="success-text">{{ isRegisterMode ? 'Сейчас вы будете перенаправлены' : 'Авторизация прошла успешно' }}</p>
          <div class="success-loader">
            <span></span><span></span><span></span>
          </div>
        </div>
      </Transition>

      <!-- Форма входа / регистрации -->
      <Transition name="form-fade">
        <div v-if="!showSuccess" class="login-form-wrapper">
          <!-- Логотип -->
          <div class="login-header">
            <div class="logo-icon">
              <i data-lucide="layout-grid"></i>
            </div>
            <h1 class="login-title">TaskBoard</h1>
            <p class="login-subtitle">
              {{ isRegisterMode ? 'Создайте аккаунт для работы с задачами' : 'Войдите в систему управления задачами' }}
            </p>
          </div>

          <!-- Форма входа -->
          <form v-if="!isRegisterMode" @submit.prevent="handleLogin" class="login-form">
            <!-- Поле логина -->
            <div class="input-group" :class="{ 'has-value': login, 'has-focus': loginFocused }">
              <div class="input-icon">
                <i data-lucide="user"></i>
              </div>
              <input 
                type="text" 
                v-model="login"
                @focus="loginFocused = true"
                @blur="loginFocused = false"
                placeholder="Введите логин"
                autocomplete="username"
                :disabled="isProcessing"
              >
              <div class="input-line"></div>
            </div>
            
            <!-- Поле пароля -->
            <div class="input-group" :class="{ 'has-value': password, 'has-focus': passwordFocused }">
              <div class="input-icon">
                <i data-lucide="lock"></i>
              </div>
              <input 
                type="password" 
                v-model="password"
                @focus="passwordFocused = true"
                @blur="passwordFocused = false"
                placeholder="Введите пароль"
                autocomplete="current-password"
                :disabled="isProcessing"
              >
              <div class="input-line"></div>
            </div>
            
            <!-- Ошибка -->
            <Transition name="error-shake">
              <div v-if="error" class="error-message">
                <i data-lucide="alert-circle"></i>
                <span>{{ error }}</span>
              </div>
            </Transition>
            
            <!-- Кнопка входа -->
            <button 
              type="submit" 
              class="login-btn" 
              :class="{ 'is-loading': isProcessing }"
              :disabled="isProcessing || !login || !password"
            >
              <span class="btn-text">Войти</span>
              <span class="btn-loader">
                <span></span><span></span><span></span>
              </span>
              <i data-lucide="arrow-right" class="btn-arrow"></i>
            </button>

            <!-- Ссылка на регистрацию -->
            <div class="form-switch">
              <span>Нет аккаунта?</span>
              <button type="button" class="switch-btn" @click="switchToRegister">Зарегистрироваться</button>
            </div>
          </form>

          <!-- Форма регистрации -->
          <form v-else @submit.prevent="handleRegister" class="login-form">
            <!-- Логин -->
            <div class="input-group" :class="{ 'has-value': regUsername, 'has-focus': regUsernameFocused, 'has-error': errors.username, 'shake': shakeUsername }">
              <div class="input-icon">
                <i data-lucide="at-sign"></i>
              </div>
              <input 
                type="text" 
                v-model="regUsername"
                @focus="regUsernameFocused = true"
                @blur="regUsernameFocused = false"
                @input="filterUsername"
                placeholder="Придумайте логин"
                autocomplete="username"
                maxlength="32"
                :disabled="isProcessing"
              >
              <div class="input-line"></div>
            </div>
            
            <!-- Имя -->
            <div class="input-group" :class="{ 'has-value': regName, 'has-focus': regNameFocused, 'has-error': errors.name, 'shake': shakeName }">
              <div class="input-icon">
                <i data-lucide="user"></i>
              </div>
              <input 
                type="text" 
                v-model="regName"
                @focus="regNameFocused = true"
                @blur="regNameFocused = false"
                @input="filterName"
                placeholder="Ваше имя"
                autocomplete="name"
                maxlength="50"
                :disabled="isProcessing"
              >
              <div class="input-line"></div>
            </div>
            
            <!-- Пароль -->
            <div class="input-group" :class="{ 'has-value': regPassword, 'has-focus': regPasswordFocused, 'has-error': errors.password }">
              <div class="input-icon">
                <i data-lucide="lock"></i>
              </div>
              <input 
                type="password" 
                v-model="regPassword"
                @focus="regPasswordFocused = true"
                @blur="regPasswordFocused = false"
                @input="clearPasswordError"
                placeholder="Придумайте пароль"
                autocomplete="new-password"
                :disabled="isProcessing"
              >
              <div class="input-line"></div>
            </div>
            
