/* --- 認証ページ全体レイアウト --- */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;

  padding: 2rem 1rem;
}

/* --- カードデザイン --- */
.auth-card {
  width: 100%;
  max-width: 480px;
  padding: 2.5rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.384);
  backdrop-filter: blur(3px);
  border: 1px solid #eef2f6;
}

/* --- ヘッダー --- */
.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}
.auth-title {
  font-size: 1.8rem;
  color: #333;
  margin-bottom: 0.5rem;
  font-weight: bold;
}
.auth-subtitle {
  font-size: 0.9rem;
  color: #888;
}

/* --- フォーム要素 --- */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: bold;
  color: #444;
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 0.8rem 1rem;
  font-size: 1rem;
  border: 2px solid #e1e4e8;
  border-radius: 8px;
  box-sizing: border-box; /* パディングを含める */
  transition: all 0.2s;
  background-color: #fafbfc;
}

.form-input:focus {
  outline: none;
  border-color: #5daaf5; /* primary-color */
  background-color: white;
  box-shadow: 0 0 0 3px rgba(93, 170, 245, 0.1);
}

.form-select {
  width: 100%;
  padding: 0.8rem;
  font-size: 1rem;
  border: 2px solid #e1e4e8;
  border-radius: 8px;
}

.password-hint {
  font-size: 0.8rem;
  color: #888;
  font-weight: normal;
  margin-left: 0.5rem;
}

/* --- ボタン類 --- */
.btn-block {
  display: flex;
  width: 100%;
  justify-content: center;
  box-sizing: border-box;
}

.btn-primary {
  background: #5daaf5;
  color: white;
  border: none;
  font-weight: bold;
  padding: 0.9rem;
  border-radius: 50px;
  cursor: pointer;
  font-size: 1.1rem;
  transition: all 0.2s;
}
.btn-primary:hover {
  background: #4a90e2;
  transform: translateY(-2px);
}

/* Googleボタン（トップページと同じデザイン） */
.btn-google {
  background: #ffffff;
  color: #3c4043;
  border: 1px solid #dadce0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  font-weight: 500;
  transition: all 0.2s ease;
  padding: 0.8rem;
  border-radius: 50px;
  cursor: pointer;
}
.btn-google:hover {
  background-color: #f8faff;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.google-icon {
  width: 20px;
  height: 20px;
}

/* --- 区切り線 --- */
.auth-divider {
  display: flex;
  align-items: center;
  margin: 1.5rem 0;
}
.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  border-top: 1px solid #e1e4e8;
}
.divider-text {
  padding: 0 1rem;
  color: #999;
  font-size: 0.9rem;
}

/* --- フッターリンク --- */
.auth-footer-links {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.9rem;
}
.text-link {
  color: #5daaf5;
  text-decoration: none;
  font-weight: bold;
}
.text-link:hover {
  text-decoration: underline;
}
.text-link-sm {
  font-size: 0.85rem;
  color: #888;
  text-decoration: none;
}
.text-link-sm:hover {
  color: #5daaf5;
}

/* --- アニメーション --- */
.fade-in-up {
  animation: fadeInUp 0.5s ease-out forwards;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- モバイル対応 --- */
@media (max-width: 480px) {
  .auth-card {
    padding: 1.5rem;
    box-shadow: none; /* スマホではフラットに */
    border: none;
    background: rgba(255, 255, 255, 0.384);
    backdrop-filter: blur(3px);
  }
  .auth-container {
    padding: 0;
  }
}