/* =========================================
   MEGA ログイン画面 - 青色統一モダンUIデザイン
   ネームスペース: .mega-login
========================================= */

/* グローバル変数定義 */
.mega-login {
  --login-primary: linear-gradient(135deg, #4299e1 0%, #3182ce 50%, #2c5aa0 100%);
  --login-secondary: linear-gradient(135deg, #63b3ed 0%, #4299e1 100%);
  --login-accent: linear-gradient(135deg, #2b6cb0 0%, #2c5aa0 100%);
  --login-surface: rgba(255, 255, 255, 0.95);
  --login-surface-glass: rgba(255, 255, 255, 0.1);
  --login-text-primary: #2d3748;
  --login-text-secondary: #4a5568;
  --login-border: rgba(255, 255, 255, 0.2);
  --login-shadow: 0 20px 40px rgba(45, 95, 160, 0.15);
  --login-shadow-hover: 0 25px 50px rgba(45, 95, 160, 0.2);
  --login-animation-speed: 0.4s;
}

/* 背景とコンテナ */
.mega-login .login-container {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 8vh;
  min-height: 100vh;
  padding-left: 2rem;
  padding-right: 2rem;
  background: #ffffff;
  overflow: hidden;
}

/* 浮遊する装飾要素 */
.mega-login .login-container::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(66, 153, 225, 0.05) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: floatPattern 20s linear infinite;
  pointer-events: none;
}

@keyframes floatPattern {
  0% { transform: translateX(0) translateY(0); }
  100% { transform: translateX(-50px) translateY(-50px); }
}

/* メインカード */
.mega-login .login-card {
  position: relative;
  background: var(--login-surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--login-border);
  width: 100%;
  max-width: 450px;
  padding: 3.5rem 3rem;
  border-radius: 24px;
  box-shadow: var(--login-shadow);
  transition: all var(--login-animation-speed) cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  z-index: 10;
}

.mega-login .login-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--login-primary);
  border-radius: 24px 24px 0 0;
}

.mega-login .login-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--login-shadow-hover);
}

/* ロゴセクション */
.mega-login .login-logo-section {
  text-align: center;
  margin-bottom: 2.5rem;
  position: relative;
}

.mega-login .login-heading {
  font-size: 3.5rem;
  font-weight: 900;
  background: var(--login-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 0.5rem 0;
  letter-spacing: -1px;
  line-height: 1.1;
  animation: logoGlow 3s ease-in-out infinite alternate;
  position: relative;
}

@keyframes logoGlow {
  0% { filter: drop-shadow(0 0 5px rgba(66, 153, 225, 0.3)); }
  100% { filter: drop-shadow(0 0 15px rgba(66, 153, 225, 0.6)); }
}

.mega-login .login-subheading {
  font-size: 1.1rem;
  color: var(--login-text-secondary);
  font-weight: 500;
  margin: 0 0 2rem 0;
  position: relative;
}

/* 区切り線をモダンに */
.mega-login .login-divider {
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--login-primary) 50%, transparent 100%);
  margin: 2rem auto;
  width: 60%;
  border-radius: 2px;
  position: relative;
  animation: dividerPulse 2s ease-in-out infinite;
}

@keyframes dividerPulse {
  0%, 100% { opacity: 0.6; transform: scaleX(1); }
  50% { opacity: 1; transform: scaleX(1.1); }
}

/* 説明テキスト */
.mega-login .login-description {
  font-size: 1.125rem;
  color: var(--login-text-primary);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  text-align: center;
  font-weight: 400;
}

/* ボタンセクション */
.mega-login .login-button-wrapper {
  margin: 2.5rem 0;
  position: relative;
}