            <!-- Telegram (опционально) -->
            <div class="input-group" :class="{ 'has-value': regTelegram.length > 0, 'has-focus': regTelegramFocused, 'shake': shakeTelegram }">
              <div class="input-icon">
                <i data-lucide="send"></i>
              </div>
              <input 
                type="text" 
                v-model="regTelegram"
                @focus="regTelegramFocused = true"
                @blur="regTelegramFocused = false"
                @input="filterTelegram"
                @keydown="preventDeleteAt"
                placeholder="@telegram (необязательно)"
                autocomplete="off"
                :disabled="isProcessing"
              >
              <div class="input-line"></div>
            </div>
            
            <!-- Ошибка -->
            <Transition name="error-shake">
              <div v-if="error" class="error-message">
                <i data-lucide="alert-circle"></i>
                <span>{{ error }}</span>
              </div>
            </Transition>
            
            <!-- Кнопка регистрации -->
            <button 
              type="submit" 
              class="login-btn" 
              :class="{ 'is-loading': isProcessing }"
              :disabled="isProcessing || !regName || !regUsername || !regPassword"
            >
              <span class="btn-text">Зарегистрироваться</span>
              <span class="btn-loader">
                <span></span><span></span><span></span>
              </span>
              <i data-lucide="arrow-right" class="btn-arrow"></i>
            </button>

            <!-- Ссылка на вход -->
            <div class="form-switch">
              <span>Уже есть аккаунт?</span>
              <button type="button" class="switch-btn" @click="switchToLogin">Войти</button>
            </div>
          </form>
        </div>
      </Transition>
    </div>
  </div>
</template>

<script setup>
import { ref, reactive, onMounted, nextTick, watch } from 'vue'
import { useRouter } from 'vue-router'
import { authApi, cardsApi } from '../api'
import { useProjectsStore } from '../stores/projects'
import { useMobile } from '../composables/useMobile'
import { setAuthCache } from '../router'

const { isMobile } = useMobile()

const router = useRouter()
const store = useProjectsStore()

// Режим: вход или регистрация
const isRegisterMode = ref(false)

// Вход
const login = ref('')
const password = ref('')
const loginFocused = ref(false)
const passwordFocused = ref(false)

// Регистрация
const regName = ref('')
const regUsername = ref('')
const regPassword = ref('')
const regTelegram = ref('')
const regNameFocused = ref(false)
const regUsernameFocused = ref(false)
const regPasswordFocused = ref(false)
const regTelegramFocused = ref(false)

// Общие
const error = ref('')
const errors = reactive({})
const isProcessing = ref(false)
const showSuccess = ref(false)

// Состояния тряски полей
const shakeUsername = ref(false)
const shakeName = ref(false)
const shakeTelegram = ref(false)

// Функция тряски поля
const triggerShake = (shakeRef) => {
  shakeRef.value = true
  setTimeout(() => { shakeRef.value = false }, 400)
}

// Сброс ошибки пароля при вводе
const clearPasswordError = () => {
  if (errors.password) delete errors.password
}

// Фильтрация логина — начинается с буквы, далее a-zA-Z, 0-9, _
const filterUsername = () => {
  // Сбрасываем ошибку при вводе
  if (errors.username) delete errors.username
  
  const before = regUsername.value
  let value = before.replace(/[^a-zA-Z0-9_]/g, '')
  // Первый символ должен быть буквой — убираем цифры/_ из начала
  value = value.replace(/^[0-9_]+/, '')
  regUsername.value = value
  // Если что-то отфильтровалось — тряска
  if (before !== value && before.length >= value.length) {
    triggerShake(shakeUsername)
  }
}

// Фильтрация имени — только буквы, пробелы, дефис
const filterName = () => {
  // Сбрасываем ошибку при вводе
  if (errors.name) delete errors.name
  
  const before = regName.value
  let value = before.replace(/[^a-zA-Zа-яА-ЯёЁ\s\-]/g, '')
  value = value.replace(/\s+/g, ' ')
  regName.value = value
  // Если что-то отфильтровалось — тряска
  if (before !== value && before.length > value.length) {
    triggerShake(shakeName)
  }
}

// Фильтрация telegram — только a-z, 0-9, _ и начинается с @
const filterTelegram = () => {
  const before = regTelegram.value
  let value = before
  value = value.replace(/@/g, '')
  value = value.replace(/[^a-zA-Z0-9_]/g, '').toLowerCase()
  const after = value ? '@' + value : ''
  regTelegram.value = after
  // Если что-то отфильтровалось (кроме добавления @) — тряска
  const beforeClean = before.replace(/@/g, '').toLowerCase()
  if (beforeClean !== value && beforeClean.length > value.length) {
    triggerShake(shakeTelegram)
  }
}

