/* =============================================================================
   B-RIO ログイン画面スタイル
   ============================================================================= */

.login-body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: linear-gradient(135deg, #34495e 0%, var(--color-text) 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN",
               "Hiragino Sans", Meiryo, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-main {
  width: 100%;
  padding: 20px;
  box-sizing: border-box;
}

.login-card {
  max-width: 400px;
  margin: 0 auto;
  background: var(--color-bg-card);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.login-card__head {
  text-align: center;
  padding: 32px 24px 16px;
  border-bottom: 1px solid var(--color-bg-soft);
}

.login-card__title {
  margin: 0;
  font-size: 1.4625rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.05em;
}

.login-card__subtitle {
  margin: 8px 0 0;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.login-card__foot {
  text-align: center;
  padding: 16px;
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  border-top: 1px solid var(--color-bg-soft);
}

/* ===== フォーム ===== */
.login-form {
  padding: 24px;
}

.login-form__group {
  margin-bottom: 16px;
}

.login-form__label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.login-form__input {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.8125rem;
  border: 1px solid var(--color-hairline-dark);
  border-radius: 4px;
  background: var(--color-bg-card);
  box-sizing: border-box;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.login-form__input:focus {
  outline: none;
  border-color: var(--color-info);
  box-shadow: 0 0 0 3px rgba(41, 128, 185, 0.2);
}

.login-form__error {
  margin-bottom: 12px;
  padding: 10px 12px;
  background: var(--color-danger-bg);
  color: #922b21;
  border-left: 3px solid var(--color-danger);
  border-radius: 4px;
  font-size: 0.75rem;
}

.login-form__actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}

.login-form__submit {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-bg-card);
  background: var(--color-info);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s, opacity 0.2s;
}

.login-form__submit:hover:not(:disabled) {
  background: #2471a3;
}

.login-form__submit:active:not(:disabled) {
  background: #1f618d;
}

.login-form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.login-form__status {
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  min-height: 1.2em;
}

.login-form__status.is-error {
  color: var(--color-danger);
}

/* ===== レスポンシブ ===== */
@media (max-width: 480px) {
  .login-card {
    border-radius: 6px;
  }
  .login-card__head {
    padding: 24px 16px 12px;
  }
  .login-card__title {
    font-size: 1.2188rem;
  }
  .login-form {
    padding: 20px 16px;
  }
}