.mega-login .login-button {
  display: block;
  width: 100%;
  padding: 1.25rem 2rem;
  background: var(--login-primary);
  color: white;
  text-decoration: none;
  font-size: 1.125rem;
  font-weight: 600;
  border: none;
  border-radius: 16px;
  cursor: pointer;
  transition: all var(--login-animation-speed) cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 25px rgba(66, 153, 225, 0.3);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.mega-login .login-button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.mega-login .login-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px rgba(66, 153, 225, 0.4);
  color: white;
  text-decoration: none;
}

.mega-login .login-button:hover::before {
  left: 100%;
}

.mega-login .login-button:active {
  transform: translateY(0);
}

/* フッター */
.mega-login .login-footer {
  margin-top: 3rem;
  text-align: center;
}

.mega-login .login-copyright {
  font-size: 0.875rem;
  color: var(--login-text-secondary);
  margin: 0;
  opacity: 0.8;
}

/* マイクロアニメーション */
.mega-login .login-card {
  animation: cardFadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes cardFadeIn {
  0% {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* インタラクティブ要素 */
.mega-login .login-card > * {
  animation: elementSlideUp 0.6s ease-out forwards;
  opacity: 0;
  transform: translateY(20px);
}

.mega-login .login-logo-section { animation-delay: 0.1s; }
.mega-login .login-divider { animation-delay: 0.2s; }
.mega-login .login-description { animation-delay: 0.3s; }
.mega-login .login-button-wrapper { animation-delay: 0.4s; }
.mega-login .login-footer { animation-delay: 0.5s; }

@keyframes elementSlideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* レスポンシブデザイン */
@media (max-width: 640px) {
  .mega-login .login-container {
    padding: 1rem;
    padding-top: 6vh;
    min-height: 100vh;
  }
  
  .mega-login .login-card {
    padding: 2.5rem 2rem;
    max-width: 100%;
    border-radius: 20px;
  }
  
  .mega-login .login-heading {
    font-size: 2.8rem;
  }
  
  .mega-login .login-subheading {
    font-size: 1rem;
  }
  
  .mega-login .login-button {
    padding: 1rem 1.5rem;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .mega-login .login-container {
    padding-top: 4vh;
  }
  
  .mega-login .login-card {
    padding: 2rem 1.5rem;
    border-radius: 16px;
  }
  
  .mega-login .login-heading {
    font-size: 2.4rem;
  }
  
  .mega-login .login-description {
    font-size: 1rem;
  }
}

/* タッチデバイス用の改善 */
@media (hover: none) and (pointer: coarse) {
  .mega-login .login-button:hover {
    transform: none;
    box-shadow: 0 8px 25px rgba(66, 153, 225, 0.3);
  }
  
  .mega-login .login-card:hover {
    transform: none;
    box-shadow: var(--login-shadow);
  }
}

/* アクセシビリティ改善 */
@media (prefers-reduced-motion: reduce) {
  .mega-login * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .mega-login .login-container::before {
    animation: none;
  }
}

/* フォーカス状態の改善 */
.mega-login .login-button:focus {
  outline: 3px solid rgba(66, 153, 225, 0.5);
  outline-offset: 2px;
}

/* ロード状態のスタイル（オプション） */
.mega-login .login-button.loading {
  pointer-events: none;
  opacity: 0.8;
}

.mega-login .login-button.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid transparent;
  border-top: 2px solid white;
  border-radius: 50%;
  animation: buttonSpin 1s linear infinite;
}

@keyframes buttonSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ログインページでサイドバーを完全に非表示 */
.login-page-layout .sidebar,
.login-page-layout .sidebar-toggle {
  display: none !important;
}

/* ログインページ専用のコンテンツ調整 */
.login-page-layout {
  margin-left: 0 !important;
  width: 100% !important;
  margin-top: var(--header-height) !important;
  background-color: #ffffff !important;
}

/* ログインページの親要素も白背景に統一 */
.mega-login {
  background-color: #ffffff !important;
  min-height: calc(100vh - var(--header-height));
}

/* main-layoutもログインページでは白背景 */
body:has(.mega-login) .main-layout,
body:has(.mega-login) {
  background-color: #ffffff !important;
}