// Не даём удалить @ — очищаем поле полностью
const preventDeleteAt = (e) => {
  if ((e.key === 'Backspace' || e.key === 'Delete') && regTelegram.value === '@') {
    e.preventDefault()
    regTelegram.value = ''
  }
}

// Переключение режимов
const switchToRegister = () => {
  error.value = ''
  Object.keys(errors).forEach(k => delete errors[k])
  isRegisterMode.value = true
  nextTick(refreshIcons)
}

const switchToLogin = () => {
  error.value = ''
  Object.keys(errors).forEach(k => delete errors[k])
  isRegisterMode.value = false
  regTelegram.value = ''
  nextTick(refreshIcons)
}

// Предзагрузка данных пока показывается анимация успеха
const prefetchData = async () => {
  try {
    await store.init()
    if (store.currentProjectId) {
      const result = await cardsApi.getAll(store.currentProjectId)
      if (result.success) {
        sessionStorage.setItem('prefetchedCards', JSON.stringify(result.data))
      }
    }
  } catch (e) {
    console.error('Prefetch error:', e)
  }
}

// Вход
const handleLogin = async () => {
  error.value = ''
  isProcessing.value = true
  
  try {
    const data = await authApi.login(login.value, password.value)
    
    if (data.success) {
      // Получаем данные пользователя для кэша
      const checkResult = await authApi.check()
      setAuthCache(true, checkResult.user || null)
      showSuccess.value = true
      await nextTick()
      refreshIcons()
      
      const prefetchPromise = prefetchData()
      const animationPromise = new Promise(resolve => setTimeout(resolve, 1800))
      await Promise.all([prefetchPromise, animationPromise])
      
      router.push('/')
    } else {
      isProcessing.value = false
      error.value = data.errors?.username || data.errors?.password || 'Неверный логин или пароль'
      await nextTick()
      refreshIcons()
    }
  } catch (e) {
    isProcessing.value = false
    error.value = 'Ошибка подключения к серверу'
    await nextTick()
    refreshIcons()
  }
}

// Регистрация
const handleRegister = async () => {
  error.value = ''
  Object.keys(errors).forEach(k => delete errors[k])
  isProcessing.value = true
  
  try {
    // Убираем @ из telegram при отправке, если только @ — отправляем null
    const telegramValue = regTelegram.value.replace('@', '').trim()
    
    const data = await authApi.register({
      name: regName.value.trim(),
      username: regUsername.value.trim(),
      password: regPassword.value,
      telegram: telegramValue || null
    })
    
    if (data.success) {
      // Автоматически входим после регистрации
      const loginResult = await authApi.login(regUsername.value.trim(), regPassword.value)
      
      if (loginResult.success) {
        // Получаем данные пользователя для кэша
        const checkResult = await authApi.check()
        setAuthCache(true, checkResult.user || null)
        showSuccess.value = true
        await nextTick()
        refreshIcons()
        
        const prefetchPromise = prefetchData()
        const animationPromise = new Promise(resolve => setTimeout(resolve, 1800))
        await Promise.all([prefetchPromise, animationPromise])
        
        router.push('/')
      } else {
        // Если автовход не удался — переключаем на форму входа
        isProcessing.value = false
        switchToLogin()
        error.value = 'Аккаунт создан. Войдите с вашими данными.'
      }
    } else {
      isProcessing.value = false
      // Показываем ошибки с бэка
      if (data.errors) {
        Object.assign(errors, data.errors)
        // Берём первую ошибку для отображения
        const firstError = Object.values(data.errors)[0]
        error.value = firstError || 'Ошибка регистрации'
      } else {
        error.value = 'Ошибка регистрации'
      }
      await nextTick()
      refreshIcons()
    }
  } catch (e) {
    isProcessing.value = false
    error.value = 'Ошибка подключения к серверу'
    await nextTick()
    refreshIcons()
  }
}

const refreshIcons = () => {
  if (window.lucide) {
    window.lucide.createIcons()
  }
}

onMounted(refreshIcons)

watch([showSuccess, isRegisterMode], () => {
  nextTick(refreshIcons)
})
</script>

<style scoped>
.login-page {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0a0a0c 0%, #111113 50%, #0d1117 100%);
  position: relative;
  overflow: hidden;
  padding: 20px;
}

/* Градиентные сферы на фоне */
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
  pointer-events: none;
}

.glow-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.25) 0%, transparent 70%);
  bottom: -150px;
  left: -100px;
  animation: glowFloat2 10s ease-in-out infinite;
}

.glow-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(244, 114, 182, 0.2) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: glowFloat3 12s ease-in-out infinite;
}

@keyframes glowFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -20px) scale(1.05); }
}

@keyframes glowFloat3 {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.3; }
  50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.5; }
}

/* Левитирующие иконки */
.floating-icons {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.float-icon {
  position: absolute;
  color: rgba(255, 255, 255, 0.04);
  transition: color 0.3s;
}

.float-icon i,
.float-icon svg {
  width: 100%;
  height: 100%;
}

.icon-1 { width: 48px; height: 48px; top: 8%; left: 12%; animation: float1 6s ease-in-out infinite; }
.icon-2 { width: 36px; height: 36px; top: 15%; right: 18%; animation: float2 7s ease-in-out infinite; }
.icon-3 { width: 42px; height: 42px; top: 25%; left: 8%; animation: float3 8s ease-in-out infinite; }
.icon-4 { width: 32px; height: 32px; top: 35%; right: 10%; animation: float1 5s ease-in-out infinite; }
.icon-5 { width: 40px; height: 40px; top: 55%; left: 15%; animation: float2 9s ease-in-out infinite; }
.icon-6 { width: 44px; height: 44px; top: 65%; right: 20%; animation: float3 6s ease-in-out infinite; }
.icon-7 { width: 28px; height: 28px; top: 75%; left: 10%; animation: float1 7s ease-in-out infinite; }
.icon-8 { width: 38px; height: 38px; top: 85%; right: 15%; animation: float2 8s ease-in-out infinite; }
.icon-9 { width: 34px; height: 34px; bottom: 20%; left: 25%; animation: float3 5s ease-in-out infinite; }
.icon-10 { width: 46px; height: 46px; top: 45%; left: 5%; animation: float1 10s ease-in-out infinite; }
.icon-11 { width: 30px; height: 30px; top: 20%; left: 25%; animation: float2 6s ease-in-out infinite; }
.icon-12 { width: 36px; height: 36px; bottom: 30%; right: 8%; animation: float3 7s ease-in-out infinite; }

@keyframes float1 {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-15px) rotate(5deg); }
  75% { transform: translateY(10px) rotate(-3deg); }
}

@keyframes float2 {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-20px) rotate(-5deg); }
  66% { transform: translateY(15px) rotate(3deg); }
}

@keyframes float3 {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-12px) translateX(8px); }
}

/* Контент */
.login-content {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-form-wrapper {
  display: flex;
  flex-direction: column;
  gap: 40px;
  width: 100%;
}

/* Заголовок */
.login-header {
  text-align: center;
}

.logo-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--accent) 0%, #00e6b8 100%);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 60px rgba(0, 212, 170, 0.3);
  animation: logoFloat 4s ease-in-out infinite;
}

.logo-icon i,
.logo-icon svg {
  width: 36px;
  height: 36px;
  color: #000;
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.login-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.login-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  font-weight: 400;
}

/* Форма */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Группа инпута */
.input-group {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 4px;
}

.input-icon {
  width: 24px;
  height: 24px;
  color: var(--text-muted);
  transition: color 0.3s, transform 0.3s;
  flex-shrink: 0;
}

.input-icon i,
.input-icon svg {
  width: 24px;
  height: 24px;
}

.input-group.has-focus .input-icon,
.input-group.has-value .input-icon {
  color: var(--accent);
  transform: scale(1.1);
}

.input-group.has-error .input-icon {
  color: #f87171;
}

.input-group input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 16px 0;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 16px;
  font-weight: 400;
  outline: none;
}

.input-group input::placeholder {
  color: var(--text-muted);
  transition: opacity 0.3s;
}

.input-group.has-focus input::placeholder {
  opacity: 0.5;
}

.input-group input:disabled {
  opacity: 0.5;
}

/* Линия под инпутом */
.input-line {
  position: absolute;
  bottom: 0;
  left: 44px;
  right: 0;
  height: 2px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 1px;
  overflow: hidden;
}

.input-line::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--accent), #00e6b8);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.input-group.has-focus .input-line::after,
.input-group.has-value .input-line::after {
  transform: scaleX(1);
}

.input-group.has-error .input-line::after {
  background: #f87171;
  transform: scaleX(1);
}

/* Анимация тряски при неверном вводе */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(3px); }
}

.input-group.shake {
  animation: shake 0.4s ease-out;
}

.input-group.shake .input-line::after {
  background: #f87171 !important;
  transform: scaleX(1) !important;
}

/* Ошибка */
.error-message {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: rgba(248, 113, 113, 0.08);
  border: 1px solid rgba(248, 113, 113, 0.2);
  border-radius: 12px;
  color: #f87171;
  font-size: 14px;
}

.error-message i,
.error-message svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Кнопка входа */
.login-btn {
  position: relative;
  width: 100%;
  padding: 18px 24px;
  background: linear-gradient(135deg, var(--accent) 0%, #00e6b8 100%);
  border: none;
  border-radius: 14px;
  color: #000;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  overflow: hidden;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 8px;
  box-shadow: 0 10px 40px rgba(0, 212, 170, 0.3);
}

.login-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 15px 50px rgba(0, 212, 170, 0.4);
}

.login-btn:active:not(:disabled) {
  transform: translateY(0);
}

.login-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-text {
  transition: opacity 0.3s, transform 0.3s;
}

.btn-arrow {
  width: 20px;
  height: 20px;
  transition: opacity 0.3s, transform 0.3s;
}

.btn-loader {
  position: absolute;
  display: flex;
  gap: 6px;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.3s, transform 0.3s;
}

.btn-loader span {
  width: 8px;
  height: 8px;
  background: #000;
  border-radius: 50%;
  animation: btnLoaderBounce 1.2s ease-in-out infinite;
}

.btn-loader span:nth-child(2) { animation-delay: 0.1s; }
.btn-loader span:nth-child(3) { animation-delay: 0.2s; }

@keyframes btnLoaderBounce {
  0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
  40% { transform: scale(1.2); opacity: 1; }
}

.login-btn.is-loading .btn-text,
.login-btn.is-loading .btn-arrow {
  opacity: 0;
  transform: scale(0.8);
}

.login-btn.is-loading .btn-loader {
  opacity: 1;
  transform: scale(1);
}

/* Переключение между входом и регистрацией */
.form-switch {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.switch-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.2s;
}

.switch-btn:hover {
  opacity: 0.8;
}

/* Состояние успеха */
.success-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  animation: successAppear 0.6s ease;
}

@keyframes successAppear {
  0% { opacity: 0; transform: scale(0.9); }
  100% { opacity: 1; transform: scale(1); }
}

.success-icon {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--accent) 0%, #00e6b8 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  box-shadow: 0 25px 80px rgba(0, 212, 170, 0.4);
  animation: successPulse 1.5s ease-in-out infinite;
}

.success-icon i,
.success-icon svg {
  width: 48px;
  height: 48px;
  color: #000;
  animation: successCheck 0.5s ease 0.2s both;
}

@keyframes successPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 25px 80px rgba(0, 212, 170, 0.4); }
  50% { transform: scale(1.05); box-shadow: 0 30px 100px rgba(0, 212, 170, 0.5); }
}

@keyframes successCheck {
  0% { transform: scale(0) rotate(-45deg); opacity: 0; }
  50% { transform: scale(1.2) rotate(10deg); }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}

.success-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.success-text {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.success-loader {
  display: flex;
  gap: 8px;
}

.success-loader span {
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  animation: successLoaderBounce 1.4s ease-in-out infinite;
}

.success-loader span:nth-child(2) { animation-delay: 0.16s; }
.success-loader span:nth-child(3) { animation-delay: 0.32s; }

@keyframes successLoaderBounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* Transitions */
.form-fade-enter-active,
.form-fade-leave-active {
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.form-fade-enter-from {
  opacity: 0;
  transform: scale(0.95);
}

.form-fade-leave-to {
  opacity: 0;
  transform: scale(0.95);
  position: absolute;
  width: 100%;
}

.success-fade-enter-active {
  transition: opacity 0.5s ease 0.2s, transform 0.5s ease 0.2s;
}

.success-fade-enter-from {
  opacity: 0;
  transform: scale(0.9);
}

.error-shake-enter-active {
  animation: errorShake 0.5s ease;
}

.error-shake-leave-active {
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.error-shake-leave-to {
  opacity: 0;
  transform: translateY(-10px);
}

@keyframes errorShake {
  0% { opacity: 0; transform: translateX(0) translateY(-10px); }
  20% { opacity: 1; transform: translateX(-8px) translateY(0); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
  100% { transform: translateX(0); }
}

/* Мобильная адаптация (MOBILE_BREAKPOINT из config.js) */
.login-page.is-mobile .login-title {
  font-size: 26px;
}

.login-page.is-mobile .login-subtitle {
  font-size: 14px;
}

.login-page.is-mobile .logo-icon {
  width: 64px;
  height: 64px;
}

.login-page.is-mobile .logo-icon i,
.login-page.is-mobile .logo-icon svg {
  width: 32px;
  height: 32px;
}

.login-page.is-mobile .float-icon {
  opacity: 0.5;
}
</style>
